HRESULT UncompressedVideoSampleProvider::AllocateResources()

in FFmpegInterop/Source/UncompressedVideoSampleProvider.cpp [45:88]

39 lines of code
7 McCabe index (conditional complexity)


HRESULT UncompressedVideoSampleProvider::AllocateResources()
{
	HRESULT hr = S_OK;
	hr = UncompressedSampleProvider::AllocateResources();
	if (SUCCEEDED(hr))
	{
		// Setup software scaler to convert any decoder pixel format (e.g. YUV420P) to NV12 that is supported in Windows & Windows Phone MediaElement
		m_pSwsCtx = sws_getContext(
			m_pAvCodecCtx->width,
			m_pAvCodecCtx->height,
			m_pAvCodecCtx->pix_fmt,
			m_pAvCodecCtx->width,
			m_pAvCodecCtx->height,
			AV_PIX_FMT_NV12,
			SWS_BICUBIC,
			NULL,
			NULL,
			NULL);

		if (m_pSwsCtx == nullptr)
		{
			hr = E_OUTOFMEMORY;
		}
	}

	if (SUCCEEDED(hr))
	{
		m_pAvFrame = av_frame_alloc();
		if (m_pAvFrame == nullptr)
		{
			hr = E_OUTOFMEMORY;
		}
	}

	if (SUCCEEDED(hr))
	{
		if (av_image_alloc(m_rgVideoBufferData, m_rgVideoBufferLineSize, m_pAvCodecCtx->width, m_pAvCodecCtx->height, AV_PIX_FMT_NV12, 1) < 0)
		{
			hr = E_FAIL;
		}
	}

	return hr;
}