src/lib/implementations/SLCommandHandler.cpp

   1 /*
   2  * This file is part of the libCEC(R) library.
   3  *
   4  * libCEC(R) is Copyright (C) 2011 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 "SLCommandHandler.h"
  34 #include "../devices/CECBusDevice.h"
  35 #include "../devices/CECPlaybackDevice.h"
  36 #include "../CECProcessor.h"
  37 #include "../platform/timeutils.h"
  38
  39 using namespace CEC;
  40
  41 #define SL_COMMAND_UNKNOWN_01        0x01
  42 #define SL_COMMAND_UNKNOWN_02        0x02
  43 #define SL_COMMAND_UNKNOWN_03        0x05
  44
  45 #define SL_COMMAND_REQUEST_VENDOR_ID 0xa0
  46 #define SL_COMMAND_CONNECT_REQUEST   0x04
  47 #define SL_COMMAND_CONNECT_ACCEPT    0x05
  48
  49 CSLCommandHandler::CSLCommandHandler(CCECBusDevice *busDevice) :
  50     CCECCommandHandler(busDevice),
  51     m_bAwaitingReceiveFailed(false),
  52     m_bSLEnabled(false),
  53     m_bSkipNextVendorId(false)
  54 {
  55 }
  56
  57 bool CSLCommandHandler::HandleVendorCommand(const cec_command &command)
  58 {
  59   if (command.parameters.size == 1 &&
  60       command.parameters[0] == SL_COMMAND_UNKNOWN_01)
  61   {
  62     /* enable SL */
  63     cec_command response;
  64     cec_command::Format(response, command.destination, command.initiator, CEC_OPCODE_VENDOR_COMMAND, m_busDevice->GetTransmitTimeout());
  65     response.PushBack(SL_COMMAND_UNKNOWN_02);
  66     response.PushBack(SL_COMMAND_UNKNOWN_03);
  67
  68     m_busDevice->GetProcessor()->Transmit(response);
  69     return true;
  70   }
  71   else if (command.parameters.size == 2 &&
  72       command.parameters[0] == SL_COMMAND_CONNECT_REQUEST)
  73   {
  74     /* enable SL */
  75     cec_command response;
  76     cec_command::Format(response, command.destination, command.initiator, CEC_OPCODE_VENDOR_COMMAND, m_busDevice->GetTransmitTimeout());
  77     response.PushBack(SL_COMMAND_CONNECT_ACCEPT);
  78     response.PushBack(m_busDevice->GetProcessor()->GetLogicalAddresses().primary);
  79     m_busDevice->GetProcessor()->Transmit(response);
  80
  81     /* set deck status for the playback device */
  82     TransmitDeckStatus(command.initiator);
  83     return true;
  84   }
  85   else if (command.parameters.size == 1 &&
  86       command.parameters[0] == SL_COMMAND_REQUEST_VENDOR_ID)
  87   {
  88     TransmitLGVendorId(m_busDevice->GetProcessor()->GetLogicalAddresses().primary, CECDEVICE_BROADCAST);
  89     return true;
  90   }
  91
  92   return false;
  93 }
  94
  95 void CSLCommandHandler::TransmitDeckStatus(const cec_logical_address iDestination)
  96 {
  97   /* set deck status for the playback device */
  98   CCECBusDevice *primary = m_busDevice->GetProcessor()->m_busDevices[m_busDevice->GetProcessor()->GetLogicalAddresses().primary];
  99   if (primary->GetType() == CEC_DEVICE_TYPE_PLAYBACK_DEVICE || primary->GetType() == CEC_DEVICE_TYPE_RECORDING_DEVICE)
 100   {
 101     ((CCECPlaybackDevice *)primary)->SetDeckStatus(CEC_DECK_INFO_OTHER_STATUS_LG);
 102     ((CCECPlaybackDevice *)primary)->TransmitDeckStatus(iDestination);
 103   }
 104 }
 105
 106 bool CSLCommandHandler::TransmitLGVendorId(const cec_logical_address iInitiator, const cec_logical_address iDestination)
 107 {
 108   cec_command response;
 109   cec_command::Format(response, iInitiator, iDestination, CEC_OPCODE_DEVICE_VENDOR_ID, m_busDevice->GetTransmitTimeout());
 110   response.parameters.PushBack((uint8_t) (((uint64_t)CEC_VENDOR_LG >> 16) & 0xFF));
 111   response.parameters.PushBack((uint8_t) (((uint64_t)CEC_VENDOR_LG >> 8) & 0xFF));
 112   response.parameters.PushBack((uint8_t) ((uint64_t)CEC_VENDOR_LG & 0xFF));
 113
 114   m_busDevice->GetProcessor()->Transmit(response);
 115   return true;
 116 }
 117
 118 bool CSLCommandHandler::HandleGiveDeviceVendorId(const cec_command &command)
 119 {
 120   /* imitate LG devices */
 121   CCECBusDevice *device = GetDevice(command.destination);
 122   if (device)
 123     device->SetVendorId(CEC_VENDOR_LG);
 124
 125   return CCECCommandHandler::HandleGiveDeviceVendorId(command);
 126 }
 127
 128 bool CSLCommandHandler::HandleCommand(const cec_command &command)
 129 {
 130   bool bHandled(false);
 131   if (m_busDevice->MyLogicalAddressContains(command.destination) ||
 132       command.destination == CECDEVICE_BROADCAST)
 133   {
 134     switch(command.opcode)
 135     {
 136     case CEC_OPCODE_VENDOR_COMMAND:
 137       bHandled = HandleVendorCommand(command);
 138       break;
 139     case CEC_OPCODE_GIVE_DECK_STATUS:
 140       {
 141         if (command.parameters.size == 1)
 142         {
 143           if (command.parameters[0] == CEC_STATUS_REQUEST_ONCE ||
 144               command.parameters[0] == CEC_STATUS_REQUEST_ON)
 145             TransmitDeckStatus(command.initiator);
 146           else
 147             CCECCommandHandler::HandleCommand(command);
 148         }
 149         bHandled = true;
 150       }
 151       break;
 152     case CEC_OPCODE_FEATURE_ABORT:
 153       {
 154         if (!m_bSkipNextVendorId)
 155         {
 156           m_bSkipNextVendorId = true;
 157           TransmitLGVendorId(m_busDevice->GetProcessor()->GetLogicalAddresses().primary, CECDEVICE_BROADCAST);
 158         }
 159         m_bSLEnabled = false;
 160       }
 161       bHandled = true;
 162     default:
 163       break;
 164     }
 165   }
 166
 167   if (!bHandled)
 168     bHandled = CCECCommandHandler::HandleCommand(command);
 169
 170   return bHandled;
 171 }
 172
 173 void CSLCommandHandler::HandlePoll(const cec_logical_address iInitiator, const cec_logical_address iDestination)
 174 {
 175   CCECCommandHandler::HandlePoll(iInitiator, iDestination);
 176   m_bAwaitingReceiveFailed = true;
 177 }
 178
 179 bool CSLCommandHandler::HandleReceiveFailed(void)
 180 {
 181   if (m_bAwaitingReceiveFailed)
 182   {
 183     m_bAwaitingReceiveFailed = false;
 184     return false;
 185   }
 186
 187   return true;
 188 }
 189
 190 bool CSLCommandHandler::InitHandler(void)
 191 {
 192   if (m_busDevice->GetLogicalAddress() != CECDEVICE_TV)
 193     return true;
 194
 195   if (m_bSLEnabled)
 196     return true;
 197   m_bSLEnabled = true;
 198
 199   CCECBusDevice *primary = m_busDevice->GetProcessor()->m_busDevices[m_busDevice->GetProcessor()->GetLogicalAddresses().primary];
 200   primary->SetVendorId(CEC_VENDOR_LG);
 201   primary->TransmitVendorID(CECDEVICE_TV);
 202   primary->TransmitPhysicalAddress();
 203
 204   cec_command command;
 205   cec_command::Format(command, m_busDevice->GetProcessor()->GetLogicalAddresses().primary, CECDEVICE_TV, CEC_OPCODE_GIVE_DEVICE_VENDOR_ID);
 206   m_busDevice->GetProcessor()->Transmit(command);
 207
 208   /* LG TVs don't always reply to CEC version requests, so just set it to 1.3a */
 209   m_busDevice->GetProcessor()->m_busDevices[CECDEVICE_TV]->SetCecVersion(CEC_VERSION_1_3A);
 210
 211   /* LG TVs only route keypresses when the deck status is set to 0x20 */
 212   cec_logical_addresses addr = m_busDevice->GetProcessor()->GetLogicalAddresses();
 213   for (uint8_t iPtr = 0; iPtr < 15; iPtr++)
 214   {
 215     CCECBusDevice *device = m_busDevice->GetProcessor()->m_busDevices[iPtr];
 216
 217     /* increase the transmit timeout because the tv is keeping the bus busy at times */
 218     device->SetTransmitTimeout(3000);
 219     if (addr[iPtr])
 220     {
 221       if (device && (device->GetType() == CEC_DEVICE_TYPE_PLAYBACK_DEVICE ||
 222                      device->GetType() == CEC_DEVICE_TYPE_RECORDING_DEVICE))
 223       {
 224         ((CCECPlaybackDevice *)device)->SetDeckStatus(CEC_DECK_INFO_OTHER_STATUS_LG);
 225         TransmitDeckStatus(CECDEVICE_TV);
 226       }
 227     }
 228   }
 229   return true;
 230 }