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3340 lines
118 KiB
3340 lines
118 KiB
/* |
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* Matroska muxer |
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* Copyright (c) 2007 David Conrad |
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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 <stdint.h> |
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|
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#include "config_components.h" |
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|
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#include "av1.h" |
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#include "avc.h" |
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#include "hevc.h" |
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#include "avformat.h" |
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#include "avio_internal.h" |
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#include "avlanguage.h" |
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#include "dovi_isom.h" |
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#include "flacenc.h" |
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#include "internal.h" |
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#include "isom.h" |
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#include "matroska.h" |
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#include "mux.h" |
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#include "riff.h" |
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#include "version.h" |
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#include "vorbiscomment.h" |
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#include "wv.h" |
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|
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#include "libavutil/avstring.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/crc.h" |
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#include "libavutil/dict.h" |
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#include "libavutil/intfloat.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/lfg.h" |
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#include "libavutil/mastering_display_metadata.h" |
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#include "libavutil/mathematics.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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#include "libavutil/random_seed.h" |
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#include "libavutil/rational.h" |
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#include "libavutil/samplefmt.h" |
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#include "libavutil/stereo3d.h" |
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|
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#include "libavcodec/xiph.h" |
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#include "libavcodec/mpeg4audio.h" |
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|
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/* Level 1 elements we create a SeekHead entry for: |
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* Info, Tracks, Chapters, Attachments, Tags (potentially twice) and Cues */ |
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#define MAX_SEEKHEAD_ENTRIES 7 |
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|
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/* Largest known-length EBML length */ |
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#define MAX_EBML_LENGTH ((1ULL << 56) - 2) |
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/* The dynamic buffer API we rely upon has a limit of INT_MAX; |
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* and so has avio_write(). */ |
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#define MAX_SUPPORTED_EBML_LENGTH FFMIN(MAX_EBML_LENGTH, INT_MAX) |
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|
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#define MODE_MATROSKAv2 0x01 |
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#define MODE_WEBM 0x02 |
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|
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#define IS_WEBM(mkv) (CONFIG_WEBM_MUXER && CONFIG_MATROSKA_MUXER ? \ |
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((mkv)->mode == MODE_WEBM) : CONFIG_WEBM_MUXER) |
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#define IS_SEEKABLE(pb, mkv) (((pb)->seekable & AVIO_SEEKABLE_NORMAL) && \ |
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!(mkv)->is_live) |
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enum { |
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DEFAULT_MODE_INFER, |
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DEFAULT_MODE_INFER_NO_SUBS, |
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DEFAULT_MODE_PASSTHROUGH, |
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}; |
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|
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typedef struct ebml_master { |
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int64_t pos; ///< absolute offset in the containing AVIOContext where the master's elements start |
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int sizebytes; ///< how many bytes were reserved for the size |
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} ebml_master; |
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|
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typedef struct ebml_stored_master { |
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AVIOContext *bc; |
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int64_t pos; |
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} ebml_stored_master; |
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|
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typedef enum EbmlType { |
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EBML_UINT, |
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EBML_SINT, |
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EBML_FLOAT, |
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EBML_UID, |
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EBML_STR, |
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EBML_UTF8 = EBML_STR, |
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EBML_BIN, |
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EBML_BLOCK, ///< pseudo-type for writing (Simple)Blocks |
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EBML_MASTER, |
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} EbmlType; |
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|
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typedef struct BlockContext { |
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struct mkv_track *track; |
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const AVPacket *pkt; |
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int16_t rel_ts; |
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uint8_t flags; |
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NALUList h2645_nalu_list; |
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} BlockContext; |
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typedef struct EbmlMaster { |
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int nb_elements; ///< -1 if not finished |
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int containing_master; ///< -1 if no parent exists |
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} EbmlMaster; |
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|
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typedef struct EbmlElement { |
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uint32_t id; |
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EbmlType type; |
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unsigned length_size; |
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uint64_t size; ///< excluding id and length field |
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union { |
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uint64_t uint; |
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int64_t sint; |
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double f; |
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const char *str; |
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const uint8_t *bin; |
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struct MatroskaMuxContext *mkv; ///< used by EBML_BLOCK |
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EbmlMaster master; |
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} priv; |
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} EbmlElement; |
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|
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typedef struct EbmlWriter { |
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unsigned nb_elements; |
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int current_master_element; |
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EbmlElement *elements; |
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} EbmlWriter; |
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|
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#define EBML_WRITER(max_nb_elems) \ |
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EbmlElement elements[max_nb_elems]; \ |
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EbmlWriter writer = (EbmlWriter){ .elements = elements, \ |
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.current_master_element = -1 } |
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|
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typedef struct mkv_seekhead_entry { |
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uint32_t elementid; |
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uint64_t segmentpos; |
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} mkv_seekhead_entry; |
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|
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typedef struct mkv_seekhead { |
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int64_t filepos; |
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mkv_seekhead_entry entries[MAX_SEEKHEAD_ENTRIES]; |
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int num_entries; |
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int reserved_size; |
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} mkv_seekhead; |
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typedef struct mkv_cuepoint { |
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uint64_t pts; |
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int stream_idx; |
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int64_t cluster_pos; ///< offset of the cluster containing the block relative to the segment |
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int64_t relative_pos; ///< relative offset from the position of the cluster containing the block |
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int64_t duration; ///< duration of the block according to time base |
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} mkv_cuepoint; |
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|
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typedef struct mkv_cues { |
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mkv_cuepoint *entries; |
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int num_entries; |
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} mkv_cues; |
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struct MatroskaMuxContext; |
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|
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typedef struct mkv_track { |
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int write_dts; |
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int has_cue; |
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uint64_t uid; |
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unsigned track_num; |
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int track_num_size; |
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int sample_rate; |
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unsigned offset; |
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int64_t sample_rate_offset; |
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int64_t last_timestamp; |
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int64_t duration; |
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int64_t duration_offset; |
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int64_t codecpriv_offset; |
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int64_t ts_offset; |
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/* This callback will be called twice: First with a NULL AVIOContext |
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* to return the size of the (Simple)Block's data via size |
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* and a second time with the AVIOContext set when the data |
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* shall be written. |
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* The callback shall not return an error on the second call. */ |
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int (*reformat)(struct MatroskaMuxContext *, AVIOContext *, |
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const AVPacket *, int *size); |
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} mkv_track; |
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|
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typedef struct MatroskaMuxContext { |
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const AVClass *class; |
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AVFormatContext *ctx; |
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|
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int mode; |
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ebml_stored_master info; |
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ebml_stored_master track; |
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ebml_stored_master tags; |
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int64_t segment_offset; |
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AVIOContext *cluster_bc; |
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int64_t cluster_pos; ///< file offset of the current Cluster |
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int64_t cluster_pts; |
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int64_t duration_offset; |
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int64_t duration; |
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mkv_track *tracks; |
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mkv_seekhead seekhead; |
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mkv_cues cues; |
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int64_t cues_pos; |
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BlockContext cur_block; |
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AVPacket *cur_audio_pkt; |
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unsigned nb_attachments; |
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int have_video; |
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int wrote_chapters; |
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int wrote_tags; |
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int reserve_cues_space; |
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int cluster_size_limit; |
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int64_t cluster_time_limit; |
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int write_crc; |
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int is_live; |
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int is_dash; |
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int dash_track_number; |
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int allow_raw_vfw; |
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int flipped_raw_rgb; |
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int default_mode; |
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int move_cues_to_front; |
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uint32_t segment_uid[4]; |
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} MatroskaMuxContext; |
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/** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit |
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* offset, 4 bytes for target EBML ID */ |
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#define MAX_SEEKENTRY_SIZE 21 |
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/** 4 * (1-byte EBML ID, 1-byte EBML size, 8-byte uint max) */ |
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#define MAX_CUETRACKPOS_SIZE 40 |
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|
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/** Seek preroll value for opus */ |
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#define OPUS_SEEK_PREROLL 80000000 |
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|
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static int ebml_id_size(uint32_t id) |
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{ |
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return (av_log2(id) + 7U) / 8; |
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} |
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static void put_ebml_id(AVIOContext *pb, uint32_t id) |
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{ |
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int i = ebml_id_size(id); |
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while (i--) |
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avio_w8(pb, (uint8_t)(id >> (i * 8))); |
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} |
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/** |
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* Write an EBML size meaning "unknown size". |
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* |
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* @param bytes The number of bytes the size should occupy (maximum: 8). |
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*/ |
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static void put_ebml_size_unknown(AVIOContext *pb, int bytes) |
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{ |
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av_assert0(bytes <= 8); |
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avio_w8(pb, 0x1ff >> bytes); |
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if (av_builtin_constant_p(bytes) && bytes == 1) |
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return; |
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ffio_fill(pb, 0xff, bytes - 1); |
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} |
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/** |
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* Returns how many bytes are needed to represent a number |
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* as EBML variable length integer. |
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*/ |
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static int ebml_num_size(uint64_t num) |
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{ |
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int bytes = 0; |
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do { |
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bytes++; |
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} while (num >>= 7); |
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return bytes; |
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} |
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|
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/** |
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* Calculate how many bytes are needed to represent the length field |
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* of an EBML element whose payload has a given length. |
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*/ |
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static int ebml_length_size(uint64_t length) |
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{ |
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return ebml_num_size(length + 1); |
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} |
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/** |
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* Write a number as EBML variable length integer on `bytes` bytes. |
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* `bytes` is taken literally without checking. |
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*/ |
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static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes) |
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{ |
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num |= 1ULL << bytes * 7; |
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for (int i = bytes - 1; i >= 0; i--) |
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avio_w8(pb, (uint8_t)(num >> i * 8)); |
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} |
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/** |
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* Write a length as EBML variable length integer. |
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* |
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* @param bytes The number of bytes that need to be used to write the number. |
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* If zero, the minimal number of bytes will be used. |
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*/ |
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static void put_ebml_length(AVIOContext *pb, uint64_t length, int bytes) |
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{ |
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int needed_bytes = ebml_length_size(length); |
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|
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// sizes larger than this are currently undefined in EBML |
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av_assert0(length < (1ULL << 56) - 1); |
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if (bytes == 0) |
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bytes = needed_bytes; |
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// The bytes needed to write the given size must not exceed |
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// the bytes that we ought to use. |
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av_assert0(bytes >= needed_bytes); |
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put_ebml_num(pb, length, bytes); |
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} |
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/** |
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* Write a (random) UID with fixed size to make the output more deterministic |
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*/ |
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static void put_ebml_uid(AVIOContext *pb, uint32_t elementid, uint64_t uid) |
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{ |
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put_ebml_id(pb, elementid); |
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put_ebml_length(pb, 8, 0); |
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avio_wb64(pb, uid); |
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} |
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static void put_ebml_uint(AVIOContext *pb, uint32_t elementid, uint64_t val) |
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{ |
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int i, bytes = 1; |
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uint64_t tmp = val; |
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while (tmp >>= 8) |
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bytes++; |
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put_ebml_id(pb, elementid); |
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put_ebml_length(pb, bytes, 0); |
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for (i = bytes - 1; i >= 0; i--) |
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avio_w8(pb, (uint8_t)(val >> i * 8)); |
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} |
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static void put_ebml_float(AVIOContext *pb, uint32_t elementid, double val) |
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{ |
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put_ebml_id(pb, elementid); |
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put_ebml_length(pb, 8, 0); |
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avio_wb64(pb, av_double2int(val)); |
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} |
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static void put_ebml_binary(AVIOContext *pb, uint32_t elementid, |
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const void *buf, int size) |
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{ |
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put_ebml_id(pb, elementid); |
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put_ebml_length(pb, size, 0); |
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avio_write(pb, buf, size); |
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} |
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|
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static void put_ebml_string(AVIOContext *pb, uint32_t elementid, |
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const char *str) |
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{ |
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put_ebml_binary(pb, elementid, str, strlen(str)); |
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} |
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|
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/** |
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* Write a void element of a given size. Useful for reserving space in |
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* the file to be written to later. |
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* |
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* @param size The number of bytes to reserve, which must be at least 2. |
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*/ |
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static void put_ebml_void(AVIOContext *pb, int size) |
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{ |
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av_assert0(size >= 2); |
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|
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put_ebml_id(pb, EBML_ID_VOID); |
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// we need to subtract the length needed to store the size from the |
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// size we need to reserve so 2 cases, we use 8 bytes to store the |
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// size if possible, 1 byte otherwise |
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if (size < 10) { |
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size -= 2; |
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put_ebml_length(pb, size, 0); |
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} else { |
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size -= 9; |
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put_ebml_length(pb, size, 8); |
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} |
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ffio_fill(pb, 0, size); |
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} |
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static ebml_master start_ebml_master(AVIOContext *pb, uint32_t elementid, |
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uint64_t expectedsize) |
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{ |
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int bytes = expectedsize ? ebml_length_size(expectedsize) : 8; |
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|
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put_ebml_id(pb, elementid); |
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put_ebml_size_unknown(pb, bytes); |
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return (ebml_master) { avio_tell(pb), bytes }; |
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} |
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static void end_ebml_master(AVIOContext *pb, ebml_master master) |
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{ |
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int64_t pos = avio_tell(pb); |
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|
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if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0) |
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return; |
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put_ebml_length(pb, pos - master.pos, master.sizebytes); |
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avio_seek(pb, pos, SEEK_SET); |
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} |
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static EbmlElement *ebml_writer_add(EbmlWriter *writer, |
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uint32_t id, EbmlType type) |
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{ |
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writer->elements[writer->nb_elements].id = id; |
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writer->elements[writer->nb_elements].type = type; |
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return &writer->elements[writer->nb_elements++]; |
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} |
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|
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static void ebml_writer_open_master(EbmlWriter *writer, uint32_t id) |
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{ |
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EbmlElement *const elem = ebml_writer_add(writer, id, EBML_MASTER); |
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EbmlMaster *const master = &elem->priv.master; |
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|
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master->containing_master = writer->current_master_element; |
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master->nb_elements = -1; |
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|
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writer->current_master_element = writer->nb_elements - 1; |
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} |
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|
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static void ebml_writer_close_master(EbmlWriter *writer) |
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{ |
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EbmlElement *elem; |
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av_assert2(writer->current_master_element >= 0); |
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av_assert2(writer->current_master_element < writer->nb_elements); |
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elem = &writer->elements[writer->current_master_element]; |
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av_assert2(elem->type == EBML_MASTER); |
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elem->priv.master.nb_elements = writer->nb_elements - writer->current_master_element - 1; |
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writer->current_master_element = elem->priv.master.containing_master; |
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} |
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static void ebml_writer_close_or_discard_master(EbmlWriter *writer) |
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{ |
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av_assert2(writer->nb_elements > 0); |
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if (writer->current_master_element == writer->nb_elements - 1) { |
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/* The master element has no children. Discard it. */ |
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writer->nb_elements--; |
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return; |
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} |
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ebml_writer_close_master(writer); |
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} |
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|
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static void ebml_writer_add_string(EbmlWriter *writer, uint32_t id, |
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const char *str) |
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{ |
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EbmlElement *const elem = ebml_writer_add(writer, id, EBML_STR); |
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|
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elem->priv.str = str; |
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} |
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|
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static void ebml_writer_add_bin(EbmlWriter *writer, uint32_t id, |
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const uint8_t *data, size_t size) |
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{ |
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EbmlElement *const elem = ebml_writer_add(writer, id, EBML_BIN); |
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|
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#if SIZE_MAX > UINT64_MAX |
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size = FFMIN(size, UINT64_MAX); |
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#endif |
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elem->size = size; |
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elem->priv.bin = data; |
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} |
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|
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static void ebml_writer_add_float(EbmlWriter *writer, uint32_t id, |
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double val) |
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{ |
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EbmlElement *const elem = ebml_writer_add(writer, id, EBML_FLOAT); |
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|
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elem->priv.f = val; |
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} |
|
|
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static void ebml_writer_add_uid(EbmlWriter *writer, uint32_t id, |
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uint64_t val) |
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{ |
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EbmlElement *const elem = ebml_writer_add(writer, id, EBML_UID); |
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elem->priv.uint = val; |
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} |
|
|
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static void ebml_writer_add_uint(EbmlWriter *writer, uint32_t id, |
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uint64_t val) |
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{ |
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EbmlElement *elem = ebml_writer_add(writer, id, EBML_UINT); |
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elem->priv.uint = val; |
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} |
|
|
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static void ebml_writer_add_sint(EbmlWriter *writer, uint32_t id, |
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int64_t val) |
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{ |
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EbmlElement *elem = ebml_writer_add(writer, id, EBML_SINT); |
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elem->priv.sint = val; |
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} |
|
|
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static void ebml_writer_add_block(EbmlWriter *writer, MatroskaMuxContext *mkv) |
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{ |
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EbmlElement *elem = ebml_writer_add(writer, MATROSKA_ID_BLOCK, EBML_BLOCK); |
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elem->priv.mkv = mkv; |
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} |
|
|
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static int ebml_writer_str_len(EbmlElement *elem) |
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{ |
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size_t len = strlen(elem->priv.str); |
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#if SIZE_MAX > UINT64_MAX |
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len = FF_MIN(len, UINT64_MAX); |
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#endif |
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elem->size = len; |
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return 0; |
|
} |
|
|
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static av_const int uint_size(uint64_t val) |
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{ |
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int bytes = 0; |
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do { |
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bytes++; |
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} while (val >>= 8); |
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return bytes; |
|
} |
|
|
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static int ebml_writer_uint_len(EbmlElement *elem) |
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{ |
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elem->size = uint_size(elem->priv.uint); |
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return 0; |
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} |
|
|
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static av_const int sint_size(int64_t val) |
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{ |
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uint64_t tmp = 2 * (uint64_t)(val < 0 ? val^-1 : val); |
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return uint_size(tmp); |
|
} |
|
|
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static int ebml_writer_sint_len(EbmlElement *elem) |
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{ |
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elem->size = sint_size(elem->priv.sint); |
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return 0; |
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} |
|
|
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static int ebml_writer_elem_len(EbmlWriter *writer, EbmlElement *elem, |
|
int remaining_elems); |
|
|
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static int ebml_writer_master_len(EbmlWriter *writer, EbmlElement *elem, |
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int remaining_elems) |
|
{ |
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int nb_elems = elem->priv.master.nb_elements >= 0 ? elem->priv.master.nb_elements : remaining_elems - 1; |
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EbmlElement *const master = elem; |
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uint64_t total_size = 0; |
|
|
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master->priv.master.nb_elements = nb_elems; |
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for (; elem++, nb_elems > 0;) { |
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int ret = ebml_writer_elem_len(writer, elem, nb_elems); |
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if (ret < 0) |
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return ret; |
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av_assert2(ret < nb_elems); |
|
/* No overflow is possible here, as both total_size and elem->size |
|
* are bounded by MAX_SUPPORTED_EBML_LENGTH. */ |
|
total_size += ebml_id_size(elem->id) + elem->length_size + elem->size; |
|
if (total_size > MAX_SUPPORTED_EBML_LENGTH) |
|
return AVERROR(ERANGE); |
|
nb_elems--; /* consume elem */ |
|
elem += ret, nb_elems -= ret; /* and elem's children */ |
|
} |
|
master->size = total_size; |
|
|
|
return master->priv.master.nb_elements; |
|
} |
|
|
|
static int ebml_writer_block_len(EbmlElement *elem) |
|
{ |
|
MatroskaMuxContext *const mkv = elem->priv.mkv; |
|
BlockContext *const block = &mkv->cur_block; |
|
mkv_track *const track = block->track; |
|
const AVPacket *const pkt = block->pkt; |
|
int err, size; |
|
|
|
if (track->reformat) { |
|
err = track->reformat(mkv, NULL, pkt, &size); |
|
if (err < 0) { |
|
av_log(mkv->ctx, AV_LOG_ERROR, "Error when reformatting data of " |
|
"a packet from stream %d.\n", pkt->stream_index); |
|
return err; |
|
} |
|
} else { |
|
size = pkt->size; |
|
if (track->offset <= size) |
|
size -= track->offset; |
|
} |
|
elem->size = track->track_num_size + 3U + size; |
|
|
|
return 0; |
|
} |
|
|
|
static void ebml_writer_write_block(const EbmlElement *elem, AVIOContext *pb) |
|
{ |
|
MatroskaMuxContext *const mkv = elem->priv.mkv; |
|
BlockContext *const block = &mkv->cur_block; |
|
mkv_track *const track = block->track; |
|
const AVPacket *const pkt = block->pkt; |
|
|
|
put_ebml_num(pb, track->track_num, track->track_num_size); |
|
avio_wb16(pb, block->rel_ts); |
|
avio_w8(pb, block->flags); |
|
|
|
if (track->reformat) { |
|
int size; |
|
track->reformat(mkv, pb, pkt, &size); |
|
} else { |
|
const uint8_t *data = pkt->data; |
|
unsigned offset = track->offset <= pkt->size ? track->offset : 0; |
|
avio_write(pb, data + offset, pkt->size - offset); |
|
} |
|
} |
|
|
|
static int ebml_writer_elem_len(EbmlWriter *writer, EbmlElement *elem, |
|
int remaining_elems) |
|
{ |
|
int ret = 0; |
|
|
|
switch (elem->type) { |
|
case EBML_FLOAT: |
|
case EBML_UID: |
|
elem->size = 8; |
|
break; |
|
case EBML_STR: |
|
ret = ebml_writer_str_len(elem); |
|
break; |
|
case EBML_UINT: |
|
ret = ebml_writer_uint_len(elem); |
|
break; |
|
case EBML_SINT: |
|
ret = ebml_writer_sint_len(elem); |
|
break; |
|
case EBML_BLOCK: |
|
ret = ebml_writer_block_len(elem); |
|
break; |
|
case EBML_MASTER: |
|
ret = ebml_writer_master_len(writer, elem, remaining_elems); |
|
break; |
|
} |
|
if (ret < 0) |
|
return ret; |
|
if (elem->size > MAX_SUPPORTED_EBML_LENGTH) |
|
return AVERROR(ERANGE); |
|
elem->length_size = ebml_length_size(elem->size); |
|
return ret; /* number of elements consumed excluding elem itself */ |
|
} |
|
|
|
static int ebml_writer_elem_write(const EbmlElement *elem, AVIOContext *pb) |
|
{ |
|
put_ebml_id(pb, elem->id); |
|
put_ebml_num(pb, elem->size, elem->length_size); |
|
switch (elem->type) { |
|
case EBML_UID: |
|
case EBML_FLOAT: { |
|
uint64_t val = elem->type == EBML_UID ? elem->priv.uint |
|
: av_double2int(elem->priv.f); |
|
avio_wb64(pb, val); |
|
break; |
|
} |
|
case EBML_UINT: |
|
case EBML_SINT: { |
|
uint64_t val = elem->type == EBML_UINT ? elem->priv.uint |
|
: elem->priv.sint; |
|
for (int i = elem->size; --i >= 0; ) |
|
avio_w8(pb, (uint8_t)(val >> i * 8)); |
|
break; |
|
} |
|
case EBML_STR: |
|
case EBML_BIN: { |
|
const uint8_t *data = elem->type == EBML_BIN ? elem->priv.bin |
|
: (const uint8_t*)elem->priv.str; |
|
avio_write(pb, data, elem->size); |
|
break; |
|
} |
|
case EBML_BLOCK: |
|
ebml_writer_write_block(elem, pb); |
|
break; |
|
case EBML_MASTER: { |
|
int nb_elems = elem->priv.master.nb_elements; |
|
|
|
elem++; |
|
for (int i = 0; i < nb_elems; i++) |
|
i += ebml_writer_elem_write(elem + i, pb); |
|
|
|
return nb_elems; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static int ebml_writer_write(EbmlWriter *writer, AVIOContext *pb) |
|
{ |
|
int ret = ebml_writer_elem_len(writer, writer->elements, |
|
writer->nb_elements); |
|
if (ret < 0) |
|
return ret; |
|
ebml_writer_elem_write(writer->elements, pb); |
|
return 0; |
|
} |
|
|
|
static void mkv_add_seekhead_entry(MatroskaMuxContext *mkv, uint32_t elementid, |
|
uint64_t filepos) |
|
{ |
|
mkv_seekhead *seekhead = &mkv->seekhead; |
|
|
|
av_assert1(seekhead->num_entries < MAX_SEEKHEAD_ENTRIES); |
|
|
|
seekhead->entries[seekhead->num_entries].elementid = elementid; |
|
seekhead->entries[seekhead->num_entries++].segmentpos = filepos - mkv->segment_offset; |
|
} |
|
|
|
static int start_ebml_master_crc32(AVIOContext **dyn_cp, MatroskaMuxContext *mkv) |
|
{ |
|
int ret; |
|
|
|
if (!*dyn_cp && (ret = avio_open_dyn_buf(dyn_cp)) < 0) |
|
return ret; |
|
|
|
if (mkv->write_crc) |
|
put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */ |
|
|
|
return 0; |
|
} |
|
|
|
static int end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, |
|
MatroskaMuxContext *mkv, uint32_t id, |
|
int length_size, int keep_buffer, |
|
int add_seekentry) |
|
{ |
|
uint8_t *buf, crc[4]; |
|
int ret, size, skip = 0; |
|
|
|
size = avio_get_dyn_buf(*dyn_cp, &buf); |
|
if ((ret = (*dyn_cp)->error) < 0) |
|
goto fail; |
|
|
|
if (add_seekentry) |
|
mkv_add_seekhead_entry(mkv, id, avio_tell(pb)); |
|
|
|
put_ebml_id(pb, id); |
|
put_ebml_length(pb, size, length_size); |
|
if (mkv->write_crc) { |
|
skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */ |
|
AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX); |
|
put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc)); |
|
} |
|
avio_write(pb, buf + skip, size - skip); |
|
|
|
fail: |
|
if (keep_buffer) { |
|
ffio_reset_dyn_buf(*dyn_cp); |
|
} else { |
|
ffio_free_dyn_buf(dyn_cp); |
|
} |
|
return ret; |
|
} |
|
|
|
/** |
|
* Output EBML master. Keep the buffer if seekable, allowing for later updates. |
|
* Furthermore always add a SeekHead Entry for this element. |
|
*/ |
|
static int end_ebml_master_crc32_tentatively(AVIOContext *pb, |
|
ebml_stored_master *elem, |
|
MatroskaMuxContext *mkv, uint32_t id) |
|
{ |
|
if (IS_SEEKABLE(pb, mkv)) { |
|
uint8_t *buf; |
|
int size = avio_get_dyn_buf(elem->bc, &buf); |
|
|
|
if (elem->bc->error < 0) |
|
return elem->bc->error; |
|
|
|
elem->pos = avio_tell(pb); |
|
mkv_add_seekhead_entry(mkv, id, elem->pos); |
|
|
|
put_ebml_id(pb, id); |
|
put_ebml_length(pb, size, 0); |
|
avio_write(pb, buf, size); |
|
|
|
return 0; |
|
} else |
|
return end_ebml_master_crc32(pb, &elem->bc, mkv, id, 0, 0, 1); |
|
} |
|
|
|
static void put_xiph_size(AVIOContext *pb, int size) |
|
{ |
|
ffio_fill(pb, 255, size / 255); |
|
avio_w8(pb, size % 255); |
|
} |
|
|
|
/** |
|
* Free the members allocated in the mux context. |
|
*/ |
|
static void mkv_deinit(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
|
|
ffio_free_dyn_buf(&mkv->cluster_bc); |
|
ffio_free_dyn_buf(&mkv->info.bc); |
|
ffio_free_dyn_buf(&mkv->track.bc); |
|
ffio_free_dyn_buf(&mkv->tags.bc); |
|
|
|
av_freep(&mkv->cur_block.h2645_nalu_list.nalus); |
|
av_freep(&mkv->cues.entries); |
|
av_freep(&mkv->tracks); |
|
} |
|
|
|
/** |
|
* Initialize the SeekHead element to be ready to index level 1 Matroska |
|
* elements. Enough space to write MAX_SEEKHEAD_ENTRIES SeekHead entries |
|
* will be reserved at the current file location. |
|
*/ |
|
static void mkv_start_seekhead(MatroskaMuxContext *mkv, AVIOContext *pb) |
|
{ |
|
mkv->seekhead.filepos = avio_tell(pb); |
|
// 21 bytes max for a Seek entry, 6 bytes max for the SeekHead ID |
|
// and size, 6 bytes for a CRC32 element, and 2 bytes to guarantee |
|
// that an EBML void element will fit afterwards |
|
mkv->seekhead.reserved_size = MAX_SEEKHEAD_ENTRIES * MAX_SEEKENTRY_SIZE + 14; |
|
put_ebml_void(pb, mkv->seekhead.reserved_size); |
|
} |
|
|
|
/** |
|
* Write the SeekHead to the file at the location reserved for it |
|
* and seek to destpos afterwards. When error_on_seek_failure |
|
* is not set, failure to seek to the position designated for the |
|
* SeekHead is not considered an error and it is presumed that |
|
* destpos is the current position; failure to seek to destpos |
|
* afterwards is always an error. |
|
* |
|
* @return 0 on success, < 0 on error. |
|
*/ |
|
static int mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv, |
|
int error_on_seek_failure, int64_t destpos) |
|
{ |
|
AVIOContext *dyn_cp = NULL; |
|
mkv_seekhead *seekhead = &mkv->seekhead; |
|
int64_t remaining, ret64; |
|
int i, ret; |
|
|
|
if ((ret64 = avio_seek(pb, seekhead->filepos, SEEK_SET)) < 0) |
|
return error_on_seek_failure ? ret64 : 0; |
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv); |
|
if (ret < 0) |
|
return ret; |
|
|
|
for (i = 0; i < seekhead->num_entries; i++) { |
|
mkv_seekhead_entry *entry = &seekhead->entries[i]; |
|
ebml_master seekentry = start_ebml_master(dyn_cp, MATROSKA_ID_SEEKENTRY, |
|
MAX_SEEKENTRY_SIZE); |
|
|
|
put_ebml_id(dyn_cp, MATROSKA_ID_SEEKID); |
|
put_ebml_length(dyn_cp, ebml_id_size(entry->elementid), 0); |
|
put_ebml_id(dyn_cp, entry->elementid); |
|
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_SEEKPOSITION, entry->segmentpos); |
|
end_ebml_master(dyn_cp, seekentry); |
|
} |
|
ret = end_ebml_master_crc32(pb, &dyn_cp, mkv, |
|
MATROSKA_ID_SEEKHEAD, 0, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
|
|
remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb); |
|
put_ebml_void(pb, remaining); |
|
|
|
if ((ret64 = avio_seek(pb, destpos, SEEK_SET)) < 0) |
|
return ret64; |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_add_cuepoint(MatroskaMuxContext *mkv, int stream, int64_t ts, |
|
int64_t cluster_pos, int64_t relative_pos, int64_t duration) |
|
{ |
|
mkv_cues *cues = &mkv->cues; |
|
mkv_cuepoint *entries = cues->entries; |
|
unsigned idx = cues->num_entries; |
|
|
|
if (ts < 0) |
|
return 0; |
|
|
|
entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint)); |
|
if (!entries) |
|
return AVERROR(ENOMEM); |
|
cues->entries = entries; |
|
|
|
/* Make sure the cues entries are sorted by pts. */ |
|
while (idx > 0 && entries[idx - 1].pts > ts) |
|
idx--; |
|
memmove(&entries[idx + 1], &entries[idx], |
|
(cues->num_entries - idx) * sizeof(entries[0])); |
|
|
|
entries[idx].pts = ts; |
|
entries[idx].stream_idx = stream; |
|
entries[idx].cluster_pos = cluster_pos - mkv->segment_offset; |
|
entries[idx].relative_pos = relative_pos; |
|
entries[idx].duration = duration; |
|
|
|
cues->num_entries++; |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp, |
|
const mkv_cues *cues, mkv_track *tracks, int num_tracks, |
|
uint64_t offset) |
|
{ |
|
AVIOContext *cuepoint; |
|
int ret; |
|
|
|
ret = avio_open_dyn_buf(&cuepoint); |
|
if (ret < 0) |
|
return ret; |
|
|
|
for (mkv_cuepoint *entry = cues->entries, *end = entry + cues->num_entries; |
|
entry < end;) { |
|
uint64_t pts = entry->pts; |
|
uint8_t *buf; |
|
int size; |
|
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUETIME, pts); |
|
|
|
// put all the entries from different tracks that have the exact same |
|
// timestamp into the same CuePoint |
|
for (int j = 0; j < num_tracks; j++) |
|
tracks[j].has_cue = 0; |
|
do { |
|
ebml_master track_positions; |
|
int idx = entry->stream_idx; |
|
|
|
av_assert0(idx >= 0 && idx < num_tracks); |
|
if (tracks[idx].has_cue && streams[idx]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) |
|
continue; |
|
tracks[idx].has_cue = 1; |
|
track_positions = start_ebml_master(cuepoint, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE); |
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUETRACK , tracks[idx].track_num); |
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUECLUSTERPOSITION , entry->cluster_pos + offset); |
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUERELATIVEPOSITION, entry->relative_pos); |
|
if (entry->duration > 0) |
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUEDURATION , entry->duration); |
|
end_ebml_master(cuepoint, track_positions); |
|
} while (++entry < end && entry->pts == pts); |
|
size = avio_get_dyn_buf(cuepoint, &buf); |
|
if ((ret = cuepoint->error) < 0) |
|
break; |
|
put_ebml_binary(dyn_cp, MATROSKA_ID_POINTENTRY, buf, size); |
|
ffio_reset_dyn_buf(cuepoint); |
|
} |
|
ffio_free_dyn_buf(&cuepoint); |
|
|
|
return ret; |
|
} |
|
|
|
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, |
|
const AVCodecParameters *par) |
|
{ |
|
const uint8_t *header_start[3]; |
|
int header_len[3]; |
|
int first_header_size; |
|
int err, j; |
|
|
|
if (par->codec_id == AV_CODEC_ID_VORBIS) |
|
first_header_size = 30; |
|
else |
|
first_header_size = 42; |
|
|
|
err = avpriv_split_xiph_headers(par->extradata, par->extradata_size, |
|
first_header_size, header_start, header_len); |
|
if (err < 0) { |
|
av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n"); |
|
return err; |
|
} |
|
|
|
avio_w8(pb, 2); // number packets - 1 |
|
for (j = 0; j < 2; j++) { |
|
put_xiph_size(pb, header_len[j]); |
|
} |
|
for (j = 0; j < 3; j++) |
|
avio_write(pb, header_start[j], header_len[j]); |
|
|
|
return 0; |
|
} |
|
|
|
#if CONFIG_MATROSKA_MUXER |
|
static int put_wv_codecpriv(AVIOContext *pb, const AVCodecParameters *par) |
|
{ |
|
if (par->extradata && par->extradata_size == 2) |
|
avio_write(pb, par->extradata, 2); |
|
else |
|
avio_wl16(pb, 0x410); // fallback to the most recent version |
|
return 0; |
|
} |
|
|
|
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, |
|
const AVCodecParameters *par) |
|
{ |
|
int write_comment = (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE && |
|
!(par->ch_layout.u.mask & ~0x3ffffULL) && |
|
!ff_flac_is_native_layout(par->ch_layout.u.mask)); |
|
int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size, |
|
!write_comment); |
|
|
|
if (ret < 0) |
|
return ret; |
|
|
|
if (write_comment) { |
|
const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ? |
|
"Lavf" : LIBAVFORMAT_IDENT; |
|
AVDictionary *dict = NULL; |
|
uint8_t buf[32]; |
|
int64_t len; |
|
|
|
snprintf(buf, sizeof(buf), "0x%"PRIx64, par->ch_layout.u.mask); |
|
av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0); |
|
|
|
len = ff_vorbiscomment_length(dict, vendor, NULL, 0); |
|
av_assert1(len < (1 << 24) - 4); |
|
|
|
avio_w8(pb, 0x84); |
|
avio_wb24(pb, len); |
|
|
|
ff_vorbiscomment_write(pb, dict, vendor, NULL, 0); |
|
|
|
av_dict_free(&dict); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int get_aac_sample_rates(AVFormatContext *s, MatroskaMuxContext *mkv, |
|
const uint8_t *extradata, int extradata_size, |
|
int *sample_rate, int *output_sample_rate) |
|
{ |
|
MPEG4AudioConfig mp4ac; |
|
int ret; |
|
|
|
ret = avpriv_mpeg4audio_get_config2(&mp4ac, extradata, extradata_size, 1, s); |
|
/* Don't abort if the failure is because of missing extradata. Assume in that |
|
* case a bitstream filter will provide the muxer with the extradata in the |
|
* first packet. |
|
* Abort however if s->pb is not seekable, as we would not be able to seek back |
|
* to write the sample rate elements once the extradata shows up, anyway. */ |
|
if (ret < 0 && (extradata_size || !IS_SEEKABLE(s->pb, mkv))) { |
|
av_log(s, AV_LOG_ERROR, |
|
"Error parsing AAC extradata, unable to determine samplerate.\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
if (ret < 0) { |
|
/* This will only happen when this function is called while writing the |
|
* header and no extradata is available. The space for this element has |
|
* to be reserved for when this function is called again after the |
|
* extradata shows up in the first packet, as there's no way to know if |
|
* output_sample_rate will be different than sample_rate or not. */ |
|
*output_sample_rate = *sample_rate; |
|
} else { |
|
*sample_rate = mp4ac.sample_rate; |
|
*output_sample_rate = mp4ac.ext_sample_rate; |
|
} |
|
return 0; |
|
} |
|
#endif |
|
|
|
static int mkv_write_native_codecprivate(AVFormatContext *s, AVIOContext *pb, |
|
const AVCodecParameters *par, |
|
AVIOContext *dyn_cp) |
|
{ |
|
switch (par->codec_id) { |
|
case AV_CODEC_ID_VORBIS: |
|
case AV_CODEC_ID_THEORA: |
|
return put_xiph_codecpriv(s, dyn_cp, par); |
|
case AV_CODEC_ID_AV1: |
|
if (par->extradata_size) |
|
return ff_isom_write_av1c(dyn_cp, par->extradata, |
|
par->extradata_size, 1); |
|
else |
|
put_ebml_void(pb, 4 + 3); |
|
break; |
|
#if CONFIG_MATROSKA_MUXER |
|
case AV_CODEC_ID_FLAC: |
|
return put_flac_codecpriv(s, dyn_cp, par); |
|
case AV_CODEC_ID_WAVPACK: |
|
return put_wv_codecpriv(dyn_cp, par); |
|
case AV_CODEC_ID_H264: |
|
return ff_isom_write_avcc(dyn_cp, par->extradata, |
|
par->extradata_size); |
|
case AV_CODEC_ID_HEVC: |
|
return ff_isom_write_hvcc(dyn_cp, par->extradata, |
|
par->extradata_size, 0); |
|
case AV_CODEC_ID_ALAC: |
|
if (par->extradata_size < 36) { |
|
av_log(s, AV_LOG_ERROR, |
|
"Invalid extradata found, ALAC expects a 36-byte " |
|
"QuickTime atom."); |
|
return AVERROR_INVALIDDATA; |
|
} else |
|
avio_write(dyn_cp, par->extradata + 12, |
|
par->extradata_size - 12); |
|
break; |
|
case AV_CODEC_ID_AAC: |
|
if (par->extradata_size) |
|
avio_write(dyn_cp, par->extradata, par->extradata_size); |
|
else |
|
put_ebml_void(pb, MAX_PCE_SIZE + 2 + 4); |
|
break; |
|
#endif |
|
default: |
|
if (CONFIG_MATROSKA_MUXER && par->codec_id == AV_CODEC_ID_PRORES && |
|
ff_codec_get_id(ff_codec_movvideo_tags, par->codec_tag) == AV_CODEC_ID_PRORES) { |
|
avio_wl32(dyn_cp, par->codec_tag); |
|
} else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA) |
|
avio_write(dyn_cp, par->extradata, par->extradata_size); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, |
|
AVCodecParameters *par, |
|
int native_id, int qt_id) |
|
{ |
|
MatroskaMuxContext av_unused *const mkv = s->priv_data; |
|
AVIOContext *dyn_cp; |
|
uint8_t *codecpriv; |
|
int ret, codecpriv_size; |
|
|
|
ret = avio_open_dyn_buf(&dyn_cp); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (native_id) { |
|
ret = mkv_write_native_codecprivate(s, pb, par, dyn_cp); |
|
#if CONFIG_MATROSKA_MUXER |
|
} else if (par->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
if (qt_id) { |
|
if (!par->codec_tag) |
|
par->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags, |
|
par->codec_id); |
|
if ( ff_codec_get_id(ff_codec_movvideo_tags, par->codec_tag) == par->codec_id |
|
&& (!par->extradata_size || ff_codec_get_id(ff_codec_movvideo_tags, AV_RL32(par->extradata + 4)) != par->codec_id) |
|
) { |
|
avio_wb32(dyn_cp, 0x5a + par->extradata_size); |
|
avio_wl32(dyn_cp, par->codec_tag); |
|
ffio_fill(dyn_cp, 0, 0x5a - 8); |
|
} |
|
avio_write(dyn_cp, par->extradata, par->extradata_size); |
|
} else { |
|
if (!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id)) |
|
av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n", |
|
avcodec_get_name(par->codec_id)); |
|
|
|
if (!par->codec_tag) |
|
par->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, |
|
par->codec_id); |
|
if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) { |
|
av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n", |
|
avcodec_get_name(par->codec_id)); |
|
ret = AVERROR(EINVAL); |
|
} |
|
|
|
ff_put_bmp_header(dyn_cp, par, 0, 0, mkv->flipped_raw_rgb); |
|
} |
|
} else if (par->codec_type == AVMEDIA_TYPE_AUDIO) { |
|
unsigned int tag; |
|
tag = ff_codec_get_tag(ff_codec_wav_tags, par->codec_id); |
|
if (!tag) { |
|
av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n", |
|
avcodec_get_name(par->codec_id)); |
|
ret = AVERROR(EINVAL); |
|
} |
|
if (!par->codec_tag) |
|
par->codec_tag = tag; |
|
|
|
ff_put_wav_header(s, dyn_cp, par, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX); |
|
#endif |
|
} |
|
|
|
if (ret >= 0) { |
|
codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv); |
|
if ((ret = dyn_cp->error) >= 0 && codecpriv_size) |
|
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, |
|
codecpriv_size); |
|
} |
|
ffio_free_dyn_buf(&dyn_cp); |
|
return ret; |
|
} |
|
|
|
#define MAX_VIDEO_COLOR_ELEMS 20 |
|
static void mkv_write_video_color(EbmlWriter *writer, const AVStream *st, |
|
const AVCodecParameters *par) |
|
{ |
|
const void *side_data; |
|
|
|
ebml_writer_open_master(writer, MATROSKA_ID_VIDEOCOLOR); |
|
|
|
if (par->color_trc != AVCOL_TRC_UNSPECIFIED && |
|
par->color_trc < AVCOL_TRC_NB) { |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS, |
|
par->color_trc); |
|
} |
|
if (par->color_space != AVCOL_SPC_UNSPECIFIED && |
|
par->color_space < AVCOL_SPC_NB) { |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORMATRIXCOEFF, |
|
par->color_space); |
|
} |
|
if (par->color_primaries != AVCOL_PRI_UNSPECIFIED && |
|
par->color_primaries < AVCOL_PRI_NB) { |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORPRIMARIES, |
|
par->color_primaries); |
|
} |
|
if (par->color_range != AVCOL_RANGE_UNSPECIFIED && |
|
par->color_range < AVCOL_RANGE_NB) { |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORRANGE, par->color_range); |
|
} |
|
if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED && |
|
par->chroma_location <= AVCHROMA_LOC_TOP) { |
|
int xpos, ypos; |
|
|
|
avcodec_enum_to_chroma_pos(&xpos, &ypos, par->chroma_location); |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, |
|
(xpos >> 7) + 1); |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, |
|
(ypos >> 7) + 1); |
|
} |
|
|
|
side_data = av_stream_get_side_data(st, AV_PKT_DATA_CONTENT_LIGHT_LEVEL, |
|
NULL); |
|
if (side_data) { |
|
const AVContentLightMetadata *metadata = side_data; |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORMAXCLL, |
|
metadata->MaxCLL); |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORMAXFALL, |
|
metadata->MaxFALL); |
|
} |
|
|
|
side_data = av_stream_get_side_data(st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, |
|
NULL); |
|
if (side_data) { |
|
const AVMasteringDisplayMetadata *metadata = side_data; |
|
ebml_writer_open_master(writer, MATROSKA_ID_VIDEOCOLORMASTERINGMETA); |
|
if (metadata->has_primaries) { |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_RX, |
|
av_q2d(metadata->display_primaries[0][0])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_RY, |
|
av_q2d(metadata->display_primaries[0][1])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_GX, |
|
av_q2d(metadata->display_primaries[1][0])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_GY, |
|
av_q2d(metadata->display_primaries[1][1])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_BX, |
|
av_q2d(metadata->display_primaries[2][0])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_BY, |
|
av_q2d(metadata->display_primaries[2][1])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_WHITEX, |
|
av_q2d(metadata->white_point[0])); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_WHITEY, |
|
av_q2d(metadata->white_point[1])); |
|
} |
|
if (metadata->has_luminance) { |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX, |
|
av_q2d(metadata->max_luminance)); |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN, |
|
av_q2d(metadata->min_luminance)); |
|
} |
|
ebml_writer_close_or_discard_master(writer); |
|
} |
|
|
|
ebml_writer_close_or_discard_master(writer); |
|
} |
|
|
|
#define MAX_VIDEO_PROJECTION_ELEMS 6 |
|
static void mkv_write_video_projection(AVFormatContext *s, EbmlWriter *writer, |
|
const AVStream *st, uint8_t private[]) |
|
{ |
|
const AVSphericalMapping *spherical = |
|
(const AVSphericalMapping *)av_stream_get_side_data(st, AV_PKT_DATA_SPHERICAL, |
|
NULL); |
|
|
|
if (!spherical) |
|
return; |
|
|
|
if (spherical->projection != AV_SPHERICAL_EQUIRECTANGULAR && |
|
spherical->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE && |
|
spherical->projection != AV_SPHERICAL_CUBEMAP) { |
|
av_log(s, AV_LOG_WARNING, "Unknown projection type\n"); |
|
return; |
|
} |
|
|
|
ebml_writer_open_master(writer, MATROSKA_ID_VIDEOPROJECTION); |
|
|
|
switch (spherical->projection) { |
|
case AV_SPHERICAL_EQUIRECTANGULAR: |
|
case AV_SPHERICAL_EQUIRECTANGULAR_TILE: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOPROJECTIONTYPE, |
|
MATROSKA_VIDEO_PROJECTION_TYPE_EQUIRECTANGULAR); |
|
AV_WB32(private, 0); // version + flags |
|
if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR) { |
|
AV_WB32(private + 4, 0); |
|
AV_WB32(private + 8, 0); |
|
AV_WB32(private + 12, 0); |
|
AV_WB32(private + 16, 0); |
|
} else { |
|
AV_WB32(private + 4, spherical->bound_top); |
|
AV_WB32(private + 8, spherical->bound_bottom); |
|
AV_WB32(private + 12, spherical->bound_left); |
|
AV_WB32(private + 16, spherical->bound_right); |
|
} |
|
ebml_writer_add_bin(writer, MATROSKA_ID_VIDEOPROJECTIONPRIVATE, |
|
private, 20); |
|
break; |
|
case AV_SPHERICAL_CUBEMAP: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOPROJECTIONTYPE, |
|
MATROSKA_VIDEO_PROJECTION_TYPE_CUBEMAP); |
|
AV_WB32(private, 0); // version + flags |
|
AV_WB32(private + 4, 0); // layout |
|
AV_WB32(private + 8, spherical->padding); |
|
ebml_writer_add_bin(writer, MATROSKA_ID_VIDEOPROJECTIONPRIVATE, |
|
private, 12); |
|
break; |
|
default: |
|
av_assert0(0); |
|
} |
|
|
|
if (spherical->yaw) |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOPROJECTIONPOSEYAW, |
|
(double) spherical->yaw / (1 << 16)); |
|
if (spherical->pitch) |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH, |
|
(double) spherical->pitch / (1 << 16)); |
|
if (spherical->roll) |
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOPROJECTIONPOSEROLL, |
|
(double) spherical->roll / (1 << 16)); |
|
|
|
ebml_writer_close_master(writer); |
|
} |
|
|
|
#define MAX_FIELD_ORDER_ELEMS 2 |
|
static void mkv_write_field_order(EbmlWriter *writer, int is_webm, |
|
enum AVFieldOrder field_order) |
|
{ |
|
switch (field_order) { |
|
case AV_FIELD_UNKNOWN: |
|
break; |
|
case AV_FIELD_PROGRESSIVE: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFLAGINTERLACED, |
|
MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE); |
|
break; |
|
case AV_FIELD_TT: |
|
case AV_FIELD_BB: |
|
case AV_FIELD_TB: |
|
case AV_FIELD_BT: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFLAGINTERLACED, |
|
MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED); |
|
if (!is_webm) { |
|
switch (field_order) { |
|
case AV_FIELD_TT: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER, |
|
MATROSKA_VIDEO_FIELDORDER_TT); |
|
break; |
|
case AV_FIELD_BB: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER, |
|
MATROSKA_VIDEO_FIELDORDER_BB); |
|
break; |
|
case AV_FIELD_TB: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER, |
|
MATROSKA_VIDEO_FIELDORDER_TB); |
|
break; |
|
case AV_FIELD_BT: |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER, |
|
MATROSKA_VIDEO_FIELDORDER_BT); |
|
break; |
|
} |
|
} |
|
} |
|
} |
|
|
|
#define MAX_STEREO_MODE_ELEMS 1 |
|
static int mkv_write_stereo_mode(AVFormatContext *s, EbmlWriter *writer, |
|
AVStream *st, int is_webm, |
|
int *h_width, int *h_height) |
|
{ |
|
const AVDictionaryEntry *tag; |
|
MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB; |
|
const AVStereo3D *stereo; |
|
|
|
*h_width = 1; |
|
*h_height = 1; |
|
// convert metadata into proper side data and add it to the stream |
|
if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) || |
|
(tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) { |
|
int stereo_mode = atoi(tag->value); |
|
|
|
for (int i = 0; i < MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++) |
|
if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){ |
|
stereo_mode = i; |
|
break; |
|
} |
|
|
|
if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB && |
|
stereo_mode != 10 && stereo_mode != 12) { |
|
int ret = ff_mkv_stereo3d_conv(st, stereo_mode); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} |
|
|
|
stereo = (const AVStereo3D*)av_stream_get_side_data(st, AV_PKT_DATA_STEREO3D, |
|
NULL); |
|
if (stereo) { |
|
switch (stereo->type) { |
|
case AV_STEREO3D_2D: |
|
format = MATROSKA_VIDEO_STEREOMODE_TYPE_MONO; |
|
break; |
|
case AV_STEREO3D_SIDEBYSIDE: |
|
format = (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
|
? MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT |
|
: MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT; |
|
*h_width = 2; |
|
break; |
|
case AV_STEREO3D_TOPBOTTOM: |
|
format = MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM; |
|
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
|
format--; |
|
*h_height = 2; |
|
break; |
|
case AV_STEREO3D_CHECKERBOARD: |
|
format = MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR; |
|
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
|
format--; |
|
break; |
|
case AV_STEREO3D_LINES: |
|
format = MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR; |
|
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
|
format--; |
|
*h_height = 2; |
|
break; |
|
case AV_STEREO3D_COLUMNS: |
|
format = MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR; |
|
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
|
format--; |
|
*h_width = 2; |
|
break; |
|
case AV_STEREO3D_FRAMESEQUENCE: |
|
format = MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR; |
|
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
|
format++; |
|
break; |
|
} |
|
} |
|
|
|
if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB) |
|
return 0; |
|
|
|
// if webm, do not write unsupported modes |
|
if ((is_webm && |
|
format > MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM && |
|
format != MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT) |
|
|| format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) { |
|
av_log(s, AV_LOG_ERROR, |
|
"The specified stereo mode is not valid.\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
// write StereoMode if format is valid |
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOSTEREOMODE, format); |
|
|
|
return 0; |
|
} |
|
|
|
static void mkv_write_dovi(AVFormatContext *s, AVIOContext *pb, AVStream *st) |
|
{ |
|
#if CONFIG_MATROSKA_MUXER |
|
AVDOVIDecoderConfigurationRecord *dovi = (AVDOVIDecoderConfigurationRecord *) |
|
av_stream_get_side_data(st, AV_PKT_DATA_DOVI_CONF, NULL); |
|
|
|
if (dovi && dovi->dv_profile <= 10) { |
|
ebml_master mapping; |
|
uint8_t buf[ISOM_DVCC_DVVC_SIZE]; |
|
uint32_t type; |
|
|
|
uint64_t expected_size = (2 + 1 + (sizeof(DVCC_DVVC_BLOCK_TYPE_NAME) - 1)) |
|
+ (2 + 1 + 4) + (2 + 1 + ISOM_DVCC_DVVC_SIZE); |
|
|
|
if (dovi->dv_profile > 7) { |
|
type = MKBETAG('d', 'v', 'v', 'C'); |
|
} else { |
|
type = MKBETAG('d', 'v', 'c', 'C'); |
|
} |
|
|
|
ff_isom_put_dvcc_dvvc(s, buf, dovi); |
|
|
|
mapping = start_ebml_master(pb, MATROSKA_ID_TRACKBLKADDMAPPING, expected_size); |
|
|
|
put_ebml_string(pb, MATROSKA_ID_BLKADDIDNAME, DVCC_DVVC_BLOCK_TYPE_NAME); |
|
put_ebml_uint(pb, MATROSKA_ID_BLKADDIDTYPE, type); |
|
put_ebml_binary(pb, MATROSKA_ID_BLKADDIDEXTRADATA, buf, sizeof(buf)); |
|
|
|
end_ebml_master(pb, mapping); |
|
} |
|
#endif |
|
} |
|
|
|
static int mkv_write_track_video(AVFormatContext *s, MatroskaMuxContext *mkv, |
|
AVStream *st, const AVCodecParameters *par, |
|
AVIOContext *pb) |
|
{ |
|
const AVDictionaryEntry *tag; |
|
int display_width_div = 1, display_height_div = 1; |
|
uint8_t color_space[4], projection_private[20]; |
|
EBML_WRITER(MAX_FIELD_ORDER_ELEMS + MAX_STEREO_MODE_ELEMS + |
|
MAX_VIDEO_COLOR_ELEMS + MAX_VIDEO_PROJECTION_ELEMS + 8); |
|
int ret; |
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_TRACKVIDEO); |
|
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELWIDTH , par->width); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height); |
|
|
|
mkv_write_field_order(&writer, IS_WEBM(mkv), par->field_order); |
|
|
|
// check both side data and metadata for stereo information, |
|
// write the result to the bitstream if any is found |
|
ret = mkv_write_stereo_mode(s, &writer, st, IS_WEBM(mkv), |
|
&display_width_div, |
|
&display_height_div); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) || |
|
((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) || |
|
(par->format == AV_PIX_FMT_YUVA420P)) { |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOALPHAMODE, 1); |
|
} |
|
|
|
// write DisplayWidth and DisplayHeight, they contain the size of |
|
// a single source view and/or the display aspect ratio |
|
if (st->sample_aspect_ratio.num) { |
|
int64_t d_width = av_rescale(par->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den); |
|
if (d_width > INT_MAX) { |
|
av_log(s, AV_LOG_ERROR, "Overflow in display width\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
if (d_width != par->width || display_width_div != 1 || display_height_div != 1) { |
|
if (IS_WEBM(mkv) || display_width_div != 1 || display_height_div != 1) { |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYWIDTH, |
|
d_width / display_width_div); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYHEIGHT, |
|
par->height / display_height_div); |
|
} else { |
|
AVRational display_aspect_ratio; |
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, |
|
par->width * (int64_t)st->sample_aspect_ratio.num, |
|
par->height * (int64_t)st->sample_aspect_ratio.den, |
|
1024 * 1024); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYWIDTH, |
|
display_aspect_ratio.num); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYHEIGHT, |
|
display_aspect_ratio.den); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYUNIT, |
|
MATROSKA_VIDEO_DISPLAYUNIT_DAR); |
|
} |
|
} |
|
} else if (display_width_div != 1 || display_height_div != 1) { |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYWIDTH, |
|
par->width / display_width_div); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYHEIGHT, |
|
par->height / display_height_div); |
|
} else if (!IS_WEBM(mkv)) |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYUNIT, |
|
MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN); |
|
|
|
if (par->codec_id == AV_CODEC_ID_RAWVIDEO) { |
|
AV_WL32(color_space, par->codec_tag); |
|
ebml_writer_add_bin(&writer, MATROSKA_ID_VIDEOCOLORSPACE, |
|
color_space, sizeof(color_space)); |
|
} |
|
mkv_write_video_color(&writer, st, par); |
|
mkv_write_video_projection(s, &writer, st, projection_private); |
|
|
|
return ebml_writer_write(&writer, pb); |
|
} |
|
|
|
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, |
|
AVStream *st, mkv_track *track, AVIOContext *pb, |
|
int is_default) |
|
{ |
|
AVCodecParameters *par = st->codecpar; |
|
ebml_master subinfo, track_master; |
|
int native_id = 0; |
|
int qt_id = 0; |
|
int bit_depth; |
|
int sample_rate = par->sample_rate; |
|
int output_sample_rate = 0; |
|
int j, ret; |
|
const AVDictionaryEntry *tag; |
|
|
|
if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) |
|
return 0; |
|
|
|
track_master = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0); |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKNUMBER, track->track_num); |
|
put_ebml_uid (pb, MATROSKA_ID_TRACKUID, track->uid); |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGLACING, 0); // no lacing (yet) |
|
|
|
if ((tag = av_dict_get(st->metadata, "title", NULL, 0))) |
|
put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value); |
|
tag = av_dict_get(st->metadata, "language", NULL, 0); |
|
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, |
|
tag && tag->value[0] ? tag->value : "und"); |
|
|
|
// The default value for TRACKFLAGDEFAULT is 1, so add element |
|
// if we need to clear it. |
|
if (!is_default) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, 0); |
|
|
|
if (st->disposition & AV_DISPOSITION_FORCED) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1); |
|
|
|
if (IS_WEBM(mkv)) { |
|
const char *codec_id; |
|
if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) { |
|
for (j = 0; ff_webm_codec_tags[j].id != AV_CODEC_ID_NONE; j++) { |
|
if (ff_webm_codec_tags[j].id == par->codec_id) { |
|
codec_id = ff_webm_codec_tags[j].str; |
|
native_id = 1; |
|
break; |
|
} |
|
} |
|
} else if (par->codec_id == AV_CODEC_ID_WEBVTT) { |
|
if (st->disposition & AV_DISPOSITION_CAPTIONS) { |
|
codec_id = "D_WEBVTT/CAPTIONS"; |
|
native_id = MATROSKA_TRACK_TYPE_SUBTITLE; |
|
} else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) { |
|
codec_id = "D_WEBVTT/DESCRIPTIONS"; |
|
native_id = MATROSKA_TRACK_TYPE_METADATA; |
|
} else if (st->disposition & AV_DISPOSITION_METADATA) { |
|
codec_id = "D_WEBVTT/METADATA"; |
|
native_id = MATROSKA_TRACK_TYPE_METADATA; |
|
} else { |
|
codec_id = "D_WEBVTT/SUBTITLES"; |
|
native_id = MATROSKA_TRACK_TYPE_SUBTITLE; |
|
} |
|
} |
|
|
|
if (!native_id) { |
|
av_log(s, AV_LOG_ERROR, |
|
"Only VP8 or VP9 or AV1 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id); |
|
} else { |
|
if (st->disposition & AV_DISPOSITION_COMMENT) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGCOMMENTARY, 1); |
|
if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGHEARINGIMPAIRED, 1); |
|
if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGVISUALIMPAIRED, 1); |
|
if (st->disposition & (AV_DISPOSITION_ORIGINAL | AV_DISPOSITION_DUB) && |
|
(st->disposition & (AV_DISPOSITION_ORIGINAL | AV_DISPOSITION_DUB)) |
|
!= (AV_DISPOSITION_ORIGINAL | AV_DISPOSITION_DUB)) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGORIGINAL, |
|
!!(st->disposition & AV_DISPOSITION_ORIGINAL)); |
|
|
|
// look for a codec ID string specific to mkv to use, |
|
// if none are found, use AVI codes |
|
if (par->codec_id != AV_CODEC_ID_RAWVIDEO || par->codec_tag) { |
|
for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) { |
|
if (ff_mkv_codec_tags[j].id == par->codec_id && par->codec_id != AV_CODEC_ID_FFV1) { |
|
put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str); |
|
native_id = 1; |
|
break; |
|
} |
|
} |
|
} else { |
|
if (mkv->allow_raw_vfw) { |
|
native_id = 0; |
|
} else { |
|
av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n" |
|
"If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
} |
|
} |
|
|
|
switch (par->codec_type) { |
|
case AVMEDIA_TYPE_VIDEO: |
|
mkv->have_video = 1; |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO); |
|
|
|
if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0 |
|
&& av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->avg_frame_rate.den / st->avg_frame_rate.num); |
|
else if( st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0 |
|
&& av_cmp_q(av_inv_q(st->r_frame_rate), st->time_base) > 0) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->r_frame_rate.den / st->r_frame_rate.num); |
|
|
|
if (CONFIG_MATROSKA_MUXER && !native_id && |
|
ff_codec_get_tag(ff_codec_movvideo_tags, par->codec_id) && |
|
((!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id) && par->codec_id != AV_CODEC_ID_RAWVIDEO) || |
|
par->codec_id == AV_CODEC_ID_SVQ1 || |
|
par->codec_id == AV_CODEC_ID_SVQ3 || |
|
par->codec_id == AV_CODEC_ID_CINEPAK)) |
|
qt_id = 1; |
|
|
|
if (qt_id) |
|
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME"); |
|
else if (!native_id) { |
|
// if there is no mkv-specific codec ID, use VFW mode |
|
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC"); |
|
track->write_dts = 1; |
|
ffformatcontext(s)->avoid_negative_ts_use_pts = 0; |
|
} |
|
|
|
ret = mkv_write_track_video(s, mkv, st, par, pb); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (!IS_WEBM(mkv)) |
|
mkv_write_dovi(s, pb, st); |
|
|
|
break; |
|
|
|
case AVMEDIA_TYPE_AUDIO: |
|
if (par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) { |
|
int64_t codecdelay = av_rescale_q(par->initial_padding, |
|
(AVRational){ 1, 48000 }, |
|
(AVRational){ 1, 1000000000 }); |
|
if (codecdelay < 0) { |
|
av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
// track->ts_offset = av_rescale_q(par->initial_padding, |
|
// (AVRational){ 1, par->sample_rate }, |
|
// st->time_base); |
|
|
|
put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay); |
|
} |
|
if (par->codec_id == AV_CODEC_ID_OPUS) |
|
put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL); |
|
#if CONFIG_MATROSKA_MUXER |
|
else if (par->codec_id == AV_CODEC_ID_AAC) { |
|
ret = get_aac_sample_rates(s, mkv, par->extradata, par->extradata_size, |
|
&sample_rate, &output_sample_rate); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
#endif |
|
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO); |
|
|
|
if (!native_id) |
|
// no mkv-specific ID, use ACM mode |
|
put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM"); |
|
|
|
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 6 + 4 * 9); |
|
put_ebml_uint(pb, MATROSKA_ID_AUDIOCHANNELS, par->ch_layout.nb_channels); |
|
|
|
track->sample_rate_offset = avio_tell(pb); |
|
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate); |
|
if (output_sample_rate) |
|
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate); |
|
|
|
bit_depth = av_get_bits_per_sample(par->codec_id); |
|
if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) { |
|
if (par->bits_per_raw_sample) |
|
bit_depth = par->bits_per_raw_sample; |
|
else |
|
bit_depth = av_get_bytes_per_sample(par->format) << 3; |
|
} |
|
if (!bit_depth) |
|
bit_depth = par->bits_per_coded_sample; |
|
if (bit_depth) |
|
put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth); |
|
end_ebml_master(pb, subinfo); |
|
break; |
|
|
|
case AVMEDIA_TYPE_SUBTITLE: |
|
if (!native_id) { |
|
av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id); |
|
return AVERROR(ENOSYS); |
|
} |
|
if (!IS_WEBM(mkv) && st->disposition & AV_DISPOSITION_DESCRIPTIONS) |
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGTEXTDESCRIPTIONS, 1); |
|
|
|
if (!IS_WEBM(mkv) || par->codec_id != AV_CODEC_ID_WEBVTT) |
|
native_id = MATROSKA_TRACK_TYPE_SUBTITLE; |
|
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id); |
|
break; |
|
default: |
|
av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
if (!IS_WEBM(mkv) || par->codec_id != AV_CODEC_ID_WEBVTT) { |
|
track->codecpriv_offset = avio_tell(pb); |
|
ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
end_ebml_master(pb, track_master); |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_write_tracks(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVIOContext *pb = s->pb; |
|
int video_default_idx = -1, audio_default_idx = -1, subtitle_default_idx = -1; |
|
int i, ret; |
|
|
|
if (mkv->nb_attachments == s->nb_streams) |
|
return 0; |
|
|
|
ret = start_ebml_master_crc32(&mkv->track.bc, mkv); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (mkv->default_mode != DEFAULT_MODE_PASSTHROUGH) { |
|
int video_idx = -1, audio_idx = -1, subtitle_idx = -1; |
|
|
|
for (i = s->nb_streams - 1; i >= 0; i--) { |
|
AVStream *st = s->streams[i]; |
|
|
|
switch (st->codecpar->codec_type) { |
|
#define CASE(type, variable) \ |
|
case AVMEDIA_TYPE_ ## type: \ |
|
variable ## _idx = i; \ |
|
if (st->disposition & AV_DISPOSITION_DEFAULT) \ |
|
variable ## _default_idx = i; \ |
|
break; |
|
CASE(VIDEO, video) |
|
CASE(AUDIO, audio) |
|
CASE(SUBTITLE, subtitle) |
|
#undef CASE |
|
} |
|
} |
|
|
|
video_default_idx = FFMAX(video_default_idx, video_idx); |
|
audio_default_idx = FFMAX(audio_default_idx, audio_idx); |
|
if (mkv->default_mode != DEFAULT_MODE_INFER_NO_SUBS) |
|
subtitle_default_idx = FFMAX(subtitle_default_idx, subtitle_idx); |
|
} |
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
int is_default = st->disposition & AV_DISPOSITION_DEFAULT || |
|
i == video_default_idx || i == audio_default_idx || |
|
i == subtitle_default_idx; |
|
ret = mkv_write_track(s, mkv, st, &mkv->tracks[i], |
|
mkv->track.bc, is_default); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
return end_ebml_master_crc32_tentatively(pb, &mkv->track, mkv, |
|
MATROSKA_ID_TRACKS); |
|
} |
|
|
|
static int mkv_write_simpletag(AVIOContext *pb, const AVDictionaryEntry *t) |
|
{ |
|
EBML_WRITER(4); |
|
uint8_t *key = av_strdup(t->key); |
|
uint8_t *p = key; |
|
const uint8_t *lang = NULL; |
|
int ret; |
|
|
|
if (!key) |
|
return AVERROR(ENOMEM); |
|
|
|
if ((p = strrchr(p, '-')) && |
|
(lang = ff_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL))) |
|
*p = 0; |
|
|
|
p = key; |
|
while (*p) { |
|
if (*p == ' ') |
|
*p = '_'; |
|
else if (*p >= 'a' && *p <= 'z') |
|
*p -= 'a' - 'A'; |
|
p++; |
|
} |
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_SIMPLETAG); |
|
ebml_writer_add_string(&writer, MATROSKA_ID_TAGNAME, key); |
|
if (lang) |
|
ebml_writer_add_string(&writer, MATROSKA_ID_TAGLANG, lang); |
|
ebml_writer_add_string(&writer, MATROSKA_ID_TAGSTRING, t->value); |
|
ret = ebml_writer_write(&writer, pb); |
|
|
|
av_freep(&key); |
|
return ret; |
|
} |
|
|
|
static int mkv_write_tag_targets(MatroskaMuxContext *mkv, AVIOContext **pb, |
|
ebml_master *tag, uint32_t elementid, uint64_t uid) |
|
{ |
|
ebml_master targets; |
|
int ret; |
|
|
|
if (!*pb) { |
|
ret = start_ebml_master_crc32(pb, mkv); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
*tag = start_ebml_master(*pb, MATROSKA_ID_TAG, 0); |
|
targets = start_ebml_master(*pb, MATROSKA_ID_TAGTARGETS, 4 + 1 + 8); |
|
if (elementid) |
|
put_ebml_uid(*pb, elementid, uid); |
|
end_ebml_master(*pb, targets); |
|
return 0; |
|
} |
|
|
|
static int mkv_check_tag_name(const char *name, uint32_t elementid) |
|
{ |
|
return av_strcasecmp(name, "title") && |
|
av_strcasecmp(name, "stereo_mode") && |
|
av_strcasecmp(name, "creation_time") && |
|
av_strcasecmp(name, "encoding_tool") && |
|
av_strcasecmp(name, "duration") && |
|
(elementid != MATROSKA_ID_TAGTARGETS_TRACKUID || |
|
av_strcasecmp(name, "language")) && |
|
(elementid != MATROSKA_ID_TAGTARGETS_ATTACHUID || |
|
(av_strcasecmp(name, "filename") && |
|
av_strcasecmp(name, "mimetype"))); |
|
} |
|
|
|
static int mkv_write_tag(MatroskaMuxContext *mkv, const AVDictionary *m, |
|
AVIOContext **pb, ebml_master *tag, |
|
uint32_t elementid, uint64_t uid) |
|
{ |
|
const AVDictionaryEntry *t = NULL; |
|
ebml_master tag2; |
|
int ret; |
|
|
|
ret = mkv_write_tag_targets(mkv, pb, tag ? tag : &tag2, elementid, uid); |
|
if (ret < 0) |
|
return ret; |
|
|
|
while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) { |
|
if (mkv_check_tag_name(t->key, elementid)) { |
|
ret = mkv_write_simpletag(*pb, t); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} |
|
|
|
if (!tag) |
|
end_ebml_master(*pb, tag2); |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_check_tag(const AVDictionary *m, uint32_t elementid) |
|
{ |
|
const AVDictionaryEntry *t = NULL; |
|
|
|
while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) |
|
if (mkv_check_tag_name(t->key, elementid)) |
|
return 1; |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_write_tags(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
ebml_master tag, *tagp = IS_SEEKABLE(s->pb, mkv) ? &tag : NULL; |
|
int i, ret; |
|
|
|
mkv->wrote_tags = 1; |
|
|
|
ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL); |
|
|
|
if (mkv_check_tag(s->metadata, 0)) { |
|
ret = mkv_write_tag(mkv, s->metadata, &mkv->tags.bc, NULL, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
const AVStream *st = s->streams[i]; |
|
mkv_track *track = &mkv->tracks[i]; |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) |
|
continue; |
|
|
|
if (!tagp && !mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID)) |
|
continue; |
|
|
|
ret = mkv_write_tag(mkv, st->metadata, &mkv->tags.bc, tagp, |
|
MATROSKA_ID_TAGTARGETS_TRACKUID, track->uid); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (tagp) { |
|
AVIOContext *pb = mkv->tags.bc; |
|
ebml_master simpletag; |
|
|
|
simpletag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, |
|
2 + 1 + 8 + 23); |
|
put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION"); |
|
track->duration_offset = avio_tell(pb); |
|
|
|
// Reserve space to write duration as a 20-byte string. |
|
// 2 (ebml id) + 1 (data size) + 20 (data) |
|
put_ebml_void(pb, 23); |
|
end_ebml_master(pb, simpletag); |
|
end_ebml_master(pb, tag); |
|
} |
|
} |
|
|
|
if (mkv->nb_attachments && !IS_WEBM(mkv)) { |
|
for (i = 0; i < s->nb_streams; i++) { |
|
const mkv_track *track = &mkv->tracks[i]; |
|
const AVStream *st = s->streams[i]; |
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT) |
|
continue; |
|
|
|
if (!mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID)) |
|
continue; |
|
|
|
ret = mkv_write_tag(mkv, st->metadata, &mkv->tags.bc, NULL, |
|
MATROSKA_ID_TAGTARGETS_ATTACHUID, track->uid); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} |
|
|
|
if (mkv->tags.bc) { |
|
return end_ebml_master_crc32_tentatively(s->pb, &mkv->tags, mkv, |
|
MATROSKA_ID_TAGS); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mkv_new_chapter_ids_needed(const AVFormatContext *s) |
|
{ |
|
for (unsigned i = 0; i < s->nb_chapters; i++) { |
|
if (!s->chapters[i]->id) |
|
return 1; |
|
for (unsigned j = 0; j < i; j++) |
|
if (s->chapters[j]->id == s->chapters[i]->id) |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mkv_write_chapters(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVIOContext *dyn_cp = NULL, *dyn_tags = NULL, **tags, *pb = s->pb; |
|
ebml_master editionentry; |
|
AVRational scale = {1, 1E9}; |
|
int ret, create_new_ids; |
|
|
|
if (!s->nb_chapters || mkv->wrote_chapters) |
|
return 0; |
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv); |
|
if (ret < 0) |
|
return ret; |
|
|
|
editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0); |
|
if (!IS_WEBM(mkv)) { |
|
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGDEFAULT, 1); |
|
/* If mkv_write_tags() has already been called, then any tags |
|
* corresponding to chapters will be put into a new Tags element. */ |
|
tags = mkv->wrote_tags ? &dyn_tags : &mkv->tags.bc; |
|
} else |
|
tags = NULL; |
|
|
|
create_new_ids = mkv_new_chapter_ids_needed(s); |
|
|
|
for (unsigned i = 0; i < s->nb_chapters; i++) { |
|
const AVChapter *c = s->chapters[i]; |
|
int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale); |
|
int64_t chapterend = av_rescale_q(c->end, c->time_base, scale); |
|
const AVDictionaryEntry *t; |
|
uint64_t uid = create_new_ids ? i + 1ULL : c->id; |
|
EBML_WRITER(7); |
|
|
|
if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) { |
|
av_log(s, AV_LOG_ERROR, |
|
"Invalid chapter start (%"PRId64") or end (%"PRId64").\n", |
|
chapterstart, chapterend); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_CHAPTERATOM); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_CHAPTERUID, uid); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_CHAPTERTIMESTART, chapterstart); |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_CHAPTERTIMEEND, chapterend); |
|
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) { |
|
ebml_writer_open_master(&writer, MATROSKA_ID_CHAPTERDISPLAY); |
|
ebml_writer_add_string(&writer, MATROSKA_ID_CHAPSTRING, t->value); |
|
ebml_writer_add_string(&writer, MATROSKA_ID_CHAPLANG , "und"); |
|
} |
|
ret = ebml_writer_write(&writer, dyn_cp); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
if (tags && mkv_check_tag(c->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID)) { |
|
ret = mkv_write_tag(mkv, c->metadata, tags, NULL, |
|
MATROSKA_ID_TAGTARGETS_CHAPTERUID, uid); |
|
if (ret < 0) |
|
goto fail; |
|
} |
|
} |
|
end_ebml_master(dyn_cp, editionentry); |
|
mkv->wrote_chapters = 1; |
|
|
|
ret = end_ebml_master_crc32(pb, &dyn_cp, mkv, MATROSKA_ID_CHAPTERS, 0, 0, 1); |
|
if (ret < 0) |
|
goto fail; |
|
if (dyn_tags) |
|
return end_ebml_master_crc32(pb, &dyn_tags, mkv, |
|
MATROSKA_ID_TAGS, 0, 0, 1); |
|
return 0; |
|
|
|
fail: |
|
if (tags) { |
|
/* tags == &mkv->tags.bc can only happen if mkv->tags.bc was |
|
* initially NULL, so we never free older tags. */ |
|
ffio_free_dyn_buf(tags); |
|
} |
|
ffio_free_dyn_buf(&dyn_cp); |
|
return ret; |
|
} |
|
|
|
static const char *get_mimetype(const AVStream *st) |
|
{ |
|
const AVDictionaryEntry *t; |
|
|
|
if (t = av_dict_get(st->metadata, "mimetype", NULL, 0)) |
|
return t->value; |
|
if (st->codecpar->codec_id != AV_CODEC_ID_NONE) { |
|
const AVCodecDescriptor *desc = avcodec_descriptor_get(st->codecpar->codec_id); |
|
if (desc && desc->mime_types) { |
|
return desc->mime_types[0]; |
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_TEXT) |
|
return "text/plain"; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static int mkv_write_attachments(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVIOContext *dyn_cp = NULL, *pb = s->pb; |
|
int i, ret; |
|
|
|
if (!mkv->nb_attachments) |
|
return 0; |
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv); |
|
if (ret < 0) |
|
return ret; |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
const AVStream *st = s->streams[i]; |
|
mkv_track *track = &mkv->tracks[i]; |
|
EBML_WRITER(6); |
|
const AVDictionaryEntry *t; |
|
const char *mimetype; |
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT) |
|
continue; |
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_ATTACHEDFILE); |
|
|
|
if (t = av_dict_get(st->metadata, "title", NULL, 0)) |
|
ebml_writer_add_string(&writer, MATROSKA_ID_FILEDESC, t->value); |
|
if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) { |
|
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i); |
|
ffio_free_dyn_buf(&dyn_cp); |
|
return AVERROR(EINVAL); |
|
} |
|
ebml_writer_add_string(&writer, MATROSKA_ID_FILENAME, t->value); |
|
|
|
mimetype = get_mimetype(st); |
|
av_assert0(mimetype); |
|
ebml_writer_add_string(&writer, MATROSKA_ID_FILEMIMETYPE, mimetype); |
|
ebml_writer_add_bin(&writer, MATROSKA_ID_FILEDATA, |
|
st->codecpar->extradata, st->codecpar->extradata_size); |
|
ebml_writer_add_uid(&writer, MATROSKA_ID_FILEUID, track->uid); |
|
ret = ebml_writer_write(&writer, dyn_cp); |
|
if (ret < 0) { |
|
ffio_free_dyn_buf(&dyn_cp); |
|
return ret; |
|
} |
|
} |
|
return end_ebml_master_crc32(pb, &dyn_cp, mkv, |
|
MATROSKA_ID_ATTACHMENTS, 0, 0, 1); |
|
} |
|
|
|
static int64_t get_metadata_duration(AVFormatContext *s) |
|
{ |
|
const AVDictionaryEntry *duration = av_dict_get(s->metadata, "DURATION", |
|
NULL, 0); |
|
int64_t max = 0; |
|
int64_t us; |
|
|
|
if (duration && (av_parse_time(&us, duration->value, 1) == 0) && us > 0) { |
|
av_log(s, AV_LOG_DEBUG, "get_metadata_duration found duration in context metadata: %" PRId64 "\n", us); |
|
return us; |
|
} |
|
|
|
for (unsigned i = 0; i < s->nb_streams; i++) { |
|
int64_t us; |
|
duration = av_dict_get(s->streams[i]->metadata, "DURATION", NULL, 0); |
|
|
|
if (duration && (av_parse_time(&us, duration->value, 1) == 0)) |
|
max = FFMAX(max, us); |
|
} |
|
|
|
av_log(s, AV_LOG_DEBUG, "get_metadata_duration returned: %" PRId64 "\n", max); |
|
return max; |
|
} |
|
|
|
static void ebml_write_header(AVIOContext *pb, |
|
const char *doctype, int version) |
|
{ |
|
EBML_WRITER(8); |
|
ebml_writer_open_master(&writer, EBML_ID_HEADER); |
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLVERSION, 1); |
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLREADVERSION, 1); |
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLMAXIDLENGTH, 4); |
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLMAXSIZELENGTH, 8); |
|
ebml_writer_add_string(&writer, EBML_ID_DOCTYPE, doctype); |
|
ebml_writer_add_uint (&writer, EBML_ID_DOCTYPEVERSION, version); |
|
ebml_writer_add_uint (&writer, EBML_ID_DOCTYPEREADVERSION, 2); |
|
/* The size is bounded, so no need to check this. */ |
|
ebml_writer_write(&writer, pb); |
|
} |
|
|
|
static int mkv_write_info(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
const AVDictionaryEntry *tag; |
|
int64_t creation_time; |
|
AVIOContext *pb; |
|
int ret = start_ebml_master_crc32(&mkv->info.bc, mkv); |
|
if (ret < 0) |
|
return ret; |
|
pb = mkv->info.bc; |
|
|
|
put_ebml_uint(pb, MATROSKA_ID_TIMECODESCALE, 1000000); |
|
if ((tag = av_dict_get(s->metadata, "title", NULL, 0))) |
|
put_ebml_string(pb, MATROSKA_ID_TITLE, tag->value); |
|
if (!(s->flags & AVFMT_FLAG_BITEXACT)) { |
|
put_ebml_string(pb, MATROSKA_ID_MUXINGAPP, LIBAVFORMAT_IDENT); |
|
if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0))) |
|
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, tag->value); |
|
else |
|
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT); |
|
|
|
if (!IS_WEBM(mkv)) |
|
put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, mkv->segment_uid, 16); |
|
} else { |
|
const char *ident = "Lavf"; |
|
put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , ident); |
|
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, ident); |
|
} |
|
|
|
if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) { |
|
// Adjust time so it's relative to 2001-01-01 and convert to nanoseconds. |
|
int64_t date_utc = (creation_time - 978307200000000LL) * 1000; |
|
uint8_t date_utc_buf[8]; |
|
AV_WB64(date_utc_buf, date_utc); |
|
put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8); |
|
} |
|
|
|
// reserve space for the duration |
|
mkv->duration = 0; |
|
mkv->duration_offset = avio_tell(pb); |
|
if (!mkv->is_live) { |
|
int64_t metadata_duration = get_metadata_duration(s); |
|
|
|
if (s->duration > 0) { |
|
int64_t scaledDuration = av_rescale(s->duration, 1000, AV_TIME_BASE); |
|
put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration); |
|
av_log(s, AV_LOG_DEBUG, "Write early duration from recording time = %" PRIu64 "\n", scaledDuration); |
|
} else if (metadata_duration > 0) { |
|
int64_t scaledDuration = av_rescale(metadata_duration, 1000, AV_TIME_BASE); |
|
put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration); |
|
av_log(s, AV_LOG_DEBUG, "Write early duration from metadata = %" PRIu64 "\n", scaledDuration); |
|
} else if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) { |
|
put_ebml_void(pb, 11); // assumes double-precision float to be written |
|
} |
|
} |
|
return end_ebml_master_crc32_tentatively(s->pb, &mkv->info, |
|
mkv, MATROSKA_ID_INFO); |
|
} |
|
|
|
static int mkv_write_header(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVIOContext *pb = s->pb; |
|
int ret, version = 2; |
|
|
|
if (!IS_WEBM(mkv) || |
|
av_dict_get(s->metadata, "stereo_mode", NULL, 0) || |
|
av_dict_get(s->metadata, "alpha_mode", NULL, 0)) |
|
version = 4; |
|
|
|
for (unsigned i = 0; i < s->nb_streams; i++) { |
|
if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS || |
|
av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) || |
|
av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0)) |
|
version = 4; |
|
} |
|
|
|
ebml_write_header(pb, s->oformat->name, version); |
|
put_ebml_id(pb, MATROSKA_ID_SEGMENT); |
|
put_ebml_size_unknown(pb, 8); |
|
mkv->segment_offset = avio_tell(pb); |
|
|
|
// We write a SeekHead at the beginning to point to all other level |
|
// one elements (except Clusters). |
|
mkv_start_seekhead(mkv, pb); |
|
|
|
ret = mkv_write_info(s); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = mkv_write_tracks(s); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = mkv_write_chapters(s); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (!IS_WEBM(mkv)) { |
|
ret = mkv_write_attachments(s); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
/* Must come after mkv_write_chapters() to write chapter tags |
|
* into the same Tags element as the other tags. */ |
|
ret = mkv_write_tags(s); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (!IS_SEEKABLE(pb, mkv)) { |
|
ret = mkv_write_seekhead(pb, mkv, 0, avio_tell(pb)); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
if (s->metadata_header_padding > 0) { |
|
if (s->metadata_header_padding == 1) |
|
s->metadata_header_padding++; |
|
put_ebml_void(pb, s->metadata_header_padding); |
|
} |
|
|
|
if (mkv->reserve_cues_space || mkv->move_cues_to_front) { |
|
if (IS_SEEKABLE(pb, mkv)) { |
|
mkv->cues_pos = avio_tell(pb); |
|
if (mkv->reserve_cues_space >= 1) { |
|
if (mkv->reserve_cues_space == 1) |
|
mkv->reserve_cues_space++; |
|
put_ebml_void(pb, mkv->reserve_cues_space); |
|
} |
|
} else |
|
mkv->reserve_cues_space = -1; |
|
} |
|
|
|
mkv->cluster_pos = -1; |
|
|
|
// start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or |
|
// after 4k and on a keyframe |
|
if (IS_SEEKABLE(pb, mkv)) { |
|
if (mkv->cluster_time_limit < 0) |
|
mkv->cluster_time_limit = 5000; |
|
if (mkv->cluster_size_limit < 0) |
|
mkv->cluster_size_limit = 5 * 1024 * 1024; |
|
} else { |
|
if (mkv->cluster_time_limit < 0) |
|
mkv->cluster_time_limit = 1000; |
|
if (mkv->cluster_size_limit < 0) |
|
mkv->cluster_size_limit = 32 * 1024; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#if CONFIG_MATROSKA_MUXER |
|
static int mkv_reformat_h2645(MatroskaMuxContext *mkv, AVIOContext *pb, |
|
const AVPacket *pkt, int *size) |
|
{ |
|
int ret; |
|
if (pb) { |
|
ff_nal_units_write_list(&mkv->cur_block.h2645_nalu_list, pb, pkt->data); |
|
} else { |
|
ret = ff_nal_units_create_list(&mkv->cur_block.h2645_nalu_list, pkt->data, pkt->size); |
|
if (ret < 0) |
|
return ret; |
|
*size = ret; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mkv_reformat_wavpack(MatroskaMuxContext *mkv, AVIOContext *pb, |
|
const AVPacket *pkt, int *size) |
|
{ |
|
const uint8_t *src = pkt->data; |
|
int srclen = pkt->size; |
|
int offset = 0; |
|
int ret; |
|
|
|
while (srclen >= WV_HEADER_SIZE) { |
|
WvHeader header; |
|
|
|
ret = ff_wv_parse_header(&header, src); |
|
if (ret < 0) |
|
return ret; |
|
src += WV_HEADER_SIZE; |
|
srclen -= WV_HEADER_SIZE; |
|
|
|
if (srclen < header.blocksize) |
|
return AVERROR_INVALIDDATA; |
|
|
|
offset += 4 * !!header.initial + 8 + 4 * !(header.initial && header.final); |
|
if (pb) { |
|
if (header.initial) |
|
avio_wl32(pb, header.samples); |
|
avio_wl32(pb, header.flags); |
|
avio_wl32(pb, header.crc); |
|
|
|
if (!(header.initial && header.final)) |
|
avio_wl32(pb, header.blocksize); |
|
|
|
avio_write(pb, src, header.blocksize); |
|
} |
|
src += header.blocksize; |
|
srclen -= header.blocksize; |
|
offset += header.blocksize; |
|
} |
|
*size = offset; |
|
|
|
return 0; |
|
} |
|
#endif |
|
|
|
static int mkv_reformat_av1(MatroskaMuxContext *mkv, AVIOContext *pb, |
|
const AVPacket *pkt, int *size) |
|
{ |
|
int ret = ff_av1_filter_obus(pb, pkt->data, pkt->size); |
|
if (ret < 0) |
|
return ret; |
|
*size = ret; |
|
return 0; |
|
} |
|
|
|
static int webm_reformat_vtt(MatroskaMuxContext *mkv, AVIOContext *pb, |
|
const AVPacket *pkt, int *size) |
|
{ |
|
const uint8_t *id, *settings; |
|
size_t id_size, settings_size; |
|
unsigned total = pkt->size + 2U; |
|
|
|
if (total > INT_MAX) |
|
return AVERROR(ERANGE); |
|
|
|
id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER, |
|
&id_size); |
|
settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS, |
|
&settings_size); |
|
if (id_size > INT_MAX - total || settings_size > INT_MAX - (total += id_size)) |
|
return AVERROR(ERANGE); |
|
*size = total += settings_size; |
|
if (pb) { |
|
avio_write(pb, id, id_size); |
|
avio_w8(pb, '\n'); |
|
avio_write(pb, settings, settings_size); |
|
avio_w8(pb, '\n'); |
|
avio_write(pb, pkt->data, pkt->size); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mkv_write_block(void *logctx, MatroskaMuxContext *mkv, |
|
AVIOContext *pb, const AVCodecParameters *par, |
|
mkv_track *track, const AVPacket *pkt, |
|
int keyframe, int64_t ts, uint64_t duration, |
|
int force_blockgroup, int64_t relative_packet_pos) |
|
{ |
|
uint8_t *side_data; |
|
size_t side_data_size; |
|
uint64_t additional_id; |
|
int64_t discard_padding = 0; |
|
unsigned track_number = track->track_num; |
|
EBML_WRITER(9); |
|
|
|
mkv->cur_block.track = track; |
|
mkv->cur_block.pkt = pkt; |
|
mkv->cur_block.rel_ts = ts - mkv->cluster_pts; |
|
mkv->cur_block.flags = 0; |
|
|
|
/* Open a BlockGroup with a Block now; it will later be converted |
|
* to a SimpleBlock if possible. */ |
|
ebml_writer_open_master(&writer, MATROSKA_ID_BLOCKGROUP); |
|
ebml_writer_add_block(&writer, mkv); |
|
|
|
if (duration) |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_BLOCKDURATION, duration); |
|
|
|
av_log(logctx, AV_LOG_DEBUG, |
|
"Writing block of size %d with pts %" PRId64 ", dts %" PRId64 ", " |
|
"duration %" PRId64 " at relative offset %" PRId64 " in cluster " |
|
"at offset %" PRId64 ". TrackNumber %u, keyframe %d\n", |
|
pkt->size, pkt->pts, pkt->dts, pkt->duration, relative_packet_pos, |
|
mkv->cluster_pos, track_number, keyframe != 0); |
|
|
|
side_data = av_packet_get_side_data(pkt, |
|
AV_PKT_DATA_SKIP_SAMPLES, |
|
&side_data_size); |
|
if (side_data && side_data_size >= 10) { |
|
discard_padding = av_rescale_q(AV_RL32(side_data + 4), |
|
(AVRational){1, par->sample_rate}, |
|
(AVRational){1, 1000000000}); |
|
ebml_writer_add_sint(&writer, MATROSKA_ID_DISCARDPADDING, discard_padding); |
|
} |
|
|
|
side_data = av_packet_get_side_data(pkt, |
|
AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, |
|
&side_data_size); |
|
if (side_data && side_data_size >= 8 && |
|
// Only the Codec-specific BlockMore (id == 1) is currently supported. |
|
(additional_id = AV_RB64(side_data)) == 1) { |
|
ebml_writer_open_master(&writer, MATROSKA_ID_BLOCKADDITIONS); |
|
ebml_writer_open_master(&writer, MATROSKA_ID_BLOCKMORE); |
|
/* Until dbc50f8a our demuxer used a wrong default value |
|
* of BlockAddID, so we write it unconditionally. */ |
|
ebml_writer_add_uint(&writer, MATROSKA_ID_BLOCKADDID, additional_id); |
|
ebml_writer_add_bin (&writer, MATROSKA_ID_BLOCKADDITIONAL, |
|
side_data + 8, side_data_size - 8); |
|
ebml_writer_close_master(&writer); |
|
ebml_writer_close_master(&writer); |
|
} |
|
|
|
if (!force_blockgroup && writer.nb_elements == 2) { |
|
/* Nothing except the BlockGroup + Block. Can use a SimpleBlock. */ |
|
writer.elements++; // Skip the BlockGroup. |
|
writer.nb_elements--; |
|
av_assert2(writer.elements[0].id == MATROSKA_ID_BLOCK); |
|
writer.elements[0].id = MATROSKA_ID_SIMPLEBLOCK; |
|
if (keyframe) |
|
mkv->cur_block.flags |= 1 << 7; |
|
} else if (!keyframe) |
|
ebml_writer_add_sint(&writer, MATROSKA_ID_BLOCKREFERENCE, |
|
track->last_timestamp - ts); |
|
|
|
return ebml_writer_write(&writer, pb); |
|
} |
|
|
|
static int mkv_end_cluster(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
int ret; |
|
|
|
if (!mkv->have_video) { |
|
for (unsigned i = 0; i < s->nb_streams; i++) |
|
mkv->tracks[i].has_cue = 0; |
|
} |
|
mkv->cluster_pos = -1; |
|
ret = end_ebml_master_crc32(s->pb, &mkv->cluster_bc, mkv, |
|
MATROSKA_ID_CLUSTER, 0, 1, 0); |
|
if (ret < 0) |
|
return ret; |
|
|
|
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT); |
|
return 0; |
|
} |
|
|
|
static int mkv_check_new_extra_data(AVFormatContext *s, const AVPacket *pkt) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
mkv_track *track = &mkv->tracks[pkt->stream_index]; |
|
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar; |
|
uint8_t *side_data; |
|
size_t side_data_size; |
|
int ret; |
|
|
|
side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, |
|
&side_data_size); |
|
|
|
switch (par->codec_id) { |
|
#if CONFIG_MATROSKA_MUXER |
|
case AV_CODEC_ID_AAC: |
|
if (side_data_size && mkv->track.bc) { |
|
int filler, output_sample_rate = 0; |
|
ret = get_aac_sample_rates(s, mkv, side_data, side_data_size, |
|
&track->sample_rate, &output_sample_rate); |
|
if (ret < 0) |
|
return ret; |
|
if (!output_sample_rate) |
|
output_sample_rate = track->sample_rate; // Space is already reserved, so it's this or a void element. |
|
ret = ff_alloc_extradata(par, side_data_size); |
|
if (ret < 0) |
|
return ret; |
|
memcpy(par->extradata, side_data, side_data_size); |
|
avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET); |
|
mkv_write_codecprivate(s, mkv->track.bc, par, 1, 0); |
|
filler = MAX_PCE_SIZE + 2 + 4 - (avio_tell(mkv->track.bc) - track->codecpriv_offset); |
|
if (filler) |
|
put_ebml_void(mkv->track.bc, filler); |
|
avio_seek(mkv->track.bc, track->sample_rate_offset, SEEK_SET); |
|
put_ebml_float(mkv->track.bc, MATROSKA_ID_AUDIOSAMPLINGFREQ, track->sample_rate); |
|
put_ebml_float(mkv->track.bc, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate); |
|
} else if (!par->extradata_size && !track->sample_rate) { |
|
// No extradata (codecpar or packet side data). |
|
av_log(s, AV_LOG_ERROR, "Error parsing AAC extradata, unable to determine samplerate.\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
break; |
|
case AV_CODEC_ID_FLAC: |
|
if (side_data_size && mkv->track.bc) { |
|
uint8_t *old_extradata = par->extradata; |
|
if (side_data_size != par->extradata_size) { |
|
av_log(s, AV_LOG_ERROR, "Invalid FLAC STREAMINFO metadata for output stream %d\n", |
|
pkt->stream_index); |
|
return AVERROR(EINVAL); |
|
} |
|
par->extradata = side_data; |
|
avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET); |
|
mkv_write_codecprivate(s, mkv->track.bc, par, 1, 0); |
|
par->extradata = old_extradata; |
|
} |
|
break; |
|
#endif |
|
// FIXME: Remove the following once libaom starts propagating extradata during init() |
|
// See https://bugs.chromium.org/p/aomedia/issues/detail?id=2012 |
|
case AV_CODEC_ID_AV1: |
|
if (side_data_size && mkv->track.bc && !par->extradata_size) { |
|
AVIOContext *dyn_cp; |
|
uint8_t *codecpriv; |
|
int codecpriv_size; |
|
ret = avio_open_dyn_buf(&dyn_cp); |
|
if (ret < 0) |
|
return ret; |
|
ff_isom_write_av1c(dyn_cp, side_data, side_data_size, 1); |
|
codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv); |
|
if ((ret = dyn_cp->error) < 0 || |
|
!codecpriv_size && (ret = AVERROR_INVALIDDATA)) { |
|
ffio_free_dyn_buf(&dyn_cp); |
|
return ret; |
|
} |
|
avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET); |
|
// Do not write the OBUs as we don't have space saved for them |
|
put_ebml_binary(mkv->track.bc, MATROSKA_ID_CODECPRIVATE, codecpriv, 4); |
|
ffio_free_dyn_buf(&dyn_cp); |
|
ret = ff_alloc_extradata(par, side_data_size); |
|
if (ret < 0) |
|
return ret; |
|
memcpy(par->extradata, side_data, side_data_size); |
|
} else if (!par->extradata_size) |
|
return AVERROR_INVALIDDATA; |
|
break; |
|
default: |
|
if (side_data_size) |
|
av_log(s, AV_LOG_DEBUG, "Ignoring new extradata in a packet for stream %d.\n", pkt->stream_index); |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_write_packet_internal(AVFormatContext *s, const AVPacket *pkt) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVIOContext *pb; |
|
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar; |
|
mkv_track *track = &mkv->tracks[pkt->stream_index]; |
|
int is_sub = par->codec_type == AVMEDIA_TYPE_SUBTITLE; |
|
/* All subtitle blocks are considered to be keyframes. */ |
|
int keyframe = is_sub || !!(pkt->flags & AV_PKT_FLAG_KEY); |
|
int64_t duration = FFMAX(pkt->duration, 0); |
|
int64_t write_duration = is_sub ? duration : 0; |
|
int ret; |
|
int64_t ts = track->write_dts ? pkt->dts : pkt->pts; |
|
int64_t relative_packet_pos; |
|
|
|
if (ts == AV_NOPTS_VALUE) { |
|
av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
ts += track->ts_offset; |
|
|
|
if (mkv->cluster_pos != -1) { |
|
int64_t cluster_time = ts - mkv->cluster_pts; |
|
if ((int16_t)cluster_time != cluster_time) { |
|
ret = mkv_end_cluster(s); |
|
if (ret < 0) |
|
return ret; |
|
av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n"); |
|
} |
|
} |
|
|
|
if (mkv->cluster_pos == -1) { |
|
ret = start_ebml_master_crc32(&mkv->cluster_bc, mkv); |
|
if (ret < 0) |
|
return ret; |
|
mkv->cluster_bc->direct = 1; |
|
mkv->cluster_pos = avio_tell(s->pb); |
|
put_ebml_uint(mkv->cluster_bc, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts)); |
|
mkv->cluster_pts = FFMAX(0, ts); |
|
av_log(s, AV_LOG_DEBUG, |
|
"Starting new cluster with timestamp " |
|
"%" PRId64 " at offset %" PRId64 " bytes\n", |
|
mkv->cluster_pts, mkv->cluster_pos); |
|
} |
|
pb = mkv->cluster_bc; |
|
|
|
relative_packet_pos = avio_tell(pb); |
|
|
|
/* The WebM spec requires WebVTT to be muxed in BlockGroups; |
|
* so we force it even for packets without duration. */ |
|
ret = mkv_write_block(s, mkv, pb, par, track, pkt, |
|
keyframe, ts, write_duration, |
|
par->codec_id == AV_CODEC_ID_WEBVTT, |
|
relative_packet_pos); |
|
if (ret < 0) |
|
return ret; |
|
if (keyframe && IS_SEEKABLE(s->pb, mkv) && |
|
(par->codec_type == AVMEDIA_TYPE_VIDEO || |
|
par->codec_type == AVMEDIA_TYPE_SUBTITLE || |
|
!mkv->have_video && !track->has_cue)) { |
|
ret = mkv_add_cuepoint(mkv, pkt->stream_index, ts, |
|
mkv->cluster_pos, relative_packet_pos, |
|
write_duration); |
|
if (ret < 0) |
|
return ret; |
|
track->has_cue = 1; |
|
} |
|
|
|
track->last_timestamp = ts; |
|
mkv->duration = FFMAX(mkv->duration, ts + duration); |
|
track->duration = FFMAX(track->duration, ts + duration); |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_write_packet(AVFormatContext *s, const AVPacket *pkt) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
int codec_type = s->streams[pkt->stream_index]->codecpar->codec_type; |
|
int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY); |
|
int cluster_size; |
|
int64_t cluster_time; |
|
int ret; |
|
int start_new_cluster; |
|
|
|
ret = mkv_check_new_extra_data(s, pkt); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (mkv->cluster_pos != -1) { |
|
if (mkv->tracks[pkt->stream_index].write_dts) |
|
cluster_time = pkt->dts - mkv->cluster_pts; |
|
else |
|
cluster_time = pkt->pts - mkv->cluster_pts; |
|
cluster_time += mkv->tracks[pkt->stream_index].ts_offset; |
|
|
|
cluster_size = avio_tell(mkv->cluster_bc); |
|
|
|
if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) { |
|
// WebM DASH specification states that the first block of |
|
// every Cluster has to be a key frame. So for DASH video, |
|
// we only create a Cluster on seeing key frames. |
|
start_new_cluster = keyframe; |
|
} else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO && |
|
cluster_time > mkv->cluster_time_limit) { |
|
// For DASH audio, we create a Cluster based on cluster_time_limit. |
|
start_new_cluster = 1; |
|
} else if (!mkv->is_dash && |
|
(cluster_size > mkv->cluster_size_limit || |
|
cluster_time > mkv->cluster_time_limit || |
|
(codec_type == AVMEDIA_TYPE_VIDEO && keyframe && |
|
cluster_size > 4 * 1024))) { |
|
start_new_cluster = 1; |
|
} else |
|
start_new_cluster = 0; |
|
|
|
if (start_new_cluster) { |
|
ret = mkv_end_cluster(s); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} |
|
|
|
if (!mkv->cluster_pos) |
|
avio_write_marker(s->pb, |
|
av_rescale_q(pkt->dts, s->streams[pkt->stream_index]->time_base, AV_TIME_BASE_Q), |
|
keyframe && (mkv->have_video ? codec_type == AVMEDIA_TYPE_VIDEO : 1) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT); |
|
|
|
// check if we have an audio packet cached |
|
if (mkv->cur_audio_pkt->size > 0) { |
|
ret = mkv_write_packet_internal(s, mkv->cur_audio_pkt); |
|
av_packet_unref(mkv->cur_audio_pkt); |
|
if (ret < 0) { |
|
av_log(s, AV_LOG_ERROR, |
|
"Could not write cached audio packet ret:%d\n", ret); |
|
return ret; |
|
} |
|
} |
|
|
|
// buffer an audio packet to ensure the packet containing the video |
|
// keyframe's timecode is contained in the same cluster for WebM |
|
if (codec_type == AVMEDIA_TYPE_AUDIO) { |
|
if (pkt->size > 0) |
|
ret = av_packet_ref(mkv->cur_audio_pkt, pkt); |
|
} else |
|
ret = mkv_write_packet_internal(s, pkt); |
|
return ret; |
|
} |
|
|
|
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
|
|
if (!pkt) { |
|
if (mkv->cluster_pos != -1) { |
|
int ret = mkv_end_cluster(s); |
|
if (ret < 0) |
|
return ret; |
|
av_log(s, AV_LOG_DEBUG, |
|
"Flushing cluster at offset %" PRIu64 " bytes\n", |
|
avio_tell(s->pb)); |
|
} |
|
return 1; |
|
} |
|
return mkv_write_packet(s, pkt); |
|
} |
|
|
|
static int mkv_write_trailer(AVFormatContext *s) |
|
{ |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVIOContext *pb = s->pb; |
|
int64_t endpos, ret64; |
|
int ret, ret2 = 0; |
|
|
|
// check if we have an audio packet cached |
|
if (mkv->cur_audio_pkt->size > 0) { |
|
ret = mkv_write_packet_internal(s, mkv->cur_audio_pkt); |
|
if (ret < 0) { |
|
av_log(s, AV_LOG_ERROR, |
|
"Could not write cached audio packet ret:%d\n", ret); |
|
return ret; |
|
} |
|
} |
|
|
|
if (mkv->cluster_pos != -1) { |
|
ret = end_ebml_master_crc32(pb, &mkv->cluster_bc, mkv, |
|
MATROSKA_ID_CLUSTER, 0, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
ret = mkv_write_chapters(s); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (!IS_SEEKABLE(pb, mkv)) |
|
return 0; |
|
|
|
endpos = avio_tell(pb); |
|
|
|
if (mkv->cues.num_entries && mkv->reserve_cues_space >= 0) { |
|
AVIOContext *cues = NULL; |
|
uint64_t size, offset = 0; |
|
int length_size = 0; |
|
|
|
redo_cues: |
|
ret = start_ebml_master_crc32(&cues, mkv); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = mkv_assemble_cues(s->streams, cues, &mkv->cues, |
|
mkv->tracks, s->nb_streams, offset); |
|
if (ret < 0) { |
|
ffio_free_dyn_buf(&cues); |
|
return ret; |
|
} |
|
|
|
if (mkv->reserve_cues_space || mkv->move_cues_to_front) { |
|
size = avio_tell(cues); |
|
length_size = ebml_length_size(size); |
|
size += 4 + length_size; |
|
if (offset + mkv->reserve_cues_space < size) { |
|
if (mkv->move_cues_to_front) { |
|
offset = size - mkv->reserve_cues_space; |
|
ffio_reset_dyn_buf(cues); |
|
goto redo_cues; |
|
} |
|
av_log(s, AV_LOG_WARNING, |
|
"Insufficient space reserved for Cues: " |
|
"%d < %"PRIu64". No Cues will be output.\n", |
|
mkv->reserve_cues_space, size); |
|
ret2 = AVERROR(EINVAL); |
|
goto after_cues; |
|
} else { |
|
if (offset) { |
|
ret = ff_format_shift_data(s, mkv->cues_pos + mkv->reserve_cues_space, |
|
offset); |
|
if (ret < 0) { |
|
ffio_free_dyn_buf(&cues); |
|
return ret; |
|
} |
|
endpos += offset; |
|
} |
|
if ((ret64 = avio_seek(pb, mkv->cues_pos, SEEK_SET)) < 0) { |
|
ffio_free_dyn_buf(&cues); |
|
return ret64; |
|
} |
|
if (mkv->reserve_cues_space == size + 1) { |
|
/* There is no way to reserve a single byte because |
|
* the minimal size of an EBML Void element is 2 |
|
* (1 byte ID, 1 byte length field). This problem |
|
* is solved by writing the Cues' length field on |
|
* one byte more than necessary. */ |
|
length_size++; |
|
size++; |
|
} |
|
} |
|
} |
|
ret = end_ebml_master_crc32(pb, &cues, mkv, MATROSKA_ID_CUES, |
|
length_size, 0, 1); |
|
if (ret < 0) |
|
return ret; |
|
if (mkv->reserve_cues_space) { |
|
if (size < mkv->reserve_cues_space) |
|
put_ebml_void(pb, mkv->reserve_cues_space - size); |
|
} else if (!mkv->move_cues_to_front) |
|
endpos = avio_tell(pb); |
|
} |
|
|
|
after_cues: |
|
/* Lengths greater than (1ULL << 56) - 1 can't be represented |
|
* via an EBML number, so leave the unknown length field. */ |
|
if (endpos - mkv->segment_offset < (1ULL << 56) - 1) { |
|
if ((ret64 = avio_seek(pb, mkv->segment_offset - 8, SEEK_SET)) < 0) |
|
return ret64; |
|
put_ebml_length(pb, endpos - mkv->segment_offset, 8); |
|
} |
|
|
|
ret = mkv_write_seekhead(pb, mkv, 1, mkv->info.pos); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (mkv->info.bc) { |
|
// update the duration |
|
av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration); |
|
avio_seek(mkv->info.bc, mkv->duration_offset, SEEK_SET); |
|
put_ebml_float(mkv->info.bc, MATROSKA_ID_DURATION, mkv->duration); |
|
ret = end_ebml_master_crc32(pb, &mkv->info.bc, mkv, |
|
MATROSKA_ID_INFO, 0, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
if (mkv->track.bc) { |
|
// write Tracks master |
|
avio_seek(pb, mkv->track.pos, SEEK_SET); |
|
ret = end_ebml_master_crc32(pb, &mkv->track.bc, mkv, |
|
MATROSKA_ID_TRACKS, 0, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
// update stream durations |
|
if (mkv->tags.bc) { |
|
int i; |
|
for (i = 0; i < s->nb_streams; ++i) { |
|
const AVStream *st = s->streams[i]; |
|
const mkv_track *track = &mkv->tracks[i]; |
|
|
|
if (track->duration_offset > 0) { |
|
double duration_sec = track->duration * av_q2d(st->time_base); |
|
char duration_string[20] = ""; |
|
|
|
av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i, |
|
track->duration); |
|
|
|
avio_seek(mkv->tags.bc, track->duration_offset, SEEK_SET); |
|
|
|
snprintf(duration_string, 20, "%02d:%02d:%012.9f", |
|
(int) duration_sec / 3600, ((int) duration_sec / 60) % 60, |
|
fmod(duration_sec, 60)); |
|
|
|
put_ebml_binary(mkv->tags.bc, MATROSKA_ID_TAGSTRING, duration_string, 20); |
|
} |
|
} |
|
|
|
avio_seek(pb, mkv->tags.pos, SEEK_SET); |
|
ret = end_ebml_master_crc32(pb, &mkv->tags.bc, mkv, |
|
MATROSKA_ID_TAGS, 0, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
avio_seek(pb, endpos, SEEK_SET); |
|
|
|
return ret2; |
|
} |
|
|
|
static uint64_t mkv_get_uid(const mkv_track *tracks, int i, AVLFG *c) |
|
{ |
|
while (1) { |
|
uint64_t uid; |
|
int k; |
|
uid = (uint64_t)av_lfg_get(c) << 32; |
|
uid |= av_lfg_get(c); |
|
if (!uid) |
|
continue; |
|
for (k = 0; k < i; k++) { |
|
if (tracks[k].uid == uid) |
|
break; |
|
} |
|
if (k == i) |
|
return uid; |
|
} |
|
} |
|
|
|
static int mkv_init(struct AVFormatContext *s) |
|
{ |
|
FFFormatContext *const si = ffformatcontext(s); |
|
MatroskaMuxContext *mkv = s->priv_data; |
|
AVLFG c; |
|
unsigned nb_tracks = 0; |
|
int i; |
|
|
|
mkv->ctx = s; |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 || |
|
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_COOK || |
|
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_RA_288 || |
|
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_SIPR || |
|
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_RV10 || |
|
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_RV20) { |
|
av_log(s, AV_LOG_ERROR, |
|
"The Matroska muxer does not yet support muxing %s\n", |
|
avcodec_get_name(s->streams[i]->codecpar->codec_id)); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
} |
|
|
|
if (s->avoid_negative_ts < 0) { |
|
s->avoid_negative_ts = 1; |
|
si->avoid_negative_ts_use_pts = 1; |
|
} |
|
|
|
if (!CONFIG_MATROSKA_MUXER || |
|
(CONFIG_WEBM_MUXER && !strcmp(s->oformat->name, "webm"))) { |
|
mkv->mode = MODE_WEBM; |
|
mkv->write_crc = 0; |
|
} else |
|
mkv->mode = MODE_MATROSKAv2; |
|
|
|
mkv->cur_audio_pkt = ffformatcontext(s)->pkt; |
|
|
|
mkv->tracks = av_calloc(s->nb_streams, sizeof(*mkv->tracks)); |
|
if (!mkv->tracks) |
|
return AVERROR(ENOMEM); |
|
|
|
if (!(s->flags & AVFMT_FLAG_BITEXACT)) { |
|
av_lfg_init(&c, av_get_random_seed()); |
|
|
|
// Calculate the SegmentUID now in order not to waste our random seed. |
|
for (i = 0; i < 4; i++) |
|
mkv->segment_uid[i] = av_lfg_get(&c); |
|
} |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *st = s->streams[i]; |
|
const AVCodecParameters *const par = st->codecpar; |
|
mkv_track *track = &mkv->tracks[i]; |
|
|
|
switch (par->codec_id) { |
|
#if CONFIG_MATROSKA_MUXER |
|
case AV_CODEC_ID_WAVPACK: |
|
track->reformat = mkv_reformat_wavpack; |
|
break; |
|
case AV_CODEC_ID_H264: |
|
case AV_CODEC_ID_HEVC: |
|
if ((par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 || |
|
par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6) && |
|
(AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1)) |
|
track->reformat = mkv_reformat_h2645; |
|
break; |
|
case AV_CODEC_ID_PRORES: |
|
/* Matroska specification requires to remove |
|
* the first QuickTime atom. */ |
|
track->offset = 8; |
|
break; |
|
#endif |
|
case AV_CODEC_ID_AV1: |
|
track->reformat = mkv_reformat_av1; |
|
break; |
|
case AV_CODEC_ID_WEBVTT: |
|
track->reformat = webm_reformat_vtt; |
|
break; |
|
} |
|
|
|
if (s->flags & AVFMT_FLAG_BITEXACT) { |
|
track->uid = i + 1; |
|
} else { |
|
track->uid = mkv_get_uid(mkv->tracks, i, &c); |
|
} |
|
|
|
// ms precision is the de-facto standard timescale for mkv files |
|
avpriv_set_pts_info(st, 64, 1, 1000); |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) { |
|
if (IS_WEBM(mkv)) { |
|
av_log(s, AV_LOG_WARNING, "Stream %d will be ignored " |
|
"as WebM doesn't support attachments.\n", i); |
|
} else if (!get_mimetype(st)) { |
|
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype " |
|
"tag and it cannot be deduced from the codec id.\n", i); |
|
return AVERROR(EINVAL); |
|
} |
|
mkv->nb_attachments++; |
|
continue; |
|
} |
|
|
|
nb_tracks++; |
|
track->track_num = mkv->is_dash ? mkv->dash_track_number : nb_tracks; |
|
track->track_num_size = ebml_num_size(track->track_num); |
|
} |
|
|
|
if (mkv->is_dash && nb_tracks != 1) |
|
return AVERROR(EINVAL); |
|
|
|
return 0; |
|
} |
|
|
|
static int mkv_check_bitstream(AVFormatContext *s, AVStream *st, |
|
const AVPacket *pkt) |
|
{ |
|
int ret = 1; |
|
|
|
if (CONFIG_MATROSKA_MUXER && st->codecpar->codec_id == AV_CODEC_ID_AAC) { |
|
if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) |
|
ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL); |
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) { |
|
ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL); |
|
} else if (CONFIG_MATROSKA_MUXER && |
|
st->codecpar->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE) { |
|
ret = ff_stream_add_bitstream_filter(st, "pgs_frame_merge", NULL); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static const AVCodecTag additional_audio_tags[] = { |
|
{ AV_CODEC_ID_ALAC, 0XFFFFFFFF }, |
|
{ AV_CODEC_ID_MLP, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_OPUS, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_QDMC, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_QDM2, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_RA_144, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_RA_288, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_COOK, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_TRUEHD, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_NONE, 0xFFFFFFFF } |
|
}; |
|
|
|
static const AVCodecTag additional_video_tags[] = { |
|
{ AV_CODEC_ID_RV10, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_RV20, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_RV30, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_NONE, 0xFFFFFFFF } |
|
}; |
|
|
|
static const AVCodecTag additional_subtitle_tags[] = { |
|
{ AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_DVD_SUBTITLE, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF }, |
|
{ AV_CODEC_ID_NONE, 0xFFFFFFFF } |
|
}; |
|
|
|
#define OFFSET(x) offsetof(MatroskaMuxContext, x) |
|
#define FLAGS AV_OPT_FLAG_ENCODING_PARAM |
|
static const AVOption options[] = { |
|
{ "reserve_index_space", "Reserve a given amount of space (in bytes) at the beginning of the file for the index (cues).", OFFSET(reserve_cues_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, |
|
{ "cues_to_front", "Move Cues (the index) to the front by shifting data if necessary", OFFSET(move_cues_to_front), AV_OPT_TYPE_BOOL, { .i64 = 0}, 0, 1, FLAGS }, |
|
{ "cluster_size_limit", "Store at most the provided amount of bytes in a cluster. ", OFFSET(cluster_size_limit), AV_OPT_TYPE_INT , { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
|
{ "cluster_time_limit", "Store at most the provided number of milliseconds in a cluster.", OFFSET(cluster_time_limit), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS }, |
|
{ "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
|
{ "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, FLAGS }, |
|
{ "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
|
{ "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
|
{ "flipped_raw_rgb", "Raw RGB bitmaps in VFW mode are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
|
{ "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, |
|
{ "default_mode", "Controls how a track's FlagDefault is inferred", OFFSET(default_mode), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MODE_PASSTHROUGH }, DEFAULT_MODE_INFER, DEFAULT_MODE_PASSTHROUGH, FLAGS, "default_mode" }, |
|
{ "infer", "For each track type, mark each track of disposition default as default; if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER }, 0, 0, FLAGS, "default_mode" }, |
|
{ "infer_no_subs", "For each track type, mark each track of disposition default as default; for audio and video: if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER_NO_SUBS }, 0, 0, FLAGS, "default_mode" }, |
|
{ "passthrough", "Use the disposition flag as-is", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_PASSTHROUGH }, 0, 0, FLAGS, "default_mode" }, |
|
{ NULL }, |
|
}; |
|
|
|
static const AVClass matroska_webm_class = { |
|
.class_name = "matroska/webm muxer", |
|
.item_name = av_default_item_name, |
|
.option = options, |
|
.version = LIBAVUTIL_VERSION_INT, |
|
}; |
|
|
|
#if CONFIG_MATROSKA_MUXER |
|
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance) |
|
{ |
|
for (int i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++) |
|
if (ff_mkv_codec_tags[i].id == codec_id) |
|
return 1; |
|
|
|
if (std_compliance < FF_COMPLIANCE_NORMAL) { |
|
enum AVMediaType type = avcodec_get_type(codec_id); |
|
// mkv theoretically supports any video/audio through VFW/ACM |
|
if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO) |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
const AVOutputFormat ff_matroska_muxer = { |
|
.name = "matroska", |
|
.long_name = NULL_IF_CONFIG_SMALL("Matroska"), |
|
.mime_type = "video/x-matroska", |
|
.extensions = "mkv", |
|
.priv_data_size = sizeof(MatroskaMuxContext), |
|
.audio_codec = CONFIG_LIBVORBIS_ENCODER ? |
|
AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3, |
|
.video_codec = CONFIG_LIBX264_ENCODER ? |
|
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4, |
|
.init = mkv_init, |
|
.deinit = mkv_deinit, |
|
.write_header = mkv_write_header, |
|
.write_packet = mkv_write_flush_packet, |
|
.write_trailer = mkv_write_trailer, |
|
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | |
|
AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, |
|
.codec_tag = (const AVCodecTag* const []){ |
|
ff_codec_bmp_tags, ff_codec_wav_tags, |
|
additional_audio_tags, additional_video_tags, additional_subtitle_tags, 0 |
|
}, |
|
.subtitle_codec = AV_CODEC_ID_ASS, |
|
.query_codec = mkv_query_codec, |
|
.check_bitstream = mkv_check_bitstream, |
|
.priv_class = &matroska_webm_class, |
|
}; |
|
#endif |
|
|
|
#if CONFIG_WEBM_MUXER |
|
static int webm_query_codec(enum AVCodecID codec_id, int std_compliance) |
|
{ |
|
for (int i = 0; ff_webm_codec_tags[i].id != AV_CODEC_ID_NONE; i++) |
|
if (ff_webm_codec_tags[i].id == codec_id) |
|
return 1; |
|
|
|
return 0; |
|
} |
|
|
|
const AVOutputFormat ff_webm_muxer = { |
|
.name = "webm", |
|
.long_name = NULL_IF_CONFIG_SMALL("WebM"), |
|
.mime_type = "video/webm", |
|
.extensions = "webm", |
|
.priv_data_size = sizeof(MatroskaMuxContext), |
|
.audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS, |
|
.video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8, |
|
.subtitle_codec = AV_CODEC_ID_WEBVTT, |
|
.init = mkv_init, |
|
.deinit = mkv_deinit, |
|
.write_header = mkv_write_header, |
|
.write_packet = mkv_write_flush_packet, |
|
.write_trailer = mkv_write_trailer, |
|
.query_codec = webm_query_codec, |
|
.check_bitstream = mkv_check_bitstream, |
|
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | |
|
AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, |
|
.priv_class = &matroska_webm_class, |
|
}; |
|
#endif |
|
|
|
#if CONFIG_MATROSKA_AUDIO_MUXER |
|
const AVOutputFormat ff_matroska_audio_muxer = { |
|
.name = "matroska", |
|
.long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"), |
|
.mime_type = "audio/x-matroska", |
|
.extensions = "mka", |
|
.priv_data_size = sizeof(MatroskaMuxContext), |
|
.audio_codec = CONFIG_LIBVORBIS_ENCODER ? |
|
AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3, |
|
.video_codec = AV_CODEC_ID_NONE, |
|
.init = mkv_init, |
|
.deinit = mkv_deinit, |
|
.write_header = mkv_write_header, |
|
.write_packet = mkv_write_flush_packet, |
|
.write_trailer = mkv_write_trailer, |
|
.check_bitstream = mkv_check_bitstream, |
|
.flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT | |
|
AVFMT_ALLOW_FLUSH, |
|
.codec_tag = (const AVCodecTag* const []){ |
|
ff_codec_wav_tags, additional_audio_tags, 0 |
|
}, |
|
.priv_class = &matroska_webm_class, |
|
}; |
|
#endif
|
|
|