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avformat/utils: Move av_find_best_stream to avformat.c
It is not forbidden to call this with a muxer, so it is moved to avformat.c and not demux_utils.c. ff_find_decoder(), which is used by av_find_best_stream() is also moved as well, despite being even more geared towards demuxers. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
parent
e00d0ef46d
commit
8e2f48ff78
@ -312,6 +312,72 @@ int av_find_default_stream_index(AVFormatContext *s)
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return best_stream;
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}
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int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
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int wanted_stream_nb, int related_stream,
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const AVCodec **decoder_ret, int flags)
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{
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int nb_streams = ic->nb_streams;
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int ret = AVERROR_STREAM_NOT_FOUND;
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int best_count = -1, best_multiframe = -1, best_disposition = -1;
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int count, multiframe, disposition;
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int64_t best_bitrate = -1;
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int64_t bitrate;
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unsigned *program = NULL;
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const AVCodec *decoder = NULL, *best_decoder = NULL;
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if (related_stream >= 0 && wanted_stream_nb < 0) {
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AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
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if (p) {
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program = p->stream_index;
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nb_streams = p->nb_stream_indexes;
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}
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}
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for (unsigned i = 0; i < nb_streams; i++) {
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int real_stream_index = program ? program[i] : i;
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AVStream *st = ic->streams[real_stream_index];
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AVCodecParameters *par = st->codecpar;
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if (par->codec_type != type)
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continue;
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if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
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continue;
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if (type == AVMEDIA_TYPE_AUDIO && !(par->ch_layout.nb_channels && par->sample_rate))
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continue;
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if (decoder_ret) {
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decoder = ff_find_decoder(ic, st, par->codec_id);
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if (!decoder) {
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if (ret < 0)
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ret = AVERROR_DECODER_NOT_FOUND;
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continue;
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}
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}
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disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
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+ !! (st->disposition & AV_DISPOSITION_DEFAULT);
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count = ffstream(st)->codec_info_nb_frames;
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bitrate = par->bit_rate;
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multiframe = FFMIN(5, count);
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if ((best_disposition > disposition) ||
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(best_disposition == disposition && best_multiframe > multiframe) ||
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(best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
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(best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
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continue;
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best_disposition = disposition;
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best_count = count;
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best_bitrate = bitrate;
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best_multiframe = multiframe;
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ret = real_stream_index;
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best_decoder = decoder;
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if (program && i == nb_streams - 1 && ret < 0) {
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program = NULL;
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nb_streams = ic->nb_streams;
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/* no related stream found, try again with everything */
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i = 0;
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}
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}
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if (decoder_ret)
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*decoder_ret = best_decoder;
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return ret;
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}
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/**
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* Matches a stream specifier (but ignores requested index).
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*
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@ -595,3 +661,21 @@ AVRational av_stream_get_codec_timebase(const AVStream *st)
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// See avformat_transfer_internal_stream_timing_info() TODO.
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return cffstream(st)->avctx->time_base;
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}
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const AVCodec *ff_find_decoder(AVFormatContext *s, const AVStream *st,
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enum AVCodecID codec_id)
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{
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switch (st->codecpar->codec_type) {
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case AVMEDIA_TYPE_VIDEO:
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if (s->video_codec) return s->video_codec;
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break;
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case AVMEDIA_TYPE_AUDIO:
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if (s->audio_codec) return s->audio_codec;
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break;
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case AVMEDIA_TYPE_SUBTITLE:
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if (s->subtitle_codec) return s->subtitle_codec;
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break;
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}
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return avcodec_find_decoder(codec_id);
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}
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@ -76,24 +76,6 @@ int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
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return 0;
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}
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const AVCodec *ff_find_decoder(AVFormatContext *s, const AVStream *st,
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enum AVCodecID codec_id)
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{
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switch (st->codecpar->codec_type) {
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case AVMEDIA_TYPE_VIDEO:
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if (s->video_codec) return s->video_codec;
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break;
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case AVMEDIA_TYPE_AUDIO:
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if (s->audio_codec) return s->audio_codec;
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break;
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case AVMEDIA_TYPE_SUBTITLE:
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if (s->subtitle_codec) return s->subtitle_codec;
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break;
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}
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return avcodec_find_decoder(codec_id);
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}
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/* an arbitrarily chosen "sane" max packet size -- 50M */
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#define SANE_CHUNK_SIZE (50000000)
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@ -305,72 +287,6 @@ int ff_alloc_extradata(AVCodecParameters *par, int size)
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return 0;
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}
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int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
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int wanted_stream_nb, int related_stream,
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const AVCodec **decoder_ret, int flags)
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{
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int nb_streams = ic->nb_streams;
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int ret = AVERROR_STREAM_NOT_FOUND;
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int best_count = -1, best_multiframe = -1, best_disposition = -1;
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int count, multiframe, disposition;
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int64_t best_bitrate = -1;
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int64_t bitrate;
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unsigned *program = NULL;
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const AVCodec *decoder = NULL, *best_decoder = NULL;
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if (related_stream >= 0 && wanted_stream_nb < 0) {
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AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
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if (p) {
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program = p->stream_index;
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nb_streams = p->nb_stream_indexes;
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}
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}
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for (unsigned i = 0; i < nb_streams; i++) {
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int real_stream_index = program ? program[i] : i;
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AVStream *st = ic->streams[real_stream_index];
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AVCodecParameters *par = st->codecpar;
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if (par->codec_type != type)
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continue;
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if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
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continue;
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if (type == AVMEDIA_TYPE_AUDIO && !(par->ch_layout.nb_channels && par->sample_rate))
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continue;
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if (decoder_ret) {
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decoder = ff_find_decoder(ic, st, par->codec_id);
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if (!decoder) {
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if (ret < 0)
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ret = AVERROR_DECODER_NOT_FOUND;
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continue;
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}
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}
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disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
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+ !! (st->disposition & AV_DISPOSITION_DEFAULT);
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count = ffstream(st)->codec_info_nb_frames;
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bitrate = par->bit_rate;
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multiframe = FFMIN(5, count);
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if ((best_disposition > disposition) ||
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(best_disposition == disposition && best_multiframe > multiframe) ||
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(best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
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(best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
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continue;
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best_disposition = disposition;
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best_count = count;
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best_bitrate = bitrate;
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best_multiframe = multiframe;
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ret = real_stream_index;
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best_decoder = decoder;
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if (program && i == nb_streams - 1 && ret < 0) {
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program = NULL;
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nb_streams = ic->nb_streams;
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/* no related stream found, try again with everything */
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i = 0;
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}
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}
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if (decoder_ret)
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*decoder_ret = best_decoder;
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return ret;
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}
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/*******************************************************/
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int ff_stream_side_data_copy(AVStream *dst, const AVStream *src)
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