src/lib/platform/adl/adl-edid.cpp

   1 /*
   2  * This file is part of the libCEC(R) library.
   3  *
   4  * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited.  All rights reserved.
   5  * libCEC(R) is an original work, containing original code.
   6  *
   7  * libCEC(R) is a trademark of Pulse-Eight Limited.
   8  *
   9  * This program is dual-licensed; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  *
  23  *
  24  * Alternatively, you can license this library under a commercial license,
  25  * please contact Pulse-Eight Licensing for more information.
  26  *
  27  * For more information contact:
  28  * Pulse-Eight Licensing       <license@pulse-eight.com>
  29  *     http://www.pulse-eight.com/
  30  *     http://www.pulse-eight.net/
  31  */
  32
  33 #include "env.h"
  34 #include "adl-edid.h"
  35
  36 // for dlsym and friends
  37 #if defined(__WINDOWS__)
  38 #include "../windows/dlfcn-win32.h"
  39 #endif
  40
  41 using namespace PLATFORM;
  42
  43 CADLEdidParser::CADLEdidParser(void) :
  44   m_bOpen(false),
  45   m_handle(NULL)
  46 {
  47   Initialise();
  48 }
  49
  50 CADLEdidParser::~CADLEdidParser(void)
  51 {
  52   CloseLibrary();
  53 }
  54
  55 bool CADLEdidParser::OpenLibrary(void)
  56 {
  57   CloseLibrary();
  58
  59 #if !defined(__WINDOWS__)
  60   m_handle = dlopen("libatiadlxx.so", RTLD_LAZY|RTLD_GLOBAL);
  61 #else
  62   m_handle = LoadLibrary("atiadlxx.dll");
  63   // try 32 bit
  64   if (!m_handle)
  65     m_handle = LoadLibrary("atiadlxy.dll");
  66 #endif
  67
  68   return m_handle != NULL;
  69 }
  70
  71 void CADLEdidParser::CloseLibrary(void)
  72 {
  73   if (LibOpen())
  74     ADL_Main_Control_Destroy();
  75
  76   if (m_handle)
  77     dlclose(m_handle);
  78   m_handle = NULL;
  79 }
  80
  81 void *__stdcall ADL_AllocMemory(int iSize)
  82 {
  83   void* lpBuffer = malloc(iSize);
  84   return lpBuffer;
  85 }
  86
  87 void CADLEdidParser::Initialise(void)
  88 {
  89   if (OpenLibrary())
  90   {
  91     // dlsym the methods we need
  92     ADL_Main_Control_Create          = (ADL_MAIN_CONTROL_CREATE)          dlsym(m_handle, "ADL_Main_Control_Create");
  93           ADL_Main_Control_Destroy         = (ADL_MAIN_CONTROL_DESTROY)         dlsym(m_handle, "ADL_Main_Control_Destroy");
  94           ADL_Adapter_NumberOfAdapters_Get = (ADL_ADAPTER_NUMBEROFADAPTERS_GET) dlsym(m_handle, "ADL_Adapter_NumberOfAdapters_Get");
  95           ADL_Adapter_AdapterInfo_Get      = (ADL_ADAPTER_ADAPTERINFO_GET)      dlsym(m_handle, "ADL_Adapter_AdapterInfo_Get");
  96           ADL_Display_DisplayInfo_Get      = (ADL_DISPLAY_DISPLAYINFO_GET)      dlsym(m_handle, "ADL_Display_DisplayInfo_Get");
  97           ADL_Display_EdidData_Get         = (ADL_DISPLAY_EDIDDATA_GET)         dlsym(m_handle, "ADL_Display_EdidData_Get");
  98
  99           // check whether they could all be resolved
 100     if (ADL_Main_Control_Create &&
 101         ADL_Main_Control_Destroy &&
 102         ADL_Adapter_NumberOfAdapters_Get &&
 103         ADL_Adapter_AdapterInfo_Get &&
 104         ADL_Display_DisplayInfo_Get &&
 105         ADL_Display_EdidData_Get)
 106     {
 107       // and try to initialise it
 108       m_bOpen = (ADL_OK == ADL_Main_Control_Create(ADL_AllocMemory, 1));
 109     }
 110   }
 111 }
 112
 113 int CADLEdidParser::GetNumAdapters(void)
 114 {
 115   int iNumAdapters(0);
 116
 117   if (!LibOpen() || ADL_OK != ADL_Adapter_NumberOfAdapters_Get(&iNumAdapters))
 118     iNumAdapters = 0;
 119
 120   return iNumAdapters;
 121 }
 122
 123 LPAdapterInfo CADLEdidParser::GetAdapterInfo(int iNumAdapters)
 124 {
 125   // validate input
 126   if (iNumAdapters <= 0)
 127     return NULL;
 128
 129   LPAdapterInfo adapterInfo = (LPAdapterInfo)malloc(sizeof(AdapterInfo) * iNumAdapters);
 130   memset(adapterInfo, 0, sizeof(AdapterInfo) * iNumAdapters);
 131
 132   // get the info
 133   ADL_Adapter_AdapterInfo_Get(adapterInfo, sizeof(AdapterInfo) * iNumAdapters);
 134
 135   return adapterInfo;
 136 }
 137
 138 bool CADLEdidParser::GetAdapterEDID(int iAdapterIndex, int iDisplayIndex, ADLDisplayEDIDData *data)
 139 {
 140   // validate input
 141   if (iAdapterIndex < 0 || iDisplayIndex < 0)
 142     return false;
 143
 144   memset(data, 0, sizeof(ADLDisplayEDIDData));
 145   data->iSize = sizeof(ADLDisplayEDIDData);
 146   data->iBlockIndex = 1;
 147
 148   return (ADL_Display_EdidData_Get(iAdapterIndex, iDisplayIndex, data) == ADL_OK);
 149 }
 150
 151 uint16_t CADLEdidParser::GetPhysicalAddress(void)
 152 {
 153   uint16_t iPA(0);
 154
 155   // get the number of adapters
 156   int iNumAdapters = GetNumAdapters();
 157   if (iNumAdapters <= 0)
 158     return 0;
 159
 160   // get the adapter info
 161   LPAdapterInfo adapterInfo = GetAdapterInfo(iNumAdapters);
 162   if (!adapterInfo)
 163     return 0;
 164
 165   // iterate over it
 166   for (int iAdapterPtr = 0; iAdapterPtr < iNumAdapters; iAdapterPtr++)
 167   {
 168     int iNumDisplays(-1);
 169     LPADLDisplayInfo displayInfo(NULL);
 170     int iAdapterIndex = adapterInfo[iAdapterPtr].iAdapterIndex;
 171
 172     // get the display info
 173     if (ADL_OK != ADL_Display_DisplayInfo_Get(iAdapterIndex, &iNumDisplays, &displayInfo, 0))
 174       continue;
 175
 176     // iterate over it
 177     for (int iDisplayPtr = 0; iDisplayPtr < iNumDisplays; iDisplayPtr++)
 178                 {
 179       // check whether the display is connected
 180       if ((displayInfo[iDisplayPtr].iDisplayInfoValue & ADL_DISPLAY_CONNECTED) != ADL_DISPLAY_CONNECTED)
 181         continue;
 182
 183       int iDisplayIndex = displayInfo[iDisplayPtr].displayID.iDisplayLogicalIndex;
 184
 185       // try to get the EDID
 186       ADLDisplayEDIDData edidData;
 187       if (GetAdapterEDID(iAdapterIndex, iDisplayIndex, &edidData))
 188                         {
 189         // try to get the PA from the EDID
 190         iPA = CEDIDParser::GetPhysicalAddressFromEDID(edidData.cEDIDData, edidData.iEDIDSize);
 191
 192         // found it
 193         if (iPA != 0)
 194           break;
 195                         }
 196                 }
 197
 198     free(displayInfo);
 199   }
 200
 201   free(adapterInfo);
 202
 203   return iPA;
 204 }