cec: send the physical address only once. keep a write lock when polling devices

[deb_libcec.git] / src / lib / implementations / SLCommandHandler.cpp

/*
 * This file is part of the libCEC(R) library.
 *
 * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
 * libCEC(R) is an original work, containing original code.
 *
 * libCEC(R) is a trademark of Pulse-Eight Limited.
 *
 * This program is dual-licensed; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *
 * Alternatively, you can license this library under a commercial license,
 * please contact Pulse-Eight Licensing for more information.
 *
 * For more information contact:
 * Pulse-Eight Licensing       <license@pulse-eight.com>
 *     http://www.pulse-eight.com/
 *     http://www.pulse-eight.net/
 */

#include "SLCommandHandler.h"
#include "../devices/CECBusDevice.h"
#include "../devices/CECPlaybackDevice.h"
#include "../CECProcessor.h"

using namespace CEC;

#define SL_COMMAND_UNKNOWN_01        0x01
#define SL_COMMAND_UNKNOWN_02        0x02
#define SL_COMMAND_UNKNOWN_03        0x05

#define SL_COMMAND_REQUEST_VENDOR_ID 0xa0
#define SL_COMMAND_CONNECT_REQUEST   0x04
#define SL_COMMAND_CONNECT_ACCEPT    0x05

CSLCommandHandler::CSLCommandHandler(CCECBusDevice *busDevice) :
    CCECCommandHandler(busDevice),
    m_bAwaitingReceiveFailed(false)
{
}

bool CSLCommandHandler::HandleVendorCommand(const cec_command &command)
{
  if (command.parameters.size == 1 &&
      command.parameters[0] == SL_COMMAND_UNKNOWN_01)
  {
    /* enable SL */
    cec_command response;
    cec_command::Format(response, command.destination, command.initiator, CEC_OPCODE_VENDOR_COMMAND, m_busDevice->GetTransmitTimeout());
    response.PushBack(SL_COMMAND_UNKNOWN_02);
    response.PushBack(SL_COMMAND_UNKNOWN_03);

    m_busDevice->GetProcessor()->Transmit(response);
    TransmitLGVendorId(command.destination, command.initiator);
    return true;
  }
  else if (command.parameters.size == 2 &&
      command.parameters[0] == SL_COMMAND_CONNECT_REQUEST)
  {
    /* enable SL */
    cec_command response;
    cec_command::Format(response, command.destination, command.initiator, CEC_OPCODE_VENDOR_COMMAND, m_busDevice->GetTransmitTimeout());
    response.PushBack(SL_COMMAND_CONNECT_ACCEPT);
    response.PushBack(command.parameters[1]);
    m_busDevice->GetProcessor()->Transmit(response);

    /* set deck status for the playback device */
    CCECBusDevice *primary = m_busDevice->GetProcessor()->m_busDevices[m_busDevice->GetProcessor()->GetLogicalAddresses().primary];
    if (primary->GetType() == CEC_DEVICE_TYPE_PLAYBACK_DEVICE || primary->GetType() == CEC_DEVICE_TYPE_RECORDING_DEVICE)
    {
      ((CCECPlaybackDevice *)primary)->SetDeckStatus(CEC_DECK_INFO_OTHER_STATUS_LG);
      ((CCECPlaybackDevice *)primary)->TransmitDeckStatus(command.initiator);
    }
    return true;
  }
  else if (command.parameters.size == 1 &&
      command.parameters[0] == SL_COMMAND_REQUEST_VENDOR_ID)
  {
    TransmitLGVendorId(command.destination, command.initiator);
    return true;
  }

  return false;
}

bool CSLCommandHandler::TransmitLGVendorId(const cec_logical_address iInitiator, const cec_logical_address iDestination)
{
  cec_command response;
  cec_command::Format(response, iInitiator, iDestination, CEC_OPCODE_VENDOR_COMMAND, m_busDevice->GetTransmitTimeout());
  response.parameters.PushBack((uint8_t) (((uint64_t)CEC_VENDOR_LG >> 16) & 0xFF));
  response.parameters.PushBack((uint8_t) (((uint64_t)CEC_VENDOR_LG >> 8) & 0xFF));
  response.parameters.PushBack((uint8_t) ((uint64_t)CEC_VENDOR_LG & 0xFF));

  return m_busDevice->GetProcessor()->Transmit(response);
}

bool CSLCommandHandler::HandleGiveDeviceVendorId(const cec_command &command)
{
  /* imitate LG devices */
  CCECBusDevice *device = GetDevice(command.destination);
  if (device)
    device->SetVendorId(CEC_VENDOR_LG);

  return CCECCommandHandler::HandleGiveDeviceVendorId(command);
}

bool CSLCommandHandler::HandleCommand(const cec_command &command)
{
  bool bHandled(false);
  if (m_busDevice->MyLogicalAddressContains(command.destination))
  {
    switch(command.opcode)
    {
    case CEC_OPCODE_VENDOR_COMMAND:
      bHandled = HandleVendorCommand(command);
      break;
    case CEC_OPCODE_DEVICE_VENDOR_ID:
      {
        if (command.initiator == m_busDevice->GetLogicalAddress())
        {
          TransmitLGVendorId(m_busDevice->GetProcessor()->GetLogicalAddresses().primary, command.initiator);
          bHandled = true;
        }
      }
      break;
    default:
      break;
    }
  }

  if (!bHandled)
    bHandled = CCECCommandHandler::HandleCommand(command);

  return bHandled;
}

void CSLCommandHandler::HandlePoll(const cec_logical_address iInitiator, const cec_logical_address iDestination)
{
  CCECCommandHandler::HandlePoll(iInitiator, iDestination);
  m_bAwaitingReceiveFailed = true;
}

bool CSLCommandHandler::HandleReceiveFailed(void)
{
  if (m_bAwaitingReceiveFailed)
  {
    m_bAwaitingReceiveFailed = false;
    return false;
  }

  return true;
}

bool CSLCommandHandler::InitHandler(void)
{
  if (m_busDevice->GetLogicalAddress() != CECDEVICE_TV)
    return true;

  /* LG TVs don't always reply to CEC version requests, so just set it to 1.3a */
  m_busDevice->GetProcessor()->m_busDevices[CECDEVICE_TV]->SetCecVersion(CEC_VERSION_1_3A);

  /* LG TVs only route keypresses when the deck status is set to 0x20 */
  cec_logical_addresses addr = m_busDevice->GetProcessor()->GetLogicalAddresses();
  for (uint8_t iPtr = 0; iPtr < 15; iPtr++)
  {
    CCECBusDevice *device = m_busDevice->GetProcessor()->m_busDevices[iPtr];

    /* increase the transmit timeout because the tv is keeping the bus busy at times */
    device->SetTransmitTimeout(3000);
    if (addr[iPtr])
    {
      if (device && (device->GetType() == CEC_DEVICE_TYPE_PLAYBACK_DEVICE ||
                     device->GetType() == CEC_DEVICE_TYPE_RECORDING_DEVICE))
      {
        ((CCECPlaybackDevice *)device)->SetDeckStatus(CEC_DECK_INFO_OTHER_STATUS_LG);
        ((CCECPlaybackDevice *)device)->TransmitDeckStatus(CECDEVICE_TV);
      }
    }
  }
  return true;
}