static int seg_write_header(AVFormatContext *s) { SegmentContext *seg = s->priv_data; AVFormatContext *oc = NULL; int ret, i; seg->segment_count = 0; if (!seg->write_header_trailer) seg->individual_header_trailer = 0; if (seg->time_str && seg->times_str) { av_log(s, AV_LOG_ERROR, "segment_time and segment_times options are mutually exclusive, select just one of them\n"); return AVERROR(EINVAL); } if ((seg->list_flags & SEGMENT_LIST_FLAG_LIVE) && seg->times_str) { av_log(s, AV_LOG_ERROR, "segment_flags +live and segment_times options are mutually exclusive:" "specify -segment_time if you want a live-friendly list\n"); return AVERROR(EINVAL); } if (seg->times_str) { if ((ret = parse_times(s, &seg->times, &seg->nb_times, seg->times_str)) < 0) return ret; } else { /* set default value if not specified */ if (!seg->time_str) seg->time_str = av_strdup("2"); if ((ret = av_parse_time(&seg->time, seg->time_str, 1)) < 0) { av_log(s, AV_LOG_ERROR, "Invalid time duration specification '%s' for segment_time option\n", seg->time_str); return ret; } } if (seg->time_delta_str) { if ((ret = av_parse_time(&seg->time_delta, seg->time_delta_str, 1)) < 0) { av_log(s, AV_LOG_ERROR, "Invalid time duration specification '%s' for delta option\n", seg->time_delta_str); return ret; } } if (seg->list) { if (seg->list_type == LIST_TYPE_UNDEFINED) { if (av_match_ext(seg->list, "csv" )) seg->list_type = LIST_TYPE_CSV; else if (av_match_ext(seg->list, "ext" )) seg->list_type = LIST_TYPE_EXT; else if (av_match_ext(seg->list, "m3u8")) seg->list_type = LIST_TYPE_M3U8; else seg->list_type = LIST_TYPE_FLAT; } if ((ret = segment_list_open(s)) < 0) goto fail; } if (seg->list_type == LIST_TYPE_EXT) av_log(s, AV_LOG_WARNING, "'ext' list type option is deprecated in favor of 'csv'\n"); for (i = 0; i < s->nb_streams; i++) seg->has_video += (s->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO); if (seg->has_video > 1) av_log(s, AV_LOG_WARNING, "More than a single video stream present, " "expect issues decoding it.\n"); seg->oformat = av_guess_format(seg->format, s->filename, NULL); if (!seg->oformat) { ret = AVERROR_MUXER_NOT_FOUND; goto fail; } if (seg->oformat->flags & AVFMT_NOFILE) { av_log(s, AV_LOG_ERROR, "format %s not supported.\n", oc->oformat->name); ret = AVERROR(EINVAL); goto fail; } if ((ret = segment_mux_init(s)) < 0) goto fail; oc = seg->avf; if (av_get_frame_filename(oc->filename, sizeof(oc->filename), s->filename, seg->segment_idx++) < 0) { ret = AVERROR(EINVAL); goto fail; } seg->segment_count++; if (seg->write_header_trailer) { if ((ret = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE, &s->interrupt_callback, NULL)) < 0) goto fail; } else { if ((ret = open_null_ctx(&oc->pb)) < 0) goto fail; } if ((ret = avformat_write_header(oc, NULL)) < 0) { avio_close(oc->pb); goto fail; } if (oc->avoid_negative_ts > 0 && s->avoid_negative_ts < 0) s->avoid_negative_ts = 1; if (!seg->write_header_trailer) { close_null_ctx(oc->pb); if ((ret = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE, &s->interrupt_callback, NULL)) < 0) goto fail; } fail: if (ret) { if (seg->list) segment_list_close(s); if (seg->avf) avformat_free_context(seg->avf); } return ret; }