[deb_libcec.git] / src / lib / AdapterCommunication.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 "AdapterCommunication.h"

#include "CECProcessor.h"
#include "platform/serialport/serialport.h"

using namespace std;
using namespace CEC;
using namespace PLATFORM;

CCECAdapterMessage::CCECAdapterMessage(const cec_command &command)
{
  clear();

  //set ack polarity to high when transmitting to the broadcast address
  //set ack polarity low when transmitting to any other address
  push_back(MSGSTART);
  push_escaped(MSGCODE_TRANSMIT_ACK_POLARITY);
  if (command.destination == CECDEVICE_BROADCAST)
    push_escaped(CEC_TRUE);
  else
    push_escaped(CEC_FALSE);
  push_back(MSGEND);

  // add source and destination
  push_back(MSGSTART);
  push_escaped(command.opcode_set == 0 ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
  push_back(((uint8_t)command.initiator << 4) + (uint8_t)command.destination);
  push_back(MSGEND);

  // add opcode
  if (command.opcode_set == 1)
  {
    push_back(MSGSTART);
    push_escaped(command.parameters.IsEmpty() ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
    push_back((uint8_t) command.opcode);
    push_back(MSGEND);

    // add parameters
    for (int8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
    {
      push_back(MSGSTART);

      if (iPtr == command.parameters.size - 1)
        push_escaped( MSGCODE_TRANSMIT_EOM);
      else
        push_escaped(MSGCODE_TRANSMIT);

      push_escaped(command.parameters[iPtr]);

      push_back(MSGEND);
    }
  }

  // set timeout
  transmit_timeout = command.transmit_timeout;
}

CCECAdapterMessage &CCECAdapterMessage::operator =(const CCECAdapterMessage &msg)
{
  packet = msg.packet;
  state  = msg.state;
  return *this;
}

CStdString CCECAdapterMessage::MessageCodeAsString(void) const
{
  CStdString strMsg;
  switch (message())
  {
  case MSGCODE_NOTHING:
    strMsg = "NOTHING";
    break;
  case MSGCODE_PING:
    strMsg = "PING";
    break;
  case MSGCODE_TIMEOUT_ERROR:
    strMsg = "TIMEOUT";
    break;
  case MSGCODE_HIGH_ERROR:
    strMsg = "HIGH_ERROR";
    break;
  case MSGCODE_LOW_ERROR:
    strMsg = "LOW_ERROR";
    break;
  case MSGCODE_FRAME_START:
    strMsg = "FRAME_START";
    break;
  case MSGCODE_FRAME_DATA:
    strMsg = "FRAME_DATA";
    break;
  case MSGCODE_RECEIVE_FAILED:
    strMsg = "RECEIVE_FAILED";
    break;
  case MSGCODE_COMMAND_ACCEPTED:
    strMsg = "COMMAND_ACCEPTED";
    break;
  case MSGCODE_COMMAND_REJECTED:
    strMsg = "COMMAND_REJECTED";
    break;
  case MSGCODE_SET_ACK_MASK:
    strMsg = "SET_ACK_MASK";
    break;
  case MSGCODE_TRANSMIT:
    strMsg = "TRANSMIT";
    break;
  case MSGCODE_TRANSMIT_EOM:
    strMsg = "TRANSMIT_EOM";
    break;
  case MSGCODE_TRANSMIT_IDLETIME:
    strMsg = "TRANSMIT_IDLETIME";
    break;
  case MSGCODE_TRANSMIT_ACK_POLARITY:
    strMsg = "TRANSMIT_ACK_POLARITY";
    break;
  case MSGCODE_TRANSMIT_LINE_TIMEOUT:
    strMsg = "TRANSMIT_LINE_TIMEOUT";
    break;
  case MSGCODE_TRANSMIT_SUCCEEDED:
    strMsg = "TRANSMIT_SUCCEEDED";
    break;
  case MSGCODE_TRANSMIT_FAILED_LINE:
    strMsg = "TRANSMIT_FAILED_LINE";
    break;
  case MSGCODE_TRANSMIT_FAILED_ACK:
    strMsg = "TRANSMIT_FAILED_ACK";
    break;
  case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
    strMsg = "TRANSMIT_FAILED_TIMEOUT_DATA";
    break;
  case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
    strMsg = "TRANSMIT_FAILED_TIMEOUT_LINE";
    break;
  case MSGCODE_FIRMWARE_VERSION:
    strMsg = "FIRMWARE_VERSION";
    break;
  case MSGCODE_START_BOOTLOADER:
    strMsg = "START_BOOTLOADER";
    break;
  case MSGCODE_FRAME_EOM:
    strMsg = "FRAME_EOM";
    break;
  case MSGCODE_FRAME_ACK:
    strMsg = "FRAME_ACK";
    break;
  }

  return strMsg;
}

CStdString CCECAdapterMessage::ToString(void) const
{
  CStdString strMsg;
  if (size() == 0)
  {
    strMsg = "empty message";
  }
  else
  {
    strMsg = MessageCodeAsString();

    switch (message())
    {
    case MSGCODE_TIMEOUT_ERROR:
    case MSGCODE_HIGH_ERROR:
    case MSGCODE_LOW_ERROR:
      {
        uint32_t iLine = (size() >= 3) ? (at(1) << 8) | at(2) : 0;
        uint32_t iTime = (size() >= 7) ? (at(3) << 24) | (at(4) << 16) | (at(5) << 8) | at(6) : 0;
        strMsg.AppendFormat(" line:%u", iLine);
        strMsg.AppendFormat(" time:%u", iTime);
      }
      break;
    case MSGCODE_FRAME_START:
      if (size() >= 2)
        strMsg.AppendFormat(" initiator:%1x destination:%1x ack:%s %s", initiator(), destination(), ack() ? "high" : "low", eom() ? "eom" : "");
      break;
    case MSGCODE_FRAME_DATA:
      if (size() >= 2)
        strMsg.AppendFormat(" %02x %s", at(1), eom() ? "eom" : "");
      break;
    default:
      break;
    }
  }

  return strMsg;
}

bool CCECAdapterMessage::is_error(void) const
{
  cec_adapter_messagecode code = message();
  return (code == MSGCODE_HIGH_ERROR ||
    code == MSGCODE_LOW_ERROR ||
    code == MSGCODE_RECEIVE_FAILED ||
    code == MSGCODE_COMMAND_REJECTED ||
    code == MSGCODE_TRANSMIT_LINE_TIMEOUT ||
    code == MSGCODE_TRANSMIT_FAILED_LINE ||
    code == MSGCODE_TRANSMIT_FAILED_ACK ||
    code == MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA ||
    code == MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE);
}

void CCECAdapterMessage::push_escaped(uint8_t byte)
{
  if (byte >= MSGESC)
  {
    push_back(MSGESC);
    push_back(byte - ESCOFFSET);
  }
  else
    push_back(byte);
}

CAdapterCommunication::CAdapterCommunication(CCECProcessor *processor) :
    m_port(NULL),
    m_processor(processor),
    m_iLineTimeout(0)
{
  m_port = new PLATFORM::CSerialPort;
}

CAdapterCommunication::~CAdapterCommunication(void)
{
  Close();

  if (m_port)
  {
    delete m_port;
    m_port = NULL;
  }
}

bool CAdapterCommunication::Open(const char *strPort, uint16_t iBaudRate /* = 38400 */, uint32_t iTimeoutMs /* = 10000 */)
{
  uint64_t iNow = GetTimeMs();
  uint64_t iTimeout = iNow + iTimeoutMs;

  CLockObject lock(m_mutex);

  if (!m_port)
  {
    m_processor->AddLog(CEC_LOG_ERROR, "port is NULL");
    return false;
  }

  if (IsOpen())
  {
    m_processor->AddLog(CEC_LOG_ERROR, "port is already open");
    return true;
  }

  CStdString strError;
  bool bConnected(false);
  while (!bConnected && iNow < iTimeout)
  {
    if ((bConnected = m_port->Open(strPort, iBaudRate)) == false)
    {
      strError.Format("error opening serial port '%s': %s", strPort, m_port->GetError().c_str());
      Sleep(250);
      iNow = GetTimeMs();
    }
  }

  if (!bConnected)
  {
    m_processor->AddLog(CEC_LOG_ERROR, strError);
    return false;
  }

  m_processor->AddLog(CEC_LOG_DEBUG, "connection opened");

  //clear any input bytes
  uint8_t buff[1];
  while (m_port->Read(buff, 1, 5) == 1) {}

  if (CreateThread())
  {
    m_startCondition.Wait(m_mutex);
    m_processor->AddLog(CEC_LOG_DEBUG, "communication thread started");
    return true;
  }
  else
  {
    m_processor->AddLog(CEC_LOG_DEBUG, "could not create a communication thread");
  }

  return false;
}

void CAdapterCommunication::Close(void)
{
  CLockObject lock(m_mutex);
  m_startCondition.Broadcast();
  m_rcvCondition.Broadcast();
  StopThread();
}

void *CAdapterCommunication::Process(void)
{
  {
    CLockObject lock(m_mutex);
    m_startCondition.Signal();
  }

  while (!IsStopped())
  {
    ReadFromDevice(50);
    Sleep(5);
    WriteNextCommand();
  }

  CCECAdapterMessage *msg;
  if (m_outBuffer.Pop(msg))
    msg->condition.Broadcast();

  return NULL;
}

bool CAdapterCommunication::ReadFromDevice(uint32_t iTimeout)
{
  int32_t iBytesRead;
  uint8_t buff[1024];
  if (!m_port)
    return false;

  iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout);
  if (iBytesRead < 0 || iBytesRead > 256)
  {
    CStdString strError;
    strError.Format("error reading from serial port: %s", m_port->GetError().c_str());
    m_processor->AddLog(CEC_LOG_ERROR, strError);
    return false;
  }
  else if (iBytesRead > 0)
    AddData(buff, (uint8_t) iBytesRead);

  return iBytesRead > 0;
}

void CAdapterCommunication::AddData(uint8_t *data, uint8_t iLen)
{
  CLockObject lock(m_mutex);
  for (uint8_t iPtr = 0; iPtr < iLen; iPtr++)
    m_inBuffer.Push(data[iPtr]);

  m_rcvCondition.Signal();
}

void CAdapterCommunication::WriteNextCommand(void)
{
  CCECAdapterMessage *msg;
  if (m_outBuffer.Pop(msg))
    SendMessageToAdapter(msg);
}

void CAdapterCommunication::SendMessageToAdapter(CCECAdapterMessage *msg)
{
  CLockObject lock(msg->mutex);
  if (m_port->Write(msg->packet.data, msg->size()) != (int32_t) msg->size())
  {
    CStdString strError;
    strError.Format("error writing to serial port: %s", m_port->GetError().c_str());
    m_processor->AddLog(CEC_LOG_ERROR, strError);
    msg->state = ADAPTER_MESSAGE_STATE_ERROR;
  }
  else
  {
    m_processor->AddLog(CEC_LOG_DEBUG, "command sent");
    msg->state = ADAPTER_MESSAGE_STATE_SENT;
  }
  msg->condition.Signal();
}

bool CAdapterCommunication::Write(CCECAdapterMessage *data)
{
  data->state = ADAPTER_MESSAGE_STATE_WAITING;
  m_outBuffer.Push(data);
  return true;
}

bool CAdapterCommunication::Read(CCECAdapterMessage &msg, uint32_t iTimeout)
{
  CLockObject lock(m_mutex);

  msg.clear();
  uint64_t iNow = GetTimeMs();
  uint64_t iTarget = iNow + iTimeout;
  bool bGotFullMessage(false);
  bool bNextIsEscaped(false);
  bool bGotStart(false);

  while(!bGotFullMessage && iNow < iTarget)
  {
    uint8_t buf = 0;
    if (!m_inBuffer.Pop(buf))
    {
      if (!m_rcvCondition.Wait(m_mutex, (uint32_t) (iTarget - iNow)))
        return false;
    }

    if (!bGotStart)
    {
      if (buf == MSGSTART)
        bGotStart = true;
      continue;
    }
    else if (buf == MSGSTART) //we found a msgstart before msgend, this is not right, remove
    {
      if (msg.size() > 0)
        m_processor->AddLog(CEC_LOG_WARNING, "received MSGSTART before MSGEND, removing previous buffer contents");
      msg.clear();
      bGotStart = true;
    }

    if (buf == MSGEND)
    {
      bGotFullMessage = true;
    }
    else if (bNextIsEscaped)
    {
      msg.push_back(buf + (uint8_t)ESCOFFSET);
      bNextIsEscaped = false;
    }
    else if (buf == MSGESC)
      bNextIsEscaped = true;
    else
      msg.push_back(buf);
  }

  if (bGotFullMessage)
    msg.state = ADAPTER_MESSAGE_STATE_RECEIVED;

  return bGotFullMessage;
}

std::string CAdapterCommunication::GetError(void) const
{
  return m_port->GetError();
}

bool CAdapterCommunication::StartBootloader(void)
{
  bool bReturn(false);
  if (!IsRunning())
    return bReturn;

  m_processor->AddLog(CEC_LOG_DEBUG, "starting the bootloader");
  CCECAdapterMessage *output = new CCECAdapterMessage;

  output->push_back(MSGSTART);
  output->push_escaped(MSGCODE_START_BOOTLOADER);
  output->push_back(MSGEND);

  CLockObject lock(output->mutex);
  if (Write(output))
    output->condition.Wait(output->mutex);
  bReturn = output->state == ADAPTER_MESSAGE_STATE_SENT;
  delete output;

  return bReturn;
}

bool CAdapterCommunication::PingAdapter(void)
{
  bool bReturn(false);
  if (!IsRunning())
    return bReturn;

  m_processor->AddLog(CEC_LOG_DEBUG, "sending ping");
  CCECAdapterMessage *output = new CCECAdapterMessage;

  output->push_back(MSGSTART);
  output->push_escaped(MSGCODE_PING);
  output->push_back(MSGEND);

  CLockObject lock(output->mutex);
  if (Write(output))
    output->condition.Wait(output->mutex);
  bReturn = output->state == ADAPTER_MESSAGE_STATE_SENT;
  delete output;

  return bReturn;
}

bool CAdapterCommunication::SetLineTimeout(uint8_t iTimeout)
{
  bool bReturn(m_iLineTimeout != iTimeout);

  if (!bReturn)
  {
    CCECAdapterMessage *output = new CCECAdapterMessage;

    output->push_back(MSGSTART);
    output->push_escaped(MSGCODE_TRANSMIT_IDLETIME);
    output->push_escaped(iTimeout);
    output->push_back(MSGEND);

    if ((bReturn = Write(output)) == false)
      m_processor->AddLog(CEC_LOG_ERROR, "could not set the idletime");
    delete output;
  }

  return bReturn;
}

bool CAdapterCommunication::IsOpen(void)
{
  return !IsStopped() && m_port->IsOpen() && IsRunning();
}
Commit	Line	Data
	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 "AdapterCommunication.h"
	34
	35	#include "CECProcessor.h"
	36	#include "platform/serialport/serialport.h"
	37
	38	using namespace std;
	39	using namespace CEC;
	40	using namespace PLATFORM;
	41
	42	CCECAdapterMessage::CCECAdapterMessage(const cec_command &command)
	43	{
	44	clear();
	45
	46	//set ack polarity to high when transmitting to the broadcast address
	47	//set ack polarity low when transmitting to any other address
	48	push_back(MSGSTART);
	49	push_escaped(MSGCODE_TRANSMIT_ACK_POLARITY);
	50	if (command.destination == CECDEVICE_BROADCAST)
	51	push_escaped(CEC_TRUE);
	52	else
	53	push_escaped(CEC_FALSE);
	54	push_back(MSGEND);
	55
	56	// add source and destination
	57	push_back(MSGSTART);
	58	push_escaped(command.opcode_set == 0 ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
	59	push_back(((uint8_t)command.initiator << 4) + (uint8_t)command.destination);
	60	push_back(MSGEND);
	61
	62	// add opcode
	63	if (command.opcode_set == 1)
	64	{
	65	push_back(MSGSTART);
	66	push_escaped(command.parameters.IsEmpty() ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
	67	push_back((uint8_t) command.opcode);
	68	push_back(MSGEND);
	69
	70	// add parameters
	71	for (int8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
	72	{
	73	push_back(MSGSTART);
	74
	75	if (iPtr == command.parameters.size - 1)
	76	push_escaped( MSGCODE_TRANSMIT_EOM);
	77	else
	78	push_escaped(MSGCODE_TRANSMIT);
	79
	80	push_escaped(command.parameters[iPtr]);
	81
	82	push_back(MSGEND);
	83	}
	84	}
	85
	86	// set timeout
	87	transmit_timeout = command.transmit_timeout;
	88	}
	89
	90	CCECAdapterMessage &CCECAdapterMessage::operator =(const CCECAdapterMessage &msg)
	91	{
	92	packet = msg.packet;
	93	state = msg.state;
	94	return *this;
	95	}
	96
	97	CStdString CCECAdapterMessage::MessageCodeAsString(void) const
	98	{
	99	CStdString strMsg;
	100	switch (message())
	101	{
	102	case MSGCODE_NOTHING:
	103	strMsg = "NOTHING";
	104	break;
	105	case MSGCODE_PING:
	106	strMsg = "PING";
	107	break;
	108	case MSGCODE_TIMEOUT_ERROR:
	109	strMsg = "TIMEOUT";
	110	break;
	111	case MSGCODE_HIGH_ERROR:
	112	strMsg = "HIGH_ERROR";
	113	break;
	114	case MSGCODE_LOW_ERROR:
	115	strMsg = "LOW_ERROR";
	116	break;
	117	case MSGCODE_FRAME_START:
	118	strMsg = "FRAME_START";
	119	break;
	120	case MSGCODE_FRAME_DATA:
	121	strMsg = "FRAME_DATA";
	122	break;
	123	case MSGCODE_RECEIVE_FAILED:
	124	strMsg = "RECEIVE_FAILED";
	125	break;
	126	case MSGCODE_COMMAND_ACCEPTED:
	127	strMsg = "COMMAND_ACCEPTED";
	128	break;
	129	case MSGCODE_COMMAND_REJECTED:
	130	strMsg = "COMMAND_REJECTED";
	131	break;
	132	case MSGCODE_SET_ACK_MASK:
	133	strMsg = "SET_ACK_MASK";
	134	break;
	135	case MSGCODE_TRANSMIT:
	136	strMsg = "TRANSMIT";
	137	break;
	138	case MSGCODE_TRANSMIT_EOM:
	139	strMsg = "TRANSMIT_EOM";
	140	break;
	141	case MSGCODE_TRANSMIT_IDLETIME:
	142	strMsg = "TRANSMIT_IDLETIME";
	143	break;
	144	case MSGCODE_TRANSMIT_ACK_POLARITY:
	145	strMsg = "TRANSMIT_ACK_POLARITY";
	146	break;
	147	case MSGCODE_TRANSMIT_LINE_TIMEOUT:
	148	strMsg = "TRANSMIT_LINE_TIMEOUT";
	149	break;
	150	case MSGCODE_TRANSMIT_SUCCEEDED:
	151	strMsg = "TRANSMIT_SUCCEEDED";
	152	break;
	153	case MSGCODE_TRANSMIT_FAILED_LINE:
	154	strMsg = "TRANSMIT_FAILED_LINE";
	155	break;
	156	case MSGCODE_TRANSMIT_FAILED_ACK:
	157	strMsg = "TRANSMIT_FAILED_ACK";
	158	break;
	159	case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
	160	strMsg = "TRANSMIT_FAILED_TIMEOUT_DATA";
	161	break;
	162	case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
	163	strMsg = "TRANSMIT_FAILED_TIMEOUT_LINE";
	164	break;
	165	case MSGCODE_FIRMWARE_VERSION:
	166	strMsg = "FIRMWARE_VERSION";
	167	break;
	168	case MSGCODE_START_BOOTLOADER:
	169	strMsg = "START_BOOTLOADER";
	170	break;
	171	case MSGCODE_FRAME_EOM:
	172	strMsg = "FRAME_EOM";
	173	break;
	174	case MSGCODE_FRAME_ACK:
	175	strMsg = "FRAME_ACK";
	176	break;
	177	}
	178
	179	return strMsg;
	180	}
	181
	182	CStdString CCECAdapterMessage::ToString(void) const
	183	{
	184	CStdString strMsg;
	185	if (size() == 0)
	186	{
	187	strMsg = "empty message";
	188	}
	189	else
	190	{
	191	strMsg = MessageCodeAsString();
	192
	193	switch (message())
	194	{
	195	case MSGCODE_TIMEOUT_ERROR:
	196	case MSGCODE_HIGH_ERROR:
	197	case MSGCODE_LOW_ERROR:
	198	{
	199	uint32_t iLine = (size() >= 3) ? (at(1) << 8) \| at(2) : 0;
	200	uint32_t iTime = (size() >= 7) ? (at(3) << 24) \| (at(4) << 16) \| (at(5) << 8) \| at(6) : 0;
	201	strMsg.AppendFormat(" line:%u", iLine);
	202	strMsg.AppendFormat(" time:%u", iTime);
	203	}
	204	break;
	205	case MSGCODE_FRAME_START:
	206	if (size() >= 2)
	207	strMsg.AppendFormat(" initiator:%1x destination:%1x ack:%s %s", initiator(), destination(), ack() ? "high" : "low", eom() ? "eom" : "");
	208	break;
	209	case MSGCODE_FRAME_DATA:
	210	if (size() >= 2)
	211	strMsg.AppendFormat(" %02x %s", at(1), eom() ? "eom" : "");
	212	break;
	213	default:
	214	break;
	215	}
	216	}
	217
	218	return strMsg;
	219	}
	220
	221	bool CCECAdapterMessage::is_error(void) const
	222	{
	223	cec_adapter_messagecode code = message();
	224	return (code == MSGCODE_HIGH_ERROR \|\|
	225	code == MSGCODE_LOW_ERROR \|\|
	226	code == MSGCODE_RECEIVE_FAILED \|\|
	227	code == MSGCODE_COMMAND_REJECTED \|\|
	228	code == MSGCODE_TRANSMIT_LINE_TIMEOUT \|\|
	229	code == MSGCODE_TRANSMIT_FAILED_LINE \|\|
	230	code == MSGCODE_TRANSMIT_FAILED_ACK \|\|
	231	code == MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA \|\|
	232	code == MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE);
	233	}
	234
	235	void CCECAdapterMessage::push_escaped(uint8_t byte)
	236	{
	237	if (byte >= MSGESC)
	238	{
	239	push_back(MSGESC);
	240	push_back(byte - ESCOFFSET);
	241	}
	242	else
	243	push_back(byte);
	244	}
	245
	246	CAdapterCommunication::CAdapterCommunication(CCECProcessor *processor) :
	247	m_port(NULL),
	248	m_processor(processor),
	249	m_iLineTimeout(0)
	250	{
	251	m_port = new PLATFORM::CSerialPort;
	252	}
	253
	254	CAdapterCommunication::~CAdapterCommunication(void)
	255	{
	256	Close();
	257
	258	if (m_port)
	259	{
	260	delete m_port;
	261	m_port = NULL;
	262	}
	263	}
	264
	265	bool CAdapterCommunication::Open(const char strPort, uint16_t iBaudRate / = 38400 /, uint32_t iTimeoutMs / = 10000 */)
	266	{
	267	uint64_t iNow = GetTimeMs();
	268	uint64_t iTimeout = iNow + iTimeoutMs;
	269
	270	CLockObject lock(m_mutex);
	271
	272	if (!m_port)
	273	{
	274	m_processor->AddLog(CEC_LOG_ERROR, "port is NULL");
	275	return false;
	276	}
	277
	278	if (IsOpen())
	279	{
	280	m_processor->AddLog(CEC_LOG_ERROR, "port is already open");
	281	return true;
	282	}
	283
	284	CStdString strError;
	285	bool bConnected(false);
	286	while (!bConnected && iNow < iTimeout)
	287	{
	288	if ((bConnected = m_port->Open(strPort, iBaudRate)) == false)
	289	{
	290	strError.Format("error opening serial port '%s': %s", strPort, m_port->GetError().c_str());
	291	Sleep(250);
	292	iNow = GetTimeMs();
	293	}
	294	}
	295
	296	if (!bConnected)
	297	{
	298	m_processor->AddLog(CEC_LOG_ERROR, strError);
	299	return false;
	300	}
	301
	302	m_processor->AddLog(CEC_LOG_DEBUG, "connection opened");
	303
	304	//clear any input bytes
	305	uint8_t buff[1];
	306	while (m_port->Read(buff, 1, 5) == 1) {}
	307
	308	if (CreateThread())
	309	{
	310	m_startCondition.Wait(m_mutex);
	311	m_processor->AddLog(CEC_LOG_DEBUG, "communication thread started");
	312	return true;
	313	}
	314	else
	315	{
	316	m_processor->AddLog(CEC_LOG_DEBUG, "could not create a communication thread");
	317	}
	318
	319	return false;
	320	}
	321
	322	void CAdapterCommunication::Close(void)
	323	{
	324	CLockObject lock(m_mutex);
	325	m_startCondition.Broadcast();
	326	m_rcvCondition.Broadcast();
	327	StopThread();
	328	}
	329
	330	void *CAdapterCommunication::Process(void)
	331	{
	332	{
	333	CLockObject lock(m_mutex);
	334	m_startCondition.Signal();
	335	}
	336
	337	while (!IsStopped())
	338	{
	339	ReadFromDevice(50);
	340	Sleep(5);
	341	WriteNextCommand();
	342	}
	343
	344	CCECAdapterMessage *msg;
	345	if (m_outBuffer.Pop(msg))
	346	msg->condition.Broadcast();
	347
	348	return NULL;
	349	}
	350
	351	bool CAdapterCommunication::ReadFromDevice(uint32_t iTimeout)
	352	{
	353	int32_t iBytesRead;
	354	uint8_t buff[1024];
	355	if (!m_port)
	356	return false;
	357
	358	iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout);
	359	if (iBytesRead < 0 \|\| iBytesRead > 256)
	360	{
	361	CStdString strError;
	362	strError.Format("error reading from serial port: %s", m_port->GetError().c_str());
	363	m_processor->AddLog(CEC_LOG_ERROR, strError);
	364	return false;
	365	}
	366	else if (iBytesRead > 0)
	367	AddData(buff, (uint8_t) iBytesRead);
	368
	369	return iBytesRead > 0;
	370	}
	371
	372	void CAdapterCommunication::AddData(uint8_t *data, uint8_t iLen)
	373	{
	374	CLockObject lock(m_mutex);
	375	for (uint8_t iPtr = 0; iPtr < iLen; iPtr++)
	376	m_inBuffer.Push(data[iPtr]);
	377
	378	m_rcvCondition.Signal();
	379	}
	380
	381	void CAdapterCommunication::WriteNextCommand(void)
	382	{
	383	CCECAdapterMessage *msg;
	384	if (m_outBuffer.Pop(msg))
	385	SendMessageToAdapter(msg);
	386	}
	387
	388	void CAdapterCommunication::SendMessageToAdapter(CCECAdapterMessage *msg)
	389	{
	390	CLockObject lock(msg->mutex);
	391	if (m_port->Write(msg->packet.data, msg->size()) != (int32_t) msg->size())
	392	{
	393	CStdString strError;
	394	strError.Format("error writing to serial port: %s", m_port->GetError().c_str());
	395	m_processor->AddLog(CEC_LOG_ERROR, strError);
	396	msg->state = ADAPTER_MESSAGE_STATE_ERROR;
	397	}
	398	else
	399	{
	400	m_processor->AddLog(CEC_LOG_DEBUG, "command sent");
	401	msg->state = ADAPTER_MESSAGE_STATE_SENT;
	402	}
	403	msg->condition.Signal();
	404	}
	405
	406	bool CAdapterCommunication::Write(CCECAdapterMessage *data)
	407	{
	408	data->state = ADAPTER_MESSAGE_STATE_WAITING;
	409	m_outBuffer.Push(data);
	410	return true;
	411	}
	412
	413	bool CAdapterCommunication::Read(CCECAdapterMessage &msg, uint32_t iTimeout)
	414	{
	415	CLockObject lock(m_mutex);
	416
	417	msg.clear();
	418	uint64_t iNow = GetTimeMs();
	419	uint64_t iTarget = iNow + iTimeout;
	420	bool bGotFullMessage(false);
	421	bool bNextIsEscaped(false);
	422	bool bGotStart(false);
	423
	424	while(!bGotFullMessage && iNow < iTarget)
	425	{
	426	uint8_t buf = 0;
	427	if (!m_inBuffer.Pop(buf))
	428	{
	429	if (!m_rcvCondition.Wait(m_mutex, (uint32_t) (iTarget - iNow)))
	430	return false;
	431	}
	432
	433	if (!bGotStart)
	434	{
	435	if (buf == MSGSTART)
	436	bGotStart = true;
	437	continue;
	438	}
	439	else if (buf == MSGSTART) //we found a msgstart before msgend, this is not right, remove
	440	{
	441	if (msg.size() > 0)
	442	m_processor->AddLog(CEC_LOG_WARNING, "received MSGSTART before MSGEND, removing previous buffer contents");
	443	msg.clear();
	444	bGotStart = true;
	445	}
	446
	447	if (buf == MSGEND)
	448	{
	449	bGotFullMessage = true;
	450	}
	451	else if (bNextIsEscaped)
	452	{
	453	msg.push_back(buf + (uint8_t)ESCOFFSET);
	454	bNextIsEscaped = false;
	455	}
	456	else if (buf == MSGESC)
	457	bNextIsEscaped = true;
	458	else
	459	msg.push_back(buf);
	460	}
	461
	462	if (bGotFullMessage)
	463	msg.state = ADAPTER_MESSAGE_STATE_RECEIVED;
	464
	465	return bGotFullMessage;
	466	}
	467
	468	std::string CAdapterCommunication::GetError(void) const
	469	{
	470	return m_port->GetError();
	471	}
	472
	473	bool CAdapterCommunication::StartBootloader(void)
	474	{
	475	bool bReturn(false);
	476	if (!IsRunning())
	477	return bReturn;
	478
	479	m_processor->AddLog(CEC_LOG_DEBUG, "starting the bootloader");
	480	CCECAdapterMessage *output = new CCECAdapterMessage;
	481
	482	output->push_back(MSGSTART);
	483	output->push_escaped(MSGCODE_START_BOOTLOADER);
	484	output->push_back(MSGEND);
	485
	486	CLockObject lock(output->mutex);
	487	if (Write(output))
	488	output->condition.Wait(output->mutex);
	489	bReturn = output->state == ADAPTER_MESSAGE_STATE_SENT;
	490	delete output;
	491
	492	return bReturn;
	493	}
	494
	495	bool CAdapterCommunication::PingAdapter(void)
	496	{
	497	bool bReturn(false);
	498	if (!IsRunning())
	499	return bReturn;
	500
	501	m_processor->AddLog(CEC_LOG_DEBUG, "sending ping");
	502	CCECAdapterMessage *output = new CCECAdapterMessage;
	503
	504	output->push_back(MSGSTART);
	505	output->push_escaped(MSGCODE_PING);
	506	output->push_back(MSGEND);
	507
	508	CLockObject lock(output->mutex);
	509	if (Write(output))
	510	output->condition.Wait(output->mutex);
	511	bReturn = output->state == ADAPTER_MESSAGE_STATE_SENT;
	512	delete output;
	513
	514	return bReturn;
	515	}
	516
	517	bool CAdapterCommunication::SetLineTimeout(uint8_t iTimeout)
	518	{
	519	bool bReturn(m_iLineTimeout != iTimeout);
	520
	521	if (!bReturn)
	522	{
	523	CCECAdapterMessage *output = new CCECAdapterMessage;
	524
	525	output->push_back(MSGSTART);
	526	output->push_escaped(MSGCODE_TRANSMIT_IDLETIME);
	527	output->push_escaped(iTimeout);
	528	output->push_back(MSGEND);
	529
	530	if ((bReturn = Write(output)) == false)
	531	m_processor->AddLog(CEC_LOG_ERROR, "could not set the idletime");
	532	delete output;
	533	}
	534
	535	return bReturn;
	536	}
	537
	538	bool CAdapterCommunication::IsOpen(void)
	539	{
	540	return !IsStopped() && m_port->IsOpen() && IsRunning();
	541	}