STDMETHODIMP MFStream::BeginRead(BYTE *pb, ULONG cb, IMFAsyncCallback *pCallback,
IUnknown *punkState)
{
if (!pCallback || !pb)
return E_INVALIDARG;
Q_ASSERT(m_currentReadResult == NULL);
AsyncReadState *state = new (std::nothrow) AsyncReadState(pb, cb);
if (state == NULL)
return E_OUTOFMEMORY;
HRESULT hr = MFCreateAsyncResult(state, pCallback, punkState, &m_currentReadResult);
state->Release();
if (FAILED(hr))
return hr;
QCoreApplication::postEvent(this, new QEvent(QEvent::User));
return hr;
}
/** Begins an asyncronous read */
STDMETHODIMP FImfByteStream::BeginRead( BYTE* pb, ULONG cb, IMFAsyncCallback* pCallback, IUnknown* punkState )
{
HRESULT HResult = S_OK;
if( !pCallback || !pb )
return E_INVALIDARG;
IMFAsyncResult* Result = NULL;
AsyncReadState* State = new( std::nothrow ) AsyncReadState( pb, cb );
if( State == NULL )
return E_OUTOFMEMORY;
HResult = MFCreateAsyncResult( State, pCallback, punkState, &Result );
State->Release( );
if( SUCCEEDED( HResult ) )
{
IsCurrentlyReading = true;
HResult = MFPutWorkItem( MFASYNC_CALLBACK_QUEUE_STANDARD, this, Result );
Result->Release( );
}
return HResult;
}