[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 "LibCEC.h"
#include "platform/serialport.h"
#include "util/StdString.h"
#include "platform/timeutils.h"

using namespace std;
using namespace CEC;

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.empty() ? (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;
  strMsg = MessageCodeAsString();

  switch (message())
  {
  case MSGCODE_TIMEOUT_ERROR:
  case MSGCODE_HIGH_ERROR:
  case MSGCODE_LOW_ERROR:
    {
      int 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:%i", 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_TIMEOUT_ERROR ||
    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(int16_t byte)
{
  if (byte >= MSGESC && byte != MSGSTART)
  {
    push_back(MSGESC);
    push_back((uint8_t) (byte - ESCOFFSET));
  }
  else
    push_back((uint8_t) byte);
}

CAdapterCommunication::CAdapterCommunication(CLibCEC *controller) :
    m_port(NULL),
    m_controller(controller)
{
  m_port = new 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 */)
{
  CLockObject lock(&m_mutex);
  if (!m_port)
  {
    m_controller->AddLog(CEC_LOG_ERROR, "port is NULL");
    return false;
  }

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

  if (!m_port->Open(strPort, iBaudRate))
  {
    CStdString strError;
    strError.Format("error opening serial port '%s': %s", strPort, m_port->GetError().c_str());
    m_controller->AddLog(CEC_LOG_ERROR, strError);
    return false;
  }

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

  //clear any input bytes
  uint8_t buff[1024];
  m_port->Read(buff, sizeof(buff), 500);

  if (CreateThread())
  {
    m_startCondition.Wait(&m_mutex);
    m_controller->AddLog(CEC_LOG_DEBUG, "communication thread started");
    return true;
  }
  else
  {
    m_controller->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(500);
    Sleep(5);
    WriteNextCommand();
  }

  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_controller->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 (unsigned int iPtr = 0; iPtr < iLen; iPtr++)
    m_inBuffer.Push(data[iPtr]);

  m_rcvCondition.Signal();
}

void CAdapterCommunication::WriteNextCommand(void)
{
  CCECAdapterMessage *msg;
  if (m_outBuffer.Pop(msg))
  {
    CLockObject lock(&msg->mutex);
    if (m_port->Write(msg) != (int32_t) msg->size())
    {
      CStdString strError;
      strError.Format("error writing to serial port: %s", m_port->GetError().c_str());
      m_controller->AddLog(CEC_LOG_ERROR, strError);
      msg->state = ADAPTER_MESSAGE_STATE_ERROR;
    }
    else
    {
      m_controller->AddLog(CEC_LOG_DEBUG, "command sent");
      CCondition::Sleep((uint32_t) msg->size() * 24 /*data*/ + 5 /*start bit (4.5 ms)*/ + 10);
      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
    {
      m_controller->AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND");
      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_controller->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);

  if ((bReturn = Write(output)) == false)
    m_controller->AddLog(CEC_LOG_ERROR, "could not start the bootloader");

  delete output;

  return bReturn;
}

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

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

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

  if ((bReturn = Write(output)) == false)
    m_controller->AddLog(CEC_LOG_ERROR, "could not send ping command");

  // TODO check for pong
  delete output;

  return bReturn;
}

bool CAdapterCommunication::IsOpen(void) const
{
  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 "LibCEC.h"
	36	#include "platform/serialport.h"
	37	#include "util/StdString.h"
	38	#include "platform/timeutils.h"
	39
	40	using namespace std;
	41	using namespace CEC;
	42
	43	CCECAdapterMessage::CCECAdapterMessage(const cec_command &command)
	44	{
	45	clear();
	46
	47	//set ack polarity to high when transmitting to the broadcast address
	48	//set ack polarity low when transmitting to any other address
	49	push_back(MSGSTART);
	50	push_escaped(MSGCODE_TRANSMIT_ACK_POLARITY);
	51	if (command.destination == CECDEVICE_BROADCAST)
	52	push_escaped(CEC_TRUE);
	53	else
	54	push_escaped(CEC_FALSE);
	55	push_back(MSGEND);
	56
	57	// add source and destination
	58	push_back(MSGSTART);
	59	push_escaped(command.opcode_set == 0 ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
	60	push_back(((uint8_t)command.initiator << 4) + (uint8_t)command.destination);
	61	push_back(MSGEND);
	62
	63	// add opcode
	64	if (command.opcode_set == 1)
	65	{
	66	push_back(MSGSTART);
	67	push_escaped(command.parameters.empty() ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
	68	push_back((uint8_t) command.opcode);
	69	push_back(MSGEND);
	70
	71	// add parameters
	72	for (int8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
	73	{
	74	push_back(MSGSTART);
	75
	76	if (iPtr == command.parameters.size - 1)
	77	push_escaped( MSGCODE_TRANSMIT_EOM);
	78	else
	79	push_escaped(MSGCODE_TRANSMIT);
	80
	81	push_escaped(command.parameters[iPtr]);
	82
	83	push_back(MSGEND);
	84	}
	85	}
	86
	87	// set timeout
	88	transmit_timeout = command.transmit_timeout;
	89	}
	90
	91	CCECAdapterMessage &CCECAdapterMessage::operator =(const CCECAdapterMessage &msg)
	92	{
	93	packet = msg.packet;
	94	state = msg.state;
	95	return *this;
	96	}
	97
	98	CStdString CCECAdapterMessage::MessageCodeAsString(void) const
	99	{
	100	CStdString strMsg;
	101	switch (message())
	102	{
	103	case MSGCODE_NOTHING:
	104	strMsg = "NOTHING";
	105	break;
	106	case MSGCODE_PING:
	107	strMsg = "PING";
	108	break;
	109	case MSGCODE_TIMEOUT_ERROR:
	110	strMsg = "TIMEOUT";
	111	break;
	112	case MSGCODE_HIGH_ERROR:
	113	strMsg = "HIGH_ERROR";
	114	break;
	115	case MSGCODE_LOW_ERROR:
	116	strMsg = "LOW_ERROR";
	117	break;
	118	case MSGCODE_FRAME_START:
	119	strMsg = "FRAME_START";
	120	break;
	121	case MSGCODE_FRAME_DATA:
	122	strMsg = "FRAME_DATA";
	123	break;
	124	case MSGCODE_RECEIVE_FAILED:
	125	strMsg = "RECEIVE_FAILED";
	126	break;
	127	case MSGCODE_COMMAND_ACCEPTED:
	128	strMsg = "COMMAND_ACCEPTED";
	129	break;
	130	case MSGCODE_COMMAND_REJECTED:
	131	strMsg = "COMMAND_REJECTED";
	132	break;
	133	case MSGCODE_SET_ACK_MASK:
	134	strMsg = "SET_ACK_MASK";
	135	break;
	136	case MSGCODE_TRANSMIT:
	137	strMsg = "TRANSMIT";
	138	break;
	139	case MSGCODE_TRANSMIT_EOM:
	140	strMsg = "TRANSMIT_EOM";
	141	break;
	142	case MSGCODE_TRANSMIT_IDLETIME:
	143	strMsg = "TRANSMIT_IDLETIME";
	144	break;
	145	case MSGCODE_TRANSMIT_ACK_POLARITY:
	146	strMsg = "TRANSMIT_ACK_POLARITY";
	147	break;
	148	case MSGCODE_TRANSMIT_LINE_TIMEOUT:
	149	strMsg = "TRANSMIT_LINE_TIMEOUT";
	150	break;
	151	case MSGCODE_TRANSMIT_SUCCEEDED:
	152	strMsg = "TRANSMIT_SUCCEEDED";
	153	break;
	154	case MSGCODE_TRANSMIT_FAILED_LINE:
	155	strMsg = "TRANSMIT_FAILED_LINE";
	156	break;
	157	case MSGCODE_TRANSMIT_FAILED_ACK:
	158	strMsg = "TRANSMIT_FAILED_ACK";
	159	break;
	160	case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
	161	strMsg = "TRANSMIT_FAILED_TIMEOUT_DATA";
	162	break;
	163	case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
	164	strMsg = "TRANSMIT_FAILED_TIMEOUT_LINE";
	165	break;
	166	case MSGCODE_FIRMWARE_VERSION:
	167	strMsg = "FIRMWARE_VERSION";
	168	break;
	169	case MSGCODE_START_BOOTLOADER:
	170	strMsg = "START_BOOTLOADER";
	171	break;
	172	case MSGCODE_FRAME_EOM:
	173	strMsg = "FRAME_EOM";
	174	break;
	175	case MSGCODE_FRAME_ACK:
	176	strMsg = "FRAME_ACK";
	177	break;
	178	}
	179
	180	return strMsg;
	181	}
	182
	183	CStdString CCECAdapterMessage::ToString(void) const
	184	{
	185	CStdString strMsg;
	186	strMsg = MessageCodeAsString();
	187
	188	switch (message())
	189	{
	190	case MSGCODE_TIMEOUT_ERROR:
	191	case MSGCODE_HIGH_ERROR:
	192	case MSGCODE_LOW_ERROR:
	193	{
	194	int iLine = (size() >= 3) ? (at(1) << 8) \| at(2) : 0;
	195	uint32_t iTime = (size() >= 7) ? (at(3) << 24) \| (at(4) << 16) \| (at(5) << 8) \| at(6) : 0;
	196	strMsg.AppendFormat(" line:%i", iLine);
	197	strMsg.AppendFormat(" time:%u", iTime);
	198	}
	199	break;
	200	case MSGCODE_FRAME_START:
	201	if (size() >= 2)
	202	strMsg.AppendFormat(" initiator:%1x destination:%1x ack:%s %s", initiator(), destination(), ack() ? "high" : "low", eom() ? "eom" : "");
	203	break;
	204	case MSGCODE_FRAME_DATA:
	205	if (size() >= 2)
	206	strMsg.AppendFormat(" %02x %s", at(1), eom() ? "eom" : "");
	207	break;
	208	default:
	209	break;
	210	}
	211
	212	return strMsg;
	213	}
	214
	215	bool CCECAdapterMessage::is_error(void) const
	216	{
	217	cec_adapter_messagecode code = message();
	218	return (code == MSGCODE_TIMEOUT_ERROR \|\|
	219	code == MSGCODE_HIGH_ERROR \|\|
	220	code == MSGCODE_LOW_ERROR \|\|
	221	code == MSGCODE_RECEIVE_FAILED \|\|
	222	code == MSGCODE_COMMAND_REJECTED \|\|
	223	code == MSGCODE_TRANSMIT_LINE_TIMEOUT \|\|
	224	code == MSGCODE_TRANSMIT_FAILED_LINE \|\|
	225	code == MSGCODE_TRANSMIT_FAILED_ACK \|\|
	226	code == MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA \|\|
	227	code == MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE);
	228	}
	229
	230	void CCECAdapterMessage::push_escaped(int16_t byte)
	231	{
	232	if (byte >= MSGESC && byte != MSGSTART)
	233	{
	234	push_back(MSGESC);
	235	push_back((uint8_t) (byte - ESCOFFSET));
	236	}
	237	else
	238	push_back((uint8_t) byte);
	239	}
	240
	241	CAdapterCommunication::CAdapterCommunication(CLibCEC *controller) :
	242	m_port(NULL),
	243	m_controller(controller)
	244	{
	245	m_port = new CSerialPort;
	246	}
	247
	248	CAdapterCommunication::~CAdapterCommunication(void)
	249	{
	250	Close();
	251
	252	if (m_port)
	253	{
	254	delete m_port;
	255	m_port = NULL;
	256	}
	257	}
	258
	259	bool CAdapterCommunication::Open(const char strPort, uint16_t iBaudRate / = 38400 /, uint32_t iTimeoutMs / = 10000 */)
	260	{
	261	CLockObject lock(&m_mutex);
	262	if (!m_port)
	263	{
	264	m_controller->AddLog(CEC_LOG_ERROR, "port is NULL");
	265	return false;
	266	}
	267
	268	if (IsOpen())
	269	{
	270	m_controller->AddLog(CEC_LOG_ERROR, "port is already open");
	271	}
	272
	273	if (!m_port->Open(strPort, iBaudRate))
	274	{
	275	CStdString strError;
	276	strError.Format("error opening serial port '%s': %s", strPort, m_port->GetError().c_str());
	277	m_controller->AddLog(CEC_LOG_ERROR, strError);
	278	return false;
	279	}
	280
	281	m_controller->AddLog(CEC_LOG_DEBUG, "connection opened");
	282
	283	//clear any input bytes
	284	uint8_t buff[1024];
	285	m_port->Read(buff, sizeof(buff), 500);
	286
	287	if (CreateThread())
	288	{
	289	m_startCondition.Wait(&m_mutex);
	290	m_controller->AddLog(CEC_LOG_DEBUG, "communication thread started");
	291	return true;
	292	}
	293	else
	294	{
	295	m_controller->AddLog(CEC_LOG_DEBUG, "could not create a communication thread");
	296	}
	297
	298	return false;
	299	}
	300
	301	void CAdapterCommunication::Close(void)
	302	{
	303	CLockObject lock(&m_mutex);
	304	m_startCondition.Broadcast();
	305	m_rcvCondition.Broadcast();
	306	StopThread();
	307	}
	308
	309	void *CAdapterCommunication::Process(void)
	310	{
	311	{
	312	CLockObject lock(&m_mutex);
	313	m_startCondition.Signal();
	314	}
	315
	316	while (!IsStopped())
	317	{
	318	ReadFromDevice(500);
	319	Sleep(5);
	320	WriteNextCommand();
	321	}
	322
	323	return NULL;
	324	}
	325
	326	bool CAdapterCommunication::ReadFromDevice(uint32_t iTimeout)
	327	{
	328	int32_t iBytesRead;
	329	uint8_t buff[1024];
	330	if (!m_port)
	331	return false;
	332
	333	iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout);
	334	if (iBytesRead < 0 \|\| iBytesRead > 256)
	335	{
	336	CStdString strError;
	337	strError.Format("error reading from serial port: %s", m_port->GetError().c_str());
	338	m_controller->AddLog(CEC_LOG_ERROR, strError);
	339	return false;
	340	}
	341	else if (iBytesRead > 0)
	342	AddData(buff, (uint8_t) iBytesRead);
	343
	344	return iBytesRead > 0;
	345	}
	346
	347	void CAdapterCommunication::AddData(uint8_t *data, uint8_t iLen)
	348	{
	349	CLockObject lock(&m_mutex);
	350	for (unsigned int iPtr = 0; iPtr < iLen; iPtr++)
	351	m_inBuffer.Push(data[iPtr]);
	352
	353	m_rcvCondition.Signal();
	354	}
	355
	356	void CAdapterCommunication::WriteNextCommand(void)
	357	{
	358	CCECAdapterMessage *msg;
	359	if (m_outBuffer.Pop(msg))
	360	{
	361	CLockObject lock(&msg->mutex);
	362	if (m_port->Write(msg) != (int32_t) msg->size())
	363	{
	364	CStdString strError;
	365	strError.Format("error writing to serial port: %s", m_port->GetError().c_str());
	366	m_controller->AddLog(CEC_LOG_ERROR, strError);
	367	msg->state = ADAPTER_MESSAGE_STATE_ERROR;
	368	}
	369	else
	370	{
	371	m_controller->AddLog(CEC_LOG_DEBUG, "command sent");
	372	CCondition::Sleep((uint32_t) msg->size() * 24 /data/ + 5 /start bit (4.5 ms)/ + 10);
	373	msg->state = ADAPTER_MESSAGE_STATE_SENT;
	374	}
	375	msg->condition.Signal();
	376	}
	377	}
	378
	379	bool CAdapterCommunication::Write(CCECAdapterMessage *data)
	380	{
	381	data->state = ADAPTER_MESSAGE_STATE_WAITING;
	382	m_outBuffer.Push(data);
	383	return true;
	384	}
	385
	386	bool CAdapterCommunication::Read(CCECAdapterMessage &msg, uint32_t iTimeout)
	387	{
	388	CLockObject lock(&m_mutex);
	389
	390	msg.clear();
	391	uint64_t iNow = GetTimeMs();
	392	uint64_t iTarget = iNow + iTimeout;
	393	bool bGotFullMessage(false);
	394	bool bNextIsEscaped(false);
	395	bool bGotStart(false);
	396
	397	while(!bGotFullMessage && iNow < iTarget)
	398	{
	399	uint8_t buf = 0;
	400	if (!m_inBuffer.Pop(buf))
	401	{
	402	if (!m_rcvCondition.Wait(&m_mutex, (uint32_t) (iTarget - iNow)))
	403	return false;
	404	}
	405
	406	if (!bGotStart)
	407	{
	408	if (buf == MSGSTART)
	409	bGotStart = true;
	410	continue;
	411	}
	412	else if (buf == MSGSTART) //we found a msgstart before msgend, this is not right, remove
	413	{
	414	m_controller->AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND");
	415	msg.clear();
	416	bGotStart = true;
	417	}
	418
	419	if (buf == MSGEND)
	420	{
	421	bGotFullMessage = true;
	422	}
	423	else if (bNextIsEscaped)
	424	{
	425	msg.push_back(buf + (uint8_t)ESCOFFSET);
	426	bNextIsEscaped = false;
	427	}
	428	else if (buf == MSGESC)
	429	bNextIsEscaped = true;
	430	else
	431	msg.push_back(buf);
	432	}
	433
	434	if (bGotFullMessage)
	435	msg.state = ADAPTER_MESSAGE_STATE_RECEIVED;
	436
	437	return bGotFullMessage;
	438	}
	439
	440	std::string CAdapterCommunication::GetError(void) const
	441	{
	442	return m_port->GetError();
	443	}
	444
	445	bool CAdapterCommunication::StartBootloader(void)
	446	{
	447	bool bReturn(false);
	448	if (!IsRunning())
	449	return bReturn;
	450
	451	m_controller->AddLog(CEC_LOG_DEBUG, "starting the bootloader");
	452	CCECAdapterMessage *output = new CCECAdapterMessage;
	453
	454	output->push_back(MSGSTART);
	455	output->push_escaped(MSGCODE_START_BOOTLOADER);
	456	output->push_back(MSGEND);
	457
	458	if ((bReturn = Write(output)) == false)
	459	m_controller->AddLog(CEC_LOG_ERROR, "could not start the bootloader");
	460
	461	delete output;
	462
	463	return bReturn;
	464	}
	465
	466	bool CAdapterCommunication::PingAdapter(void)
	467	{
	468	bool bReturn(false);
	469	if (!IsRunning())
	470	return bReturn;
	471
	472	m_controller->AddLog(CEC_LOG_DEBUG, "sending ping");
	473	CCECAdapterMessage *output = new CCECAdapterMessage;
	474
	475	output->push_back(MSGSTART);
	476	output->push_escaped(MSGCODE_PING);
	477	output->push_back(MSGEND);
	478
	479	if ((bReturn = Write(output)) == false)
	480	m_controller->AddLog(CEC_LOG_ERROR, "could not send ping command");
	481
	482	// TODO check for pong
	483	delete output;
	484
	485	return bReturn;
	486	}
	487
	488	bool CAdapterCommunication::IsOpen(void) const
	489	{
	490	return !IsStopped() && m_port->IsOpen() && IsRunning();
	491	}