src/lib/platform/util/edid.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include "lib/platform/os.h"
  35 #include "StdString.h"
  36
  37 namespace PLATFORM
  38 {
  39   class CEDIDParser
  40   {
  41   public:
  42     static uint16_t GetPhysicalAddress(void);
  43
  44     static uint16_t GetPhysicalAddressFromEDID(unsigned char *data, size_t size)
  45     {
  46       return GetPhysicalAddressFromEDID((char *)data, size);
  47     }
  48
  49     static uint16_t GetPhysicalAddressFromEDID(char *data, size_t size)
  50     {
  51       uint16_t iPA(0);
  52
  53       for (size_t iPtr = 0; iPtr < size - 4; iPtr++)
  54       {
  55         if (data[iPtr]     == 0x03 &&
  56             data[iPtr + 1] == 0x0C &&
  57             data[iPtr + 2] == 0x0)
  58         {
  59           //found the hdmi marker
  60           iPA = (data[iPtr + 3] << 8) + data[iPtr + 4];
  61           break;
  62         }
  63       }
  64
  65       return iPA;
  66     }
  67   };
  68 }