//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------

#include "core/strings/stringFunctions.h"
#include "console/console.h"
#include "console/engineAPI.h"
#include "platformWin32/platformWin32.h"


void initDisplayDeviceInfo()
{
   Con::printf( "Reading Display Device information..." );

   U8 i = 0;

   DISPLAY_DEVICEA ddData;
   ddData.cb = sizeof( DISPLAY_DEVICEA );

   // Search for the primary display adapter, because that is what the rendering
   // context will get created on.
   while( EnumDisplayDevicesA( NULL, i, &ddData, 0 ) != 0 )
   {
      // If we find the primary display adapter, break out
      if( ddData.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE )
         break;

      i++;
   }

   Con::printf( "   Primary Display Device Found:" );

   // Ok, now we have the primary display device. Parse the device information.
   char ven[9];
   char dev[9];

   ven[8] = dev[8] = '\0';

   // It may seem a bit silly here to cast, but there are two implimentations in Platform.h
   // This usage is the "const" version...
   char *pos = dStrstr( ddData.DeviceID, (const char *)"VEN_");

   dStrncpy( ven, ( pos ) ? pos : "VEN_0000", 8 );

   Con::printf( "      Vendor Id: %s", ven );

   pos = dStrstr( ddData.DeviceID, (const char *)"DEV_" );

   dStrncpy( dev, ( pos ) ? pos : "DEV_0000", 8 );

   Con::printf( "      Device Id: %s", dev );

   // We now have the information, set them to console variables so we can parse
   // the file etc in script using getField and so on.
   Con::setVariable( "$PCI_VEN", ven );
   Con::setVariable( "$PCI_DEV", dev );
}

DefineEngineFunction( initDisplayDeviceInfo, void, (), , "()"
				"@brief Initializes variables that track device and vendor information/IDs\n\n"
				"@ingroup Rendering")
{
   initDisplayDeviceInfo();
}