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   while (!IsStopped())
  90   {
  91     bool bParseFrame(false);
  92     cec_frame msg;
  93     msg.clear();
  94
  95     {
  96       CLockObject lock(&m_mutex);
  97       if (m_communication->IsOpen() && m_communication->Read(msg, 50))
  98         bParseFrame = ParseMessage(msg) && !IsStopped();
  99
 100       if (bParseFrame)
 101       {
 102         msg.clear();
 103         msg = m_currentframe;
 104       }
 105     }
 106
 107     if (bParseFrame)
 108       ParseCurrentFrame(msg);
 109
 110     m_controller->CheckKeypressTimeout();
 111
 112     if (!IsStopped())
 113       Sleep(5);
 114   }
 115
 116   return NULL;
 117 }
 118
 119 bool CCECProcessor::PowerOnDevices(cec_logical_address address /* = CECDEVICE_TV */)
 120 {
 121   if (!IsRunning())
 122     return false;
 123
 124   CStdString strLog;
 125   strLog.Format("<< powering on device with logical address %d", (int8_t)address);
 126   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 127   cec_frame frame;
 128   frame.clear();
 129
 130   frame.push_back(GetSourceDestination(address));
 131   frame.push_back((uint8_t) CEC_OPCODE_IMAGE_VIEW_ON);
 132   return Transmit(frame);
 133 }
 134
 135 bool CCECProcessor::StandbyDevices(cec_logical_address address /* = CECDEVICE_BROADCAST */)
 136 {
 137   if (!IsRunning())
 138     return false;
 139
 140   CStdString strLog;
 141   strLog.Format("<< putting device with logical address %d in standby mode", (int8_t)address);
 142   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 143   cec_frame frame;
 144   frame.clear();
 145
 146   frame.push_back(GetSourceDestination(address));
 147   frame.push_back((uint8_t) CEC_OPCODE_STANDBY);
 148   return Transmit(frame);
 149 }
 150
 151 bool CCECProcessor::SetActiveView(void)
 152 {
 153   if (!IsRunning())
 154     return false;
 155
 156   m_controller->AddLog(CEC_LOG_DEBUG, "<< setting active view");
 157   cec_frame frame;
 158   frame.clear();
 159
 160   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 161   frame.push_back((uint8_t) CEC_OPCODE_ACTIVE_SOURCE);
 162   frame.push_back((m_physicaladdress >> 8) & 0xFF);
 163   frame.push_back(m_physicaladdress & 0xFF);
 164   return Transmit(frame);
 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   cec_frame frame;
 174   frame.clear();
 175
 176   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 177   frame.push_back((uint8_t) CEC_OPCODE_INACTIVE_SOURCE);
 178   frame.push_back((m_physicaladdress >> 8) & 0xFF);
 179   frame.push_back(m_physicaladdress & 0xFF);
 180   return Transmit(frame);
 181 }
 182
 183 bool CCECProcessor::Transmit(const cec_frame &data, bool bWaitForAck /* = true */)
 184 {
 185   CStdString txStr = "transmit ";
 186   for (unsigned int i = 0; i < data.size(); i++)
 187     txStr.AppendFormat(" %02x", data[i]);
 188   m_controller->AddLog(CEC_LOG_DEBUG, txStr.c_str());
 189
 190   if (data.size() == 0)
 191   {
 192     m_controller->AddLog(CEC_LOG_WARNING, "transmit buffer is empty");
 193     return false;
 194   }
 195
 196   cec_frame output;
 197   output.clear();
 198
 199   //set ack polarity to high when transmitting to the broadcast address
 200   //set ack polarity low when transmitting to any other address
 201   output.push_back(MSGSTART);
 202   CAdapterCommunication::PushEscaped(output, MSGCODE_TRANSMIT_ACK_POLARITY);
 203
 204   if ((data[0] & 0xF) == 0xF)
 205     CAdapterCommunication::PushEscaped(output, CEC_TRUE);
 206   else
 207     CAdapterCommunication::PushEscaped(output, CEC_FALSE);
 208
 209   output.push_back(MSGEND);
 210
 211   for (int8_t i = 0; i < data.size(); i++)
 212   {
 213     output.push_back(MSGSTART);
 214
 215     if (i == data.size() - 1)
 216       CAdapterCommunication::PushEscaped(output, MSGCODE_TRANSMIT_EOM);
 217     else
 218       CAdapterCommunication::PushEscaped(output, MSGCODE_TRANSMIT);
 219
 220     CAdapterCommunication::PushEscaped(output, data[i]);
 221
 222     output.push_back(MSGEND);
 223   }
 224
 225   return TransmitFormatted(output, bWaitForAck);
 226 }
 227
 228 bool CCECProcessor::SetLogicalAddress(cec_logical_address iLogicalAddress)
 229 {
 230   CStdString strLog;
 231   strLog.Format("<< setting logical address to %d", iLogicalAddress);
 232   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 233
 234   m_iLogicalAddress = iLogicalAddress;
 235   return m_communication && m_communication->SetAckMask(0x1 << (uint8_t)m_iLogicalAddress);
 236 }
 237
 238 bool CCECProcessor::TransmitFormatted(const cec_frame &data, bool bWaitForAck /* = true */)
 239 {
 240   CLockObject lock(&m_mutex);
 241   if (!m_communication || !m_communication->Write(data))
 242     return false;
 243
 244   if (bWaitForAck)
 245   {
 246     uint64_t now = GetTimeMs();
 247     uint64_t target = now + 1000;
 248     bool bError(false);
 249     bool bGotAck(false);
 250
 251     while (!bGotAck && now < target)
 252     {
 253       bGotAck = WaitForAck(&bError, (uint64_t) (target - now));
 254       now = GetTimeMs();
 255
 256       if (bError && now < target)
 257       {
 258         m_controller->AddLog(CEC_LOG_ERROR, "retransmitting previous frame");
 259         if (!m_communication->Write(data))
 260           return false;
 261       }
 262     }
 263   }
 264
 265   return true;
 266 }
 267
 268 void CCECProcessor::TransmitAbort(cec_logical_address address, cec_opcode opcode, ECecAbortReason reason /* = CEC_ABORT_REASON_UNRECOGNIZED_OPCODE */)
 269 {
 270   m_controller->AddLog(CEC_LOG_DEBUG, "transmitting abort message");
 271   cec_frame frame;
 272   frame.clear();
 273
 274   frame.push_back(GetSourceDestination(address));
 275   frame.push_back((uint8_t) CEC_OPCODE_FEATURE_ABORT);
 276   frame.push_back((uint8_t) opcode);
 277   frame.push_back((uint8_t) reason);
 278   Transmit(frame);
 279 }
 280
 281 void CCECProcessor::ReportCECVersion(cec_logical_address address /* = CECDEVICE_TV */)
 282 {
 283   cec_frame frame;
 284   frame.clear();
 285
 286   m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting CEC version as 1.3a");
 287   frame.push_back(GetSourceDestination(address));
 288   frame.push_back((uint8_t) CEC_OPCODE_CEC_VERSION);
 289   frame.push_back((uint8_t) CEC_VERSION_1_3A);
 290   Transmit(frame);
 291 }
 292
 293 void CCECProcessor::ReportPowerState(cec_logical_address address /*= CECDEVICE_TV */, bool bOn /* = true */)
 294 {
 295   cec_frame frame;
 296   frame.clear();
 297
 298   if (bOn)
 299     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting \"On\" power status");
 300   else
 301     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting \"Off\" power status");
 302
 303   frame.push_back(GetSourceDestination(address));
 304   frame.push_back((uint8_t) CEC_OPCODE_REPORT_POWER_STATUS);
 305   frame.push_back(bOn ? (uint8_t) CEC_POWER_STATUS_ON : (uint8_t) CEC_POWER_STATUS_STANDBY);
 306   Transmit(frame);
 307 }
 308
 309 void CCECProcessor::ReportMenuState(cec_logical_address address /* = CECDEVICE_TV */, bool bActive /* = true */)
 310 {
 311   cec_frame frame;
 312   frame.clear();
 313
 314   if (bActive)
 315     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting menu state as active");
 316   else
 317     m_controller->AddLog(CEC_LOG_NOTICE, "<< reporting menu state as inactive");
 318
 319   frame.push_back(GetSourceDestination(address));
 320   frame.push_back((uint8_t) CEC_OPCODE_MENU_STATUS);
 321   frame.push_back(bActive ? (uint8_t) CEC_MENU_STATE_ACTIVATED : (uint8_t) CEC_MENU_STATE_DEACTIVATED);
 322   Transmit(frame);
 323 }
 324
 325 void CCECProcessor::ReportVendorID(cec_logical_address address /* = CECDEVICE_TV */)
 326 {
 327   m_controller->AddLog(CEC_LOG_NOTICE, "<< vendor ID requested, feature abort");
 328   TransmitAbort(address, CEC_OPCODE_GIVE_DEVICE_VENDOR_ID);
 329 }
 330
 331 void CCECProcessor::ReportOSDName(cec_logical_address address /* = CECDEVICE_TV */)
 332 {
 333   cec_frame frame;
 334   frame.clear();
 335
 336   const char *osdname = m_strDeviceName.c_str();
 337   CStdString strLog;
 338   strLog.Format("<< reporting OSD name as %s", osdname);
 339   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 340   frame.push_back(GetSourceDestination(address));
 341   frame.push_back((uint8_t) CEC_OPCODE_SET_OSD_NAME);
 342
 343   for (unsigned int i = 0; i < strlen(osdname); i++)
 344     frame.push_back(osdname[i]);
 345
 346   Transmit(frame);
 347 }
 348
 349 void CCECProcessor::ReportPhysicalAddress(void)
 350 {
 351   cec_frame frame;
 352   frame.clear();
 353
 354   CStdString strLog;
 355   strLog.Format("<< reporting physical address as %04x", m_physicaladdress);
 356   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 357   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 358   frame.push_back((uint8_t) CEC_OPCODE_REPORT_PHYSICAL_ADDRESS);
 359   frame.push_back((uint8_t) ((m_physicaladdress >> 8) & 0xFF));
 360   frame.push_back((uint8_t) (m_physicaladdress & 0xFF));
 361   frame.push_back((uint8_t) CEC_DEVICE_TYPE_PLAYBACK_DEVICE);
 362   Transmit(frame);
 363 }
 364
 365 void CCECProcessor::BroadcastActiveSource(void)
 366 {
 367   cec_frame frame;
 368   frame.clear();
 369
 370   m_controller->AddLog(CEC_LOG_NOTICE, "<< broadcasting active source");
 371   frame.push_back(GetSourceDestination(CECDEVICE_BROADCAST));
 372   frame.push_back((uint8_t) CEC_OPCODE_ACTIVE_SOURCE);
 373   frame.push_back((uint8_t) ((m_physicaladdress >> 8) & 0xFF));
 374   frame.push_back((uint8_t) (m_physicaladdress & 0xFF));
 375   Transmit(frame);
 376 }
 377
 378 uint8_t CCECProcessor::GetSourceDestination(cec_logical_address destination /* = CECDEVICE_BROADCAST */) const
 379 {
 380   return ((uint8_t)m_iLogicalAddress << 4) + (uint8_t)destination;
 381 }
 382
 383 bool CCECProcessor::WaitForAck(bool *bError, uint32_t iTimeout /* = 1000 */)
 384 {
 385   bool bGotAck(false);
 386   *bError = false;
 387
 388   int64_t iNow = GetTimeMs();
 389   int64_t iTargetTime = iNow + (uint64_t) iTimeout;
 390
 391   while (!bGotAck && !*bError && (iTimeout == 0 || iNow < iTargetTime))
 392   {
 393     cec_frame msg;
 394     msg.clear();
 395
 396     if (!m_communication->Read(msg, iTimeout > 0 ? iTargetTime - iNow : 1000))
 397     {
 398       iNow = GetTimeMs();
 399       continue;
 400     }
 401
 402     uint8_t iCode = msg[0] & ~(MSGCODE_FRAME_EOM | MSGCODE_FRAME_ACK);
 403
 404     switch (iCode)
 405     {
 406     case MSGCODE_COMMAND_ACCEPTED:
 407       m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_COMMAND_ACCEPTED");
 408       break;
 409     case MSGCODE_TRANSMIT_SUCCEEDED:
 410       m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_TRANSMIT_SUCCEEDED");
 411       bGotAck = true;
 412       break;
 413     case MSGCODE_RECEIVE_FAILED:
 414       m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_RECEIVE_FAILED");
 415       *bError = true;
 416       break;
 417     case MSGCODE_COMMAND_REJECTED:
 418       m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_COMMAND_REJECTED");
 419       *bError = true;
 420       break;
 421     case MSGCODE_TRANSMIT_FAILED_LINE:
 422       m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_LINE");
 423       *bError = true;
 424       break;
 425     case MSGCODE_TRANSMIT_FAILED_ACK:
 426       m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_ACK");
 427       *bError = true;
 428       break;
 429     case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
 430       m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA");
 431       *bError = true;
 432       break;
 433     case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
 434       m_controller->AddLog(CEC_LOG_WARNING, "MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE");
 435       *bError = true;
 436       break;
 437     default:
 438       m_frameBuffer.Push(msg);
 439       break;
 440     }
 441
 442     iNow = GetTimeMs();
 443   }
 444
 445   return bGotAck && !*bError;
 446 }
 447
 448 bool CCECProcessor::ParseMessage(cec_frame &msg)
 449 {
 450   bool bReturn(false);
 451
 452   if (msg.empty())
 453     return bReturn;
 454
 455   CStdString logStr;
 456
 457   switch(msg.message())
 458   {
 459   case MSGCODE_NOTHING:
 460     m_controller->AddLog(CEC_LOG_DEBUG, "MSGCODE_NOTHING");
 461     break;
 462   case MSGCODE_TIMEOUT_ERROR:
 463   case MSGCODE_HIGH_ERROR:
 464   case MSGCODE_LOW_ERROR:
 465     {
 466       if (msg.message() == MSGCODE_TIMEOUT_ERROR)
 467         logStr = "MSGCODE_TIMEOUT";
 468       else if (msg.message() == MSGCODE_HIGH_ERROR)
 469         logStr = "MSGCODE_HIGH_ERROR";
 470       else
 471         logStr = "MSGCODE_LOW_ERROR";
 472
 473       int iLine      = (msg.size() >= 3) ? (msg[1] << 8) | (msg[2]) : 0;
 474       uint32_t iTime = (msg.size() >= 7) ? (msg[3] << 24) | (msg[4] << 16) | (msg[5] << 8) | (msg[6]) : 0;
 475       logStr.AppendFormat(" line:%i", iLine);
 476       logStr.AppendFormat(" time:%u", iTime);
 477       m_controller->AddLog(CEC_LOG_WARNING, logStr.c_str());
 478     }
 479     break;
 480   case MSGCODE_FRAME_START:
 481     {
 482       logStr = "MSGCODE_FRAME_START";
 483       m_currentframe.clear();
 484       if (msg.size() >= 2)
 485       {
 486         logStr.AppendFormat(" initiator:%u destination:%u ack:%s %s", msg.initiator(), msg.destination(), msg.ack() ? "high" : "low", msg.eom() ? "eom" : "");
 487
 488         m_currentframe.push_back(msg[1]);
 489       }
 490       m_controller->AddLog(CEC_LOG_DEBUG, logStr.c_str());
 491     }
 492     break;
 493   case MSGCODE_FRAME_DATA:
 494     {
 495       logStr = "MSGCODE_FRAME_DATA";
 496       if (msg.size() >= 2)
 497       {
 498         uint8_t iData = msg[1];
 499         logStr.AppendFormat(" %02x", iData);
 500         m_currentframe.push_back(iData);
 501       }
 502       m_controller->AddLog(CEC_LOG_DEBUG, logStr.c_str());
 503     }
 504     if (msg.eom())
 505       bReturn = true;
 506     break;
 507   default:
 508     break;
 509   }
 510
 511   return bReturn;
 512 }
 513
 514 void CCECProcessor::ParseVendorId(cec_logical_address device, cec_frame data)
 515 {
 516   if (data.size() < 3)
 517   {
 518     m_controller->AddLog(CEC_LOG_WARNING, "invalid vendor ID received");
 519     return;
 520   }
 521
 522   uint64_t iVendorId = ((uint64_t)data[0] << 3) +
 523                        ((uint64_t)data[1] << 2) +
 524                         (uint64_t)data[2];
 525
 526   m_vendorIds[(uint8_t)device]     = iVendorId;
 527   m_vendorClasses[(uint8_t)device] = data.size() >= 4 ? data[3] : 0;
 528
 529   CStdString strLog;
 530   strLog.Format("device %d: vendor = %s (%lld) class = %2x", (uint8_t)device, CECVendorIdToString(m_vendorIds[(uint8_t)device]), iVendorId, m_vendorClasses[(uint8_t)device]);
 531   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 532 }
 533
 534 void CCECProcessor::ParseCurrentFrame(cec_frame &frame)
 535 {
 536   uint8_t initiator = frame[0] >> 4;
 537   uint8_t destination = frame[0] & 0xF;
 538
 539   CStdString dataStr;
 540   dataStr.Format(">> received frame: initiator: %u destination: %u", initiator, destination);
 541
 542   if (frame.size() > 1)
 543   {
 544     dataStr += " data:";
 545     for (unsigned int i = 1; i < frame.size(); i++)
 546       dataStr.AppendFormat(" %02x", frame[i]);
 547   }
 548   m_controller->AddLog(CEC_LOG_DEBUG, dataStr.c_str());
 549
 550   if (frame.size() <= 1)
 551     return;
 552
 553   cec_opcode opCode = (cec_opcode) frame[1];
 554   if (destination == (uint16_t) m_iLogicalAddress)
 555   {
 556     switch(opCode)
 557     {
 558     case CEC_OPCODE_GIVE_PHYSICAL_ADDRESS:
 559       ReportPhysicalAddress();
 560       break;
 561     case CEC_OPCODE_GIVE_OSD_NAME:
 562       ReportOSDName((cec_logical_address)initiator);
 563       break;
 564     case CEC_OPCODE_GIVE_DEVICE_VENDOR_ID:
 565       ReportVendorID((cec_logical_address)initiator);
 566       break;
 567     case CEC_OPCODE_VENDOR_COMMAND_WITH_ID:
 568       frame.shift(2);
 569       ParseVendorId((cec_logical_address)initiator, frame);
 570       TransmitAbort((cec_logical_address)initiator, CEC_OPCODE_VENDOR_COMMAND_WITH_ID);
 571       break;
 572     case CEC_OPCODE_GIVE_DECK_STATUS:
 573       // need to support opcodes play and deck control before doing anything with this
 574       TransmitAbort((cec_logical_address)initiator, CEC_OPCODE_GIVE_DECK_STATUS);
 575       break;
 576     case CEC_OPCODE_MENU_REQUEST:
 577       frame.shift(2);
 578       if (frame[0] == CEC_MENU_REQUEST_TYPE_QUERY)
 579         ReportMenuState((cec_logical_address)initiator);
 580       break;
 581     case CEC_OPCODE_GIVE_DEVICE_POWER_STATUS:
 582       ReportPowerState((cec_logical_address)initiator);
 583       SetActiveView();
 584       break;
 585     case CEC_OPCODE_GET_CEC_VERSION:
 586       ReportCECVersion((cec_logical_address)initiator);
 587       break;
 588     case CEC_OPCODE_USER_CONTROL_PRESSED:
 589       if (frame.size() > 2)
 590       {
 591         m_controller->AddKey();
 592
 593         if (frame[2] <= CEC_USER_CONTROL_CODE_MAX)
 594           m_controller->SetCurrentButton((cec_user_control_code) frame[2]);
 595       }
 596       break;
 597     case CEC_OPCODE_USER_CONTROL_RELEASE:
 598       m_controller->AddKey();
 599       break;
 600     default:
 601       frame.shift(2);
 602       m_controller->AddCommand((cec_logical_address) initiator, (cec_logical_address) destination, opCode, &frame);
 603       break;
 604     }
 605   }
 606   else if (destination == (uint8_t) CECDEVICE_BROADCAST)
 607   {
 608     CStdString strLog;
 609     if (opCode == CEC_OPCODE_REQUEST_ACTIVE_SOURCE)
 610     {
 611       strLog.Format(">> %i requests active source", initiator);
 612       m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 613       BroadcastActiveSource();
 614     }
 615     else if (opCode == CEC_OPCODE_SET_STREAM_PATH)
 616     {
 617       if (frame.size() >= 4)
 618       {
 619         int streamaddr = ((int)frame[2] << 8) | ((int)frame[3]);
 620         strLog.Format(">> %i requests stream path from physical address %04x", initiator, streamaddr);
 621         m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 622         if (streamaddr == m_physicaladdress)
 623           BroadcastActiveSource();
 624       }
 625     }
 626     else
 627     {
 628       cec_frame params = frame;
 629       frame.shift(2);
 630       m_controller->AddCommand((cec_logical_address) initiator, (cec_logical_address) destination, opCode, &params);
 631     }
 632   }
 633   else
 634   {
 635     CStdString strLog;
 636     strLog.Format("ignoring frame: destination: %u != %u", destination, (uint16_t)m_iLogicalAddress);
 637     m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 638   }
 639 }