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546 lines
18 KiB
546 lines
18 KiB
/* |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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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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#include "avformat.h" |
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#include "avio_internal.h" |
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#include "demux.h" |
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#include "internal.h" |
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#include "libavcodec/avcodec.h" |
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#include "libavcodec/codec_par.h" |
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|
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#include "libavutil/avassert.h" |
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#include "libavutil/iamf.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/intmath.h" |
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#include "libavutil/opt.h" |
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|
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/** |
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* @file |
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* Options definition for AVFormatContext. |
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*/ |
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|
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FF_DISABLE_DEPRECATION_WARNINGS |
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#include "options_table.h" |
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FF_ENABLE_DEPRECATION_WARNINGS |
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|
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static const char* format_to_name(void* ptr) |
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{ |
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AVFormatContext* fc = (AVFormatContext*) ptr; |
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if(fc->iformat) return fc->iformat->name; |
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else if(fc->oformat) return fc->oformat->name; |
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else return fc->av_class->class_name; |
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} |
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static void *format_child_next(void *obj, void *prev) |
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{ |
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AVFormatContext *s = obj; |
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if (!prev && s->priv_data && |
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((s->iformat && s->iformat->priv_class) || |
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s->oformat && s->oformat->priv_class)) |
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return s->priv_data; |
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if (s->pb && s->pb->av_class && prev != s->pb) |
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return s->pb; |
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return NULL; |
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} |
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enum { |
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CHILD_CLASS_ITER_AVIO = 0, |
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CHILD_CLASS_ITER_MUX, |
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CHILD_CLASS_ITER_DEMUX, |
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CHILD_CLASS_ITER_DONE, |
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}; |
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#define ITER_STATE_SHIFT 16 |
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static const AVClass *format_child_class_iterate(void **iter) |
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{ |
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// we use the low 16 bits of iter as the value to be passed to |
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// av_(de)muxer_iterate() |
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void *val = (void*)(((uintptr_t)*iter) & ((1 << ITER_STATE_SHIFT) - 1)); |
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unsigned int state = ((uintptr_t)*iter) >> ITER_STATE_SHIFT; |
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const AVClass *ret = NULL; |
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if (state == CHILD_CLASS_ITER_AVIO) { |
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ret = &ff_avio_class; |
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state++; |
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goto finish; |
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} |
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if (state == CHILD_CLASS_ITER_MUX) { |
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const AVOutputFormat *ofmt; |
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while ((ofmt = av_muxer_iterate(&val))) { |
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ret = ofmt->priv_class; |
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if (ret) |
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goto finish; |
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} |
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val = NULL; |
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state++; |
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} |
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if (state == CHILD_CLASS_ITER_DEMUX) { |
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const AVInputFormat *ifmt; |
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while ((ifmt = av_demuxer_iterate(&val))) { |
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ret = ifmt->priv_class; |
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if (ret) |
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goto finish; |
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} |
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val = NULL; |
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state++; |
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} |
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finish: |
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// make sure none av_(de)muxer_iterate does not set the high bits of val |
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av_assert0(!((uintptr_t)val >> ITER_STATE_SHIFT)); |
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*iter = (void*)((uintptr_t)val | (state << ITER_STATE_SHIFT)); |
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return ret; |
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} |
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static AVClassCategory get_category(void *ptr) |
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{ |
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AVFormatContext* s = ptr; |
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if(s->iformat) return AV_CLASS_CATEGORY_DEMUXER; |
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else return AV_CLASS_CATEGORY_MUXER; |
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} |
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static const AVClass av_format_context_class = { |
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.class_name = "AVFormatContext", |
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.item_name = format_to_name, |
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.option = avformat_options, |
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.version = LIBAVUTIL_VERSION_INT, |
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.child_next = format_child_next, |
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.child_class_iterate = format_child_class_iterate, |
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.category = AV_CLASS_CATEGORY_MUXER, |
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.get_category = get_category, |
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}; |
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static int io_open_default(AVFormatContext *s, AVIOContext **pb, |
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const char *url, int flags, AVDictionary **options) |
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{ |
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int loglevel; |
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if (!strcmp(url, s->url) || |
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s->iformat && !strcmp(s->iformat->name, "image2") || |
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s->oformat && !strcmp(s->oformat->name, "image2") |
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) { |
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loglevel = AV_LOG_DEBUG; |
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} else |
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loglevel = AV_LOG_INFO; |
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av_log(s, loglevel, "Opening \'%s\' for %s\n", url, flags & AVIO_FLAG_WRITE ? "writing" : "reading"); |
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return ffio_open_whitelist(pb, url, flags, &s->interrupt_callback, options, s->protocol_whitelist, s->protocol_blacklist); |
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} |
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#if FF_API_AVFORMAT_IO_CLOSE |
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void ff_format_io_close_default(AVFormatContext *s, AVIOContext *pb) |
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{ |
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avio_close(pb); |
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} |
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#endif |
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static int io_close2_default(AVFormatContext *s, AVIOContext *pb) |
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{ |
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return avio_close(pb); |
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} |
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AVFormatContext *avformat_alloc_context(void) |
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{ |
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FFFormatContext *const si = av_mallocz(sizeof(*si)); |
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AVFormatContext *s; |
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if (!si) |
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return NULL; |
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s = &si->pub; |
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s->av_class = &av_format_context_class; |
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s->io_open = io_open_default; |
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#if FF_API_AVFORMAT_IO_CLOSE |
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FF_DISABLE_DEPRECATION_WARNINGS |
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s->io_close = ff_format_io_close_default; |
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FF_ENABLE_DEPRECATION_WARNINGS |
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#endif |
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s->io_close2= io_close2_default; |
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av_opt_set_defaults(s); |
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si->pkt = av_packet_alloc(); |
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si->parse_pkt = av_packet_alloc(); |
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if (!si->pkt || !si->parse_pkt) { |
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avformat_free_context(s); |
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return NULL; |
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} |
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#if FF_API_LAVF_SHORTEST |
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si->shortest_end = AV_NOPTS_VALUE; |
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#endif |
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return s; |
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} |
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enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method(const AVFormatContext* ctx) |
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{ |
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return ctx->duration_estimation_method; |
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} |
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const AVClass *avformat_get_class(void) |
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{ |
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return &av_format_context_class; |
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} |
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#define DISPOSITION_OPT(ctx) \ |
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{ "disposition", NULL, offsetof(ctx, disposition), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, \ |
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.flags = AV_OPT_FLAG_ENCODING_PARAM, .unit = "disposition" }, \ |
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{ "default", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT }, .unit = "disposition" }, \ |
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{ "dub", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB }, .unit = "disposition" }, \ |
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{ "original", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL }, .unit = "disposition" }, \ |
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{ "comment", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT }, .unit = "disposition" }, \ |
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{ "lyrics", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS }, .unit = "disposition" }, \ |
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{ "karaoke", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE }, .unit = "disposition" }, \ |
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{ "forced", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED }, .unit = "disposition" }, \ |
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{ "hearing_impaired", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED }, .unit = "disposition" }, \ |
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{ "visual_impaired", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED }, .unit = "disposition" }, \ |
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{ "clean_effects", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS }, .unit = "disposition" }, \ |
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{ "attached_pic", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ATTACHED_PIC }, .unit = "disposition" }, \ |
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{ "timed_thumbnails", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_TIMED_THUMBNAILS }, .unit = "disposition" }, \ |
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{ "non_diegetic", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_NON_DIEGETIC }, .unit = "disposition" }, \ |
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{ "captions", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS }, .unit = "disposition" }, \ |
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{ "descriptions", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS }, .unit = "disposition" }, \ |
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{ "metadata", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA }, .unit = "disposition" }, \ |
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{ "dependent", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEPENDENT }, .unit = "disposition" }, \ |
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{ "still_image", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_STILL_IMAGE }, .unit = "disposition" } |
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static const AVOption stream_options[] = { |
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DISPOSITION_OPT(AVStream), |
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{ "discard", NULL, offsetof(AVStream, discard), AV_OPT_TYPE_INT, { .i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, |
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.flags = AV_OPT_FLAG_DECODING_PARAM, .unit = "avdiscard" }, |
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{ "none", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONE }, .unit = "avdiscard" }, |
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{ "default", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_DEFAULT }, .unit = "avdiscard" }, |
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{ "noref", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONREF }, .unit = "avdiscard" }, |
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{ "bidir", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_BIDIR }, .unit = "avdiscard" }, |
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{ "nointra", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONINTRA }, .unit = "avdiscard" }, |
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{ "nokey", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONKEY }, .unit = "avdiscard" }, |
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{ "all", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_ALL }, .unit = "avdiscard" }, |
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{ NULL } |
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}; |
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static const AVClass stream_class = { |
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.class_name = "AVStream", |
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.item_name = av_default_item_name, |
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.version = LIBAVUTIL_VERSION_INT, |
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.option = stream_options, |
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}; |
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const AVClass *av_stream_get_class(void) |
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{ |
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return &stream_class; |
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} |
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AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c) |
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{ |
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FFFormatContext *const si = ffformatcontext(s); |
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FFStream *sti; |
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AVStream *st; |
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AVStream **streams; |
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if (s->nb_streams >= s->max_streams) { |
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av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter" |
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" (%d), see the documentation if you wish to increase it\n", |
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s->max_streams); |
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return NULL; |
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} |
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streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams)); |
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if (!streams) |
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return NULL; |
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s->streams = streams; |
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sti = av_mallocz(sizeof(*sti)); |
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if (!sti) |
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return NULL; |
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st = &sti->pub; |
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st->av_class = &stream_class; |
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st->codecpar = avcodec_parameters_alloc(); |
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if (!st->codecpar) |
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goto fail; |
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sti->fmtctx = s; |
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if (s->iformat) { |
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sti->avctx = avcodec_alloc_context3(NULL); |
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if (!sti->avctx) |
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goto fail; |
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sti->info = av_mallocz(sizeof(*sti->info)); |
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if (!sti->info) |
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goto fail; |
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#if FF_API_R_FRAME_RATE |
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sti->info->last_dts = AV_NOPTS_VALUE; |
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#endif |
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sti->info->fps_first_dts = AV_NOPTS_VALUE; |
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sti->info->fps_last_dts = AV_NOPTS_VALUE; |
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|
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/* default pts setting is MPEG-like */ |
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avpriv_set_pts_info(st, 33, 1, 90000); |
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/* we set the current DTS to 0 so that formats without any timestamps |
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* but durations get some timestamps, formats with some unknown |
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* timestamps have their first few packets buffered and the |
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* timestamps corrected before they are returned to the user */ |
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sti->cur_dts = RELATIVE_TS_BASE; |
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} else { |
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sti->cur_dts = AV_NOPTS_VALUE; |
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} |
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st->index = s->nb_streams; |
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st->start_time = AV_NOPTS_VALUE; |
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st->duration = AV_NOPTS_VALUE; |
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sti->first_dts = AV_NOPTS_VALUE; |
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sti->probe_packets = s->max_probe_packets; |
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sti->pts_wrap_reference = AV_NOPTS_VALUE; |
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sti->pts_wrap_behavior = AV_PTS_WRAP_IGNORE; |
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sti->last_IP_pts = AV_NOPTS_VALUE; |
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sti->last_dts_for_order_check = AV_NOPTS_VALUE; |
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for (int i = 0; i < MAX_REORDER_DELAY + 1; i++) |
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sti->pts_buffer[i] = AV_NOPTS_VALUE; |
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st->sample_aspect_ratio = (AVRational) { 0, 1 }; |
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sti->transferred_mux_tb = (AVRational) { 0, 1 };; |
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|
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#if FF_API_AVSTREAM_SIDE_DATA |
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sti->inject_global_side_data = si->inject_global_side_data; |
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#endif |
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sti->need_context_update = 1; |
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s->streams[s->nb_streams++] = st; |
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return st; |
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fail: |
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ff_free_stream(&st); |
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return NULL; |
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} |
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#define FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
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#define OFFSET(x) offsetof(AVStreamGroupTileGrid, x) |
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static const AVOption tile_grid_options[] = { |
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{ "grid_size", "size of the output canvas", OFFSET(coded_width), |
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AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, INT_MAX, FLAGS }, |
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{ "output_size", "size of valid pixels in output image meant for presentation", OFFSET(width), |
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AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, INT_MAX, FLAGS }, |
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{ "background_color", "set a background color for unused pixels", |
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OFFSET(background), AV_OPT_TYPE_COLOR, { .str = "black"}, 0, 0, FLAGS }, |
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{ "horizontal_offset", NULL, OFFSET(horizontal_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, |
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{ "vertical_offset", NULL, OFFSET(vertical_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, |
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{ NULL }, |
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}; |
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#undef FLAGS |
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#undef OFFSET |
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static const AVClass tile_grid_class = { |
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.class_name = "AVStreamGroupTileGrid", |
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.version = LIBAVUTIL_VERSION_INT, |
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.option = tile_grid_options, |
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}; |
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static void *stream_group_child_next(void *obj, void *prev) |
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{ |
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AVStreamGroup *stg = obj; |
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if (!prev) { |
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switch(stg->type) { |
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case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT: |
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return stg->params.iamf_audio_element; |
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case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION: |
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return stg->params.iamf_mix_presentation; |
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case AV_STREAM_GROUP_PARAMS_TILE_GRID: |
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return stg->params.tile_grid; |
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default: |
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break; |
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} |
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} |
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return NULL; |
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} |
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static const AVClass *stream_group_child_iterate(void **opaque) |
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{ |
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uintptr_t i = (uintptr_t)*opaque; |
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const AVClass *ret = NULL; |
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|
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switch(i) { |
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case AV_STREAM_GROUP_PARAMS_NONE: |
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i++; |
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// fall-through |
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case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT: |
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ret = av_iamf_audio_element_get_class(); |
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break; |
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case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION: |
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ret = av_iamf_mix_presentation_get_class(); |
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break; |
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case AV_STREAM_GROUP_PARAMS_TILE_GRID: |
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ret = &tile_grid_class; |
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break; |
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default: |
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break; |
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} |
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if (ret) |
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*opaque = (void*)(i + 1); |
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return ret; |
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} |
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static const AVOption stream_group_options[] = { |
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DISPOSITION_OPT(AVStreamGroup), |
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{"id", "Set group id", offsetof(AVStreamGroup, id), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
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{ NULL } |
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}; |
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static const AVClass stream_group_class = { |
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.class_name = "AVStreamGroup", |
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.item_name = av_default_item_name, |
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.version = LIBAVUTIL_VERSION_INT, |
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.option = stream_group_options, |
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.child_next = stream_group_child_next, |
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.child_class_iterate = stream_group_child_iterate, |
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}; |
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const AVClass *av_stream_group_get_class(void) |
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{ |
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return &stream_group_class; |
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} |
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|
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AVStreamGroup *avformat_stream_group_create(AVFormatContext *s, |
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enum AVStreamGroupParamsType type, |
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AVDictionary **options) |
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{ |
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AVStreamGroup **stream_groups; |
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AVStreamGroup *stg; |
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FFStreamGroup *stgi; |
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|
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stream_groups = av_realloc_array(s->stream_groups, s->nb_stream_groups + 1, |
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sizeof(*stream_groups)); |
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if (!stream_groups) |
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return NULL; |
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s->stream_groups = stream_groups; |
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|
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stgi = av_mallocz(sizeof(*stgi)); |
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if (!stgi) |
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return NULL; |
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stg = &stgi->pub; |
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|
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stg->av_class = &stream_group_class; |
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av_opt_set_defaults(stg); |
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stg->type = type; |
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switch (type) { |
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case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT: |
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stg->params.iamf_audio_element = av_iamf_audio_element_alloc(); |
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if (!stg->params.iamf_audio_element) |
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goto fail; |
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break; |
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case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION: |
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stg->params.iamf_mix_presentation = av_iamf_mix_presentation_alloc(); |
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if (!stg->params.iamf_mix_presentation) |
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goto fail; |
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break; |
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case AV_STREAM_GROUP_PARAMS_TILE_GRID: |
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stg->params.tile_grid = av_mallocz(sizeof(*stg->params.tile_grid)); |
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if (!stg->params.tile_grid) |
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goto fail; |
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stg->params.tile_grid->av_class = &tile_grid_class; |
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av_opt_set_defaults(stg->params.tile_grid); |
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break; |
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default: |
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goto fail; |
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} |
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|
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if (options) { |
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if (av_opt_set_dict2(stg, options, AV_OPT_SEARCH_CHILDREN)) |
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goto fail; |
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} |
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|
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stgi->fmtctx = s; |
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stg->index = s->nb_stream_groups; |
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|
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s->stream_groups[s->nb_stream_groups++] = stg; |
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|
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return stg; |
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fail: |
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ff_free_stream_group(&stg); |
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return NULL; |
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} |
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|
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static int stream_group_add_stream(AVStreamGroup *stg, AVStream *st) |
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{ |
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AVStream **streams = av_realloc_array(stg->streams, stg->nb_streams + 1, |
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sizeof(*stg->streams)); |
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if (!streams) |
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return AVERROR(ENOMEM); |
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|
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stg->streams = streams; |
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stg->streams[stg->nb_streams++] = st; |
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|
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return 0; |
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} |
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|
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int avformat_stream_group_add_stream(AVStreamGroup *stg, AVStream *st) |
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{ |
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const FFStreamGroup *stgi = cffstreamgroup(stg); |
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const FFStream *sti = cffstream(st); |
|
|
|
if (stgi->fmtctx != sti->fmtctx) |
|
return AVERROR(EINVAL); |
|
|
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for (int i = 0; i < stg->nb_streams; i++) |
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if (stg->streams[i]->index == st->index) |
|
return AVERROR(EEXIST); |
|
|
|
return stream_group_add_stream(stg, st); |
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} |
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|
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static int option_is_disposition(const AVOption *opt) |
|
{ |
|
return opt->type == AV_OPT_TYPE_CONST && |
|
opt->unit && !strcmp(opt->unit, "disposition"); |
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} |
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|
|
int av_disposition_from_string(const char *disp) |
|
{ |
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for (const AVOption *opt = stream_options; opt->name; opt++) |
|
if (option_is_disposition(opt) && !strcmp(disp, opt->name)) |
|
return opt->default_val.i64; |
|
return AVERROR(EINVAL); |
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} |
|
|
|
const char *av_disposition_to_string(int disposition) |
|
{ |
|
int val; |
|
|
|
if (disposition <= 0) |
|
return NULL; |
|
|
|
val = 1 << ff_ctz(disposition); |
|
for (const AVOption *opt = stream_options; opt->name; opt++) |
|
if (option_is_disposition(opt) && opt->default_val.i64 == val) |
|
return opt->name; |
|
|
|
return NULL; |
|
}
|
|
|