dierectdraw 7显示视频

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bool CDrawView::CreateSurface(HWND hWnd, Sint32 lWidth, Sint32 lHeight)
{
bool bRet = false;

do
{
HRESULT hr = DirectDrawCreate(NULL, &m_lpDDraw, NULL);
if (DD_OK != hr)
{
break;
}

hr = m_lpDDraw->SetCooperativeLevel(hWnd, DDSCL_NORMAL|DDSCL_NOWINDOWCHANGES); //lint !e620
if (DD_OK != hr)
{
break;
}

//创建主表面
DDSURFACEDESC ddsd;

memset(&ddsd, 0, sizeof(DDSURFACEDESC));
ddsd.dwSize = sizeof(DDSURFACEDESC);
ddsd.dwFlags = DDSD_CAPS;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;

hr = m_lpDDraw->CreateSurface(&ddsd, &m_lpPrimarySurface, NULL);
if (DD_OK != hr)
{
break;
}

LPDIRECTDRAWCLIPPER lpClipperBack = NULL;
hr = m_lpDDraw->CreateClipper(NULL, &lpClipperBack, NULL);
if (DD_OK != hr)
{
break;
}

lpClipperBack->SetHWnd(0, hWnd);
m_lpPrimarySurface->SetClipper(lpClipperBack);
lpClipperBack->Release();

//create off screen surface
memset(&ddsd, 0, sizeof(DDSURFACEDESC));
ddsd.dwSize = sizeof(DDSURFACEDESC);
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY;

if (m_bNeedHdc)
{
ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
}
else
{
ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
ddsd.ddpfPixelFormat.dwSize = sizeof(DDSD_PIXELFORMAT);
ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC | DDPF_YUV;
ddsd.ddpfPixelFormat.dwFourCC = MAKEFOURCC('Y', 'V', '1', '2');
ddsd.ddpfPixelFormat.dwYUVBitCount = 12;
}

ddsd.dwWidth = lWidth;
ddsd.dwHeight = lHeight;

hr = m_lpDDraw->CreateSurface(&ddsd, &m_lpOffScrnSurface, NULL);
if (DD_OK != hr)
{
break;
}

m_lFrameWidth = lWidth;
m_lFrameHeight = lHeight;

bRet = true;

} while (false);

if (!bRet)
{
ReleaseSurface();
}

return bRet;

}

bool CDrawView::ShowPictureByDraw(HWND hWnd, AVPixelFormat eFrameType, Sint32 lWidth, Sint32 lHeight, Uint8* pData,BOOL bshow)
{
if (NULL == m_lpDDraw)
{
return false;
}

Uint8* pYUV = NULL;

if (AV_PIX_FMT_YUV420P == eFrameType)
{
pYUV = pData;
}
else
{
if (NULL == m_pYUVCvt)
{
m_pYUVCvt = new(std::nothrow) CColorCvt();
if (NULL == m_pYUVCvt)
{
return false;
}
}

//封装ffmpeg转换 sws_scale
if (VID_PLAY_ERROR_SUCCESS != m_pYUVCvt->CvtColor(eFrameType, lWidth, lHeight, pData, AV_PIX_FMT_YUV420P, pYUV, NULL, true))
{
return false;
}
}

DDSURFACEDESC ddsd;

memset(&ddsd, 0, sizeof(DDSURFACEDESC));
ddsd.dwSize = sizeof(DDSURFACEDESC);
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY;
ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
ddsd.dwWidth = lWidth;
ddsd.dwHeight = lHeight;
ddsd.ddpfPixelFormat.dwSize = sizeof(DDSD_PIXELFORMAT);
ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC | DDPF_YUV;
ddsd.ddpfPixelFormat.dwFourCC = MAKEFOURCC('Y', 'V', '1', '2');
ddsd.ddpfPixelFormat.dwYUVBitCount = 12;

HRESULT hr = m_lpOffScrnSurface->Lock(NULL, &ddsd, DDLOCK_WAIT | DDLOCK_WRITEONLY, NULL); //lint !e613
while (DDERR_WASSTILLDRAWING == hr);

if (DD_OK != hr)
{
return false;
}

Uint8* lpSurface = (Uint8*)ddsd.lpSurface;

if (NULL != lpSurface)
{
for (int i=0; i<(int)ddsd.dwHeight; ++i)
{
memcpy(lpSurface, pYUV, ddsd.dwWidth);
pYUV += lWidth;
lpSurface += ddsd.lPitch;
}

for (int i=0; i<(int)ddsd.dwHeight; ++i)
{
memcpy(lpSurface, pYUV, ddsd.dwWidth/2);
pYUV += (lWidth/2);
lpSurface += (ddsd.lPitch/2);
}
}

m_lpOffScrnSurface->Unlock(NULL); //lint !e613

RECT dstRect;

GetClientRect(hWnd, &dstRect);
ClientToScreen(hWnd, (LPPOINT)&dstRect.left);
ClientToScreen(hWnd, (LPPOINT)&dstRect.right);

if(bshow)
{
hr = m_lpPrimarySurface->Blt(&dstRect, m_lpOffScrnSurface, &m_srcRect, DDBLTFAST_WAIT, NULL); //lint !e613
}
while (DDERR_WASSTILLDRAWING == hr);

return DD_OK == hr;
}

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