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