Function DSGetLock

source/SoundCore.cpp:108–147

//-----------------------------------------------------------------------------

HRESULT DSGetLock(const std::shared_ptr<SoundBuffer>& pVoice, uint32_t dwOffset, uint32_t dwBytes,
					  SHORT** ppDSLockedBuffer0, DWORD* pdwDSLockedBufferSize0,
					  SHORT** ppDSLockedBuffer1, DWORD* pdwDSLockedBufferSize1)
{
	DWORD nStatus;
	HRESULT hr = pVoice->GetStatus(&nStatus);
	if(hr != DS_OK)
		return hr;

	if(nStatus & DSBSTATUS_BUFFERLOST)
	{
		do
		{
			hr = pVoice->Restore();
			if(hr == DSERR_BUFFERLOST)
				Sleep(10);
		}
		while(hr != DS_OK);
	}

	// Get write only pointer(s) to sound buffer
	if(dwBytes == 0)
	{
		if(FAILED(hr = pVoice->Lock(0, 0,
								(void**)ppDSLockedBuffer0, pdwDSLockedBufferSize0,
								(void**)ppDSLockedBuffer1, pdwDSLockedBufferSize1,
								DSBLOCK_ENTIREBUFFER)))
			return hr;
	}
	else
	{
		if(FAILED(hr = pVoice->Lock(dwOffset, dwBytes,
								(void**)ppDSLockedBuffer0, pdwDSLockedBufferSize0,
								(void**)ppDSLockedBuffer1, pdwDSLockedBufferSize1,
								0)))
			return hr;
	}

	return hr;
}

//-----------------------------------------------------------------------------