HRESULT D3DPresentEngine::GetSwapChainPresentParameters(IMFMediaType *pType, D3DPRESENT_PARAMETERS* pPP)
{
// Caller holds the object lock.
HRESULT hr = S_OK;
UINT32 width = 0, height = 0;
DWORD d3dFormat = 0;
// Helper object for reading the proposed type.
VideoType videoType(pType);
if (m_hwnd == NULL)
{
return MF_E_INVALIDREQUEST;
}
ZeroMemory(pPP, sizeof(D3DPRESENT_PARAMETERS));
// Get some information about the video format.
CHECK_HR(hr = videoType.GetFrameDimensions(&width, &height));
CHECK_HR(hr = videoType.GetFourCC(&d3dFormat));
ZeroMemory(pPP, sizeof(D3DPRESENT_PARAMETERS));
pPP->BackBufferWidth = width;
pPP->BackBufferHeight = height;
pPP->Windowed = TRUE;
pPP->SwapEffect = D3DSWAPEFFECT_COPY;
pPP->BackBufferFormat = (D3DFORMAT)d3dFormat;
pPP->hDeviceWindow = m_hwnd;
pPP->Flags = D3DPRESENTFLAG_VIDEO;
pPP->PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;
D3DDEVICE_CREATION_PARAMETERS params;
CHECK_HR(hr = m_pDevice->GetCreationParameters(¶ms));
if (params.DeviceType != D3DDEVTYPE_HAL)
{
pPP->Flags |= D3DPRESENTFLAG_LOCKABLE_BACKBUFFER;
}
done:
return S_OK;
}
// Creates video samples based on a specified media type.
HRESULT D3DPresentEngine::CreateVideoSamples(IMFMediaType *pFormat, VideoSampleList& videoSampleQueue)
{
if (pFormat == NULL)
{
return MF_E_UNEXPECTED;
}
HRESULT hr = S_OK;
D3DFORMAT d3dFormat = D3DFMT_UNKNOWN;
IMFSample *pVideoSample = NULL;
AutoLock lock(m_ObjectLock);
ReleaseResources();
// Helper object for reading the proposed type.
VideoType videoType(pFormat);
// Get some information about the video format.
hr = videoType.GetFrameDimensions(&m_Width, &m_Height);
CHECK_HR(hr, "D3DPresentEngine::CreateVideoSamples VideoType::GetFrameDimensions() failed");
hr = GetAspectRatio(pFormat, m_ArX, m_ArY);
if (FAILED(hr))
{
m_ArX = m_Width;
m_ArY = m_Height;
}
//hr = videoType.GetFourCC((DWORD*)&d3dFormat);
//CHECK_HR(hr, "D3DPresentEngine::CreateVideoSamples VideoType::GetFourCC() failed");
// Morpheus_xx, 2016-08-14: we force a format without alpha channel here, because rendering subtitles with MPC-HC engine expects this format. Actually I can't imagine a video format
// that actually delivers alpha channel information.
d3dFormat = D3DFMT_X8R8G8B8;
for (int i = 0; i < NUM_PRESENTER_BUFFERS; i++)
{
CComPtr<IDirect3DTexture9> texture;
hr = m_pDevice->CreateTexture(m_Width, m_Height, 1, D3DUSAGE_RENDERTARGET, d3dFormat, D3DPOOL_DEFAULT, &texture, NULL);
if (FAILED(hr))
{
Log("D3DPresentEngine::CreateVideoSamples Could not create texture %d. Error 0x%x", i, hr);
break;
}
CComPtr<IDirect3DSurface9> surface;
hr = texture->GetSurfaceLevel(0, &surface);
if (FAILED(hr))
{
Log("D3DPresentEngine::CreateVideoSamples Could not get surface from texture. Error 0x%x", hr);
break;
}
hr = MFCreateVideoSampleFromSurface(surface, &pVideoSample);
if (FAILED(hr))
{
Log("D3DPresentEngine::CreateVideoSamples CreateVideoSampleFromSurface failed: 0x%x", hr);
break;
}
// Add it to the list.
hr = videoSampleQueue.InsertBack(pVideoSample);
if (FAILED(hr))
{
SAFE_RELEASE(pVideoSample);
ReleaseResources();
return hr;
}
SAFE_RELEASE(pVideoSample);
}
return hr;
}