mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-15 05:23:02 +00:00
550 lines
No EOL
13 KiB
C++
550 lines
No EOL
13 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(),
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m_device(),
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m_deviceContext(),
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m_dup(),
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m_texture(),
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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::CanInitialize()
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{
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HDESK desktop = OpenInputDesktop(0, TRUE, GENERIC_READ);
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if (!desktop)
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return false;
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CloseDesktop(desktop);
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return true;
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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", (int)status);
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return false;
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}
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bool done = false;
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IDXGIAdapter1Ptr 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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IDXGIOutputPtr 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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SafeRelease(&output);
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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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SafeRelease(&output);
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SafeRelease(&adapter);
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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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SafeRelease(&output);
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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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SafeRelease(&adapter);
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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_11_1,
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D3D_FEATURE_LEVEL_11_0,
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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 | D3D11_CREATE_DEVICE_VIDEO_SUPPORT,
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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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SafeRelease(&adapter);
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#undef CREATE_FLAGS
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to create D3D11 device", status);
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DeInitialize();
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return false;
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}
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bool h264 = false;
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for(CaptureOptions::const_iterator it = m_options->cbegin(); it != m_options->cend(); ++it)
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{
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if (_stricmp(*it, "h264") == 0) h264 = true;
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}
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if (h264)
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{
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DEBUG_WARN("Enabling experimental H.264 compression");
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m_frameType = FRAME_TYPE_H264;
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if (!InitH264Capture())
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{
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DeInitialize();
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return false;
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}
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}
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else
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{
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m_frameType = FRAME_TYPE_ARGB;
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if (!InitRawCapture())
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{
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DeInitialize();
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return false;
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}
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}
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IDXGIDevicePtr dxgi;
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status = m_device->QueryInterface(__uuidof(IDXGIDevice), (void **)&dxgi);
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to obtain the IDXGIDevice interface from the D3D11 device", status);
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DeInitialize();
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return false;
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}
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dxgi->SetGPUThreadPriority(7);
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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_WINERROR("DuplicateOutput Failed", 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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bool DXGI::InitRawCapture()
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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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HRESULT status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture);
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to create texture", status);
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return false;
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}
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return true;
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}
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bool DXGI::InitH264Capture()
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{
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m_h264 = new MFT::H264();
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if (!m_h264->Initialize(m_device, m_width, m_height))
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{
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delete m_h264;
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m_h264 = NULL;
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return false;
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}
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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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ReleaseFrame();
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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_surfaceMapped)
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{
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m_deviceContext->Unmap(m_texture, 0);
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m_surfaceMapped = false;
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}
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SafeRelease(&m_texture);
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SafeRelease(&m_dup);
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SafeRelease(&m_output);
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SafeRelease(&m_deviceContext);
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SafeRelease(&m_device);
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SafeRelease(&m_dxgiFactory);
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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 m_frameType;
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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 Capture::DXGI::GrabFrameTexture(struct FrameInfo & frame, struct CursorInfo & cursor, ID3D11Texture2DPtr & texture, bool & timeout)
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{
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if (!m_initialized)
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return GRAB_STATUS_ERROR;
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timeout = false;
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DXGI_OUTDUPL_FRAME_INFO frameInfo;
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IDXGIResourcePtr res;
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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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while (true)
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{
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status = m_dup->AcquireNextFrame(1000, &frameInfo, &res);
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if (status == DXGI_ERROR_WAIT_TIMEOUT)
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{
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timeout = true;
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return GRAB_STATUS_OK;
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}
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if (FAILED(status))
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break;
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m_releaseFrame = true;
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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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cursor.updated = true;
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cursor.hasPos = true;
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cursor.x = frameInfo.PointerPosition.Position.x;
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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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cursor.updated = true;
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m_lastMouseVis = frameInfo.PointerPosition.Visible;
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}
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cursor.visible = m_lastMouseVis == TRUE;
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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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cursor.updated = 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 (FAILED(status))
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{
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DEBUG_WINERROR("Failed to get the new pointer shape", 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 : cursor.type = CURSOR_TYPE_COLOR; break;
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case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR: cursor.type = CURSOR_TYPE_MASKED_COLOR; break;
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case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME : 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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cursor.hasShape = true;
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cursor.shape = m_pointer;
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cursor.w = shapeInfo.Width;
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cursor.h = shapeInfo.Height;
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cursor.pitch = shapeInfo.Pitch;
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cursor.dataSize = m_pointerSize;
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}
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// if we also have frame data, break out to process it
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if (frameInfo.LastPresentTime.QuadPart != 0)
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break;
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// no frame data, clean up
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SafeRelease(&res);
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ReleaseFrame();
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// if the cursor has been updated
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if (cursor.updated)
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return GRAB_STATUS_CURSOR;
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// otherwise just try again
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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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// desktop switch, mode change, switch DWM on or off or Secure Desktop
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case DXGI_ERROR_ACCESS_LOST:
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case WAIT_ABANDONED:
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return GRAB_STATUS_REINIT;
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default:
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// unknown failure
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DEBUG_WINERROR("AcquireNextFrame failed", 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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DEBUG_WINERROR("Failed to acquire next frame", status);
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return GRAB_STATUS_ERROR;
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}
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res.QueryInterface(IID_PPV_ARGS(&texture));
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SafeRelease(&res);
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if (!texture)
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{
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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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return GRAB_STATUS_OK;
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}
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GrabStatus Capture::DXGI::ReleaseFrame()
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{
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if (!m_releaseFrame)
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return GRAB_STATUS_OK;
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m_releaseFrame = false;
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switch (m_dup->ReleaseFrame())
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{
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case S_OK:
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break;
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case DXGI_ERROR_INVALID_CALL:
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DEBUG_ERROR("Frame was already released");
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return GRAB_STATUS_ERROR;
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case WAIT_ABANDONED:
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case DXGI_ERROR_ACCESS_LOST:
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return GRAB_STATUS_REINIT;
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}
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return GRAB_STATUS_OK;
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}
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GrabStatus Capture::DXGI::GrabFrameRaw(FrameInfo & frame, struct CursorInfo & cursor)
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{
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GrabStatus result;
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ID3D11Texture2DPtr src;
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bool timeout;
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result = GrabFrameTexture(frame, cursor, src, timeout);
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if (timeout)
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return GRAB_STATUS_TIMEOUT;
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if (result != GRAB_STATUS_OK)
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return result;
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if (m_surfaceMapped)
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{
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m_deviceContext->Unmap(m_texture, 0);
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m_surfaceMapped = false;
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}
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m_deviceContext->CopyResource(m_texture, src);
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SafeRelease(&src);
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result = ReleaseFrame();
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if (result != GRAB_STATUS_OK)
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return result;
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HRESULT status;
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status = m_deviceContext->Map(m_texture, 0, D3D11_MAP_READ, 0, &m_mapping);
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to map the texture", status);
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DeInitialize();
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return GRAB_STATUS_ERROR;
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}
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m_surfaceMapped = true;
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frame.pitch = m_mapping.RowPitch;
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frame.stride = m_mapping.RowPitch >> 2;
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const unsigned int size = m_height * m_mapping.RowPitch;
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memcpySSE(frame.buffer, m_mapping.pData, LG_MIN(size, frame.bufferSize));
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return GRAB_STATUS_OK;
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}
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GrabStatus Capture::DXGI::GrabFrameH264(struct FrameInfo & frame, struct CursorInfo & cursor)
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{
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while(true)
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{
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unsigned int events = m_h264->Process();
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if (events & MFT::H264_EVENT_ERROR)
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return GRAB_STATUS_ERROR;
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if (events & MFT::H264_EVENT_NEEDS_DATA)
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{
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GrabStatus result;
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ID3D11Texture2DPtr texture;
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bool timeout;
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result = GrabFrameTexture(frame, cursor, texture, timeout);
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if (timeout)
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{
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// FIXME: this is wrong, we need to encode the last frame again
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return GRAB_STATUS_TIMEOUT;
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}
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if (result != GRAB_STATUS_OK)
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{
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ReleaseFrame();
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return result;
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}
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if (!m_h264->ProvideFrame(texture))
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return GRAB_STATUS_ERROR;
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SafeRelease(&texture);
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ReleaseFrame();
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}
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if (events & MFT::H264_EVENT_HAS_DATA)
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{
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if (!m_h264->GetFrame(frame.buffer, frame.bufferSize, frame.pitch))
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return GRAB_STATUS_ERROR;
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return GRAB_STATUS_OK;
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}
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}
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}
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GrabStatus DXGI::GrabFrame(struct FrameInfo & frame, struct CursorInfo & cursor)
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{
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frame.width = m_width;
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frame.height = m_height;
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if (m_frameType == FRAME_TYPE_H264)
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return GrabFrameH264(frame, cursor);
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else
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return GrabFrameRaw(frame, cursor);
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} |