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MP4: 修复mp4解复用定时器精度太高时读取文件太快的bug

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This commit is contained in:
ziyue 2021-12-16 10:50:31 +08:00
parent b3dd440151
commit f4b6a6bd40
2 changed files with 4 additions and 4 deletions
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7
src/Record/MP4Reader.cpp
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@ -59,17 +59,15 @@ bool MP4Reader::readSample() {
bool keyFrame = false; bool keyFrame = false;
bool eof = false; bool eof = false;
while (!eof) { while (!eof && _last_dts < getCurrentStamp()) {
auto frame = _demuxer->readFrame(keyFrame, eof); auto frame = _demuxer->readFrame(keyFrame, eof);
if (!frame) { if (!frame) {
continue; continue;
} }
_last_dts = frame->dts();
if (_muxer) { if (_muxer) {
_muxer->inputFrame(frame); _muxer->inputFrame(frame);
} }
if (frame->dts() > getCurrentStamp()) {
break;
}
} }
GET_CONFIG(bool, fileRepeat, Record::kFileRepeat); GET_CONFIG(bool, fileRepeat, Record::kFileRepeat);
@ -129,6 +127,7 @@ uint32_t MP4Reader::getCurrentStamp() {
void MP4Reader::setCurrentStamp(uint32_t new_stamp){ void MP4Reader::setCurrentStamp(uint32_t new_stamp){
auto old_stamp = getCurrentStamp(); auto old_stamp = getCurrentStamp();
_seek_to = new_stamp; _seek_to = new_stamp;
_last_dts = new_stamp;
_seek_ticker.resetTime(); _seek_ticker.resetTime();
if (old_stamp != new_stamp && _muxer) { if (old_stamp != new_stamp && _muxer) {
//时间轴未拖动时不操作 //时间轴未拖动时不操作

1
src/Record/MP4Reader.h
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@ -60,6 +60,7 @@ private:
bool _have_video = false; bool _have_video = false;
bool _paused = false; bool _paused = false;
float _speed = 1.0; float _speed = 1.0;
uint32_t _last_dts = 0;
uint32_t _seek_to; uint32_t _seek_to;
string _file_path; string _file_path;
recursive_mutex _mtx; recursive_mutex _mtx;