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8264 lines
285 KiB
8264 lines
285 KiB
/* |
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* MOV demuxer |
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* Copyright (c) 2001 Fabrice Bellard |
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* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> |
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* |
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* first version by Francois Revol <revol@free.fr> |
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* seek function by Gael Chardon <gael.dev@4now.net> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#include <inttypes.h> |
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#include <limits.h> |
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#include <stdint.h> |
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|
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#include "libavutil/attributes.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/intfloat.h" |
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#include "libavutil/mathematics.h" |
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#include "libavutil/time_internal.h" |
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#include "libavutil/avassert.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/dict.h" |
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#include "libavutil/display.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/aes.h" |
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#include "libavutil/aes_ctr.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/sha.h" |
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#include "libavutil/spherical.h" |
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#include "libavutil/stereo3d.h" |
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#include "libavutil/timecode.h" |
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#include "libavutil/dovi_meta.h" |
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#include "libavcodec/ac3tab.h" |
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#include "libavcodec/flac.h" |
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#include "libavcodec/mpegaudiodecheader.h" |
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#include "libavcodec/mlp_parse.h" |
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#include "avformat.h" |
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#include "internal.h" |
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#include "avio_internal.h" |
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#include "riff.h" |
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#include "isom.h" |
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#include "libavcodec/get_bits.h" |
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#include "id3v1.h" |
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#include "mov_chan.h" |
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#include "replaygain.h" |
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|
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#if CONFIG_ZLIB |
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#include <zlib.h> |
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#endif |
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|
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#include "qtpalette.h" |
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|
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/* those functions parse an atom */ |
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/* links atom IDs to parse functions */ |
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typedef struct MOVParseTableEntry { |
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uint32_t type; |
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int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom); |
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} MOVParseTableEntry; |
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|
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static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom); |
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static int mov_read_mfra(MOVContext *c, AVIOContext *f); |
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static int64_t add_ctts_entry(MOVStts** ctts_data, unsigned int* ctts_count, unsigned int* allocated_size, |
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int count, int duration); |
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|
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static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, |
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unsigned len, const char *key) |
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{ |
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char buf[16]; |
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|
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short current, total = 0; |
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avio_rb16(pb); // unknown |
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current = avio_rb16(pb); |
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if (len >= 6) |
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total = avio_rb16(pb); |
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if (!total) |
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snprintf(buf, sizeof(buf), "%d", current); |
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else |
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snprintf(buf, sizeof(buf), "%d/%d", current, total); |
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c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
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av_dict_set(&c->fc->metadata, key, buf, 0); |
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|
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return 0; |
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} |
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|
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static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb, |
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unsigned len, const char *key) |
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{ |
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/* bypass padding bytes */ |
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avio_r8(pb); |
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avio_r8(pb); |
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avio_r8(pb); |
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|
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c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
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av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0); |
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|
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return 0; |
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} |
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|
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static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb, |
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unsigned len, const char *key) |
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{ |
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c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
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av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0); |
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|
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return 0; |
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} |
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|
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static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb, |
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unsigned len, const char *key) |
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{ |
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short genre; |
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|
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avio_r8(pb); // unknown |
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|
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genre = avio_r8(pb); |
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if (genre < 1 || genre > ID3v1_GENRE_MAX) |
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return 0; |
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c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
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av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0); |
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|
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return 0; |
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} |
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|
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static const uint32_t mac_to_unicode[128] = { |
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0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1, |
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0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8, |
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0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3, |
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0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC, |
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0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF, |
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0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8, |
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0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211, |
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0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8, |
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0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB, |
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0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153, |
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0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA, |
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0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02, |
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0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1, |
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0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4, |
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0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC, |
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0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7, |
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}; |
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|
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static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len, |
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char *dst, int dstlen) |
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{ |
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char *p = dst; |
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char *end = dst+dstlen-1; |
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int i; |
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|
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for (i = 0; i < len; i++) { |
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uint8_t t, c = avio_r8(pb); |
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|
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if (p >= end) |
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continue; |
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|
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if (c < 0x80) |
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*p++ = c; |
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else if (p < end) |
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PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;); |
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} |
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*p = 0; |
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return p - dst; |
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} |
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|
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static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len) |
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{ |
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AVStream *st; |
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MOVStreamContext *sc; |
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enum AVCodecID id; |
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int ret; |
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|
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switch (type) { |
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case 0xd: id = AV_CODEC_ID_MJPEG; break; |
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case 0xe: id = AV_CODEC_ID_PNG; break; |
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case 0x1b: id = AV_CODEC_ID_BMP; break; |
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default: |
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av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type); |
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avio_skip(pb, len); |
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return 0; |
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} |
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|
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st = avformat_new_stream(c->fc, NULL); |
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if (!st) |
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return AVERROR(ENOMEM); |
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sc = av_mallocz(sizeof(*sc)); |
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if (!sc) |
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return AVERROR(ENOMEM); |
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st->priv_data = sc; |
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|
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ret = av_get_packet(pb, &st->attached_pic, len); |
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if (ret < 0) |
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return ret; |
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|
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if (st->attached_pic.size >= 8 && id != AV_CODEC_ID_BMP) { |
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if (AV_RB64(st->attached_pic.data) == 0x89504e470d0a1a0a) { |
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id = AV_CODEC_ID_PNG; |
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} else { |
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id = AV_CODEC_ID_MJPEG; |
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} |
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} |
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|
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st->disposition |= AV_DISPOSITION_ATTACHED_PIC; |
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|
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st->attached_pic.stream_index = st->index; |
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st->attached_pic.flags |= AV_PKT_FLAG_KEY; |
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|
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st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; |
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st->codecpar->codec_id = id; |
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|
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return 0; |
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} |
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|
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// 3GPP TS 26.244 |
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static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len) |
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{ |
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char language[4] = { 0 }; |
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char buf[200], place[100]; |
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uint16_t langcode = 0; |
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double longitude, latitude, altitude; |
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const char *key = "location"; |
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|
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if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) { |
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av_log(c->fc, AV_LOG_ERROR, "loci too short\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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avio_skip(pb, 4); // version+flags |
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langcode = avio_rb16(pb); |
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ff_mov_lang_to_iso639(langcode, language); |
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len -= 6; |
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|
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len -= avio_get_str(pb, len, place, sizeof(place)); |
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if (len < 1) { |
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av_log(c->fc, AV_LOG_ERROR, "place name too long\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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avio_skip(pb, 1); // role |
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len -= 1; |
|
|
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if (len < 12) { |
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av_log(c->fc, AV_LOG_ERROR, |
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"loci too short (%u bytes left, need at least %d)\n", len, 12); |
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return AVERROR_INVALIDDATA; |
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} |
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longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); |
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latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); |
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altitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); |
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|
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// Try to output in the same format as the ?xyz field |
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snprintf(buf, sizeof(buf), "%+08.4f%+09.4f", latitude, longitude); |
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if (altitude) |
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av_strlcatf(buf, sizeof(buf), "%+f", altitude); |
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av_strlcatf(buf, sizeof(buf), "/%s", place); |
|
|
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if (*language && strcmp(language, "und")) { |
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char key2[16]; |
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snprintf(key2, sizeof(key2), "%s-%s", key, language); |
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av_dict_set(&c->fc->metadata, key2, buf, 0); |
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} |
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c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
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return av_dict_set(&c->fc->metadata, key, buf, 0); |
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} |
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|
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static int mov_metadata_hmmt(MOVContext *c, AVIOContext *pb, unsigned len) |
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{ |
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int i, n_hmmt; |
|
|
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if (len < 2) |
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return 0; |
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if (c->ignore_chapters) |
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return 0; |
|
|
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n_hmmt = avio_rb32(pb); |
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for (i = 0; i < n_hmmt && !pb->eof_reached; i++) { |
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int moment_time = avio_rb32(pb); |
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avpriv_new_chapter(c->fc, i, av_make_q(1, 1000), moment_time, AV_NOPTS_VALUE, NULL); |
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} |
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return 0; |
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} |
|
|
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static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
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{ |
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char tmp_key[AV_FOURCC_MAX_STRING_SIZE] = {0}; |
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char key2[32], language[4] = {0}; |
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char *str = NULL; |
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const char *key = NULL; |
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uint16_t langcode = 0; |
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uint32_t data_type = 0, str_size, str_size_alloc; |
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int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL; |
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int raw = 0; |
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int num = 0; |
|
|
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switch (atom.type) { |
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case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break; |
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case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break; |
|
case MKTAG( 'X','M','P','_'): |
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if (c->export_xmp) { key = "xmp"; raw = 1; } break; |
|
case MKTAG( 'a','A','R','T'): key = "album_artist"; break; |
|
case MKTAG( 'a','k','I','D'): key = "account_type"; |
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parse = mov_metadata_int8_no_padding; break; |
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case MKTAG( 'a','p','I','D'): key = "account_id"; break; |
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case MKTAG( 'c','a','t','g'): key = "category"; break; |
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case MKTAG( 'c','p','i','l'): key = "compilation"; |
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parse = mov_metadata_int8_no_padding; break; |
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case MKTAG( 'c','p','r','t'): key = "copyright"; break; |
|
case MKTAG( 'd','e','s','c'): key = "description"; break; |
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case MKTAG( 'd','i','s','k'): key = "disc"; |
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parse = mov_metadata_track_or_disc_number; break; |
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case MKTAG( 'e','g','i','d'): key = "episode_uid"; |
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parse = mov_metadata_int8_no_padding; break; |
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case MKTAG( 'F','I','R','M'): key = "firmware"; raw = 1; break; |
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case MKTAG( 'g','n','r','e'): key = "genre"; |
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parse = mov_metadata_gnre; break; |
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case MKTAG( 'h','d','v','d'): key = "hd_video"; |
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parse = mov_metadata_int8_no_padding; break; |
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case MKTAG( 'H','M','M','T'): |
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return mov_metadata_hmmt(c, pb, atom.size); |
|
case MKTAG( 'k','e','y','w'): key = "keywords"; break; |
|
case MKTAG( 'l','d','e','s'): key = "synopsis"; break; |
|
case MKTAG( 'l','o','c','i'): |
|
return mov_metadata_loci(c, pb, atom.size); |
|
case MKTAG( 'm','a','n','u'): key = "make"; break; |
|
case MKTAG( 'm','o','d','l'): key = "model"; break; |
|
case MKTAG( 'p','c','s','t'): key = "podcast"; |
|
parse = mov_metadata_int8_no_padding; break; |
|
case MKTAG( 'p','g','a','p'): key = "gapless_playback"; |
|
parse = mov_metadata_int8_no_padding; break; |
|
case MKTAG( 'p','u','r','d'): key = "purchase_date"; break; |
|
case MKTAG( 'r','t','n','g'): key = "rating"; |
|
parse = mov_metadata_int8_no_padding; break; |
|
case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break; |
|
case MKTAG( 's','o','a','l'): key = "sort_album"; break; |
|
case MKTAG( 's','o','a','r'): key = "sort_artist"; break; |
|
case MKTAG( 's','o','c','o'): key = "sort_composer"; break; |
|
case MKTAG( 's','o','n','m'): key = "sort_name"; break; |
|
case MKTAG( 's','o','s','n'): key = "sort_show"; break; |
|
case MKTAG( 's','t','i','k'): key = "media_type"; |
|
parse = mov_metadata_int8_no_padding; break; |
|
case MKTAG( 't','r','k','n'): key = "track"; |
|
parse = mov_metadata_track_or_disc_number; break; |
|
case MKTAG( 't','v','e','n'): key = "episode_id"; break; |
|
case MKTAG( 't','v','e','s'): key = "episode_sort"; |
|
parse = mov_metadata_int8_bypass_padding; break; |
|
case MKTAG( 't','v','n','n'): key = "network"; break; |
|
case MKTAG( 't','v','s','h'): key = "show"; break; |
|
case MKTAG( 't','v','s','n'): key = "season_number"; |
|
parse = mov_metadata_int8_bypass_padding; break; |
|
case MKTAG(0xa9,'A','R','T'): key = "artist"; break; |
|
case MKTAG(0xa9,'P','R','D'): key = "producer"; break; |
|
case MKTAG(0xa9,'a','l','b'): key = "album"; break; |
|
case MKTAG(0xa9,'a','u','t'): key = "artist"; break; |
|
case MKTAG(0xa9,'c','h','p'): key = "chapter"; break; |
|
case MKTAG(0xa9,'c','m','t'): key = "comment"; break; |
|
case MKTAG(0xa9,'c','o','m'): key = "composer"; break; |
|
case MKTAG(0xa9,'c','p','y'): key = "copyright"; break; |
|
case MKTAG(0xa9,'d','a','y'): key = "date"; break; |
|
case MKTAG(0xa9,'d','i','r'): key = "director"; break; |
|
case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break; |
|
case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break; |
|
case MKTAG(0xa9,'e','n','c'): key = "encoder"; break; |
|
case MKTAG(0xa9,'f','m','t'): key = "original_format"; break; |
|
case MKTAG(0xa9,'g','e','n'): key = "genre"; break; |
|
case MKTAG(0xa9,'g','r','p'): key = "grouping"; break; |
|
case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break; |
|
case MKTAG(0xa9,'i','n','f'): key = "comment"; break; |
|
case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break; |
|
case MKTAG(0xa9,'m','a','k'): key = "make"; break; |
|
case MKTAG(0xa9,'m','o','d'): key = "model"; break; |
|
case MKTAG(0xa9,'n','a','m'): key = "title"; break; |
|
case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break; |
|
case MKTAG(0xa9,'p','r','d'): key = "producer"; break; |
|
case MKTAG(0xa9,'p','r','f'): key = "performers"; break; |
|
case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break; |
|
case MKTAG(0xa9,'s','r','c'): key = "original_source"; break; |
|
case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break; |
|
case MKTAG(0xa9,'s','w','r'): key = "encoder"; break; |
|
case MKTAG(0xa9,'t','o','o'): key = "encoder"; break; |
|
case MKTAG(0xa9,'t','r','k'): key = "track"; break; |
|
case MKTAG(0xa9,'u','r','l'): key = "URL"; break; |
|
case MKTAG(0xa9,'w','r','n'): key = "warning"; break; |
|
case MKTAG(0xa9,'w','r','t'): key = "composer"; break; |
|
case MKTAG(0xa9,'x','y','z'): key = "location"; break; |
|
} |
|
retry: |
|
if (c->itunes_metadata && atom.size > 8) { |
|
int data_size = avio_rb32(pb); |
|
int tag = avio_rl32(pb); |
|
if (tag == MKTAG('d','a','t','a') && data_size <= atom.size) { |
|
data_type = avio_rb32(pb); // type |
|
avio_rb32(pb); // unknown |
|
str_size = data_size - 16; |
|
atom.size -= 16; |
|
|
|
if (atom.type == MKTAG('c', 'o', 'v', 'r')) { |
|
int ret = mov_read_covr(c, pb, data_type, str_size); |
|
if (ret < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n"); |
|
return ret; |
|
} |
|
atom.size -= str_size; |
|
if (atom.size > 8) |
|
goto retry; |
|
return ret; |
|
} else if (!key && c->found_hdlr_mdta && c->meta_keys) { |
|
uint32_t index = AV_RB32(&atom.type); |
|
if (index < c->meta_keys_count && index > 0) { |
|
key = c->meta_keys[index]; |
|
} else { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"The index of 'data' is out of range: %"PRId32" < 1 or >= %d.\n", |
|
index, c->meta_keys_count); |
|
} |
|
} |
|
} else return 0; |
|
} else if (atom.size > 4 && key && !c->itunes_metadata && !raw) { |
|
str_size = avio_rb16(pb); // string length |
|
if (str_size > atom.size) { |
|
raw = 1; |
|
avio_seek(pb, -2, SEEK_CUR); |
|
av_log(c->fc, AV_LOG_WARNING, "UDTA parsing failed retrying raw\n"); |
|
goto retry; |
|
} |
|
langcode = avio_rb16(pb); |
|
ff_mov_lang_to_iso639(langcode, language); |
|
atom.size -= 4; |
|
} else |
|
str_size = atom.size; |
|
|
|
if (c->export_all && !key) { |
|
key = av_fourcc_make_string(tmp_key, atom.type); |
|
} |
|
|
|
if (!key) |
|
return 0; |
|
if (atom.size < 0 || str_size >= INT_MAX/2) |
|
return AVERROR_INVALIDDATA; |
|
|
|
// Allocates enough space if data_type is a int32 or float32 number, otherwise |
|
// worst-case requirement for output string in case of utf8 coded input |
|
num = (data_type >= 21 && data_type <= 23); |
|
str_size_alloc = (num ? 512 : (raw ? str_size : str_size * 2)) + 1; |
|
str = av_mallocz(str_size_alloc); |
|
if (!str) |
|
return AVERROR(ENOMEM); |
|
|
|
if (parse) |
|
parse(c, pb, str_size, key); |
|
else { |
|
if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded |
|
mov_read_mac_string(c, pb, str_size, str, str_size_alloc); |
|
} else if (data_type == 21) { // BE signed integer, variable size |
|
int val = 0; |
|
if (str_size == 1) |
|
val = (int8_t)avio_r8(pb); |
|
else if (str_size == 2) |
|
val = (int16_t)avio_rb16(pb); |
|
else if (str_size == 3) |
|
val = ((int32_t)(avio_rb24(pb)<<8))>>8; |
|
else if (str_size == 4) |
|
val = (int32_t)avio_rb32(pb); |
|
if (snprintf(str, str_size_alloc, "%d", val) >= str_size_alloc) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Failed to store the number (%d) in string.\n", val); |
|
av_free(str); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} else if (data_type == 22) { // BE unsigned integer, variable size |
|
unsigned int val = 0; |
|
if (str_size == 1) |
|
val = avio_r8(pb); |
|
else if (str_size == 2) |
|
val = avio_rb16(pb); |
|
else if (str_size == 3) |
|
val = avio_rb24(pb); |
|
else if (str_size == 4) |
|
val = avio_rb32(pb); |
|
if (snprintf(str, str_size_alloc, "%u", val) >= str_size_alloc) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Failed to store the number (%u) in string.\n", val); |
|
av_free(str); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} else if (data_type == 23 && str_size >= 4) { // BE float32 |
|
float val = av_int2float(avio_rb32(pb)); |
|
if (snprintf(str, str_size_alloc, "%f", val) >= str_size_alloc) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Failed to store the float32 number (%f) in string.\n", val); |
|
av_free(str); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} else { |
|
int ret = ffio_read_size(pb, str, str_size); |
|
if (ret < 0) { |
|
av_free(str); |
|
return ret; |
|
} |
|
str[str_size] = 0; |
|
} |
|
c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
|
av_dict_set(&c->fc->metadata, key, str, 0); |
|
if (*language && strcmp(language, "und")) { |
|
snprintf(key2, sizeof(key2), "%s-%s", key, language); |
|
av_dict_set(&c->fc->metadata, key2, str, 0); |
|
} |
|
if (!strcmp(key, "encoder")) { |
|
int major, minor, micro; |
|
if (sscanf(str, "HandBrake %d.%d.%d", &major, &minor, µ) == 3) { |
|
c->handbrake_version = 1000000*major + 1000*minor + micro; |
|
} |
|
} |
|
} |
|
|
|
av_freep(&str); |
|
return 0; |
|
} |
|
|
|
static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int64_t start; |
|
int i, nb_chapters, str_len, version; |
|
char str[256+1]; |
|
int ret; |
|
|
|
if (c->ignore_chapters) |
|
return 0; |
|
|
|
if ((atom.size -= 5) < 0) |
|
return 0; |
|
|
|
version = avio_r8(pb); |
|
avio_rb24(pb); |
|
if (version) |
|
avio_rb32(pb); // ??? |
|
nb_chapters = avio_r8(pb); |
|
|
|
for (i = 0; i < nb_chapters; i++) { |
|
if (atom.size < 9) |
|
return 0; |
|
|
|
start = avio_rb64(pb); |
|
str_len = avio_r8(pb); |
|
|
|
if ((atom.size -= 9+str_len) < 0) |
|
return 0; |
|
|
|
ret = ffio_read_size(pb, str, str_len); |
|
if (ret < 0) |
|
return ret; |
|
str[str_len] = 0; |
|
avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str); |
|
} |
|
return 0; |
|
} |
|
|
|
#define MIN_DATA_ENTRY_BOX_SIZE 12 |
|
static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int entries, i, j; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_rb32(pb); // version + flags |
|
entries = avio_rb32(pb); |
|
if (!entries || |
|
entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 || |
|
entries >= UINT_MAX / sizeof(*sc->drefs)) |
|
return AVERROR_INVALIDDATA; |
|
|
|
for (i = 0; i < sc->drefs_count; i++) { |
|
MOVDref *dref = &sc->drefs[i]; |
|
av_freep(&dref->path); |
|
av_freep(&dref->dir); |
|
} |
|
av_free(sc->drefs); |
|
sc->drefs_count = 0; |
|
sc->drefs = av_mallocz(entries * sizeof(*sc->drefs)); |
|
if (!sc->drefs) |
|
return AVERROR(ENOMEM); |
|
sc->drefs_count = entries; |
|
|
|
for (i = 0; i < entries; i++) { |
|
MOVDref *dref = &sc->drefs[i]; |
|
uint32_t size = avio_rb32(pb); |
|
int64_t next = avio_tell(pb) + size - 4; |
|
|
|
if (size < 12) |
|
return AVERROR_INVALIDDATA; |
|
|
|
dref->type = avio_rl32(pb); |
|
avio_rb32(pb); // version + flags |
|
|
|
if (dref->type == MKTAG('a','l','i','s') && size > 150) { |
|
/* macintosh alias record */ |
|
uint16_t volume_len, len; |
|
int16_t type; |
|
int ret; |
|
|
|
avio_skip(pb, 10); |
|
|
|
volume_len = avio_r8(pb); |
|
volume_len = FFMIN(volume_len, 27); |
|
ret = ffio_read_size(pb, dref->volume, 27); |
|
if (ret < 0) |
|
return ret; |
|
dref->volume[volume_len] = 0; |
|
av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len); |
|
|
|
avio_skip(pb, 12); |
|
|
|
len = avio_r8(pb); |
|
len = FFMIN(len, 63); |
|
ret = ffio_read_size(pb, dref->filename, 63); |
|
if (ret < 0) |
|
return ret; |
|
dref->filename[len] = 0; |
|
av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len); |
|
|
|
avio_skip(pb, 16); |
|
|
|
/* read next level up_from_alias/down_to_target */ |
|
dref->nlvl_from = avio_rb16(pb); |
|
dref->nlvl_to = avio_rb16(pb); |
|
av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n", |
|
dref->nlvl_from, dref->nlvl_to); |
|
|
|
avio_skip(pb, 16); |
|
|
|
for (type = 0; type != -1 && avio_tell(pb) < next; ) { |
|
if (avio_feof(pb)) |
|
return AVERROR_EOF; |
|
type = avio_rb16(pb); |
|
len = avio_rb16(pb); |
|
av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len); |
|
if (len&1) |
|
len += 1; |
|
if (type == 2) { // absolute path |
|
av_free(dref->path); |
|
dref->path = av_mallocz(len+1); |
|
if (!dref->path) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = ffio_read_size(pb, dref->path, len); |
|
if (ret < 0) { |
|
av_freep(&dref->path); |
|
return ret; |
|
} |
|
if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) { |
|
len -= volume_len; |
|
memmove(dref->path, dref->path+volume_len, len); |
|
dref->path[len] = 0; |
|
} |
|
// trim string of any ending zeros |
|
for (j = len - 1; j >= 0; j--) { |
|
if (dref->path[j] == 0) |
|
len--; |
|
else |
|
break; |
|
} |
|
for (j = 0; j < len; j++) |
|
if (dref->path[j] == ':' || dref->path[j] == 0) |
|
dref->path[j] = '/'; |
|
av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path); |
|
} else if (type == 0) { // directory name |
|
av_free(dref->dir); |
|
dref->dir = av_malloc(len+1); |
|
if (!dref->dir) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = ffio_read_size(pb, dref->dir, len); |
|
if (ret < 0) { |
|
av_freep(&dref->dir); |
|
return ret; |
|
} |
|
dref->dir[len] = 0; |
|
for (j = 0; j < len; j++) |
|
if (dref->dir[j] == ':') |
|
dref->dir[j] = '/'; |
|
av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir); |
|
} else |
|
avio_skip(pb, len); |
|
} |
|
} else { |
|
av_log(c->fc, AV_LOG_DEBUG, "Unknown dref type 0x%08"PRIx32" size %"PRIu32"\n", |
|
dref->type, size); |
|
entries--; |
|
i--; |
|
} |
|
avio_seek(pb, next, SEEK_SET); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
uint32_t type; |
|
uint32_t ctype; |
|
int64_t title_size; |
|
char *title_str; |
|
int ret; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
/* component type */ |
|
ctype = avio_rl32(pb); |
|
type = avio_rl32(pb); /* component subtype */ |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "ctype=%s\n", av_fourcc2str(ctype)); |
|
av_log(c->fc, AV_LOG_TRACE, "stype=%s\n", av_fourcc2str(type)); |
|
|
|
if (c->trak_index < 0) { // meta not inside a trak |
|
if (type == MKTAG('m','d','t','a')) { |
|
c->found_hdlr_mdta = 1; |
|
} |
|
return 0; |
|
} |
|
|
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if (type == MKTAG('v','i','d','e')) |
|
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; |
|
else if (type == MKTAG('s','o','u','n')) |
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
|
else if (type == MKTAG('m','1','a',' ')) |
|
st->codecpar->codec_id = AV_CODEC_ID_MP2; |
|
else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p'))) |
|
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; |
|
|
|
avio_rb32(pb); /* component manufacture */ |
|
avio_rb32(pb); /* component flags */ |
|
avio_rb32(pb); /* component flags mask */ |
|
|
|
title_size = atom.size - 24; |
|
if (title_size > 0) { |
|
if (title_size > FFMIN(INT_MAX, SIZE_MAX-1)) |
|
return AVERROR_INVALIDDATA; |
|
title_str = av_malloc(title_size + 1); /* Add null terminator */ |
|
if (!title_str) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = ffio_read_size(pb, title_str, title_size); |
|
if (ret < 0) { |
|
av_freep(&title_str); |
|
return ret; |
|
} |
|
title_str[title_size] = 0; |
|
if (title_str[0]) { |
|
int off = (!c->isom && title_str[0] == title_size - 1); |
|
// flag added so as to not set stream handler name if already set from mdia->hdlr |
|
av_dict_set(&st->metadata, "handler_name", title_str + off, AV_DICT_DONT_OVERWRITE); |
|
} |
|
av_freep(&title_str); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
return ff_mov_read_esds(c->fc, pb); |
|
} |
|
|
|
static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
enum AVAudioServiceType *ast; |
|
int ac3info, acmod, lfeon, bsmod; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE, |
|
sizeof(*ast)); |
|
if (!ast) |
|
return AVERROR(ENOMEM); |
|
|
|
ac3info = avio_rb24(pb); |
|
bsmod = (ac3info >> 14) & 0x7; |
|
acmod = (ac3info >> 11) & 0x7; |
|
lfeon = (ac3info >> 10) & 0x1; |
|
st->codecpar->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon; |
|
st->codecpar->channel_layout = avpriv_ac3_channel_layout_tab[acmod]; |
|
if (lfeon) |
|
st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY; |
|
*ast = bsmod; |
|
if (st->codecpar->channels > 1 && bsmod == 0x7) |
|
*ast = AV_AUDIO_SERVICE_TYPE_KARAOKE; |
|
|
|
#if FF_API_LAVF_AVCTX |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
st->codec->audio_service_type = *ast; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
enum AVAudioServiceType *ast; |
|
int eac3info, acmod, lfeon, bsmod; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE, |
|
sizeof(*ast)); |
|
if (!ast) |
|
return AVERROR(ENOMEM); |
|
|
|
/* No need to parse fields for additional independent substreams and its |
|
* associated dependent substreams since libavcodec's E-AC-3 decoder |
|
* does not support them yet. */ |
|
avio_rb16(pb); /* data_rate and num_ind_sub */ |
|
eac3info = avio_rb24(pb); |
|
bsmod = (eac3info >> 12) & 0x1f; |
|
acmod = (eac3info >> 9) & 0x7; |
|
lfeon = (eac3info >> 8) & 0x1; |
|
st->codecpar->channel_layout = avpriv_ac3_channel_layout_tab[acmod]; |
|
if (lfeon) |
|
st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY; |
|
st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout); |
|
*ast = bsmod; |
|
if (st->codecpar->channels > 1 && bsmod == 0x7) |
|
*ast = AV_AUDIO_SERVICE_TYPE_KARAOKE; |
|
|
|
#if FF_API_LAVF_AVCTX |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
st->codec->audio_service_type = *ast; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_ddts(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
#define DDTS_SIZE 20 |
|
uint8_t buf[DDTS_SIZE + AV_INPUT_BUFFER_PADDING_SIZE]; |
|
AVStream *st = NULL; |
|
uint32_t frame_duration_code = 0; |
|
uint32_t channel_layout_code = 0; |
|
GetBitContext gb; |
|
int ret; |
|
|
|
if ((ret = ffio_read_size(pb, buf, DDTS_SIZE)) < 0) |
|
return ret; |
|
|
|
init_get_bits(&gb, buf, 8 * DDTS_SIZE); |
|
|
|
if (c->fc->nb_streams < 1) { |
|
return 0; |
|
} |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
st->codecpar->sample_rate = get_bits_long(&gb, 32); |
|
if (st->codecpar->sample_rate <= 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
skip_bits_long(&gb, 32); /* max bitrate */ |
|
st->codecpar->bit_rate = get_bits_long(&gb, 32); |
|
st->codecpar->bits_per_coded_sample = get_bits(&gb, 8); |
|
frame_duration_code = get_bits(&gb, 2); |
|
skip_bits(&gb, 30); /* various fields */ |
|
channel_layout_code = get_bits(&gb, 16); |
|
|
|
st->codecpar->frame_size = |
|
(frame_duration_code == 0) ? 512 : |
|
(frame_duration_code == 1) ? 1024 : |
|
(frame_duration_code == 2) ? 2048 : |
|
(frame_duration_code == 3) ? 4096 : 0; |
|
|
|
if (channel_layout_code > 0xff) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unsupported DTS audio channel layout\n"); |
|
} |
|
st->codecpar->channel_layout = |
|
((channel_layout_code & 0x1) ? AV_CH_FRONT_CENTER : 0) | |
|
((channel_layout_code & 0x2) ? AV_CH_FRONT_LEFT : 0) | |
|
((channel_layout_code & 0x2) ? AV_CH_FRONT_RIGHT : 0) | |
|
((channel_layout_code & 0x4) ? AV_CH_SIDE_LEFT : 0) | |
|
((channel_layout_code & 0x4) ? AV_CH_SIDE_RIGHT : 0) | |
|
((channel_layout_code & 0x8) ? AV_CH_LOW_FREQUENCY : 0); |
|
|
|
st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if (atom.size < 16) |
|
return 0; |
|
|
|
/* skip version and flags */ |
|
avio_skip(pb, 4); |
|
|
|
ff_mov_read_chan(c->fc, pb, st, atom.size - 4); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((ret = ff_get_wav_header(c->fc, pb, st->codecpar, atom.size, 0)) < 0) |
|
av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n"); |
|
|
|
return ret; |
|
} |
|
|
|
static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
const int num = avio_rb32(pb); |
|
const int den = avio_rb32(pb); |
|
AVStream *st; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default |
|
(den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n", |
|
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, |
|
num, den); |
|
} else if (den != 0) { |
|
av_reduce(&st->sample_aspect_ratio.num, &st->sample_aspect_ratio.den, |
|
num, den, 32767); |
|
} |
|
return 0; |
|
} |
|
|
|
/* this atom contains actual media data */ |
|
static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
if (atom.size == 0) /* wrong one (MP4) */ |
|
return 0; |
|
c->found_mdat=1; |
|
return 0; /* now go for moov */ |
|
} |
|
|
|
#define DRM_BLOB_SIZE 56 |
|
|
|
static int mov_read_adrm(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
uint8_t intermediate_key[20]; |
|
uint8_t intermediate_iv[20]; |
|
uint8_t input[64]; |
|
uint8_t output[64]; |
|
uint8_t file_checksum[20]; |
|
uint8_t calculated_checksum[20]; |
|
struct AVSHA *sha; |
|
int i; |
|
int ret = 0; |
|
uint8_t *activation_bytes = c->activation_bytes; |
|
uint8_t *fixed_key = c->audible_fixed_key; |
|
|
|
c->aax_mode = 1; |
|
|
|
sha = av_sha_alloc(); |
|
if (!sha) |
|
return AVERROR(ENOMEM); |
|
av_free(c->aes_decrypt); |
|
c->aes_decrypt = av_aes_alloc(); |
|
if (!c->aes_decrypt) { |
|
ret = AVERROR(ENOMEM); |
|
goto fail; |
|
} |
|
|
|
/* drm blob processing */ |
|
avio_read(pb, output, 8); // go to offset 8, absolute position 0x251 |
|
avio_read(pb, input, DRM_BLOB_SIZE); |
|
avio_read(pb, output, 4); // go to offset 4, absolute position 0x28d |
|
avio_read(pb, file_checksum, 20); |
|
|
|
av_log(c->fc, AV_LOG_INFO, "[aax] file checksum == "); // required by external tools |
|
for (i = 0; i < 20; i++) |
|
av_log(c->fc, AV_LOG_INFO, "%02x", file_checksum[i]); |
|
av_log(c->fc, AV_LOG_INFO, "\n"); |
|
|
|
/* verify activation data */ |
|
if (!activation_bytes) { |
|
av_log(c->fc, AV_LOG_WARNING, "[aax] activation_bytes option is missing!\n"); |
|
ret = 0; /* allow ffprobe to continue working on .aax files */ |
|
goto fail; |
|
} |
|
if (c->activation_bytes_size != 4) { |
|
av_log(c->fc, AV_LOG_FATAL, "[aax] activation_bytes value needs to be 4 bytes!\n"); |
|
ret = AVERROR(EINVAL); |
|
goto fail; |
|
} |
|
|
|
/* verify fixed key */ |
|
if (c->audible_fixed_key_size != 16) { |
|
av_log(c->fc, AV_LOG_FATAL, "[aax] audible_fixed_key value needs to be 16 bytes!\n"); |
|
ret = AVERROR(EINVAL); |
|
goto fail; |
|
} |
|
|
|
/* AAX (and AAX+) key derivation */ |
|
av_sha_init(sha, 160); |
|
av_sha_update(sha, fixed_key, 16); |
|
av_sha_update(sha, activation_bytes, 4); |
|
av_sha_final(sha, intermediate_key); |
|
av_sha_init(sha, 160); |
|
av_sha_update(sha, fixed_key, 16); |
|
av_sha_update(sha, intermediate_key, 20); |
|
av_sha_update(sha, activation_bytes, 4); |
|
av_sha_final(sha, intermediate_iv); |
|
av_sha_init(sha, 160); |
|
av_sha_update(sha, intermediate_key, 16); |
|
av_sha_update(sha, intermediate_iv, 16); |
|
av_sha_final(sha, calculated_checksum); |
|
if (memcmp(calculated_checksum, file_checksum, 20)) { // critical error |
|
av_log(c->fc, AV_LOG_ERROR, "[aax] mismatch in checksums!\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
av_aes_init(c->aes_decrypt, intermediate_key, 128, 1); |
|
av_aes_crypt(c->aes_decrypt, output, input, DRM_BLOB_SIZE >> 4, intermediate_iv, 1); |
|
for (i = 0; i < 4; i++) { |
|
// file data (in output) is stored in big-endian mode |
|
if (activation_bytes[i] != output[3 - i]) { // critical error |
|
av_log(c->fc, AV_LOG_ERROR, "[aax] error in drm blob decryption!\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
} |
|
memcpy(c->file_key, output + 8, 16); |
|
memcpy(input, output + 26, 16); |
|
av_sha_init(sha, 160); |
|
av_sha_update(sha, input, 16); |
|
av_sha_update(sha, c->file_key, 16); |
|
av_sha_update(sha, fixed_key, 16); |
|
av_sha_final(sha, c->file_iv); |
|
|
|
fail: |
|
av_free(sha); |
|
|
|
return ret; |
|
} |
|
|
|
static int mov_aaxc_crypto(MOVContext *c) |
|
{ |
|
if (c->audible_key_size != 16) { |
|
av_log(c->fc, AV_LOG_FATAL, "[aaxc] audible_key value needs to be 16 bytes!\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
if (c->audible_iv_size != 16) { |
|
av_log(c->fc, AV_LOG_FATAL, "[aaxc] audible_iv value needs to be 16 bytes!\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
c->aes_decrypt = av_aes_alloc(); |
|
if (!c->aes_decrypt) { |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
memcpy(c->file_key, c->audible_key, 16); |
|
memcpy(c->file_iv, c->audible_iv, 16); |
|
c->aax_mode = 1; |
|
|
|
return 0; |
|
} |
|
|
|
// Audible AAX (and AAX+) bytestream decryption |
|
static int aax_filter(uint8_t *input, int size, MOVContext *c) |
|
{ |
|
int blocks = 0; |
|
unsigned char iv[16]; |
|
|
|
memcpy(iv, c->file_iv, 16); // iv is overwritten |
|
blocks = size >> 4; // trailing bytes are not encrypted! |
|
av_aes_init(c->aes_decrypt, c->file_key, 128, 1); |
|
av_aes_crypt(c->aes_decrypt, input, input, blocks, iv, 1); |
|
|
|
return 0; |
|
} |
|
|
|
/* read major brand, minor version and compatible brands and store them as metadata */ |
|
static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
uint32_t minor_ver; |
|
int comp_brand_size; |
|
char* comp_brands_str; |
|
uint8_t type[5] = {0}; |
|
int ret = ffio_read_size(pb, type, 4); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (strcmp(type, "qt ")) |
|
c->isom = 1; |
|
av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type); |
|
av_dict_set(&c->fc->metadata, "major_brand", type, 0); |
|
minor_ver = avio_rb32(pb); /* minor version */ |
|
av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0); |
|
|
|
comp_brand_size = atom.size - 8; |
|
if (comp_brand_size < 0 || comp_brand_size == INT_MAX) |
|
return AVERROR_INVALIDDATA; |
|
comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */ |
|
if (!comp_brands_str) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = ffio_read_size(pb, comp_brands_str, comp_brand_size); |
|
if (ret < 0) { |
|
av_freep(&comp_brands_str); |
|
return ret; |
|
} |
|
comp_brands_str[comp_brand_size] = 0; |
|
av_dict_set(&c->fc->metadata, "compatible_brands", |
|
comp_brands_str, AV_DICT_DONT_STRDUP_VAL); |
|
|
|
// Logic for handling Audible's .aaxc files |
|
if (!strcmp(type, "aaxc")) { |
|
mov_aaxc_crypto(c); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* this atom should contain all header atoms */ |
|
static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int ret; |
|
|
|
if (c->found_moov) { |
|
av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n"); |
|
avio_skip(pb, atom.size); |
|
return 0; |
|
} |
|
|
|
if ((ret = mov_read_default(c, pb, atom)) < 0) |
|
return ret; |
|
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */ |
|
/* so we don't parse the whole file if over a network */ |
|
c->found_moov=1; |
|
return 0; /* now go for mdat */ |
|
} |
|
|
|
static MOVFragmentStreamInfo * get_frag_stream_info( |
|
MOVFragmentIndex *frag_index, |
|
int index, |
|
int id) |
|
{ |
|
int i; |
|
MOVFragmentIndexItem * item; |
|
|
|
if (index < 0 || index >= frag_index->nb_items) |
|
return NULL; |
|
item = &frag_index->item[index]; |
|
for (i = 0; i < item->nb_stream_info; i++) |
|
if (item->stream_info[i].id == id) |
|
return &item->stream_info[i]; |
|
|
|
// This shouldn't happen |
|
return NULL; |
|
} |
|
|
|
static void set_frag_stream(MOVFragmentIndex *frag_index, int id) |
|
{ |
|
int i; |
|
MOVFragmentIndexItem * item; |
|
|
|
if (frag_index->current < 0 || |
|
frag_index->current >= frag_index->nb_items) |
|
return; |
|
|
|
item = &frag_index->item[frag_index->current]; |
|
for (i = 0; i < item->nb_stream_info; i++) |
|
if (item->stream_info[i].id == id) { |
|
item->current = i; |
|
return; |
|
} |
|
|
|
// id not found. This shouldn't happen. |
|
item->current = -1; |
|
} |
|
|
|
static MOVFragmentStreamInfo * get_current_frag_stream_info( |
|
MOVFragmentIndex *frag_index) |
|
{ |
|
MOVFragmentIndexItem *item; |
|
if (frag_index->current < 0 || |
|
frag_index->current >= frag_index->nb_items) |
|
return NULL; |
|
|
|
item = &frag_index->item[frag_index->current]; |
|
if (item->current >= 0 && item->current < item->nb_stream_info) |
|
return &item->stream_info[item->current]; |
|
|
|
// This shouldn't happen |
|
return NULL; |
|
} |
|
|
|
static int search_frag_moof_offset(MOVFragmentIndex *frag_index, int64_t offset) |
|
{ |
|
int a, b, m; |
|
int64_t moof_offset; |
|
|
|
// Optimize for appending new entries |
|
if (!frag_index->nb_items || |
|
frag_index->item[frag_index->nb_items - 1].moof_offset < offset) |
|
return frag_index->nb_items; |
|
|
|
a = -1; |
|
b = frag_index->nb_items; |
|
|
|
while (b - a > 1) { |
|
m = (a + b) >> 1; |
|
moof_offset = frag_index->item[m].moof_offset; |
|
if (moof_offset >= offset) |
|
b = m; |
|
if (moof_offset <= offset) |
|
a = m; |
|
} |
|
return b; |
|
} |
|
|
|
static int64_t get_stream_info_time(MOVFragmentStreamInfo * frag_stream_info) |
|
{ |
|
av_assert0(frag_stream_info); |
|
if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE) |
|
return frag_stream_info->sidx_pts; |
|
if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE) |
|
return frag_stream_info->first_tfra_pts; |
|
return frag_stream_info->tfdt_dts; |
|
} |
|
|
|
static int64_t get_frag_time(MOVFragmentIndex *frag_index, |
|
int index, int track_id) |
|
{ |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
int64_t timestamp; |
|
int i; |
|
|
|
if (track_id >= 0) { |
|
frag_stream_info = get_frag_stream_info(frag_index, index, track_id); |
|
return frag_stream_info->sidx_pts; |
|
} |
|
|
|
for (i = 0; i < frag_index->item[index].nb_stream_info; i++) { |
|
frag_stream_info = &frag_index->item[index].stream_info[i]; |
|
timestamp = get_stream_info_time(frag_stream_info); |
|
if (timestamp != AV_NOPTS_VALUE) |
|
return timestamp; |
|
} |
|
return AV_NOPTS_VALUE; |
|
} |
|
|
|
static int search_frag_timestamp(MOVFragmentIndex *frag_index, |
|
AVStream *st, int64_t timestamp) |
|
{ |
|
int a, b, m, m0; |
|
int64_t frag_time; |
|
int id = -1; |
|
|
|
if (st) { |
|
// If the stream is referenced by any sidx, limit the search |
|
// to fragments that referenced this stream in the sidx |
|
MOVStreamContext *sc = st->priv_data; |
|
if (sc->has_sidx) |
|
id = st->id; |
|
} |
|
|
|
a = -1; |
|
b = frag_index->nb_items; |
|
|
|
while (b - a > 1) { |
|
m0 = m = (a + b) >> 1; |
|
|
|
while (m < b && |
|
(frag_time = get_frag_time(frag_index, m, id)) == AV_NOPTS_VALUE) |
|
m++; |
|
|
|
if (m < b && frag_time <= timestamp) |
|
a = m; |
|
else |
|
b = m0; |
|
} |
|
|
|
return a; |
|
} |
|
|
|
static int update_frag_index(MOVContext *c, int64_t offset) |
|
{ |
|
int index, i; |
|
MOVFragmentIndexItem * item; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
|
|
// If moof_offset already exists in frag_index, return index to it |
|
index = search_frag_moof_offset(&c->frag_index, offset); |
|
if (index < c->frag_index.nb_items && |
|
c->frag_index.item[index].moof_offset == offset) |
|
return index; |
|
|
|
// offset is not yet in frag index. |
|
// Insert new item at index (sorted by moof offset) |
|
item = av_fast_realloc(c->frag_index.item, |
|
&c->frag_index.allocated_size, |
|
(c->frag_index.nb_items + 1) * |
|
sizeof(*c->frag_index.item)); |
|
if (!item) |
|
return -1; |
|
c->frag_index.item = item; |
|
|
|
frag_stream_info = av_realloc_array(NULL, c->fc->nb_streams, |
|
sizeof(*item->stream_info)); |
|
if (!frag_stream_info) |
|
return -1; |
|
|
|
for (i = 0; i < c->fc->nb_streams; i++) { |
|
// Avoid building frag index if streams lack track id. |
|
if (c->fc->streams[i]->id < 0) { |
|
av_free(frag_stream_info); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
frag_stream_info[i].id = c->fc->streams[i]->id; |
|
frag_stream_info[i].sidx_pts = AV_NOPTS_VALUE; |
|
frag_stream_info[i].tfdt_dts = AV_NOPTS_VALUE; |
|
frag_stream_info[i].next_trun_dts = AV_NOPTS_VALUE; |
|
frag_stream_info[i].first_tfra_pts = AV_NOPTS_VALUE; |
|
frag_stream_info[i].index_entry = -1; |
|
frag_stream_info[i].encryption_index = NULL; |
|
} |
|
|
|
if (index < c->frag_index.nb_items) |
|
memmove(c->frag_index.item + index + 1, c->frag_index.item + index, |
|
(c->frag_index.nb_items - index) * sizeof(*c->frag_index.item)); |
|
|
|
item = &c->frag_index.item[index]; |
|
item->headers_read = 0; |
|
item->current = 0; |
|
item->nb_stream_info = c->fc->nb_streams; |
|
item->moof_offset = offset; |
|
item->stream_info = frag_stream_info; |
|
c->frag_index.nb_items++; |
|
|
|
return index; |
|
} |
|
|
|
static void fix_frag_index_entries(MOVFragmentIndex *frag_index, int index, |
|
int id, int entries) |
|
{ |
|
int i; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
|
|
if (index < 0) |
|
return; |
|
for (i = index; i < frag_index->nb_items; i++) { |
|
frag_stream_info = get_frag_stream_info(frag_index, i, id); |
|
if (frag_stream_info && frag_stream_info->index_entry >= 0) |
|
frag_stream_info->index_entry += entries; |
|
} |
|
} |
|
|
|
static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
// Set by mov_read_tfhd(). mov_read_trun() will reject files missing tfhd. |
|
c->fragment.found_tfhd = 0; |
|
|
|
if (!c->has_looked_for_mfra && c->use_mfra_for > 0) { |
|
c->has_looked_for_mfra = 1; |
|
if (pb->seekable & AVIO_SEEKABLE_NORMAL) { |
|
int ret; |
|
av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look " |
|
"for a mfra\n"); |
|
if ((ret = mov_read_mfra(c, pb)) < 0) { |
|
av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to " |
|
"read the mfra (may be a live ismv)\n"); |
|
} |
|
} else { |
|
av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not " |
|
"seekable, can not look for mfra\n"); |
|
} |
|
} |
|
c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8; |
|
av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset); |
|
c->frag_index.current = update_frag_index(c, c->fragment.moof_offset); |
|
return mov_read_default(c, pb, atom); |
|
} |
|
|
|
static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time, void *logctx) |
|
{ |
|
if (time) { |
|
if (time >= 2082844800) |
|
time -= 2082844800; /* seconds between 1904-01-01 and Epoch */ |
|
|
|
if ((int64_t)(time * 1000000ULL) / 1000000 != time) { |
|
av_log(logctx, AV_LOG_DEBUG, "creation_time is not representable\n"); |
|
return; |
|
} |
|
|
|
avpriv_dict_set_timestamp(metadata, "creation_time", time * 1000000); |
|
} |
|
} |
|
|
|
static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int version; |
|
char language[4] = {0}; |
|
unsigned lang; |
|
int64_t creation_time; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
if (sc->time_scale) { |
|
av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
version = avio_r8(pb); |
|
if (version > 1) { |
|
avpriv_request_sample(c->fc, "Version %d", version); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
avio_rb24(pb); /* flags */ |
|
if (version == 1) { |
|
creation_time = avio_rb64(pb); |
|
avio_rb64(pb); |
|
} else { |
|
creation_time = avio_rb32(pb); |
|
avio_rb32(pb); /* modification time */ |
|
} |
|
mov_metadata_creation_time(&st->metadata, creation_time, c->fc); |
|
|
|
sc->time_scale = avio_rb32(pb); |
|
if (sc->time_scale <= 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid mdhd time scale %d, defaulting to 1\n", sc->time_scale); |
|
sc->time_scale = 1; |
|
} |
|
st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */ |
|
|
|
lang = avio_rb16(pb); /* language */ |
|
if (ff_mov_lang_to_iso639(lang, language)) |
|
av_dict_set(&st->metadata, "language", language, 0); |
|
avio_rb16(pb); /* quality */ |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int i; |
|
int64_t creation_time; |
|
int version = avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
if (version == 1) { |
|
creation_time = avio_rb64(pb); |
|
avio_rb64(pb); |
|
} else { |
|
creation_time = avio_rb32(pb); |
|
avio_rb32(pb); /* modification time */ |
|
} |
|
mov_metadata_creation_time(&c->fc->metadata, creation_time, c->fc); |
|
c->time_scale = avio_rb32(pb); /* time scale */ |
|
if (c->time_scale <= 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid mvhd time scale %d, defaulting to 1\n", c->time_scale); |
|
c->time_scale = 1; |
|
} |
|
av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale); |
|
|
|
c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */ |
|
// set the AVFormatContext duration because the duration of individual tracks |
|
// may be inaccurate |
|
if (!c->trex_data) |
|
c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale); |
|
avio_rb32(pb); /* preferred scale */ |
|
|
|
avio_rb16(pb); /* preferred volume */ |
|
|
|
avio_skip(pb, 10); /* reserved */ |
|
|
|
/* movie display matrix, store it in main context and use it later on */ |
|
for (i = 0; i < 3; i++) { |
|
c->movie_display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point |
|
c->movie_display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point |
|
c->movie_display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point |
|
} |
|
|
|
avio_rb32(pb); /* preview time */ |
|
avio_rb32(pb); /* preview duration */ |
|
avio_rb32(pb); /* poster time */ |
|
avio_rb32(pb); /* selection time */ |
|
avio_rb32(pb); /* selection duration */ |
|
avio_rb32(pb); /* current time */ |
|
avio_rb32(pb); /* next track ID */ |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int little_endian; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
little_endian = avio_rb16(pb) & 0xFF; |
|
av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian); |
|
if (little_endian == 1) { |
|
switch (st->codecpar->codec_id) { |
|
case AV_CODEC_ID_PCM_S24BE: |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S24LE; |
|
break; |
|
case AV_CODEC_ID_PCM_S32BE: |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE; |
|
break; |
|
case AV_CODEC_ID_PCM_F32BE: |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_F32LE; |
|
break; |
|
case AV_CODEC_ID_PCM_F64BE: |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_F64LE; |
|
break; |
|
default: |
|
break; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
uint8_t *icc_profile; |
|
char color_parameter_type[5] = { 0 }; |
|
uint16_t color_primaries, color_trc, color_matrix; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
|
|
ret = ffio_read_size(pb, color_parameter_type, 4); |
|
if (ret < 0) |
|
return ret; |
|
if (strncmp(color_parameter_type, "nclx", 4) && |
|
strncmp(color_parameter_type, "nclc", 4) && |
|
strncmp(color_parameter_type, "prof", 4)) { |
|
av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n", |
|
color_parameter_type); |
|
return 0; |
|
} |
|
|
|
if (!strncmp(color_parameter_type, "prof", 4)) { |
|
icc_profile = av_stream_new_side_data(st, AV_PKT_DATA_ICC_PROFILE, atom.size - 4); |
|
if (!icc_profile) |
|
return AVERROR(ENOMEM); |
|
ret = ffio_read_size(pb, icc_profile, atom.size - 4); |
|
if (ret < 0) |
|
return ret; |
|
} else { |
|
color_primaries = avio_rb16(pb); |
|
color_trc = avio_rb16(pb); |
|
color_matrix = avio_rb16(pb); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, |
|
"%s: pri %d trc %d matrix %d", |
|
color_parameter_type, color_primaries, color_trc, color_matrix); |
|
|
|
if (!strncmp(color_parameter_type, "nclx", 4)) { |
|
uint8_t color_range = avio_r8(pb) >> 7; |
|
av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range); |
|
if (color_range) |
|
st->codecpar->color_range = AVCOL_RANGE_JPEG; |
|
else |
|
st->codecpar->color_range = AVCOL_RANGE_MPEG; |
|
} |
|
|
|
if (!av_color_primaries_name(color_primaries)) |
|
color_primaries = AVCOL_PRI_UNSPECIFIED; |
|
if (!av_color_transfer_name(color_trc)) |
|
color_trc = AVCOL_TRC_UNSPECIFIED; |
|
if (!av_color_space_name(color_matrix)) |
|
color_matrix = AVCOL_SPC_UNSPECIFIED; |
|
|
|
st->codecpar->color_primaries = color_primaries; |
|
st->codecpar->color_trc = color_trc; |
|
st->codecpar->color_space = color_matrix; |
|
av_log(c->fc, AV_LOG_TRACE, "\n"); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
unsigned mov_field_order; |
|
enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN; |
|
|
|
if (c->fc->nb_streams < 1) // will happen with jp2 files |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
if (atom.size < 2) |
|
return AVERROR_INVALIDDATA; |
|
mov_field_order = avio_rb16(pb); |
|
if ((mov_field_order & 0xFF00) == 0x0100) |
|
decoded_field_order = AV_FIELD_PROGRESSIVE; |
|
else if ((mov_field_order & 0xFF00) == 0x0200) { |
|
switch (mov_field_order & 0xFF) { |
|
case 0x01: decoded_field_order = AV_FIELD_TT; |
|
break; |
|
case 0x06: decoded_field_order = AV_FIELD_BB; |
|
break; |
|
case 0x09: decoded_field_order = AV_FIELD_TB; |
|
break; |
|
case 0x0E: decoded_field_order = AV_FIELD_BT; |
|
break; |
|
} |
|
} |
|
if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) { |
|
av_log(c->fc, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order); |
|
} |
|
st->codecpar->field_order = decoded_field_order; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_realloc_extradata(AVCodecParameters *par, MOVAtom atom) |
|
{ |
|
int err = 0; |
|
uint64_t size = (uint64_t)par->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE; |
|
if (size > INT_MAX || (uint64_t)atom.size > INT_MAX) |
|
return AVERROR_INVALIDDATA; |
|
if ((err = av_reallocp(&par->extradata, size)) < 0) { |
|
par->extradata_size = 0; |
|
return err; |
|
} |
|
par->extradata_size = size - AV_INPUT_BUFFER_PADDING_SIZE; |
|
return 0; |
|
} |
|
|
|
/* Read a whole atom into the extradata return the size of the atom read, possibly truncated if != atom.size */ |
|
static int64_t mov_read_atom_into_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, |
|
AVCodecParameters *par, uint8_t *buf) |
|
{ |
|
int64_t result = atom.size; |
|
int err; |
|
|
|
AV_WB32(buf , atom.size + 8); |
|
AV_WL32(buf + 4, atom.type); |
|
err = ffio_read_size(pb, buf + 8, atom.size); |
|
if (err < 0) { |
|
par->extradata_size -= atom.size; |
|
return err; |
|
} else if (err < atom.size) { |
|
av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n"); |
|
par->extradata_size -= atom.size - err; |
|
result = err; |
|
} |
|
memset(buf + 8 + err, 0, AV_INPUT_BUFFER_PADDING_SIZE); |
|
return result; |
|
} |
|
|
|
/* FIXME modify QDM2/SVQ3/H.264 decoders to take full atom as extradata */ |
|
static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, |
|
enum AVCodecID codec_id) |
|
{ |
|
AVStream *st; |
|
uint64_t original_size; |
|
int err; |
|
|
|
if (c->fc->nb_streams < 1) // will happen with jp2 files |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if (st->codecpar->codec_id != codec_id) |
|
return 0; /* unexpected codec_id - don't mess with extradata */ |
|
|
|
original_size = st->codecpar->extradata_size; |
|
err = mov_realloc_extradata(st->codecpar, atom); |
|
if (err) |
|
return err; |
|
|
|
err = mov_read_atom_into_extradata(c, pb, atom, st->codecpar, st->codecpar->extradata + original_size); |
|
if (err < 0) |
|
return err; |
|
return 0; // Note: this is the original behavior to ignore truncation. |
|
} |
|
|
|
/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */ |
|
static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC); |
|
} |
|
|
|
static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS); |
|
} |
|
|
|
static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000); |
|
} |
|
|
|
static int mov_read_dpxe(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
return mov_read_extradata(c, pb, atom, AV_CODEC_ID_R10K); |
|
} |
|
|
|
static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI); |
|
if (!ret) |
|
ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD); |
|
return ret; |
|
} |
|
|
|
static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216); |
|
|
|
if (!ret && c->fc->nb_streams >= 1) { |
|
AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar; |
|
if (par->extradata_size >= 40) { |
|
par->height = AV_RB16(&par->extradata[36]); |
|
par->width = AV_RB16(&par->extradata[38]); |
|
} |
|
} |
|
return ret; |
|
} |
|
|
|
static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
if (c->fc->nb_streams >= 1) { |
|
AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar; |
|
if (par->codec_tag == MKTAG('A', 'V', 'i', 'n') && |
|
par->codec_id == AV_CODEC_ID_H264 && |
|
atom.size > 11) { |
|
int cid; |
|
avio_skip(pb, 10); |
|
cid = avio_rb16(pb); |
|
/* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */ |
|
if (cid == 0xd4d || cid == 0xd4e) |
|
par->width = 1440; |
|
return 0; |
|
} else if ((par->codec_tag == MKTAG('A', 'V', 'd', '1') || |
|
par->codec_tag == MKTAG('A', 'V', 'j', '2') || |
|
par->codec_tag == MKTAG('A', 'V', 'd', 'n')) && |
|
atom.size >= 24) { |
|
int num, den; |
|
avio_skip(pb, 12); |
|
num = avio_rb32(pb); |
|
den = avio_rb32(pb); |
|
if (num <= 0 || den <= 0) |
|
return 0; |
|
switch (avio_rb32(pb)) { |
|
case 2: |
|
if (den >= INT_MAX / 2) |
|
return 0; |
|
den *= 2; |
|
case 1: |
|
c->fc->streams[c->fc->nb_streams-1]->internal->display_aspect_ratio.num = num; |
|
c->fc->streams[c->fc->nb_streams-1]->internal->display_aspect_ratio.den = den; |
|
default: |
|
return 0; |
|
} |
|
} |
|
} |
|
|
|
return mov_read_avid(c, pb, atom); |
|
} |
|
|
|
static int mov_read_aclr(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int ret = 0; |
|
int length = 0; |
|
uint64_t original_size; |
|
if (c->fc->nb_streams >= 1) { |
|
AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar; |
|
if (par->codec_id == AV_CODEC_ID_H264) |
|
return 0; |
|
if (atom.size == 16) { |
|
original_size = par->extradata_size; |
|
ret = mov_realloc_extradata(par, atom); |
|
if (!ret) { |
|
length = mov_read_atom_into_extradata(c, pb, atom, par, par->extradata + original_size); |
|
if (length == atom.size) { |
|
const uint8_t range_value = par->extradata[original_size + 19]; |
|
switch (range_value) { |
|
case 1: |
|
par->color_range = AVCOL_RANGE_MPEG; |
|
break; |
|
case 2: |
|
par->color_range = AVCOL_RANGE_JPEG; |
|
break; |
|
default: |
|
av_log(c->fc, AV_LOG_WARNING, "ignored unknown aclr value (%d)\n", range_value); |
|
break; |
|
} |
|
ff_dlog(c->fc, "color_range: %d\n", par->color_range); |
|
} else { |
|
/* For some reason the whole atom was not added to the extradata */ |
|
av_log(c->fc, AV_LOG_ERROR, "aclr not decoded - incomplete atom\n"); |
|
} |
|
} else { |
|
av_log(c->fc, AV_LOG_ERROR, "aclr not decoded - unable to add atom to extradata\n"); |
|
} |
|
} else { |
|
av_log(c->fc, AV_LOG_WARNING, "aclr not decoded - unexpected size %"PRId64"\n", atom.size); |
|
} |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3); |
|
} |
|
|
|
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((uint64_t)atom.size > (1<<30)) |
|
return AVERROR_INVALIDDATA; |
|
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_QDM2 || |
|
st->codecpar->codec_id == AV_CODEC_ID_QDMC || |
|
st->codecpar->codec_id == AV_CODEC_ID_SPEEX) { |
|
// pass all frma atom to codec, needed at least for QDMC and QDM2 |
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size); |
|
if (ret < 0) |
|
return ret; |
|
} else if (atom.size > 8) { /* to read frma, esds atoms */ |
|
if (st->codecpar->codec_id == AV_CODEC_ID_ALAC && atom.size >= 24) { |
|
uint64_t buffer; |
|
ret = ffio_ensure_seekback(pb, 8); |
|
if (ret < 0) |
|
return ret; |
|
buffer = avio_rb64(pb); |
|
atom.size -= 8; |
|
if ( (buffer & 0xFFFFFFFF) == MKBETAG('f','r','m','a') |
|
&& buffer >> 32 <= atom.size |
|
&& buffer >> 32 >= 8) { |
|
avio_skip(pb, -8); |
|
atom.size += 8; |
|
} else if (!st->codecpar->extradata_size) { |
|
#define ALAC_EXTRADATA_SIZE 36 |
|
st->codecpar->extradata = av_mallocz(ALAC_EXTRADATA_SIZE + AV_INPUT_BUFFER_PADDING_SIZE); |
|
if (!st->codecpar->extradata) |
|
return AVERROR(ENOMEM); |
|
st->codecpar->extradata_size = ALAC_EXTRADATA_SIZE; |
|
AV_WB32(st->codecpar->extradata , ALAC_EXTRADATA_SIZE); |
|
AV_WB32(st->codecpar->extradata + 4, MKTAG('a','l','a','c')); |
|
AV_WB64(st->codecpar->extradata + 12, buffer); |
|
avio_read(pb, st->codecpar->extradata + 20, 16); |
|
avio_skip(pb, atom.size - 24); |
|
return 0; |
|
} |
|
} |
|
if ((ret = mov_read_default(c, pb, atom)) < 0) |
|
return ret; |
|
} else |
|
avio_skip(pb, atom.size); |
|
return 0; |
|
} |
|
|
|
/** |
|
* This function reads atom content and puts data in extradata without tag |
|
* nor size unlike mov_read_extradata. |
|
*/ |
|
static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((uint64_t)atom.size > (1<<30)) |
|
return AVERROR_INVALIDDATA; |
|
|
|
if (atom.size >= 10) { |
|
// Broken files created by legacy versions of libavformat will |
|
// wrap a whole fiel atom inside of a glbl atom. |
|
unsigned size = avio_rb32(pb); |
|
unsigned type = avio_rl32(pb); |
|
avio_seek(pb, -8, SEEK_CUR); |
|
if (type == MKTAG('f','i','e','l') && size == atom.size) |
|
return mov_read_default(c, pb, atom); |
|
} |
|
if (st->codecpar->extradata_size > 1 && st->codecpar->extradata) { |
|
av_log(c->fc, AV_LOG_WARNING, "ignoring multiple glbl\n"); |
|
return 0; |
|
} |
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size); |
|
if (ret < 0) |
|
return ret; |
|
if (atom.type == MKTAG('h','v','c','C') && st->codecpar->codec_tag == MKTAG('d','v','h','1')) |
|
/* HEVC-based Dolby Vision derived from hvc1. |
|
Happens to match with an identifier |
|
previously utilized for DV. Thus, if we have |
|
the hvcC extradata box available as specified, |
|
set codec to HEVC */ |
|
st->codecpar->codec_id = AV_CODEC_ID_HEVC; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
uint8_t profile_level; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if (atom.size >= (1<<28) || atom.size < 7) |
|
return AVERROR_INVALIDDATA; |
|
|
|
profile_level = avio_r8(pb); |
|
if ((profile_level & 0xf0) != 0xc0) |
|
return 0; |
|
|
|
avio_seek(pb, 6, SEEK_CUR); |
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 7); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself, |
|
* but can have extradata appended at the end after the 40 bytes belonging |
|
* to the struct. |
|
*/ |
|
static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
if (atom.size <= 40) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((uint64_t)atom.size > (1<<30)) |
|
return AVERROR_INVALIDDATA; |
|
|
|
avio_skip(pb, 40); |
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 40); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries; |
|
|
|
if (c->trak_index < 0) { |
|
av_log(c->fc, AV_LOG_WARNING, "STCO outside TRAK\n"); |
|
return 0; |
|
} |
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
entries = avio_rb32(pb); |
|
|
|
if (!entries) |
|
return 0; |
|
|
|
if (sc->chunk_offsets) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n"); |
|
av_free(sc->chunk_offsets); |
|
sc->chunk_count = 0; |
|
sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets)); |
|
if (!sc->chunk_offsets) |
|
return AVERROR(ENOMEM); |
|
sc->chunk_count = entries; |
|
|
|
if (atom.type == MKTAG('s','t','c','o')) |
|
for (i = 0; i < entries && !pb->eof_reached; i++) |
|
sc->chunk_offsets[i] = avio_rb32(pb); |
|
else if (atom.type == MKTAG('c','o','6','4')) |
|
for (i = 0; i < entries && !pb->eof_reached; i++) |
|
sc->chunk_offsets[i] = avio_rb64(pb); |
|
else |
|
return AVERROR_INVALIDDATA; |
|
|
|
sc->chunk_count = i; |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STCO atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_codec_id(AVStream *st, uint32_t format) |
|
{ |
|
int id = ff_codec_get_id(ff_codec_movaudio_tags, format); |
|
|
|
if (id <= 0 && |
|
((format & 0xFFFF) == 'm' + ('s' << 8) || |
|
(format & 0xFFFF) == 'T' + ('S' << 8))) |
|
id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF); |
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) { |
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
|
} else if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO && |
|
/* skip old ASF MPEG-4 tag */ |
|
format && format != MKTAG('m','p','4','s')) { |
|
id = ff_codec_get_id(ff_codec_movvideo_tags, format); |
|
if (id <= 0) |
|
id = ff_codec_get_id(ff_codec_bmp_tags, format); |
|
if (id > 0) |
|
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; |
|
else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || |
|
(st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE && |
|
st->codecpar->codec_id == AV_CODEC_ID_NONE)) { |
|
id = ff_codec_get_id(ff_codec_movsubtitle_tags, format); |
|
if (id > 0) |
|
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; |
|
else |
|
id = ff_codec_get_id(ff_codec_movdata_tags, format); |
|
} |
|
} |
|
|
|
st->codecpar->codec_tag = format; |
|
|
|
return id; |
|
} |
|
|
|
static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb, |
|
AVStream *st, MOVStreamContext *sc) |
|
{ |
|
uint8_t codec_name[32] = { 0 }; |
|
int64_t stsd_start; |
|
unsigned int len; |
|
uint32_t id = 0; |
|
|
|
/* The first 16 bytes of the video sample description are already |
|
* read in ff_mov_read_stsd_entries() */ |
|
stsd_start = avio_tell(pb) - 16; |
|
|
|
avio_rb16(pb); /* version */ |
|
avio_rb16(pb); /* revision level */ |
|
id = avio_rl32(pb); /* vendor */ |
|
av_dict_set(&st->metadata, "vendor_id", av_fourcc2str(id), 0); |
|
avio_rb32(pb); /* temporal quality */ |
|
avio_rb32(pb); /* spatial quality */ |
|
|
|
st->codecpar->width = avio_rb16(pb); /* width */ |
|
st->codecpar->height = avio_rb16(pb); /* height */ |
|
|
|
avio_rb32(pb); /* horiz resolution */ |
|
avio_rb32(pb); /* vert resolution */ |
|
avio_rb32(pb); /* data size, always 0 */ |
|
avio_rb16(pb); /* frames per samples */ |
|
|
|
len = avio_r8(pb); /* codec name, pascal string */ |
|
if (len > 31) |
|
len = 31; |
|
mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name)); |
|
if (len < 31) |
|
avio_skip(pb, 31 - len); |
|
|
|
if (codec_name[0]) |
|
av_dict_set(&st->metadata, "encoder", codec_name, 0); |
|
|
|
/* codec_tag YV12 triggers an UV swap in rawdec.c */ |
|
if (!strncmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) { |
|
st->codecpar->codec_tag = MKTAG('I', '4', '2', '0'); |
|
st->codecpar->width &= ~1; |
|
st->codecpar->height &= ~1; |
|
} |
|
/* Flash Media Server uses tag H.263 with Sorenson Spark */ |
|
if (st->codecpar->codec_tag == MKTAG('H','2','6','3') && |
|
!strncmp(codec_name, "Sorenson H263", 13)) |
|
st->codecpar->codec_id = AV_CODEC_ID_FLV1; |
|
|
|
st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* depth */ |
|
|
|
avio_seek(pb, stsd_start, SEEK_SET); |
|
|
|
if (ff_get_qtpalette(st->codecpar->codec_id, pb, sc->palette)) { |
|
st->codecpar->bits_per_coded_sample &= 0x1F; |
|
sc->has_palette = 1; |
|
} |
|
} |
|
|
|
static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb, |
|
AVStream *st, MOVStreamContext *sc) |
|
{ |
|
int bits_per_sample, flags; |
|
uint16_t version = avio_rb16(pb); |
|
uint32_t id = 0; |
|
AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE); |
|
|
|
avio_rb16(pb); /* revision level */ |
|
id = avio_rl32(pb); /* vendor */ |
|
av_dict_set(&st->metadata, "vendor_id", av_fourcc2str(id), 0); |
|
|
|
st->codecpar->channels = avio_rb16(pb); /* channel count */ |
|
st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* sample size */ |
|
av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codecpar->channels); |
|
|
|
sc->audio_cid = avio_rb16(pb); |
|
avio_rb16(pb); /* packet size = 0 */ |
|
|
|
st->codecpar->sample_rate = ((avio_rb32(pb) >> 16)); |
|
|
|
// Read QT version 1 fields. In version 0 these do not exist. |
|
av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom); |
|
if (!c->isom || |
|
(compatible_brands && strstr(compatible_brands->value, "qt ")) || |
|
(sc->stsd_version == 0 && version > 0)) { |
|
if (version == 1) { |
|
sc->samples_per_frame = avio_rb32(pb); |
|
avio_rb32(pb); /* bytes per packet */ |
|
sc->bytes_per_frame = avio_rb32(pb); |
|
avio_rb32(pb); /* bytes per sample */ |
|
} else if (version == 2) { |
|
avio_rb32(pb); /* sizeof struct only */ |
|
st->codecpar->sample_rate = av_int2double(avio_rb64(pb)); |
|
st->codecpar->channels = avio_rb32(pb); |
|
avio_rb32(pb); /* always 0x7F000000 */ |
|
st->codecpar->bits_per_coded_sample = avio_rb32(pb); |
|
|
|
flags = avio_rb32(pb); /* lpcm format specific flag */ |
|
sc->bytes_per_frame = avio_rb32(pb); |
|
sc->samples_per_frame = avio_rb32(pb); |
|
if (st->codecpar->codec_tag == MKTAG('l','p','c','m')) |
|
st->codecpar->codec_id = |
|
ff_mov_get_lpcm_codec_id(st->codecpar->bits_per_coded_sample, |
|
flags); |
|
} |
|
if (version == 0 || (version == 1 && sc->audio_cid != -2)) { |
|
/* can't correctly handle variable sized packet as audio unit */ |
|
switch (st->codecpar->codec_id) { |
|
case AV_CODEC_ID_MP2: |
|
case AV_CODEC_ID_MP3: |
|
st->need_parsing = AVSTREAM_PARSE_FULL; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
if (sc->format == 0) { |
|
if (st->codecpar->bits_per_coded_sample == 8) |
|
st->codecpar->codec_id = mov_codec_id(st, MKTAG('r','a','w',' ')); |
|
else if (st->codecpar->bits_per_coded_sample == 16) |
|
st->codecpar->codec_id = mov_codec_id(st, MKTAG('t','w','o','s')); |
|
} |
|
|
|
switch (st->codecpar->codec_id) { |
|
case AV_CODEC_ID_PCM_S8: |
|
case AV_CODEC_ID_PCM_U8: |
|
if (st->codecpar->bits_per_coded_sample == 16) |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE; |
|
break; |
|
case AV_CODEC_ID_PCM_S16LE: |
|
case AV_CODEC_ID_PCM_S16BE: |
|
if (st->codecpar->bits_per_coded_sample == 8) |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S8; |
|
else if (st->codecpar->bits_per_coded_sample == 24) |
|
st->codecpar->codec_id = |
|
st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ? |
|
AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE; |
|
else if (st->codecpar->bits_per_coded_sample == 32) |
|
st->codecpar->codec_id = |
|
st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ? |
|
AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE; |
|
break; |
|
/* set values for old format before stsd version 1 appeared */ |
|
case AV_CODEC_ID_MACE3: |
|
sc->samples_per_frame = 6; |
|
sc->bytes_per_frame = 2 * st->codecpar->channels; |
|
break; |
|
case AV_CODEC_ID_MACE6: |
|
sc->samples_per_frame = 6; |
|
sc->bytes_per_frame = 1 * st->codecpar->channels; |
|
break; |
|
case AV_CODEC_ID_ADPCM_IMA_QT: |
|
sc->samples_per_frame = 64; |
|
sc->bytes_per_frame = 34 * st->codecpar->channels; |
|
break; |
|
case AV_CODEC_ID_GSM: |
|
sc->samples_per_frame = 160; |
|
sc->bytes_per_frame = 33; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id); |
|
if (bits_per_sample) { |
|
st->codecpar->bits_per_coded_sample = bits_per_sample; |
|
sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels; |
|
} |
|
} |
|
|
|
static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb, |
|
AVStream *st, MOVStreamContext *sc, |
|
int64_t size) |
|
{ |
|
// ttxt stsd contains display flags, justification, background |
|
// color, fonts, and default styles, so fake an atom to read it |
|
MOVAtom fake_atom = { .size = size }; |
|
// mp4s contains a regular esds atom |
|
if (st->codecpar->codec_tag != AV_RL32("mp4s")) |
|
mov_read_glbl(c, pb, fake_atom); |
|
st->codecpar->width = sc->width; |
|
st->codecpar->height = sc->height; |
|
} |
|
|
|
static uint32_t yuv_to_rgba(uint32_t ycbcr) |
|
{ |
|
uint8_t r, g, b; |
|
int y, cb, cr; |
|
|
|
y = (ycbcr >> 16) & 0xFF; |
|
cr = (ycbcr >> 8) & 0xFF; |
|
cb = ycbcr & 0xFF; |
|
|
|
b = av_clip_uint8((1164 * (y - 16) + 2018 * (cb - 128)) / 1000); |
|
g = av_clip_uint8((1164 * (y - 16) - 813 * (cr - 128) - 391 * (cb - 128)) / 1000); |
|
r = av_clip_uint8((1164 * (y - 16) + 1596 * (cr - 128) ) / 1000); |
|
|
|
return (r << 16) | (g << 8) | b; |
|
} |
|
|
|
static int mov_rewrite_dvd_sub_extradata(AVStream *st) |
|
{ |
|
char buf[256] = {0}; |
|
uint8_t *src = st->codecpar->extradata; |
|
int i, ret; |
|
|
|
if (st->codecpar->extradata_size != 64) |
|
return 0; |
|
|
|
if (st->codecpar->width > 0 && st->codecpar->height > 0) |
|
snprintf(buf, sizeof(buf), "size: %dx%d\n", |
|
st->codecpar->width, st->codecpar->height); |
|
av_strlcat(buf, "palette: ", sizeof(buf)); |
|
|
|
for (i = 0; i < 16; i++) { |
|
uint32_t yuv = AV_RB32(src + i * 4); |
|
uint32_t rgba = yuv_to_rgba(yuv); |
|
|
|
av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : ""); |
|
} |
|
|
|
if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf)) |
|
return 0; |
|
|
|
ret = ff_alloc_extradata(st->codecpar, strlen(buf)); |
|
if (ret < 0) |
|
return ret; |
|
memcpy(st->codecpar->extradata, buf, st->codecpar->extradata_size); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, |
|
AVStream *st, MOVStreamContext *sc, |
|
int64_t size) |
|
{ |
|
int ret; |
|
|
|
if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) { |
|
if ((int)size != size) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, size); |
|
if (ret < 0) |
|
return ret; |
|
if (size > 16) { |
|
MOVStreamContext *tmcd_ctx = st->priv_data; |
|
int val; |
|
val = AV_RB32(st->codecpar->extradata + 4); |
|
tmcd_ctx->tmcd_flags = val; |
|
st->avg_frame_rate.num = AV_RB32(st->codecpar->extradata + 8); /* timescale */ |
|
st->avg_frame_rate.den = AV_RB32(st->codecpar->extradata + 12); /* frameDuration */ |
|
#if FF_API_LAVF_AVCTX |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
st->codec->time_base = av_inv_q(st->avg_frame_rate); |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
/* adjust for per frame dur in counter mode */ |
|
if (tmcd_ctx->tmcd_flags & 0x0008) { |
|
int timescale = AV_RB32(st->codecpar->extradata + 8); |
|
int framedur = AV_RB32(st->codecpar->extradata + 12); |
|
st->avg_frame_rate.num *= timescale; |
|
st->avg_frame_rate.den *= framedur; |
|
#if FF_API_LAVF_AVCTX |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
st->codec->time_base.den *= timescale; |
|
st->codec->time_base.num *= framedur; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
} |
|
if (size > 30) { |
|
uint32_t len = AV_RB32(st->codecpar->extradata + 18); /* name atom length */ |
|
uint32_t format = AV_RB32(st->codecpar->extradata + 22); |
|
if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) { |
|
uint16_t str_size = AV_RB16(st->codecpar->extradata + 26); /* string length */ |
|
if (str_size > 0 && size >= (int)str_size + 30 && |
|
st->codecpar->extradata[30] /* Don't add empty string */) { |
|
char *reel_name = av_malloc(str_size + 1); |
|
if (!reel_name) |
|
return AVERROR(ENOMEM); |
|
memcpy(reel_name, st->codecpar->extradata + 30, str_size); |
|
reel_name[str_size] = 0; /* Add null terminator */ |
|
av_dict_set(&st->metadata, "reel_name", reel_name, |
|
AV_DICT_DONT_STRDUP_VAL); |
|
} |
|
} |
|
} |
|
} |
|
} else { |
|
/* other codec type, just skip (rtp, mp4s ...) */ |
|
avio_skip(pb, size); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb, |
|
AVStream *st, MOVStreamContext *sc) |
|
{ |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && |
|
!st->codecpar->sample_rate && sc->time_scale > 1) |
|
st->codecpar->sample_rate = sc->time_scale; |
|
|
|
/* special codec parameters handling */ |
|
switch (st->codecpar->codec_id) { |
|
#if CONFIG_DV_DEMUXER |
|
case AV_CODEC_ID_DVAUDIO: |
|
c->dv_fctx = avformat_alloc_context(); |
|
if (!c->dv_fctx) { |
|
av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n"); |
|
return AVERROR(ENOMEM); |
|
} |
|
c->dv_demux = avpriv_dv_init_demux(c->dv_fctx); |
|
if (!c->dv_demux) { |
|
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n"); |
|
return AVERROR(ENOMEM); |
|
} |
|
sc->dv_audio_container = 1; |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; |
|
break; |
|
#endif |
|
/* no ifdef since parameters are always those */ |
|
case AV_CODEC_ID_QCELP: |
|
st->codecpar->channels = 1; |
|
// force sample rate for qcelp when not stored in mov |
|
if (st->codecpar->codec_tag != MKTAG('Q','c','l','p')) |
|
st->codecpar->sample_rate = 8000; |
|
// FIXME: Why is the following needed for some files? |
|
sc->samples_per_frame = 160; |
|
if (!sc->bytes_per_frame) |
|
sc->bytes_per_frame = 35; |
|
break; |
|
case AV_CODEC_ID_AMR_NB: |
|
st->codecpar->channels = 1; |
|
/* force sample rate for amr, stsd in 3gp does not store sample rate */ |
|
st->codecpar->sample_rate = 8000; |
|
break; |
|
case AV_CODEC_ID_AMR_WB: |
|
st->codecpar->channels = 1; |
|
st->codecpar->sample_rate = 16000; |
|
break; |
|
case AV_CODEC_ID_MP2: |
|
case AV_CODEC_ID_MP3: |
|
/* force type after stsd for m1a hdlr */ |
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
|
break; |
|
case AV_CODEC_ID_GSM: |
|
case AV_CODEC_ID_ADPCM_MS: |
|
case AV_CODEC_ID_ADPCM_IMA_WAV: |
|
case AV_CODEC_ID_ILBC: |
|
case AV_CODEC_ID_MACE3: |
|
case AV_CODEC_ID_MACE6: |
|
case AV_CODEC_ID_QDM2: |
|
st->codecpar->block_align = sc->bytes_per_frame; |
|
break; |
|
case AV_CODEC_ID_ALAC: |
|
if (st->codecpar->extradata_size == 36) { |
|
st->codecpar->channels = AV_RB8 (st->codecpar->extradata + 21); |
|
st->codecpar->sample_rate = AV_RB32(st->codecpar->extradata + 32); |
|
} |
|
break; |
|
case AV_CODEC_ID_AC3: |
|
case AV_CODEC_ID_EAC3: |
|
case AV_CODEC_ID_MPEG1VIDEO: |
|
case AV_CODEC_ID_VC1: |
|
case AV_CODEC_ID_VP8: |
|
case AV_CODEC_ID_VP9: |
|
st->need_parsing = AVSTREAM_PARSE_FULL; |
|
break; |
|
case AV_CODEC_ID_AV1: |
|
st->need_parsing = AVSTREAM_PARSE_HEADERS; |
|
break; |
|
default: |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb, |
|
int codec_tag, int format, |
|
int64_t size) |
|
{ |
|
int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format); |
|
|
|
if (codec_tag && |
|
(codec_tag != format && |
|
// AVID 1:1 samples with differing data format and codec tag exist |
|
(codec_tag != AV_RL32("AV1x") || format != AV_RL32("AVup")) && |
|
// prores is allowed to have differing data format and codec tag |
|
codec_tag != AV_RL32("apcn") && codec_tag != AV_RL32("apch") && |
|
// so is dv (sigh) |
|
codec_tag != AV_RL32("dvpp") && codec_tag != AV_RL32("dvcp") && |
|
(c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id |
|
: codec_tag != MKTAG('j','p','e','g')))) { |
|
/* Multiple fourcc, we skip JPEG. This is not correct, we should |
|
* export it as a separate AVStream but this needs a few changes |
|
* in the MOV demuxer, patch welcome. */ |
|
|
|
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n"); |
|
avio_skip(pb, size); |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int pseudo_stream_id; |
|
|
|
av_assert0 (c->fc->nb_streams >= 1); |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
for (pseudo_stream_id = 0; |
|
pseudo_stream_id < entries && !pb->eof_reached; |
|
pseudo_stream_id++) { |
|
//Parsing Sample description table |
|
enum AVCodecID id; |
|
int ret, dref_id = 1; |
|
MOVAtom a = { AV_RL32("stsd") }; |
|
int64_t start_pos = avio_tell(pb); |
|
int64_t size = avio_rb32(pb); /* size */ |
|
uint32_t format = avio_rl32(pb); /* data format */ |
|
|
|
if (size >= 16) { |
|
avio_rb32(pb); /* reserved */ |
|
avio_rb16(pb); /* reserved */ |
|
dref_id = avio_rb16(pb); |
|
} else if (size <= 7) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"invalid size %"PRId64" in stsd\n", size); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (mov_skip_multiple_stsd(c, pb, st->codecpar->codec_tag, format, |
|
size - (avio_tell(pb) - start_pos))) { |
|
sc->stsd_count++; |
|
continue; |
|
} |
|
|
|
sc->pseudo_stream_id = st->codecpar->codec_tag ? -1 : pseudo_stream_id; |
|
sc->dref_id= dref_id; |
|
sc->format = format; |
|
|
|
id = mov_codec_id(st, format); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, |
|
"size=%"PRId64" 4CC=%s codec_type=%d\n", size, |
|
av_fourcc2str(format), st->codecpar->codec_type); |
|
|
|
st->codecpar->codec_id = id; |
|
if (st->codecpar->codec_type==AVMEDIA_TYPE_VIDEO) { |
|
mov_parse_stsd_video(c, pb, st, sc); |
|
} else if (st->codecpar->codec_type==AVMEDIA_TYPE_AUDIO) { |
|
mov_parse_stsd_audio(c, pb, st, sc); |
|
if (st->codecpar->sample_rate < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){ |
|
mov_parse_stsd_subtitle(c, pb, st, sc, |
|
size - (avio_tell(pb) - start_pos)); |
|
} else { |
|
ret = mov_parse_stsd_data(c, pb, st, sc, |
|
size - (avio_tell(pb) - start_pos)); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
/* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */ |
|
a.size = size - (avio_tell(pb) - start_pos); |
|
if (a.size > 8) { |
|
if ((ret = mov_read_default(c, pb, a)) < 0) |
|
return ret; |
|
} else if (a.size > 0) |
|
avio_skip(pb, a.size); |
|
|
|
if (sc->extradata && st->codecpar->extradata) { |
|
int extra_size = st->codecpar->extradata_size; |
|
|
|
/* Move the current stream extradata to the stream context one. */ |
|
sc->extradata_size[pseudo_stream_id] = extra_size; |
|
sc->extradata[pseudo_stream_id] = st->codecpar->extradata; |
|
st->codecpar->extradata = NULL; |
|
st->codecpar->extradata_size = 0; |
|
} |
|
sc->stsd_count++; |
|
} |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSD atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int ret, entries; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
sc = st->priv_data; |
|
|
|
sc->stsd_version = avio_r8(pb); |
|
avio_rb24(pb); /* flags */ |
|
entries = avio_rb32(pb); |
|
|
|
/* Each entry contains a size (4 bytes) and format (4 bytes). */ |
|
if (entries <= 0 || entries > atom.size / 8) { |
|
av_log(c->fc, AV_LOG_ERROR, "invalid STSD entries %d\n", entries); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (sc->extradata) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Duplicate stsd found in this track.\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* Prepare space for hosting multiple extradata. */ |
|
sc->extradata = av_mallocz_array(entries, sizeof(*sc->extradata)); |
|
if (!sc->extradata) |
|
return AVERROR(ENOMEM); |
|
|
|
sc->extradata_size = av_mallocz_array(entries, sizeof(*sc->extradata_size)); |
|
if (!sc->extradata_size) { |
|
ret = AVERROR(ENOMEM); |
|
goto fail; |
|
} |
|
|
|
ret = ff_mov_read_stsd_entries(c, pb, entries); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
/* Restore back the primary extradata. */ |
|
av_freep(&st->codecpar->extradata); |
|
st->codecpar->extradata_size = sc->extradata_size[0]; |
|
if (sc->extradata_size[0]) { |
|
st->codecpar->extradata = av_mallocz(sc->extradata_size[0] + AV_INPUT_BUFFER_PADDING_SIZE); |
|
if (!st->codecpar->extradata) |
|
return AVERROR(ENOMEM); |
|
memcpy(st->codecpar->extradata, sc->extradata[0], sc->extradata_size[0]); |
|
} |
|
|
|
return mov_finalize_stsd_codec(c, pb, st, sc); |
|
fail: |
|
if (sc->extradata) { |
|
int j; |
|
for (j = 0; j < sc->stsd_count; j++) |
|
av_freep(&sc->extradata[j]); |
|
} |
|
|
|
av_freep(&sc->extradata); |
|
av_freep(&sc->extradata_size); |
|
return ret; |
|
} |
|
|
|
static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
entries = avio_rb32(pb); |
|
if ((uint64_t)entries * 12 + 4 > atom.size) |
|
return AVERROR_INVALIDDATA; |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "track[%u].stsc.entries = %u\n", c->fc->nb_streams - 1, entries); |
|
|
|
if (!entries) |
|
return 0; |
|
if (sc->stsc_data) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n"); |
|
av_free(sc->stsc_data); |
|
sc->stsc_count = 0; |
|
sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data)); |
|
if (!sc->stsc_data) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
sc->stsc_data[i].first = avio_rb32(pb); |
|
sc->stsc_data[i].count = avio_rb32(pb); |
|
sc->stsc_data[i].id = avio_rb32(pb); |
|
} |
|
|
|
sc->stsc_count = i; |
|
for (i = sc->stsc_count - 1; i < UINT_MAX; i--) { |
|
int64_t first_min = i + 1; |
|
if ((i+1 < sc->stsc_count && sc->stsc_data[i].first >= sc->stsc_data[i+1].first) || |
|
(i > 0 && sc->stsc_data[i].first <= sc->stsc_data[i-1].first) || |
|
sc->stsc_data[i].first < first_min || |
|
sc->stsc_data[i].count < 1 || |
|
sc->stsc_data[i].id < 1) { |
|
av_log(c->fc, AV_LOG_WARNING, "STSC entry %d is invalid (first=%d count=%d id=%d)\n", i, sc->stsc_data[i].first, sc->stsc_data[i].count, sc->stsc_data[i].id); |
|
if (i+1 >= sc->stsc_count) { |
|
if (sc->stsc_data[i].count == 0 && i > 0) { |
|
sc->stsc_count --; |
|
continue; |
|
} |
|
sc->stsc_data[i].first = FFMAX(sc->stsc_data[i].first, first_min); |
|
if (i > 0 && sc->stsc_data[i].first <= sc->stsc_data[i-1].first) |
|
sc->stsc_data[i].first = FFMIN(sc->stsc_data[i-1].first + 1LL, INT_MAX); |
|
sc->stsc_data[i].count = FFMAX(sc->stsc_data[i].count, 1); |
|
sc->stsc_data[i].id = FFMAX(sc->stsc_data[i].id, 1); |
|
continue; |
|
} |
|
av_assert0(sc->stsc_data[i+1].first >= 2); |
|
// We replace this entry by the next valid |
|
sc->stsc_data[i].first = sc->stsc_data[i+1].first - 1; |
|
sc->stsc_data[i].count = sc->stsc_data[i+1].count; |
|
sc->stsc_data[i].id = sc->stsc_data[i+1].id; |
|
} |
|
} |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSC atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static inline int mov_stsc_index_valid(unsigned int index, unsigned int count) |
|
{ |
|
return index < count - 1; |
|
} |
|
|
|
/* Compute the samples value for the stsc entry at the given index. */ |
|
static inline int64_t mov_get_stsc_samples(MOVStreamContext *sc, unsigned int index) |
|
{ |
|
int chunk_count; |
|
|
|
if (mov_stsc_index_valid(index, sc->stsc_count)) |
|
chunk_count = sc->stsc_data[index + 1].first - sc->stsc_data[index].first; |
|
else { |
|
// Validation for stsc / stco happens earlier in mov_read_stsc + mov_read_trak. |
|
av_assert0(sc->stsc_data[index].first <= sc->chunk_count); |
|
chunk_count = sc->chunk_count - (sc->stsc_data[index].first - 1); |
|
} |
|
|
|
return sc->stsc_data[index].count * (int64_t)chunk_count; |
|
} |
|
|
|
static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned i, entries; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_rb32(pb); // version + flags |
|
|
|
entries = avio_rb32(pb); |
|
if (sc->stps_data) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n"); |
|
av_free(sc->stps_data); |
|
sc->stps_count = 0; |
|
sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data)); |
|
if (!sc->stps_data) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
sc->stps_data[i] = avio_rb32(pb); |
|
} |
|
|
|
sc->stps_count = i; |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STPS atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
entries = avio_rb32(pb); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %u\n", entries); |
|
|
|
if (!entries) { |
|
sc->keyframe_absent = 1; |
|
if (!st->need_parsing && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) |
|
st->need_parsing = AVSTREAM_PARSE_HEADERS; |
|
return 0; |
|
} |
|
if (sc->keyframes) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n"); |
|
if (entries >= UINT_MAX / sizeof(int)) |
|
return AVERROR_INVALIDDATA; |
|
av_freep(&sc->keyframes); |
|
sc->keyframe_count = 0; |
|
sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes)); |
|
if (!sc->keyframes) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
sc->keyframes[i] = avio_rb32(pb); |
|
} |
|
|
|
sc->keyframe_count = i; |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSS atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries, sample_size, field_size, num_bytes; |
|
GetBitContext gb; |
|
unsigned char* buf; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
if (atom.type == MKTAG('s','t','s','z')) { |
|
sample_size = avio_rb32(pb); |
|
if (!sc->sample_size) /* do not overwrite value computed in stsd */ |
|
sc->sample_size = sample_size; |
|
sc->stsz_sample_size = sample_size; |
|
field_size = 32; |
|
} else { |
|
sample_size = 0; |
|
avio_rb24(pb); /* reserved */ |
|
field_size = avio_r8(pb); |
|
} |
|
entries = avio_rb32(pb); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "sample_size = %u sample_count = %u\n", sc->sample_size, entries); |
|
|
|
sc->sample_count = entries; |
|
if (sample_size) |
|
return 0; |
|
|
|
if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %u\n", field_size); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (!entries) |
|
return 0; |
|
if (entries >= (UINT_MAX - 4) / field_size) |
|
return AVERROR_INVALIDDATA; |
|
if (sc->sample_sizes) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n"); |
|
av_free(sc->sample_sizes); |
|
sc->sample_count = 0; |
|
sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes)); |
|
if (!sc->sample_sizes) |
|
return AVERROR(ENOMEM); |
|
|
|
num_bytes = (entries*field_size+4)>>3; |
|
|
|
buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE); |
|
if (!buf) { |
|
av_freep(&sc->sample_sizes); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
ret = ffio_read_size(pb, buf, num_bytes); |
|
if (ret < 0) { |
|
av_freep(&sc->sample_sizes); |
|
av_free(buf); |
|
av_log(c->fc, AV_LOG_WARNING, "STSZ atom truncated\n"); |
|
return 0; |
|
} |
|
|
|
init_get_bits(&gb, buf, 8*num_bytes); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
sc->sample_sizes[i] = get_bits_long(&gb, field_size); |
|
if (sc->sample_sizes[i] < 0) { |
|
av_free(buf); |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid sample size %d\n", sc->sample_sizes[i]); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
sc->data_size += sc->sample_sizes[i]; |
|
} |
|
|
|
sc->sample_count = i; |
|
|
|
av_free(buf); |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSZ atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries, alloc_size = 0; |
|
int64_t duration = 0; |
|
int64_t total_sample_count = 0; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
entries = avio_rb32(pb); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "track[%u].stts.entries = %u\n", |
|
c->fc->nb_streams-1, entries); |
|
|
|
if (sc->stts_data) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n"); |
|
av_freep(&sc->stts_data); |
|
sc->stts_count = 0; |
|
if (entries >= INT_MAX / sizeof(*sc->stts_data)) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
int sample_duration; |
|
unsigned int sample_count; |
|
unsigned int min_entries = FFMIN(FFMAX(i + 1, 1024 * 1024), entries); |
|
MOVStts *stts_data = av_fast_realloc(sc->stts_data, &alloc_size, |
|
min_entries * sizeof(*sc->stts_data)); |
|
if (!stts_data) { |
|
av_freep(&sc->stts_data); |
|
sc->stts_count = 0; |
|
return AVERROR(ENOMEM); |
|
} |
|
sc->stts_count = min_entries; |
|
sc->stts_data = stts_data; |
|
|
|
sample_count = avio_rb32(pb); |
|
sample_duration = avio_rb32(pb); |
|
|
|
sc->stts_data[i].count= sample_count; |
|
sc->stts_data[i].duration= sample_duration; |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n", |
|
sample_count, sample_duration); |
|
|
|
duration+=(int64_t)sample_duration*(uint64_t)sample_count; |
|
total_sample_count+=sample_count; |
|
} |
|
|
|
sc->stts_count = i; |
|
|
|
if (duration > 0 && |
|
duration <= INT64_MAX - sc->duration_for_fps && |
|
total_sample_count <= INT_MAX - sc->nb_frames_for_fps) { |
|
sc->duration_for_fps += duration; |
|
sc->nb_frames_for_fps += total_sample_count; |
|
} |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STTS atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
st->nb_frames= total_sample_count; |
|
if (duration) |
|
st->duration= FFMIN(st->duration, duration); |
|
sc->track_end = duration; |
|
return 0; |
|
} |
|
|
|
static int mov_read_sdtp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int64_t i, entries; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
entries = atom.size - 4; |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "track[%u].sdtp.entries = %" PRId64 "\n", |
|
c->fc->nb_streams - 1, entries); |
|
|
|
if (sc->sdtp_data) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated SDTP atom\n"); |
|
av_freep(&sc->sdtp_data); |
|
sc->sdtp_count = 0; |
|
|
|
sc->sdtp_data = av_mallocz(entries); |
|
if (!sc->sdtp_data) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) |
|
sc->sdtp_data[i] = avio_r8(pb); |
|
sc->sdtp_count = i; |
|
|
|
return 0; |
|
} |
|
|
|
static void mov_update_dts_shift(MOVStreamContext *sc, int duration, void *logctx) |
|
{ |
|
if (duration < 0) { |
|
if (duration == INT_MIN) { |
|
av_log(logctx, AV_LOG_WARNING, "mov_update_dts_shift(): dts_shift set to %d\n", INT_MAX); |
|
duration++; |
|
} |
|
sc->dts_shift = FFMAX(sc->dts_shift, -duration); |
|
} |
|
} |
|
|
|
static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries, ctts_count = 0; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
entries = avio_rb32(pb); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "track[%u].ctts.entries = %u\n", c->fc->nb_streams - 1, entries); |
|
|
|
if (!entries) |
|
return 0; |
|
if (entries >= UINT_MAX / sizeof(*sc->ctts_data)) |
|
return AVERROR_INVALIDDATA; |
|
av_freep(&sc->ctts_data); |
|
sc->ctts_data = av_fast_realloc(NULL, &sc->ctts_allocated_size, entries * sizeof(*sc->ctts_data)); |
|
if (!sc->ctts_data) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
int count = avio_rb32(pb); |
|
int duration = avio_rb32(pb); |
|
|
|
if (count <= 0) { |
|
av_log(c->fc, AV_LOG_TRACE, |
|
"ignoring CTTS entry with count=%d duration=%d\n", |
|
count, duration); |
|
continue; |
|
} |
|
|
|
add_ctts_entry(&sc->ctts_data, &ctts_count, &sc->ctts_allocated_size, |
|
count, duration); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "count=%d, duration=%d\n", |
|
count, duration); |
|
|
|
if (FFNABS(duration) < -(1<<28) && i+2<entries) { |
|
av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n"); |
|
av_freep(&sc->ctts_data); |
|
sc->ctts_count = 0; |
|
return 0; |
|
} |
|
|
|
if (i+2<entries) |
|
mov_update_dts_shift(sc, duration, c->fc); |
|
} |
|
|
|
sc->ctts_count = ctts_count; |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted CTTS atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int i, entries; |
|
uint8_t version; |
|
uint32_t grouping_type; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
version = avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
grouping_type = avio_rl32(pb); |
|
if (grouping_type != MKTAG( 'r','a','p',' ')) |
|
return 0; /* only support 'rap ' grouping */ |
|
if (version == 1) |
|
avio_rb32(pb); /* grouping_type_parameter */ |
|
|
|
entries = avio_rb32(pb); |
|
if (!entries) |
|
return 0; |
|
if (sc->rap_group) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n"); |
|
av_free(sc->rap_group); |
|
sc->rap_group_count = 0; |
|
sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group)); |
|
if (!sc->rap_group) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
sc->rap_group[i].count = avio_rb32(pb); /* sample_count */ |
|
sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */ |
|
} |
|
|
|
sc->rap_group_count = i; |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted SBGP atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Get ith edit list entry (media time, duration). |
|
*/ |
|
static int get_edit_list_entry(MOVContext *mov, |
|
const MOVStreamContext *msc, |
|
unsigned int edit_list_index, |
|
int64_t *edit_list_media_time, |
|
int64_t *edit_list_duration, |
|
int64_t global_timescale) |
|
{ |
|
if (edit_list_index == msc->elst_count) { |
|
return 0; |
|
} |
|
*edit_list_media_time = msc->elst_data[edit_list_index].time; |
|
*edit_list_duration = msc->elst_data[edit_list_index].duration; |
|
|
|
/* duration is in global timescale units;convert to msc timescale */ |
|
if (global_timescale == 0) { |
|
avpriv_request_sample(mov->fc, "Support for mvhd.timescale = 0 with editlists"); |
|
return 0; |
|
} |
|
*edit_list_duration = av_rescale(*edit_list_duration, msc->time_scale, |
|
global_timescale); |
|
return 1; |
|
} |
|
|
|
/** |
|
* Find the closest previous frame to the timestamp_pts, in e_old index |
|
* entries. Searching for just any frame / just key frames can be controlled by |
|
* last argument 'flag'. |
|
* Note that if ctts_data is not NULL, we will always search for a key frame |
|
* irrespective of the value of 'flag'. If we don't find any keyframe, we will |
|
* return the first frame of the video. |
|
* |
|
* Here the timestamp_pts is considered to be a presentation timestamp and |
|
* the timestamp of index entries are considered to be decoding timestamps. |
|
* |
|
* Returns 0 if successful in finding a frame, else returns -1. |
|
* Places the found index corresponding output arg. |
|
* |
|
* If ctts_old is not NULL, then refines the searched entry by searching |
|
* backwards from the found timestamp, to find the frame with correct PTS. |
|
* |
|
* Places the found ctts_index and ctts_sample in corresponding output args. |
|
*/ |
|
static int find_prev_closest_index(AVStream *st, |
|
AVIndexEntry *e_old, |
|
int nb_old, |
|
MOVStts* ctts_data, |
|
int64_t ctts_count, |
|
int64_t timestamp_pts, |
|
int flag, |
|
int64_t* index, |
|
int64_t* ctts_index, |
|
int64_t* ctts_sample) |
|
{ |
|
MOVStreamContext *msc = st->priv_data; |
|
AVIndexEntry *e_keep = st->internal->index_entries; |
|
int nb_keep = st->internal->nb_index_entries; |
|
int64_t i = 0; |
|
int64_t index_ctts_count; |
|
|
|
av_assert0(index); |
|
|
|
// If dts_shift > 0, then all the index timestamps will have to be offset by |
|
// at least dts_shift amount to obtain PTS. |
|
// Hence we decrement the searched timestamp_pts by dts_shift to find the closest index element. |
|
if (msc->dts_shift > 0) { |
|
timestamp_pts -= msc->dts_shift; |
|
} |
|
|
|
st->internal->index_entries = e_old; |
|
st->internal->nb_index_entries = nb_old; |
|
*index = av_index_search_timestamp(st, timestamp_pts, flag | AVSEEK_FLAG_BACKWARD); |
|
|
|
// Keep going backwards in the index entries until the timestamp is the same. |
|
if (*index >= 0) { |
|
for (i = *index; i > 0 && e_old[i].timestamp == e_old[i - 1].timestamp; |
|
i--) { |
|
if ((flag & AVSEEK_FLAG_ANY) || |
|
(e_old[i - 1].flags & AVINDEX_KEYFRAME)) { |
|
*index = i - 1; |
|
} |
|
} |
|
} |
|
|
|
// If we have CTTS then refine the search, by searching backwards over PTS |
|
// computed by adding corresponding CTTS durations to index timestamps. |
|
if (ctts_data && *index >= 0) { |
|
av_assert0(ctts_index); |
|
av_assert0(ctts_sample); |
|
// Find out the ctts_index for the found frame. |
|
*ctts_index = 0; |
|
*ctts_sample = 0; |
|
for (index_ctts_count = 0; index_ctts_count < *index; index_ctts_count++) { |
|
if (*ctts_index < ctts_count) { |
|
(*ctts_sample)++; |
|
if (ctts_data[*ctts_index].count == *ctts_sample) { |
|
(*ctts_index)++; |
|
*ctts_sample = 0; |
|
} |
|
} |
|
} |
|
|
|
while (*index >= 0 && (*ctts_index) >= 0 && (*ctts_index) < ctts_count) { |
|
// Find a "key frame" with PTS <= timestamp_pts (So that we can decode B-frames correctly). |
|
// No need to add dts_shift to the timestamp here becase timestamp_pts has already been |
|
// compensated by dts_shift above. |
|
if ((e_old[*index].timestamp + ctts_data[*ctts_index].duration) <= timestamp_pts && |
|
(e_old[*index].flags & AVINDEX_KEYFRAME)) { |
|
break; |
|
} |
|
|
|
(*index)--; |
|
if (*ctts_sample == 0) { |
|
(*ctts_index)--; |
|
if (*ctts_index >= 0) |
|
*ctts_sample = ctts_data[*ctts_index].count - 1; |
|
} else { |
|
(*ctts_sample)--; |
|
} |
|
} |
|
} |
|
|
|
/* restore AVStream state*/ |
|
st->internal->index_entries = e_keep; |
|
st->internal->nb_index_entries = nb_keep; |
|
return *index >= 0 ? 0 : -1; |
|
} |
|
|
|
/** |
|
* Add index entry with the given values, to the end of st->internal->index_entries. |
|
* Returns the new size st->internal->index_entries if successful, else returns -1. |
|
* |
|
* This function is similar to ff_add_index_entry in libavformat/utils.c |
|
* except that here we are always unconditionally adding an index entry to |
|
* the end, instead of searching the entries list and skipping the add if |
|
* there is an existing entry with the same timestamp. |
|
* This is needed because the mov_fix_index calls this func with the same |
|
* unincremented timestamp for successive discarded frames. |
|
*/ |
|
static int64_t add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, |
|
int size, int distance, int flags) |
|
{ |
|
AVIndexEntry *entries, *ie; |
|
int64_t index = -1; |
|
const size_t min_size_needed = (st->internal->nb_index_entries + 1) * sizeof(AVIndexEntry); |
|
|
|
// Double the allocation each time, to lower memory fragmentation. |
|
// Another difference from ff_add_index_entry function. |
|
const size_t requested_size = |
|
min_size_needed > st->internal->index_entries_allocated_size ? |
|
FFMAX(min_size_needed, 2 * st->internal->index_entries_allocated_size) : |
|
min_size_needed; |
|
|
|
if (st->internal->nb_index_entries + 1U >= UINT_MAX / sizeof(AVIndexEntry)) |
|
return -1; |
|
|
|
entries = av_fast_realloc(st->internal->index_entries, |
|
&st->internal->index_entries_allocated_size, |
|
requested_size); |
|
if (!entries) |
|
return -1; |
|
|
|
st->internal->index_entries= entries; |
|
|
|
index= st->internal->nb_index_entries++; |
|
ie= &entries[index]; |
|
|
|
ie->pos = pos; |
|
ie->timestamp = timestamp; |
|
ie->min_distance= distance; |
|
ie->size= size; |
|
ie->flags = flags; |
|
return index; |
|
} |
|
|
|
/** |
|
* Rewrite timestamps of index entries in the range [end_index - frame_duration_buffer_size, end_index) |
|
* by subtracting end_ts successively by the amounts given in frame_duration_buffer. |
|
*/ |
|
static void fix_index_entry_timestamps(AVStream* st, int end_index, int64_t end_ts, |
|
int64_t* frame_duration_buffer, |
|
int frame_duration_buffer_size) { |
|
int i = 0; |
|
av_assert0(end_index >= 0 && end_index <= st->internal->nb_index_entries); |
|
for (i = 0; i < frame_duration_buffer_size; i++) { |
|
end_ts -= frame_duration_buffer[frame_duration_buffer_size - 1 - i]; |
|
st->internal->index_entries[end_index - 1 - i].timestamp = end_ts; |
|
} |
|
} |
|
|
|
/** |
|
* Append a new ctts entry to ctts_data. |
|
* Returns the new ctts_count if successful, else returns -1. |
|
*/ |
|
static int64_t add_ctts_entry(MOVStts** ctts_data, unsigned int* ctts_count, unsigned int* allocated_size, |
|
int count, int duration) |
|
{ |
|
MOVStts *ctts_buf_new; |
|
const size_t min_size_needed = (*ctts_count + 1) * sizeof(MOVStts); |
|
const size_t requested_size = |
|
min_size_needed > *allocated_size ? |
|
FFMAX(min_size_needed, 2 * (*allocated_size)) : |
|
min_size_needed; |
|
|
|
if ((unsigned)(*ctts_count) >= UINT_MAX / sizeof(MOVStts) - 1) |
|
return -1; |
|
|
|
ctts_buf_new = av_fast_realloc(*ctts_data, allocated_size, requested_size); |
|
|
|
if (!ctts_buf_new) |
|
return -1; |
|
|
|
*ctts_data = ctts_buf_new; |
|
|
|
ctts_buf_new[*ctts_count].count = count; |
|
ctts_buf_new[*ctts_count].duration = duration; |
|
|
|
*ctts_count = (*ctts_count) + 1; |
|
return *ctts_count; |
|
} |
|
|
|
#define MAX_REORDER_DELAY 16 |
|
static void mov_estimate_video_delay(MOVContext *c, AVStream* st) |
|
{ |
|
MOVStreamContext *msc = st->priv_data; |
|
int ind; |
|
int ctts_ind = 0; |
|
int ctts_sample = 0; |
|
int64_t pts_buf[MAX_REORDER_DELAY + 1]; // Circular buffer to sort pts. |
|
int buf_start = 0; |
|
int j, r, num_swaps; |
|
|
|
for (j = 0; j < MAX_REORDER_DELAY + 1; j++) |
|
pts_buf[j] = INT64_MIN; |
|
|
|
if (st->codecpar->video_delay <= 0 && msc->ctts_data && |
|
st->codecpar->codec_id == AV_CODEC_ID_H264) { |
|
st->codecpar->video_delay = 0; |
|
for (ind = 0; ind < st->internal->nb_index_entries && ctts_ind < msc->ctts_count; ++ind) { |
|
// Point j to the last elem of the buffer and insert the current pts there. |
|
j = buf_start; |
|
buf_start = (buf_start + 1); |
|
if (buf_start == MAX_REORDER_DELAY + 1) |
|
buf_start = 0; |
|
|
|
pts_buf[j] = st->internal->index_entries[ind].timestamp + msc->ctts_data[ctts_ind].duration; |
|
|
|
// The timestamps that are already in the sorted buffer, and are greater than the |
|
// current pts, are exactly the timestamps that need to be buffered to output PTS |
|
// in correct sorted order. |
|
// Hence the video delay (which is the buffer size used to sort DTS and output PTS), |
|
// can be computed as the maximum no. of swaps any particular timestamp needs to |
|
// go through, to keep this buffer in sorted order. |
|
num_swaps = 0; |
|
while (j != buf_start) { |
|
r = j - 1; |
|
if (r < 0) r = MAX_REORDER_DELAY; |
|
if (pts_buf[j] < pts_buf[r]) { |
|
FFSWAP(int64_t, pts_buf[j], pts_buf[r]); |
|
++num_swaps; |
|
} else { |
|
break; |
|
} |
|
j = r; |
|
} |
|
st->codecpar->video_delay = FFMAX(st->codecpar->video_delay, num_swaps); |
|
|
|
ctts_sample++; |
|
if (ctts_sample == msc->ctts_data[ctts_ind].count) { |
|
ctts_ind++; |
|
ctts_sample = 0; |
|
} |
|
} |
|
av_log(c->fc, AV_LOG_DEBUG, "Setting codecpar->delay to %d for stream st: %d\n", |
|
st->codecpar->video_delay, st->index); |
|
} |
|
} |
|
|
|
static void mov_current_sample_inc(MOVStreamContext *sc) |
|
{ |
|
sc->current_sample++; |
|
sc->current_index++; |
|
if (sc->index_ranges && |
|
sc->current_index >= sc->current_index_range->end && |
|
sc->current_index_range->end) { |
|
sc->current_index_range++; |
|
sc->current_index = sc->current_index_range->start; |
|
} |
|
} |
|
|
|
static void mov_current_sample_dec(MOVStreamContext *sc) |
|
{ |
|
sc->current_sample--; |
|
sc->current_index--; |
|
if (sc->index_ranges && |
|
sc->current_index < sc->current_index_range->start && |
|
sc->current_index_range > sc->index_ranges) { |
|
sc->current_index_range--; |
|
sc->current_index = sc->current_index_range->end - 1; |
|
} |
|
} |
|
|
|
static void mov_current_sample_set(MOVStreamContext *sc, int current_sample) |
|
{ |
|
int64_t range_size; |
|
|
|
sc->current_sample = current_sample; |
|
sc->current_index = current_sample; |
|
if (!sc->index_ranges) { |
|
return; |
|
} |
|
|
|
for (sc->current_index_range = sc->index_ranges; |
|
sc->current_index_range->end; |
|
sc->current_index_range++) { |
|
range_size = sc->current_index_range->end - sc->current_index_range->start; |
|
if (range_size > current_sample) { |
|
sc->current_index = sc->current_index_range->start + current_sample; |
|
break; |
|
} |
|
current_sample -= range_size; |
|
} |
|
} |
|
|
|
/** |
|
* Fix st->internal->index_entries, so that it contains only the entries (and the entries |
|
* which are needed to decode them) that fall in the edit list time ranges. |
|
* Also fixes the timestamps of the index entries to match the timeline |
|
* specified the edit lists. |
|
*/ |
|
static void mov_fix_index(MOVContext *mov, AVStream *st) |
|
{ |
|
MOVStreamContext *msc = st->priv_data; |
|
AVIndexEntry *e_old = st->internal->index_entries; |
|
int nb_old = st->internal->nb_index_entries; |
|
const AVIndexEntry *e_old_end = e_old + nb_old; |
|
const AVIndexEntry *current = NULL; |
|
MOVStts *ctts_data_old = msc->ctts_data; |
|
int64_t ctts_index_old = 0; |
|
int64_t ctts_sample_old = 0; |
|
int64_t ctts_count_old = msc->ctts_count; |
|
int64_t edit_list_media_time = 0; |
|
int64_t edit_list_duration = 0; |
|
int64_t frame_duration = 0; |
|
int64_t edit_list_dts_counter = 0; |
|
int64_t edit_list_dts_entry_end = 0; |
|
int64_t edit_list_start_ctts_sample = 0; |
|
int64_t curr_cts; |
|
int64_t curr_ctts = 0; |
|
int64_t empty_edits_sum_duration = 0; |
|
int64_t edit_list_index = 0; |
|
int64_t index; |
|
int flags; |
|
int64_t start_dts = 0; |
|
int64_t edit_list_start_encountered = 0; |
|
int64_t search_timestamp = 0; |
|
int64_t* frame_duration_buffer = NULL; |
|
int num_discarded_begin = 0; |
|
int first_non_zero_audio_edit = -1; |
|
int packet_skip_samples = 0; |
|
MOVIndexRange *current_index_range; |
|
int i; |
|
int found_keyframe_after_edit = 0; |
|
int found_non_empty_edit = 0; |
|
|
|
if (!msc->elst_data || msc->elst_count <= 0 || nb_old <= 0) { |
|
return; |
|
} |
|
|
|
// allocate the index ranges array |
|
msc->index_ranges = av_malloc((msc->elst_count + 1) * sizeof(msc->index_ranges[0])); |
|
if (!msc->index_ranges) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot allocate index ranges buffer\n"); |
|
return; |
|
} |
|
msc->current_index_range = msc->index_ranges; |
|
current_index_range = msc->index_ranges - 1; |
|
|
|
// Clean AVStream from traces of old index |
|
st->internal->index_entries = NULL; |
|
st->internal->index_entries_allocated_size = 0; |
|
st->internal->nb_index_entries = 0; |
|
|
|
// Clean ctts fields of MOVStreamContext |
|
msc->ctts_data = NULL; |
|
msc->ctts_count = 0; |
|
msc->ctts_index = 0; |
|
msc->ctts_sample = 0; |
|
msc->ctts_allocated_size = 0; |
|
|
|
// Reinitialize min_corrected_pts so that it can be computed again. |
|
msc->min_corrected_pts = -1; |
|
|
|
// If the dts_shift is positive (in case of negative ctts values in mov), |
|
// then negate the DTS by dts_shift |
|
if (msc->dts_shift > 0) { |
|
edit_list_dts_entry_end -= msc->dts_shift; |
|
av_log(mov->fc, AV_LOG_DEBUG, "Shifting DTS by %d because of negative CTTS.\n", msc->dts_shift); |
|
} |
|
|
|
start_dts = edit_list_dts_entry_end; |
|
|
|
while (get_edit_list_entry(mov, msc, edit_list_index, &edit_list_media_time, |
|
&edit_list_duration, mov->time_scale)) { |
|
av_log(mov->fc, AV_LOG_DEBUG, "Processing st: %d, edit list %"PRId64" - media time: %"PRId64", duration: %"PRId64"\n", |
|
st->index, edit_list_index, edit_list_media_time, edit_list_duration); |
|
edit_list_index++; |
|
edit_list_dts_counter = edit_list_dts_entry_end; |
|
edit_list_dts_entry_end += edit_list_duration; |
|
num_discarded_begin = 0; |
|
if (!found_non_empty_edit && edit_list_media_time == -1) { |
|
empty_edits_sum_duration += edit_list_duration; |
|
continue; |
|
} |
|
found_non_empty_edit = 1; |
|
|
|
// If we encounter a non-negative edit list reset the skip_samples/start_pad fields and set them |
|
// according to the edit list below. |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { |
|
if (first_non_zero_audio_edit < 0) { |
|
first_non_zero_audio_edit = 1; |
|
} else { |
|
first_non_zero_audio_edit = 0; |
|
} |
|
|
|
if (first_non_zero_audio_edit > 0) |
|
st->internal->skip_samples = msc->start_pad = 0; |
|
} |
|
|
|
// While reordering frame index according to edit list we must handle properly |
|
// the scenario when edit list entry starts from none key frame. |
|
// We find closest previous key frame and preserve it and consequent frames in index. |
|
// All frames which are outside edit list entry time boundaries will be dropped after decoding. |
|
search_timestamp = edit_list_media_time; |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { |
|
// Audio decoders like AAC need need a decoder delay samples previous to the current sample, |
|
// to correctly decode this frame. Hence for audio we seek to a frame 1 sec. before the |
|
// edit_list_media_time to cover the decoder delay. |
|
search_timestamp = FFMAX(search_timestamp - msc->time_scale, e_old[0].timestamp); |
|
} |
|
|
|
if (find_prev_closest_index(st, e_old, nb_old, ctts_data_old, ctts_count_old, search_timestamp, 0, |
|
&index, &ctts_index_old, &ctts_sample_old) < 0) { |
|
av_log(mov->fc, AV_LOG_WARNING, |
|
"st: %d edit list: %"PRId64" Missing key frame while searching for timestamp: %"PRId64"\n", |
|
st->index, edit_list_index, search_timestamp); |
|
if (find_prev_closest_index(st, e_old, nb_old, ctts_data_old, ctts_count_old, search_timestamp, AVSEEK_FLAG_ANY, |
|
&index, &ctts_index_old, &ctts_sample_old) < 0) { |
|
av_log(mov->fc, AV_LOG_WARNING, |
|
"st: %d edit list %"PRId64" Cannot find an index entry before timestamp: %"PRId64".\n", |
|
st->index, edit_list_index, search_timestamp); |
|
index = 0; |
|
ctts_index_old = 0; |
|
ctts_sample_old = 0; |
|
} |
|
} |
|
current = e_old + index; |
|
edit_list_start_ctts_sample = ctts_sample_old; |
|
|
|
// Iterate over index and arrange it according to edit list |
|
edit_list_start_encountered = 0; |
|
found_keyframe_after_edit = 0; |
|
for (; current < e_old_end; current++, index++) { |
|
// check if frame outside edit list mark it for discard |
|
frame_duration = (current + 1 < e_old_end) ? |
|
((current + 1)->timestamp - current->timestamp) : edit_list_duration; |
|
|
|
flags = current->flags; |
|
|
|
// frames (pts) before or after edit list |
|
curr_cts = current->timestamp + msc->dts_shift; |
|
curr_ctts = 0; |
|
|
|
if (ctts_data_old && ctts_index_old < ctts_count_old) { |
|
curr_ctts = ctts_data_old[ctts_index_old].duration; |
|
av_log(mov->fc, AV_LOG_DEBUG, "stts: %"PRId64" ctts: %"PRId64", ctts_index: %"PRId64", ctts_count: %"PRId64"\n", |
|
curr_cts, curr_ctts, ctts_index_old, ctts_count_old); |
|
curr_cts += curr_ctts; |
|
ctts_sample_old++; |
|
if (ctts_sample_old == ctts_data_old[ctts_index_old].count) { |
|
if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count, |
|
&msc->ctts_allocated_size, |
|
ctts_data_old[ctts_index_old].count - edit_list_start_ctts_sample, |
|
ctts_data_old[ctts_index_old].duration) == -1) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n", |
|
ctts_index_old, |
|
ctts_data_old[ctts_index_old].count - edit_list_start_ctts_sample, |
|
ctts_data_old[ctts_index_old].duration); |
|
break; |
|
} |
|
ctts_index_old++; |
|
ctts_sample_old = 0; |
|
edit_list_start_ctts_sample = 0; |
|
} |
|
} |
|
|
|
if (curr_cts < edit_list_media_time || curr_cts >= (edit_list_duration + edit_list_media_time)) { |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->codec_id != AV_CODEC_ID_VORBIS && |
|
curr_cts < edit_list_media_time && curr_cts + frame_duration > edit_list_media_time && |
|
first_non_zero_audio_edit > 0) { |
|
packet_skip_samples = edit_list_media_time - curr_cts; |
|
st->internal->skip_samples += packet_skip_samples; |
|
|
|
// Shift the index entry timestamp by packet_skip_samples to be correct. |
|
edit_list_dts_counter -= packet_skip_samples; |
|
if (edit_list_start_encountered == 0) { |
|
edit_list_start_encountered = 1; |
|
// Make timestamps strictly monotonically increasing for audio, by rewriting timestamps for |
|
// discarded packets. |
|
if (frame_duration_buffer) { |
|
fix_index_entry_timestamps(st, st->internal->nb_index_entries, edit_list_dts_counter, |
|
frame_duration_buffer, num_discarded_begin); |
|
av_freep(&frame_duration_buffer); |
|
} |
|
} |
|
|
|
av_log(mov->fc, AV_LOG_DEBUG, "skip %d audio samples from curr_cts: %"PRId64"\n", packet_skip_samples, curr_cts); |
|
} else { |
|
flags |= AVINDEX_DISCARD_FRAME; |
|
av_log(mov->fc, AV_LOG_DEBUG, "drop a frame at curr_cts: %"PRId64" @ %"PRId64"\n", curr_cts, index); |
|
|
|
if (edit_list_start_encountered == 0) { |
|
num_discarded_begin++; |
|
frame_duration_buffer = av_realloc(frame_duration_buffer, |
|
num_discarded_begin * sizeof(int64_t)); |
|
if (!frame_duration_buffer) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot reallocate frame duration buffer\n"); |
|
break; |
|
} |
|
frame_duration_buffer[num_discarded_begin - 1] = frame_duration; |
|
|
|
// Increment skip_samples for the first non-zero audio edit list |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && |
|
first_non_zero_audio_edit > 0 && st->codecpar->codec_id != AV_CODEC_ID_VORBIS) { |
|
st->internal->skip_samples += frame_duration; |
|
} |
|
} |
|
} |
|
} else { |
|
if (msc->min_corrected_pts < 0) { |
|
msc->min_corrected_pts = edit_list_dts_counter + curr_ctts + msc->dts_shift; |
|
} else { |
|
msc->min_corrected_pts = FFMIN(msc->min_corrected_pts, edit_list_dts_counter + curr_ctts + msc->dts_shift); |
|
} |
|
if (edit_list_start_encountered == 0) { |
|
edit_list_start_encountered = 1; |
|
// Make timestamps strictly monotonically increasing by rewriting timestamps for |
|
// discarded packets. |
|
if (frame_duration_buffer) { |
|
fix_index_entry_timestamps(st, st->internal->nb_index_entries, edit_list_dts_counter, |
|
frame_duration_buffer, num_discarded_begin); |
|
av_freep(&frame_duration_buffer); |
|
} |
|
} |
|
} |
|
|
|
if (add_index_entry(st, current->pos, edit_list_dts_counter, current->size, |
|
current->min_distance, flags) == -1) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot add index entry\n"); |
|
break; |
|
} |
|
|
|
// Update the index ranges array |
|
if (current_index_range < msc->index_ranges || index != current_index_range->end) { |
|
current_index_range++; |
|
current_index_range->start = index; |
|
} |
|
current_index_range->end = index + 1; |
|
|
|
// Only start incrementing DTS in frame_duration amounts, when we encounter a frame in edit list. |
|
if (edit_list_start_encountered > 0) { |
|
edit_list_dts_counter = edit_list_dts_counter + frame_duration; |
|
} |
|
|
|
// Break when found first key frame after edit entry completion |
|
if ((curr_cts + frame_duration >= (edit_list_duration + edit_list_media_time)) && |
|
((flags & AVINDEX_KEYFRAME) || ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)))) { |
|
if (ctts_data_old) { |
|
// If we have CTTS and this is the first keyframe after edit elist, |
|
// wait for one more, because there might be trailing B-frames after this I-frame |
|
// that do belong to the edit. |
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO && found_keyframe_after_edit == 0) { |
|
found_keyframe_after_edit = 1; |
|
continue; |
|
} |
|
if (ctts_sample_old != 0) { |
|
if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count, |
|
&msc->ctts_allocated_size, |
|
ctts_sample_old - edit_list_start_ctts_sample, |
|
ctts_data_old[ctts_index_old].duration) == -1) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n", |
|
ctts_index_old, ctts_sample_old - edit_list_start_ctts_sample, |
|
ctts_data_old[ctts_index_old].duration); |
|
break; |
|
} |
|
} |
|
} |
|
break; |
|
} |
|
} |
|
} |
|
// If there are empty edits, then msc->min_corrected_pts might be positive |
|
// intentionally. So we subtract the sum duration of emtpy edits here. |
|
msc->min_corrected_pts -= empty_edits_sum_duration; |
|
|
|
// If the minimum pts turns out to be greater than zero after fixing the index, then we subtract the |
|
// dts by that amount to make the first pts zero. |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
if (msc->min_corrected_pts > 0) { |
|
av_log(mov->fc, AV_LOG_DEBUG, "Offset DTS by %"PRId64" to make first pts zero.\n", msc->min_corrected_pts); |
|
for (i = 0; i < st->internal->nb_index_entries; ++i) { |
|
st->internal->index_entries[i].timestamp -= msc->min_corrected_pts; |
|
} |
|
} |
|
} |
|
// Start time should be equal to zero or the duration of any empty edits. |
|
st->start_time = empty_edits_sum_duration; |
|
|
|
// Update av stream length, if it ends up shorter than the track's media duration |
|
st->duration = FFMIN(st->duration, edit_list_dts_entry_end - start_dts); |
|
msc->start_pad = st->internal->skip_samples; |
|
|
|
// Free the old index and the old CTTS structures |
|
av_free(e_old); |
|
av_free(ctts_data_old); |
|
av_freep(&frame_duration_buffer); |
|
|
|
// Null terminate the index ranges array |
|
current_index_range++; |
|
current_index_range->start = 0; |
|
current_index_range->end = 0; |
|
msc->current_index = msc->index_ranges[0].start; |
|
} |
|
|
|
static void mov_build_index(MOVContext *mov, AVStream *st) |
|
{ |
|
MOVStreamContext *sc = st->priv_data; |
|
int64_t current_offset; |
|
int64_t current_dts = 0; |
|
unsigned int stts_index = 0; |
|
unsigned int stsc_index = 0; |
|
unsigned int stss_index = 0; |
|
unsigned int stps_index = 0; |
|
unsigned int i, j; |
|
uint64_t stream_size = 0; |
|
MOVStts *ctts_data_old = sc->ctts_data; |
|
unsigned int ctts_count_old = sc->ctts_count; |
|
|
|
if (sc->elst_count) { |
|
int i, edit_start_index = 0, multiple_edits = 0; |
|
int64_t empty_duration = 0; // empty duration of the first edit list entry |
|
int64_t start_time = 0; // start time of the media |
|
|
|
for (i = 0; i < sc->elst_count; i++) { |
|
const MOVElst *e = &sc->elst_data[i]; |
|
if (i == 0 && e->time == -1) { |
|
/* if empty, the first entry is the start time of the stream |
|
* relative to the presentation itself */ |
|
empty_duration = e->duration; |
|
edit_start_index = 1; |
|
} else if (i == edit_start_index && e->time >= 0) { |
|
start_time = e->time; |
|
} else { |
|
multiple_edits = 1; |
|
} |
|
} |
|
|
|
if (multiple_edits && !mov->advanced_editlist) |
|
av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, " |
|
"Use -advanced_editlist to correctly decode otherwise " |
|
"a/v desync might occur\n"); |
|
|
|
/* adjust first dts according to edit list */ |
|
if ((empty_duration || start_time) && mov->time_scale > 0) { |
|
if (empty_duration) |
|
empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale); |
|
sc->time_offset = start_time - empty_duration; |
|
sc->min_corrected_pts = start_time; |
|
if (!mov->advanced_editlist) |
|
current_dts = -sc->time_offset; |
|
} |
|
|
|
if (!multiple_edits && !mov->advanced_editlist && |
|
st->codecpar->codec_id == AV_CODEC_ID_AAC && start_time > 0) |
|
sc->start_pad = start_time; |
|
} |
|
|
|
/* only use old uncompressed audio chunk demuxing when stts specifies it */ |
|
if (!(st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && |
|
sc->stts_count == 1 && sc->stts_data[0].duration == 1)) { |
|
unsigned int current_sample = 0; |
|
unsigned int stts_sample = 0; |
|
unsigned int sample_size; |
|
unsigned int distance = 0; |
|
unsigned int rap_group_index = 0; |
|
unsigned int rap_group_sample = 0; |
|
int64_t last_dts = 0; |
|
int64_t dts_correction = 0; |
|
int rap_group_present = sc->rap_group_count && sc->rap_group; |
|
int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0); |
|
|
|
current_dts -= sc->dts_shift; |
|
last_dts = current_dts; |
|
|
|
if (!sc->sample_count || st->internal->nb_index_entries) |
|
return; |
|
if (sc->sample_count >= UINT_MAX / sizeof(*st->internal->index_entries) - st->internal->nb_index_entries) |
|
return; |
|
if (av_reallocp_array(&st->internal->index_entries, |
|
st->internal->nb_index_entries + sc->sample_count, |
|
sizeof(*st->internal->index_entries)) < 0) { |
|
st->internal->nb_index_entries = 0; |
|
return; |
|
} |
|
st->internal->index_entries_allocated_size = (st->internal->nb_index_entries + sc->sample_count) * sizeof(*st->internal->index_entries); |
|
|
|
if (ctts_data_old) { |
|
// Expand ctts entries such that we have a 1-1 mapping with samples |
|
if (sc->sample_count >= UINT_MAX / sizeof(*sc->ctts_data)) |
|
return; |
|
sc->ctts_count = 0; |
|
sc->ctts_allocated_size = 0; |
|
sc->ctts_data = av_fast_realloc(NULL, &sc->ctts_allocated_size, |
|
sc->sample_count * sizeof(*sc->ctts_data)); |
|
if (!sc->ctts_data) { |
|
av_free(ctts_data_old); |
|
return; |
|
} |
|
|
|
memset((uint8_t*)(sc->ctts_data), 0, sc->ctts_allocated_size); |
|
|
|
for (i = 0; i < ctts_count_old && |
|
sc->ctts_count < sc->sample_count; i++) |
|
for (j = 0; j < ctts_data_old[i].count && |
|
sc->ctts_count < sc->sample_count; j++) |
|
add_ctts_entry(&sc->ctts_data, &sc->ctts_count, |
|
&sc->ctts_allocated_size, 1, |
|
ctts_data_old[i].duration); |
|
av_free(ctts_data_old); |
|
} |
|
|
|
for (i = 0; i < sc->chunk_count; i++) { |
|
int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX; |
|
current_offset = sc->chunk_offsets[i]; |
|
while (mov_stsc_index_valid(stsc_index, sc->stsc_count) && |
|
i + 1 == sc->stsc_data[stsc_index + 1].first) |
|
stsc_index++; |
|
|
|
if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size && |
|
sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) { |
|
av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size); |
|
sc->stsz_sample_size = sc->sample_size; |
|
} |
|
if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) { |
|
av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size); |
|
sc->stsz_sample_size = sc->sample_size; |
|
} |
|
|
|
for (j = 0; j < sc->stsc_data[stsc_index].count; j++) { |
|
int keyframe = 0; |
|
if (current_sample >= sc->sample_count) { |
|
av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n"); |
|
return; |
|
} |
|
|
|
if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) { |
|
keyframe = 1; |
|
if (stss_index + 1 < sc->keyframe_count) |
|
stss_index++; |
|
} else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) { |
|
keyframe = 1; |
|
if (stps_index + 1 < sc->stps_count) |
|
stps_index++; |
|
} |
|
if (rap_group_present && rap_group_index < sc->rap_group_count) { |
|
if (sc->rap_group[rap_group_index].index > 0) |
|
keyframe = 1; |
|
if (++rap_group_sample == sc->rap_group[rap_group_index].count) { |
|
rap_group_sample = 0; |
|
rap_group_index++; |
|
} |
|
} |
|
if (sc->keyframe_absent |
|
&& !sc->stps_count |
|
&& !rap_group_present |
|
&& (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0))) |
|
keyframe = 1; |
|
if (keyframe) |
|
distance = 0; |
|
sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample]; |
|
if (sc->pseudo_stream_id == -1 || |
|
sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) { |
|
AVIndexEntry *e; |
|
if (sample_size > 0x3FFFFFFF) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", sample_size); |
|
return; |
|
} |
|
e = &st->internal->index_entries[st->internal->nb_index_entries++]; |
|
e->pos = current_offset; |
|
e->timestamp = current_dts; |
|
e->size = sample_size; |
|
e->min_distance = distance; |
|
e->flags = keyframe ? AVINDEX_KEYFRAME : 0; |
|
av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %u, offset %"PRIx64", dts %"PRId64", " |
|
"size %u, distance %u, keyframe %d\n", st->index, current_sample, |
|
current_offset, current_dts, sample_size, distance, keyframe); |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->internal->nb_index_entries < 100) |
|
ff_rfps_add_frame(mov->fc, st, current_dts); |
|
} |
|
|
|
current_offset += sample_size; |
|
stream_size += sample_size; |
|
|
|
/* A negative sample duration is invalid based on the spec, |
|
* but some samples need it to correct the DTS. */ |
|
if (sc->stts_data[stts_index].duration < 0) { |
|
av_log(mov->fc, AV_LOG_WARNING, |
|
"Invalid SampleDelta %d in STTS, at %d st:%d\n", |
|
sc->stts_data[stts_index].duration, stts_index, |
|
st->index); |
|
dts_correction += sc->stts_data[stts_index].duration - 1; |
|
sc->stts_data[stts_index].duration = 1; |
|
} |
|
current_dts += sc->stts_data[stts_index].duration; |
|
if (!dts_correction || current_dts + dts_correction > last_dts) { |
|
current_dts += dts_correction; |
|
dts_correction = 0; |
|
} else { |
|
/* Avoid creating non-monotonous DTS */ |
|
dts_correction += current_dts - last_dts - 1; |
|
current_dts = last_dts + 1; |
|
} |
|
last_dts = current_dts; |
|
distance++; |
|
stts_sample++; |
|
current_sample++; |
|
if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) { |
|
stts_sample = 0; |
|
stts_index++; |
|
} |
|
} |
|
} |
|
if (st->duration > 0) |
|
st->codecpar->bit_rate = stream_size*8*sc->time_scale/st->duration; |
|
} else { |
|
unsigned chunk_samples, total = 0; |
|
|
|
if (!sc->chunk_count) |
|
return; |
|
|
|
// compute total chunk count |
|
for (i = 0; i < sc->stsc_count; i++) { |
|
unsigned count, chunk_count; |
|
|
|
chunk_samples = sc->stsc_data[i].count; |
|
if (i != sc->stsc_count - 1 && |
|
sc->samples_per_frame && chunk_samples % sc->samples_per_frame) { |
|
av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n"); |
|
return; |
|
} |
|
|
|
if (sc->samples_per_frame >= 160) { // gsm |
|
count = chunk_samples / sc->samples_per_frame; |
|
} else if (sc->samples_per_frame > 1) { |
|
unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame; |
|
count = (chunk_samples+samples-1) / samples; |
|
} else { |
|
count = (chunk_samples+1023) / 1024; |
|
} |
|
|
|
if (mov_stsc_index_valid(i, sc->stsc_count)) |
|
chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first; |
|
else |
|
chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1); |
|
total += chunk_count * count; |
|
} |
|
|
|
av_log(mov->fc, AV_LOG_TRACE, "chunk count %u\n", total); |
|
if (total >= UINT_MAX / sizeof(*st->internal->index_entries) - st->internal->nb_index_entries) |
|
return; |
|
if (av_reallocp_array(&st->internal->index_entries, |
|
st->internal->nb_index_entries + total, |
|
sizeof(*st->internal->index_entries)) < 0) { |
|
st->internal->nb_index_entries = 0; |
|
return; |
|
} |
|
st->internal->index_entries_allocated_size = (st->internal->nb_index_entries + total) * sizeof(*st->internal->index_entries); |
|
|
|
// populate index |
|
for (i = 0; i < sc->chunk_count; i++) { |
|
current_offset = sc->chunk_offsets[i]; |
|
if (mov_stsc_index_valid(stsc_index, sc->stsc_count) && |
|
i + 1 == sc->stsc_data[stsc_index + 1].first) |
|
stsc_index++; |
|
chunk_samples = sc->stsc_data[stsc_index].count; |
|
|
|
while (chunk_samples > 0) { |
|
AVIndexEntry *e; |
|
unsigned size, samples; |
|
|
|
if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) { |
|
avpriv_request_sample(mov->fc, |
|
"Zero bytes per frame, but %d samples per frame", |
|
sc->samples_per_frame); |
|
return; |
|
} |
|
|
|
if (sc->samples_per_frame >= 160) { // gsm |
|
samples = sc->samples_per_frame; |
|
size = sc->bytes_per_frame; |
|
} else { |
|
if (sc->samples_per_frame > 1) { |
|
samples = FFMIN((1024 / sc->samples_per_frame)* |
|
sc->samples_per_frame, chunk_samples); |
|
size = (samples / sc->samples_per_frame) * sc->bytes_per_frame; |
|
} else { |
|
samples = FFMIN(1024, chunk_samples); |
|
size = samples * sc->sample_size; |
|
} |
|
} |
|
|
|
if (st->internal->nb_index_entries >= total) { |
|
av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %u\n", total); |
|
return; |
|
} |
|
if (size > 0x3FFFFFFF) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", size); |
|
return; |
|
} |
|
e = &st->internal->index_entries[st->internal->nb_index_entries++]; |
|
e->pos = current_offset; |
|
e->timestamp = current_dts; |
|
e->size = size; |
|
e->min_distance = 0; |
|
e->flags = AVINDEX_KEYFRAME; |
|
av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %u, offset %"PRIx64", dts %"PRId64", " |
|
"size %u, duration %u\n", st->index, i, current_offset, current_dts, |
|
size, samples); |
|
|
|
current_offset += size; |
|
current_dts += samples; |
|
chunk_samples -= samples; |
|
} |
|
} |
|
} |
|
|
|
if (!mov->ignore_editlist && mov->advanced_editlist) { |
|
// Fix index according to edit lists. |
|
mov_fix_index(mov, st); |
|
} |
|
|
|
// Update start time of the stream. |
|
if (st->start_time == AV_NOPTS_VALUE && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->internal->nb_index_entries > 0) { |
|
st->start_time = st->internal->index_entries[0].timestamp + sc->dts_shift; |
|
if (sc->ctts_data) { |
|
st->start_time += sc->ctts_data[0].duration; |
|
} |
|
} |
|
|
|
mov_estimate_video_delay(mov, st); |
|
} |
|
|
|
static int test_same_origin(const char *src, const char *ref) { |
|
char src_proto[64]; |
|
char ref_proto[64]; |
|
char src_auth[256]; |
|
char ref_auth[256]; |
|
char src_host[256]; |
|
char ref_host[256]; |
|
int src_port=-1; |
|
int ref_port=-1; |
|
|
|
av_url_split(src_proto, sizeof(src_proto), src_auth, sizeof(src_auth), src_host, sizeof(src_host), &src_port, NULL, 0, src); |
|
av_url_split(ref_proto, sizeof(ref_proto), ref_auth, sizeof(ref_auth), ref_host, sizeof(ref_host), &ref_port, NULL, 0, ref); |
|
|
|
if (strlen(src) == 0) { |
|
return -1; |
|
} else if (strlen(src_auth) + 1 >= sizeof(src_auth) || |
|
strlen(ref_auth) + 1 >= sizeof(ref_auth) || |
|
strlen(src_host) + 1 >= sizeof(src_host) || |
|
strlen(ref_host) + 1 >= sizeof(ref_host)) { |
|
return 0; |
|
} else if (strcmp(src_proto, ref_proto) || |
|
strcmp(src_auth, ref_auth) || |
|
strcmp(src_host, ref_host) || |
|
src_port != ref_port) { |
|
return 0; |
|
} else |
|
return 1; |
|
} |
|
|
|
static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref) |
|
{ |
|
/* try relative path, we do not try the absolute because it can leak information about our |
|
system to an attacker */ |
|
if (ref->nlvl_to > 0 && ref->nlvl_from > 0) { |
|
char filename[1025]; |
|
const char *src_path; |
|
int i, l; |
|
|
|
/* find a source dir */ |
|
src_path = strrchr(src, '/'); |
|
if (src_path) |
|
src_path++; |
|
else |
|
src_path = src; |
|
|
|
/* find a next level down to target */ |
|
for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--) |
|
if (ref->path[l] == '/') { |
|
if (i == ref->nlvl_to - 1) |
|
break; |
|
else |
|
i++; |
|
} |
|
|
|
/* compose filename if next level down to target was found */ |
|
if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) { |
|
memcpy(filename, src, src_path - src); |
|
filename[src_path - src] = 0; |
|
|
|
for (i = 1; i < ref->nlvl_from; i++) |
|
av_strlcat(filename, "../", sizeof(filename)); |
|
|
|
av_strlcat(filename, ref->path + l + 1, sizeof(filename)); |
|
if (!c->use_absolute_path) { |
|
int same_origin = test_same_origin(src, filename); |
|
|
|
if (!same_origin) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Reference with mismatching origin, %s not tried for security reasons, " |
|
"set demuxer option use_absolute_path to allow it anyway\n", |
|
ref->path); |
|
return AVERROR(ENOENT); |
|
} |
|
|
|
if (strstr(ref->path + l + 1, "..") || |
|
strstr(ref->path + l + 1, ":") || |
|
(ref->nlvl_from > 1 && same_origin < 0) || |
|
(filename[0] == '/' && src_path == src)) |
|
return AVERROR(ENOENT); |
|
} |
|
|
|
if (strlen(filename) + 1 == sizeof(filename)) |
|
return AVERROR(ENOENT); |
|
if (!c->fc->io_open(c->fc, pb, filename, AVIO_FLAG_READ, NULL)) |
|
return 0; |
|
} |
|
} else if (c->use_absolute_path) { |
|
av_log(c->fc, AV_LOG_WARNING, "Using absolute path on user request, " |
|
"this is a possible security issue\n"); |
|
if (!c->fc->io_open(c->fc, pb, ref->path, AVIO_FLAG_READ, NULL)) |
|
return 0; |
|
} else { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Absolute path %s not tried for security reasons, " |
|
"set demuxer option use_absolute_path to allow absolute paths\n", |
|
ref->path); |
|
} |
|
|
|
return AVERROR(ENOENT); |
|
} |
|
|
|
static void fix_timescale(MOVContext *c, MOVStreamContext *sc) |
|
{ |
|
if (sc->time_scale <= 0) { |
|
av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex); |
|
sc->time_scale = c->time_scale; |
|
if (sc->time_scale <= 0) |
|
sc->time_scale = 1; |
|
} |
|
} |
|
|
|
static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int ret; |
|
|
|
st = avformat_new_stream(c->fc, NULL); |
|
if (!st) return AVERROR(ENOMEM); |
|
st->id = -1; |
|
sc = av_mallocz(sizeof(MOVStreamContext)); |
|
if (!sc) return AVERROR(ENOMEM); |
|
|
|
st->priv_data = sc; |
|
st->codecpar->codec_type = AVMEDIA_TYPE_DATA; |
|
sc->ffindex = st->index; |
|
c->trak_index = st->index; |
|
|
|
if ((ret = mov_read_default(c, pb, atom)) < 0) |
|
return ret; |
|
|
|
c->trak_index = -1; |
|
|
|
// Here stsc refers to a chunk not described in stco. This is technically invalid, |
|
// but we can overlook it (clearing stsc) whenever stts_count == 0 (indicating no samples). |
|
if (!sc->chunk_count && !sc->stts_count && sc->stsc_count) { |
|
sc->stsc_count = 0; |
|
av_freep(&sc->stsc_data); |
|
} |
|
|
|
/* sanity checks */ |
|
if ((sc->chunk_count && (!sc->stts_count || !sc->stsc_count || |
|
(!sc->sample_size && !sc->sample_count))) || |
|
(!sc->chunk_count && sc->sample_count)) { |
|
av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n", |
|
st->index); |
|
return 0; |
|
} |
|
if (sc->stsc_count && sc->stsc_data[ sc->stsc_count - 1 ].first > sc->chunk_count) { |
|
av_log(c->fc, AV_LOG_ERROR, "stream %d, contradictionary STSC and STCO\n", |
|
st->index); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
fix_timescale(c, sc); |
|
|
|
avpriv_set_pts_info(st, 64, 1, sc->time_scale); |
|
|
|
mov_build_index(c, st); |
|
|
|
if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { |
|
MOVDref *dref = &sc->drefs[sc->dref_id - 1]; |
|
if (c->enable_drefs) { |
|
if (mov_open_dref(c, &sc->pb, c->fc->url, dref) < 0) |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"stream %d, error opening alias: path='%s', dir='%s', " |
|
"filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n", |
|
st->index, dref->path, dref->dir, dref->filename, |
|
dref->volume, dref->nlvl_from, dref->nlvl_to); |
|
} else { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"Skipped opening external track: " |
|
"stream %d, alias: path='%s', dir='%s', " |
|
"filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d." |
|
"Set enable_drefs to allow this.\n", |
|
st->index, dref->path, dref->dir, dref->filename, |
|
dref->volume, dref->nlvl_from, dref->nlvl_to); |
|
} |
|
} else { |
|
sc->pb = c->fc->pb; |
|
sc->pb_is_copied = 1; |
|
} |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
if (!st->sample_aspect_ratio.num && st->codecpar->width && st->codecpar->height && |
|
sc->height && sc->width && |
|
(st->codecpar->width != sc->width || st->codecpar->height != sc->height)) { |
|
st->sample_aspect_ratio = av_d2q(((double)st->codecpar->height * sc->width) / |
|
((double)st->codecpar->width * sc->height), INT_MAX); |
|
} |
|
|
|
#if FF_API_R_FRAME_RATE |
|
if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1)) |
|
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, |
|
sc->time_scale, sc->stts_data[0].duration, INT_MAX); |
|
#endif |
|
} |
|
|
|
// done for ai5q, ai52, ai55, ai1q, ai12 and ai15. |
|
if (!st->codecpar->extradata_size && st->codecpar->codec_id == AV_CODEC_ID_H264 && |
|
TAG_IS_AVCI(st->codecpar->codec_tag)) { |
|
ret = ff_generate_avci_extradata(st); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
switch (st->codecpar->codec_id) { |
|
#if CONFIG_H261_DECODER |
|
case AV_CODEC_ID_H261: |
|
#endif |
|
#if CONFIG_H263_DECODER |
|
case AV_CODEC_ID_H263: |
|
#endif |
|
#if CONFIG_MPEG4_DECODER |
|
case AV_CODEC_ID_MPEG4: |
|
#endif |
|
st->codecpar->width = 0; /* let decoder init width/height */ |
|
st->codecpar->height= 0; |
|
break; |
|
} |
|
|
|
// If the duration of the mp3 packets is not constant, then they could need a parser |
|
if (st->codecpar->codec_id == AV_CODEC_ID_MP3 |
|
&& sc->stts_count > 3 |
|
&& sc->stts_count*10 > st->nb_frames |
|
&& sc->time_scale == st->codecpar->sample_rate) { |
|
st->need_parsing = AVSTREAM_PARSE_FULL; |
|
} |
|
/* Do not need those anymore. */ |
|
av_freep(&sc->chunk_offsets); |
|
av_freep(&sc->sample_sizes); |
|
av_freep(&sc->keyframes); |
|
av_freep(&sc->stts_data); |
|
av_freep(&sc->stps_data); |
|
av_freep(&sc->elst_data); |
|
av_freep(&sc->rap_group); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int ret; |
|
c->itunes_metadata = 1; |
|
ret = mov_read_default(c, pb, atom); |
|
c->itunes_metadata = 0; |
|
return ret; |
|
} |
|
|
|
static int mov_read_keys(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
uint32_t count; |
|
uint32_t i; |
|
|
|
if (atom.size < 8) |
|
return 0; |
|
|
|
avio_skip(pb, 4); |
|
count = avio_rb32(pb); |
|
if (count > UINT_MAX / sizeof(*c->meta_keys) - 1) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"The 'keys' atom with the invalid key count: %"PRIu32"\n", count); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
c->meta_keys_count = count + 1; |
|
c->meta_keys = av_mallocz(c->meta_keys_count * sizeof(*c->meta_keys)); |
|
if (!c->meta_keys) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 1; i <= count; ++i) { |
|
uint32_t key_size = avio_rb32(pb); |
|
uint32_t type = avio_rl32(pb); |
|
if (key_size < 8) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"The key# %"PRIu32" in meta has invalid size:" |
|
"%"PRIu32"\n", i, key_size); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
key_size -= 8; |
|
if (type != MKTAG('m','d','t','a')) { |
|
avio_skip(pb, key_size); |
|
} |
|
c->meta_keys[i] = av_mallocz(key_size + 1); |
|
if (!c->meta_keys[i]) |
|
return AVERROR(ENOMEM); |
|
avio_read(pb, c->meta_keys[i], key_size); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int64_t end = av_sat_add64(avio_tell(pb), atom.size); |
|
uint8_t *key = NULL, *val = NULL, *mean = NULL; |
|
int i; |
|
int ret = 0; |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
for (i = 0; i < 3; i++) { |
|
uint8_t **p; |
|
uint32_t len, tag; |
|
|
|
if (end - avio_tell(pb) <= 12) |
|
break; |
|
|
|
len = avio_rb32(pb); |
|
tag = avio_rl32(pb); |
|
avio_skip(pb, 4); // flags |
|
|
|
if (len < 12 || len - 12 > end - avio_tell(pb)) |
|
break; |
|
len -= 12; |
|
|
|
if (tag == MKTAG('m', 'e', 'a', 'n')) |
|
p = &mean; |
|
else if (tag == MKTAG('n', 'a', 'm', 'e')) |
|
p = &key; |
|
else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) { |
|
avio_skip(pb, 4); |
|
len -= 4; |
|
p = &val; |
|
} else |
|
break; |
|
|
|
if (*p) |
|
break; |
|
|
|
*p = av_malloc(len + 1); |
|
if (!*p) { |
|
ret = AVERROR(ENOMEM); |
|
break; |
|
} |
|
ret = ffio_read_size(pb, *p, len); |
|
if (ret < 0) { |
|
av_freep(p); |
|
break; |
|
} |
|
(*p)[len] = 0; |
|
} |
|
|
|
if (mean && key && val) { |
|
if (strcmp(key, "iTunSMPB") == 0) { |
|
int priming, remainder, samples; |
|
if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){ |
|
if(priming>0 && priming<16384) |
|
sc->start_pad = priming; |
|
} |
|
} |
|
if (strcmp(key, "cdec") != 0) { |
|
av_dict_set(&c->fc->metadata, key, val, |
|
AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL); |
|
key = val = NULL; |
|
} |
|
} else { |
|
av_log(c->fc, AV_LOG_VERBOSE, |
|
"Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size); |
|
} |
|
|
|
avio_seek(pb, end, SEEK_SET); |
|
av_freep(&key); |
|
av_freep(&val); |
|
av_freep(&mean); |
|
return ret; |
|
} |
|
|
|
static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
while (atom.size > 8) { |
|
uint32_t tag; |
|
if (avio_feof(pb)) |
|
return AVERROR_EOF; |
|
tag = avio_rl32(pb); |
|
atom.size -= 4; |
|
if (tag == MKTAG('h','d','l','r')) { |
|
avio_seek(pb, -8, SEEK_CUR); |
|
atom.size += 8; |
|
return mov_read_default(c, pb, atom); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
// return 1 when matrix is identity, 0 otherwise |
|
#define IS_MATRIX_IDENT(matrix) \ |
|
( (matrix)[0][0] == (1 << 16) && \ |
|
(matrix)[1][1] == (1 << 16) && \ |
|
(matrix)[2][2] == (1 << 30) && \ |
|
!(matrix)[0][1] && !(matrix)[0][2] && \ |
|
!(matrix)[1][0] && !(matrix)[1][2] && \ |
|
!(matrix)[2][0] && !(matrix)[2][1]) |
|
|
|
static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int i, j, e; |
|
int width; |
|
int height; |
|
int display_matrix[3][3]; |
|
int res_display_matrix[3][3] = { { 0 } }; |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int version; |
|
int flags; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
// Each stream (trak) should have exactly 1 tkhd. This catches bad files and |
|
// avoids corrupting AVStreams mapped to an earlier tkhd. |
|
if (st->id != -1) |
|
return AVERROR_INVALIDDATA; |
|
|
|
version = avio_r8(pb); |
|
flags = avio_rb24(pb); |
|
st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0; |
|
|
|
if (version == 1) { |
|
avio_rb64(pb); |
|
avio_rb64(pb); |
|
} else { |
|
avio_rb32(pb); /* creation time */ |
|
avio_rb32(pb); /* modification time */ |
|
} |
|
st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/ |
|
avio_rb32(pb); /* reserved */ |
|
|
|
/* highlevel (considering edits) duration in movie timebase */ |
|
(version == 1) ? avio_rb64(pb) : avio_rb32(pb); |
|
avio_rb32(pb); /* reserved */ |
|
avio_rb32(pb); /* reserved */ |
|
|
|
avio_rb16(pb); /* layer */ |
|
avio_rb16(pb); /* alternate group */ |
|
avio_rb16(pb); /* volume */ |
|
avio_rb16(pb); /* reserved */ |
|
|
|
//read in the display matrix (outlined in ISO 14496-12, Section 6.2.2) |
|
// they're kept in fixed point format through all calculations |
|
// save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX |
|
// side data, but the scale factor is not needed to calculate aspect ratio |
|
for (i = 0; i < 3; i++) { |
|
display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point |
|
display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point |
|
display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point |
|
} |
|
|
|
width = avio_rb32(pb); // 16.16 fixed point track width |
|
height = avio_rb32(pb); // 16.16 fixed point track height |
|
sc->width = width >> 16; |
|
sc->height = height >> 16; |
|
|
|
// apply the moov display matrix (after the tkhd one) |
|
for (i = 0; i < 3; i++) { |
|
const int sh[3] = { 16, 16, 30 }; |
|
for (j = 0; j < 3; j++) { |
|
for (e = 0; e < 3; e++) { |
|
res_display_matrix[i][j] += |
|
((int64_t) display_matrix[i][e] * |
|
c->movie_display_matrix[e][j]) >> sh[e]; |
|
} |
|
} |
|
} |
|
|
|
// save the matrix when it is not the default identity |
|
if (!IS_MATRIX_IDENT(res_display_matrix)) { |
|
double rotate; |
|
|
|
av_freep(&sc->display_matrix); |
|
sc->display_matrix = av_malloc(sizeof(int32_t) * 9); |
|
if (!sc->display_matrix) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < 3; i++) |
|
for (j = 0; j < 3; j++) |
|
sc->display_matrix[i * 3 + j] = res_display_matrix[i][j]; |
|
|
|
#if FF_API_OLD_ROTATE_API |
|
rotate = av_display_rotation_get(sc->display_matrix); |
|
if (!isnan(rotate)) { |
|
char rotate_buf[64]; |
|
rotate = -rotate; |
|
if (rotate < 0) // for backward compatibility |
|
rotate += 360; |
|
snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate); |
|
av_dict_set(&st->metadata, "rotate", rotate_buf, 0); |
|
} |
|
#endif |
|
} |
|
|
|
// transform the display width/height according to the matrix |
|
// to keep the same scale, use [width height 1<<16] |
|
if (width && height && sc->display_matrix) { |
|
double disp_transform[2]; |
|
|
|
for (i = 0; i < 2; i++) |
|
disp_transform[i] = hypot(sc->display_matrix[0 + i], |
|
sc->display_matrix[3 + i]); |
|
|
|
if (disp_transform[0] > 0 && disp_transform[1] > 0 && |
|
disp_transform[0] < (1<<24) && disp_transform[1] < (1<<24) && |
|
fabs((disp_transform[0] / disp_transform[1]) - 1.0) > 0.01) |
|
st->sample_aspect_ratio = av_d2q( |
|
disp_transform[0] / disp_transform[1], |
|
INT_MAX); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVFragment *frag = &c->fragment; |
|
MOVTrackExt *trex = NULL; |
|
int flags, track_id, i; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
|
|
avio_r8(pb); /* version */ |
|
flags = avio_rb24(pb); |
|
|
|
track_id = avio_rb32(pb); |
|
if (!track_id) |
|
return AVERROR_INVALIDDATA; |
|
for (i = 0; i < c->trex_count; i++) |
|
if (c->trex_data[i].track_id == track_id) { |
|
trex = &c->trex_data[i]; |
|
break; |
|
} |
|
if (!trex) { |
|
av_log(c->fc, AV_LOG_WARNING, "could not find corresponding trex (id %u)\n", track_id); |
|
return 0; |
|
} |
|
c->fragment.found_tfhd = 1; |
|
frag->track_id = track_id; |
|
set_frag_stream(&c->frag_index, track_id); |
|
|
|
frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ? |
|
avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ? |
|
frag->moof_offset : frag->implicit_offset; |
|
frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id; |
|
|
|
frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ? |
|
avio_rb32(pb) : trex->duration; |
|
frag->size = flags & MOV_TFHD_DEFAULT_SIZE ? |
|
avio_rb32(pb) : trex->size; |
|
frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ? |
|
avio_rb32(pb) : trex->flags; |
|
av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags); |
|
|
|
frag_stream_info = get_current_frag_stream_info(&c->frag_index); |
|
if (frag_stream_info) |
|
frag_stream_info->next_trun_dts = AV_NOPTS_VALUE; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
unsigned i, num; |
|
void *new_tracks; |
|
|
|
num = atom.size / 4; |
|
if (!(new_tracks = av_malloc_array(num, sizeof(int)))) |
|
return AVERROR(ENOMEM); |
|
|
|
av_free(c->chapter_tracks); |
|
c->chapter_tracks = new_tracks; |
|
c->nb_chapter_tracks = num; |
|
|
|
for (i = 0; i < num && !pb->eof_reached; i++) |
|
c->chapter_tracks[i] = avio_rb32(pb); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVTrackExt *trex; |
|
int err; |
|
|
|
if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) |
|
return AVERROR_INVALIDDATA; |
|
if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1, |
|
sizeof(*c->trex_data))) < 0) { |
|
c->trex_count = 0; |
|
return err; |
|
} |
|
|
|
c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used. |
|
|
|
trex = &c->trex_data[c->trex_count++]; |
|
avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
trex->track_id = avio_rb32(pb); |
|
trex->stsd_id = avio_rb32(pb); |
|
trex->duration = avio_rb32(pb); |
|
trex->size = avio_rb32(pb); |
|
trex->flags = avio_rb32(pb); |
|
return 0; |
|
} |
|
|
|
static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVFragment *frag = &c->fragment; |
|
AVStream *st = NULL; |
|
MOVStreamContext *sc; |
|
int version, i; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
int64_t base_media_decode_time; |
|
|
|
for (i = 0; i < c->fc->nb_streams; i++) { |
|
if (c->fc->streams[i]->id == frag->track_id) { |
|
st = c->fc->streams[i]; |
|
break; |
|
} |
|
} |
|
if (!st) { |
|
av_log(c->fc, AV_LOG_WARNING, "could not find corresponding track id %u\n", frag->track_id); |
|
return 0; |
|
} |
|
sc = st->priv_data; |
|
if (sc->pseudo_stream_id + 1 != frag->stsd_id && sc->pseudo_stream_id != -1) |
|
return 0; |
|
version = avio_r8(pb); |
|
avio_rb24(pb); /* flags */ |
|
if (version) { |
|
base_media_decode_time = avio_rb64(pb); |
|
} else { |
|
base_media_decode_time = avio_rb32(pb); |
|
} |
|
|
|
frag_stream_info = get_current_frag_stream_info(&c->frag_index); |
|
if (frag_stream_info) |
|
frag_stream_info->tfdt_dts = base_media_decode_time; |
|
sc->track_end = base_media_decode_time; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVFragment *frag = &c->fragment; |
|
AVStream *st = NULL; |
|
MOVStreamContext *sc; |
|
MOVStts *ctts_data; |
|
uint64_t offset; |
|
int64_t dts, pts = AV_NOPTS_VALUE; |
|
int data_offset = 0; |
|
unsigned entries, first_sample_flags = frag->flags; |
|
int flags, distance, i; |
|
int64_t prev_dts = AV_NOPTS_VALUE; |
|
int next_frag_index = -1, index_entry_pos; |
|
size_t requested_size; |
|
size_t old_ctts_allocated_size; |
|
AVIndexEntry *new_entries; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
|
|
if (!frag->found_tfhd) { |
|
av_log(c->fc, AV_LOG_ERROR, "trun track id unknown, no tfhd was found\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
for (i = 0; i < c->fc->nb_streams; i++) { |
|
if (c->fc->streams[i]->id == frag->track_id) { |
|
st = c->fc->streams[i]; |
|
break; |
|
} |
|
} |
|
if (!st) { |
|
av_log(c->fc, AV_LOG_WARNING, "could not find corresponding track id %u\n", frag->track_id); |
|
return 0; |
|
} |
|
sc = st->priv_data; |
|
if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1) |
|
return 0; |
|
|
|
// Find the next frag_index index that has a valid index_entry for |
|
// the current track_id. |
|
// |
|
// A valid index_entry means the trun for the fragment was read |
|
// and it's samples are in index_entries at the given position. |
|
// New index entries will be inserted before the index_entry found. |
|
index_entry_pos = st->internal->nb_index_entries; |
|
for (i = c->frag_index.current + 1; i < c->frag_index.nb_items; i++) { |
|
frag_stream_info = get_frag_stream_info(&c->frag_index, i, frag->track_id); |
|
if (frag_stream_info && frag_stream_info->index_entry >= 0) { |
|
next_frag_index = i; |
|
index_entry_pos = frag_stream_info->index_entry; |
|
break; |
|
} |
|
} |
|
av_assert0(index_entry_pos <= st->internal->nb_index_entries); |
|
|
|
avio_r8(pb); /* version */ |
|
flags = avio_rb24(pb); |
|
entries = avio_rb32(pb); |
|
av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %u\n", flags, entries); |
|
|
|
if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data)) |
|
return AVERROR_INVALIDDATA; |
|
if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb); |
|
if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb); |
|
|
|
frag_stream_info = get_current_frag_stream_info(&c->frag_index); |
|
if (frag_stream_info) { |
|
if (frag_stream_info->next_trun_dts != AV_NOPTS_VALUE) { |
|
dts = frag_stream_info->next_trun_dts - sc->time_offset; |
|
} else if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE && |
|
c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) { |
|
pts = frag_stream_info->first_tfra_pts; |
|
av_log(c->fc, AV_LOG_DEBUG, "found mfra time %"PRId64 |
|
", using it for pts\n", pts); |
|
} else if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE && |
|
c->use_mfra_for == FF_MOV_FLAG_MFRA_DTS) { |
|
dts = frag_stream_info->first_tfra_pts; |
|
av_log(c->fc, AV_LOG_DEBUG, "found mfra time %"PRId64 |
|
", using it for dts\n", pts); |
|
} else if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE) { |
|
// FIXME: sidx earliest_presentation_time is *PTS*, s.b. |
|
// pts = frag_stream_info->sidx_pts; |
|
dts = frag_stream_info->sidx_pts - sc->time_offset; |
|
av_log(c->fc, AV_LOG_DEBUG, "found sidx time %"PRId64 |
|
", using it for pts\n", pts); |
|
} else if (frag_stream_info->tfdt_dts != AV_NOPTS_VALUE) { |
|
dts = frag_stream_info->tfdt_dts - sc->time_offset; |
|
av_log(c->fc, AV_LOG_DEBUG, "found tfdt time %"PRId64 |
|
", using it for dts\n", dts); |
|
} else { |
|
dts = sc->track_end - sc->time_offset; |
|
av_log(c->fc, AV_LOG_DEBUG, "found track end time %"PRId64 |
|
", using it for dts\n", dts); |
|
} |
|
} else { |
|
dts = sc->track_end - sc->time_offset; |
|
av_log(c->fc, AV_LOG_DEBUG, "found track end time %"PRId64 |
|
", using it for dts\n", dts); |
|
} |
|
offset = frag->base_data_offset + data_offset; |
|
distance = 0; |
|
av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags); |
|
|
|
// realloc space for new index entries |
|
if((uint64_t)st->internal->nb_index_entries + entries >= UINT_MAX / sizeof(AVIndexEntry)) { |
|
entries = UINT_MAX / sizeof(AVIndexEntry) - st->internal->nb_index_entries; |
|
av_log(c->fc, AV_LOG_ERROR, "Failed to add index entry\n"); |
|
} |
|
if (entries == 0) |
|
return 0; |
|
|
|
requested_size = (st->internal->nb_index_entries + entries) * sizeof(AVIndexEntry); |
|
new_entries = av_fast_realloc(st->internal->index_entries, |
|
&st->internal->index_entries_allocated_size, |
|
requested_size); |
|
if (!new_entries) |
|
return AVERROR(ENOMEM); |
|
st->internal->index_entries= new_entries; |
|
|
|
requested_size = (st->internal->nb_index_entries + entries) * sizeof(*sc->ctts_data); |
|
old_ctts_allocated_size = sc->ctts_allocated_size; |
|
ctts_data = av_fast_realloc(sc->ctts_data, &sc->ctts_allocated_size, |
|
requested_size); |
|
if (!ctts_data) |
|
return AVERROR(ENOMEM); |
|
sc->ctts_data = ctts_data; |
|
|
|
// In case there were samples without ctts entries, ensure they get |
|
// zero valued entries. This ensures clips which mix boxes with and |
|
// without ctts entries don't pickup uninitialized data. |
|
memset((uint8_t*)(sc->ctts_data) + old_ctts_allocated_size, 0, |
|
sc->ctts_allocated_size - old_ctts_allocated_size); |
|
|
|
if (index_entry_pos < st->internal->nb_index_entries) { |
|
// Make hole in index_entries and ctts_data for new samples |
|
memmove(st->internal->index_entries + index_entry_pos + entries, |
|
st->internal->index_entries + index_entry_pos, |
|
sizeof(*st->internal->index_entries) * |
|
(st->internal->nb_index_entries - index_entry_pos)); |
|
memmove(sc->ctts_data + index_entry_pos + entries, |
|
sc->ctts_data + index_entry_pos, |
|
sizeof(*sc->ctts_data) * (sc->ctts_count - index_entry_pos)); |
|
if (index_entry_pos < sc->current_sample) { |
|
sc->current_sample += entries; |
|
} |
|
} |
|
|
|
st->internal->nb_index_entries += entries; |
|
sc->ctts_count = st->internal->nb_index_entries; |
|
|
|
// Record the index_entry position in frag_index of this fragment |
|
if (frag_stream_info) |
|
frag_stream_info->index_entry = index_entry_pos; |
|
|
|
if (index_entry_pos > 0) |
|
prev_dts = st->internal->index_entries[index_entry_pos-1].timestamp; |
|
|
|
for (i = 0; i < entries && !pb->eof_reached; i++) { |
|
unsigned sample_size = frag->size; |
|
int sample_flags = i ? frag->flags : first_sample_flags; |
|
unsigned sample_duration = frag->duration; |
|
unsigned ctts_duration = 0; |
|
int keyframe = 0; |
|
int index_entry_flags = 0; |
|
|
|
if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb); |
|
if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb); |
|
if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb); |
|
if (flags & MOV_TRUN_SAMPLE_CTS) ctts_duration = avio_rb32(pb); |
|
|
|
mov_update_dts_shift(sc, ctts_duration, c->fc); |
|
if (pts != AV_NOPTS_VALUE) { |
|
dts = pts - sc->dts_shift; |
|
if (flags & MOV_TRUN_SAMPLE_CTS) { |
|
dts -= ctts_duration; |
|
} else { |
|
dts -= sc->time_offset; |
|
} |
|
av_log(c->fc, AV_LOG_DEBUG, |
|
"pts %"PRId64" calculated dts %"PRId64 |
|
" sc->dts_shift %d ctts.duration %d" |
|
" sc->time_offset %"PRId64 |
|
" flags & MOV_TRUN_SAMPLE_CTS %d\n", |
|
pts, dts, |
|
sc->dts_shift, ctts_duration, |
|
sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS); |
|
pts = AV_NOPTS_VALUE; |
|
} |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) |
|
keyframe = 1; |
|
else |
|
keyframe = |
|
!(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC | |
|
MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES)); |
|
if (keyframe) { |
|
distance = 0; |
|
index_entry_flags |= AVINDEX_KEYFRAME; |
|
} |
|
// Fragments can overlap in time. Discard overlapping frames after |
|
// decoding. |
|
if (prev_dts >= dts) |
|
index_entry_flags |= AVINDEX_DISCARD_FRAME; |
|
|
|
st->internal->index_entries[index_entry_pos].pos = offset; |
|
st->internal->index_entries[index_entry_pos].timestamp = dts; |
|
st->internal->index_entries[index_entry_pos].size= sample_size; |
|
st->internal->index_entries[index_entry_pos].min_distance= distance; |
|
st->internal->index_entries[index_entry_pos].flags = index_entry_flags; |
|
|
|
sc->ctts_data[index_entry_pos].count = 1; |
|
sc->ctts_data[index_entry_pos].duration = ctts_duration; |
|
index_entry_pos++; |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
|
"size %u, distance %d, keyframe %d\n", st->index, |
|
index_entry_pos, offset, dts, sample_size, distance, keyframe); |
|
distance++; |
|
dts += sample_duration; |
|
offset += sample_size; |
|
sc->data_size += sample_size; |
|
|
|
if (sample_duration <= INT64_MAX - sc->duration_for_fps && |
|
1 <= INT_MAX - sc->nb_frames_for_fps |
|
) { |
|
sc->duration_for_fps += sample_duration; |
|
sc->nb_frames_for_fps ++; |
|
} |
|
} |
|
if (frag_stream_info) |
|
frag_stream_info->next_trun_dts = dts + sc->time_offset; |
|
if (i < entries) { |
|
// EOF found before reading all entries. Fix the hole this would |
|
// leave in index_entries and ctts_data |
|
int gap = entries - i; |
|
memmove(st->internal->index_entries + index_entry_pos, |
|
st->internal->index_entries + index_entry_pos + gap, |
|
sizeof(*st->internal->index_entries) * |
|
(st->internal->nb_index_entries - (index_entry_pos + gap))); |
|
memmove(sc->ctts_data + index_entry_pos, |
|
sc->ctts_data + index_entry_pos + gap, |
|
sizeof(*sc->ctts_data) * |
|
(sc->ctts_count - (index_entry_pos + gap))); |
|
|
|
st->internal->nb_index_entries -= gap; |
|
sc->ctts_count -= gap; |
|
if (index_entry_pos < sc->current_sample) { |
|
sc->current_sample -= gap; |
|
} |
|
entries = i; |
|
} |
|
|
|
// The end of this new fragment may overlap in time with the start |
|
// of the next fragment in index_entries. Mark the samples in the next |
|
// fragment that overlap with AVINDEX_DISCARD_FRAME |
|
prev_dts = AV_NOPTS_VALUE; |
|
if (index_entry_pos > 0) |
|
prev_dts = st->internal->index_entries[index_entry_pos-1].timestamp; |
|
for (i = index_entry_pos; i < st->internal->nb_index_entries; i++) { |
|
if (prev_dts < st->internal->index_entries[i].timestamp) |
|
break; |
|
st->internal->index_entries[i].flags |= AVINDEX_DISCARD_FRAME; |
|
} |
|
|
|
// If a hole was created to insert the new index_entries into, |
|
// the index_entry recorded for all subsequent moof must |
|
// be incremented by the number of entries inserted. |
|
fix_frag_index_entries(&c->frag_index, next_frag_index, |
|
frag->track_id, entries); |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted TRUN atom\n"); |
|
return AVERROR_EOF; |
|
} |
|
|
|
frag->implicit_offset = offset; |
|
|
|
sc->track_end = dts + sc->time_offset; |
|
if (st->duration < sc->track_end) |
|
st->duration = sc->track_end; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int64_t stream_size = avio_size(pb); |
|
int64_t offset = av_sat_add64(avio_tell(pb), atom.size), pts, timestamp; |
|
uint8_t version, is_complete; |
|
unsigned i, j, track_id, item_count; |
|
AVStream *st = NULL; |
|
AVStream *ref_st = NULL; |
|
MOVStreamContext *sc, *ref_sc = NULL; |
|
AVRational timescale; |
|
|
|
version = avio_r8(pb); |
|
if (version > 1) { |
|
avpriv_request_sample(c->fc, "sidx version %u", version); |
|
return 0; |
|
} |
|
|
|
avio_rb24(pb); // flags |
|
|
|
track_id = avio_rb32(pb); // Reference ID |
|
for (i = 0; i < c->fc->nb_streams; i++) { |
|
if (c->fc->streams[i]->id == track_id) { |
|
st = c->fc->streams[i]; |
|
break; |
|
} |
|
} |
|
if (!st) { |
|
av_log(c->fc, AV_LOG_WARNING, "could not find corresponding track id %d\n", track_id); |
|
return 0; |
|
} |
|
|
|
sc = st->priv_data; |
|
|
|
timescale = av_make_q(1, avio_rb32(pb)); |
|
|
|
if (timescale.den <= 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid sidx timescale 1/%d\n", timescale.den); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (version == 0) { |
|
pts = avio_rb32(pb); |
|
offset += avio_rb32(pb); |
|
} else { |
|
pts = avio_rb64(pb); |
|
offset += avio_rb64(pb); |
|
} |
|
|
|
avio_rb16(pb); // reserved |
|
|
|
item_count = avio_rb16(pb); |
|
|
|
for (i = 0; i < item_count; i++) { |
|
int index; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
uint32_t size = avio_rb32(pb); |
|
uint32_t duration = avio_rb32(pb); |
|
if (size & 0x80000000) { |
|
avpriv_request_sample(c->fc, "sidx reference_type 1"); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
avio_rb32(pb); // sap_flags |
|
timestamp = av_rescale_q(pts, timescale, st->time_base); |
|
|
|
index = update_frag_index(c, offset); |
|
frag_stream_info = get_frag_stream_info(&c->frag_index, index, track_id); |
|
if (frag_stream_info) |
|
frag_stream_info->sidx_pts = timestamp; |
|
|
|
offset += size; |
|
pts += duration; |
|
} |
|
|
|
st->duration = sc->track_end = pts; |
|
|
|
sc->has_sidx = 1; |
|
|
|
// See if the remaining bytes are just an mfra which we can ignore. |
|
is_complete = offset == stream_size; |
|
if (!is_complete && (pb->seekable & AVIO_SEEKABLE_NORMAL)) { |
|
int64_t ret; |
|
int64_t original_pos = avio_tell(pb); |
|
if (!c->have_read_mfra_size) { |
|
if ((ret = avio_seek(pb, stream_size - 4, SEEK_SET)) < 0) |
|
return ret; |
|
c->mfra_size = avio_rb32(pb); |
|
c->have_read_mfra_size = 1; |
|
if ((ret = avio_seek(pb, original_pos, SEEK_SET)) < 0) |
|
return ret; |
|
} |
|
if (offset + c->mfra_size == stream_size) |
|
is_complete = 1; |
|
} |
|
|
|
if (is_complete) { |
|
// Find first entry in fragment index that came from an sidx. |
|
// This will pretty much always be the first entry. |
|
for (i = 0; i < c->frag_index.nb_items; i++) { |
|
MOVFragmentIndexItem * item = &c->frag_index.item[i]; |
|
for (j = 0; ref_st == NULL && j < item->nb_stream_info; j++) { |
|
MOVFragmentStreamInfo * si; |
|
si = &item->stream_info[j]; |
|
if (si->sidx_pts != AV_NOPTS_VALUE) { |
|
ref_st = c->fc->streams[j]; |
|
ref_sc = ref_st->priv_data; |
|
break; |
|
} |
|
} |
|
} |
|
if (ref_st) for (i = 0; i < c->fc->nb_streams; i++) { |
|
st = c->fc->streams[i]; |
|
sc = st->priv_data; |
|
if (!sc->has_sidx) { |
|
st->duration = sc->track_end = av_rescale(ref_st->duration, sc->time_scale, ref_sc->time_scale); |
|
} |
|
} |
|
|
|
c->frag_index.complete = 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */ |
|
/* like the files created with Adobe Premiere 5.0, for samples see */ |
|
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */ |
|
static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int err; |
|
|
|
if (atom.size < 8) |
|
return 0; /* continue */ |
|
if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */ |
|
avio_skip(pb, atom.size - 4); |
|
return 0; |
|
} |
|
atom.type = avio_rl32(pb); |
|
atom.size -= 8; |
|
if (atom.type != MKTAG('m','d','a','t')) { |
|
avio_skip(pb, atom.size); |
|
return 0; |
|
} |
|
err = mov_read_mdat(c, pb, atom); |
|
return err; |
|
} |
|
|
|
static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
#if CONFIG_ZLIB |
|
AVIOContext ctx; |
|
uint8_t *cmov_data; |
|
uint8_t *moov_data; /* uncompressed data */ |
|
long cmov_len, moov_len; |
|
int ret = -1; |
|
|
|
avio_rb32(pb); /* dcom atom */ |
|
if (avio_rl32(pb) != MKTAG('d','c','o','m')) |
|
return AVERROR_INVALIDDATA; |
|
if (avio_rl32(pb) != MKTAG('z','l','i','b')) { |
|
av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
avio_rb32(pb); /* cmvd atom */ |
|
if (avio_rl32(pb) != MKTAG('c','m','v','d')) |
|
return AVERROR_INVALIDDATA; |
|
moov_len = avio_rb32(pb); /* uncompressed size */ |
|
cmov_len = atom.size - 6 * 4; |
|
|
|
cmov_data = av_malloc(cmov_len); |
|
if (!cmov_data) |
|
return AVERROR(ENOMEM); |
|
moov_data = av_malloc(moov_len); |
|
if (!moov_data) { |
|
av_free(cmov_data); |
|
return AVERROR(ENOMEM); |
|
} |
|
ret = ffio_read_size(pb, cmov_data, cmov_len); |
|
if (ret < 0) |
|
goto free_and_return; |
|
|
|
ret = AVERROR_INVALIDDATA; |
|
if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK) |
|
goto free_and_return; |
|
if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0) |
|
goto free_and_return; |
|
ctx.seekable = AVIO_SEEKABLE_NORMAL; |
|
atom.type = MKTAG('m','o','o','v'); |
|
atom.size = moov_len; |
|
ret = mov_read_default(c, &ctx, atom); |
|
free_and_return: |
|
av_free(moov_data); |
|
av_free(cmov_data); |
|
return ret; |
|
#else |
|
av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n"); |
|
return AVERROR(ENOSYS); |
|
#endif |
|
} |
|
|
|
/* edit list atom */ |
|
static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVStreamContext *sc; |
|
int i, edit_count, version; |
|
int64_t elst_entry_size; |
|
|
|
if (c->fc->nb_streams < 1 || c->ignore_editlist) |
|
return 0; |
|
sc = c->fc->streams[c->fc->nb_streams-1]->priv_data; |
|
|
|
version = avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
edit_count = avio_rb32(pb); /* entries */ |
|
atom.size -= 8; |
|
|
|
elst_entry_size = version == 1 ? 20 : 12; |
|
if (atom.size != edit_count * elst_entry_size) { |
|
if (c->fc->strict_std_compliance >= FF_COMPLIANCE_STRICT) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid edit list entry_count: %d for elst atom of size: %"PRId64" bytes.\n", |
|
edit_count, atom.size + 8); |
|
return AVERROR_INVALIDDATA; |
|
} else { |
|
edit_count = atom.size / elst_entry_size; |
|
if (edit_count * elst_entry_size != atom.size) { |
|
av_log(c->fc, AV_LOG_WARNING, "ELST atom of %"PRId64" bytes, bigger than %d entries.\n", atom.size, edit_count); |
|
} |
|
} |
|
} |
|
|
|
if (!edit_count) |
|
return 0; |
|
if (sc->elst_data) |
|
av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n"); |
|
av_free(sc->elst_data); |
|
sc->elst_count = 0; |
|
sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data)); |
|
if (!sc->elst_data) |
|
return AVERROR(ENOMEM); |
|
|
|
av_log(c->fc, AV_LOG_TRACE, "track[%u].edit_count = %i\n", c->fc->nb_streams - 1, edit_count); |
|
for (i = 0; i < edit_count && atom.size > 0 && !pb->eof_reached; i++) { |
|
MOVElst *e = &sc->elst_data[i]; |
|
|
|
if (version == 1) { |
|
e->duration = avio_rb64(pb); |
|
e->time = avio_rb64(pb); |
|
atom.size -= 16; |
|
} else { |
|
e->duration = avio_rb32(pb); /* segment duration */ |
|
e->time = (int32_t)avio_rb32(pb); /* media time */ |
|
atom.size -= 8; |
|
} |
|
e->rate = avio_rb32(pb) / 65536.0; |
|
atom.size -= 4; |
|
av_log(c->fc, AV_LOG_TRACE, "duration=%"PRId64" time=%"PRId64" rate=%f\n", |
|
e->duration, e->time, e->rate); |
|
|
|
if (e->time < 0 && e->time != -1 && |
|
c->fc->strict_std_compliance >= FF_COMPLIANCE_STRICT) { |
|
av_log(c->fc, AV_LOG_ERROR, "Track %d, edit %d: Invalid edit list media time=%"PRId64"\n", |
|
c->fc->nb_streams-1, i, e->time); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} |
|
sc->elst_count = i; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVStreamContext *sc; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return AVERROR_INVALIDDATA; |
|
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; |
|
sc->timecode_track = avio_rb32(pb); |
|
return 0; |
|
} |
|
|
|
static int mov_read_av1c(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
|
|
if (atom.size < 4) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty AV1 Codec Configuration Box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* For now, propagate only the OBUs, if any. Once libavcodec is |
|
updated to handle isobmff style extradata this can be removed. */ |
|
avio_skip(pb, 4); |
|
|
|
if (atom.size == 4) |
|
return 0; |
|
|
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 4); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_vpcc(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int version, color_range, color_primaries, color_trc, color_space; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
|
|
if (atom.size < 5) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty VP Codec Configuration box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
version = avio_r8(pb); |
|
if (version != 1) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unsupported VP Codec Configuration box version %d\n", version); |
|
return 0; |
|
} |
|
avio_skip(pb, 3); /* flags */ |
|
|
|
avio_skip(pb, 2); /* profile + level */ |
|
color_range = avio_r8(pb); /* bitDepth, chromaSubsampling, videoFullRangeFlag */ |
|
color_primaries = avio_r8(pb); |
|
color_trc = avio_r8(pb); |
|
color_space = avio_r8(pb); |
|
if (avio_rb16(pb)) /* codecIntializationDataSize */ |
|
return AVERROR_INVALIDDATA; |
|
|
|
if (!av_color_primaries_name(color_primaries)) |
|
color_primaries = AVCOL_PRI_UNSPECIFIED; |
|
if (!av_color_transfer_name(color_trc)) |
|
color_trc = AVCOL_TRC_UNSPECIFIED; |
|
if (!av_color_space_name(color_space)) |
|
color_space = AVCOL_SPC_UNSPECIFIED; |
|
|
|
st->codecpar->color_range = (color_range & 1) ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG; |
|
st->codecpar->color_primaries = color_primaries; |
|
st->codecpar->color_trc = color_trc; |
|
st->codecpar->color_space = color_space; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_smdm(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVStreamContext *sc; |
|
int i, version; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return AVERROR_INVALIDDATA; |
|
|
|
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; |
|
|
|
if (atom.size < 5) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty Mastering Display Metadata box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
version = avio_r8(pb); |
|
if (version) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unsupported Mastering Display Metadata box version %d\n", version); |
|
return 0; |
|
} |
|
avio_skip(pb, 3); /* flags */ |
|
|
|
sc->mastering = av_mastering_display_metadata_alloc(); |
|
if (!sc->mastering) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < 3; i++) { |
|
sc->mastering->display_primaries[i][0] = av_make_q(avio_rb16(pb), 1 << 16); |
|
sc->mastering->display_primaries[i][1] = av_make_q(avio_rb16(pb), 1 << 16); |
|
} |
|
sc->mastering->white_point[0] = av_make_q(avio_rb16(pb), 1 << 16); |
|
sc->mastering->white_point[1] = av_make_q(avio_rb16(pb), 1 << 16); |
|
|
|
sc->mastering->max_luminance = av_make_q(avio_rb32(pb), 1 << 8); |
|
sc->mastering->min_luminance = av_make_q(avio_rb32(pb), 1 << 14); |
|
|
|
sc->mastering->has_primaries = 1; |
|
sc->mastering->has_luminance = 1; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_mdcv(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVStreamContext *sc; |
|
const int mapping[3] = {1, 2, 0}; |
|
const int chroma_den = 50000; |
|
const int luma_den = 10000; |
|
int i; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return AVERROR_INVALIDDATA; |
|
|
|
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; |
|
|
|
if (atom.size < 24) { |
|
av_log(c->fc, AV_LOG_ERROR, "Invalid Mastering Display Color Volume box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
sc->mastering = av_mastering_display_metadata_alloc(); |
|
if (!sc->mastering) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < 3; i++) { |
|
const int j = mapping[i]; |
|
sc->mastering->display_primaries[j][0] = av_make_q(avio_rb16(pb), chroma_den); |
|
sc->mastering->display_primaries[j][1] = av_make_q(avio_rb16(pb), chroma_den); |
|
} |
|
sc->mastering->white_point[0] = av_make_q(avio_rb16(pb), chroma_den); |
|
sc->mastering->white_point[1] = av_make_q(avio_rb16(pb), chroma_den); |
|
|
|
sc->mastering->max_luminance = av_make_q(avio_rb32(pb), luma_den); |
|
sc->mastering->min_luminance = av_make_q(avio_rb32(pb), luma_den); |
|
|
|
sc->mastering->has_luminance = 1; |
|
sc->mastering->has_primaries = 1; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_coll(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVStreamContext *sc; |
|
int version; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return AVERROR_INVALIDDATA; |
|
|
|
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; |
|
|
|
if (atom.size < 5) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
version = avio_r8(pb); |
|
if (version) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unsupported Content Light Level box version %d\n", version); |
|
return 0; |
|
} |
|
avio_skip(pb, 3); /* flags */ |
|
|
|
sc->coll = av_content_light_metadata_alloc(&sc->coll_size); |
|
if (!sc->coll) |
|
return AVERROR(ENOMEM); |
|
|
|
sc->coll->MaxCLL = avio_rb16(pb); |
|
sc->coll->MaxFALL = avio_rb16(pb); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_clli(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVStreamContext *sc; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return AVERROR_INVALIDDATA; |
|
|
|
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; |
|
|
|
if (atom.size < 4) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level Info box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
sc->coll = av_content_light_metadata_alloc(&sc->coll_size); |
|
if (!sc->coll) |
|
return AVERROR(ENOMEM); |
|
|
|
sc->coll->MaxCLL = avio_rb16(pb); |
|
sc->coll->MaxFALL = avio_rb16(pb); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_st3d(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
enum AVStereo3DType type; |
|
int mode; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
|
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
sc = st->priv_data; |
|
|
|
if (atom.size < 5) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty stereoscopic video box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
avio_skip(pb, 4); /* version + flags */ |
|
|
|
mode = avio_r8(pb); |
|
switch (mode) { |
|
case 0: |
|
type = AV_STEREO3D_2D; |
|
break; |
|
case 1: |
|
type = AV_STEREO3D_TOPBOTTOM; |
|
break; |
|
case 2: |
|
type = AV_STEREO3D_SIDEBYSIDE; |
|
break; |
|
default: |
|
av_log(c->fc, AV_LOG_WARNING, "Unknown st3d mode value %d\n", mode); |
|
return 0; |
|
} |
|
|
|
sc->stereo3d = av_stereo3d_alloc(); |
|
if (!sc->stereo3d) |
|
return AVERROR(ENOMEM); |
|
|
|
sc->stereo3d->type = type; |
|
return 0; |
|
} |
|
|
|
static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int size, version, layout; |
|
int32_t yaw, pitch, roll; |
|
uint32_t l = 0, t = 0, r = 0, b = 0; |
|
uint32_t tag, padding = 0; |
|
enum AVSphericalProjection projection; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
|
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
sc = st->priv_data; |
|
|
|
if (atom.size < 8) { |
|
av_log(c->fc, AV_LOG_ERROR, "Empty spherical video box\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
size = avio_rb32(pb); |
|
if (size <= 12 || size > atom.size) |
|
return AVERROR_INVALIDDATA; |
|
|
|
tag = avio_rl32(pb); |
|
if (tag != MKTAG('s','v','h','d')) { |
|
av_log(c->fc, AV_LOG_ERROR, "Missing spherical video header\n"); |
|
return 0; |
|
} |
|
version = avio_r8(pb); |
|
if (version != 0) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n", |
|
version); |
|
return 0; |
|
} |
|
avio_skip(pb, 3); /* flags */ |
|
avio_skip(pb, size - 12); /* metadata_source */ |
|
|
|
size = avio_rb32(pb); |
|
if (size > atom.size) |
|
return AVERROR_INVALIDDATA; |
|
|
|
tag = avio_rl32(pb); |
|
if (tag != MKTAG('p','r','o','j')) { |
|
av_log(c->fc, AV_LOG_ERROR, "Missing projection box\n"); |
|
return 0; |
|
} |
|
|
|
size = avio_rb32(pb); |
|
if (size > atom.size) |
|
return AVERROR_INVALIDDATA; |
|
|
|
tag = avio_rl32(pb); |
|
if (tag != MKTAG('p','r','h','d')) { |
|
av_log(c->fc, AV_LOG_ERROR, "Missing projection header box\n"); |
|
return 0; |
|
} |
|
version = avio_r8(pb); |
|
if (version != 0) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n", |
|
version); |
|
return 0; |
|
} |
|
avio_skip(pb, 3); /* flags */ |
|
|
|
/* 16.16 fixed point */ |
|
yaw = avio_rb32(pb); |
|
pitch = avio_rb32(pb); |
|
roll = avio_rb32(pb); |
|
|
|
size = avio_rb32(pb); |
|
if (size > atom.size) |
|
return AVERROR_INVALIDDATA; |
|
|
|
tag = avio_rl32(pb); |
|
version = avio_r8(pb); |
|
if (version != 0) { |
|
av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n", |
|
version); |
|
return 0; |
|
} |
|
avio_skip(pb, 3); /* flags */ |
|
switch (tag) { |
|
case MKTAG('c','b','m','p'): |
|
layout = avio_rb32(pb); |
|
if (layout) { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"Unsupported cubemap layout %d\n", layout); |
|
return 0; |
|
} |
|
projection = AV_SPHERICAL_CUBEMAP; |
|
padding = avio_rb32(pb); |
|
break; |
|
case MKTAG('e','q','u','i'): |
|
t = avio_rb32(pb); |
|
b = avio_rb32(pb); |
|
l = avio_rb32(pb); |
|
r = avio_rb32(pb); |
|
|
|
if (b >= UINT_MAX - t || r >= UINT_MAX - l) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"Invalid bounding rectangle coordinates " |
|
"%"PRIu32",%"PRIu32",%"PRIu32",%"PRIu32"\n", l, t, r, b); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (l || t || r || b) |
|
projection = AV_SPHERICAL_EQUIRECTANGULAR_TILE; |
|
else |
|
projection = AV_SPHERICAL_EQUIRECTANGULAR; |
|
break; |
|
default: |
|
av_log(c->fc, AV_LOG_ERROR, "Unknown projection type: %s\n", av_fourcc2str(tag)); |
|
return 0; |
|
} |
|
|
|
sc->spherical = av_spherical_alloc(&sc->spherical_size); |
|
if (!sc->spherical) |
|
return AVERROR(ENOMEM); |
|
|
|
sc->spherical->projection = projection; |
|
|
|
sc->spherical->yaw = yaw; |
|
sc->spherical->pitch = pitch; |
|
sc->spherical->roll = roll; |
|
|
|
sc->spherical->padding = padding; |
|
|
|
sc->spherical->bound_left = l; |
|
sc->spherical->bound_top = t; |
|
sc->spherical->bound_right = r; |
|
sc->spherical->bound_bottom = b; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_parse_uuid_spherical(MOVStreamContext *sc, AVIOContext *pb, size_t len) |
|
{ |
|
int ret = 0; |
|
uint8_t *buffer = av_malloc(len + 1); |
|
const char *val; |
|
|
|
if (!buffer) |
|
return AVERROR(ENOMEM); |
|
buffer[len] = '\0'; |
|
|
|
ret = ffio_read_size(pb, buffer, len); |
|
if (ret < 0) |
|
goto out; |
|
|
|
/* Check for mandatory keys and values, try to support XML as best-effort */ |
|
if (!sc->spherical && |
|
av_stristr(buffer, "<GSpherical:StitchingSoftware>") && |
|
(val = av_stristr(buffer, "<GSpherical:Spherical>")) && |
|
av_stristr(val, "true") && |
|
(val = av_stristr(buffer, "<GSpherical:Stitched>")) && |
|
av_stristr(val, "true") && |
|
(val = av_stristr(buffer, "<GSpherical:ProjectionType>")) && |
|
av_stristr(val, "equirectangular")) { |
|
sc->spherical = av_spherical_alloc(&sc->spherical_size); |
|
if (!sc->spherical) |
|
goto out; |
|
|
|
sc->spherical->projection = AV_SPHERICAL_EQUIRECTANGULAR; |
|
|
|
if (av_stristr(buffer, "<GSpherical:StereoMode>") && !sc->stereo3d) { |
|
enum AVStereo3DType mode; |
|
|
|
if (av_stristr(buffer, "left-right")) |
|
mode = AV_STEREO3D_SIDEBYSIDE; |
|
else if (av_stristr(buffer, "top-bottom")) |
|
mode = AV_STEREO3D_TOPBOTTOM; |
|
else |
|
mode = AV_STEREO3D_2D; |
|
|
|
sc->stereo3d = av_stereo3d_alloc(); |
|
if (!sc->stereo3d) |
|
goto out; |
|
|
|
sc->stereo3d->type = mode; |
|
} |
|
|
|
/* orientation */ |
|
val = av_stristr(buffer, "<GSpherical:InitialViewHeadingDegrees>"); |
|
if (val) |
|
sc->spherical->yaw = strtol(val, NULL, 10) * (1 << 16); |
|
val = av_stristr(buffer, "<GSpherical:InitialViewPitchDegrees>"); |
|
if (val) |
|
sc->spherical->pitch = strtol(val, NULL, 10) * (1 << 16); |
|
val = av_stristr(buffer, "<GSpherical:InitialViewRollDegrees>"); |
|
if (val) |
|
sc->spherical->roll = strtol(val, NULL, 10) * (1 << 16); |
|
} |
|
|
|
out: |
|
av_free(buffer); |
|
return ret; |
|
} |
|
|
|
static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int64_t ret; |
|
uint8_t uuid[16]; |
|
static const uint8_t uuid_isml_manifest[] = { |
|
0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd, |
|
0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66 |
|
}; |
|
static const uint8_t uuid_xmp[] = { |
|
0xbe, 0x7a, 0xcf, 0xcb, 0x97, 0xa9, 0x42, 0xe8, |
|
0x9c, 0x71, 0x99, 0x94, 0x91, 0xe3, 0xaf, 0xac |
|
}; |
|
static const uint8_t uuid_spherical[] = { |
|
0xff, 0xcc, 0x82, 0x63, 0xf8, 0x55, 0x4a, 0x93, |
|
0x88, 0x14, 0x58, 0x7a, 0x02, 0x52, 0x1f, 0xdd, |
|
}; |
|
|
|
if (atom.size < sizeof(uuid) || atom.size >= FFMIN(INT_MAX, SIZE_MAX)) |
|
return AVERROR_INVALIDDATA; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
sc = st->priv_data; |
|
|
|
ret = ffio_read_size(pb, uuid, sizeof(uuid)); |
|
if (ret < 0) |
|
return ret; |
|
if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) { |
|
uint8_t *buffer, *ptr; |
|
char *endptr; |
|
size_t len = atom.size - sizeof(uuid); |
|
|
|
if (len < 4) { |
|
return AVERROR_INVALIDDATA; |
|
} |
|
ret = avio_skip(pb, 4); // zeroes |
|
len -= 4; |
|
|
|
buffer = av_mallocz(len + 1); |
|
if (!buffer) { |
|
return AVERROR(ENOMEM); |
|
} |
|
ret = ffio_read_size(pb, buffer, len); |
|
if (ret < 0) { |
|
av_free(buffer); |
|
return ret; |
|
} |
|
|
|
ptr = buffer; |
|
while ((ptr = av_stristr(ptr, "systemBitrate=\""))) { |
|
ptr += sizeof("systemBitrate=\"") - 1; |
|
c->bitrates_count++; |
|
c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates)); |
|
if (!c->bitrates) { |
|
c->bitrates_count = 0; |
|
av_free(buffer); |
|
return AVERROR(ENOMEM); |
|
} |
|
errno = 0; |
|
ret = strtol(ptr, &endptr, 10); |
|
if (ret < 0 || errno || *endptr != '"') { |
|
c->bitrates[c->bitrates_count - 1] = 0; |
|
} else { |
|
c->bitrates[c->bitrates_count - 1] = ret; |
|
} |
|
} |
|
|
|
av_free(buffer); |
|
} else if (!memcmp(uuid, uuid_xmp, sizeof(uuid))) { |
|
uint8_t *buffer; |
|
size_t len = atom.size - sizeof(uuid); |
|
if (c->export_xmp) { |
|
buffer = av_mallocz(len + 1); |
|
if (!buffer) { |
|
return AVERROR(ENOMEM); |
|
} |
|
ret = ffio_read_size(pb, buffer, len); |
|
if (ret < 0) { |
|
av_free(buffer); |
|
return ret; |
|
} |
|
buffer[len] = '\0'; |
|
av_dict_set(&c->fc->metadata, "xmp", |
|
buffer, AV_DICT_DONT_STRDUP_VAL); |
|
} else { |
|
// skip all uuid atom, which makes it fast for long uuid-xmp file |
|
ret = avio_skip(pb, len); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} else if (!memcmp(uuid, uuid_spherical, sizeof(uuid))) { |
|
size_t len = atom.size - sizeof(uuid); |
|
ret = mov_parse_uuid_spherical(sc, pb, len); |
|
if (ret < 0) |
|
return ret; |
|
if (!sc->spherical) |
|
av_log(c->fc, AV_LOG_WARNING, "Invalid spherical metadata found\n"); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int ret; |
|
uint8_t content[16]; |
|
|
|
if (atom.size < 8) |
|
return 0; |
|
|
|
ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size)); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if ( !c->found_moov |
|
&& !c->found_mdat |
|
&& !memcmp(content, "Anevia\x1A\x1A", 8) |
|
&& c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) { |
|
c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_frma(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
uint32_t format = avio_rl32(pb); |
|
MOVStreamContext *sc; |
|
enum AVCodecID id; |
|
AVStream *st; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
sc = st->priv_data; |
|
|
|
switch (sc->format) |
|
{ |
|
case MKTAG('e','n','c','v'): // encrypted video |
|
case MKTAG('e','n','c','a'): // encrypted audio |
|
id = mov_codec_id(st, format); |
|
if (st->codecpar->codec_id != AV_CODEC_ID_NONE && |
|
st->codecpar->codec_id != id) { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"ignoring 'frma' atom of '%.4s', stream has codec id %d\n", |
|
(char*)&format, st->codecpar->codec_id); |
|
break; |
|
} |
|
|
|
st->codecpar->codec_id = id; |
|
sc->format = format; |
|
break; |
|
|
|
default: |
|
if (format != sc->format) { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"ignoring 'frma' atom of '%.4s', stream format is '%.4s'\n", |
|
(char*)&format, (char*)&sc->format); |
|
} |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Gets the current encryption info and associated current stream context. If |
|
* we are parsing a track fragment, this will return the specific encryption |
|
* info for this fragment; otherwise this will return the global encryption |
|
* info for the current stream. |
|
*/ |
|
static int get_current_encryption_info(MOVContext *c, MOVEncryptionIndex **encryption_index, MOVStreamContext **sc) |
|
{ |
|
MOVFragmentStreamInfo *frag_stream_info; |
|
AVStream *st; |
|
int i; |
|
|
|
frag_stream_info = get_current_frag_stream_info(&c->frag_index); |
|
if (frag_stream_info) { |
|
for (i = 0; i < c->fc->nb_streams; i++) { |
|
if (c->fc->streams[i]->id == frag_stream_info->id) { |
|
st = c->fc->streams[i]; |
|
break; |
|
} |
|
} |
|
if (i == c->fc->nb_streams) |
|
return 0; |
|
*sc = st->priv_data; |
|
|
|
if (!frag_stream_info->encryption_index) { |
|
// If this stream isn't encrypted, don't create the index. |
|
if (!(*sc)->cenc.default_encrypted_sample) |
|
return 0; |
|
frag_stream_info->encryption_index = av_mallocz(sizeof(*frag_stream_info->encryption_index)); |
|
if (!frag_stream_info->encryption_index) |
|
return AVERROR(ENOMEM); |
|
} |
|
*encryption_index = frag_stream_info->encryption_index; |
|
return 1; |
|
} else { |
|
// No current track fragment, using stream level encryption info. |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams - 1]; |
|
*sc = st->priv_data; |
|
|
|
if (!(*sc)->cenc.encryption_index) { |
|
// If this stream isn't encrypted, don't create the index. |
|
if (!(*sc)->cenc.default_encrypted_sample) |
|
return 0; |
|
(*sc)->cenc.encryption_index = av_mallocz(sizeof(*frag_stream_info->encryption_index)); |
|
if (!(*sc)->cenc.encryption_index) |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
*encryption_index = (*sc)->cenc.encryption_index; |
|
return 1; |
|
} |
|
} |
|
|
|
static int mov_read_sample_encryption_info(MOVContext *c, AVIOContext *pb, MOVStreamContext *sc, AVEncryptionInfo **sample, int use_subsamples) |
|
{ |
|
int i, ret; |
|
unsigned int subsample_count; |
|
AVSubsampleEncryptionInfo *subsamples; |
|
|
|
if (!sc->cenc.default_encrypted_sample) { |
|
av_log(c->fc, AV_LOG_ERROR, "Missing schm or tenc\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
*sample = av_encryption_info_clone(sc->cenc.default_encrypted_sample); |
|
if (!*sample) |
|
return AVERROR(ENOMEM); |
|
|
|
if (sc->cenc.per_sample_iv_size != 0) { |
|
if ((ret = ffio_read_size(pb, (*sample)->iv, sc->cenc.per_sample_iv_size)) < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "failed to read the initialization vector\n"); |
|
av_encryption_info_free(*sample); |
|
*sample = NULL; |
|
return ret; |
|
} |
|
} |
|
|
|
if (use_subsamples) { |
|
subsample_count = avio_rb16(pb); |
|
av_free((*sample)->subsamples); |
|
(*sample)->subsamples = av_mallocz_array(subsample_count, sizeof(*subsamples)); |
|
if (!(*sample)->subsamples) { |
|
av_encryption_info_free(*sample); |
|
*sample = NULL; |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
for (i = 0; i < subsample_count && !pb->eof_reached; i++) { |
|
(*sample)->subsamples[i].bytes_of_clear_data = avio_rb16(pb); |
|
(*sample)->subsamples[i].bytes_of_protected_data = avio_rb32(pb); |
|
} |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_ERROR, "hit EOF while reading sub-sample encryption info\n"); |
|
av_encryption_info_free(*sample); |
|
*sample = NULL; |
|
return AVERROR_INVALIDDATA; |
|
} |
|
(*sample)->subsample_count = subsample_count; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_senc(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVEncryptionInfo **encrypted_samples; |
|
MOVEncryptionIndex *encryption_index; |
|
MOVStreamContext *sc; |
|
int use_subsamples, ret; |
|
unsigned int sample_count, i, alloc_size = 0; |
|
|
|
ret = get_current_encryption_info(c, &encryption_index, &sc); |
|
if (ret != 1) |
|
return ret; |
|
|
|
if (encryption_index->nb_encrypted_samples) { |
|
// This can happen if we have both saio/saiz and senc atoms. |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in senc\n"); |
|
return 0; |
|
} |
|
|
|
avio_r8(pb); /* version */ |
|
use_subsamples = avio_rb24(pb) & 0x02; /* flags */ |
|
|
|
sample_count = avio_rb32(pb); |
|
if (sample_count >= INT_MAX / sizeof(*encrypted_samples)) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < sample_count; i++) { |
|
unsigned int min_samples = FFMIN(FFMAX(i + 1, 1024 * 1024), sample_count); |
|
encrypted_samples = av_fast_realloc(encryption_index->encrypted_samples, &alloc_size, |
|
min_samples * sizeof(*encrypted_samples)); |
|
if (encrypted_samples) { |
|
encryption_index->encrypted_samples = encrypted_samples; |
|
|
|
ret = mov_read_sample_encryption_info( |
|
c, pb, sc, &encryption_index->encrypted_samples[i], use_subsamples); |
|
} else { |
|
ret = AVERROR(ENOMEM); |
|
} |
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading senc\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (ret < 0) { |
|
for (; i > 0; i--) |
|
av_encryption_info_free(encryption_index->encrypted_samples[i - 1]); |
|
av_freep(&encryption_index->encrypted_samples); |
|
return ret; |
|
} |
|
} |
|
encryption_index->nb_encrypted_samples = sample_count; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_parse_auxiliary_info(MOVContext *c, MOVStreamContext *sc, AVIOContext *pb, MOVEncryptionIndex *encryption_index) |
|
{ |
|
AVEncryptionInfo **sample, **encrypted_samples; |
|
int64_t prev_pos; |
|
size_t sample_count, sample_info_size, i; |
|
int ret = 0; |
|
unsigned int alloc_size = 0; |
|
|
|
if (encryption_index->nb_encrypted_samples) |
|
return 0; |
|
sample_count = encryption_index->auxiliary_info_sample_count; |
|
if (encryption_index->auxiliary_offsets_count != 1) { |
|
av_log(c->fc, AV_LOG_ERROR, "Multiple auxiliary info chunks are not supported\n"); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
if (sample_count >= INT_MAX / sizeof(*encrypted_samples)) |
|
return AVERROR(ENOMEM); |
|
|
|
prev_pos = avio_tell(pb); |
|
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || |
|
avio_seek(pb, encryption_index->auxiliary_offsets[0], SEEK_SET) != encryption_index->auxiliary_offsets[0]) { |
|
av_log(c->fc, AV_LOG_INFO, "Failed to seek for auxiliary info, will only parse senc atoms for encryption info\n"); |
|
goto finish; |
|
} |
|
|
|
for (i = 0; i < sample_count && !pb->eof_reached; i++) { |
|
unsigned int min_samples = FFMIN(FFMAX(i + 1, 1024 * 1024), sample_count); |
|
encrypted_samples = av_fast_realloc(encryption_index->encrypted_samples, &alloc_size, |
|
min_samples * sizeof(*encrypted_samples)); |
|
if (!encrypted_samples) { |
|
ret = AVERROR(ENOMEM); |
|
goto finish; |
|
} |
|
encryption_index->encrypted_samples = encrypted_samples; |
|
|
|
sample = &encryption_index->encrypted_samples[i]; |
|
sample_info_size = encryption_index->auxiliary_info_default_size |
|
? encryption_index->auxiliary_info_default_size |
|
: encryption_index->auxiliary_info_sizes[i]; |
|
|
|
ret = mov_read_sample_encryption_info(c, pb, sc, sample, sample_info_size > sc->cenc.per_sample_iv_size); |
|
if (ret < 0) |
|
goto finish; |
|
} |
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading auxiliary info\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
} else { |
|
encryption_index->nb_encrypted_samples = sample_count; |
|
} |
|
|
|
finish: |
|
avio_seek(pb, prev_pos, SEEK_SET); |
|
if (ret < 0) { |
|
for (; i > 0; i--) { |
|
av_encryption_info_free(encryption_index->encrypted_samples[i - 1]); |
|
} |
|
av_freep(&encryption_index->encrypted_samples); |
|
} |
|
return ret; |
|
} |
|
|
|
/** |
|
* Tries to read the given number of bytes from the stream and puts it in a |
|
* newly allocated buffer. This reads in small chunks to avoid allocating large |
|
* memory if the file contains an invalid/malicious size value. |
|
*/ |
|
static int mov_try_read_block(AVIOContext *pb, size_t size, uint8_t **data) |
|
{ |
|
const unsigned int block_size = 1024 * 1024; |
|
uint8_t *buffer = NULL; |
|
unsigned int alloc_size = 0, offset = 0; |
|
while (offset < size) { |
|
unsigned int new_size = |
|
alloc_size >= INT_MAX - block_size ? INT_MAX : alloc_size + block_size; |
|
uint8_t *new_buffer = av_fast_realloc(buffer, &alloc_size, new_size); |
|
unsigned int to_read = FFMIN(size, alloc_size) - offset; |
|
if (!new_buffer) { |
|
av_free(buffer); |
|
return AVERROR(ENOMEM); |
|
} |
|
buffer = new_buffer; |
|
|
|
if (avio_read(pb, buffer + offset, to_read) != to_read) { |
|
av_free(buffer); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
offset += to_read; |
|
} |
|
|
|
*data = buffer; |
|
return 0; |
|
} |
|
|
|
static int mov_read_saiz(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
MOVEncryptionIndex *encryption_index; |
|
MOVStreamContext *sc; |
|
int ret; |
|
unsigned int sample_count, aux_info_type, aux_info_param; |
|
|
|
ret = get_current_encryption_info(c, &encryption_index, &sc); |
|
if (ret != 1) |
|
return ret; |
|
|
|
if (encryption_index->nb_encrypted_samples) { |
|
// This can happen if we have both saio/saiz and senc atoms. |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in saiz\n"); |
|
return 0; |
|
} |
|
|
|
if (encryption_index->auxiliary_info_sample_count) { |
|
av_log(c->fc, AV_LOG_ERROR, "Duplicate saiz atom\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
avio_r8(pb); /* version */ |
|
if (avio_rb24(pb) & 0x01) { /* flags */ |
|
aux_info_type = avio_rb32(pb); |
|
aux_info_param = avio_rb32(pb); |
|
if (sc->cenc.default_encrypted_sample) { |
|
if (aux_info_type != sc->cenc.default_encrypted_sample->scheme) { |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring saiz box with non-zero aux_info_type\n"); |
|
return 0; |
|
} |
|
if (aux_info_param != 0) { |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring saiz box with non-zero aux_info_type_parameter\n"); |
|
return 0; |
|
} |
|
} else { |
|
// Didn't see 'schm' or 'tenc', so this isn't encrypted. |
|
if ((aux_info_type == MKBETAG('c','e','n','c') || |
|
aux_info_type == MKBETAG('c','e','n','s') || |
|
aux_info_type == MKBETAG('c','b','c','1') || |
|
aux_info_type == MKBETAG('c','b','c','s')) && |
|
aux_info_param == 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Saw encrypted saiz without schm/tenc\n"); |
|
return AVERROR_INVALIDDATA; |
|
} else { |
|
return 0; |
|
} |
|
} |
|
} else if (!sc->cenc.default_encrypted_sample) { |
|
// Didn't see 'schm' or 'tenc', so this isn't encrypted. |
|
return 0; |
|
} |
|
|
|
encryption_index->auxiliary_info_default_size = avio_r8(pb); |
|
sample_count = avio_rb32(pb); |
|
encryption_index->auxiliary_info_sample_count = sample_count; |
|
|
|
if (encryption_index->auxiliary_info_default_size == 0) { |
|
ret = mov_try_read_block(pb, sample_count, &encryption_index->auxiliary_info_sizes); |
|
if (ret < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Failed to read the auxiliary info\n"); |
|
return ret; |
|
} |
|
} |
|
|
|
if (encryption_index->auxiliary_offsets_count) { |
|
return mov_parse_auxiliary_info(c, sc, pb, encryption_index); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_saio(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
uint64_t *auxiliary_offsets; |
|
MOVEncryptionIndex *encryption_index; |
|
MOVStreamContext *sc; |
|
int i, ret; |
|
unsigned int version, entry_count, aux_info_type, aux_info_param; |
|
unsigned int alloc_size = 0; |
|
|
|
ret = get_current_encryption_info(c, &encryption_index, &sc); |
|
if (ret != 1) |
|
return ret; |
|
|
|
if (encryption_index->nb_encrypted_samples) { |
|
// This can happen if we have both saio/saiz and senc atoms. |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in saio\n"); |
|
return 0; |
|
} |
|
|
|
if (encryption_index->auxiliary_offsets_count) { |
|
av_log(c->fc, AV_LOG_ERROR, "Duplicate saio atom\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
version = avio_r8(pb); /* version */ |
|
if (avio_rb24(pb) & 0x01) { /* flags */ |
|
aux_info_type = avio_rb32(pb); |
|
aux_info_param = avio_rb32(pb); |
|
if (sc->cenc.default_encrypted_sample) { |
|
if (aux_info_type != sc->cenc.default_encrypted_sample->scheme) { |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring saio box with non-zero aux_info_type\n"); |
|
return 0; |
|
} |
|
if (aux_info_param != 0) { |
|
av_log(c->fc, AV_LOG_DEBUG, "Ignoring saio box with non-zero aux_info_type_parameter\n"); |
|
return 0; |
|
} |
|
} else { |
|
// Didn't see 'schm' or 'tenc', so this isn't encrypted. |
|
if ((aux_info_type == MKBETAG('c','e','n','c') || |
|
aux_info_type == MKBETAG('c','e','n','s') || |
|
aux_info_type == MKBETAG('c','b','c','1') || |
|
aux_info_type == MKBETAG('c','b','c','s')) && |
|
aux_info_param == 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Saw encrypted saio without schm/tenc\n"); |
|
return AVERROR_INVALIDDATA; |
|
} else { |
|
return 0; |
|
} |
|
} |
|
} else if (!sc->cenc.default_encrypted_sample) { |
|
// Didn't see 'schm' or 'tenc', so this isn't encrypted. |
|
return 0; |
|
} |
|
|
|
entry_count = avio_rb32(pb); |
|
if (entry_count >= INT_MAX / sizeof(*auxiliary_offsets)) |
|
return AVERROR(ENOMEM); |
|
|
|
for (i = 0; i < entry_count && !pb->eof_reached; i++) { |
|
unsigned int min_offsets = FFMIN(FFMAX(i + 1, 1024), entry_count); |
|
auxiliary_offsets = av_fast_realloc( |
|
encryption_index->auxiliary_offsets, &alloc_size, |
|
min_offsets * sizeof(*auxiliary_offsets)); |
|
if (!auxiliary_offsets) { |
|
av_freep(&encryption_index->auxiliary_offsets); |
|
return AVERROR(ENOMEM); |
|
} |
|
encryption_index->auxiliary_offsets = auxiliary_offsets; |
|
|
|
if (version == 0) { |
|
encryption_index->auxiliary_offsets[i] = avio_rb32(pb); |
|
} else { |
|
encryption_index->auxiliary_offsets[i] = avio_rb64(pb); |
|
} |
|
if (c->frag_index.current >= 0) { |
|
encryption_index->auxiliary_offsets[i] += c->fragment.base_data_offset; |
|
} |
|
} |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading saio\n"); |
|
av_freep(&encryption_index->auxiliary_offsets); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
encryption_index->auxiliary_offsets_count = entry_count; |
|
|
|
if (encryption_index->auxiliary_info_sample_count) { |
|
return mov_parse_auxiliary_info(c, sc, pb, encryption_index); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_pssh(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVEncryptionInitInfo *info, *old_init_info; |
|
uint8_t **key_ids; |
|
AVStream *st; |
|
uint8_t *side_data, *extra_data, *old_side_data; |
|
size_t side_data_size; |
|
int ret = 0, old_side_data_size; |
|
unsigned int version, kid_count, extra_data_size, alloc_size = 0; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
version = avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
info = av_encryption_init_info_alloc(/* system_id_size */ 16, /* num_key_ids */ 0, |
|
/* key_id_size */ 16, /* data_size */ 0); |
|
if (!info) |
|
return AVERROR(ENOMEM); |
|
|
|
if ((ret = ffio_read_size(pb, info->system_id, 16)) < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Failed to read the system id\n"); |
|
goto finish; |
|
} |
|
|
|
if (version > 0) { |
|
kid_count = avio_rb32(pb); |
|
if (kid_count >= INT_MAX / sizeof(*key_ids)) { |
|
ret = AVERROR(ENOMEM); |
|
goto finish; |
|
} |
|
|
|
for (unsigned int i = 0; i < kid_count && !pb->eof_reached; i++) { |
|
unsigned int min_kid_count = FFMIN(FFMAX(i + 1, 1024), kid_count); |
|
key_ids = av_fast_realloc(info->key_ids, &alloc_size, |
|
min_kid_count * sizeof(*key_ids)); |
|
if (!key_ids) { |
|
ret = AVERROR(ENOMEM); |
|
goto finish; |
|
} |
|
info->key_ids = key_ids; |
|
|
|
info->key_ids[i] = av_mallocz(16); |
|
if (!info->key_ids[i]) { |
|
ret = AVERROR(ENOMEM); |
|
goto finish; |
|
} |
|
info->num_key_ids = i + 1; |
|
|
|
if ((ret = ffio_read_size(pb, info->key_ids[i], 16)) < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Failed to read the key id\n"); |
|
goto finish; |
|
} |
|
} |
|
|
|
if (pb->eof_reached) { |
|
av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading pssh\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto finish; |
|
} |
|
} |
|
|
|
extra_data_size = avio_rb32(pb); |
|
ret = mov_try_read_block(pb, extra_data_size, &extra_data); |
|
if (ret < 0) |
|
goto finish; |
|
|
|
av_freep(&info->data); // malloc(0) may still allocate something. |
|
info->data = extra_data; |
|
info->data_size = extra_data_size; |
|
|
|
// If there is existing initialization data, append to the list. |
|
old_side_data = av_stream_get_side_data(st, AV_PKT_DATA_ENCRYPTION_INIT_INFO, &old_side_data_size); |
|
if (old_side_data) { |
|
old_init_info = av_encryption_init_info_get_side_data(old_side_data, old_side_data_size); |
|
if (old_init_info) { |
|
// Append to the end of the list. |
|
for (AVEncryptionInitInfo *cur = old_init_info;; cur = cur->next) { |
|
if (!cur->next) { |
|
cur->next = info; |
|
break; |
|
} |
|
} |
|
info = old_init_info; |
|
} else { |
|
// Assume existing side-data will be valid, so the only error we could get is OOM. |
|
ret = AVERROR(ENOMEM); |
|
goto finish; |
|
} |
|
} |
|
|
|
side_data = av_encryption_init_info_add_side_data(info, &side_data_size); |
|
if (!side_data) { |
|
ret = AVERROR(ENOMEM); |
|
goto finish; |
|
} |
|
ret = av_stream_add_side_data(st, AV_PKT_DATA_ENCRYPTION_INIT_INFO, |
|
side_data, side_data_size); |
|
if (ret < 0) |
|
av_free(side_data); |
|
|
|
finish: |
|
av_encryption_init_info_free(info); |
|
return ret; |
|
} |
|
|
|
static int mov_read_schm(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
if (sc->pseudo_stream_id != 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "schm boxes are only supported in first sample descriptor\n"); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
|
|
if (atom.size < 8) |
|
return AVERROR_INVALIDDATA; |
|
|
|
avio_rb32(pb); /* version and flags */ |
|
|
|
if (!sc->cenc.default_encrypted_sample) { |
|
sc->cenc.default_encrypted_sample = av_encryption_info_alloc(0, 16, 16); |
|
if (!sc->cenc.default_encrypted_sample) { |
|
return AVERROR(ENOMEM); |
|
} |
|
} |
|
|
|
sc->cenc.default_encrypted_sample->scheme = avio_rb32(pb); |
|
return 0; |
|
} |
|
|
|
static int mov_read_tenc(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
unsigned int version, pattern, is_protected, iv_size; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
sc = st->priv_data; |
|
|
|
if (sc->pseudo_stream_id != 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "tenc atom are only supported in first sample descriptor\n"); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
|
|
if (!sc->cenc.default_encrypted_sample) { |
|
sc->cenc.default_encrypted_sample = av_encryption_info_alloc(0, 16, 16); |
|
if (!sc->cenc.default_encrypted_sample) { |
|
return AVERROR(ENOMEM); |
|
} |
|
} |
|
|
|
if (atom.size < 20) |
|
return AVERROR_INVALIDDATA; |
|
|
|
version = avio_r8(pb); /* version */ |
|
avio_rb24(pb); /* flags */ |
|
|
|
avio_r8(pb); /* reserved */ |
|
pattern = avio_r8(pb); |
|
|
|
if (version > 0) { |
|
sc->cenc.default_encrypted_sample->crypt_byte_block = pattern >> 4; |
|
sc->cenc.default_encrypted_sample->skip_byte_block = pattern & 0xf; |
|
} |
|
|
|
is_protected = avio_r8(pb); |
|
if (is_protected && !sc->cenc.encryption_index) { |
|
// The whole stream should be by-default encrypted. |
|
sc->cenc.encryption_index = av_mallocz(sizeof(MOVEncryptionIndex)); |
|
if (!sc->cenc.encryption_index) |
|
return AVERROR(ENOMEM); |
|
} |
|
sc->cenc.per_sample_iv_size = avio_r8(pb); |
|
if (sc->cenc.per_sample_iv_size != 0 && sc->cenc.per_sample_iv_size != 8 && |
|
sc->cenc.per_sample_iv_size != 16) { |
|
av_log(c->fc, AV_LOG_ERROR, "invalid per-sample IV size value\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
if (avio_read(pb, sc->cenc.default_encrypted_sample->key_id, 16) != 16) { |
|
av_log(c->fc, AV_LOG_ERROR, "failed to read the default key ID\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (is_protected && !sc->cenc.per_sample_iv_size) { |
|
iv_size = avio_r8(pb); |
|
if (iv_size != 8 && iv_size != 16) { |
|
av_log(c->fc, AV_LOG_ERROR, "invalid default_constant_IV_size in tenc atom\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (avio_read(pb, sc->cenc.default_encrypted_sample->iv, iv_size) != iv_size) { |
|
av_log(c->fc, AV_LOG_ERROR, "failed to read the default IV\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_dfla(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
int last, type, size, ret; |
|
uint8_t buf[4]; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((uint64_t)atom.size > (1<<30) || atom.size < 42) |
|
return AVERROR_INVALIDDATA; |
|
|
|
/* Check FlacSpecificBox version. */ |
|
if (avio_r8(pb) != 0) |
|
return AVERROR_INVALIDDATA; |
|
|
|
avio_rb24(pb); /* Flags */ |
|
|
|
avio_read(pb, buf, sizeof(buf)); |
|
flac_parse_block_header(buf, &last, &type, &size); |
|
|
|
if (type != FLAC_METADATA_TYPE_STREAMINFO || size != FLAC_STREAMINFO_SIZE) { |
|
av_log(c->fc, AV_LOG_ERROR, "STREAMINFO must be first FLACMetadataBlock\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
ret = ff_get_extradata(c->fc, st->codecpar, pb, size); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (!last) |
|
av_log(c->fc, AV_LOG_WARNING, "non-STREAMINFO FLACMetadataBlock(s) ignored\n"); |
|
|
|
return 0; |
|
} |
|
|
|
static int cenc_decrypt(MOVContext *c, MOVStreamContext *sc, AVEncryptionInfo *sample, uint8_t *input, int size) |
|
{ |
|
int i, ret; |
|
|
|
if (sample->scheme != MKBETAG('c','e','n','c') || sample->crypt_byte_block != 0 || sample->skip_byte_block != 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "Only the 'cenc' encryption scheme is supported\n"); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
|
|
if (!sc->cenc.aes_ctr) { |
|
/* initialize the cipher */ |
|
sc->cenc.aes_ctr = av_aes_ctr_alloc(); |
|
if (!sc->cenc.aes_ctr) { |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
ret = av_aes_ctr_init(sc->cenc.aes_ctr, c->decryption_key); |
|
if (ret < 0) { |
|
return ret; |
|
} |
|
} |
|
|
|
av_aes_ctr_set_full_iv(sc->cenc.aes_ctr, sample->iv); |
|
|
|
if (!sample->subsample_count) { |
|
/* decrypt the whole packet */ |
|
av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, size); |
|
return 0; |
|
} |
|
|
|
for (i = 0; i < sample->subsample_count; i++) { |
|
if (sample->subsamples[i].bytes_of_clear_data + sample->subsamples[i].bytes_of_protected_data > size) { |
|
av_log(c->fc, AV_LOG_ERROR, "subsample size exceeds the packet size left\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* skip the clear bytes */ |
|
input += sample->subsamples[i].bytes_of_clear_data; |
|
size -= sample->subsamples[i].bytes_of_clear_data; |
|
|
|
/* decrypt the encrypted bytes */ |
|
av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, sample->subsamples[i].bytes_of_protected_data); |
|
input += sample->subsamples[i].bytes_of_protected_data; |
|
size -= sample->subsamples[i].bytes_of_protected_data; |
|
} |
|
|
|
if (size > 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "leftover packet bytes after subsample processing\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int cenc_filter(MOVContext *mov, AVStream* st, MOVStreamContext *sc, AVPacket *pkt, int current_index) |
|
{ |
|
MOVFragmentStreamInfo *frag_stream_info; |
|
MOVEncryptionIndex *encryption_index; |
|
AVEncryptionInfo *encrypted_sample; |
|
int encrypted_index, ret; |
|
|
|
frag_stream_info = get_frag_stream_info(&mov->frag_index, mov->frag_index.current, st->id); |
|
encrypted_index = current_index; |
|
encryption_index = NULL; |
|
if (frag_stream_info) { |
|
// Note this only supports encryption info in the first sample descriptor. |
|
if (mov->fragment.stsd_id == 1) { |
|
if (frag_stream_info->encryption_index) { |
|
encrypted_index = current_index - frag_stream_info->index_entry; |
|
encryption_index = frag_stream_info->encryption_index; |
|
} else { |
|
encryption_index = sc->cenc.encryption_index; |
|
} |
|
} |
|
} else { |
|
encryption_index = sc->cenc.encryption_index; |
|
} |
|
|
|
if (encryption_index) { |
|
if (encryption_index->auxiliary_info_sample_count && |
|
!encryption_index->nb_encrypted_samples) { |
|
av_log(mov->fc, AV_LOG_ERROR, "saiz atom found without saio\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
if (encryption_index->auxiliary_offsets_count && |
|
!encryption_index->nb_encrypted_samples) { |
|
av_log(mov->fc, AV_LOG_ERROR, "saio atom found without saiz\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (!encryption_index->nb_encrypted_samples) { |
|
// Full-sample encryption with default settings. |
|
encrypted_sample = sc->cenc.default_encrypted_sample; |
|
} else if (encrypted_index >= 0 && encrypted_index < encryption_index->nb_encrypted_samples) { |
|
// Per-sample setting override. |
|
encrypted_sample = encryption_index->encrypted_samples[encrypted_index]; |
|
} else { |
|
av_log(mov->fc, AV_LOG_ERROR, "Incorrect number of samples in encryption info\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (mov->decryption_key) { |
|
return cenc_decrypt(mov, sc, encrypted_sample, pkt->data, pkt->size); |
|
} else { |
|
size_t size; |
|
uint8_t *side_data = av_encryption_info_add_side_data(encrypted_sample, &size); |
|
if (!side_data) |
|
return AVERROR(ENOMEM); |
|
ret = av_packet_add_side_data(pkt, AV_PKT_DATA_ENCRYPTION_INFO, side_data, size); |
|
if (ret < 0) |
|
av_free(side_data); |
|
return ret; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_dops(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
const int OPUS_SEEK_PREROLL_MS = 80; |
|
int ret; |
|
AVStream *st; |
|
size_t size; |
|
uint16_t pre_skip; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((uint64_t)atom.size > (1<<30) || atom.size < 11) |
|
return AVERROR_INVALIDDATA; |
|
|
|
/* Check OpusSpecificBox version. */ |
|
if (avio_r8(pb) != 0) { |
|
av_log(c->fc, AV_LOG_ERROR, "unsupported OpusSpecificBox version\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* OpusSpecificBox size plus magic for Ogg OpusHead header. */ |
|
size = atom.size + 8; |
|
|
|
if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0) |
|
return ret; |
|
|
|
AV_WL32(st->codecpar->extradata, MKTAG('O','p','u','s')); |
|
AV_WL32(st->codecpar->extradata + 4, MKTAG('H','e','a','d')); |
|
AV_WB8(st->codecpar->extradata + 8, 1); /* OpusHead version */ |
|
avio_read(pb, st->codecpar->extradata + 9, size - 9); |
|
|
|
/* OpusSpecificBox is stored in big-endian, but OpusHead is |
|
little-endian; aside from the preceeding magic and version they're |
|
otherwise currently identical. Data after output gain at offset 16 |
|
doesn't need to be bytewapped. */ |
|
pre_skip = AV_RB16(st->codecpar->extradata + 10); |
|
AV_WL16(st->codecpar->extradata + 10, pre_skip); |
|
AV_WL32(st->codecpar->extradata + 12, AV_RB32(st->codecpar->extradata + 12)); |
|
AV_WL16(st->codecpar->extradata + 16, AV_RB16(st->codecpar->extradata + 16)); |
|
|
|
st->codecpar->initial_padding = pre_skip; |
|
st->codecpar->seek_preroll = av_rescale_q(OPUS_SEEK_PREROLL_MS, |
|
(AVRational){1, 1000}, |
|
(AVRational){1, 48000}); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_dmlp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
unsigned format_info; |
|
int channel_assignment, channel_assignment1, channel_assignment2; |
|
int ratebits; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if (atom.size < 10) |
|
return AVERROR_INVALIDDATA; |
|
|
|
format_info = avio_rb32(pb); |
|
|
|
ratebits = (format_info >> 28) & 0xF; |
|
channel_assignment1 = (format_info >> 15) & 0x1F; |
|
channel_assignment2 = format_info & 0x1FFF; |
|
if (channel_assignment2) |
|
channel_assignment = channel_assignment2; |
|
else |
|
channel_assignment = channel_assignment1; |
|
|
|
st->codecpar->frame_size = 40 << (ratebits & 0x7); |
|
st->codecpar->sample_rate = mlp_samplerate(ratebits); |
|
st->codecpar->channels = truehd_channels(channel_assignment); |
|
st->codecpar->channel_layout = truehd_layout(channel_assignment); |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_dvcc_dvvc(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
AVStream *st; |
|
uint32_t buf; |
|
AVDOVIDecoderConfigurationRecord *dovi; |
|
size_t dovi_size; |
|
int ret; |
|
|
|
if (c->fc->nb_streams < 1) |
|
return 0; |
|
st = c->fc->streams[c->fc->nb_streams-1]; |
|
|
|
if ((uint64_t)atom.size > (1<<30) || atom.size < 4) |
|
return AVERROR_INVALIDDATA; |
|
|
|
dovi = av_dovi_alloc(&dovi_size); |
|
if (!dovi) |
|
return AVERROR(ENOMEM); |
|
|
|
dovi->dv_version_major = avio_r8(pb); |
|
dovi->dv_version_minor = avio_r8(pb); |
|
|
|
buf = avio_rb16(pb); |
|
dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits |
|
dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits |
|
dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit |
|
dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit |
|
dovi->bl_present_flag = buf & 0x01; // 1 bit |
|
if (atom.size >= 24) { // 4 + 4 + 4 * 4 |
|
buf = avio_r8(pb); |
|
dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits |
|
} else { |
|
// 0 stands for None |
|
// Dolby Vision V1.2.93 profiles and levels |
|
dovi->dv_bl_signal_compatibility_id = 0; |
|
} |
|
|
|
ret = av_stream_add_side_data(st, AV_PKT_DATA_DOVI_CONF, |
|
(uint8_t *)dovi, dovi_size); |
|
if (ret < 0) { |
|
av_free(dovi); |
|
return ret; |
|
} |
|
|
|
av_log(c, AV_LOG_TRACE, "DOVI in dvcC/dvvC box, version: %d.%d, profile: %d, level: %d, " |
|
"rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n", |
|
dovi->dv_version_major, dovi->dv_version_minor, |
|
dovi->dv_profile, dovi->dv_level, |
|
dovi->rpu_present_flag, |
|
dovi->el_present_flag, |
|
dovi->bl_present_flag, |
|
dovi->dv_bl_signal_compatibility_id |
|
); |
|
|
|
return 0; |
|
} |
|
|
|
static const MOVParseTableEntry mov_default_parse_table[] = { |
|
{ MKTAG('A','C','L','R'), mov_read_aclr }, |
|
{ MKTAG('A','P','R','G'), mov_read_avid }, |
|
{ MKTAG('A','A','L','P'), mov_read_avid }, |
|
{ MKTAG('A','R','E','S'), mov_read_ares }, |
|
{ MKTAG('a','v','s','s'), mov_read_avss }, |
|
{ MKTAG('a','v','1','C'), mov_read_av1c }, |
|
{ MKTAG('c','h','p','l'), mov_read_chpl }, |
|
{ MKTAG('c','o','6','4'), mov_read_stco }, |
|
{ MKTAG('c','o','l','r'), mov_read_colr }, |
|
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */ |
|
{ MKTAG('d','i','n','f'), mov_read_default }, |
|
{ MKTAG('D','p','x','E'), mov_read_dpxe }, |
|
{ MKTAG('d','r','e','f'), mov_read_dref }, |
|
{ MKTAG('e','d','t','s'), mov_read_default }, |
|
{ MKTAG('e','l','s','t'), mov_read_elst }, |
|
{ MKTAG('e','n','d','a'), mov_read_enda }, |
|
{ MKTAG('f','i','e','l'), mov_read_fiel }, |
|
{ MKTAG('a','d','r','m'), mov_read_adrm }, |
|
{ MKTAG('f','t','y','p'), mov_read_ftyp }, |
|
{ MKTAG('g','l','b','l'), mov_read_glbl }, |
|
{ MKTAG('h','d','l','r'), mov_read_hdlr }, |
|
{ MKTAG('i','l','s','t'), mov_read_ilst }, |
|
{ MKTAG('j','p','2','h'), mov_read_jp2h }, |
|
{ MKTAG('m','d','a','t'), mov_read_mdat }, |
|
{ MKTAG('m','d','h','d'), mov_read_mdhd }, |
|
{ MKTAG('m','d','i','a'), mov_read_default }, |
|
{ MKTAG('m','e','t','a'), mov_read_meta }, |
|
{ MKTAG('m','i','n','f'), mov_read_default }, |
|
{ MKTAG('m','o','o','f'), mov_read_moof }, |
|
{ MKTAG('m','o','o','v'), mov_read_moov }, |
|
{ MKTAG('m','v','e','x'), mov_read_default }, |
|
{ MKTAG('m','v','h','d'), mov_read_mvhd }, |
|
{ MKTAG('S','M','I',' '), mov_read_svq3 }, |
|
{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */ |
|
{ MKTAG('a','v','c','C'), mov_read_glbl }, |
|
{ MKTAG('p','a','s','p'), mov_read_pasp }, |
|
{ MKTAG('s','i','d','x'), mov_read_sidx }, |
|
{ MKTAG('s','t','b','l'), mov_read_default }, |
|
{ MKTAG('s','t','c','o'), mov_read_stco }, |
|
{ MKTAG('s','t','p','s'), mov_read_stps }, |
|
{ MKTAG('s','t','r','f'), mov_read_strf }, |
|
{ MKTAG('s','t','s','c'), mov_read_stsc }, |
|
{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */ |
|
{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */ |
|
{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */ |
|
{ MKTAG('s','t','t','s'), mov_read_stts }, |
|
{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */ |
|
{ MKTAG('s','d','t','p'), mov_read_sdtp }, /* independent and disposable samples */ |
|
{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */ |
|
{ MKTAG('t','f','d','t'), mov_read_tfdt }, |
|
{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */ |
|
{ MKTAG('t','r','a','k'), mov_read_trak }, |
|
{ MKTAG('t','r','a','f'), mov_read_default }, |
|
{ MKTAG('t','r','e','f'), mov_read_default }, |
|
{ MKTAG('t','m','c','d'), mov_read_tmcd }, |
|
{ MKTAG('c','h','a','p'), mov_read_chap }, |
|
{ MKTAG('t','r','e','x'), mov_read_trex }, |
|
{ MKTAG('t','r','u','n'), mov_read_trun }, |
|
{ MKTAG('u','d','t','a'), mov_read_default }, |
|
{ MKTAG('w','a','v','e'), mov_read_wave }, |
|
{ MKTAG('e','s','d','s'), mov_read_esds }, |
|
{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */ |
|
{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */ |
|
{ MKTAG('d','d','t','s'), mov_read_ddts }, /* DTS audio descriptor */ |
|
{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */ |
|
{ MKTAG('w','f','e','x'), mov_read_wfex }, |
|
{ MKTAG('c','m','o','v'), mov_read_cmov }, |
|
{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */ |
|
{ MKTAG('d','v','c','1'), mov_read_dvc1 }, |
|
{ MKTAG('s','b','g','p'), mov_read_sbgp }, |
|
{ MKTAG('h','v','c','C'), mov_read_glbl }, |
|
{ MKTAG('u','u','i','d'), mov_read_uuid }, |
|
{ MKTAG('C','i','n', 0x8e), mov_read_targa_y216 }, |
|
{ MKTAG('f','r','e','e'), mov_read_free }, |
|
{ MKTAG('-','-','-','-'), mov_read_custom }, |
|
{ MKTAG('s','i','n','f'), mov_read_default }, |
|
{ MKTAG('f','r','m','a'), mov_read_frma }, |
|
{ MKTAG('s','e','n','c'), mov_read_senc }, |
|
{ MKTAG('s','a','i','z'), mov_read_saiz }, |
|
{ MKTAG('s','a','i','o'), mov_read_saio }, |
|
{ MKTAG('p','s','s','h'), mov_read_pssh }, |
|
{ MKTAG('s','c','h','m'), mov_read_schm }, |
|
{ MKTAG('s','c','h','i'), mov_read_default }, |
|
{ MKTAG('t','e','n','c'), mov_read_tenc }, |
|
{ MKTAG('d','f','L','a'), mov_read_dfla }, |
|
{ MKTAG('s','t','3','d'), mov_read_st3d }, /* stereoscopic 3D video box */ |
|
{ MKTAG('s','v','3','d'), mov_read_sv3d }, /* spherical video box */ |
|
{ MKTAG('d','O','p','s'), mov_read_dops }, |
|
{ MKTAG('d','m','l','p'), mov_read_dmlp }, |
|
{ MKTAG('S','m','D','m'), mov_read_smdm }, |
|
{ MKTAG('C','o','L','L'), mov_read_coll }, |
|
{ MKTAG('v','p','c','C'), mov_read_vpcc }, |
|
{ MKTAG('m','d','c','v'), mov_read_mdcv }, |
|
{ MKTAG('c','l','l','i'), mov_read_clli }, |
|
{ MKTAG('d','v','c','C'), mov_read_dvcc_dvvc }, |
|
{ MKTAG('d','v','v','C'), mov_read_dvcc_dvvc }, |
|
{ 0, NULL } |
|
}; |
|
|
|
static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
|
{ |
|
int64_t total_size = 0; |
|
MOVAtom a; |
|
int i; |
|
|
|
if (c->atom_depth > 10) { |
|
av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
c->atom_depth ++; |
|
|
|
if (atom.size < 0) |
|
atom.size = INT64_MAX; |
|
while (total_size <= atom.size - 8 && !avio_feof(pb)) { |
|
int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL; |
|
a.size = atom.size; |
|
a.type=0; |
|
if (atom.size >= 8) { |
|
a.size = avio_rb32(pb); |
|
a.type = avio_rl32(pb); |
|
if (((a.type == MKTAG('f','r','e','e') && c->moov_retry) || |
|
a.type == MKTAG('h','o','o','v')) && |
|
a.size >= 8 && |
|
c->fc->strict_std_compliance < FF_COMPLIANCE_STRICT) { |
|
uint32_t type; |
|
avio_skip(pb, 4); |
|
type = avio_rl32(pb); |
|
if (avio_feof(pb)) |
|
break; |
|
avio_seek(pb, -8, SEEK_CUR); |
|
if (type == MKTAG('m','v','h','d') || |
|
type == MKTAG('c','m','o','v')) { |
|
av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free or hoov atom.\n"); |
|
a.type = MKTAG('m','o','o','v'); |
|
} |
|
} |
|
if (atom.type != MKTAG('r','o','o','t') && |
|
atom.type != MKTAG('m','o','o','v')) { |
|
if (a.type == MKTAG('t','r','a','k') || |
|
a.type == MKTAG('m','d','a','t')) { |
|
av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n"); |
|
avio_skip(pb, -8); |
|
c->atom_depth --; |
|
return 0; |
|
} |
|
} |
|
total_size += 8; |
|
if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */ |
|
a.size = avio_rb64(pb) - 8; |
|
total_size += 8; |
|
} |
|
} |
|
av_log(c->fc, AV_LOG_TRACE, "type:'%s' parent:'%s' sz: %"PRId64" %"PRId64" %"PRId64"\n", |
|
av_fourcc2str(a.type), av_fourcc2str(atom.type), a.size, total_size, atom.size); |
|
if (a.size == 0) { |
|
a.size = atom.size - total_size + 8; |
|
} |
|
a.size -= 8; |
|
if (a.size < 0) |
|
break; |
|
a.size = FFMIN(a.size, atom.size - total_size); |
|
|
|
for (i = 0; mov_default_parse_table[i].type; i++) |
|
if (mov_default_parse_table[i].type == a.type) { |
|
parse = mov_default_parse_table[i].parse; |
|
break; |
|
} |
|
|
|
// container is user data |
|
if (!parse && (atom.type == MKTAG('u','d','t','a') || |
|
atom.type == MKTAG('i','l','s','t'))) |
|
parse = mov_read_udta_string; |
|
|
|
// Supports parsing the QuickTime Metadata Keys. |
|
// https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/Metadata/Metadata.html |
|
if (!parse && c->found_hdlr_mdta && |
|
atom.type == MKTAG('m','e','t','a') && |
|
a.type == MKTAG('k','e','y','s') && |
|
c->meta_keys_count == 0) { |
|
parse = mov_read_keys; |
|
} |
|
|
|
if (!parse) { /* skip leaf atoms data */ |
|
avio_skip(pb, a.size); |
|
} else { |
|
int64_t start_pos = avio_tell(pb); |
|
int64_t left; |
|
int err = parse(c, pb, a); |
|
if (err < 0) { |
|
c->atom_depth --; |
|
return err; |
|
} |
|
if (c->found_moov && c->found_mdat && a.size <= INT64_MAX - start_pos && |
|
((!(pb->seekable & AVIO_SEEKABLE_NORMAL) || c->fc->flags & AVFMT_FLAG_IGNIDX || c->frag_index.complete) || |
|
start_pos + a.size == avio_size(pb))) { |
|
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || c->fc->flags & AVFMT_FLAG_IGNIDX || c->frag_index.complete) |
|
c->next_root_atom = start_pos + a.size; |
|
c->atom_depth --; |
|
return 0; |
|
} |
|
left = a.size - avio_tell(pb) + start_pos; |
|
if (left > 0) /* skip garbage at atom end */ |
|
avio_skip(pb, left); |
|
else if (left < 0) { |
|
av_log(c->fc, AV_LOG_WARNING, |
|
"overread end of atom '%s' by %"PRId64" bytes\n", |
|
av_fourcc2str(a.type), -left); |
|
avio_seek(pb, left, SEEK_CUR); |
|
} |
|
} |
|
|
|
total_size += a.size; |
|
} |
|
|
|
if (total_size < atom.size && atom.size < 0x7ffff) |
|
avio_skip(pb, atom.size - total_size); |
|
|
|
c->atom_depth --; |
|
return 0; |
|
} |
|
|
|
static int mov_probe(const AVProbeData *p) |
|
{ |
|
int64_t offset; |
|
uint32_t tag; |
|
int score = 0; |
|
int moov_offset = -1; |
|
|
|
/* check file header */ |
|
offset = 0; |
|
for (;;) { |
|
/* ignore invalid offset */ |
|
if ((offset + 8) > (unsigned int)p->buf_size) |
|
break; |
|
tag = AV_RL32(p->buf + offset + 4); |
|
switch(tag) { |
|
/* check for obvious tags */ |
|
case MKTAG('m','o','o','v'): |
|
moov_offset = offset + 4; |
|
case MKTAG('m','d','a','t'): |
|
case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */ |
|
case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */ |
|
case MKTAG('f','t','y','p'): |
|
if (AV_RB32(p->buf+offset) < 8 && |
|
(AV_RB32(p->buf+offset) != 1 || |
|
offset + 12 > (unsigned int)p->buf_size || |
|
AV_RB64(p->buf+offset + 8) == 0)) { |
|
score = FFMAX(score, AVPROBE_SCORE_EXTENSION); |
|
} else if (tag == MKTAG('f','t','y','p') && |
|
( AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ') |
|
|| AV_RL32(p->buf + offset + 8) == MKTAG('j','p','x',' ') |
|
)) { |
|
score = FFMAX(score, 5); |
|
} else { |
|
score = AVPROBE_SCORE_MAX; |
|
} |
|
offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
|
break; |
|
/* those are more common words, so rate then a bit less */ |
|
case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */ |
|
case MKTAG('w','i','d','e'): |
|
case MKTAG('f','r','e','e'): |
|
case MKTAG('j','u','n','k'): |
|
case MKTAG('p','i','c','t'): |
|
score = FFMAX(score, AVPROBE_SCORE_MAX - 5); |
|
offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
|
break; |
|
case MKTAG(0x82,0x82,0x7f,0x7d): |
|
case MKTAG('s','k','i','p'): |
|
case MKTAG('u','u','i','d'): |
|
case MKTAG('p','r','f','l'): |
|
/* if we only find those cause probedata is too small at least rate them */ |
|
score = FFMAX(score, AVPROBE_SCORE_EXTENSION); |
|
offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
|
break; |
|
default: |
|
offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
|
} |
|
} |
|
if (score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) { |
|
/* moov atom in the header - we should make sure that this is not a |
|
* MOV-packed MPEG-PS */ |
|
offset = moov_offset; |
|
|
|
while (offset < (p->buf_size - 16)) { /* Sufficient space */ |
|
/* We found an actual hdlr atom */ |
|
if (AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') && |
|
AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') && |
|
AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')) { |
|
av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n"); |
|
/* We found a media handler reference atom describing an |
|
* MPEG-PS-in-MOV, return a |
|
* low score to force expanding the probe window until |
|
* mpegps_probe finds what it needs */ |
|
return 5; |
|
} else { |
|
/* Keep looking */ |
|
offset += 2; |
|
} |
|
} |
|
} |
|
|
|
return score; |
|
} |
|
|
|
// must be done after parsing all trak because there's no order requirement |
|
static void mov_read_chapters(AVFormatContext *s) |
|
{ |
|
MOVContext *mov = s->priv_data; |
|
AVStream *st; |
|
MOVStreamContext *sc; |
|
int64_t cur_pos; |
|
int i, j; |
|
int chapter_track; |
|
|
|
for (j = 0; j < mov->nb_chapter_tracks; j++) { |
|
chapter_track = mov->chapter_tracks[j]; |
|
st = NULL; |
|
for (i = 0; i < s->nb_streams; i++) |
|
if (s->streams[i]->id == chapter_track) { |
|
st = s->streams[i]; |
|
break; |
|
} |
|
if (!st) { |
|
av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n"); |
|
continue; |
|
} |
|
|
|
sc = st->priv_data; |
|
cur_pos = avio_tell(sc->pb); |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
st->disposition |= AV_DISPOSITION_ATTACHED_PIC | AV_DISPOSITION_TIMED_THUMBNAILS; |
|
if (st->internal->nb_index_entries) { |
|
// Retrieve the first frame, if possible |
|
AVIndexEntry *sample = &st->internal->index_entries[0]; |
|
if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) { |
|
av_log(s, AV_LOG_ERROR, "Failed to retrieve first frame\n"); |
|
goto finish; |
|
} |
|
|
|
if (av_get_packet(sc->pb, &st->attached_pic, sample->size) < 0) |
|
goto finish; |
|
|
|
st->attached_pic.stream_index = st->index; |
|
st->attached_pic.flags |= AV_PKT_FLAG_KEY; |
|
} |
|
} else { |
|
st->codecpar->codec_type = AVMEDIA_TYPE_DATA; |
|
st->codecpar->codec_id = AV_CODEC_ID_BIN_DATA; |
|
st->discard = AVDISCARD_ALL; |
|
for (i = 0; i < st->internal->nb_index_entries; i++) { |
|
AVIndexEntry *sample = &st->internal->index_entries[i]; |
|
int64_t end = i+1 < st->internal->nb_index_entries ? st->internal->index_entries[i+1].timestamp : st->duration; |
|
uint8_t *title; |
|
uint16_t ch; |
|
int len, title_len; |
|
|
|
if (end < sample->timestamp) { |
|
av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n"); |
|
end = AV_NOPTS_VALUE; |
|
} |
|
|
|
if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) { |
|
av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i); |
|
goto finish; |
|
} |
|
|
|
// the first two bytes are the length of the title |
|
len = avio_rb16(sc->pb); |
|
if (len > sample->size-2) |
|
continue; |
|
title_len = 2*len + 1; |
|
if (!(title = av_mallocz(title_len))) |
|
goto finish; |
|
|
|
// The samples could theoretically be in any encoding if there's an encd |
|
// atom following, but in practice are only utf-8 or utf-16, distinguished |
|
// instead by the presence of a BOM |
|
if (!len) { |
|
title[0] = 0; |
|
} else { |
|
ch = avio_rb16(sc->pb); |
|
if (ch == 0xfeff) |
|
avio_get_str16be(sc->pb, len, title, title_len); |
|
else if (ch == 0xfffe) |
|
avio_get_str16le(sc->pb, len, title, title_len); |
|
else { |
|
AV_WB16(title, ch); |
|
if (len == 1 || len == 2) |
|
title[len] = 0; |
|
else |
|
avio_get_str(sc->pb, INT_MAX, title + 2, len - 1); |
|
} |
|
} |
|
|
|
avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title); |
|
av_freep(&title); |
|
} |
|
} |
|
finish: |
|
avio_seek(sc->pb, cur_pos, SEEK_SET); |
|
} |
|
} |
|
|
|
static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st, |
|
uint32_t value, int flags) |
|
{ |
|
AVTimecode tc; |
|
char buf[AV_TIMECODE_STR_SIZE]; |
|
AVRational rate = st->avg_frame_rate; |
|
int ret = av_timecode_init(&tc, rate, flags, 0, s); |
|
if (ret < 0) |
|
return ret; |
|
av_dict_set(&st->metadata, "timecode", |
|
av_timecode_make_string(&tc, buf, value), 0); |
|
return 0; |
|
} |
|
|
|
static int mov_read_rtmd_track(AVFormatContext *s, AVStream *st) |
|
{ |
|
MOVStreamContext *sc = st->priv_data; |
|
char buf[AV_TIMECODE_STR_SIZE]; |
|
int64_t cur_pos = avio_tell(sc->pb); |
|
int hh, mm, ss, ff, drop; |
|
|
|
if (!st->internal->nb_index_entries) |
|
return -1; |
|
|
|
avio_seek(sc->pb, st->internal->index_entries->pos, SEEK_SET); |
|
avio_skip(s->pb, 13); |
|
hh = avio_r8(s->pb); |
|
mm = avio_r8(s->pb); |
|
ss = avio_r8(s->pb); |
|
drop = avio_r8(s->pb); |
|
ff = avio_r8(s->pb); |
|
snprintf(buf, AV_TIMECODE_STR_SIZE, "%02d:%02d:%02d%c%02d", |
|
hh, mm, ss, drop ? ';' : ':', ff); |
|
av_dict_set(&st->metadata, "timecode", buf, 0); |
|
|
|
avio_seek(sc->pb, cur_pos, SEEK_SET); |
|
return 0; |
|
} |
|
|
|
static int mov_read_timecode_track(AVFormatContext *s, AVStream *st) |
|
{ |
|
MOVStreamContext *sc = st->priv_data; |
|
int flags = 0; |
|
int64_t cur_pos = avio_tell(sc->pb); |
|
uint32_t value; |
|
|
|
if (!st->internal->nb_index_entries) |
|
return -1; |
|
|
|
avio_seek(sc->pb, st->internal->index_entries->pos, SEEK_SET); |
|
value = avio_rb32(s->pb); |
|
|
|
if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME; |
|
if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX; |
|
if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE; |
|
|
|
/* Assume Counter flag is set to 1 in tmcd track (even though it is likely |
|
* not the case) and thus assume "frame number format" instead of QT one. |
|
* No sample with tmcd track can be found with a QT timecode at the moment, |
|
* despite what the tmcd track "suggests" (Counter flag set to 0 means QT |
|
* format). */ |
|
parse_timecode_in_framenum_format(s, st, value, flags); |
|
|
|
avio_seek(sc->pb, cur_pos, SEEK_SET); |
|
return 0; |
|
} |
|
|
|
static void mov_free_encryption_index(MOVEncryptionIndex **index) { |
|
int i; |
|
if (!index || !*index) return; |
|
for (i = 0; i < (*index)->nb_encrypted_samples; i++) { |
|
av_encryption_info_free((*index)->encrypted_samples[i]); |
|
} |
|
av_freep(&(*index)->encrypted_samples); |
|
av_freep(&(*index)->auxiliary_info_sizes); |
|
av_freep(&(*index)->auxiliary_offsets); |
|
av_freep(index); |
|
} |
|
|
|
static int mov_read_close(AVFormatContext *s) |
|
{ |
|
MOVContext *mov = s->priv_data; |
|
int i, j; |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
|
|
if (!sc) |
|
continue; |
|
|
|
av_freep(&sc->ctts_data); |
|
for (j = 0; j < sc->drefs_count; j++) { |
|
av_freep(&sc->drefs[j].path); |
|
av_freep(&sc->drefs[j].dir); |
|
} |
|
av_freep(&sc->drefs); |
|
|
|
sc->drefs_count = 0; |
|
|
|
if (!sc->pb_is_copied) |
|
ff_format_io_close(s, &sc->pb); |
|
|
|
sc->pb = NULL; |
|
av_freep(&sc->chunk_offsets); |
|
av_freep(&sc->stsc_data); |
|
av_freep(&sc->sample_sizes); |
|
av_freep(&sc->keyframes); |
|
av_freep(&sc->stts_data); |
|
av_freep(&sc->sdtp_data); |
|
av_freep(&sc->stps_data); |
|
av_freep(&sc->elst_data); |
|
av_freep(&sc->rap_group); |
|
av_freep(&sc->display_matrix); |
|
av_freep(&sc->index_ranges); |
|
|
|
if (sc->extradata) |
|
for (j = 0; j < sc->stsd_count; j++) |
|
av_free(sc->extradata[j]); |
|
av_freep(&sc->extradata); |
|
av_freep(&sc->extradata_size); |
|
|
|
mov_free_encryption_index(&sc->cenc.encryption_index); |
|
av_encryption_info_free(sc->cenc.default_encrypted_sample); |
|
av_aes_ctr_free(sc->cenc.aes_ctr); |
|
|
|
av_freep(&sc->stereo3d); |
|
av_freep(&sc->spherical); |
|
av_freep(&sc->mastering); |
|
av_freep(&sc->coll); |
|
} |
|
|
|
av_freep(&mov->dv_demux); |
|
avformat_free_context(mov->dv_fctx); |
|
mov->dv_fctx = NULL; |
|
|
|
if (mov->meta_keys) { |
|
for (i = 1; i < mov->meta_keys_count; i++) { |
|
av_freep(&mov->meta_keys[i]); |
|
} |
|
av_freep(&mov->meta_keys); |
|
} |
|
|
|
av_freep(&mov->trex_data); |
|
av_freep(&mov->bitrates); |
|
|
|
for (i = 0; i < mov->frag_index.nb_items; i++) { |
|
MOVFragmentStreamInfo *frag = mov->frag_index.item[i].stream_info; |
|
for (j = 0; j < mov->frag_index.item[i].nb_stream_info; j++) { |
|
mov_free_encryption_index(&frag[j].encryption_index); |
|
} |
|
av_freep(&mov->frag_index.item[i].stream_info); |
|
} |
|
av_freep(&mov->frag_index.item); |
|
|
|
av_freep(&mov->aes_decrypt); |
|
av_freep(&mov->chapter_tracks); |
|
|
|
return 0; |
|
} |
|
|
|
static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && |
|
sc->timecode_track == tmcd_id) |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
/* look for a tmcd track not referenced by any video track, and export it globally */ |
|
static void export_orphan_timecode(AVFormatContext *s) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
|
|
if (st->codecpar->codec_tag == MKTAG('t','m','c','d') && |
|
!tmcd_is_referenced(s, i + 1)) { |
|
AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0); |
|
if (tcr) { |
|
av_dict_set(&s->metadata, "timecode", tcr->value, 0); |
|
break; |
|
} |
|
} |
|
} |
|
} |
|
|
|
static int read_tfra(MOVContext *mov, AVIOContext *f) |
|
{ |
|
int version, fieldlength, i, j; |
|
int64_t pos = avio_tell(f); |
|
uint32_t size = avio_rb32(f); |
|
unsigned track_id, item_count; |
|
|
|
if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) { |
|
return 1; |
|
} |
|
av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n"); |
|
|
|
version = avio_r8(f); |
|
avio_rb24(f); |
|
track_id = avio_rb32(f); |
|
fieldlength = avio_rb32(f); |
|
item_count = avio_rb32(f); |
|
for (i = 0; i < item_count; i++) { |
|
int64_t time, offset; |
|
int index; |
|
MOVFragmentStreamInfo * frag_stream_info; |
|
|
|
if (avio_feof(f)) { |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (version == 1) { |
|
time = avio_rb64(f); |
|
offset = avio_rb64(f); |
|
} else { |
|
time = avio_rb32(f); |
|
offset = avio_rb32(f); |
|
} |
|
|
|
// The first sample of each stream in a fragment is always a random |
|
// access sample. So it's entry in the tfra can be used as the |
|
// initial PTS of the fragment. |
|
index = update_frag_index(mov, offset); |
|
frag_stream_info = get_frag_stream_info(&mov->frag_index, index, track_id); |
|
if (frag_stream_info && |
|
frag_stream_info->first_tfra_pts == AV_NOPTS_VALUE) |
|
frag_stream_info->first_tfra_pts = time; |
|
|
|
for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++) |
|
avio_r8(f); |
|
for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++) |
|
avio_r8(f); |
|
for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++) |
|
avio_r8(f); |
|
} |
|
|
|
avio_seek(f, pos + size, SEEK_SET); |
|
return 0; |
|
} |
|
|
|
static int mov_read_mfra(MOVContext *c, AVIOContext *f) |
|
{ |
|
int64_t stream_size = avio_size(f); |
|
int64_t original_pos = avio_tell(f); |
|
int64_t seek_ret; |
|
int ret = -1; |
|
if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) { |
|
ret = seek_ret; |
|
goto fail; |
|
} |
|
c->mfra_size = avio_rb32(f); |
|
c->have_read_mfra_size = 1; |
|
if (!c->mfra_size || c->mfra_size > stream_size) { |
|
av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n"); |
|
goto fail; |
|
} |
|
if ((seek_ret = avio_seek(f, -((int64_t) c->mfra_size), SEEK_CUR)) < 0) { |
|
ret = seek_ret; |
|
goto fail; |
|
} |
|
if (avio_rb32(f) != c->mfra_size) { |
|
av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n"); |
|
goto fail; |
|
} |
|
if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) { |
|
av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n"); |
|
goto fail; |
|
} |
|
av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n"); |
|
do { |
|
ret = read_tfra(c, f); |
|
if (ret < 0) |
|
goto fail; |
|
} while (!ret); |
|
ret = 0; |
|
c->frag_index.complete = 1; |
|
fail: |
|
seek_ret = avio_seek(f, original_pos, SEEK_SET); |
|
if (seek_ret < 0) { |
|
av_log(c->fc, AV_LOG_ERROR, |
|
"failed to seek back after looking for mfra\n"); |
|
ret = seek_ret; |
|
} |
|
return ret; |
|
} |
|
|
|
static int mov_read_header(AVFormatContext *s) |
|
{ |
|
MOVContext *mov = s->priv_data; |
|
AVIOContext *pb = s->pb; |
|
int j, err; |
|
MOVAtom atom = { AV_RL32("root") }; |
|
int i; |
|
|
|
if (mov->decryption_key_len != 0 && mov->decryption_key_len != AES_CTR_KEY_SIZE) { |
|
av_log(s, AV_LOG_ERROR, "Invalid decryption key len %d expected %d\n", |
|
mov->decryption_key_len, AES_CTR_KEY_SIZE); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
mov->fc = s; |
|
mov->trak_index = -1; |
|
/* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */ |
|
if (pb->seekable & AVIO_SEEKABLE_NORMAL) |
|
atom.size = avio_size(pb); |
|
else |
|
atom.size = INT64_MAX; |
|
|
|
/* check MOV header */ |
|
do { |
|
if (mov->moov_retry) |
|
avio_seek(pb, 0, SEEK_SET); |
|
if ((err = mov_read_default(mov, pb, atom)) < 0) { |
|
av_log(s, AV_LOG_ERROR, "error reading header\n"); |
|
goto fail; |
|
} |
|
} while ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mov->found_moov && !mov->moov_retry++); |
|
if (!mov->found_moov) { |
|
av_log(s, AV_LOG_ERROR, "moov atom not found\n"); |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb)); |
|
|
|
if (pb->seekable & AVIO_SEEKABLE_NORMAL) { |
|
if (mov->nb_chapter_tracks > 0 && !mov->ignore_chapters) |
|
mov_read_chapters(s); |
|
for (i = 0; i < s->nb_streams; i++) |
|
if (s->streams[i]->codecpar->codec_tag == AV_RL32("tmcd")) { |
|
mov_read_timecode_track(s, s->streams[i]); |
|
} else if (s->streams[i]->codecpar->codec_tag == AV_RL32("rtmd")) { |
|
mov_read_rtmd_track(s, s->streams[i]); |
|
} |
|
} |
|
|
|
/* copy timecode metadata from tmcd tracks to the related video streams */ |
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
if (sc->timecode_track > 0) { |
|
AVDictionaryEntry *tcr; |
|
int tmcd_st_id = -1; |
|
|
|
for (j = 0; j < s->nb_streams; j++) |
|
if (s->streams[j]->id == sc->timecode_track) |
|
tmcd_st_id = j; |
|
|
|
if (tmcd_st_id < 0 || tmcd_st_id == i) |
|
continue; |
|
tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0); |
|
if (tcr) |
|
av_dict_set(&st->metadata, "timecode", tcr->value, 0); |
|
} |
|
} |
|
export_orphan_timecode(s); |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
fix_timescale(mov, sc); |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && |
|
st->codecpar->codec_id == AV_CODEC_ID_AAC) { |
|
st->internal->skip_samples = sc->start_pad; |
|
} |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0) |
|
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, |
|
sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX); |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) { |
|
if (st->codecpar->width <= 0 || st->codecpar->height <= 0) { |
|
st->codecpar->width = sc->width; |
|
st->codecpar->height = sc->height; |
|
} |
|
if (st->codecpar->codec_id == AV_CODEC_ID_DVD_SUBTITLE) { |
|
if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0) |
|
goto fail; |
|
} |
|
} |
|
if (mov->handbrake_version && |
|
mov->handbrake_version <= 1000000*0 + 1000*10 + 2 && // 0.10.2 |
|
st->codecpar->codec_id == AV_CODEC_ID_MP3) { |
|
av_log(s, AV_LOG_VERBOSE, "Forcing full parsing for mp3 stream\n"); |
|
st->need_parsing = AVSTREAM_PARSE_FULL; |
|
} |
|
} |
|
|
|
if (mov->trex_data) { |
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
if (st->duration > 0) { |
|
if (sc->data_size > INT64_MAX / sc->time_scale / 8) { |
|
av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %"PRId64" * 8 * %d\n", |
|
sc->data_size, sc->time_scale); |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration; |
|
} |
|
} |
|
} |
|
|
|
if (mov->use_mfra_for > 0) { |
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
if (sc->duration_for_fps > 0) { |
|
if (sc->data_size > INT64_MAX / sc->time_scale / 8) { |
|
av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %"PRId64" * 8 * %d\n", |
|
sc->data_size, sc->time_scale); |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale / |
|
sc->duration_for_fps; |
|
} |
|
} |
|
} |
|
|
|
for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) { |
|
if (mov->bitrates[i]) { |
|
s->streams[i]->codecpar->bit_rate = mov->bitrates[i]; |
|
} |
|
} |
|
|
|
ff_rfps_calculate(s); |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
MOVStreamContext *sc = st->priv_data; |
|
|
|
switch (st->codecpar->codec_type) { |
|
case AVMEDIA_TYPE_AUDIO: |
|
err = ff_replaygain_export(st, s->metadata); |
|
if (err < 0) |
|
goto fail; |
|
break; |
|
case AVMEDIA_TYPE_VIDEO: |
|
if (sc->display_matrix) { |
|
err = av_stream_add_side_data(st, AV_PKT_DATA_DISPLAYMATRIX, (uint8_t*)sc->display_matrix, |
|
sizeof(int32_t) * 9); |
|
if (err < 0) |
|
goto fail; |
|
|
|
sc->display_matrix = NULL; |
|
} |
|
if (sc->stereo3d) { |
|
err = av_stream_add_side_data(st, AV_PKT_DATA_STEREO3D, |
|
(uint8_t *)sc->stereo3d, |
|
sizeof(*sc->stereo3d)); |
|
if (err < 0) |
|
goto fail; |
|
|
|
sc->stereo3d = NULL; |
|
} |
|
if (sc->spherical) { |
|
err = av_stream_add_side_data(st, AV_PKT_DATA_SPHERICAL, |
|
(uint8_t *)sc->spherical, |
|
sc->spherical_size); |
|
if (err < 0) |
|
goto fail; |
|
|
|
sc->spherical = NULL; |
|
} |
|
if (sc->mastering) { |
|
err = av_stream_add_side_data(st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, |
|
(uint8_t *)sc->mastering, |
|
sizeof(*sc->mastering)); |
|
if (err < 0) |
|
goto fail; |
|
|
|
sc->mastering = NULL; |
|
} |
|
if (sc->coll) { |
|
err = av_stream_add_side_data(st, AV_PKT_DATA_CONTENT_LIGHT_LEVEL, |
|
(uint8_t *)sc->coll, |
|
sc->coll_size); |
|
if (err < 0) |
|
goto fail; |
|
|
|
sc->coll = NULL; |
|
} |
|
break; |
|
} |
|
} |
|
ff_configure_buffers_for_index(s, AV_TIME_BASE); |
|
|
|
for (i = 0; i < mov->frag_index.nb_items; i++) |
|
if (mov->frag_index.item[i].moof_offset <= mov->fragment.moof_offset) |
|
mov->frag_index.item[i].headers_read = 1; |
|
|
|
return 0; |
|
fail: |
|
mov_read_close(s); |
|
return err; |
|
} |
|
|
|
static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st) |
|
{ |
|
AVIndexEntry *sample = NULL; |
|
int64_t best_dts = INT64_MAX; |
|
int i; |
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *avst = s->streams[i]; |
|
MOVStreamContext *msc = avst->priv_data; |
|
if (msc->pb && msc->current_sample < avst->internal->nb_index_entries) { |
|
AVIndexEntry *current_sample = &avst->internal->index_entries[msc->current_sample]; |
|
int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale); |
|
av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts); |
|
if (!sample || (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) && current_sample->pos < sample->pos) || |
|
((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && |
|
((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb && dts != AV_NOPTS_VALUE && |
|
((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) || |
|
(FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) { |
|
sample = current_sample; |
|
best_dts = dts; |
|
*st = avst; |
|
} |
|
} |
|
} |
|
return sample; |
|
} |
|
|
|
static int should_retry(AVIOContext *pb, int error_code) { |
|
if (error_code == AVERROR_EOF || avio_feof(pb)) |
|
return 0; |
|
|
|
return 1; |
|
} |
|
|
|
static int mov_switch_root(AVFormatContext *s, int64_t target, int index) |
|
{ |
|
int ret; |
|
MOVContext *mov = s->priv_data; |
|
|
|
if (index >= 0 && index < mov->frag_index.nb_items) |
|
target = mov->frag_index.item[index].moof_offset; |
|
if (avio_seek(s->pb, target, SEEK_SET) != target) { |
|
av_log(mov->fc, AV_LOG_ERROR, "root atom offset 0x%"PRIx64": partial file\n", target); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
mov->next_root_atom = 0; |
|
if (index < 0 || index >= mov->frag_index.nb_items) |
|
index = search_frag_moof_offset(&mov->frag_index, target); |
|
if (index < mov->frag_index.nb_items && |
|
mov->frag_index.item[index].moof_offset == target) { |
|
if (index + 1 < mov->frag_index.nb_items) |
|
mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset; |
|
if (mov->frag_index.item[index].headers_read) |
|
return 0; |
|
mov->frag_index.item[index].headers_read = 1; |
|
} |
|
|
|
mov->found_mdat = 0; |
|
|
|
ret = mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }); |
|
if (ret < 0) |
|
return ret; |
|
if (avio_feof(s->pb)) |
|
return AVERROR_EOF; |
|
av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb)); |
|
|
|
return 1; |
|
} |
|
|
|
static int mov_change_extradata(MOVStreamContext *sc, AVPacket *pkt) |
|
{ |
|
uint8_t *side, *extradata; |
|
int extradata_size; |
|
|
|
/* Save the current index. */ |
|
sc->last_stsd_index = sc->stsc_data[sc->stsc_index].id - 1; |
|
|
|
/* Notify the decoder that extradata changed. */ |
|
extradata_size = sc->extradata_size[sc->last_stsd_index]; |
|
extradata = sc->extradata[sc->last_stsd_index]; |
|
if (extradata_size > 0 && extradata) { |
|
side = av_packet_new_side_data(pkt, |
|
AV_PKT_DATA_NEW_EXTRADATA, |
|
extradata_size); |
|
if (!side) |
|
return AVERROR(ENOMEM); |
|
memcpy(side, extradata, extradata_size); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int get_eia608_packet(AVIOContext *pb, AVPacket *pkt, int size) |
|
{ |
|
int new_size, ret; |
|
|
|
if (size <= 8) |
|
return AVERROR_INVALIDDATA; |
|
new_size = ((size - 8) / 2) * 3; |
|
ret = av_new_packet(pkt, new_size); |
|
if (ret < 0) |
|
return ret; |
|
|
|
avio_skip(pb, 8); |
|
for (int j = 0; j < new_size; j += 3) { |
|
pkt->data[j] = 0xFC; |
|
pkt->data[j+1] = avio_r8(pb); |
|
pkt->data[j+2] = avio_r8(pb); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) |
|
{ |
|
MOVContext *mov = s->priv_data; |
|
MOVStreamContext *sc; |
|
AVIndexEntry *sample; |
|
AVStream *st = NULL; |
|
int64_t current_index; |
|
int ret; |
|
mov->fc = s; |
|
retry: |
|
sample = mov_find_next_sample(s, &st); |
|
if (!sample || (mov->next_root_atom && sample->pos > mov->next_root_atom)) { |
|
if (!mov->next_root_atom) |
|
return AVERROR_EOF; |
|
if ((ret = mov_switch_root(s, mov->next_root_atom, -1)) < 0) |
|
return ret; |
|
goto retry; |
|
} |
|
sc = st->priv_data; |
|
/* must be done just before reading, to avoid infinite loop on sample */ |
|
current_index = sc->current_index; |
|
mov_current_sample_inc(sc); |
|
|
|
if (mov->next_root_atom) { |
|
sample->pos = FFMIN(sample->pos, mov->next_root_atom); |
|
sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos)); |
|
} |
|
|
|
if (st->discard != AVDISCARD_ALL) { |
|
int64_t ret64 = avio_seek(sc->pb, sample->pos, SEEK_SET); |
|
if (ret64 != sample->pos) { |
|
av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", |
|
sc->ffindex, sample->pos); |
|
if (should_retry(sc->pb, ret64)) { |
|
mov_current_sample_dec(sc); |
|
} |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (st->discard == AVDISCARD_NONKEY && !(sample->flags & AVINDEX_KEYFRAME)) { |
|
av_log(mov->fc, AV_LOG_DEBUG, "Nonkey frame from stream %d discarded due to AVDISCARD_NONKEY\n", sc->ffindex); |
|
goto retry; |
|
} |
|
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_EIA_608 && sample->size > 8) |
|
ret = get_eia608_packet(sc->pb, pkt, sample->size); |
|
else |
|
ret = av_get_packet(sc->pb, pkt, sample->size); |
|
if (ret < 0) { |
|
if (should_retry(sc->pb, ret)) { |
|
mov_current_sample_dec(sc); |
|
} |
|
return ret; |
|
} |
|
#if CONFIG_DV_DEMUXER |
|
if (mov->dv_demux && sc->dv_audio_container) { |
|
AVBufferRef *buf = pkt->buf; |
|
ret = avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos); |
|
pkt->buf = buf; |
|
av_packet_unref(pkt); |
|
if (ret < 0) |
|
return ret; |
|
ret = avpriv_dv_get_packet(mov->dv_demux, pkt); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
#endif |
|
if (sc->has_palette) { |
|
uint8_t *pal; |
|
|
|
pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE); |
|
if (!pal) { |
|
av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n"); |
|
} else { |
|
memcpy(pal, sc->palette, AVPALETTE_SIZE); |
|
sc->has_palette = 0; |
|
} |
|
} |
|
if (st->codecpar->codec_id == AV_CODEC_ID_MP3 && !st->need_parsing && pkt->size > 4) { |
|
if (ff_mpa_check_header(AV_RB32(pkt->data)) < 0) |
|
st->need_parsing = AVSTREAM_PARSE_FULL; |
|
} |
|
} |
|
|
|
pkt->stream_index = sc->ffindex; |
|
pkt->dts = sample->timestamp; |
|
if (sample->flags & AVINDEX_DISCARD_FRAME) { |
|
pkt->flags |= AV_PKT_FLAG_DISCARD; |
|
} |
|
if (sc->ctts_data && sc->ctts_index < sc->ctts_count) { |
|
pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration; |
|
/* update ctts context */ |
|
sc->ctts_sample++; |
|
if (sc->ctts_index < sc->ctts_count && |
|
sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) { |
|
sc->ctts_index++; |
|
sc->ctts_sample = 0; |
|
} |
|
} else { |
|
int64_t next_dts = (sc->current_sample < st->internal->nb_index_entries) ? |
|
st->internal->index_entries[sc->current_sample].timestamp : st->duration; |
|
|
|
if (next_dts >= pkt->dts) |
|
pkt->duration = next_dts - pkt->dts; |
|
pkt->pts = pkt->dts; |
|
} |
|
if (st->discard == AVDISCARD_ALL) |
|
goto retry; |
|
if (sc->sdtp_data && sc->current_sample <= sc->sdtp_count) { |
|
uint8_t sample_flags = sc->sdtp_data[sc->current_sample - 1]; |
|
uint8_t sample_is_depended_on = (sample_flags >> 2) & 0x3; |
|
pkt->flags |= sample_is_depended_on == MOV_SAMPLE_DEPENDENCY_NO ? AV_PKT_FLAG_DISPOSABLE : 0; |
|
} |
|
pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0; |
|
pkt->pos = sample->pos; |
|
|
|
/* Multiple stsd handling. */ |
|
if (sc->stsc_data) { |
|
/* Keep track of the stsc index for the given sample, then check |
|
* if the stsd index is different from the last used one. */ |
|
sc->stsc_sample++; |
|
if (mov_stsc_index_valid(sc->stsc_index, sc->stsc_count) && |
|
mov_get_stsc_samples(sc, sc->stsc_index) == sc->stsc_sample) { |
|
sc->stsc_index++; |
|
sc->stsc_sample = 0; |
|
/* Do not check indexes after a switch. */ |
|
} else if (sc->stsc_data[sc->stsc_index].id > 0 && |
|
sc->stsc_data[sc->stsc_index].id - 1 < sc->stsd_count && |
|
sc->stsc_data[sc->stsc_index].id - 1 != sc->last_stsd_index) { |
|
ret = mov_change_extradata(sc, pkt); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} |
|
|
|
if (mov->aax_mode) |
|
aax_filter(pkt->data, pkt->size, mov); |
|
|
|
ret = cenc_filter(mov, st, sc, pkt, current_index); |
|
if (ret < 0) { |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_seek_fragment(AVFormatContext *s, AVStream *st, int64_t timestamp) |
|
{ |
|
MOVContext *mov = s->priv_data; |
|
int index; |
|
|
|
if (!mov->frag_index.complete) |
|
return 0; |
|
|
|
index = search_frag_timestamp(&mov->frag_index, st, timestamp); |
|
if (index < 0) |
|
index = 0; |
|
if (!mov->frag_index.item[index].headers_read) |
|
return mov_switch_root(s, -1, index); |
|
if (index + 1 < mov->frag_index.nb_items) |
|
mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset; |
|
|
|
return 0; |
|
} |
|
|
|
static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags) |
|
{ |
|
MOVStreamContext *sc = st->priv_data; |
|
int sample, time_sample, ret; |
|
unsigned int i; |
|
|
|
// Here we consider timestamp to be PTS, hence try to offset it so that we |
|
// can search over the DTS timeline. |
|
timestamp -= (sc->min_corrected_pts + sc->dts_shift); |
|
|
|
ret = mov_seek_fragment(s, st, timestamp); |
|
if (ret < 0) |
|
return ret; |
|
|
|
sample = av_index_search_timestamp(st, timestamp, flags); |
|
av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample); |
|
if (sample < 0 && st->internal->nb_index_entries && timestamp < st->internal->index_entries[0].timestamp) |
|
sample = 0; |
|
if (sample < 0) /* not sure what to do */ |
|
return AVERROR_INVALIDDATA; |
|
mov_current_sample_set(sc, sample); |
|
av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample); |
|
/* adjust ctts index */ |
|
if (sc->ctts_data) { |
|
time_sample = 0; |
|
for (i = 0; i < sc->ctts_count; i++) { |
|
int next = time_sample + sc->ctts_data[i].count; |
|
if (next > sc->current_sample) { |
|
sc->ctts_index = i; |
|
sc->ctts_sample = sc->current_sample - time_sample; |
|
break; |
|
} |
|
time_sample = next; |
|
} |
|
} |
|
|
|
/* adjust stsd index */ |
|
if (sc->chunk_count) { |
|
time_sample = 0; |
|
for (i = 0; i < sc->stsc_count; i++) { |
|
int64_t next = time_sample + mov_get_stsc_samples(sc, i); |
|
if (next > sc->current_sample) { |
|
sc->stsc_index = i; |
|
sc->stsc_sample = sc->current_sample - time_sample; |
|
break; |
|
} |
|
av_assert0(next == (int)next); |
|
time_sample = next; |
|
} |
|
} |
|
|
|
return sample; |
|
} |
|
|
|
static int64_t mov_get_skip_samples(AVStream *st, int sample) |
|
{ |
|
MOVStreamContext *sc = st->priv_data; |
|
int64_t first_ts = st->internal->index_entries[0].timestamp; |
|
int64_t ts = st->internal->index_entries[sample].timestamp; |
|
int64_t off; |
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) |
|
return 0; |
|
|
|
/* compute skip samples according to stream start_pad, seek ts and first ts */ |
|
off = av_rescale_q(ts - first_ts, st->time_base, |
|
(AVRational){1, st->codecpar->sample_rate}); |
|
return FFMAX(sc->start_pad - off, 0); |
|
} |
|
|
|
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) |
|
{ |
|
MOVContext *mc = s->priv_data; |
|
AVStream *st; |
|
int sample; |
|
int i; |
|
|
|
if (stream_index >= s->nb_streams) |
|
return AVERROR_INVALIDDATA; |
|
|
|
st = s->streams[stream_index]; |
|
sample = mov_seek_stream(s, st, sample_time, flags); |
|
if (sample < 0) |
|
return sample; |
|
|
|
if (mc->seek_individually) { |
|
/* adjust seek timestamp to found sample timestamp */ |
|
int64_t seek_timestamp = st->internal->index_entries[sample].timestamp; |
|
st->internal->skip_samples = mov_get_skip_samples(st, sample); |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
int64_t timestamp; |
|
st = s->streams[i]; |
|
|
|
if (stream_index == i) |
|
continue; |
|
|
|
timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base); |
|
sample = mov_seek_stream(s, st, timestamp, flags); |
|
if (sample >= 0) |
|
st->internal->skip_samples = mov_get_skip_samples(st, sample); |
|
} |
|
} else { |
|
for (i = 0; i < s->nb_streams; i++) { |
|
MOVStreamContext *sc; |
|
st = s->streams[i]; |
|
sc = st->priv_data; |
|
mov_current_sample_set(sc, 0); |
|
} |
|
while (1) { |
|
MOVStreamContext *sc; |
|
AVIndexEntry *entry = mov_find_next_sample(s, &st); |
|
if (!entry) |
|
return AVERROR_INVALIDDATA; |
|
sc = st->priv_data; |
|
if (sc->ffindex == stream_index && sc->current_sample == sample) |
|
break; |
|
mov_current_sample_inc(sc); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
#define OFFSET(x) offsetof(MOVContext, x) |
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM |
|
static const AVOption mov_options[] = { |
|
{"use_absolute_path", |
|
"allow using absolute path when opening alias, this is a possible security issue", |
|
OFFSET(use_absolute_path), AV_OPT_TYPE_BOOL, {.i64 = 0}, |
|
0, 1, FLAGS}, |
|
{"seek_streams_individually", |
|
"Seek each stream individually to the closest point", |
|
OFFSET(seek_individually), AV_OPT_TYPE_BOOL, { .i64 = 1 }, |
|
0, 1, FLAGS}, |
|
{"ignore_editlist", "Ignore the edit list atom.", OFFSET(ignore_editlist), AV_OPT_TYPE_BOOL, {.i64 = 0}, |
|
0, 1, FLAGS}, |
|
{"advanced_editlist", |
|
"Modify the AVIndex according to the editlists. Use this option to decode in the order specified by the edits.", |
|
OFFSET(advanced_editlist), AV_OPT_TYPE_BOOL, {.i64 = 1}, |
|
0, 1, FLAGS}, |
|
{"ignore_chapters", "", OFFSET(ignore_chapters), AV_OPT_TYPE_BOOL, {.i64 = 0}, |
|
0, 1, FLAGS}, |
|
{"use_mfra_for", |
|
"use mfra for fragment timestamps", |
|
OFFSET(use_mfra_for), AV_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, |
|
-1, FF_MOV_FLAG_MFRA_PTS, FLAGS, |
|
"use_mfra_for"}, |
|
{"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0, |
|
FLAGS, "use_mfra_for" }, |
|
{"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0, |
|
FLAGS, "use_mfra_for" }, |
|
{"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0, |
|
FLAGS, "use_mfra_for" }, |
|
{ "export_all", "Export unrecognized metadata entries", OFFSET(export_all), |
|
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS }, |
|
{ "export_xmp", "Export full XMP metadata", OFFSET(export_xmp), |
|
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS }, |
|
{ "activation_bytes", "Secret bytes for Audible AAX files", OFFSET(activation_bytes), |
|
AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM }, |
|
{ "audible_key", "AES-128 Key for Audible AAXC files", OFFSET(audible_key), |
|
AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM }, |
|
{ "audible_iv", "AES-128 IV for Audible AAXC files", OFFSET(audible_iv), |
|
AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM }, |
|
{ "audible_fixed_key", // extracted from libAAX_SDK.so and AAXSDKWin.dll files! |
|
"Fixed key used for handling Audible AAX files", OFFSET(audible_fixed_key), |
|
AV_OPT_TYPE_BINARY, {.str="77214d4b196a87cd520045fd20a51d67"}, |
|
.flags = AV_OPT_FLAG_DECODING_PARAM }, |
|
{ "decryption_key", "The media decryption key (hex)", OFFSET(decryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM }, |
|
{ "enable_drefs", "Enable external track support.", OFFSET(enable_drefs), AV_OPT_TYPE_BOOL, |
|
{.i64 = 0}, 0, 1, FLAGS }, |
|
|
|
{ NULL }, |
|
}; |
|
|
|
static const AVClass mov_class = { |
|
.class_name = "mov,mp4,m4a,3gp,3g2,mj2", |
|
.item_name = av_default_item_name, |
|
.option = mov_options, |
|
.version = LIBAVUTIL_VERSION_INT, |
|
}; |
|
|
|
AVInputFormat ff_mov_demuxer = { |
|
.name = "mov,mp4,m4a,3gp,3g2,mj2", |
|
.long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"), |
|
.priv_class = &mov_class, |
|
.priv_data_size = sizeof(MOVContext), |
|
.extensions = "mov,mp4,m4a,3gp,3g2,mj2,psp,m4b,ism,ismv,isma,f4v", |
|
.read_probe = mov_probe, |
|
.read_header = mov_read_header, |
|
.read_packet = mov_read_packet, |
|
.read_close = mov_read_close, |
|
.read_seek = mov_read_seek, |
|
.flags = AVFMT_NO_BYTE_SEEK | AVFMT_SEEK_TO_PTS, |
|
};
|
|
|