HRESULT D3DPresentEngine::PresentSample(IMFSample* pSample, LONGLONG llTarget)
{
HRESULT hr = S_OK;
IMFMediaBuffer* pBuffer = NULL;
IDirect3DSurface9* pSurface = NULL;
IDirect3DSwapChain9* pSwapChain = NULL;
if (pSample)
{
// Get the buffer from the sample.
CHECK_HR(hr = pSample->GetBufferByIndex(0, &pBuffer));
// Get the surface from the buffer.
CHECK_HR(hr = MFGetService(pBuffer, MR_BUFFER_SERVICE, __uuidof(IDirect3DSurface9), (void**)&pSurface));
}
else if (m_pSurfaceRepaint)
{
// Redraw from the last surface.
pSurface = m_pSurfaceRepaint;
pSurface->AddRef();
}
if (pSurface)
{
// Get the swap chain from the surface.
CHECK_HR(hr = pSurface->GetContainer(__uuidof(IDirect3DSwapChain9), (LPVOID*)&pSwapChain));
// Present the swap chain.
CHECK_HR(hr = PresentSwapChain(pSwapChain, pSurface));
// Store this pointer in case we need to repaint the surface.
CopyComPointer(m_pSurfaceRepaint, pSurface);
}
done:
SAFE_RELEASE(pSwapChain);
SAFE_RELEASE(pSurface);
SAFE_RELEASE(pBuffer);
if (FAILED(hr))
{
if (hr == D3DERR_DEVICELOST || hr == D3DERR_DEVICENOTRESET || hr == D3DERR_DEVICEHUNG)
{
// Ignore. We need to reset or re-create the device, but this method
// is probably being called from the scheduler thread, which is not the
// same thread that created the device. The Reset(Ex) method must be
// called from the thread that created the device.
// The presenter will detect the state when it calls CheckDeviceState()
// on the next sample.
hr = S_OK;
}
}
return hr;
}
HRESULT Scheduler::StartScheduler(IMFClock *pClock)
{
if (m_hSchedulerThread != NULL)
{
return E_UNEXPECTED;
}
HRESULT hr = S_OK;
DWORD dwID = 0;
CopyComPointer(m_pClock, pClock);
// Set a high the timer resolution (ie, short timer period).
timeBeginPeriod(1);
// Create an event to wait for the thread to start.
m_hThreadReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
if (m_hThreadReadyEvent == NULL)
{
CHECK_HR(hr = HRESULT_FROM_WIN32(GetLastError()));
}
// Create an event to wait for flush commands to complete.
m_hFlushEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
if (m_hFlushEvent == NULL)
{
CHECK_HR(hr = HRESULT_FROM_WIN32(GetLastError()));
}
// Create the scheduler thread.
m_hSchedulerThread = CreateThread(NULL, 0, SchedulerThreadProc, (LPVOID)this, 0, &dwID);
if (m_hSchedulerThread == NULL)
{
CHECK_HR(hr = HRESULT_FROM_WIN32(GetLastError()));
}
HANDLE hObjects[] = { m_hThreadReadyEvent, m_hSchedulerThread };
DWORD dwWait = 0;
// Wait for the thread to signal the "thread ready" event.
dwWait = WaitForMultipleObjects(2, hObjects, FALSE, INFINITE); // Wait for EITHER of these handles.
if (WAIT_OBJECT_0 != dwWait)
{
// The thread terminated early for some reason. This is an error condition.
CloseHandle(m_hSchedulerThread);
m_hSchedulerThread = NULL;
CHECK_HR(hr = E_UNEXPECTED);
}
m_dwThreadID = dwID;
done:
// Regardless success/failure, we are done using the "thread ready" event.
if (m_hThreadReadyEvent)
{
CloseHandle(m_hThreadReadyEvent);
m_hThreadReadyEvent = NULL;
}
return hr;
}
HRESULT D3DPresentEngine::PresentSample(IMFSample* pSample, LONGLONG llTarget)
{
HRESULT hr = S_OK;
IMFMediaBuffer* pBuffer = NULL;
IDirect3DSurface9* pSurface = NULL;
// IDirect3DSwapChain9* pSwapChain = NULL;
IDirect3DSurface9 * back_buffer = NULL;
if (pSample)
{
// Get the buffer from the sample.
CHECK_HR(hr = pSample->GetBufferByIndex(0, &pBuffer));
// Get the surface from the buffer.
CHECK_HR(hr = MFGetService(pBuffer, MR_BUFFER_SERVICE, __uuidof(IDirect3DSurface9), (void**)&pSurface));
}
else if (m_pSurfaceRepaint)
{
// Redraw from the last surface.
pSurface = m_pSurfaceRepaint;
pSurface->AddRef();
}
if (pSurface)
{
// Get the swap chain from the surface.
// CHECK_HR(hr = pSurface->GetContainer(__uuidof(IDirect3DSwapChain9), (LPVOID*)&pSwapChain));
// Present the swap chain.
// CHECK_HR(hr = PresentSwapChain(pSwapChain, pSurface));
CHECK_HR(hr = m_pDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back_buffer));
CHECK_HR(hr = m_pDevice->StretchRect(pSurface, NULL, back_buffer, NULL, D3DTEXF_LINEAR));
CHECK_HR(hr = m_pDevice->Present(NULL, NULL, NULL, NULL));
// Store this pointer in case we need to repaint the surface.
CopyComPointer(m_pSurfaceRepaint, pSurface);
}
else
{
// No surface. All we can do is paint a black rectangle.
PaintFrameWithGDI();
}
done:
// SAFE_RELEASE(pSwapChain);
SAFE_RELEASE(pSurface);
SAFE_RELEASE(pBuffer);
SAFE_RELEASE(back_buffer);
if (FAILED(hr))
{
if (hr == D3DERR_DEVICELOST || hr == D3DERR_DEVICENOTRESET || hr == D3DERR_DEVICEHUNG)
{
// We failed because the device was lost. Fill the destination rectangle.
PaintFrameWithGDI();
// Ignore. We need to reset or re-create the device, but this method
// is probably being called from the scheduler thread, which is not the
// same thread that created the device. The Reset(Ex) method must be
// called from the thread that created the device.
// The presenter will detect the state when it calls CheckDeviceState()
// on the next sample.
hr = S_OK;
}
}
return hr;
}
