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 "devices/CECBusDevice.h"
  37 #include "LibCEC.h"
  38 #include "util/StdString.h"
  39 #include "platform/timeutils.h"
  40
  41 using namespace CEC;
  42 using namespace std;
  43
  44 CCECProcessor::CCECProcessor(CLibCEC *controller, CAdapterCommunication *serComm, const char *strDeviceName, cec_logical_address iLogicalAddress /* = CECDEVICE_PLAYBACKDEVICE1 */, uint16_t iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS*/) :
  45     m_iLogicalAddress(iLogicalAddress),
  46     m_strDeviceName(strDeviceName),
  47     m_communication(serComm),
  48     m_controller(controller),
  49     m_bMonitor(false)
  50 {
  51   for (int iPtr = 0; iPtr < 16; iPtr++)
  52     m_busDevices[iPtr] = new CCECBusDevice(this, (cec_logical_address) iPtr, iPtr == iLogicalAddress ? iPhysicalAddress : 0);
  53 }
  54
  55 CCECProcessor::~CCECProcessor(void)
  56 {
  57   m_startCondition.Broadcast();
  58   StopThread();
  59   m_communication = NULL;
  60   m_controller = NULL;
  61   for (unsigned int iPtr = 0; iPtr < 16; iPtr++)
  62     delete m_busDevices[iPtr];
  63 }
  64
  65 bool CCECProcessor::Start(void)
  66 {
  67   CLockObject lock(&m_mutex);
  68   if (!m_communication || !m_communication->IsOpen())
  69   {
  70     m_controller->AddLog(CEC_LOG_ERROR, "connection is closed");
  71     return false;
  72   }
  73
  74   if (CreateThread())
  75   {
  76     if (!m_startCondition.Wait(&m_mutex))
  77     {
  78       m_controller->AddLog(CEC_LOG_ERROR, "could not create a processor thread");
  79       return false;
  80     }
  81     return true;
  82   }
  83   else
  84     m_controller->AddLog(CEC_LOG_ERROR, "could not create a processor thread");
  85
  86   return false;
  87 }
  88
  89 void *CCECProcessor::Process(void)
  90 {
  91   cec_command           command;
  92   CCECAdapterMessage    msg;
  93
  94   SetAckMask(0x1 << (uint8_t)m_iLogicalAddress);
  95
  96   {
  97     CLockObject lock(&m_mutex);
  98     m_controller->AddLog(CEC_LOG_DEBUG, "processor thread started");
  99     m_startCondition.Signal();
 100   }
 101
 102   while (!IsStopped())
 103   {
 104     bool bParseFrame(false);
 105     command.clear();
 106     msg.clear();
 107
 108     {
 109       CLockObject lock(&m_mutex);
 110       if (m_communication->IsOpen() && m_communication->Read(msg, 50))
 111       {
 112         m_controller->AddLog(msg.is_error() ? CEC_LOG_WARNING : CEC_LOG_DEBUG, msg.ToString());
 113         bParseFrame = ParseMessage(msg) && !IsStopped();
 114       }
 115
 116       if (bParseFrame)
 117         command = m_currentframe;
 118     }
 119
 120     if (bParseFrame)
 121       ParseCommand(command);
 122
 123     Sleep(5);
 124
 125     m_controller->CheckKeypressTimeout();
 126
 127     for (unsigned int iDevicePtr = 0; iDevicePtr < 16; iDevicePtr++)
 128       m_busDevices[iDevicePtr]->PollVendorId();
 129
 130     Sleep(5);
 131   }
 132
 133   return NULL;
 134 }
 135
 136 bool CCECProcessor::SetActiveView(void)
 137 {
 138   if (!IsRunning())
 139     return false;
 140
 141   if (m_iLogicalAddress != CECDEVICE_UNKNOWN && m_busDevices[m_iLogicalAddress])
 142     return m_busDevices[m_iLogicalAddress]->BroadcastActiveView();
 143   return false;
 144 }
 145
 146 bool CCECProcessor::SetInactiveView(void)
 147 {
 148   if (!IsRunning())
 149     return false;
 150
 151   if (m_iLogicalAddress != CECDEVICE_UNKNOWN && m_busDevices[m_iLogicalAddress])
 152     return m_busDevices[m_iLogicalAddress]->BroadcastInactiveView();
 153   return false;
 154 }
 155
 156 void CCECProcessor::LogOutput(const cec_command &data)
 157 {
 158   CStdString strTx;
 159   strTx.Format("<< %02x:%02x", ((uint8_t)data.initiator << 4) + (uint8_t)data.destination, (uint8_t)data.opcode);
 160
 161   for (uint8_t iPtr = 0; iPtr < data.parameters.size; iPtr++)
 162     strTx.AppendFormat(":%02x", data.parameters[iPtr]);
 163   m_controller->AddLog(CEC_LOG_TRAFFIC, strTx.c_str());
 164 }
 165
 166 bool CCECProcessor::SetLogicalAddress(cec_logical_address iLogicalAddress)
 167 {
 168   if (m_iLogicalAddress != iLogicalAddress)
 169   {
 170     CStdString strLog;
 171     strLog.Format("<< setting logical address to %1x", iLogicalAddress);
 172     m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 173     m_iLogicalAddress = iLogicalAddress;
 174     return SetAckMask(0x1 << (uint8_t)m_iLogicalAddress);
 175   }
 176
 177   return true;
 178 }
 179
 180 bool CCECProcessor::SetPhysicalAddress(uint16_t iPhysicalAddress)
 181 {
 182   if (m_iLogicalAddress != CECDEVICE_UNKNOWN && m_busDevices[m_iLogicalAddress])
 183   {
 184     m_busDevices[m_iLogicalAddress]->SetPhysicalAddress(iPhysicalAddress);
 185     return m_busDevices[m_iLogicalAddress]->BroadcastActiveView();
 186   }
 187   return false;
 188 }
 189
 190 bool CCECProcessor::SwitchMonitoring(bool bEnable)
 191 {
 192   CStdString strLog;
 193   strLog.Format("== %s monitoring mode ==", bEnable ? "enabling" : "disabling");
 194   m_controller->AddLog(CEC_LOG_NOTICE, strLog.c_str());
 195
 196   m_bMonitor = bEnable;
 197   if (bEnable)
 198     return SetAckMask(0);
 199   else
 200     return SetAckMask(0x1 << (uint8_t)m_iLogicalAddress);
 201 }
 202
 203 cec_version CCECProcessor::GetDeviceCecVersion(cec_logical_address iAddress)
 204 {
 205   return m_busDevices[iAddress]->GetCecVersion();
 206 }
 207
 208 bool CCECProcessor::GetDeviceMenuLanguage(cec_logical_address iAddress, cec_menu_language *language)
 209 {
 210   if (m_busDevices[iAddress])
 211   {
 212     *language = m_busDevices[iAddress]->GetMenuLanguage();
 213     return (strcmp(language->language, "???") != 0);
 214   }
 215   return false;
 216 }
 217
 218 uint64_t CCECProcessor::GetDeviceVendorId(cec_logical_address iAddress)
 219 {
 220   if (m_busDevices[iAddress])
 221     return m_busDevices[iAddress]->GetVendorId();
 222   return false;
 223 }
 224
 225 cec_power_status CCECProcessor::GetDevicePowerStatus(cec_logical_address iAddress)
 226 {
 227   if (m_busDevices[iAddress])
 228     return m_busDevices[iAddress]->GetPowerStatus();
 229   return CEC_POWER_STATUS_UNKNOWN;
 230 }
 231
 232 bool CCECProcessor::Transmit(const cec_command &data)
 233 {
 234   bool bReturn(false);
 235   LogOutput(data);
 236
 237   CCECAdapterMessage *output = new CCECAdapterMessage(data);
 238   bReturn = Transmit(output);
 239   delete output;
 240
 241   return bReturn;
 242 }
 243
 244 bool CCECProcessor::Transmit(CCECAdapterMessage *output)
 245 {
 246   bool bReturn(false);
 247   CLockObject lock(&m_mutex);
 248   {
 249     CLockObject msgLock(&output->mutex);
 250     if (!m_communication || !m_communication->Write(output))
 251       return bReturn;
 252     else
 253     {
 254       output->condition.Wait(&output->mutex, 1000);
 255       if (output->state != ADAPTER_MESSAGE_STATE_SENT)
 256       {
 257         m_controller->AddLog(CEC_LOG_ERROR, "command was not sent");
 258         return bReturn;
 259       }
 260     }
 261
 262     if (output->transmit_timeout > 0)
 263     {
 264       if ((bReturn = WaitForTransmitSucceeded(output->size(), output->transmit_timeout)) == false)
 265         m_controller->AddLog(CEC_LOG_ERROR, "did not receive ack");
 266     }
 267     else
 268       bReturn = true;
 269   }
 270
 271   return bReturn;
 272 }
 273
 274 void CCECProcessor::TransmitAbort(cec_logical_address address, cec_opcode opcode, ECecAbortReason reason /* = CEC_ABORT_REASON_UNRECOGNIZED_OPCODE */)
 275 {
 276   m_controller->AddLog(CEC_LOG_DEBUG, "<< transmitting abort message");
 277
 278   cec_command command;
 279   cec_command::format(command, m_iLogicalAddress, address, CEC_OPCODE_FEATURE_ABORT);
 280   command.parameters.push_back((uint8_t)opcode);
 281   command.parameters.push_back((uint8_t)reason);
 282
 283   Transmit(command);
 284 }
 285
 286 bool CCECProcessor::WaitForTransmitSucceeded(uint8_t iLength, uint32_t iTimeout /* = 1000 */)
 287 {
 288   bool bError(false);
 289   bool bTransmitSucceeded(false);
 290   uint8_t iPacketsLeft(iLength / 4);
 291
 292   int64_t iNow = GetTimeMs();
 293   int64_t iTargetTime = iNow + (uint64_t) iTimeout;
 294
 295   while (!bTransmitSucceeded && !bError && (iTimeout == 0 || iNow < iTargetTime))
 296   {
 297     CCECAdapterMessage msg;
 298
 299     if (!m_communication->Read(msg, iTimeout > 0 ? (int32_t)(iTargetTime - iNow) : 1000))
 300     {
 301       iNow = GetTimeMs();
 302       continue;
 303     }
 304
 305     if ((bError = msg.is_error()) == false)
 306     {
 307       m_controller->AddLog(bError ? CEC_LOG_WARNING : CEC_LOG_DEBUG, msg.ToString());
 308
 309       switch(msg.message())
 310       {
 311       case MSGCODE_COMMAND_ACCEPTED:
 312         if (iPacketsLeft > 0)
 313           iPacketsLeft--;
 314         break;
 315       case MSGCODE_TRANSMIT_SUCCEEDED:
 316         bTransmitSucceeded = (iPacketsLeft == 0);
 317         bError = !bTransmitSucceeded;
 318         break;
 319       default:
 320         ParseMessage(msg);
 321       }
 322
 323       iNow = GetTimeMs();
 324     }
 325   }
 326
 327   return bTransmitSucceeded && !bError;
 328 }
 329
 330 bool CCECProcessor::ParseMessage(const CCECAdapterMessage &msg)
 331 {
 332   bool bEom = false;
 333
 334   if (msg.empty())
 335     return bEom;
 336
 337   switch(msg.message())
 338   {
 339   case MSGCODE_FRAME_START:
 340     {
 341       m_currentframe.clear();
 342       if (msg.size() >= 2)
 343       {
 344         m_currentframe.initiator   = msg.initiator();
 345         m_currentframe.destination = msg.destination();
 346         m_currentframe.ack         = msg.ack();
 347         m_currentframe.eom         = msg.eom();
 348       }
 349     }
 350     break;
 351   case MSGCODE_FRAME_DATA:
 352     {
 353       if (msg.size() >= 2)
 354       {
 355         m_currentframe.push_back(msg[1]);
 356         m_currentframe.eom = msg.eom();
 357       }
 358       bEom = msg.eom();
 359     }
 360     break;
 361   default:
 362     break;
 363   }
 364
 365   return bEom;
 366 }
 367
 368 void CCECProcessor::ParseCommand(cec_command &command)
 369 {
 370   CStdString dataStr;
 371   dataStr.Format(">> %1x%1x:%02x", command.initiator, command.destination, command.opcode);
 372   for (uint8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
 373     dataStr.AppendFormat(":%02x", (unsigned int)command.parameters[iPtr]);
 374   m_controller->AddLog(CEC_LOG_TRAFFIC, dataStr.c_str());
 375
 376   if (!m_bMonitor)
 377     m_busDevices[(uint8_t)command.initiator]->HandleCommand(command);
 378 }
 379
 380 uint16_t CCECProcessor::GetPhysicalAddress(void) const
 381 {
 382   if (m_iLogicalAddress != CECDEVICE_UNKNOWN && m_busDevices[m_iLogicalAddress])
 383     return m_busDevices[m_iLogicalAddress]->GetPhysicalAddress();
 384   return false;
 385 }
 386
 387 void CCECProcessor::SetCurrentButton(cec_user_control_code iButtonCode)
 388 {
 389   m_controller->SetCurrentButton(iButtonCode);
 390 }
 391
 392 void CCECProcessor::AddCommand(const cec_command &command)
 393 {
 394   m_controller->AddCommand(command);
 395 }
 396
 397 void CCECProcessor::AddKey(void)
 398 {
 399   m_controller->AddKey();
 400 }
 401
 402 void CCECProcessor::AddLog(cec_log_level level, const CStdString &strMessage)
 403 {
 404   m_controller->AddLog(level, strMessage);
 405 }
 406
 407 bool CCECProcessor::SetAckMask(uint16_t iMask)
 408 {
 409   bool bReturn(false);
 410   CStdString strLog;
 411   strLog.Format("setting ackmask to %2x", iMask);
 412   m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
 413
 414   CCECAdapterMessage *output = new CCECAdapterMessage;
 415
 416   output->push_back(MSGSTART);
 417   output->push_escaped(MSGCODE_SET_ACK_MASK);
 418   output->push_escaped(iMask >> 8);
 419   output->push_escaped((uint8_t)iMask);
 420   output->push_back(MSGEND);
 421
 422   if ((bReturn = Transmit(output)) == false)
 423     m_controller->AddLog(CEC_LOG_ERROR, "could not set the ackmask");
 424
 425   delete output;
 426
 427   return bReturn;
 428 }