static void opt_output_file(void *optctx, const char *filename) { OptionsContext *o = optctx; AVFormatContext *oc; int i, err; AVOutputFormat *file_oformat; OutputStream *ost; InputStream *ist; if (!strcmp(filename, "-")) filename = "pipe:"; err = avformat_alloc_output_context2(&oc, NULL, o->format, filename); if (!oc) { print_error(filename, err); exit_program(1); } file_oformat= oc->oformat; oc->interrupt_callback = int_cb; if (!strcmp(file_oformat->name, "ffm") && av_strstart(filename, "http:", NULL)) { int j; /* special case for files sent to ffserver: we get the stream parameters from ffserver */ int err = read_ffserver_streams(o, oc, filename); if (err < 0) { print_error(filename, err); exit_program(1); } for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) { ost = &output_streams[j]; for (i = 0; i < nb_input_streams; i++) { ist = &input_streams[i]; if(ist->st->codec->codec_type == ost->st->codec->codec_type){ ost->sync_ist= ist; ost->source_index= i; ist->discard = 0; break; } } if(!ost->sync_ist){ av_log(NULL, AV_LOG_FATAL, "Missing %s stream which is required by this ffm\n", av_get_media_type_string(ost->st->codec->codec_type)); exit_program(1); } } } else if (!o->nb_stream_maps) { /* pick the "best" stream of each type */ #define NEW_STREAM(type, index)\ if (index >= 0) {\ ost = new_ ## type ## _stream(o, oc);\ ost->source_index = index;\ ost->sync_ist = &input_streams[index];\ input_streams[index].discard = 0;\ } /* video: highest resolution */ if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) { int area = 0, idx = -1; for (i = 0; i < nb_input_streams; i++) { ist = &input_streams[i]; if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->st->codec->width * ist->st->codec->height > area) { area = ist->st->codec->width * ist->st->codec->height; idx = i; } } NEW_STREAM(video, idx); } /* audio: most channels */ if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) { int channels = 0, idx = -1; for (i = 0; i < nb_input_streams; i++) { ist = &input_streams[i]; if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && ist->st->codec->channels > channels) { channels = ist->st->codec->channels; idx = i; } } NEW_STREAM(audio, idx); } /* subtitles: pick first */ if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) { for (i = 0; i < nb_input_streams; i++) if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { NEW_STREAM(subtitle, i); break; } } /* do something with data? */ } else { for (i = 0; i < o->nb_stream_maps; i++) { StreamMap *map = &o->stream_maps[i]; if (map->disabled) continue; ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index]; if(o->subtitle_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) continue; if(o-> audio_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) continue; if(o-> video_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) continue; if(o-> data_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_DATA) continue; switch (ist->st->codec->codec_type) { case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(o, oc); break; case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc); break; case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break; case AVMEDIA_TYPE_DATA: ost = new_data_stream(o, oc); break; case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break; default: av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n", map->file_index, map->stream_index); exit_program(1); } ost->source_index = input_files[map->file_index].ist_index + map->stream_index; ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index + map->sync_stream_index]; ist->discard = 0; } } /* handle attached files */ for (i = 0; i < o->nb_attachments; i++) { AVIOContext *pb; uint8_t *attachment; const char *p; int64_t len; if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) { av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n", o->attachments[i]); exit_program(1); } if ((len = avio_size(pb)) <= 0) { av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n", o->attachments[i]); exit_program(1); } if (!(attachment = av_malloc(len))) { av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n", o->attachments[i]); exit_program(1); } avio_read(pb, attachment, len); ost = new_attachment_stream(o, oc); ost->stream_copy = 0; ost->source_index = -1; ost->attachment_filename = o->attachments[i]; ost->st->codec->extradata = attachment; ost->st->codec->extradata_size = len; p = strrchr(o->attachments[i], '/'); av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE); avio_close(pb); } output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1); output_files[nb_output_files - 1].ctx = oc; output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams; output_files[nb_output_files - 1].recording_time = o->recording_time; output_files[nb_output_files - 1].start_time = o->start_time; output_files[nb_output_files - 1].limit_filesize = o->limit_filesize; av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0); /* check filename in case of an image number is expected */ if (oc->oformat->flags & AVFMT_NEEDNUMBER) { if (!av_filename_number_test(oc->filename)) { print_error(oc->filename, AVERROR(EINVAL)); exit_program(1); } } if (!(oc->oformat->flags & AVFMT_NOFILE)) { /* test if it already exists to avoid losing precious files */ assert_file_overwrite(filename); /* open the file */ if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE, &oc->interrupt_callback, &output_files[nb_output_files - 1].opts)) < 0) { print_error(filename, err); exit_program(1); } } if (o->mux_preload) { uint8_t buf[64]; snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE)); av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0); } oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE); if (loop_output >= 0) { av_log(NULL, AV_LOG_WARNING, "-loop_output is deprecated, use -loop\n"); oc->loop_output = loop_output; } /* copy metadata */ for (i = 0; i < o->nb_metadata_map; i++) { char *p; int in_file_index = strtol(o->metadata_map[i].u.str, &p, 0); if (in_file_index < 0) continue; if (in_file_index >= nb_input_files) { av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d while processing metadata maps\n", in_file_index); exit_program(1); } copy_metadata(o->metadata_map[i].specifier, *p ? p + 1 : p, oc, input_files[in_file_index].ctx, o); } /* copy chapters */ if (o->chapters_input_file >= nb_input_files) { if (o->chapters_input_file == INT_MAX) { /* copy chapters from the first input file that has them*/ o->chapters_input_file = -1; for (i = 0; i < nb_input_files; i++) if (input_files[i].ctx->nb_chapters) { o->chapters_input_file = i; break; } } else { av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n", o->chapters_input_file); exit_program(1); } } if (o->chapters_input_file >= 0) copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1], !o->metadata_chapters_manual); /* copy global metadata by default */ if (!o->metadata_global_manual && nb_input_files){ av_dict_copy(&oc->metadata, input_files[0].ctx->metadata, AV_DICT_DONT_OVERWRITE); if(o->recording_time != INT64_MAX) av_dict_set(&oc->metadata, "duration", NULL, 0); } if (!o->metadata_streams_manual) for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) { InputStream *ist; if (output_streams[i].source_index < 0) /* this is true e.g. for attached files */ continue; ist = &input_streams[output_streams[i].source_index]; av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE); } /* process manually set metadata */ for (i = 0; i < o->nb_metadata; i++) { AVDictionary **m; char type, *val; const char *stream_spec; int index = 0, j, ret; val = strchr(o->metadata[i].u.str, '='); if (!val) { av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n", o->metadata[i].u.str); exit_program(1); } *val++ = 0; parse_meta_type(o->metadata[i].specifier, &type, &index, &stream_spec); if (type == 's') { for (j = 0; j < oc->nb_streams; j++) { if ((ret = check_stream_specifier(oc, oc->streams[j], stream_spec)) > 0) { av_dict_set(&oc->streams[j]->metadata, o->metadata[i].u.str, *val ? val : NULL, 0); } else if (ret < 0) exit_program(1); } printf("ret %d, stream_spec %s\n", ret, stream_spec); } else { switch (type) { case 'g': m = &oc->metadata; break; case 'c': if (index < 0 || index >= oc->nb_chapters) { av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index); exit_program(1); } m = &oc->chapters[index]->metadata; break; default: av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier); exit_program(1); } av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0); } } reset_options(o, 0); }