#include "DXGIManager.h"
#include "common\debug.h"

DXGIPointerInfo::DXGIPointerInfo(BYTE* pPointerShape, UINT uiPointerShapeBufSize, DXGI_OUTDUPL_FRAME_INFO fi, DXGI_OUTDUPL_POINTER_SHAPE_INFO psi)
	:	m_pPointerShape(pPointerShape),
		m_uiPointerShapeBufSize(uiPointerShapeBufSize),
		m_FI(fi),
		m_PSI(psi)
{
}

DXGIPointerInfo::~DXGIPointerInfo()
{
	if(m_pPointerShape)
	{
		delete [] m_pPointerShape;
	}
}

BYTE* DXGIPointerInfo::GetBuffer()
{
	return m_pPointerShape;
}

UINT DXGIPointerInfo::GetBufferSize()
{
	return m_uiPointerShapeBufSize;
}

DXGI_OUTDUPL_FRAME_INFO& DXGIPointerInfo::GetFrameInfo()
{
	return m_FI;
}

DXGI_OUTDUPL_POINTER_SHAPE_INFO& DXGIPointerInfo::GetShapeInfo()
{
	return m_PSI;
}

DXGIOutputDuplication::DXGIOutputDuplication(IDXGIAdapter1* pAdapter,
	ID3D11Device* pD3DDevice,
	ID3D11DeviceContext* pD3DDeviceContext,
	IDXGIOutput1* pDXGIOutput1,
	IDXGIOutputDuplication* pDXGIOutputDuplication)
	:	m_Adapter(pAdapter),
		m_D3DDevice(pD3DDevice),
		m_D3DDeviceContext(pD3DDeviceContext),
		m_DXGIOutput1(pDXGIOutput1),
		m_DXGIOutputDuplication(pDXGIOutputDuplication)
{
}

HRESULT DXGIOutputDuplication::GetDesc(DXGI_OUTPUT_DESC& desc)
{
	m_DXGIOutput1->GetDesc(&desc);
	return S_OK;
}

HRESULT DXGIOutputDuplication::AcquireNextFrame(IDXGISurface1** pDXGISurface, DXGIPointerInfo*& pDXGIPointer)
{
	DXGI_OUTDUPL_FRAME_INFO fi;
	CComPtr<IDXGIResource> spDXGIResource;
	HRESULT hr = m_DXGIOutputDuplication->AcquireNextFrame(20, &fi, &spDXGIResource);
	if(FAILED(hr))
	{
    DEBUG_INFO("m_DXGIOutputDuplication->AcquireNextFrame failed with hr=0x%08x", hr);
		return hr;
	}

	CComQIPtr<ID3D11Texture2D> spTextureResource = spDXGIResource;

	D3D11_TEXTURE2D_DESC desc;
	spTextureResource->GetDesc(&desc);

	D3D11_TEXTURE2D_DESC texDesc;
	ZeroMemory( &texDesc, sizeof(texDesc) );
	texDesc.Width = desc.Width;
	texDesc.Height = desc.Height;
	texDesc.MipLevels = 1;
	texDesc.ArraySize = 1;
	texDesc.SampleDesc.Count = 1;
	texDesc.SampleDesc.Quality = 0;
	texDesc.Usage = D3D11_USAGE_STAGING;
	texDesc.Format = desc.Format;
	texDesc.BindFlags = 0;
	texDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
	texDesc.MiscFlags = 0;

	CComPtr<ID3D11Texture2D> spD3D11Texture2D = NULL;
	hr = m_D3DDevice->CreateTexture2D(&texDesc, NULL, &spD3D11Texture2D);
	if(FAILED(hr))
		return hr;

	m_D3DDeviceContext->CopyResource(spD3D11Texture2D, spTextureResource);

	CComQIPtr<IDXGISurface1> spDXGISurface = spD3D11Texture2D;

	*pDXGISurface = spDXGISurface.Detach();

  if (pDXGIPointer)
    pDXGIPointer->GetFrameInfo().PointerPosition.Visible = fi.PointerPosition.Visible;
	
	// Updating mouse pointer, if visible
	if(fi.PointerPosition.Visible)
	{
		BYTE* pPointerShape = new BYTE[fi.PointerShapeBufferSize];

		DXGI_OUTDUPL_POINTER_SHAPE_INFO psi = {};
		UINT uiPointerShapeBufSize = fi.PointerShapeBufferSize;
		hr = m_DXGIOutputDuplication->GetFramePointerShape(uiPointerShapeBufSize, pPointerShape, &uiPointerShapeBufSize, &psi);
		if(hr == DXGI_ERROR_MORE_DATA)
		{
			pPointerShape = new BYTE[uiPointerShapeBufSize];
	
			hr = m_DXGIOutputDuplication->GetFramePointerShape(uiPointerShapeBufSize, pPointerShape, &uiPointerShapeBufSize, &psi);
		}

		if(hr == S_OK)
		{
      DEBUG_INFO("PointerPosition Visible=%d x=%d y=%d w=%d h=%d type=%d\n", fi.PointerPosition.Visible, fi.PointerPosition.Position.x, fi.PointerPosition.Position.y, psi.Width, psi.Height, psi.Type);

			if((psi.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME ||
			    psi.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR ||
			    psi.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR) &&
				psi.Width <= 128 && psi.Height <= 128)
			{
				// Here we can obtain pointer shape
				if(pDXGIPointer)
				{
					delete pDXGIPointer;
				}

				pDXGIPointer = new DXGIPointerInfo(pPointerShape, uiPointerShapeBufSize, fi, psi);
				
				pPointerShape = NULL;
			}

			DXGI_OUTPUT_DESC outDesc;
			GetDesc(outDesc);

			if(pDXGIPointer)
			{
				pDXGIPointer->GetFrameInfo().PointerPosition.Position.x = outDesc.DesktopCoordinates.left + fi.PointerPosition.Position.x;
				pDXGIPointer->GetFrameInfo().PointerPosition.Position.y = outDesc.DesktopCoordinates.top + fi.PointerPosition.Position.y;
			}
		}

		if(pPointerShape)
		{
			delete [] pPointerShape;
		}
	}

	return hr;
}

HRESULT DXGIOutputDuplication::ReleaseFrame()
{
	m_DXGIOutputDuplication->ReleaseFrame();
	return S_OK;
}

bool DXGIOutputDuplication::IsPrimary()
{
	DXGI_OUTPUT_DESC outdesc;
	m_DXGIOutput1->GetDesc(&outdesc);
			
	MONITORINFO mi;
	mi.cbSize = sizeof(MONITORINFO);
	GetMonitorInfo(outdesc.Monitor, &mi);
	if(mi.dwFlags & MONITORINFOF_PRIMARY)
	{
		return true;
	}
	return false;
}

DXGIManager::DXGIManager()
{
	m_CaptureSource = CSUndefined;
	SetRect(&m_rcCurrentOutput, 0, 0, 0, 0);
	m_pBuf = NULL;
	m_pDXGIPointer = NULL;
	m_bInitialized = false;
}

DXGIManager::~DXGIManager()
{
	if(m_pBuf)
	{
		delete [] m_pBuf;
		m_pBuf = NULL;
	}

	if(m_pDXGIPointer)
	{
		delete m_pDXGIPointer;
		m_pDXGIPointer = NULL;
	}
}

HRESULT DXGIManager::SetCaptureSource(CaptureSource cs)
{
	m_CaptureSource = cs;
	return S_OK;
}

CaptureSource DXGIManager::GetCaptureSource()
{
	return m_CaptureSource;
}

HRESULT DXGIManager::Init()
{
	if(m_bInitialized)
		return S_OK;

	HRESULT hr = CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void**)(&m_spDXGIFactory1) );
	if( FAILED(hr) )
	{
    DEBUG_ERROR("Failed to CreateDXGIFactory1 hr=%08x", hr);
		return hr;
	}

	// Getting all adapters
	vector<CComPtr<IDXGIAdapter1>> vAdapters;

	CComPtr<IDXGIAdapter1> spAdapter; 
	for(int i=0; m_spDXGIFactory1->EnumAdapters1(i, &spAdapter) != DXGI_ERROR_NOT_FOUND; i++)
	{ 
		vAdapters.push_back(spAdapter);
		spAdapter.Release();
	}

	// Iterating over all adapters to get all outputs
	for(vector<CComPtr<IDXGIAdapter1>>::iterator AdapterIter = vAdapters.begin();
		AdapterIter != vAdapters.end();
		AdapterIter++)
	{
		vector<CComPtr<IDXGIOutput>> vOutputs;

		CComPtr<IDXGIOutput> spDXGIOutput;
		for(int i=0; (*AdapterIter)->EnumOutputs(i, &spDXGIOutput) != DXGI_ERROR_NOT_FOUND; i++)
		{ 
			DXGI_OUTPUT_DESC outputDesc;
			spDXGIOutput->GetDesc(&outputDesc);

      DEBUG_ERROR("Display output found. DeviceName=%ls  AttachedToDesktop=%d Rotation=%d DesktopCoordinates={(%d,%d),(%d,%d)}",
				outputDesc.DeviceName, 
				outputDesc.AttachedToDesktop, 
				outputDesc.Rotation, 
				outputDesc.DesktopCoordinates.left, 
				outputDesc.DesktopCoordinates.top, 
				outputDesc.DesktopCoordinates.right, 
				outputDesc.DesktopCoordinates.bottom);

			if(outputDesc.AttachedToDesktop)
			{
				vOutputs.push_back(spDXGIOutput);
			}

			spDXGIOutput.Release();
		}

		if(vOutputs.size() == 0)
			continue;

		// Creating device for each adapter that has the output
		CComPtr<ID3D11Device> spD3D11Device;
		CComPtr<ID3D11DeviceContext> spD3D11DeviceContext;
		D3D_FEATURE_LEVEL fl = D3D_FEATURE_LEVEL_9_1;
		hr = D3D11CreateDevice((*AdapterIter), D3D_DRIVER_TYPE_UNKNOWN, NULL, 0, NULL, 0, D3D11_SDK_VERSION, &spD3D11Device, &fl, &spD3D11DeviceContext);
		if( FAILED(hr) )
		{
      DEBUG_ERROR("Failed to create D3D11CreateDevice hr=%08x", hr);
			return hr;
		}

		for(std::vector<CComPtr<IDXGIOutput>>::iterator OutputIter = vOutputs.begin(); 
			OutputIter != vOutputs.end(); 
			OutputIter++)
		{
			CComQIPtr<IDXGIOutput1> spDXGIOutput1 = *OutputIter;
      if (!spDXGIOutput1)
      {
        DEBUG_ERROR("spDXGIOutput1 is NULL");
        continue;
      }

      CComQIPtr<IDXGIDevice1> spDXGIDevice = spD3D11Device;
      if (!spDXGIDevice)
      {
        DEBUG_ERROR("spDXGIDevice is NULL");
        continue;
      }

			CComPtr<IDXGIOutputDuplication> spDXGIOutputDuplication;
			hr = spDXGIOutput1->DuplicateOutput(spDXGIDevice, &spDXGIOutputDuplication);
      if (FAILED(hr))
      {
        DEBUG_ERROR("Failed to duplicate output hr=%08x", hr);
        continue;
      }

			m_vOutputs.push_back(
				DXGIOutputDuplication((*AdapterIter),
					spD3D11Device,
					spD3D11DeviceContext,
					spDXGIOutput1,
					spDXGIOutputDuplication));
		}
	}

	hr = m_spWICFactory.CoCreateInstance(CLSID_WICImagingFactory);
	if( FAILED(hr) )
	{
		DEBUG_ERROR("Failed to create WICImagingFactory hr=%08x", hr);
		return hr;
	}

	m_bInitialized = true;

	return S_OK;
}

HRESULT DXGIManager::GetOutputRect(RECT& rc)
{
	// Nulling rc just in case...
	SetRect(&rc, 0, 0, 0, 0);

	HRESULT hr = Init();
	if(hr != S_OK)
		return hr;

	vector<DXGIOutputDuplication> vOutputs = GetOutputDuplication();

	RECT rcShare;
	SetRect(&rcShare, 0, 0, 0, 0);

	for(vector<DXGIOutputDuplication>::iterator iter = vOutputs.begin();
		iter != vOutputs.end();
		iter++)
	{
		DXGIOutputDuplication& out = *iter;
	
		DXGI_OUTPUT_DESC outDesc;
		out.GetDesc(outDesc);
		RECT rcOutCoords = outDesc.DesktopCoordinates;

		UnionRect(&rcShare, &rcShare, &rcOutCoords);
	}

	CopyRect(&rc, &rcShare);

	return S_OK;
}

HRESULT DXGIManager::GetOutputBits(BYTE* pBits, RECT& rcDest)
{
	HRESULT hr = S_OK;

	DWORD dwDestWidth = rcDest.right - rcDest.left;
	DWORD dwDestHeight = rcDest.bottom - rcDest.top;

	RECT rcOutput;
	hr = GetOutputRect(rcOutput);
	if( FAILED(hr) )
		return hr;

	DWORD dwOutputWidth = rcOutput.right - rcOutput.left;
	DWORD dwOutputHeight = rcOutput.bottom - rcOutput.top;

	BYTE* pBuf = NULL;
	if(rcOutput.right > (LONG)dwDestWidth || rcOutput.bottom > (LONG)dwDestHeight)
	{
		// Output is larger than pBits dimensions
		if(!m_pBuf || !EqualRect(&m_rcCurrentOutput, &rcOutput))
		{
			DWORD dwBufSize = dwOutputWidth*dwOutputHeight*4;

			if(m_pBuf)
			{
				delete [] m_pBuf;
				m_pBuf = NULL;
			}

			m_pBuf = new BYTE[dwBufSize];

			CopyRect(&m_rcCurrentOutput, &rcOutput);
		}

		pBuf = m_pBuf;
	}
	else
	{
		// Output is smaller than pBits dimensions
		pBuf = pBits;
		dwOutputWidth = dwDestWidth;
		dwOutputHeight = dwDestHeight;
	}

	vector<DXGIOutputDuplication> vOutputs = GetOutputDuplication();

	for(vector<DXGIOutputDuplication>::iterator iter = vOutputs.begin();
		iter != vOutputs.end();
		iter++)
	{
		DXGIOutputDuplication& out = *iter;
	
		DXGI_OUTPUT_DESC outDesc;
		out.GetDesc(outDesc);
		RECT rcOutCoords = outDesc.DesktopCoordinates;

		CComPtr<IDXGISurface1> spDXGISurface1;
		hr = out.AcquireNextFrame(&spDXGISurface1, m_pDXGIPointer);
		if( FAILED(hr) )
			break;

		DXGI_MAPPED_RECT map;
		spDXGISurface1->Map(&map, DXGI_MAP_READ);

		RECT rcDesktop = outDesc.DesktopCoordinates;
		DWORD dwWidth = rcDesktop.right - rcDesktop.left;
		DWORD dwHeight = rcDesktop.bottom - rcDesktop.top;

		OffsetRect(&rcDesktop, -rcOutput.left, -rcOutput.top);

		DWORD dwMapPitchPixels = map.Pitch/4;

		switch(outDesc.Rotation)
		{
			case DXGI_MODE_ROTATION_IDENTITY:
				{
					// Just copying
					DWORD dwStripe = dwWidth*4;
					for(unsigned int i=0; i<dwHeight; i++)
					{
						memcpy_s(pBuf + (rcDesktop.left + (i + rcDesktop.top)*dwOutputWidth)*4, dwStripe, map.pBits + i*map.Pitch, dwStripe);
					}
				}
				break;
			case DXGI_MODE_ROTATION_ROTATE90:
				{
					// Rotating at 90 degrees
					DWORD* pSrc = (DWORD*)map.pBits;
					DWORD* pDst = (DWORD*)pBuf;
					for(unsigned int j=0; j<dwHeight; j++)
					{
						for(unsigned int i=0; i<dwWidth; i++)
						{
							*(pDst + (rcDesktop.left + (j + rcDesktop.top)*dwOutputWidth) + i) = *(pSrc + j + dwMapPitchPixels*(dwWidth - i - 1));
						}
					}
				}
				break;
			case DXGI_MODE_ROTATION_ROTATE180:
				{
					// Rotating at 180 degrees
					DWORD* pSrc = (DWORD*)map.pBits;
					DWORD* pDst = (DWORD*)pBuf;
					for(unsigned int j=0; j<dwHeight; j++)
					{
						for(unsigned int i=0; i<dwWidth; i++)
						{
							*(pDst + (rcDesktop.left + (j + rcDesktop.top)*dwOutputWidth) + i) = *(pSrc + (dwWidth - i - 1) + dwMapPitchPixels*(dwHeight - j - 1));
						}
					}
				}
				break;
			case DXGI_MODE_ROTATION_ROTATE270:
				{
					// Rotating at 270 degrees
					DWORD* pSrc = (DWORD*)map.pBits;
					DWORD* pDst = (DWORD*)pBuf;
					for(unsigned int j=0; j<dwHeight; j++)
					{
						for(unsigned int i=0; i<dwWidth; i++)
						{
							*(pDst + (rcDesktop.left + (j + rcDesktop.top)*dwOutputWidth) + i) = *(pSrc + (dwHeight - j - 1) + dwMapPitchPixels*i);
						}
					}
				}
				break;
		}
		
		spDXGISurface1->Unmap();

		out.ReleaseFrame();
	}

	if(FAILED(hr))
		return hr;

	// We have the pBuf filled with current desktop/monitor image.
	if(pBuf != pBits)
	{
    DrawMousePointer(pBuf, rcOutput, rcOutput);

		// pBuf contains the image that should be resized
		CComPtr<IWICBitmap> spBitmap = NULL;
		hr = m_spWICFactory->CreateBitmapFromMemory(dwOutputWidth, dwOutputHeight, GUID_WICPixelFormat32bppBGRA, dwOutputWidth*4, dwOutputWidth*dwOutputHeight*4, (BYTE*)pBuf, &spBitmap);
		if( FAILED(hr) )
			return hr;

		CComPtr<IWICBitmapScaler> spBitmapScaler = NULL;
		hr = m_spWICFactory->CreateBitmapScaler(&spBitmapScaler);
		if( FAILED(hr) )
			return hr;
		
		dwOutputWidth = rcOutput.right - rcOutput.left;
		dwOutputHeight = rcOutput.bottom - rcOutput.top;

		double aspect = (double)dwOutputWidth/(double)dwOutputHeight;

		DWORD scaledWidth = dwDestWidth;
		DWORD scaledHeight = dwDestHeight;

		if(aspect > 1)
		{
			scaledWidth = dwDestWidth;
			scaledHeight = (DWORD)(dwDestWidth/aspect);
		}
		else
		{
			scaledWidth = (DWORD)(aspect*dwDestHeight);
			scaledHeight = dwDestHeight;
		}

		spBitmapScaler->Initialize(
			spBitmap, scaledWidth, scaledHeight, WICBitmapInterpolationModeNearestNeighbor);

		spBitmapScaler->CopyPixels(NULL, scaledWidth*4, dwDestWidth*dwDestHeight*4, pBits);
	}
  else
    DrawMousePointer(pBuf, rcOutput, rcDest);
	return hr;
}

void DXGIManager::DrawMousePointer(BYTE* pDesktopBits, RECT rcDesktop, RECT rcDest)
{
  const DXGI_OUTDUPL_FRAME_INFO frameInfo = m_pDXGIPointer->GetFrameInfo();

	if(!m_pDXGIPointer || !frameInfo.PointerPosition.Visible)
		return;

	const DWORD dwDesktopWidth = rcDesktop.right - rcDesktop.left;
	const DWORD dwDesktopHeight = rcDesktop.bottom - rcDesktop.top;
	
  const DWORD dwDestWidth = rcDest.right - rcDest.left;
	const DWORD dwDestHeight = rcDest.bottom - rcDest.top;

  const DXGI_OUTDUPL_POINTER_SHAPE_INFO shapeInfo = m_pDXGIPointer->GetShapeInfo();
	const int PtrX = frameInfo.PointerPosition.Position.x - rcDesktop.left;
	const int PtrY = frameInfo.PointerPosition.Position.y - rcDesktop.top;

  BYTE *PtrBuf = m_pDXGIPointer->GetBuffer();

	switch(shapeInfo.Type)
	{
		case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR:
			{
        // alpha blend the cursor
        const int maxX = min(shapeInfo.Width , dwDesktopWidth  - PtrX);
        const int maxY = min(shapeInfo.Height, dwDesktopHeight - PtrY);
        for(int y = 0; y < maxY; ++y)
        {
          for (int x = 0; x < maxX; ++x)
          {
            BYTE *srcPix = &PtrBuf[y * shapeInfo.Pitch + x * 4];
            BYTE *dstPix = &pDesktopBits[((PtrY + y) * dwDesktopWidth * 4) + (PtrX + x) * 4];

            // if fully transparent just continue
            if (srcPix[3] == 0x00)
              continue;

            // if fully opaque just copy the pixel
            if (srcPix[3] == 0xff)
            {
              dstPix[0] = srcPix[0];
              dstPix[1] = srcPix[1];
              dstPix[2] = srcPix[2];
              continue;
            }

            //TODO: optimize this to use integer math

            float src[3];
            float dst[3];
            float alpha;
            static const float conv = 1.0f / 255.0f;

            // convert to float
            src[0] = (float)srcPix[0] * conv;
            src[1] = (float)srcPix[1] * conv;
            src[2] = (float)srcPix[2] * conv;
            dst[0] = (float)dstPix[0] * conv;
            dst[1] = (float)dstPix[1] * conv;
            dst[2] = (float)dstPix[2] * conv;
            alpha  = (float)srcPix[3] * conv;

            // blend and convert back to 8bit
            dstPix[0] = (BYTE)(max(0.0f, min(1.0f, alpha * src[0] + dst[0] * (1.0f - alpha))) * 255.0f);
            dstPix[1] = (BYTE)(max(0.0f, min(1.0f, alpha * src[1] + dst[1] * (1.0f - alpha))) * 255.0f);
            dstPix[2] = (BYTE)(max(0.0f, min(1.0f, alpha * src[2] + dst[2] * (1.0f - alpha))) * 255.0f);
          }
        }
        break;
			}
			break;
		case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME:
		case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR:
			{
				RECT rcPointer;
	
				if(shapeInfo.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME)
				{
					SetRect(&rcPointer, PtrX, PtrY, PtrX + shapeInfo.Width, PtrY + shapeInfo.Height/2);
				}
				else
				{
					SetRect(&rcPointer, PtrX, PtrY, PtrX + shapeInfo.Width, PtrY + shapeInfo.Height);
				}

				RECT rcDesktopPointer;
				IntersectRect(&rcDesktopPointer, &rcPointer, &rcDesktop);

				CopyRect(&rcPointer, &rcDesktopPointer);
				OffsetRect(&rcPointer, -PtrX, -PtrY);

				BYTE* pShapeBuffer = m_pDXGIPointer->GetBuffer();
				UINT* pDesktopBits32 = (UINT*)pDesktopBits;

				if(shapeInfo.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME)
				{
					for(int j = rcPointer.top, jDP = rcDesktopPointer.top;
						j<rcPointer.bottom && jDP<rcDesktopPointer.bottom; 
						j++, jDP++)
					{
						for(int i = rcPointer.left, iDP = rcDesktopPointer.left;
							i<rcPointer.right && iDP<rcDesktopPointer.right; 
							i++, iDP++)
						{
							BYTE Mask = 0x80 >> (i % 8);
							BYTE AndMask = pShapeBuffer[i/8 + (shapeInfo.Pitch)*j] & Mask;
							BYTE XorMask = pShapeBuffer[i/8 + (shapeInfo.Pitch)*(j + shapeInfo.Height / 2)] & Mask;

							UINT AndMask32 = (AndMask) ? 0xFFFFFFFF : 0xFF000000;
							UINT XorMask32 = (XorMask) ? 0x00FFFFFF : 0x00000000;

							pDesktopBits32[jDP*dwDestWidth + iDP] = (pDesktopBits32[jDP*dwDestWidth + iDP] & AndMask32) ^ XorMask32;
						}
					}
				}
				else
				{
					UINT* pShapeBuffer32 = (UINT*)pShapeBuffer;
					for(int j = rcPointer.top, jDP = rcDesktopPointer.top;
						j<rcPointer.bottom && jDP<rcDesktopPointer.bottom; 
						j++, jDP++)
					{
						for(int i = rcPointer.left, iDP = rcDesktopPointer.left;
							i<rcPointer.right && iDP<rcDesktopPointer.right; 
							i++, iDP++)
						{
							// Set up mask
							UINT MaskVal = 0xFF000000 & pShapeBuffer32[i + (shapeInfo.Pitch/4)*j];
							if (MaskVal)
							{
								// Mask was 0xFF
								pDesktopBits32[jDP*dwDestWidth + iDP] = (pDesktopBits32[jDP*dwDestWidth + iDP] ^ pShapeBuffer32[i + (shapeInfo.Pitch/4)*j]) | 0xFF000000;
							}
							else
							{
								// Mask was 0x00 - replacing pixel
								pDesktopBits32[jDP*dwDestWidth + iDP] = pShapeBuffer32[i + (shapeInfo.Pitch/4)*j];
							}
						}
					}
				}
			}
			break;
	}
}

vector<DXGIOutputDuplication> DXGIManager::GetOutputDuplication()
{
	vector<DXGIOutputDuplication> outputs;
	switch(m_CaptureSource)
	{
		case CSMonitor1:
		{
			// Return the one with IsPrimary
			for(vector<DXGIOutputDuplication>::iterator iter = m_vOutputs.begin();
				iter != m_vOutputs.end();
				iter++)
			{
				DXGIOutputDuplication& out = *iter;
				if(out.IsPrimary())
				{
					outputs.push_back(out);
					break;
				}
			}
		}
		break;

		case CSMonitor2:
		{
			// Return the first with !IsPrimary
			for(vector<DXGIOutputDuplication>::iterator iter = m_vOutputs.begin();
				iter != m_vOutputs.end();
				iter++)
			{
				DXGIOutputDuplication& out = *iter;
				if(!out.IsPrimary())
				{
					outputs.push_back(out);
					break;
				}
			}
		}
		break;

		case CSDesktop:
		{
			// Return all outputs
			for(vector<DXGIOutputDuplication>::iterator iter = m_vOutputs.begin();
				iter != m_vOutputs.end();
				iter++)
			{
				DXGIOutputDuplication& out = *iter;
				outputs.push_back(out);
			}
		}
		break;
	}
	return outputs;
}

BOOL CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData)
{
    int *Count = (int*)dwData;
    (*Count)++;
    return TRUE;
}

int DXGIManager::GetMonitorCount()
{
    int Count = 0;
    if (EnumDisplayMonitors(NULL, NULL, MonitorEnumProc, (LPARAM)&Count))
        return Count;
    return -1;
}