static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type, int source_index) { OutputStream *ost; AVStream *st = avformat_new_stream(oc, NULL); int idx = oc->nb_streams - 1, ret = 0; const char *bsfs = NULL, *time_base = NULL; char *next, *codec_tag = NULL; double qscale = -1; int i; if (!st) { av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n"); exit_program(1); } if (oc->nb_streams - 1 < o->nb_streamid_map) st->id = o->streamid_map[oc->nb_streams - 1]; GROW_ARRAY(output_streams, nb_output_streams); if (!(ost = av_mallocz(sizeof(*ost)))) exit_program(1); output_streams[nb_output_streams - 1] = ost; ost->file_index = nb_output_files - 1; ost->index = idx; ost->st = st; st->codecpar->codec_type = type; ret = choose_encoder(o, oc, ost); if (ret < 0) { av_log(NULL, AV_LOG_FATAL, "Error selecting an encoder for stream " "%d:%d\n", ost->file_index, ost->index); exit_program(1); } ost->enc_ctx = avcodec_alloc_context3(ost->enc); if (!ost->enc_ctx) { av_log(NULL, AV_LOG_ERROR, "Error allocating the encoding context.\n"); exit_program(1); } ost->enc_ctx->codec_type = type; ost->ref_par = avcodec_parameters_alloc(); if (!ost->ref_par) { av_log(NULL, AV_LOG_ERROR, "Error allocating the encoding parameters.\n"); exit_program(1); } if (ost->enc) { AVIOContext *s = NULL; char *buf = NULL, *arg = NULL, *preset = NULL; ost->encoder_opts = filter_codec_opts(o->g->codec_opts, ost->enc->id, oc, st, ost->enc); MATCH_PER_STREAM_OPT(presets, str, preset, oc, st); if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) { do { buf = get_line(s); if (!buf[0] || buf[0] == '#') { av_free(buf); continue; } if (!(arg = strchr(buf, '='))) { av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n"); exit_program(1); } *arg++ = 0; av_dict_set(&ost->encoder_opts, buf, arg, AV_DICT_DONT_OVERWRITE); av_free(buf); } while (!s->eof_reached); avio_closep(&s); } if (ret) { av_log(NULL, AV_LOG_FATAL, "Preset %s specified for stream %d:%d, but could not be opened.\n", preset, ost->file_index, ost->index); exit_program(1); } } else { ost->encoder_opts = filter_codec_opts(o->g->codec_opts, AV_CODEC_ID_NONE, oc, st, NULL); } MATCH_PER_STREAM_OPT(time_bases, str, time_base, oc, st); if (time_base) { AVRational q; if (av_parse_ratio(&q, time_base, INT_MAX, 0, NULL) < 0 || q.num <= 0 || q.den <= 0) { av_log(NULL, AV_LOG_FATAL, "Invalid time base: %s\n", time_base); exit_program(1); } st->time_base = q; } MATCH_PER_STREAM_OPT(enc_time_bases, str, time_base, oc, st); if (time_base) { AVRational q; if (av_parse_ratio(&q, time_base, INT_MAX, 0, NULL) < 0 || q.den <= 0) { av_log(NULL, AV_LOG_FATAL, "Invalid time base: %s\n", time_base); exit_program(1); } ost->enc_timebase = q; } ost->max_frames = INT64_MAX; MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st); for (i = 0; i<o->nb_max_frames; i++) { char *p = o->max_frames[i].specifier; if (!*p && type != AVMEDIA_TYPE_VIDEO) { av_log(NULL, AV_LOG_WARNING, "Applying unspecific -frames to non video streams, maybe you meant -vframes ?\n"); break; } } ost->copy_prior_start = -1; MATCH_PER_STREAM_OPT(copy_prior_start, i, ost->copy_prior_start, oc ,st); MATCH_PER_STREAM_OPT(bitstream_filters, str, bsfs, oc, st); while (bsfs && *bsfs) { const AVBitStreamFilter *filter; char *bsf, *bsf_options_str, *bsf_name; bsf = av_get_token(&bsfs, ","); if (!bsf) exit_program(1); bsf_name = av_strtok(bsf, "=", &bsf_options_str); if (!bsf_name) exit_program(1); filter = av_bsf_get_by_name(bsf_name); if (!filter) { av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf_name); exit_program(1); } ost->bsf_ctx = av_realloc_array(ost->bsf_ctx, ost->nb_bitstream_filters + 1, sizeof(*ost->bsf_ctx)); if (!ost->bsf_ctx) exit_program(1); ret = av_bsf_alloc(filter, &ost->bsf_ctx[ost->nb_bitstream_filters]); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n"); exit_program(1); } ost->nb_bitstream_filters++; if (bsf_options_str && filter->priv_class) { const AVOption *opt = av_opt_next(ost->bsf_ctx[ost->nb_bitstream_filters-1]->priv_data, NULL); const char * shorthand[2] = {NULL}; if (opt) shorthand[0] = opt->name; ret = av_opt_set_from_string(ost->bsf_ctx[ost->nb_bitstream_filters-1]->priv_data, bsf_options_str, shorthand, "=", ":"); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error parsing options for bitstream filter %s\n", bsf_name); exit_program(1); } } av_freep(&bsf); if (*bsfs) bsfs++; } if (ost->nb_bitstream_filters) { ost->bsf_extradata_updated = av_mallocz_array(ost->nb_bitstream_filters, sizeof(*ost->bsf_extradata_updated)); if (!ost->bsf_extradata_updated) { av_log(NULL, AV_LOG_FATAL, "Bitstream filter memory allocation failed\n"); exit_program(1); } } MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st); if (codec_tag) { uint32_t tag = strtol(codec_tag, &next, 0); if (*next) tag = AV_RL32(codec_tag); ost->st->codecpar->codec_tag = ost->enc_ctx->codec_tag = tag; } MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st); if (qscale >= 0) { ost->enc_ctx->flags |= AV_CODEC_FLAG_QSCALE; ost->enc_ctx->global_quality = FF_QP2LAMBDA * qscale; } MATCH_PER_STREAM_OPT(disposition, str, ost->disposition, oc, st); ost->disposition = av_strdup(ost->disposition); ost->max_muxing_queue_size = 128; MATCH_PER_STREAM_OPT(max_muxing_queue_size, i, ost->max_muxing_queue_size, oc, st); ost->max_muxing_queue_size *= sizeof(AVPacket); if (oc->oformat->flags & AVFMT_GLOBALHEADER) ost->enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER; av_dict_copy(&ost->sws_dict, o->g->sws_dict, 0); av_dict_copy(&ost->swr_opts, o->g->swr_opts, 0); if (ost->enc && av_get_exact_bits_per_sample(ost->enc->id) == 24) av_dict_set(&ost->swr_opts, "output_sample_bits", "24", 0); av_dict_copy(&ost->resample_opts, o->g->resample_opts, 0); ost->source_index = source_index; if (source_index >= 0) { ost->sync_ist = input_streams[source_index]; input_streams[source_index]->discard = 0; input_streams[source_index]->st->discard = input_streams[source_index]->user_set_discard; } ost->last_mux_dts = AV_NOPTS_VALUE; ost->muxing_queue = av_fifo_alloc(8 * sizeof(AVPacket)); if (!ost->muxing_queue) exit_program(1); return ost; }