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_physicaladdress(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_physicaladdress >> 8) & 0xFF);
 162   command.parameters.push_back(m_physicaladdress & 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_physicaladdress >> 8) & 0xFF);
 177   command.parameters.push_back(m_physicaladdress & 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 %d", 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::TransmitFormatted(const cec_adapter_message &data, bool bWaitForAck /* = true */)
 215 {
 216   CLockObject lock(&m_mutex);
 217   if (!m_communication || !m_communication->Write(data))
 218     return false;
 219
 220   if (bWaitForAck)
 221   {
 222     uint64_t now = GetTimeMs();
 223     uint64_t target = now + 1000;
 224     bool bError(false);
 225     bool bGotAck(false);
 226
 227     while (!bGotAck && now < target)
 228     {
 229       bGotAck = WaitForAck(&bError, (uint32_t) (target - now));
 230       now = GetTimeMs();
 231
 232       if (bError && now < target)
 233       {
 234         m_controller->AddLog(CEC_LOG_ERROR, "retransmitting previous frame");
 235         if (!m_communication->Write(data))
 236           return false;
 237       }
 238     }
 239   }
 240
 241   return true;
 242 }
 243
 244 void CCECProcessor::TransmitAbort(cec_logical_address address, cec_opcode opcode, ECecAbortReason reason /* = CEC_ABORT_REASON_UNRECOGNIZED_OPCODE */)
 245 {
 246   m_controller->AddLog(CEC_LOG_DEBUG, "<< transmitting abort message");
 247
 248   cec_command command;
 249   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_FEATURE_ABORT);
 250   command.parameters.push_back((uint8_t)opcode);
 251   command.parameters.push_back((uint8_t)reason);
 252
 253   Transmit(command);
 254 }
 255
 256 void CCECProcessor::ReportCECVersion(cec_logical_address address /* = CECDEVICE_TV */)
 257 {
 258   m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting CEC version as 1.3a");
 259
 260   cec_command command;
 261   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_CEC_VERSION);
 262   command.parameters.push_back(CEC_VERSION_1_3A);
 263
 264   Transmit(command);
 265 }
 266
 267 void CCECProcessor::ReportPowerState(cec_logical_address address /*= CECDEVICE_TV */, bool bOn /* = true */)
 268 {
 269   if (bOn)
 270     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting \"On\" power status");
 271   else
 272     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting \"Off\" power status");
 273
 274   cec_command command;
 275   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_REPORT_POWER_STATUS);
 276   command.parameters.push_back(bOn ? (uint8_t) CEC_POWER_STATUS_ON : (uint8_t) CEC_POWER_STATUS_STANDBY);
 277
 278   Transmit(command);
 279 }
 280
 281 void CCECProcessor::ReportMenuState(cec_logical_address address /* = CECDEVICE_TV */, bool bActive /* = true */)
 282 {
 283   if (bActive)
 284     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting menu state as active");
 285   else
 286     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting menu state as inactive");
 287
 288   cec_command command;
 289   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_MENU_STATUS);
 290   command.parameters.push_back(bActive ? (uint8_t) CEC_MENU_STATE_ACTIVATED : (uint8_t) CEC_MENU_STATE_DEACTIVATED);
 291
 292   Transmit(command);
 293 }
 294
 295 void CCECProcessor::ReportVendorID(cec_logical_address address /* = CECDEVICE_TV */)
 296 {
 297   m_controller->AddLog(CEC_LOG_NOTICE, "<< vendor ID requested, feature abort");
 298   TransmitAbort(address, CEC_OPCODE_GIVE_DEVICE_VENDOR_ID);
 299 }
 300
 301 void CCECProcessor::ReportOSDName(cec_logical_address address /* = CECDEVICE_TV */)
 302 {
 303   const char *osdname = m_strDeviceName.c_str();
 304   CStdString strLog;
 305   strLog.Format("<< reporting OSD name as %s", osdname);
 306   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 307
 308   cec_command command;
 309   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_SET_OSD_NAME);
 310   for (unsigned int iPtr = 0; iPtr < strlen(osdname); iPtr++)
 311     command.parameters.push_back(osdname[iPtr]);
 312
 313   Transmit(command);
 314 }
 315
 316 void CCECProcessor::ReportPhysicalAddress(void)
 317 {
 318   CStdString strLog;
 319   strLog.Format("<< reporting physical address as %04x", m_physicaladdress);
 320   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 321
 322   cec_command command;
 323   cec_command::format(command, m_iLogicalAddress, CECDEVICE_BROADCAST, CEC_OPCODE_REPORT_PHYSICAL_ADDRESS);
 324   command.parameters.push_back((uint8_t) ((m_physicaladdress >> 8) & 0xFF));
 325   command.parameters.push_back((uint8_t) (m_physicaladdress & 0xFF));
 326   command.parameters.push_back((uint8_t) (CEC_DEVICE_TYPE_PLAYBACK_DEVICE));
 327
 328   Transmit(command);
 329 }
 330
 331 void CCECProcessor::BroadcastActiveSource(void)
 332 {
 333   m_controller->AddLog(CEC_LOG_NOTICE, "<< broadcasting active source");
 334
 335   cec_command command;
 336   cec_command::format(command, m_iLogicalAddress, CECDEVICE_BROADCAST, CEC_OPCODE_ACTIVE_SOURCE);
 337   command.parameters.push_back((uint8_t) ((m_physicaladdress >> 8) & 0xFF));
 338   command.parameters.push_back((uint8_t) (m_physicaladdress & 0xFF));
 339
 340   Transmit(command);
 341 }
 342
 343 bool CCECProcessor::WaitForAck(bool *bError, uint32_t iTimeout /* = 1000 */)
 344 {
 345   bool bTransmitSucceeded = false, bEom = false;
 346   *bError = false;
 347
 348   int64_t iNow = GetTimeMs();
 349   int64_t iTargetTime = iNow + (uint64_t) iTimeout;
 350
 351   while (!bTransmitSucceeded && !*bError && (iTimeout == 0 || iNow < iTargetTime))
 352   {
 353     cec_adapter_message msg;
 354     msg.clear();
 355
 356     if (!m_communication->Read(msg, iTimeout > 0 ? (int32_t)(iTargetTime - iNow) : 1000))
 357     {
 358       iNow = GetTimeMs();
 359       continue;
 360     }
 361
 362     ParseMessage(msg, bError, &bTransmitSucceeded, &bEom, false);
 363     iNow = GetTimeMs();
 364   }
 365
 366   return bTransmitSucceeded && !*bError;
 367 }
 368
 369 void CCECProcessor::ParseMessage(cec_adapter_message &msg, bool *bError, bool *bTransmitSucceeded, bool *bEom, bool bProcessMessages /* = true */)
 370 {
 371   *bError = false;
 372   *bTransmitSucceeded = false;
 373   *bEom = false;
 374
 375   if (msg.empty())
 376     return;
 377
 378   CStdString logStr;
 379
 380   switch(msg.message())
 381   {
 382   case MSGCODE_NOTHING:
 383     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_NOTHING");
 384     break;
 385   case MSGCODE_TIMEOUT_ERROR:
 386   case MSGCODE_HIGH_ERROR:
 387   case MSGCODE_LOW_ERROR:
 388     {
 389       if (msg.message() == MSGCODE_TIMEOUT_ERROR)
 390         logStr = "MSGCODE_TIMEOUT";
 391       else if (msg.message() == MSGCODE_HIGH_ERROR)
 392         logStr = "MSGCODE_HIGH_ERROR";
 393       else
 394         logStr = "MSGCODE_LOW_ERROR";
 395
 396       int iLine      = (msg.size() >= 3) ? (msg[1] << 8) | (msg[2]) : 0;
 397       uint32_t iTime = (msg.size() >= 7) ? (msg[3] << 24) | (msg[4] << 16) | (msg[5] << 8) | (msg[6]) : 0;
 398       logStr.AppendFormat(" line:%i", iLine);
 399       logStr.AppendFormat(" time:%u", iTime);
 400       m_controller->AddLog(CEC_LOG_WARNING, logStr.c_str());
 401       *bError = true;
 402     }
 403     break;
 404   case MSGCODE_FRAME_START:
 405     {
 406       if (bProcessMessages)
 407       {
 408         logStr = "MSGCODE_FRAME_START";
 409         m_currentframe.clear();
 410         if (msg.size() >= 2)
 411         {
 412           logStr.AppendFormat(" initiator:%u destination:%u ack:%s %s", msg.initiator(), msg.destination(), msg.ack() ? "high" : "low", msg.eom() ? "eom" : "");
 413           m_currentframe.initiator   = msg.initiator();
 414           m_currentframe.destination = msg.destination();
 415           m_currentframe.ack         = msg.ack();
 416           m_currentframe.eom         = msg.eom();
 417         }
 418         m_controller->AddLog(CEC_LOG_DEBUG, logStr.c_str());
 419       }
 420       else
 421       {
 422         m_frameBuffer.Push(msg);
 423       }
 424     }
 425     break;
 426   case MSGCODE_FRAME_DATA:
 427     {
 428       if (bProcessMessages)
 429       {
 430         logStr = "MSGCODE_FRAME_DATA";
 431         if (msg.size() >= 2)
 432         {
 433           uint8_t iData = msg[1];
 434           logStr.AppendFormat(" %02x", iData);
 435           m_currentframe.push_back(iData);
 436           m_currentframe.eom = msg.eom();
 437         }
 438         m_controller->AddLog(CEC_LOG_DEBUG, logStr.c_str());
 439       }
 440       else
 441       {
 442         m_frameBuffer.Push(msg);
 443       }
 444
 445       *bEom = msg.eom();
 446     }
 447     break;
 448   case MSGCODE_COMMAND_ACCEPTED:
 449     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_COMMAND_ACCEPTED");
 450     break;
 451   case MSGCODE_TRANSMIT_SUCCEEDED:
 452     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_TRANSMIT_SUCCEEDED");
 453     *bTransmitSucceeded = true;
 454     break;
 455   case MSGCODE_RECEIVE_FAILED:
 456     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_RECEIVE_FAILED");
 457     *bError = true;
 458     break;
 459   case MSGCODE_COMMAND_REJECTED:
 460     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_COMMAND_REJECTED");
 461     *bError = true;
 462     break;
 463   case MSGCODE_TRANSMIT_FAILED_LINE:
 464     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_LINE");
 465     *bError = true;
 466     break;
 467   case MSGCODE_TRANSMIT_FAILED_ACK:
 468     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_ACK");
 469     *bError = true;
 470     break;
 471   case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
 472     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA");
 473     *bError = true;
 474     break;
 475   case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
 476     m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE");
 477     *bError = true;
 478     break;
 479   default:
 480     break;
 481   }
 482 }
 483
 484 void CCECProcessor::ParseVendorId(cec_logical_address device, const cec_datapacket &data)
 485 {
 486   if (data.size < 3)
 487   {
 488     m_controller->AddLog(CEC_LOG_WARNING, "invalid vendor ID received");
 489     return;
 490   }
 491
 492   uint64_t iVendorId = ((uint64_t)data[0] << 3) +
 493                        ((uint64_t)data[1] << 2) +
 494                         (uint64_t)data[2];
 495
 496   m_vendorIds[(uint8_t)device]     = iVendorId;
 497   m_vendorClasses[(uint8_t)device] = data.size >= 4 ? data[3] : 0;
 498
 499   CStdString strLog;
 500   strLog.Format("device %d: vendor = %s (%lld) class = %2x", (uint8_t)device, CECVendorIdToString(m_vendorIds[(uint8_t)device]), iVendorId, m_vendorClasses[(uint8_t)device]);
 501   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 502 }
 503
 504 void CCECProcessor::ParseCommand(cec_command &command)
 505 {
 506   CStdString dataStr;
 507   dataStr.Format(">> received frame: initiator: %u destination: %u", command.initiator, command.destination);
 508   if (command.parameters.size > 1)
 509   {
 510     dataStr += " data:";
 511     for (uint8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
 512       dataStr.AppendFormat(" %02x", (unsigned int)command.parameters[iPtr]);
 513   }
 514   m_controller->AddLog(CEC_LOG_DEBUG, dataStr.c_str());
 515
 516   if (command.destination == m_iLogicalAddress)
 517   {
 518     switch(command.opcode)
 519     {
 520     case CEC_OPCODE_GIVE_PHYSICAL_ADDRESS:
 521       ReportPhysicalAddress();
 522       break;
 523     case CEC_OPCODE_GIVE_OSD_NAME:
 524       ReportOSDName(command.initiator);
 525       break;
 526     case CEC_OPCODE_GIVE_DEVICE_VENDOR_ID:
 527       ReportVendorID(command.initiator);
 528       break;
 529     case CEC_OPCODE_VENDOR_COMMAND_WITH_ID:
 530       ParseVendorId(command.initiator, command.parameters);
 531       TransmitAbort(command.initiator, CEC_OPCODE_VENDOR_COMMAND_WITH_ID);
 532       break;
 533     case CEC_OPCODE_GIVE_DECK_STATUS:
 534       // need to support opcodes play and deck control before doing anything with this
 535       TransmitAbort(command.initiator, CEC_OPCODE_GIVE_DECK_STATUS);
 536       break;
 537     case CEC_OPCODE_MENU_REQUEST:
 538       if (command.parameters[0] == CEC_MENU_REQUEST_TYPE_QUERY)
 539         ReportMenuState(command.initiator);
 540       break;
 541     case CEC_OPCODE_GIVE_DEVICE_POWER_STATUS:
 542       ReportPowerState(command.initiator);
 543       break;
 544     case CEC_OPCODE_GET_CEC_VERSION:
 545       ReportCECVersion(command.initiator);
 546       break;
 547     case CEC_OPCODE_USER_CONTROL_PRESSED:
 548       if (command.parameters.size > 0)
 549       {
 550         m_controller->AddKey();
 551
 552         if (command.parameters[0] <= CEC_USER_CONTROL_CODE_MAX)
 553           m_controller->SetCurrentButton((cec_user_control_code) command.parameters[0]);
 554       }
 555       break;
 556     case CEC_OPCODE_USER_CONTROL_RELEASE:
 557       m_controller->AddKey();
 558       break;
 559     case CEC_OPCODE_ROUTING_CHANGE:
 560       m_controller->SetActiveView();
 561       break;
 562     default:
 563       m_controller->AddCommand(command);
 564       break;
 565     }
 566   }
 567   else if (command.destination == CECDEVICE_BROADCAST)
 568   {
 569     CStdString strLog;
 570     if (command.opcode == CEC_OPCODE_REQUEST_ACTIVE_SOURCE)
 571     {
 572       strLog.Format(">> %i requests active source", (uint8_t) command.initiator);
 573       m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 574       BroadcastActiveSource();
 575     }
 576     else if (command.opcode == CEC_OPCODE_SET_STREAM_PATH)
 577     {
 578       if (command.parameters.size >= 2)
 579       {
 580         int streamaddr = ((int)command.parameters[0] << 8) | ((int)command.parameters[1]);
 581         strLog.Format(">> %i requests stream path from physical address %04x", command.initiator, streamaddr);
 582         m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 583         if (streamaddr == m_physicaladdress)
 584           BroadcastActiveSource();
 585       }
 586     }
 587     else
 588     {
 589       m_controller->AddCommand(command);
 590     }
 591   }
 592   else
 593   {
 594     CStdString strLog;
 595     strLog.Format("ignoring frame: destination: %u != %u", command.destination, (uint8_t)m_iLogicalAddress);
 596     m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 597   }
 598 }
 599
 600 const char *CCECProcessor::CECVendorIdToString(const uint64_t iVendorId)
 601 {
 602   switch (iVendorId)
 603   {
 604   case CEC_VENDOR_SAMSUNG:
 605     return "Samsung";
 606   default:
 607     return "Unknown";
 608   }
 609 }