static int init_muxer(AVFormatContext *s, AVDictionary **options) { int ret = 0, i; AVStream *st; AVDictionary *tmp = NULL; AVCodecParameters *par = NULL; AVOutputFormat *of = s->oformat; const AVCodecDescriptor *desc; AVDictionaryEntry *e; if (options) av_dict_copy(&tmp, *options, 0); if ((ret = av_opt_set_dict(s, &tmp)) < 0) goto fail; if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class && (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0) goto fail; #if FF_API_LAVF_AVCTX FF_DISABLE_DEPRECATION_WARNINGS if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) { if (!(s->flags & AVFMT_FLAG_BITEXACT)) { #if FF_API_LAVF_BITEXACT av_log(s, AV_LOG_WARNING, "Setting the AVFormatContext to bitexact mode, because " "the AVCodecContext is in that mode. This behavior will " "change in the future. To keep the current behavior, set " "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n"); s->flags |= AVFMT_FLAG_BITEXACT; #else av_log(s, AV_LOG_WARNING, "The AVFormatContext is not in set to bitexact mode, only " "the AVCodecContext. If this is not intended, set " "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n"); #endif } } FF_ENABLE_DEPRECATION_WARNINGS #endif // some sanity checks if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) { av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n"); ret = AVERROR(EINVAL); goto fail; } for (i = 0; i < s->nb_streams; i++) { st = s->streams[i]; par = st->codecpar; #if FF_API_LAVF_CODEC_TB && FF_API_LAVF_AVCTX FF_DISABLE_DEPRECATION_WARNINGS if (!st->time_base.num && st->codec->time_base.num) { av_log(s, AV_LOG_WARNING, "Using AVStream.codec.time_base as a " "timebase hint to the muxer is deprecated. Set " "AVStream.time_base instead.\n"); avpriv_set_pts_info(st, 64, st->codec->time_base.num, st->codec->time_base.den); } FF_ENABLE_DEPRECATION_WARNINGS #endif #if FF_API_LAVF_AVCTX FF_DISABLE_DEPRECATION_WARNINGS if (st->codecpar->codec_type == AVMEDIA_TYPE_UNKNOWN && st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN) { av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec " "parameters to muxers is deprecated, use AVStream.codecpar " "instead.\n"); ret = avcodec_parameters_from_context(st->codecpar, st->codec); if (ret < 0) goto fail; } FF_ENABLE_DEPRECATION_WARNINGS #endif /* update internal context from codecpar, old bsf api needs this * FIXME: remove when autobsf uses new bsf API */ ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar); if (ret < 0) goto fail; if (!st->time_base.num) { /* fall back on the default timebase values */ if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate) avpriv_set_pts_info(st, 64, 1, par->sample_rate); else avpriv_set_pts_info(st, 33, 1, 90000); } switch (par->codec_type) { case AVMEDIA_TYPE_AUDIO: if (par->sample_rate <= 0) { av_log(s, AV_LOG_ERROR, "sample rate not set\n"); ret = AVERROR(EINVAL); goto fail; } if (!par->block_align) par->block_align = par->channels * av_get_bits_per_sample(par->codec_id) >> 3; break; case AVMEDIA_TYPE_VIDEO: if ((par->width <= 0 || par->height <= 0) && !(of->flags & AVFMT_NODIMENSIONS)) { av_log(s, AV_LOG_ERROR, "dimensions not set\n"); ret = AVERROR(EINVAL); goto fail; } if (av_cmp_q(st->sample_aspect_ratio, par->sample_aspect_ratio) && fabs(av_q2d(st->sample_aspect_ratio) - av_q2d(par->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio) ) { if (st->sample_aspect_ratio.num != 0 && st->sample_aspect_ratio.den != 0 && par->sample_aspect_ratio.num != 0 && par->sample_aspect_ratio.den != 0) { av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer " "(%d/%d) and encoder layer (%d/%d)\n", st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, par->sample_aspect_ratio.num, par->sample_aspect_ratio.den); ret = AVERROR(EINVAL); goto fail; } } break; } desc = avcodec_descriptor_get(par->codec_id); if (desc && desc->props & AV_CODEC_PROP_REORDER) st->internal->reorder = 1; if (of->codec_tag) { if ( par->codec_tag && par->codec_id == AV_CODEC_ID_RAWVIDEO && ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0 || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' ')) && !validate_codec_tag(s, st)) { // the current rawvideo encoding system ends up setting // the wrong codec_tag for avi/mov, we override it here par->codec_tag = 0; } if (par->codec_tag) { if (!validate_codec_tag(s, st)) { char tagbuf[32], tagbuf2[32]; av_get_codec_tag_string(tagbuf, sizeof(tagbuf), par->codec_tag); av_get_codec_tag_string(tagbuf2, sizeof(tagbuf2), av_codec_get_tag(s->oformat->codec_tag, par->codec_id)); av_log(s, AV_LOG_ERROR, "Tag %s/0x%08x incompatible with output codec id '%d' (%s)\n", tagbuf, par->codec_tag, par->codec_id, tagbuf2); ret = AVERROR_INVALIDDATA; goto fail; } } else par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id); } if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT) s->internal->nb_interleaved_streams++; } if (!s->priv_data && of->priv_data_size > 0) { s->priv_data = av_mallocz(of->priv_data_size); if (!s->priv_data) { ret = AVERROR(ENOMEM); goto fail; } if (of->priv_class) { *(const AVClass **)s->priv_data = of->priv_class; av_opt_set_defaults(s->priv_data); if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0) goto fail; } } /* set muxer identification string */ if (!(s->flags & AVFMT_FLAG_BITEXACT)) { av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0); } else { av_dict_set(&s->metadata, "encoder", NULL, 0); } for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) { av_dict_set(&s->metadata, e->key, NULL, 0); } if (options) { av_dict_free(options); *options = tmp; } if (s->oformat->init) { if ((ret = s->oformat->init(s)) < 0) { if (s->oformat->deinit) s->oformat->deinit(s); return ret; } return ret == 0; } return 0; fail: av_dict_free(&tmp); return ret; }