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防止时间戳跳变

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This commit is contained in:
xiongziliang 2019-09-30 16:51:17 +08:00
parent 119d8d824f
commit b573b5bbac
1 changed files with 15 additions and 9 deletions
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24
src/MediaFile/Stamp.cpp
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@ -49,19 +49,25 @@ void Stamp::revise(uint32_t dts, uint32_t pts, int64_t &dts_out, int64_t &pts_ou
//相对时间戳
dts_out = dts - _start_dts;
if(dts_out < _dts_inc && !_playback){
//本次相对时间戳竟然小于上次？
if(dts_out < 0 || _dts_inc - dts_out > 0xFFFF){
//时间戳回环,保证下次相对时间戳与本次相对合理增长
_start_dts = dts - _dts_inc;
//本次时间戳强制等于上次时间戳
dts_out = _dts_inc;
}else{
//时间戳变小了？,那么取上次时间戳
if(!_playback){
if(dts_out < _dts_inc){
//本次相对时间戳竟然小于上次？
if(dts_out < 0 || _dts_inc - dts_out > 0xFFFF){
//时间戳回环,保证下次相对时间戳与本次相对合理增长
_start_dts = dts - _dts_inc;
//本次时间戳强制等于上次时间戳
dts_out = _dts_inc;
}else{
//时间戳变小了？,那么取上次时间戳
dts_out = _dts_inc;
}
}else if(dts_out - _dts_inc > 1000){
//直播时,不允许时间戳跳跃性增加
dts_out = _dts_inc;
}
}
//保留这次相对时间戳，以便下次对比是否回环或乱序
_dts_inc = dts_out;