ConvertRGBToNV12 问题记录

记录一下在转换过程中出现问题，由于宽和高设置设置不正确，造成转换的数据变成全零，全绿。

NVENCSTATUS CNvEncoder::ConvertRGBToNV12(IDirect3DSurface9 *pSrcRGB, IDirect3DSurface9 *pNV12Dst, uint32_t uWidth, uint32_t uHeight)
{
	DXVA2_VideoProcessBltParams vpblt;
	DXVA2_VideoSample vs;

	D3DSURFACE_DESC desc;
	pSrcRGB->GetDesc(&desc);
	//此处将数据进行进行拉伸，如果数据不正确，数据会变成0
	RECT srcRect = { 0, 0, desc.Width, desc.Height };
	RECT dstRect = { 0, 0, uWidth, uHeight };

	// Input
	memset(&vs, 0, sizeof(vs));
	vs.PlanarAlpha.ll = 0x10000;
	vs.SrcSurface = pSrcRGB;
	vs.SrcRect = srcRect;
	vs.DstRect = dstRect;
	vs.SampleFormat.SampleFormat = DXVA2_SampleProgressiveFrame;
	vs.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_MPEG2;
	vs.SampleFormat.NominalRange = DXVA2_NominalRange_0_255;
	vs.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT601;

	// Output
	memset(&vpblt, 0, sizeof(vpblt));
	vpblt.TargetRect = dstRect;
	vpblt.DestFormat = vs.SampleFormat;
	vpblt.DestFormat.SampleFormat = DXVA2_SampleProgressiveFrame;
	vpblt.Alpha.ll = 0x10000;
	vpblt.TargetFrame = vs.Start;
	vpblt.ProcAmpValues.Brightness = m_Brightness.DefaultValue;
	vpblt.ProcAmpValues.Contrast = m_Contrast.DefaultValue;
	vpblt.ProcAmpValues.Hue = m_Hue.DefaultValue;
	vpblt.ProcAmpValues.Saturation = m_Saturation.DefaultValue;
	vpblt.BackgroundColor.Y = 0x1000;
	vpblt.BackgroundColor.Cb = 0x8000;
	vpblt.BackgroundColor.Cr = 0x8000;
	vpblt.BackgroundColor.Alpha = 0xffff;
	HRESULT hr = m_pDXVA2VideoProcessor->VideoProcessBlt(pNV12Dst, &vpblt, &vs, 1, NULL);
	return NV_ENC_SUCCESS;
}