static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; int ret; st = avformat_new_stream(c->fc, NULL); if (!st) return AVERROR(ENOMEM); st->id = c->fc->nb_streams; sc = av_mallocz(sizeof(MOVStreamContext)); if (!sc) return AVERROR(ENOMEM); st->priv_data = sc; st->codec->codec_type = AVMEDIA_TYPE_DATA; sc->ffindex = st->index; if ((ret = mov_read_default(c, pb, atom)) < 0) return ret; /* sanity checks */ if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count || (!sc->sample_size && !sc->sample_count))) { av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n", st->index); return 0; } fix_timescale(c, sc); avpriv_set_pts_info(st, 64, 1, sc->time_scale); mov_build_index(c, st); if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { MOVDref *dref = &sc->drefs[sc->dref_id - 1]; if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback, c->use_absolute_path, c->fc) < 0) av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening alias: path='%s', dir='%s', " "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n", st->index, dref->path, dref->dir, dref->filename, dref->volume, dref->nlvl_from, dref->nlvl_to); } else { sc->pb = c->fc->pb; sc->pb_is_copied = 1; } if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { if (!st->sample_aspect_ratio.num && (st->codec->width != sc->width || st->codec->height != sc->height)) { st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) / ((double)st->codec->width * sc->height), INT_MAX); } #if FF_API_R_FRAME_RATE if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1)) av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, sc->time_scale, sc->stts_data[0].duration, INT_MAX); #endif } // done for ai5q, ai52, ai55, ai1q, ai12 and ai15. if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 && TAG_IS_AVCI(st->codec->codec_tag)) { ret = ff_generate_avci_extradata(st); if (ret < 0) return ret; } switch (st->codec->codec_id) { #if CONFIG_H261_DECODER case AV_CODEC_ID_H261: #endif #if CONFIG_H263_DECODER case AV_CODEC_ID_H263: #endif #if CONFIG_MPEG4_DECODER case AV_CODEC_ID_MPEG4: #endif st->codec->width = 0; /* let decoder init width/height */ st->codec->height= 0; break; } /* Do not need those anymore. */ av_freep(&sc->chunk_offsets); av_freep(&sc->stsc_data); av_freep(&sc->sample_sizes); av_freep(&sc->keyframes); av_freep(&sc->stts_data); av_freep(&sc->stps_data); av_freep(&sc->elst_data); av_freep(&sc->rap_group); return 0; }