[host] added initial framework for DXGI capture

host/Capture/DXGI.cpp

@@ -0,0 +1,71 @@
+/*
+KVMGFX Client - A KVM Client for VGA Passthrough
+Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include "DXGI.h"
+using namespace Capture;
+
+DXGI::DXGI() :
+  m_initialized(false)
+{
+
+}
+
+DXGI::~DXGI()
+{
+
+}
+
+bool DXGI::Initialize()
+{
+  if (m_initialized)
+    DeInitialize();
+
+  m_initialized = true;
+  return true;
+}
+
+void DXGI::DeInitialize()
+{
+  m_initialized = false;
+}
+
+FrameType DXGI::GetFrameType()
+{
+  if (!m_initialized)
+    return FRAME_TYPE_INVALID;
+
+  return FrameType();
+}
+
+FrameComp DXGI::GetFrameCompression()
+{
+  if (!m_initialized)
+    return FRAME_COMP_NONE;
+
+  return FrameComp();
+}
+
+size_t DXGI::GetMaxFrameSize()
+{
+  return size_t();
+}
+
+bool DXGI::GrabFrame(FrameInfo & frame)
+{
+  return false;
+}

host/Capture/DXGI.h

@@ -0,0 +1,40 @@
+/*
+KVMGFX Client - A KVM Client for VGA Passthrough
+Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#pragma once
+
+#include "ICapture.h"
+
+namespace Capture
+{
+  class DXGI : public ICapture
+  {
+  public:
+    DXGI();
+    ~DXGI();
+    bool Initialize();
+    void DeInitialize();
+    enum FrameType GetFrameType();
+    enum FrameComp GetFrameCompression();
+    size_t GetMaxFrameSize();
+    bool GrabFrame(struct FrameInfo & frame);
+
+  private:
+    bool m_initialized;
+  };
+};

host/CaptureFactory.h

@@ -21,14 +21,37 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 #define W32_LEAN_AND_MEAN
 #include <Windows.h>
 
+#include "common\debug.h"
 #include "ICapture.h"
 #include "Capture\NvFBC.h"
+#include "Capture\DXGI.h"
 
 class CaptureFactory
 {
 public:
   static ICapture * GetCaptureDevice()
   {
-    return new Capture::NvFBC();
+    ICapture *dev;
+
+    dev = new Capture::NvFBC();
+    if (dev->Initialize())
+    {
+      DEBUG_INFO("Using NvFBC");
+      return dev;
+    }
+    dev->DeInitialize();
+    delete dev;
+    
+    dev = new Capture::DXGI();
+    if (dev->Initialize())
+    {
+      DEBUG_INFO("Using DXGI");
+      return dev;
+    }
+    dev->DeInitialize();
+    delete dev;
+
+    DEBUG_ERROR("Failed to initialize a compatible capture device");
+    return NULL;
   }
 };

host/Service.cpp

@@ -45,7 +45,7 @@ bool Service::Initialize()
     DeInitialize();
 
   m_capture = CaptureFactory::GetCaptureDevice();
-  if (!m_capture || !m_capture->Initialize())
+  if (!m_capture)
   {
     DEBUG_ERROR("Failed to initialize capture interface");
     DeInitialize();

host/kvm-ivshmem-host.vcxproj

@@ -160,6 +160,7 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="Capture\DXGI.cpp" />
     <ClCompile Include="Capture\NvFBC.cpp" />
     <ClCompile Include="ivshmem.cpp" />
     <ClCompile Include="main.cpp" />
@@ -168,6 +169,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CaptureFactory.h" />
+    <ClInclude Include="Capture\DXGI.h" />
     <ClInclude Include="Capture\NvFBC.h" />
     <ClInclude Include="ICapture.h" />
     <ClInclude Include="ivshmem.h" />

host/kvm-ivshmem-host.vcxproj.filters

@@ -36,6 +36,9 @@
     <ClCompile Include="MTMemcpy.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="Capture\DXGI.cpp">
+      <Filter>Source Files\Capture</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="ivshmem.h">
@@ -59,5 +62,8 @@
     <ClInclude Include="MTMemcpy.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="Capture\DXGI.h">
+      <Filter>Header Files\Capture</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>