src/lib/CECParser.cpp

   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 "CECParser.h"
  34
  35 #include <algorithm>
  36 #include <cstdio>
  37 #include <cstdlib>
  38 #include <cstring>
  39 #include <sys/stat.h>
  40 #include "util/StdString.h"
  41 #include "libPlatform/serialport.h"
  42 #include "util/threads.h"
  43 #include "util/timeutils.h"
  44 #include "CECDetect.h"
  45
  46 using namespace CEC;
  47 using namespace std;
  48
  49 #define CEC_MAX_RETRY 5
  50
  51 /*!
  52  * ICECDevice implementation
  53  */
  54 //@{
  55 CCECParser::CCECParser(const char *strDeviceName, cec_logical_address iLogicalAddress /* = CECDEVICE_PLAYBACKDEVICE1 */, int iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS*/) :
  56     m_inbuf(NULL),
  57     m_iInbufSize(0),
  58     m_iInbufUsed(0),
  59     m_iCurrentButton(CEC_USER_CONTROL_CODE_UNKNOWN),
  60     m_physicaladdress(iPhysicalAddress),
  61     m_iLogicalAddress(iLogicalAddress),
  62     m_strDeviceName(strDeviceName),
  63     m_bRunning(false)
  64 {
  65   m_serialport = new CSerialPort;
  66 }
  67
  68 CCECParser::~CCECParser(void)
  69 {
  70   Close(0);
  71   m_serialport->Close();
  72   delete m_serialport;
  73 }
  74
  75 bool CCECParser::Open(const char *strPort, int iTimeoutMs /* = 10000 */)
  76 {
  77   bool bReturn(false);
  78
  79   if (!(bReturn = m_serialport->Open(strPort, 38400)))
  80   {
  81     CStdString strError;
  82     strError.Format("error opening serial port '%s': %s", strPort, m_serialport->GetError().c_str());
  83     AddLog(CEC_LOG_ERROR, strError);
  84     return bReturn;
  85   }
  86
  87   //clear any input bytes
  88   uint8_t buff[1024];
  89   m_serialport->Read(buff, sizeof(buff), CEC_SETTLE_DOWN_TIME);
  90
  91   if (bReturn)
  92     bReturn = SetLogicalAddress(m_iLogicalAddress);
  93
  94   if (!bReturn)
  95   {
  96     CStdString strError;
  97     strError.Format("error opening serial port '%s': %s", strPort, m_serialport->GetError().c_str());
  98     AddLog(CEC_LOG_ERROR, strError);
  99     return bReturn;
 100   }
 101
 102   if (bReturn)
 103   {
 104     m_bRunning = true;
 105     if (pthread_create(&m_thread, NULL, (void *(*) (void *))&CCECParser::ThreadHandler, (void *)this) == 0)
 106       pthread_detach(m_thread);
 107     else
 108       m_bRunning = false;
 109   }
 110
 111   return bReturn;
 112 }
 113
 114 bool CCECParser::Close(int iTimeoutMs /* = 2000 */)
 115 {
 116   m_bRunning = false;
 117   bool bExit(false);
 118   if (iTimeoutMs > 0)
 119   {
 120     bExit = m_exitCondition.Wait(&m_mutex, iTimeoutMs);
 121     m_mutex.Unlock();
 122   }
 123   else
 124   {
 125     pthread_join(m_thread, NULL);
 126     bExit = true;
 127   }
 128
 129   return bExit;
 130 }
 131
 132 void *CCECParser::ThreadHandler(CCECParser *parser)
 133 {
 134   if (parser)
 135     parser->Process();
 136   return 0;
 137 }
 138
 139 bool CCECParser::Process(void)
 140 {
 141   int64_t now = GetTimeMs();
 142   while (m_bRunning)
 143   {
 144     {
 145       CLockObject lock(&m_mutex, 1000);
 146       if (lock.IsLocked())
 147       {
 148         if (!ReadFromDevice(100))
 149         {
 150           m_bRunning = false;
 151           return false;
 152         }
 153       }
 154     }
 155
 156     //AddLog(CEC_LOG_DEBUG, "processing messages");
 157     ProcessMessages();
 158     now = GetTimeMs();
 159     CheckKeypressTimeout(now);
 160     CCondition::Sleep(50);
 161   }
 162
 163   AddLog(CEC_LOG_DEBUG, "reader thread terminated");
 164   m_bRunning = false;
 165   m_exitCondition.Signal();
 166   return true;
 167 }
 168
 169 bool CCECParser::Ping(void)
 170 {
 171   if (!m_bRunning)
 172     return false;
 173
 174   AddLog(CEC_LOG_DEBUG, "sending ping");
 175   cec_frame output;
 176   output.push_back(MSGSTART);
 177   PushEscaped(output, MSGCODE_PING);
 178   output.push_back(MSGEND);
 179
 180   if (!TransmitFormatted(output, false, (int64_t) 5000))
 181   {
 182     AddLog(CEC_LOG_ERROR, "could not send ping command");
 183     return false;
 184   }
 185
 186   AddLog(CEC_LOG_DEBUG, "ping tranmitted");
 187
 188   // TODO check for pong
 189   return true;
 190 }
 191
 192 bool CCECParser::StartBootloader(void)
 193 {
 194   if (!m_bRunning)
 195     return false;
 196
 197   AddLog(CEC_LOG_DEBUG, "starting the bootloader");
 198   cec_frame output;
 199   output.push_back(MSGSTART);
 200   PushEscaped(output, MSGCODE_START_BOOTLOADER);
 201   output.push_back(MSGEND);
 202
 203   if (!TransmitFormatted(output, false, (int64_t) 5000))
 204   {
 205     AddLog(CEC_LOG_ERROR, "could not start the bootloader");
 206     return false;
 207   }
 208
 209   AddLog(CEC_LOG_DEBUG, "bootloader start command transmitted");
 210   return true;
 211 }
 212
 213 uint8_t CCECParser::GetSourceDestination(cec_logical_address destination /* = CECDEVICE_BROADCAST */)
 214 {
 215   return ((uint8_t)m_iLogicalAddress << 4) + (uint8_t)destination;
 216 }
 217
 218 bool CCECParser::PowerOffDevices(cec_logical_address address /* = CECDEVICE_BROADCAST */)
 219 {
 220   return StandbyDevices(address);
 221 }
 222
 223 bool CCECParser::PowerOnDevices(cec_logical_address address /* = CECDEVICE_TV */)
 224 {
 225   if (!m_bRunning)
 226     return false;
 227
 228   CStdString strLog;
 229   strLog.Format("powering on devices with logical address %d", (int8_t)address);
 230   AddLog(CEC_LOG_DEBUG, strLog.c_str());
 231   cec_frame frame;
 232   frame.push_back(GetSourceDestination(address));
 233   frame.push_back(CEC_OPCODE_TEXT_VIEW_ON);
 234   return Transmit(frame);
 235 }
 236
 237 bool CCECParser::StandbyDevices(cec_logical_address address /* = CECDEVICE_BROADCAST */)
 238 {
 239   if (!m_bRunning)
 240     return false;
 241
 242   CStdString strLog;
 243   strLog.Format("putting all devices with logical address %d in standby mode", (int8_t)address);
 244   AddLog(CEC_LOG_DEBUG, strLog.c_str());
 245   cec_frame frame;
 246   frame.push_back(GetSourceDestination(address));
 247   frame.push_back(CEC_OPCODE_STANDBY);
 248   return Transmit(frame);
 249 }
 250
 251 bool CCECParser::SetActiveView(void)
 252 {
 253   if (!m_bRunning)
 254     return false;
 255
 256   AddLog(CEC_LOG_DEBUG, "setting active view");
 257   cec_frame frame;
 258   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 259   frame.push_back(CEC_OPCODE_ACTIVE_SOURCE);
 260   frame.push_back((m_physicaladdress >> 8) & 0xFF);
 261   frame.push_back(m_physicaladdress & 0xFF);
 262   return Transmit(frame);
 263 }
 264
 265 bool CCECParser::SetInactiveView(void)
 266 {
 267   if (!m_bRunning)
 268     return false;
 269
 270   AddLog(CEC_LOG_DEBUG, "setting inactive view");
 271   cec_frame frame;
 272   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 273   frame.push_back(CEC_OPCODE_INACTIVE_SOURCE);
 274   frame.push_back((m_physicaladdress >> 8) & 0xFF);
 275   frame.push_back(m_physicaladdress & 0xFF);
 276   return Transmit(frame);
 277 }
 278
 279 bool CCECParser::GetNextLogMessage(cec_log_message *message)
 280 {
 281   return m_bRunning ? m_logBuffer.Pop(*message) : false;
 282 }
 283
 284 bool CCECParser::GetNextKeypress(cec_keypress *key)
 285 {
 286   return m_bRunning ? m_keyBuffer.Pop(*key) : false;
 287 }
 288
 289 bool CCECParser::GetNextCommand(cec_command *command)
 290 {
 291   return m_bRunning ? m_commandBuffer.Pop(*command) : false;
 292 }
 293 //@}
 294
 295 void CCECParser::TransmitAbort(cec_logical_address address, cec_opcode opcode, ECecAbortReason reason /* = CEC_ABORT_REASON_UNRECOGNIZED_OPCODE */)
 296 {
 297   AddLog(CEC_LOG_DEBUG, "transmitting abort message");
 298   cec_frame frame;
 299   frame.push_back(GetSourceDestination(address));
 300   frame.push_back(CEC_OPCODE_FEATURE_ABORT);
 301   frame.push_back(opcode);
 302   frame.push_back(reason);
 303   Transmit(frame);
 304 }
 305
 306 void CCECParser::ReportCECVersion(cec_logical_address address /* = CECDEVICE_TV */)
 307 {
 308   cec_frame frame;
 309   AddLog(CEC_LOG_NOTICE, "reporting CEC version as 1.3a");
 310   frame.push_back(GetSourceDestination(address));
 311   frame.push_back(CEC_OPCODE_CEC_VERSION);
 312   frame.push_back(CEC_VERSION_1_3A);
 313   Transmit(frame);
 314 }
 315
 316 void CCECParser::ReportPowerState(cec_logical_address address /*= CECDEVICE_TV */, bool bOn /* = true */)
 317 {
 318   cec_frame frame;
 319   if (bOn)
 320     AddLog(CEC_LOG_NOTICE, "reporting \"On\" power status");
 321   else
 322     AddLog(CEC_LOG_NOTICE, "reporting \"Off\" power status");
 323
 324   frame.push_back(GetSourceDestination(address));
 325   frame.push_back(CEC_OPCODE_REPORT_POWER_STATUS);
 326   frame.push_back(bOn ? CEC_POWER_STATUS_ON : CEC_POWER_STATUS_STANDBY);
 327   Transmit(frame);
 328 }
 329
 330 void CCECParser::ReportMenuState(cec_logical_address address /* = CECDEVICE_TV */, bool bActive /* = true */)
 331 {
 332   cec_frame frame;
 333   if (bActive)
 334     AddLog(CEC_LOG_NOTICE, "reporting menu state as active");
 335   else
 336     AddLog(CEC_LOG_NOTICE, "reporting menu state as inactive");
 337
 338   frame.push_back(GetSourceDestination(address));
 339   frame.push_back(CEC_OPCODE_MENU_STATUS);
 340   frame.push_back(bActive ? CEC_MENU_STATE_ACTIVATED : CEC_MENU_STATE_DEACTIVATED);
 341   Transmit(frame);
 342 }
 343
 344 void CCECParser::ReportVendorID(cec_logical_address address /* = CECDEVICE_TV */)
 345 {
 346   AddLog(CEC_LOG_NOTICE, "vendor ID requested, feature abort");
 347   TransmitAbort(address, CEC_OPCODE_GIVE_DEVICE_VENDOR_ID);
 348 }
 349
 350 void CCECParser::ReportOSDName(cec_logical_address address /* = CECDEVICE_TV */)
 351 {
 352   cec_frame frame;
 353   const char *osdname = m_strDeviceName.c_str();
 354   CStdString strLog;
 355   strLog.Format("reporting OSD name as %s", osdname);
 356   AddLog(CEC_LOG_NOTICE, strLog.c_str());
 357   frame.push_back(GetSourceDestination(address));
 358   frame.push_back(CEC_OPCODE_SET_OSD_NAME);
 359
 360   for (unsigned int i = 0; i < strlen(osdname); i++)
 361     frame.push_back(osdname[i]);
 362
 363   Transmit(frame);
 364 }
 365
 366 void CCECParser::ReportPhysicalAddress(void)
 367 {
 368   cec_frame frame;
 369   CStdString strLog;
 370   strLog.Format("reporting physical address as %04x", m_physicaladdress);
 371   AddLog(CEC_LOG_NOTICE, strLog.c_str());
 372   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 373   frame.push_back(CEC_OPCODE_REPORT_PHYSICAL_ADDRESS);
 374   frame.push_back((m_physicaladdress >> 8) & 0xFF);
 375   frame.push_back(m_physicaladdress & 0xFF);
 376   frame.push_back(CEC_DEVICE_TYPE_PLAYBACK_DEVICE);
 377   Transmit(frame);
 378 }
 379
 380 void CCECParser::BroadcastActiveSource(void)
 381 {
 382   cec_frame frame;
 383   AddLog(CEC_LOG_NOTICE, "broadcasting active source");
 384   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 385   frame.push_back(CEC_OPCODE_ACTIVE_SOURCE);
 386   frame.push_back((m_physicaladdress >> 8) & 0xFF);
 387   frame.push_back(m_physicaladdress & 0xFF);
 388   Transmit(frame);
 389 }
 390
 391 bool CCECParser::TransmitFormatted(const cec_frame &data, bool bWaitForAck /* = true */, int64_t iTimeout /* = 2000 */)
 392 {
 393   CLockObject lock(&m_mutex, iTimeout);
 394   if (!lock.IsLocked())
 395   {
 396     AddLog(CEC_LOG_ERROR, "could not get a write lock");
 397     return false;
 398   }
 399
 400   if (m_serialport->Write(data) != data.size())
 401   {
 402     CStdString strError;
 403     strError.Format("error writing to serial port: %s", m_serialport->GetError().c_str());
 404     AddLog(CEC_LOG_ERROR, strError);
 405     return false;
 406   }
 407   AddLog(CEC_LOG_DEBUG, "command sent");
 408
 409   CCondition::Sleep((int) data.size() * 24 /*data*/ + 5 /*start bit (4.5 ms)*/ + 50 /* to be on the safe side */);
 410   if (bWaitForAck && !WaitForAck())
 411   {
 412     AddLog(CEC_LOG_DEBUG, "did not receive ACK");
 413     return false;
 414   }
 415
 416   return true;
 417 }
 418
 419 bool CCECParser::Transmit(const cec_frame &data, bool bWaitForAck /* = true */, int64_t iTimeout /* = 5000 */)
 420 {
 421   CStdString txStr = "transmit ";
 422   for (unsigned int i = 0; i < data.size(); i++)
 423     txStr.AppendFormat(" %02x", data[i]);
 424   AddLog(CEC_LOG_DEBUG, txStr.c_str());
 425
 426   if (data.empty())
 427   {
 428     AddLog(CEC_LOG_WARNING, "transmit buffer is empty");
 429     return false;
 430   }
 431
 432   cec_frame output;
 433
 434   //set ack polarity to high when transmitting to the broadcast address
 435   //set ack polarity low when transmitting to any other address
 436   output.push_back(MSGSTART);
 437   PushEscaped(output, MSGCODE_TRANSMIT_ACK_POLARITY);
 438
 439   if ((data[0] & 0xF) == 0xF)
 440     PushEscaped(output, CEC_TRUE);
 441   else
 442     PushEscaped(output, CEC_FALSE);
 443
 444   output.push_back(MSGEND);
 445
 446   for (unsigned int i = 0; i < data.size(); i++)
 447   {
 448     output.push_back(MSGSTART);
 449
 450     if (i == data.size() - 1)
 451       PushEscaped(output, MSGCODE_TRANSMIT_EOM);
 452     else
 453       PushEscaped(output, MSGCODE_TRANSMIT);
 454
 455     PushEscaped(output, data[i]);
 456
 457     output.push_back(MSGEND);
 458   }
 459
 460   return TransmitFormatted(output, bWaitForAck, iTimeout);
 461 }
 462
 463 bool CCECParser::WaitForAck(int64_t iTimeout /* = 1000 */)
 464 {
 465   bool bGotAck(false);
 466   bool bError(false);
 467
 468   int64_t iNow = GetTimeMs();
 469   int64_t iTargetTime = iNow + iTimeout;
 470
 471   while (!bGotAck && !bError && (iTimeout <= 0 || iNow < iTargetTime))
 472   {
 473     if (!ReadFromDevice((int) iTimeout))
 474     {
 475       AddLog(CEC_LOG_ERROR, "failed to read from device");
 476       return false;
 477     }
 478
 479     cec_frame msg;
 480     while (!bGotAck && !bError && GetMessage(msg, false))
 481     {
 482       uint8_t iCode = msg[0] & ~(MSGCODE_FRAME_EOM | MSGCODE_FRAME_ACK);
 483
 484       switch (iCode)
 485       {
 486       case MSGCODE_COMMAND_ACCEPTED:
 487         AddLog(CEC_LOG_DEBUG, "MSGCODE_COMMAND_ACCEPTED");
 488         break;
 489       case MSGCODE_TRANSMIT_SUCCEEDED:
 490         AddLog(CEC_LOG_DEBUG, "MSGCODE_TRANSMIT_SUCCEEDED");
 491         // TODO
 492         bGotAck = true;
 493         break;
 494       case MSGCODE_RECEIVE_FAILED:
 495         AddLog(CEC_LOG_WARNING, "MSGCODE_RECEIVE_FAILED");
 496         bError = true;
 497         break;
 498       case MSGCODE_COMMAND_REJECTED:
 499         AddLog(CEC_LOG_WARNING, "MSGCODE_COMMAND_REJECTED");
 500         bError = true;
 501         break;
 502       case MSGCODE_TRANSMIT_FAILED_LINE:
 503         AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_LINE");
 504         bError = true;
 505         break;
 506       case MSGCODE_TRANSMIT_FAILED_ACK:
 507         AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_ACK");
 508         bError = true;
 509         break;
 510       case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
 511         AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA");
 512         bError = true;
 513         break;
 514       case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
 515         AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE");
 516         bError = true;
 517         break;
 518       default:
 519         m_frameBuffer.Push(msg);
 520         bGotAck = (msg[0] & MSGCODE_FRAME_ACK) != 0;
 521         break;
 522       }
 523       iNow = GetTimeMs();
 524     }
 525   }
 526
 527   return bGotAck && !bError;
 528 }
 529
 530 bool CCECParser::ReadFromDevice(int iTimeout)
 531 {
 532   uint8_t buff[1024];
 533   int iBytesRead = m_serialport->Read(buff, sizeof(buff), iTimeout);
 534   if (iBytesRead < 0)
 535   {
 536     CStdString strError;
 537     strError.Format("error reading from serial port: %s", m_serialport->GetError().c_str());
 538     AddLog(CEC_LOG_ERROR, strError);
 539     return false;
 540   }
 541   else if (iBytesRead > 0)
 542     AddData(buff, iBytesRead);
 543
 544   return true;
 545 }
 546
 547 void CCECParser::ProcessMessages(void)
 548 {
 549   cec_frame msg;
 550   while (m_bRunning && GetMessage(msg))
 551     ParseMessage(msg);
 552 }
 553
 554 bool CCECParser::GetMessage(cec_frame &msg, bool bFromBuffer /* = true */)
 555 {
 556   if (bFromBuffer && m_frameBuffer.Pop(msg))
 557     return true;
 558
 559   if (m_iInbufUsed < 1)
 560     return false;
 561
 562   //search for first start of message
 563   int startpos = -1;
 564   for (int i = 0; i < m_iInbufUsed; i++)
 565   {
 566     if (m_inbuf[i] == MSGSTART)
 567     {
 568       startpos = i;
 569       break;
 570     }
 571   }
 572
 573   if (startpos == -1)
 574     return false;
 575
 576   //move anything from the first start of message to the beginning of the buffer
 577   if (startpos > 0)
 578   {
 579     memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos);
 580     m_iInbufUsed -= startpos;
 581   }
 582
 583   if (m_iInbufUsed < 2)
 584     return false;
 585
 586   //look for end of message
 587   startpos = -1;
 588   int endpos = -1;
 589   for (int i = 1; i < m_iInbufUsed; i++)
 590   {
 591     if (m_inbuf[i] == MSGEND)
 592     {
 593       endpos = i;
 594       break;
 595     }
 596     else if (m_inbuf[i] == MSGSTART)
 597     {
 598       startpos = i;
 599       break;
 600     }
 601   }
 602
 603   if (startpos > 0) //we found a msgstart before msgend, this is not right, remove
 604   {
 605     AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND");
 606     memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos);
 607     m_iInbufUsed -= startpos;
 608     return false;
 609   }
 610
 611   if (endpos > 0) //found a MSGEND
 612   {
 613     msg.clear();
 614     bool isesc = false;
 615     for (int i = 1; i < endpos; i++)
 616     {
 617       if (isesc)
 618       {
 619         msg.push_back(m_inbuf[i] + (uint8_t)ESCOFFSET);
 620         isesc = false;
 621       }
 622       else if (m_inbuf[i] == MSGESC)
 623       {
 624         isesc = true;
 625       }
 626       else
 627       {
 628         msg.push_back(m_inbuf[i]);
 629       }
 630     }
 631
 632     if (endpos + 1 < m_iInbufUsed)
 633       memmove(m_inbuf, m_inbuf + endpos + 1, m_iInbufUsed - endpos - 1);
 634
 635     m_iInbufUsed -= endpos + 1;
 636
 637     return true;
 638   }
 639
 640   return false;
 641 }
 642
 643 void CCECParser::ParseMessage(cec_frame &msg)
 644 {
 645   if (msg.empty())
 646     return;
 647
 648   CStdString logStr;
 649   uint8_t iCode = msg[0] & ~(MSGCODE_FRAME_EOM | MSGCODE_FRAME_ACK);
 650   bool    bEom  = (msg[0] & MSGCODE_FRAME_EOM) != 0;
 651   bool    bAck  = (msg[0] & MSGCODE_FRAME_ACK) != 0;
 652
 653   switch(iCode)
 654   {
 655   case MSGCODE_NOTHING:
 656     AddLog(CEC_LOG_DEBUG, "MSGCODE_NOTHING");
 657     break;
 658   case MSGCODE_TIMEOUT_ERROR:
 659   case MSGCODE_HIGH_ERROR:
 660   case MSGCODE_LOW_ERROR:
 661     {
 662       if (iCode == MSGCODE_TIMEOUT_ERROR)
 663         logStr = "MSGCODE_TIMEOUT";
 664       else if (iCode == MSGCODE_HIGH_ERROR)
 665         logStr = "MSGCODE_HIGH_ERROR";
 666       else
 667         logStr = "MSGCODE_LOW_ERROR";
 668
 669       int iLine      = (msg.size() >= 3) ? (msg[1] << 8) | (msg[2]) : 0;
 670       uint32_t iTime = (msg.size() >= 7) ? (msg[3] << 24) | (msg[4] << 16) | (msg[5] << 8) | (msg[6]) : 0;
 671       logStr.AppendFormat(" line:%i", iLine);
 672       logStr.AppendFormat(" time:%u", iTime);
 673       AddLog(CEC_LOG_WARNING, logStr.c_str());
 674     }
 675     break;
 676   case MSGCODE_FRAME_START:
 677     {
 678       logStr = "MSGCODE_FRAME_START";
 679       m_currentframe.clear();
 680       if (msg.size() >= 2)
 681       {
 682         int iInitiator = msg[1] >> 4;
 683         int iDestination = msg[1] & 0xF;
 684         logStr.AppendFormat(" initiator:%u destination:%u ack:%s %s", iInitiator, iDestination, bAck ? "high" : "low", bEom ? "eom" : "");
 685
 686         m_currentframe.push_back(msg[1]);
 687       }
 688       AddLog(CEC_LOG_DEBUG, logStr.c_str());
 689     }
 690     break;
 691   case MSGCODE_FRAME_DATA:
 692     {
 693       logStr = "MSGCODE_FRAME_DATA";
 694       if (msg.size() >= 2)
 695       {
 696         uint8_t iData = msg[1];
 697         logStr.AppendFormat(" %02x", iData);
 698         m_currentframe.push_back(iData);
 699       }
 700       AddLog(CEC_LOG_DEBUG, logStr.c_str());
 701     }
 702     if (bEom)
 703       ParseCurrentFrame();
 704     break;
 705   default:
 706     break;
 707   }
 708 }
 709
 710 void CCECParser::ParseCurrentFrame(void)
 711 {
 712   uint8_t initiator = m_currentframe[0] >> 4;
 713   uint8_t destination = m_currentframe[0] & 0xF;
 714
 715   CStdString dataStr;
 716   dataStr.Format("received frame: initiator: %u destination: %u", initiator, destination);
 717
 718   if (m_currentframe.size() > 1)
 719   {
 720     dataStr += " data:";
 721     for (unsigned int i = 1; i < m_currentframe.size(); i++)
 722       dataStr.AppendFormat(" %02x", m_currentframe[i]);
 723   }
 724   AddLog(CEC_LOG_DEBUG, dataStr.c_str());
 725
 726   if (m_currentframe.size() <= 1)
 727     return;
 728
 729   vector<uint8_t> tx;
 730   cec_opcode opCode = (cec_opcode) m_currentframe[1];
 731   if (destination == (uint16_t) m_iLogicalAddress)
 732   {
 733     switch(opCode)
 734     {
 735     case CEC_OPCODE_GIVE_PHYSICAL_ADDRESS:
 736       ReportPhysicalAddress();
 737       SetActiveView();
 738       break;
 739     case CEC_OPCODE_GIVE_OSD_NAME:
 740       ReportOSDName((cec_logical_address)initiator);
 741       break;
 742     case CEC_OPCODE_GIVE_DEVICE_VENDOR_ID:
 743       ReportVendorID((cec_logical_address)initiator);
 744       break;
 745     case CEC_OPCODE_MENU_REQUEST:
 746       ReportMenuState((cec_logical_address)initiator);
 747       break;
 748     case CEC_OPCODE_GIVE_DEVICE_POWER_STATUS:
 749       ReportPowerState((cec_logical_address)initiator);
 750       break;
 751     case CEC_OPCODE_GET_CEC_VERSION:
 752       ReportCECVersion((cec_logical_address)initiator);
 753       break;
 754     case CEC_OPCODE_USER_CONTROL_PRESSED:
 755       if (m_currentframe.size() > 2)
 756       {
 757         AddKey();
 758
 759         if (m_currentframe[2] <= CEC_USER_CONTROL_CODE_MAX)
 760         {
 761           m_iCurrentButton = (cec_user_control_code) m_currentframe[2];
 762           m_buttontime = GetTimeMs();
 763         }
 764       }
 765       break;
 766     case CEC_OPCODE_USER_CONTROL_RELEASE:
 767       AddKey();
 768       break;
 769     default:
 770       cec_frame params = m_currentframe;
 771       params.erase(params.begin(), params.begin() + 2);
 772       AddCommand((cec_logical_address) initiator, (cec_logical_address) destination, opCode, &params);
 773       break;
 774     }
 775   }
 776   else if (destination == (uint8_t) CECDEVICE_BROADCAST)
 777   {
 778     if (opCode == CEC_OPCODE_REQUEST_ACTIVE_SOURCE)
 779     {
 780       BroadcastActiveSource();
 781     }
 782     else if (opCode == CEC_OPCODE_SET_STREAM_PATH)
 783     {
 784       if (m_currentframe.size() >= 4)
 785       {
 786         int streamaddr = ((int)m_currentframe[2] << 8) | ((int)m_currentframe[3]);
 787         CStdString strLog;
 788         strLog.Format("%i requests stream path from physical address %04x", initiator, streamaddr);
 789         AddLog(CEC_LOG_DEBUG, strLog.c_str());
 790         if (streamaddr == m_physicaladdress)
 791           BroadcastActiveSource();
 792       }
 793     }
 794     else
 795     {
 796       cec_frame params = m_currentframe;
 797       params.erase(params.begin(), params.begin() + 2);
 798       AddCommand((cec_logical_address) initiator, (cec_logical_address) destination, opCode, &params);
 799     }
 800   }
 801   else
 802   {
 803     CStdString strLog;
 804     strLog.Format("ignoring frame: destination: %u != %u", destination, (uint16_t)m_iLogicalAddress);
 805     AddLog(CEC_LOG_DEBUG, strLog.c_str());
 806   }
 807 }
 808
 809 void CCECParser::AddData(uint8_t *data, int iLen)
 810 {
 811   if (iLen + m_iInbufUsed > m_iInbufSize)
 812   {
 813     m_iInbufSize = iLen + m_iInbufUsed;
 814     m_inbuf = (uint8_t*)realloc(m_inbuf, m_iInbufSize);
 815   }
 816
 817   memcpy(m_inbuf + m_iInbufUsed, data, iLen);
 818   m_iInbufUsed += iLen;
 819 }
 820
 821 void CCECParser::PushEscaped(cec_frame &vec, uint8_t byte)
 822 {
 823   if (byte >= MSGESC && byte != MSGSTART)
 824   {
 825     vec.push_back(MSGESC);
 826     vec.push_back(byte - ESCOFFSET);
 827   }
 828   else
 829   {
 830     vec.push_back(byte);
 831   }
 832 }
 833
 834 void CCECParser::CheckKeypressTimeout(int64_t now)
 835 {
 836   if (m_iCurrentButton != CEC_USER_CONTROL_CODE_UNKNOWN && now - m_buttontime > 500)
 837   {
 838     AddKey();
 839     m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
 840   }
 841 }
 842
 843 bool CCECParser::SetLogicalAddress(cec_logical_address iLogicalAddress)
 844 {
 845   CStdString strLog;
 846   strLog.Format("setting logical address to %d", iLogicalAddress);
 847   AddLog(CEC_LOG_NOTICE, strLog.c_str());
 848
 849   m_iLogicalAddress = iLogicalAddress;
 850   return SetAckMask(0x1 << (uint8_t)m_iLogicalAddress);
 851 }
 852
 853 bool CCECParser::SetAckMask(uint16_t iMask)
 854 {
 855   CStdString strLog;
 856   strLog.Format("setting ackmask to %2x", iMask);
 857   AddLog(CEC_LOG_DEBUG, strLog.c_str());
 858
 859   cec_frame output;
 860
 861   output.push_back(MSGSTART);
 862   PushEscaped(output, MSGCODE_SET_ACK_MASK);
 863   PushEscaped(output, iMask >> 8);
 864   PushEscaped(output, (uint8_t)iMask);
 865   output.push_back(MSGEND);
 866
 867   if (m_serialport->Write(output) == -1)
 868   {
 869     strLog.Format("error writing to serial port: %s", m_serialport->GetError().c_str());
 870     AddLog(CEC_LOG_ERROR, strLog);
 871     return false;
 872   }
 873
 874   return true;
 875 }
 876
 877 void CCECParser::AddLog(cec_log_level level, const string &strMessage)
 878 {
 879   cec_log_message message;
 880   message.level = level;
 881   message.message.assign(strMessage.c_str());
 882   m_logBuffer.Push(message);
 883 }
 884
 885 void CCECParser::AddKey(void)
 886 {
 887   if (m_iCurrentButton != CEC_USER_CONTROL_CODE_UNKNOWN)
 888   {
 889     cec_keypress key;
 890     key.duration = (unsigned int) (GetTimeMs() - m_buttontime);
 891     key.keycode = m_iCurrentButton;
 892     m_keyBuffer.Push(key);
 893     m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
 894     m_buttontime = 0;
 895   }
 896 }
 897
 898 void CCECParser::AddCommand(cec_logical_address source, cec_logical_address destination, cec_opcode opcode, cec_frame *parameters)
 899 {
 900   cec_command command;
 901   command.source       = source;
 902   command.destination  = destination;
 903   command.opcode       = opcode;
 904   if (parameters)
 905     command.parameters = *parameters;
 906   if (m_commandBuffer.Push(command))
 907   {
 908     CStdString strDebug;
 909     strDebug.Format("stored command '%d' in the command buffer. buffer size = %d", opcode, m_commandBuffer.Size());
 910     AddLog(CEC_LOG_DEBUG, strDebug);
 911   }
 912   else
 913   {
 914     AddLog(CEC_LOG_WARNING, "command buffer is full");
 915   }
 916 }
 917
 918 int CCECParser::GetMinVersion(void)
 919 {
 920   return CEC_MIN_VERSION;
 921 }
 922
 923 int CCECParser::GetLibVersion(void)
 924 {
 925   return CEC_LIB_VERSION;
 926 }
 927
 928 int CCECParser::FindDevices(std::vector<cec_device> &deviceList, const char *strDevicePath /* = NULL */)
 929 {
 930   CStdString strDebug;
 931   if (strDevicePath)
 932     strDebug.Format("trying to autodetect the com port for device path '%s'", strDevicePath);
 933   else
 934     strDebug.Format("trying to autodetect all CEC adapters");
 935   AddLog(CEC_LOG_DEBUG, strDebug);
 936
 937   return CCECDetect::FindDevices(deviceList, strDevicePath);
 938 }
 939
 940 DECLSPEC void * CECCreate(const char *strDeviceName, CEC::cec_logical_address iLogicalAddress /*= CEC::CECDEVICE_PLAYBACKDEVICE1 */, int iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS */)
 941 {
 942   return static_cast< void* > (new CCECParser(strDeviceName, iLogicalAddress, iPhysicalAddress));
 943 }