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directdraw顯示yuv422(yuy2)
#include <mmsystem.h>
void CshowpicDlg::OnBnClickedButton3()
{
// TODO: 在此添加控件通知處理程序代碼
height=width=widthBytes=0;
m_screen.SetWindowPos(&CWnd::wndBottom,0,0,720,576, SWP_NOMOVE | SWP_SHOWWINDOW);
UpdateWindow();
main_window_handle = m_screen.GetSafeHwnd();
if(DD_OK!=(DirectDrawCreateEx(NULL, (void **)&lpdd7, IID_IDirectDraw7, NULL)))
{
return ;
}
// set the cooperative level for full-screen mode
if(DD_OK != lpdd7->SetCooperativeLevel(AfxGetMainWnd()->GetSafeHwnd(), DDSCL_NORMAL))
{
return ;
}
/*設置控製級時,如果應用程序請求了 DDSCL_NORMAL 模式(表明應用程序以普通窗口的形式運行),則不需要提供一個指定窗口的句柄.給窗口句柄參數為 NULL, 所有的窗口都可以被設置為普通的控製級. */
// set the display mode to 640x480x256
// clear ddsd and set size
memset(&ddsd,0,sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
// enable valid fields
ddsd.dwFlags=DDSD_CAPS;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
// create the primary surface
if(DD_OK!=(lpdd7->CreateSurface(&ddsd, &lpddsprimary, NULL)))
{
return ;
}
// 創建裁剪器
if (FAILED(lpdd7->CreateClipper(0, &lpDDClipper, NULL)))
return ;
// 與窗口工作區關聯
if (FAILED(lpDDClipper->SetHWnd(0, main_window_handle)))
{
lpDDClipper->Release();
return ;
}
if (FAILED(lpddsprimary->SetClipper(lpDDClipper)))
{
lpDDClipper->Release();
return ;
}
//
memset(&ddsd,0,sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
DDPIXELFORMAT camdispPixelFormat = {sizeof(DDPIXELFORMAT), DDPF_FOURCC, mmioFOURCC('Y','U','Y','2'), 0,0,0,0,0};
ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT;
ddsd.dwWidth = 720;
ddsd.dwHeight = 576;
ddsd.dwBackBufferCount = 0;
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN| DDSCAPS_VIDEOMEMORY;
ddsd.ddpfPixelFormat = camdispPixelFormat;
//
if(DD_OK!=(lpdd7->CreateSurface(&ddsd, &lpddsmypage[0], NULL)))
{
return ;
}
POINT p;
p.x = 0; p.y = 0;
m_screen.ClientToScreen(&p);//獲取屏幕頂點
// m_screen.GetClientRect(&rcRectDest);
rcRectDest.left = 0; rcRectDest.top=0; rcRectDest.right = 720; rcRectDest.bottom = 576;
OffsetRect(&rcRectDest, p.x, p.y);//把窗口區域轉化為屏幕區域坐標
SetRect(&rcRectSrc, 0, 0, 720, 576);//初始化窗口區域
/////////////////////////////////////////////////////////////
FILE *fp;
fp = fopen("D:\\6089.DAT","rb+");
buf[0] = new BYTE[720*2*576];
for (int i=0;i<200;i++)
{
if(DD_OK != lpddsmypage[0]->Lock(NULL,&ddsd,DDLOCK_WAIT|DDLOCK_SURFACEMEMORYPTR,NULL))
{
return ;
}
UCHAR *bmp_buffer = (UCHAR *)ddsd.lpSurface;
///////////////////////////提取數據/////////////////////////////////////////////
fread(buf[0],720*2*576,1,fp);
for (int k=0;k<576;k++)
{
memcpy(bmp_buffer+k*ddsd.lPitch,buf[0]+k*720*2,720*2);
}
Sleep(40);
//////////////////////////////////////////////////////////////////////////
//memcpy(bmp_buffer,buf[0],720*576*2);
if(DD_OK != lpddsmypage[0]->Unlock(NULL))
{
return ;
}
if(DD_OK != lpddsprimary->Blt( &rcRectDest, lpddsmypage[0], &rcRectSrc, DDBLT_WAIT, NULL))
{
return ;
}
}
fclose(fp);
if(lpddsmypage)
{
lpddsmypage[0]->Release();
lpddsmypage[0]=NULL;
}
MessageBox(_T("over"));
}
最後更新：2017-04-03 14:54:20