图像处理算法大全（基于libyuv或IPP）----NV12转YV12

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IPP（libyuv）源码：

static void NV12ToYV12(BYTE* pNV12_Y,BYTE* pNV12_UV,BYTE* pYV12,  int width,int height)

{

//libyuv::NV12ToI420(pNV12_Y,width*2,pNV12_UV,width*2,pYV12,width,pYV12+height*width*5/4,width/2,pYV12+height*width,width/2,width,height);//去掉注释就是libyuv了
DWORD dwTime=::GetTickCount();
IppiSize imgSize;
imgSize.width=width;
imgSize.height=height;
Ipp8u* pDest[3]={pYV12,pYV12+height*width*5/4,pYV12+height*width};
int DestStep[3]={width,width*1/2,width*1/2};//YUV420->1,1/4,1/4
    
IppStatus is =ippiYCbCr420_8u_P2P3R(pNV12_Y,width,pNV12_UV,width,pDest,DestStep,imgSize);
//IppStatus is =ippiYCbCr420ToYCrCb420_8u_P2P3R(pNV12_Y,width,pNV12_UV,width,pDest,DestStep,imgSize);
if(is != ippStsNoErr)
{
return;
//convert error
}
//TRACE("NV12ToYV12所需时间:%dms\n",::GetTickCount()-dwTime);

}

调用NV12ToYV12(pInY，pInUV, pOut, 1920, 1080,)；//将1080P的NV12转换为YV12，适用于硬件解码后转换为通用的YV12

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