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修复h264/h265 prefixSize计算错误的bug

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This commit is contained in:
xiongziliang 2020-05-26 17:00:51 +08:00
parent 7d8dbb2a4b
commit 7b90daab24
4 changed files with 22 additions and 25 deletions
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26
src/Common/Device.cpp
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@ -78,14 +78,6 @@ void DevChannel::inputH264(const char *data, int len, uint32_t dts, uint32_t pts
if(pts == 0){
pts = dts;
}
int prefixeSize;
if (memcmp("\x00\x00\x00\x01", data, 4) == 0) {
prefixeSize = 4;
} else if (memcmp("\x00\x00\x01", data, 3) == 0) {
prefixeSize = 3;
} else {
prefixeSize = 0;
}
//由于rtmp/hls/mp4需要缓存时间戳相同的帧，
//所以使用FrameNoCacheAble类型的帧反而会在转换成FrameCacheAble时多次内存拷贝
@ -93,9 +85,8 @@ void DevChannel::inputH264(const char *data, int len, uint32_t dts, uint32_t pts
H264Frame::Ptr frame = std::make_shared<H264Frame>();
frame->_dts = dts;
frame->_pts = pts;
frame->_buffer.assign("\x00\x00\x00\x01",4);
frame->_buffer.append(data + prefixeSize, len - prefixeSize);
frame->_prefix_size = 4;
frame->_buffer.assign(data, len);
frame->_prefix_size = prefixSize(data,len);
inputFrame(frame);
}
@ -106,14 +97,6 @@ void DevChannel::inputH265(const char *data, int len, uint32_t dts, uint32_t pts
if(pts == 0){
pts = dts;
}
int prefixeSize;
if (memcmp("\x00\x00\x00\x01", data, 4) == 0) {
prefixeSize = 4;
} else if (memcmp("\x00\x00\x01", data, 3) == 0) {
prefixeSize = 3;
} else {
prefixeSize = 0;
}
//由于rtmp/hls/mp4需要缓存时间戳相同的帧，
//所以使用FrameNoCacheAble类型的帧反而会在转换成FrameCacheAble时多次内存拷贝
@ -121,9 +104,8 @@ void DevChannel::inputH265(const char *data, int len, uint32_t dts, uint32_t pts
H265Frame::Ptr frame = std::make_shared<H265Frame>();
frame->_dts = dts;
frame->_pts = pts;
frame->_buffer.assign("\x00\x00\x00\x01",4);
frame->_buffer.append(data + prefixeSize, len - prefixeSize);
frame->_prefix_size = 4;
frame->_buffer.assign(data, len);
frame->_prefix_size = prefixSize(data,len);
inputFrame(frame);
}

15
src/Extension/H264.cpp
View File

@ -74,6 +74,21 @@ void splitH264(const char *ptr, int len, int prefix, const std::function<void(co
}
}
int prefixSize(const char *ptr, int len){
if (len < 4) {
return 0;
}
if (memcmp("\x00\x00\x01", ptr, 3) == 0) {
return 3;
}
if (memcmp("\x00\x00\x00\x01", ptr, 4) == 0) {
return 4;
}
return 0;
}
#if 0
//splitH264函数测试程序
static onceToken s_token([](){

2
src/Extension/H264.h
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@ -21,7 +21,7 @@ namespace mediakit{
bool getAVCInfo(const string &strSps,int &iVideoWidth, int &iVideoHeight, float &iVideoFps);
void splitH264(const char *ptr, int len, int prefix, const std::function<void(const char *, int, int)> &cb);
int prefixSize(const char *ptr, int len);
/**
* 264帧类
*/

4
src/Rtp/Decoder.cpp
View File

@ -129,7 +129,7 @@ void DecoderImp::onDecode(int stream,int codecid,int flags,int64_t pts,int64_t d
auto frame = std::make_shared<H264FrameNoCacheAble>((char *) data, bytes, dts, pts,0);
_merger.inputFrame(frame,[this](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer) {
onFrame(std::make_shared<H264FrameNoCacheAble>(buffer->data(), buffer->size(), dts, pts,4));
onFrame(std::make_shared<H264FrameNoCacheAble>(buffer->data(), buffer->size(), dts, pts, prefixSize(buffer->data(), buffer->size())));
});
break;
}
@ -148,7 +148,7 @@ void DecoderImp::onDecode(int stream,int codecid,int flags,int64_t pts,int64_t d
}
auto frame = std::make_shared<H265FrameNoCacheAble>((char *) data, bytes, dts, pts, 0);
_merger.inputFrame(frame,[this](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer) {
onFrame(std::make_shared<H265FrameNoCacheAble>(buffer->data(), buffer->size(), dts, pts, 4));
onFrame(std::make_shared<H265FrameNoCacheAble>(buffer->data(), buffer->size(), dts, pts, prefixSize(buffer->data(), buffer->size())));
});
break;
}