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MPEG: 优化http-ts性能: #1342

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ziyue 2022-01-06 15:30:09 +08:00
parent 5a592e6db6
commit fd6e4b6342
2 changed files with 23 additions and 6 deletions
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23
src/Record/MPEG.cpp
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@ -64,7 +64,9 @@ bool MpegMuxer::inputFrame(const Frame::Ptr &frame) {
_key_pos = have_idr; _key_pos = have_idr;
//取视频时间戳为TS的时间戳 //取视频时间戳为TS的时间戳
_timestamp = (uint32_t) dts; _timestamp = (uint32_t) dts;
_max_cache_size = 512 + 1.2 * buffer->size();
mpeg_muxer_input(_context, track_id, have_idr ? 0x0001 : 0, pts * 90LL,dts * 90LL, buffer->data(), buffer->size()); mpeg_muxer_input(_context, track_id, have_idr ? 0x0001 : 0, pts * 90LL,dts * 90LL, buffer->data(), buffer->size());
flushCache();
}); });
} }
@ -80,7 +82,9 @@ bool MpegMuxer::inputFrame(const Frame::Ptr &frame) {
//没有视频时，才以音频时间戳为TS的时间戳 //没有视频时，才以音频时间戳为TS的时间戳
_timestamp = (uint32_t) frame->dts(); _timestamp = (uint32_t) frame->dts();
} }
_max_cache_size = 512 + 1.2 * frame->size();
mpeg_muxer_input(_context, track_id, frame->keyFrame() ? 0x0001 : 0, frame->pts() * 90LL, frame->dts() * 90LL, frame->data(), frame->size()); mpeg_muxer_input(_context, track_id, frame->keyFrame() ? 0x0001 : 0, frame->pts() * 90LL, frame->dts() * 90LL, frame->data(), frame->size());
flushCache();
return true; return true;
} }
} }
@ -99,9 +103,17 @@ void MpegMuxer::createContext() {
/*alloc*/ /*alloc*/
[](void *param, size_t bytes) { [](void *param, size_t bytes) {
MpegMuxer *thiz = (MpegMuxer *)param; MpegMuxer *thiz = (MpegMuxer *)param;
if (!thiz->_current_buffer
|| thiz->_current_buffer->size() + bytes > thiz->_current_buffer->getCapacity()) {
if (thiz->_current_buffer) {
//WarnL << "need realloc mpeg buffer" << thiz->_current_buffer->size() + bytes << " > " << thiz->_current_buffer->getCapacity();
thiz->flushCache();
}
thiz->_current_buffer = thiz->_buffer_pool.obtain2(); thiz->_current_buffer = thiz->_buffer_pool.obtain2();
thiz->_current_buffer->setCapacity(bytes + 1); thiz->_current_buffer->setSize(0);
return (void *) thiz->_current_buffer->data(); thiz->_current_buffer->setCapacity(MAX(thiz->_max_cache_size, bytes));
}
return (void *)(thiz->_current_buffer->data() + thiz->_current_buffer->size());
}, },
/*free*/ /*free*/
[](void *param, void *packet) { [](void *param, void *packet) {
@ -120,8 +132,11 @@ void MpegMuxer::createContext() {
} }
void MpegMuxer::onWrite_l(const void *packet, size_t bytes) { void MpegMuxer::onWrite_l(const void *packet, size_t bytes) {
assert(_current_buffer && _current_buffer->data() == packet); assert(_current_buffer && _current_buffer->data() + _current_buffer->size() == packet);
_current_buffer->setSize(bytes); _current_buffer->setSize(_current_buffer->size() + bytes);
}
void MpegMuxer::flushCache() {
onWrite(std::move(_current_buffer), _timestamp, _key_pos); onWrite(std::move(_current_buffer), _timestamp, _key_pos);
_key_pos = false; _key_pos = false;
} }

2
src/Record/MPEG.h
View File

@ -58,11 +58,13 @@ private:
void createContext(); void createContext();
void releaseContext(); void releaseContext();
void onWrite_l(const void *packet, size_t bytes); void onWrite_l(const void *packet, size_t bytes);
void flushCache();
private: private:
bool _is_ps = false; bool _is_ps = false;
bool _have_video = false; bool _have_video = false;
bool _key_pos = false; bool _key_pos = false;
uint32_t _max_cache_size = 0;
uint32_t _timestamp = 0; uint32_t _timestamp = 0;
struct mpeg_muxer_t *_context = nullptr; struct mpeg_muxer_t *_context = nullptr;
unordered_map<int, int/*track_id*/> _codec_to_trackid; unordered_map<int, int/*track_id*/> _codec_to_trackid;