src/lib/CECProcessor.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 "CECProcessor.h"
  34
  35 #include "AdapterCommunication.h"
  36 #include "LibCEC.h"
  37 #include "util/StdString.h"
  38 #include "platform/timeutils.h"
  39
  40 using namespace CEC;
  41 using namespace std;
  42
  43 CCECProcessor::CCECProcessor(CLibCEC *controller, CAdapterCommunication *serComm, const char *strDeviceName, cec_logical_address iLogicalAddress /* = CECDEVICE_PLAYBACKDEVICE1 */, uint16_t iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS*/) :
  44     m_iPhysicalAddress(iPhysicalAddress),
  45     m_iLogicalAddress(iLogicalAddress),
  46     m_strDeviceName(strDeviceName),
  47     m_communication(serComm),
  48     m_controller(controller)
  49 {
  50   for (uint8_t iPtr = 0; iPtr < 16; iPtr++)
  51     m_vendorIds[iPtr] = CEC_VENDOR_UNKNOWN;
  52   for (uint8_t iPtr = 0; iPtr < 16; iPtr++)
  53     m_vendorClasses[iPtr] = (uint8_t) 0;
  54 }
  55
  56 CCECProcessor::~CCECProcessor(void)
  57 {
  58   StopThread();
  59   m_communication = NULL;
  60   m_controller = NULL;
  61 }
  62
  63 bool CCECProcessor::Start(void)
  64 {
  65   if (!m_communication || !m_communication->IsOpen())
  66   {
  67     m_controller->AddLog(CEC_LOG_ERROR, "connection is closed");
  68     return false;
  69   }
  70
  71   if (!SetLogicalAddress(m_iLogicalAddress))
  72   {
  73     m_controller->AddLog(CEC_LOG_ERROR, "could not set the logical address");
  74     return false;
  75   }
  76
  77   if (CreateThread())
  78     return true;
  79   else
  80     m_controller->AddLog(CEC_LOG_ERROR, "could not create a processor thread");
  81
  82   return false;
  83 }
  84
  85 void *CCECProcessor::Process(void)
  86 {
  87   m_controller->AddLog(CEC_LOG_DEBUG, "processor thread started");
  88
  89   cec_command command;
  90   cec_adapter_message msg;
  91
  92   while (!IsStopped())
  93   {
  94     bool bParseFrame(false);
  95     bool bError(false);
  96     bool bTransmitSucceeded(false);
  97     command.clear();
  98     msg.clear();
  99
 100     {
 101       CLockObject lock(&m_mutex);
 102       if (m_communication->IsOpen() && m_communication->Read(msg, 50))
 103         ParseMessage(msg, &bError, &bTransmitSucceeded, &bParseFrame);
 104
 105       bParseFrame &= !IsStopped();
 106       if (bParseFrame)
 107         command = m_currentframe;
 108     }
 109
 110     if (bParseFrame)
 111       ParseCommand(command);
 112
 113     m_controller->CheckKeypressTimeout();
 114
 115     if (!IsStopped())
 116       Sleep(5);
 117   }
 118
 119   return NULL;
 120 }
 121
 122 bool CCECProcessor::PowerOnDevices(cec_logical_address address /* = CECDEVICE_TV */)
 123 {
 124   if (!IsRunning())
 125     return false;
 126
 127   CStdString strLog;
 128   strLog.Format("<< powering on device with logical address %d", (int8_t)address);
 129   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 130
 131   cec_command command;
 132   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_IMAGE_VIEW_ON);
 133
 134   return Transmit(command);
 135 }
 136
 137 bool CCECProcessor::StandbyDevices(cec_logical_address address /* = CECDEVICE_BROADCAST */)
 138 {
 139   if (!IsRunning())
 140     return false;
 141
 142   CStdString strLog;
 143   strLog.Format("<< putting device with logical address %d in standby mode", (int8_t)address);
 144   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 145
 146   cec_command command;
 147   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_STANDBY);
 148
 149   return Transmit(command);
 150 }
 151
 152 bool CCECProcessor::SetActiveView(void)
 153 {
 154   if (!IsRunning())
 155     return false;
 156
 157   m_controller->AddLog(CEC_LOG_DEBUG, "<< setting active view");
 158
 159   cec_command command;
 160   cec_command::format(command, m_iLogicalAddress, CECDEVICE_BROADCAST, CEC_OPCODE_ACTIVE_SOURCE);
 161   command.parameters.push_back((m_iPhysicalAddress >> 8) & 0xFF);
 162   command.parameters.push_back(m_iPhysicalAddress & 0xFF);
 163
 164   return Transmit(command);
 165 }
 166
 167 bool CCECProcessor::SetInactiveView(void)
 168 {
 169   if (!IsRunning())
 170     return false;
 171
 172   m_controller->AddLog(CEC_LOG_DEBUG, "<< setting inactive view");
 173
 174   cec_command command;
 175   cec_command::format(command, m_iLogicalAddress, CECDEVICE_BROADCAST, CEC_OPCODE_INACTIVE_SOURCE);
 176   command.parameters.push_back((m_iPhysicalAddress >> 8) & 0xFF);
 177   command.parameters.push_back(m_iPhysicalAddress & 0xFF);
 178
 179   return Transmit(command);
 180 }
 181
 182 void CCECProcessor::LogOutput(const cec_command &data)
 183 {
 184   CStdString txStr = "transmit ";
 185   txStr.AppendFormat(" %02x", ((uint8_t)data.initiator << 4) + (uint8_t)data.destination);
 186   txStr.AppendFormat(" %02x", (uint8_t)data.opcode);
 187
 188   for (uint8_t iPtr = 0; iPtr < data.parameters.size; iPtr++)
 189     txStr.AppendFormat(" %02x", data.parameters[iPtr]);
 190   m_controller->AddLog(CEC_LOG_DEBUG, txStr.c_str());
 191 }
 192
 193 bool CCECProcessor::Transmit(const cec_command &data, bool bWaitForAck /* = true */)
 194 {
 195   LogOutput(data);
 196
 197   cec_adapter_message output;
 198   output.clear();
 199   CAdapterCommunication::FormatAdapterMessage(data, output);
 200
 201   return TransmitFormatted(output, bWaitForAck);
 202 }
 203
 204 bool CCECProcessor::SetLogicalAddress(cec_logical_address iLogicalAddress)
 205 {
 206   CStdString strLog;
 207   strLog.Format("<< setting logical address to %1x", iLogicalAddress);
 208   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 209
 210   m_iLogicalAddress = iLogicalAddress;
 211   return m_communication && m_communication->SetAckMask(0x1 << (uint8_t)m_iLogicalAddress);
 212 }
 213
 214 bool CCECProcessor::SetPhysicalAddress(uint16_t iPhysicalAddress)
 215 {
 216   CStdString strLog;
 217   strLog.Format("<< setting physical address to %2x", iPhysicalAddress);
 218   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 219
 220   m_iPhysicalAddress = iPhysicalAddress;
 221   return SetActiveView();
 222 }
 223
 224 bool CCECProcessor::TransmitFormatted(const cec_adapter_message &data, bool bWaitForAck /* = true */)
 225 {
 226   CLockObject lock(&m_mutex);
 227   if (!m_communication || !m_communication->Write(data))
 228     return false;
 229
 230   if (bWaitForAck)
 231   {
 232     uint64_t now = GetTimeMs();
 233     uint64_t target = now + 1000;
 234     bool bError(false);
 235     bool bGotAck(false);
 236
 237     while (!bGotAck && now < target)
 238     {
 239       bGotAck = WaitForAck(&bError, (uint32_t) (target - now));
 240       now = GetTimeMs();
 241
 242       if (bError && now < target)
 243       {
 244         m_controller->AddLog(CEC_LOG_ERROR, "retransmitting previous frame");
 245         if (!m_communication->Write(data))
 246           return false;
 247       }
 248     }
 249   }
 250
 251   return true;
 252 }
 253
 254 void CCECProcessor::TransmitAbort(cec_logical_address address, cec_opcode opcode, ECecAbortReason reason /* = CEC_ABORT_REASON_UNRECOGNIZED_OPCODE */)
 255 {
 256   m_controller->AddLog(CEC_LOG_DEBUG, "<< transmitting abort message");
 257
 258   cec_command command;
 259   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_FEATURE_ABORT);
 260   command.parameters.push_back((uint8_t)opcode);
 261   command.parameters.push_back((uint8_t)reason);
 262
 263   Transmit(command);
 264 }
 265
 266 void CCECProcessor::ReportCECVersion(cec_logical_address address /* = CECDEVICE_TV */)
 267 {
 268   m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting CEC version as 1.3a");
 269
 270   cec_command command;
 271   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_CEC_VERSION);
 272   command.parameters.push_back(CEC_VERSION_1_3A);
 273
 274   Transmit(command);
 275 }
 276
 277 void CCECProcessor::ReportPowerState(cec_logical_address address /*= CECDEVICE_TV */, bool bOn /* = true */)
 278 {
 279   if (bOn)
 280     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting \"On\" power status");
 281   else
 282     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting \"Off\" power status");
 283
 284   cec_command command;
 285   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_REPORT_POWER_STATUS);
 286   command.parameters.push_back(bOn ? (uint8_t) CEC_POWER_STATUS_ON : (uint8_t) CEC_POWER_STATUS_STANDBY);
 287
 288   Transmit(command);
 289 }
 290
 291 void CCECProcessor::ReportMenuState(cec_logical_address address /* = CECDEVICE_TV */, bool bActive /* = true */)
 292 {
 293   if (bActive)
 294     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting menu state as active");
 295   else
 296     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting menu state as inactive");
 297
 298   cec_command command;
 299   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_MENU_STATUS);
 300   command.parameters.push_back(bActive ? (uint8_t) CEC_MENU_STATE_ACTIVATED : (uint8_t) CEC_MENU_STATE_DEACTIVATED);
 301
 302   Transmit(command);
 303 }
 304
 305 void CCECProcessor::ReportVendorID(cec_logical_address address /* = CECDEVICE_TV */)
 306 {
 307   m_controller->AddLog(CEC_LOG_NOTICE, "<< vendor ID requested, feature abort");
 308   TransmitAbort(address, CEC_OPCODE_GIVE_DEVICE_VENDOR_ID);
 309 }
 310
 311 void CCECProcessor::ReportOSDName(cec_logical_address address /* = CECDEVICE_TV */)
 312 {
 313   const char *osdname = m_strDeviceName.c_str();
 314   CStdString strLog;
 315   strLog.Format("<< reporting OSD name as %s", osdname);
 316   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 317
 318   cec_command command;
 319   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_SET_OSD_NAME);
 320   for (unsigned int iPtr = 0; iPtr < strlen(osdname); iPtr++)
 321     command.parameters.push_back(osdname[iPtr]);
 322
 323   Transmit(command);
 324 }
 325
 326 void CCECProcessor::ReportPhysicalAddress(void)
 327 {
 328   CStdString strLog;
 329   strLog.Format("<< reporting physical address as %04x", m_iPhysicalAddress);
 330   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 331
 332   cec_command command;
 333   cec_command::format(command, m_iLogicalAddress, CECDEVICE_BROADCAST, CEC_OPCODE_REPORT_PHYSICAL_ADDRESS);
 334   command.parameters.push_back((uint8_t) ((m_iPhysicalAddress >> 8) & 0xFF));
 335   command.parameters.push_back((uint8_t) (m_iPhysicalAddress & 0xFF));
 336   command.parameters.push_back((uint8_t) (CEC_DEVICE_TYPE_PLAYBACK_DEVICE));
 337
 338   Transmit(command);
 339 }
 340
 341 void CCECProcessor::BroadcastActiveSource(void)
 342 {
 343   m_controller->AddLog(CEC_LOG_NOTICE, "<< broadcasting active source");
 344
 345   cec_command command;
 346   cec_command::format(command, m_iLogicalAddress, CECDEVICE_BROADCAST, CEC_OPCODE_ACTIVE_SOURCE);
 347   command.parameters.push_back((uint8_t) ((m_iPhysicalAddress >> 8) & 0xFF));
 348   command.parameters.push_back((uint8_t) (m_iPhysicalAddress & 0xFF));
 349
 350   Transmit(command);
 351 }
 352
 353 bool CCECProcessor::WaitForAck(bool *bError, uint32_t iTimeout /* = 1000 */)
 354 {
 355   bool bTransmitSucceeded = false, bEom = false;
 356   *bError = false;
 357
 358   int64_t iNow = GetTimeMs();
 359   int64_t iTargetTime = iNow + (uint64_t) iTimeout;
 360
 361   while (!bTransmitSucceeded && !*bError && (iTimeout == 0 || iNow < iTargetTime))
 362   {
 363     cec_adapter_message msg;
 364     msg.clear();
 365
 366     if (!m_communication->Read(msg, iTimeout > 0 ? (int32_t)(iTargetTime - iNow) : 1000))
 367     {
 368       iNow = GetTimeMs();
 369       continue;
 370     }
 371
 372     ParseMessage(msg, bError, &bTransmitSucceeded, &bEom, false);
 373     iNow = GetTimeMs();
 374   }
 375
 376   return bTransmitSucceeded && !*bError;
 377 }
 378
 379 void CCECProcessor::ParseMessage(cec_adapter_message &msg, bool *bError, bool *bTransmitSucceeded, bool *bEom, bool bProcessMessages /* = true */)
 380 {
 381   *bError = false;
 382   *bTransmitSucceeded = false;
 383   *bEom = false;
 384
 385   if (msg.empty())
 386     return;
 387
 388   CStdString logStr;
 389
 390   switch(msg.message())
 391   {
 392   case MSGCODE_NOTHING:
 393     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_NOTHING");
 394     break;
 395   case MSGCODE_TIMEOUT_ERROR:
 396   case MSGCODE_HIGH_ERROR:
 397   case MSGCODE_LOW_ERROR:
 398     {
 399       if (msg.message() == MSGCODE_TIMEOUT_ERROR)
 400         logStr = "MSGCODE_TIMEOUT";
 401       else if (msg.message() == MSGCODE_HIGH_ERROR)
 402         logStr = "MSGCODE_HIGH_ERROR";
 403       else
 404         logStr = "MSGCODE_LOW_ERROR";
 405
 406       int iLine      = (msg.size() >= 3) ? (msg[1] << 8) | (msg[2]) : 0;
 407       uint32_t iTime = (msg.size() >= 7) ? (msg[3] << 24) | (msg[4] << 16) | (msg[5] << 8) | (msg[6]) : 0;
 408       logStr.AppendFormat(" line:%i", iLine);
 409       logStr.AppendFormat(" time:%u", iTime);
 410       m_controller->AddLog(CEC_LOG_WARNING, logStr.c_str());
 411       *bError = true;
 412     }
 413     break;
 414   case MSGCODE_FRAME_START:
 415     {
 416       if (bProcessMessages)
 417       {
 418         logStr = "MSGCODE_FRAME_START";
 419         m_currentframe.clear();
 420         if (msg.size() >= 2)
 421         {
 422           logStr.AppendFormat(" initiator:%u destination:%u ack:%s %s", msg.initiator(), msg.destination(), msg.ack() ? "high" : "low", msg.eom() ? "eom" : "");
 423           m_currentframe.initiator   = msg.initiator();
 424           m_currentframe.destination = msg.destination();
 425           m_currentframe.ack         = msg.ack();
 426           m_currentframe.eom         = msg.eom();
 427         }
 428         m_controller->AddLog(CEC_LOG_DEBUG, logStr.c_str());
 429       }
 430       else
 431       {
 432         m_frameBuffer.Push(msg);
 433       }
 434     }
 435     break;
 436   case MSGCODE_FRAME_DATA:
 437     {
 438       if (bProcessMessages)
 439       {
 440         logStr = "MSGCODE_FRAME_DATA";
 441         if (msg.size() >= 2)
 442         {
 443           uint8_t iData = msg[1];
 444           logStr.AppendFormat(" %02x", iData);
 445           m_currentframe.push_back(iData);
 446           m_currentframe.eom = msg.eom();
 447         }
 448         m_controller->AddLog(CEC_LOG_DEBUG, logStr.c_str());
 449       }
 450       else
 451       {
 452         m_frameBuffer.Push(msg);
 453       }
 454
 455       *bEom = msg.eom();
 456     }
 457     break;
 458   case MSGCODE_COMMAND_ACCEPTED:
 459     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_COMMAND_ACCEPTED");
 460     break;
 461   case MSGCODE_TRANSMIT_SUCCEEDED:
 462     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_TRANSMIT_SUCCEEDED");
 463     *bTransmitSucceeded = true;
 464     break;
 465   case MSGCODE_RECEIVE_FAILED:
 466     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_RECEIVE_FAILED");
 467     *bError = true;
 468     break;
 469   case MSGCODE_COMMAND_REJECTED:
 470     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_COMMAND_REJECTED");
 471     *bError = true;
 472     break;
 473   case MSGCODE_TRANSMIT_FAILED_LINE:
 474     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_LINE");
 475     *bError = true;
 476     break;
 477   case MSGCODE_TRANSMIT_FAILED_ACK:
 478     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_ACK");
 479     *bError = true;
 480     break;
 481   case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
 482     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA");
 483     *bError = true;
 484     break;
 485   case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
 486     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE");
 487     *bError = true;
 488     break;
 489   default:
 490     break;
 491   }
 492 }
 493
 494 void CCECProcessor::ParseVendorId(cec_logical_address device, const cec_datapacket &data)
 495 {
 496   if (data.size < 3)
 497   {
 498     m_controller->AddLog(CEC_LOG_WARNING, "invalid vendor ID received");
 499     return;
 500   }
 501
 502   uint64_t iVendorId = ((uint64_t)data[0] << 3) +
 503                        ((uint64_t)data[1] << 2) +
 504                         (uint64_t)data[2];
 505
 506   m_vendorIds[(uint8_t)device]     = iVendorId;
 507   m_vendorClasses[(uint8_t)device] = data.size >= 4 ? data[3] : 0;
 508
 509   CStdString strLog;
 510   strLog.Format("device %d: vendor = %s (%lld) class = %2x", (uint8_t)device, CECVendorIdToString(m_vendorIds[(uint8_t)device]), iVendorId, m_vendorClasses[(uint8_t)device]);
 511   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 512 }
 513
 514 void CCECProcessor::ParseCommand(cec_command &command)
 515 {
 516   CStdString dataStr;
 517   dataStr.Format(">> received frame: initiator: %u destination: %u", command.initiator, command.destination);
 518   if (command.parameters.size > 1)
 519   {
 520     dataStr += " data:";
 521     for (uint8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
 522       dataStr.AppendFormat(" %02x", (unsigned int)command.parameters[iPtr]);
 523   }
 524   m_controller->AddLog(CEC_LOG_DEBUG, dataStr.c_str());
 525
 526   if (command.destination == m_iLogicalAddress)
 527   {
 528     switch(command.opcode)
 529     {
 530     case CEC_OPCODE_GIVE_PHYSICAL_ADDRESS:
 531       ReportPhysicalAddress();
 532       break;
 533     case CEC_OPCODE_GIVE_OSD_NAME:
 534       ReportOSDName(command.initiator);
 535       break;
 536     case CEC_OPCODE_GIVE_DEVICE_VENDOR_ID:
 537       ReportVendorID(command.initiator);
 538       break;
 539     case CEC_OPCODE_VENDOR_COMMAND_WITH_ID:
 540       ParseVendorId(command.initiator, command.parameters);
 541       TransmitAbort(command.initiator, CEC_OPCODE_VENDOR_COMMAND_WITH_ID);
 542       break;
 543     case CEC_OPCODE_GIVE_DECK_STATUS:
 544       // need to support opcodes play and deck control before doing anything with this
 545       TransmitAbort(command.initiator, CEC_OPCODE_GIVE_DECK_STATUS);
 546       break;
 547     case CEC_OPCODE_MENU_REQUEST:
 548       if (command.parameters[0] == CEC_MENU_REQUEST_TYPE_QUERY)
 549         ReportMenuState(command.initiator);
 550       break;
 551     case CEC_OPCODE_GIVE_DEVICE_POWER_STATUS:
 552       ReportPowerState(command.initiator);
 553       break;
 554     case CEC_OPCODE_GET_CEC_VERSION:
 555       ReportCECVersion(command.initiator);
 556       break;
 557     case CEC_OPCODE_USER_CONTROL_PRESSED:
 558       if (command.parameters.size > 0)
 559       {
 560         m_controller->AddKey();
 561
 562         if (command.parameters[0] <= CEC_USER_CONTROL_CODE_MAX)
 563           m_controller->SetCurrentButton((cec_user_control_code) command.parameters[0]);
 564       }
 565       break;
 566     case CEC_OPCODE_USER_CONTROL_RELEASE:
 567       m_controller->AddKey();
 568       break;
 569     case CEC_OPCODE_ROUTING_CHANGE:
 570       m_controller->SetActiveView();
 571       break;
 572     default:
 573       m_controller->AddCommand(command);
 574       break;
 575     }
 576   }
 577   else if (command.destination == CECDEVICE_BROADCAST)
 578   {
 579     CStdString strLog;
 580     if (command.opcode == CEC_OPCODE_REQUEST_ACTIVE_SOURCE)
 581     {
 582       strLog.Format(">> %i requests active source", (uint8_t) command.initiator);
 583       m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 584       BroadcastActiveSource();
 585     }
 586     else if (command.opcode == CEC_OPCODE_SET_STREAM_PATH)
 587     {
 588       if (command.parameters.size >= 2)
 589       {
 590         int streamaddr = ((int)command.parameters[0] << 8) | ((int)command.parameters[1]);
 591         strLog.Format(">> %i requests stream path from physical address %04x", command.initiator, streamaddr);
 592         m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 593         if (streamaddr == m_iPhysicalAddress)
 594           BroadcastActiveSource();
 595       }
 596     }
 597     else
 598     {
 599       m_controller->AddCommand(command);
 600     }
 601   }
 602   else
 603   {
 604     CStdString strLog;
 605     strLog.Format("ignoring frame: destination: %u != %u", command.destination, (uint8_t)m_iLogicalAddress);
 606     m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 607   }
 608 }
 609
 610 const char *CCECProcessor::CECVendorIdToString(const uint64_t iVendorId)
 611 {
 612   switch (iVendorId)
 613   {
 614   case CEC_VENDOR_SAMSUNG:
 615     return "Samsung";
 616   default:
 617     return "Unknown";
 618   }
 619 }