mirror of https://git.ffmpeg.org/ffmpeg.git
Merge commit '4abfa387b8234736f6e0e541951e3d5eb60eb843'
* commit '4abfa387b8234736f6e0e541951e3d5eb60eb843': mov: Change DTS-based seek into CTS-based seek. Conflicts: libavformat/mov.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
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commit
f9e76d66e9
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@ -2293,6 +2293,7 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
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int64_t current_offset;
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int64_t current_dts = 0;
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unsigned int stts_index = 0;
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unsigned int ctts_index = 0;
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unsigned int stsc_index = 0;
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unsigned int stss_index = 0;
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unsigned int stps_index = 0;
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@ -2341,6 +2342,7 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
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sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
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unsigned int current_sample = 0;
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unsigned int stts_sample = 0;
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unsigned int ctts_sample = 0;
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unsigned int sample_size;
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unsigned int distance = 0;
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unsigned int rap_group_index = 0;
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@ -2348,8 +2350,6 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
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int rap_group_present = sc->rap_group_count && sc->rap_group;
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int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
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current_dts -= sc->dts_shift;
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if (!sc->sample_count || st->nb_index_entries)
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return;
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if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
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@ -2414,14 +2414,15 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
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if (sc->pseudo_stream_id == -1 ||
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sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
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AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
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int64_t current_cts = current_dts + (sc->ctts_data ? sc->ctts_data[ctts_index].duration : 0);
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e->pos = current_offset;
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e->timestamp = current_dts;
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e->timestamp = current_cts;
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e->size = sample_size;
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e->min_distance = distance;
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e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
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av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
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av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", cts %"PRId64", "
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"size %d, distance %d, keyframe %d\n", st->index, current_sample,
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current_offset, current_dts, sample_size, distance, keyframe);
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current_offset, current_cts, sample_size, distance, keyframe);
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if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
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ff_rfps_add_frame(mov->fc, st, current_dts);
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}
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@ -2431,11 +2432,16 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
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current_dts += sc->stts_data[stts_index].duration;
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distance++;
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stts_sample++;
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ctts_sample++;
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current_sample++;
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if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
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stts_sample = 0;
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stts_index++;
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}
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if (ctts_index + 1 < sc->ctts_count && ctts_sample == sc->ctts_data[ctts_index].count) {
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ctts_sample = 0;
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ctts_index++;
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}
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}
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}
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if (st->duration > 0)
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@ -3104,13 +3110,15 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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int sample_flags = i ? frag->flags : first_sample_flags;
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unsigned sample_duration = frag->duration;
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int keyframe = 0;
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int sample_cts = 0;
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int64_t cts;
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if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
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if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
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if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
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if (flags & MOV_TRUN_SAMPLE_CTS) sample_cts = avio_rb32(pb);
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sc->ctts_data[sc->ctts_count].count = 1;
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sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
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avio_rb32(pb) : 0;
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sc->ctts_data[sc->ctts_count].duration = sample_cts;
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mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
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if (frag->time != AV_NOPTS_VALUE) {
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if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
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@ -3134,6 +3142,8 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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}
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frag->time = AV_NOPTS_VALUE;
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}
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cts = dts + sample_cts;
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sc->ctts_count++;
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if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
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keyframe = 1;
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@ -3143,11 +3153,11 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
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if (keyframe)
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distance = 0;
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av_add_index_entry(st, offset, dts, sample_size, distance,
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av_add_index_entry(st, offset, cts, sample_size, distance,
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keyframe ? AVINDEX_KEYFRAME : 0);
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av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
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av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", cts %"PRId64", "
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"size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
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offset, dts, sample_size, distance, keyframe);
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offset, cts, sample_size, distance, keyframe);
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distance++;
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dts += sample_duration;
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offset += sample_size;
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@ -4111,7 +4121,12 @@ static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
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MOVStreamContext *msc = avst->priv_data;
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if (msc->pb && msc->current_sample < avst->nb_index_entries) {
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AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
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int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
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int64_t dts;
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if (msc->ctts_data)
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dts = av_rescale(current_sample->timestamp - msc->dts_shift - msc->ctts_data[msc->ctts_index].duration,
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AV_TIME_BASE, msc->time_scale);
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else
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dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
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av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
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if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
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(s->pb->seekable &&
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@ -4191,9 +4206,9 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
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}
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pkt->stream_index = sc->ffindex;
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pkt->dts = sample->timestamp;
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pkt->pts = sample->timestamp;
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if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
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pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
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pkt->dts = pkt->pts - sc->dts_shift - sc->ctts_data[sc->ctts_index].duration;
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/* update ctts context */
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sc->ctts_sample++;
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if (sc->ctts_index < sc->ctts_count &&
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@ -4206,8 +4221,8 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
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} else {
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int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
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st->index_entries[sc->current_sample].timestamp : st->duration;
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pkt->dts = pkt->pts;
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pkt->duration = next_dts - pkt->dts;
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pkt->pts = pkt->dts;
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}
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if (st->discard == AVDISCARD_ALL)
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goto retry;
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