mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-09-20 09:21:33 +00:00
416 lines
10 KiB
C++
416 lines
10 KiB
C++
/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "Capture/DXGI.h"
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using namespace Capture;
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#include "common/debug.h"
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#include "common/memcpySSE.h"
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DXGI::DXGI() :
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m_options(NULL),
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m_initialized(false),
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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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m_pointer(NULL)
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{
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}
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DXGI::~DXGI()
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{
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}
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bool DXGI::Initialize(CaptureOptions * options)
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{
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if (m_initialized)
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DeInitialize();
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m_options = options;
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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("Failed to create DXGIFactory: %08x", status);
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return false;
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}
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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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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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#if DEBUG
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#define CREATE_FLAGS (D3D11_CREATE_DEVICE_DEBUG)
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#else
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#define CREATE_FLAGS (0)
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#endif
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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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CREATE_FLAGS,
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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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#undef CREATE_FLAGS
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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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// we try this twice just incase we still get an error
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// on re-initialization
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for(int i = 0; i < 2; ++i)
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{
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status = m_output->DuplicateOutput(m_device, &m_dup);
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if (SUCCEEDED(status))
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break;
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Sleep(200);
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}
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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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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_pointer)
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{
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delete[] m_pointer;
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m_pointer = NULL;
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m_pointerBufSize = 0;
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}
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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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FrameType DXGI::GetFrameType()
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{
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if (!m_initialized)
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return FRAME_TYPE_INVALID;
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return FRAME_TYPE_ARGB;
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}
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size_t DXGI::GetMaxFrameSize()
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{
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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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}
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GrabStatus DXGI::GrabFrame(FrameInfo & frame)
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{
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if (!m_initialized)
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return GRAB_STATUS_ERROR;
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DXGI_OUTDUPL_FRAME_INFO frameInfo;
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CComPtr<IDXGIResource> res;
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HRESULT status;
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bool cursorUpdate = false;
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for(int i = 0; i < 2; ++i)
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{
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while(true)
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{
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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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// if we have a mouse update
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if (frameInfo.LastMouseUpdateTime.QuadPart)
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{
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if (
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m_lastMousePos.x != frameInfo.PointerPosition.Position.x ||
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m_lastMousePos.y != frameInfo.PointerPosition.Position.y
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) {
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cursorUpdate = true;
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frame.cursor.hasPos = true;
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frame.cursor.x = frameInfo.PointerPosition.Position.x;
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frame.cursor.y = frameInfo.PointerPosition.Position.y;
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m_lastMousePos.x = frameInfo.PointerPosition.Position.x;
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m_lastMousePos.y = frameInfo.PointerPosition.Position.y;
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}
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if (m_lastMouseVis != frameInfo.PointerPosition.Visible)
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{
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cursorUpdate = true;
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m_lastMouseVis = frameInfo.PointerPosition.Visible;
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}
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frame.cursor.visible = m_lastMouseVis;
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}
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// if the pointer shape has changed
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if (frameInfo.PointerShapeBufferSize > 0)
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{
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cursorUpdate = true;
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if (m_pointerBufSize < frameInfo.PointerShapeBufferSize)
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{
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if (m_pointer)
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delete[] m_pointer;
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m_pointer = new BYTE[frameInfo.PointerShapeBufferSize];
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m_pointerBufSize = frameInfo.PointerShapeBufferSize;
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}
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DXGI_OUTDUPL_POINTER_SHAPE_INFO shapeInfo;
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status = m_dup->GetFramePointerShape(m_pointerBufSize, m_pointer, &m_pointerSize, &shapeInfo);
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if (!SUCCEEDED(status))
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{
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m_dup->ReleaseFrame();
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DEBUG_ERROR("Failed to get the new pointer shape: %08x", status);
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return GRAB_STATUS_ERROR;
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}
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switch (shapeInfo.Type)
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{
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case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR : frame.cursor.type = CURSOR_TYPE_COLOR; break;
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case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR: frame.cursor.type = CURSOR_TYPE_MASKED_COLOR; break;
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case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME : frame.cursor.type = CURSOR_TYPE_MONOCHROME; break;
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default:
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DEBUG_ERROR("Invalid cursor type");
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return GRAB_STATUS_ERROR;
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}
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frame.cursor.hasShape = true;
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frame.cursor.shape = m_pointer;
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frame.cursor.w = shapeInfo.Width;
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frame.cursor.h = shapeInfo.Height;
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frame.cursor.pitch = shapeInfo.Pitch;
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frame.cursor.dataSize = m_pointerSize;
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}
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if (frameInfo.AccumulatedFrames > 0)
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break;
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m_dup->ReleaseFrame();
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res.Release();
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if (cursorUpdate)
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return GRAB_STATUS_CURSOR;
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}
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if (SUCCEEDED(status))
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break;
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switch (status)
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{
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case DXGI_ERROR_ACCESS_LOST: // desktop switch, mode change or switch DWM on or off
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return GRAB_STATUS_REINIT;
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case WAIT_ABANDONED: // this can happen also during desktop switches, not documented by MS though
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{
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// see if we can open the desktop, if not the secure desktop
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// is active so just wait for it instead of aborting out
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HDESK desktop = NULL;
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while(!desktop)
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{
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desktop = OpenInputDesktop(0, TRUE, GENERIC_READ);
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if (desktop)
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break;
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Sleep(100);
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}
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CloseDesktop(desktop);
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if (!ReInitialize())
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{
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DEBUG_ERROR("Failed to ReInitialize after lost access to desktop");
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return GRAB_STATUS_ERROR;
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}
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continue;
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}
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default:
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// unknown failure
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DEBUG_INFO("AcquireNextFrame failed: %08x", status);
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return GRAB_STATUS_ERROR;
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}
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}
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// retry count exceeded
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if (FAILED(status))
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{
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m_dup->ReleaseFrame();
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DEBUG_ERROR("Failed to acquire next frame");
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return GRAB_STATUS_ERROR;
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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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m_dup->ReleaseFrame();
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DEBUG_ERROR("Failed to get src ID3D11Texture2D");
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return GRAB_STATUS_ERROR;
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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 GRAB_STATUS_ERROR;
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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 GRAB_STATUS_ERROR;
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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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memcpySSE(frame.buffer, rect.pBits, min(frame.bufferSize, m_height * rect.Pitch));
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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 GRAB_STATUS_ERROR;
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}
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return GRAB_STATUS_OK;
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} |