src/lib/implementations/VLCommandHandler.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 "VLCommandHandler.h"
  34 #include "../devices/CECBusDevice.h"
  35 #include "../CECProcessor.h"
  36 #include "../LibCEC.h"
  37
  38 #define VL_POWER_CHANGE 0x20
  39 #define VL_POWERED_UP   0x00
  40 #define VL_POWERED_DOWN 0x01
  41
  42 using namespace CEC;
  43 using namespace PLATFORM;
  44
  45 CVLCommandHandler::CVLCommandHandler(CCECBusDevice *busDevice) :
  46     CCECCommandHandler(busDevice),
  47     m_bActiveSourcePending(false),
  48     m_bPowerUpEventReceived(false)
  49 {
  50   m_vendorId = CEC_VENDOR_PANASONIC;
  51 }
  52
  53 bool CVLCommandHandler::InitHandler(void)
  54 {
  55   CCECBusDevice *primary = m_processor->GetPrimaryDevice();
  56   if (primary->GetType() == CEC_DEVICE_TYPE_RECORDING_DEVICE)
  57     return m_processor->ChangeDeviceType(CEC_DEVICE_TYPE_RECORDING_DEVICE, CEC_DEVICE_TYPE_PLAYBACK_DEVICE);
  58
  59   return CCECCommandHandler::InitHandler();
  60 }
  61
  62 bool CVLCommandHandler::HandleDeviceVendorCommandWithId(const cec_command &command)
  63 {
  64   if (command.initiator == CECDEVICE_TV &&
  65       command.destination == CECDEVICE_BROADCAST &&
  66       command.parameters.At(3) == VL_POWER_CHANGE)
  67   {
  68     if (command.parameters.At(4) == VL_POWERED_UP)
  69     {
  70       CLibCEC::AddLog(CEC_LOG_DEBUG, "TV powered up");
  71       {
  72         CLockObject lock(m_mutex);
  73         m_bPowerUpEventReceived = true;
  74       }
  75       m_processor->TransmitPendingActiveSourceCommands();
  76     }
  77     else if (command.parameters.At(4) == VL_POWERED_DOWN)
  78       CLibCEC::AddLog(CEC_LOG_DEBUG, "TV powered down");
  79     else if (command.parameters.At(4) == VL_POWERED_DOWN)
  80       CLibCEC::AddLog(CEC_LOG_DEBUG, "unknown vendor command");
  81
  82     return true;
  83   }
  84
  85   return CCECCommandHandler::HandleDeviceVendorCommandWithId(command);
  86 }
  87
  88 bool CVLCommandHandler::TransmitActiveSource(const cec_logical_address iInitiator, uint16_t iPhysicalAddress)
  89 {
  90   bool bPowerUpEventReceived(false);
  91
  92   {
  93     CLockObject lock(m_mutex);
  94     if (!m_bPowerUpEventReceived)
  95     {
  96       // just assume it's been sent when the tv is powered on
  97       cec_power_status powerStatus = m_processor->m_busDevices[CECDEVICE_TV]->GetPowerStatus();
  98       m_bPowerUpEventReceived = (powerStatus == CEC_POWER_STATUS_ON);
  99     }
 100     bPowerUpEventReceived = m_bPowerUpEventReceived;
 101   }
 102
 103   if (!bPowerUpEventReceived)
 104   {
 105     CLockObject lock(m_mutex);
 106     // wait until we received the event
 107     m_bActiveSourcePending = true;
 108     return true;
 109   }
 110   else
 111   {
 112     // transmit standard active source message
 113     return CCECCommandHandler::TransmitActiveSource(iInitiator, iPhysicalAddress);
 114   }
 115 }
 116
 117 bool CVLCommandHandler::TransmitPendingActiveSourceCommands(void)
 118 {
 119   bool bTransmitCommand(false);
 120   {
 121     CLockObject lock(m_mutex);
 122     bTransmitCommand = m_bActiveSourcePending;
 123     m_bActiveSourcePending = false;
 124   }
 125
 126   if (bTransmitCommand)
 127   {
 128     CLibCEC::AddLog(CEC_LOG_DEBUG, "transmitting delayed activate source command");
 129     return CCECCommandHandler::TransmitActiveSource(m_busDevice->GetLogicalAddress(), m_busDevice->GetPhysicalAddress(false, true));
 130   }
 131   return true;
 132 }