Question

我逐帧读入了yuv格式文件，现在想要对得到的每一帧图片进行处理，我该如何获取每一帧图像指针？

下面是我的程序
void getSeqName(char *inseqpath, char *seqname);

//int nImgWidth, nImgHeight;
UINT PlayVideo( LPVOID pParam )
{
int i;//,j;

BOOL bPlay = g_bPlay;
BOOL bEof = FALSE;

CYUVviewerDlg *pWin = (CYUVviewerDlg *)pParam;
UINT picsize = pWin->m_nWidth*pWin->m_nHeight;
int timespan = 1000/atoi(pWin->m_sFrameRate);

if(g_nCurrentFrame < g_nStartFrame) g_nCurrentFrame = g_nStartFrame;
if(g_nCurrentFrame > g_nEndFrame) g_nCurrentFrame = g_nEndFrame;

for(i=0; i<pWin->m_iCount; i++)
{
pWin->m_pFile[i]->Seek(g_nCurrentFrame*picsize*3/2, SEEK_SET);
pWin->m_pWnd[i]->nPicShowOrder = g_nCurrentFrame;
}

HANDLE hPlayTemp1 = OpenMutex(MUTEX_ALL_ACCESS,FALSE,"Play");

while(g_nCurrentFrame >= g_nStartFrame && g_nCurrentFrame <= g_nEndFrame && !bEof)
{
DWORD t2=GetTickCount();
g_nFrameNumber = g_nCurrentFrame;//j;

if ( WAIT_OBJECT_0 == WaitForSingleObject(hPlayTemp1,INFINITE) )
ReleaseMutex( hPlayTemp1 );

for(i=0; i<pWin->m_iCount; i++)
{
pWin->m_pFile[i]->Seek(g_nCurrentFrame*picsize*3/2, SEEK_SET);

if(picsize != pWin->m_pFile[i]->Read(pWin->m_pWnd[i]->Y,picsize))
{
AfxMessageBox("Get to end of file");
bEof = TRUE;
break;
}
if(1)//bColorImage)
{
if(picsize/4 != pWin->m_pFile[i]->Read(pWin->m_pWnd[i]->Cb,picsize/4))
{
AfxMessageBox("Get to end of file");
bEof = TRUE;
break;
}
if(picsize/4 != pWin->m_pFile[i]->Read(pWin->m_pWnd[i]->Cr,picsize/4))
{
AfxMessageBox("Get to end of file");
bEof = TRUE;
break;
}
}

pWin->m_pWnd[i]->InvalidateRect (NULL,FALSE);
pWin->m_pWnd[i]->UpdateWindow ();
pWin->m_pWnd[i]->nPicShowOrder=g_nCurrentFrame;
}

if(g_bReversePlay == FALSE)
g_nCurrentFrame++;
else
g_nCurrentFrame--;

int t1=GetTickCount()-t2;
if(t1 < timespan)
Sleep(timespan - t1); // sleep time in milliseconds
}

pWin->m_pWinThread = NULL;
AfxEndThread(0);

return 1;
}

里面我用int变量 g_currentFrame表示每一帧，最好能够获得一个指针数组，能够指向每一帧

Answer 1

格式是显示器通常使用的格式。在 YUV 空间中，每一个颜色有一个亮度信号 Y上面各个符号都带了一撇，表示该符号在原值基础上进行了gamma correction 二

追问

？？这个我知道啊。。我想知道怎么获得指针啊？