mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-12-23 05:53:40 +00:00
[host] initial rewrite of DXGI capture
This commit is contained in:
Geoffrey McRae
parent
dba6720724
commit
f90c258c34
@ -23,7 +23,11 @@ using namespace Capture;
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DXGI::DXGI() :
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m_initialized(false),
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m_manager(NULL)
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m_dxgiFactory(NULL),
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m_device(NULL),
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m_deviceContext(NULL),
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m_dup(NULL),
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m_texture(NULL)
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{
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}
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@ -37,31 +41,158 @@ bool DXGI::Initialize()
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if (m_initialized)
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DeInitialize();
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if (FAILED(CoInitializeEx(NULL, COINIT_MULTITHREADED)))
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HRESULT status;
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status = CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void **)(&m_dxgiFactory));
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if (FAILED(status))
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{
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DEBUG_ERROR("CoInitializeEx failed");
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DEBUG_ERROR("Failed to create DXGIFactory: %08x", status);
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return false;
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}
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m_manager = new DXGIManager();
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m_manager->SetCaptureSource(CSDesktop);
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bool done = false;
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CComPtr<IDXGIAdapter1> adapter;
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for (int i = 0; m_dxgiFactory->EnumAdapters1(i, &adapter) != DXGI_ERROR_NOT_FOUND; i++)
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{
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CComPtr<IDXGIOutput> output;
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for (int i = 0; adapter->EnumOutputs(i, &output) != DXGI_ERROR_NOT_FOUND; i++)
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{
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DXGI_OUTPUT_DESC outputDesc;
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output->GetDesc(&outputDesc);
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if (!outputDesc.AttachedToDesktop)
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{
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output.Release();
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continue;
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}
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RECT rect;
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m_manager->GetOutputRect(rect);
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m_width = rect.right - rect.left;
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m_height = rect.bottom - rect.top;
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m_output = output;
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if (!m_output)
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{
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output.Release();
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adapter.Release();
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DEBUG_ERROR("Failed to get IDXGIOutput1");
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DeInitialize();
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return false;
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}
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m_width = outputDesc.DesktopCoordinates.right - outputDesc.DesktopCoordinates.left;
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m_height = outputDesc.DesktopCoordinates.bottom - outputDesc.DesktopCoordinates.top;
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output.Release();
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done = true;
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break;
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}
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if (done)
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break;
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adapter.Release();
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}
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if (!done)
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{
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DEBUG_ERROR("Failed to locate a valid output device");
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DeInitialize();
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return false;
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}
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static const D3D_FEATURE_LEVEL featureLevels[] = {
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D3D_FEATURE_LEVEL_10_1,
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D3D_FEATURE_LEVEL_10_0,
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D3D_FEATURE_LEVEL_9_3,
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D3D_FEATURE_LEVEL_9_2,
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D3D_FEATURE_LEVEL_9_1
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};
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status = D3D11CreateDevice(
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adapter,
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D3D_DRIVER_TYPE_UNKNOWN,
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NULL,
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D3D11_CREATE_DEVICE_DEBUG,
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featureLevels, ARRAYSIZE(featureLevels),
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D3D11_SDK_VERSION,
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&m_device,
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&m_featureLevel,
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&m_deviceContext
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);
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adapter.Release();
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if (FAILED(status))
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{
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DEBUG_ERROR("Failed to create D3D11 device");
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DeInitialize();
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return false;
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}
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CComQIPtr<IDXGIDevice1> device1 = m_device;
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if (!device1)
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{
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DEBUG_ERROR("Failed to get IDXGIDevice1");
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DeInitialize();
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return false;
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}
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status = m_output->DuplicateOutput(m_device, &m_dup);
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if (FAILED(status))
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{
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DEBUG_ERROR("DuplicateOutput Failed: %08x", status);
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DeInitialize();
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return false;
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}
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D3D11_TEXTURE2D_DESC texDesc;
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ZeroMemory(&texDesc, sizeof(texDesc));
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texDesc.Width = m_width;
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texDesc.Height = m_height;
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texDesc.MipLevels = 1;
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texDesc.ArraySize = 1;
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texDesc.SampleDesc.Count = 1;
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texDesc.SampleDesc.Quality = 0;
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texDesc.Usage = D3D11_USAGE_STAGING;
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texDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
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texDesc.BindFlags = 0;
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texDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
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texDesc.MiscFlags = 0;
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status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture);
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if (FAILED(status))
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{
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DEBUG_ERROR("Failed to create texture: %08x", status);
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DeInitialize();
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return false;
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}
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if (!m_memcpy.Initialize())
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{
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DEBUG_ERROR("Failed to initialize memcpy");
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return false;
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}
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m_initialized = true;
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return true;
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}
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void DXGI::DeInitialize()
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{
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if (m_manager)
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{
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delete m_manager;
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m_manager = NULL;
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}
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m_memcpy.DeInitialize();
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if (m_texture)
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m_texture.Release();
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if (m_dup)
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m_dup.Release();
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if (m_output)
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m_output.Release();
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if (m_deviceContext)
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m_deviceContext.Release();
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if (m_device)
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m_device.Release();
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if (m_dxgiFactory)
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m_dxgiFactory.Release();
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m_initialized = false;
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}
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@ -84,7 +215,7 @@ FrameComp DXGI::GetFrameCompression()
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size_t DXGI::GetMaxFrameSize()
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{
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if (!m_initialized);
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if (!m_initialized)
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return 0;
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return m_width * m_height * 4;
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@ -92,26 +223,85 @@ size_t DXGI::GetMaxFrameSize()
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bool DXGI::GrabFrame(FrameInfo & frame)
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{
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RECT rect;
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m_manager->GetOutputRect(rect);
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m_width = rect.right - rect.left;
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m_height = rect.bottom - rect.top;
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DXGI_OUTDUPL_FRAME_INFO frameInfo;
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CComPtr<IDXGIResource> res;
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HRESULT result;
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HRESULT status;
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for(int i = 0; i < 2; ++i)
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{
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result = m_manager->GetOutputBits((BYTE*)frame.buffer, rect);
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if (SUCCEEDED(result))
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status = m_dup->AcquireNextFrame(INFINITE, &frameInfo, &res);
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if (SUCCEEDED(status))
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break;
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// desktop switch, mode change or switch DWM on or off
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if (status == DXGI_ERROR_ACCESS_LOST)
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{
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DeInitialize();
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if (!Initialize())
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{
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DEBUG_ERROR("Failed to re-initialize after access was lost");
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return false;
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}
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continue;
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}
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// unknown failure
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DEBUG_INFO("AcquireNextFrame failed: %08x", status);
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return false;
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}
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if (FAILED(result))
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// retry count exceeded
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if (FAILED(status))
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{
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DEBUG_ERROR("Failed to acquire next frame");
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return false;
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}
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CComQIPtr<ID3D11Texture2D> src = res;
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if (!src)
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{
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DEBUG_ERROR("Failed to get src ID3D11Texture2D");
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return false;
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}
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D3D11_TEXTURE2D_DESC desc;
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src->GetDesc(&desc);
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m_deviceContext->CopyResource(m_texture, src);
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m_dup->ReleaseFrame();
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res.Release();
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src.Release();
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CComQIPtr<IDXGISurface1> surface = m_texture;
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if (!surface)
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{
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DEBUG_ERROR("Failed to get IDXGISurface1");
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return false;
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}
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DXGI_MAPPED_RECT rect;
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status = surface->Map(&rect, DXGI_MAP_READ);
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if (FAILED(status))
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{
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DEBUG_ERROR("Failed to map surface: %08x", status);
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return false;
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}
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m_width = desc.Width;
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m_height = desc.Height;
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frame.width = desc.Width;
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frame.height = desc.Height;
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frame.stride = rect.Pitch / 4;
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frame.outSize = min(frame.bufferSize, m_height * rect.Pitch);
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m_memcpy.Copy(frame.buffer, rect.pBits, frame.outSize);
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status = surface->Unmap();
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if (FAILED(status))
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{
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DEBUG_ERROR("Failed to unmap surface: %08x", status);
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return false;
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}
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frame.width = m_width;
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frame.height = m_height;
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frame.stride = m_width;
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frame.outSize = m_width * m_height * 4;
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return true;
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}
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@ -19,10 +19,13 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#pragma once
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#include "ICapture.h"
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#include <vendor\DXGICapture\DXGIManager.h>
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#include "MTMemcpy.h"
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#define W32_LEAN_AND_MEAN
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#include <windows.h>
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#include <dxgi1_2.h>
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#include <d3d11.h>
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#include <atlbase.h>
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namespace Capture
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{
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@ -40,8 +43,16 @@ namespace Capture
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private:
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bool m_initialized;
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DXGIManager * m_manager;
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MTMemcpy m_memcpy;
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unsigned int m_width;
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unsigned int m_height;
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CComPtr<IDXGIFactory1> m_dxgiFactory;
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CComPtr<ID3D11Device> m_device;
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D3D_FEATURE_LEVEL m_featureLevel;
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CComPtr<ID3D11DeviceContext> m_deviceContext;
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CComQIPtr<IDXGIOutput1> m_output;
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CComPtr<IDXGIOutputDuplication> m_dup;
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CComPtr<ID3D11Texture2D> m_texture;
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};
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};
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