playerradio.cc

   1 /*
   2     Copyright 2004-2006 Chris Tallon
   3
   4     This file is part of VOMP.
   5
   6     VOMP is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     VOMP is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with VOMP.  If not, see <https://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "playerradio.h"
  21
  22 #include "log.h"
  23 #include "audio.h"
  24 #include "video.h"
  25 #include "demuxervdr.h"
  26 #include "demuxerts.h"
  27 #include "input.h"
  28 #include "vdr.h"
  29 #include "message.h"
  30 #include "messagequeue.h"
  31
  32 // ----------------------------------- Called from outside, one offs or info funcs
  33
  34 PlayerRadio::PlayerRadio(MessageQueue* tmessageQueue, void* tmessageReceiver)
  35 : afeed(this)
  36 {
  37   messageQueue = tmessageQueue;
  38   messageReceiver = tmessageReceiver;
  39   audio = Audio::getInstance();
  40   logger = Log::getInstance();
  41   vdr = VDR::getInstance();
  42   initted = false;
  43   lengthBytes = 0;
  44   lengthFrames = 0;
  45   currentFrameNumber = 0;
  46   state = S_STOP;
  47
  48   startPTS = 0;
  49   lengthSeconds = 0;
  50
  51   threadBuffer = NULL;
  52
  53   blockSize = 10000;
  54   startupBlockSize = 20000;
  55
  56   Video::getInstance()->turnVideoOff();
  57 }
  58
  59 PlayerRadio::~PlayerRadio()
  60 {
  61   if (initted) shutdown();
  62 }
  63
  64 int PlayerRadio::init(ULLONG tlengthBytes, ULONG tlengthFrames, bool isPesRecording)
  65 {
  66   if (initted) return 0;
  67 #ifndef WIN32
  68   pthread_mutex_init(&mutex, NULL);
  69 #else
  70   mutex=CreateMutex(NULL,FALSE,NULL);
  71 #endif
  72
  73   if (isPesRecording)
  74     demuxer = new DemuxerVDR();
  75   else
  76     demuxer = new DemuxerTS();
  77   if (!demuxer) return 0;
  78
  79   if (!demuxer->init(this, audio, NULL, NULL, 0, 40000, 0))
  80   {
  81     logger->log("PlayerRadio", Log::ERR, "Demuxer failed to init");
  82     shutdown();
  83     return 0;
  84   }
  85
  86   afeed.init();
  87   audio->stop();
  88
  89   lengthBytes = tlengthBytes;
  90   lengthFrames = tlengthFrames;
  91
  92   logger->log("PlayerRadio", Log::DEBUG, "PlayerRadio has received length bytes of %llu", lengthBytes);
  93
  94   UINT thisRead = 0;
  95   int success;
  96
  97   UCHAR* buffer = vdr->getBlock(0, 10000, &thisRead);
  98   if (!buffer)
  99   {
 100     logger->log("PlayerRadio", Log::ERR, "Failed to get start block");
 101     shutdown();
 102     if (!vdr->isConnected()) doConnectionLost();
 103     return 0;
 104   }
 105
 106   success = demuxer->findPTS(buffer, thisRead, &startPTS);
 107   if (!success)
 108   {
 109     logger->log("PlayerRadio", Log::ERR, "Failed to get start PTS");
 110     free(buffer);
 111     shutdown();
 112     return 0;
 113   }
 114
 115   free(buffer);
 116
 117   if (!setLengthSeconds())
 118   {
 119     logger->log("PlayerRadio", Log::ERR, "Failed to setLengthSeconds");
 120     shutdown();
 121     return 0;
 122   }
 123
 124   initted = true;
 125   return 1;
 126 }
 127
 128 bool PlayerRadio::setLengthSeconds()
 129 {
 130   int success;
 131   ULLONG endPTS = 0;
 132   UINT thisRead = 0;
 133   UCHAR* buffer = vdr->getBlock(lengthBytes - 10000, 10000, &thisRead);
 134   if (!buffer)
 135   {
 136     logger->log("PlayerRadio", Log::ERR, "Failed to get end block");
 137     if (!vdr->isConnected()) doConnectionLost();
 138     return false;
 139   }
 140
 141   success = demuxer->findPTS(buffer, thisRead, &endPTS);
 142   free(buffer);
 143   if (!success)
 144   {
 145     logger->log("PlayerRadio", Log::ERR, "Failed to get end PTS");
 146     return false;
 147   }
 148
 149   if (startPTS < endPTS)
 150   {
 151     lengthSeconds = (endPTS - startPTS) / 90000;
 152   }
 153   else
 154   {
 155     lengthSeconds = (startPTS - endPTS) / 90000;
 156   }
 157
 158   return true;
 159 }
 160
 161 int PlayerRadio::shutdown()
 162 {
 163   if (!initted) return 0;
 164   switchState(S_STOP);
 165   initted = false;
 166
 167   delete demuxer;
 168   demuxer = NULL;
 169
 170 #ifdef WIN32
 171   CloseHandle(mutex);
 172 #endif
 173
 174   return 1;
 175 }
 176
 177
 178 void PlayerRadio::setCurrentFrameNumber(ULONG num)
 179 {
 180   currentFrameNumber = num;
 181 }
 182
 183 ULONG PlayerRadio::getLengthSeconds()
 184 {
 185   return lengthSeconds;
 186 }
 187
 188 ULONG PlayerRadio::getCurrentSeconds()
 189 {
 190   if (startup) return 0;
 191
 192   long long currentPTS = demuxer->getAudioPTS();
 193   currentPTS -= startPTS;
 194   if (currentPTS < 0) currentPTS += 8589934592ULL;
 195   ULONG ret = currentPTS / 90000;
 196   return ret;
 197 }
 198
 199 // ----------------------------------- Externally called events
 200
 201 void PlayerRadio::play()
 202 {
 203   if (!initted) return;
 204   if (state == S_PLAY) return;
 205   lock();
 206   switchState(S_PLAY);
 207   unLock();
 208 }
 209
 210
 211 void PlayerRadio::playpause()
 212 {
 213   if (!initted) return;
 214   lock();
 215   if (state==S_PLAY) {
 216           switchState(S_PAUSE_P);
 217   } else {
 218           switchState(S_PLAY);
 219   }
 220   unLock();
 221 }
 222
 223 void PlayerRadio::stop()
 224 {
 225   if (!initted) return;
 226   if (state == S_STOP) return;
 227   lock();
 228   logger->log("PlayerRadio", Log::DEBUG, "Stop called lock");
 229   switchState(S_STOP);
 230   unLock();
 231 }
 232
 233 void PlayerRadio::pause()
 234 {
 235   if (!initted) return;
 236   lock();
 237
 238   if (state == S_PAUSE_P)
 239   {
 240     switchState(S_PLAY);
 241   }
 242   else
 243   {
 244     switchState(S_PAUSE_P);
 245   }
 246
 247   unLock();
 248 }
 249
 250 void PlayerRadio::jumpToPercent(double percent)
 251 {
 252   lock();
 253   logger->log("PlayerRadio", Log::DEBUG, "JUMP TO %i%%", percent);
 254   ULONG newFrame = (ULONG)(percent * lengthFrames / 100);
 255   switchState(S_JUMP, newFrame);
 256   unLock();
 257 }
 258
 259 void PlayerRadio::skipForward(UINT seconds)
 260 {
 261   lock();
 262   logger->log("PlayerRadio", Log::DEBUG, "SKIP FORWARD %i SECONDS", seconds);
 263   ULONG currentSeconds = getCurrentSeconds();
 264   ULONG currentFrame = demuxer->getPacketNum();
 265
 266   if (currentSeconds == 0) { unLock(); return; } // div by zero
 267   if (currentFrame == 0) { unLock(); return; } // Current pos from demuxer is not valid
 268
 269   ULONG newFrame = currentFrame + (currentFrame * seconds / currentSeconds);
 270   if (newFrame > lengthFrames) { switchState(S_PLAY); unLock(); }
 271   else switchState(S_JUMP, newFrame);
 272   unLock();
 273 }
 274
 275 void PlayerRadio::skipBackward(UINT seconds)
 276 {
 277   lock();
 278   logger->log("PlayerRadio", Log::DEBUG, "SKIP BACKWARD %i SECONDS", seconds);
 279
 280   ULONG currentSeconds = getCurrentSeconds();
 281   ULONG currentFrame = demuxer->getPacketNum();
 282
 283   if (currentSeconds == 0) { unLock(); return; } // div by zero
 284   if (currentFrame == 0) { unLock(); return; } // Current pos from demuxer is not valid
 285
 286   ULONG newFrame;
 287   if ((UINT)seconds > currentSeconds)
 288     newFrame = 0;
 289   else
 290     newFrame = currentFrame - (currentFrame * seconds / currentSeconds);
 291
 292   switchState(S_JUMP, newFrame);
 293   unLock();
 294 }
 295
 296 // ----------------------------------- Implementations called events
 297
 298 void PlayerRadio::switchState(UCHAR toState, ULONG jumpToFrame)
 299 {
 300   if (!initted) return;
 301
 302   logger->log("PlayerRadio", Log::DEBUG, "Switch state from %u to %u", state, toState);
 303
 304   switch(state) // current state selector
 305   {
 306     case S_PLAY: // from S_PLAY -----------------------------------
 307     {
 308       switch(toState)
 309       {
 310         case S_PLAY: // to S_PLAY
 311         {
 312           return;
 313         }
 314         case S_PAUSE_P: // to S_PAUSE_P
 315         {
 316           audio->pause();
 317           state = S_PAUSE_P;
 318           return;
 319         }
 320         case S_STOP: // to S_STOP
 321         {
 322           afeed.stop();
 323           threadStop();
 324           audio->stop();
 325           audio->unPause();
 326           demuxer->reset();
 327           state = S_STOP;
 328           return;
 329         }
 330         case S_JUMP: // to S_JUMP
 331         {
 332           restartAtFrame(jumpToFrame);
 333           return;
 334         }
 335       }
 336     }
 337     case S_PAUSE_P: // from S_PAUSE_P -----------------------------------
 338     {
 339       switch(toState)
 340       {
 341         case S_PLAY: // to S_PLAY
 342         {
 343           audio->unPause();
 344           state = S_PLAY;
 345           return;
 346         }
 347         case S_PAUSE_P: // to S_PAUSE_P
 348         {
 349           return;
 350         }
 351         case S_STOP: // to S_STOP
 352         {
 353           afeed.stop();
 354           threadStop();
 355           audio->stop();
 356           audio->unPause();
 357           demuxer->reset();
 358           audio->systemMuteOff();
 359           state = S_STOP;
 360           return;
 361         }
 362         case S_JUMP: // to S_JUMP
 363         {
 364           state = S_PLAY;
 365           audio->unPause();
 366           restartAtFrame(jumpToFrame);
 367           return;
 368         }
 369       }
 370     }
 371     case S_STOP: // from S_STOP -----------------------------------
 372     {
 373       switch(toState)
 374       {
 375         case S_PLAY: // to S_PLAY
 376         {
 377           startup = true;
 378
 379           audio->reset();
 380           audio->setStreamType(Audio::MPEG2_PES);
 381           audio->systemMuteOff();
 382           demuxer->reset();
 383
 384           // FIXME use restartAtFrame here?
 385           if (currentFrameNumber > lengthFrames) currentFrameNumber = 0;
 386           demuxer->setPacketNum(currentFrameNumber);
 387           state = S_PLAY;
 388           threadStart();
 389           logger->log("PlayerRadio", Log::DEBUG, "Immediate play");
 390           afeed.start();
 391           audio->play();
 392
 393           return;
 394         }
 395         case S_PAUSE_P: // to S_PAUSE_P
 396         {
 397           return;
 398         }
 399         case S_STOP: // to S_STOP
 400         {
 401           return;
 402         }
 403         case S_JUMP: // to S_JUMP
 404         {
 405           return;
 406         }
 407       }
 408     }
 409     // case S_JUMP cannot be selected as a start state because it auto flips to play
 410   }
 411 }
 412
 413 // ----------------------------------- Internal functions
 414
 415 void PlayerRadio::lock()
 416 {
 417 #ifndef WIN32
 418   pthread_mutex_lock(&mutex);
 419   logger->log("PlayerRadio", Log::DEBUG, "LOCKED");
 420
 421 #else
 422    WaitForSingleObject(mutex, INFINITE);
 423 #endif
 424 }
 425
 426 void PlayerRadio::unLock()
 427 {
 428 #ifndef WIN32
 429   logger->log("PlayerRadio", Log::DEBUG, "UNLOCKING");
 430   pthread_mutex_unlock(&mutex);
 431 #else
 432    ReleaseMutex(mutex);
 433 #endif
 434 }
 435
 436 void PlayerRadio::restartAtFrame(ULONG newFrame)
 437 {
 438   afeed.stop();
 439   threadStop();
 440   audio->reset();
 441   audio->setStreamType(Audio::MPEG2_PES);
 442   demuxer->flush();
 443   currentFrameNumber = newFrame;
 444   demuxer->setPacketNum(newFrame);
 445   afeed.start();
 446   threadStart();
 447   audio->play();
 448   audio->systemMuteOff();
 449   audio->doMuting();
 450 }
 451
 452 void PlayerRadio::doConnectionLost()
 453 {
 454   logger->log("PlayerRadio", Log::DEBUG, "Connection lost, sending message");
 455   Message* m = new Message();
 456   m->to = messageReceiver;
 457   m->from = this;
 458   m->message = Message::PLAYER_EVENT;
 459   m->parameter = PlayerRadio::CONNECTION_LOST;
 460   messageQueue->postMessage(m);
 461 }
 462
 463 // ----------------------------------- Callback
 464
 465 void PlayerRadio::call(void* caller)
 466 {
 467   threadSignalNoLock();
 468 }
 469
 470 // ----------------------------------- Feed thread
 471
 472 void PlayerRadio::threadMethod()
 473 {
 474   if (state == S_PLAY) threadFeedPlay();
 475 }
 476
 477 void PlayerRadio::threadFeedPlay()
 478 {
 479   ULLONG feedPosition;
 480   UINT thisRead, writeLength, thisWrite, askFor;
 481   time_t lastRescan = time(NULL);
 482
 483   feedPosition = vdr->positionFromFrameNumber(currentFrameNumber);
 484   if (!vdr->isConnected()) { doConnectionLost(); return; }
 485   logger->log("PlayerRadio", Log::DEBUG, "startFeedPlay: wantedFrame %i goto %llu", currentFrameNumber, feedPosition);
 486
 487
 488   while(1)
 489   {
 490     thisRead = 0;
 491     writeLength = 0;
 492     thisWrite = 0;
 493
 494     threadCheckExit();
 495
 496     // If we havn't rescanned for a while..
 497     if ((lastRescan + 60) < time(NULL))
 498     {
 499       lengthBytes = vdr->rescanRecording(&lengthFrames);
 500       if (!vdr->isConnected()) { doConnectionLost(); return; }
 501       logger->log("PlayerRadio", Log::DEBUG, "Rescanned and reset length: %llu", lengthBytes);
 502       lastRescan = time(NULL);
 503
 504       if (!setLengthSeconds())
 505       {
 506         logger->log("PlayerRadio", Log::ERR, "Failed to setLengthSeconds in thread");
 507         return;
 508       }
 509     }
 510
 511     if (feedPosition >= lengthBytes) break;  // finished playback
 512
 513     if (startup)
 514     {
 515       if (startupBlockSize > lengthBytes)
 516         askFor = lengthBytes; // is a very small recording!
 517       else
 518         askFor = startupBlockSize; // normal, but a startup sized block to detect all the audio streams
 519     }
 520     else
 521     {
 522       if ((feedPosition + blockSize) > lengthBytes) // last block of recording
 523         askFor = lengthBytes - feedPosition;
 524       else // normal
 525         askFor = blockSize;
 526     }
 527
 528     threadBuffer = vdr->getBlock(feedPosition, askFor, &thisRead);
 529     feedPosition += thisRead;
 530
 531     if (!vdr->isConnected())
 532     {
 533       doConnectionLost();
 534       return;
 535     }
 536
 537     if (!threadBuffer) break;
 538
 539     if (startup)
 540     {
 541       int a_stream = demuxer->scan(threadBuffer, thisRead);
 542       demuxer->setAudioStream(a_stream);
 543       logger->log("PlayerRadio", Log::DEBUG, "Startup Audio stream chosen %x", a_stream);
 544       startup = false;
 545     }
 546
 547     threadCheckExit();
 548
 549     while(writeLength < thisRead)
 550     {
 551       thisWrite = demuxer->put(threadBuffer + writeLength, thisRead - writeLength);
 552       writeLength += thisWrite;
 553
 554       if (!thisWrite)
 555       {
 556         // demuxer is full and can't take anymore
 557         threadLock();
 558         threadWaitForSignal();
 559         threadUnlock();
 560       }
 561
 562       threadCheckExit();
 563     }
 564
 565     free(threadBuffer);
 566     threadBuffer = NULL;
 567
 568   }
 569
 570   // end of recording
 571   logger->log("PlayerRadio", Log::DEBUG, "Recording playback ends");
 572
 573   threadCheckExit();
 574
 575
 576   Message* m = new Message(); // Must be done after this thread finishes, and must break into master mutex
 577   m->to = messageReceiver;
 578   m->from = this;
 579   m->message = Message::PLAYER_EVENT;
 580   m->parameter = PlayerRadio::STOP_PLAYBACK;
 581   logger->log("PlayerRadio", Log::DEBUG, "Posting message to %p...", messageQueue);
 582   messageQueue->postMessage(m);
 583 }
 584
 585 void PlayerRadio::threadPostStopCleanup()
 586 {
 587   if (threadBuffer)
 588   {
 589     free(threadBuffer);
 590     threadBuffer = NULL;
 591   }
 592 }
 593