Function seg_init

libavformat/segment.c:682–828

}

static int seg_init(AVFormatContext *s)
{
    SegmentContext *seg = s->priv_data;
    AVFormatContext *oc = seg->avf;
    AVDictionary *options = NULL;
    int ret;
    int i;

    seg->segment_count = 0;
    if (!seg->write_header_trailer)
        seg->individual_header_trailer = 0;

    if (seg->header_filename) {
        seg->write_header_trailer = 1;
        seg->individual_header_trailer = 0;
    }

    if (seg->initial_offset > 0) {
        av_log(s, AV_LOG_WARNING, "NOTE: the option initial_offset is deprecated,"
               "you can use output_ts_offset instead of it\n");
    }

    if ((seg->time != 2000000) + !!seg->times_str + !!seg->frames_str > 1) {
        av_log(s, AV_LOG_ERROR,
               "segment_time, segment_times, and segment_frames options "
               "are mutually exclusive, select just one of them\n");
        return AVERROR(EINVAL);
    }

    if (seg->times_str || seg->frames_str)
        seg->min_seg_duration = 0;

    if (seg->times_str) {
        if ((ret = parse_times(s, &seg->times, &seg->nb_times, seg->times_str)) < 0)
            return ret;
    } else if (seg->frames_str) {
        if ((ret = parse_frames(s, &seg->frames, &seg->nb_frames, seg->frames_str)) < 0)
            return ret;
    } else {
        if (seg->use_clocktime) {
            if (seg->time <= 0) {
                av_log(s, AV_LOG_ERROR, "Invalid negative segment_time with segment_atclocktime option set\n");
                return AVERROR(EINVAL);
            }
            seg->clocktime_offset = seg->time - (seg->clocktime_offset % seg->time);
        }
        if (seg->min_seg_duration > seg->time) {
            av_log(s, AV_LOG_ERROR, "min_seg_duration cannot be greater than segment_time\n");
            return AVERROR(EINVAL);
        }
    }

    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 if (av_match_ext(seg->list, "ffcat,ffconcat")) seg->list_type = LIST_TYPE_FFCONCAT;