Method Transmit

src/libcec/CECProcessor.cpp:457–542

}

bool CCECProcessor::Transmit(const cec_command &data, bool bIsReply)
{
  cec_command transmitData(data);
  uint8_t iMaxTries(0);
  bool bRetry(true);
  uint8_t iTries(0);

  // get the current timeout setting
  uint8_t iLineTimeout(GetStandardLineTimeout());

  // reset the state of this message to 'unknown'
  cec_adapter_message_state adapterState = ADAPTER_MESSAGE_STATE_UNKNOWN;

  if (data.initiator == CECDEVICE_UNKNOWN && data.destination == CECDEVICE_UNKNOWN)
    return false;

  CLockObject lock(m_mutex);
  if (!m_communication)
    return false;

  if (!m_communication->SupportsSourceLogicalAddress(transmitData.initiator))
  {
    if (transmitData.initiator == CECDEVICE_UNREGISTERED && m_communication->SupportsSourceLogicalAddress(CECDEVICE_FREEUSE))
    {
      m_libcec->AddLog(CEC_LOG_DEBUG, "initiator '%s' is not supported by the CEC adapter. using '%s' instead", ToString(transmitData.initiator), ToString(CECDEVICE_FREEUSE));
      transmitData.initiator = CECDEVICE_FREEUSE;
    }
    else
    {
      m_libcec->AddLog(CEC_LOG_DEBUG, "initiator '%s' is not supported by the CEC adapter", ToString(transmitData.initiator));
      return false;
    }
  }

  LogOutput(transmitData);

  // find the initiator device
  CCECBusDevice *initiator = m_busDevices->At(transmitData.initiator);
  if (!initiator)
  {
    m_libcec->AddLog(CEC_LOG_WARNING, "invalid initiator");
    return false;
  }

  // find the destination device, if it's not the broadcast address
  if (transmitData.destination != CECDEVICE_BROADCAST)
  {
    // check if the device is marked as handled by libCEC
    CCECBusDevice *destination = m_busDevices->At(transmitData.destination);
    if (destination && destination->IsHandledByLibCEC())
    {
      // and reject the command if it's trying to send data to a device that is handled by libCEC
      m_libcec->AddLog(CEC_LOG_WARNING, "not sending data to myself!");
      return false;
    }
  }

  // wait until we finished allocating a new LA if it got lost if this is not a poll