PROSAGA码农传奇-ffmpeg-rgb32数据资源映射。使用directx memcpy

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  <P>
    没有人回复。我解决了我的问题。
我修改了一些代码，我不确定它是否解决了这个问题。黑屏原因的问题是我的矩阵。
  </p>
   <pre>
    <code>
      D3D11_TEXTURE2D_DESC TextureDesc;
D3D11_RENDER_TARGET_VIEW_DESC RenderTargetViewDesc;
D3D11_SHADER_RESOURCE_VIEW_DESC ShaderResourceViewDesc;

ZeroMemory(&TextureDesc, sizeof(TextureDesc));

TextureDesc.Height = pFrame->height;
TextureDesc.Width = pFrame->width;
TextureDesc.MipLevels = 1;
TextureDesc.ArraySize = 1;
TextureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;/*DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;*/            //size 32bit
TextureDesc.SampleDesc.Count = 1;
TextureDesc.SampleDesc.Quality = 0;
TextureDesc.Usage = D3D11_USAGE_DYNAMIC;
TextureDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
TextureDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
TextureDesc.MiscFlags = 0;

DWORD*  pInitImage = new DWORD[pFrame->width*pFrame->height];
memset(pInitImage, 0, sizeof(DWORD)*pFrame->width*pFrame->height);
D3D11_SUBRESOURCE_DATA InitData;
InitData.pSysMem = pInitImage;
InitData.SysMemPitch = pFrame->width*sizeof(DWORD);
InitData.SysMemSlicePitch = 0;
result = m_device->CreateTexture2D(&TextureDesc, &InitData, &m_2DTex);
if (FAILED(result))     return false;

ShaderResourceViewDesc.Format = TextureDesc.Format;
ShaderResourceViewDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
ShaderResourceViewDesc.Texture2D.MostDetailedMip = 0;
ShaderResourceViewDesc.Texture2D.MipLevels = 1;

result = m_device->CreateShaderResourceView(m_2DTex, &ShaderResourceViewDesc, &m_ShaderResourceView);
if (FAILED(result))     return false;

D3D11_MAPPED_SUBRESOURCE S_mappedResource_tt;
ZeroMemory(&S_mappedResource_tt, sizeof(S_mappedResource_tt));
DWORD   Stride = pFrame->linesize[0];

result = m_deviceContext->Map(m_2DTex, 0, D3D11_MAP_WRITE_DISCARD, 0, &S_mappedResource_tt);
if (FAILED(result)) return false;

BYTE * pFrameData = pFrame->data[0];   // now we have a pointer that points to begin of the destination buffer
BYTE* mappedData = (BYTE *)S_mappedResource_tt.pData;// +S_mappedResource_tt.RowPitch;
for (auto i = 0; i < pFrame->height; i++) {     
    memcpy(mappedData, pFrameData, Stride);
    mappedData += S_mappedResource_tt.RowPitch;
    pFrameData += Stride;
}

m_deviceContext->Unmap(m_2DTex, 0);

</code>
  </pre>
  <P>
    它很有效。我希望那对我做同样事情的人会有所帮助。
  </p>
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