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avformat/dashdec: add min_buffer_time process logic 

if there have min_buffer_time in playlist, use the min_buffer_time
value for realtime.

Signed-off-by: Steven Liu <lq@onvideo.cn>
This commit is contained in:
Steven Liu 2018-09-05 14:20:52 +08:00
parent e35e915465
commit 8eac027cd1
1 changed files with 4 additions and 0 deletions
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4
libavformat/dashdec.c
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@ -1343,7 +1343,11 @@ static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls)
if (pls->presentation_timeoffset) {
num = pls->presentation_timeoffset * pls->fragment_timescale / pls->fragment_duration;
} else if (c->publish_time > 0 && !c->availability_start_time) {
if (c->min_buffer_time) {
num = pls->first_seq_no + (((c->publish_time + pls->fragment_duration) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration - c->min_buffer_time;
} else {
num = pls->first_seq_no + (((c->publish_time - c->time_shift_buffer_depth + pls->fragment_duration) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration;
}
} else {
num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration;
}