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, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #include "playerradio.h"
  22
  23 // ----------------------------------- Called from outside, one offs or info funcs
  24
  25 PlayerRadio::PlayerRadio(MessageQueue* tmessageQueue, void* tmessageReceiver, bool tIsRecording)
  26 : afeed(this)
  27 {
  28   messageQueue = tmessageQueue;
  29   messageReceiver = tmessageReceiver;
  30   audio = Audio::getInstance();
  31   logger = Log::getInstance();
  32   vdr = VDR::getInstance();
  33   initted = false;
  34   lengthBytes = 0;
  35   lengthFrames = 0;
  36   streamPos = 0;
  37   state = S_STOP;
  38
  39   startPTS = 0;
  40   lengthSeconds = 0;
  41
  42   isRecording = tIsRecording;
  43
  44   threadBuffer = NULL;
  45
  46   blockSize = 10000;
  47   startupBlockSize = 20000;
  48   preBufferSize = 20000;
  49 }
  50
  51 PlayerRadio::~PlayerRadio()
  52 {
  53   if (initted) shutdown();
  54 }
  55
  56 int PlayerRadio::init(ULLONG tlengthBytes, ULONG tlengthFrames)
  57 {
  58   if (initted) return 0;
  59 #ifndef WIN32
  60   pthread_mutex_init(&mutex, NULL);
  61 #else
  62   mutex=CreateMutex(NULL,FALSE,NULL);
  63 #endif
  64
  65   demuxer = new DemuxerVDR();
  66   if (!demuxer) return 0;
  67
  68   if (!demuxer->init(this, audio, NULL))
  69   {
  70     logger->log("PlayerRadio", Log::ERR, "Demuxer failed to init");
  71     shutdown();
  72     return 0;
  73   }
  74
  75   afeed.init();
  76   audio->stop();
  77
  78   lengthBytes = tlengthBytes;
  79   lengthFrames = tlengthFrames;
  80
  81   logger->log("PlayerRadio", Log::DEBUG, "PlayerRadio has received length bytes of %llu", lengthBytes);
  82
  83   UINT thisRead = 0;
  84   ULLONG endPTS = 0;
  85   int success;
  86
  87   threadBuffer = vdr->getBlock(0, 10000, &thisRead);
  88   if (!threadBuffer)
  89   {
  90     logger->log("PlayerRadio", Log::ERR, "Failed to get start block");
  91     shutdown();
  92     return 0;
  93   }
  94
  95   success = demuxer->findPTS(threadBuffer, thisRead, &startPTS);
  96   if (!success)
  97   {
  98     logger->log("PlayerRadio", Log::ERR, "Failed to get start PTS");
  99     shutdown();
 100     return 0;
 101   }
 102
 103   threadBuffer = vdr->getBlock(tlengthBytes - 10000, 10000, &thisRead);
 104   if (!threadBuffer)
 105   {
 106     logger->log("PlayerRadio", Log::ERR, "Failed to get end block");
 107     shutdown();
 108     return 0;
 109   }
 110
 111   success = demuxer->findPTS(threadBuffer, thisRead, &endPTS);
 112   if (!success)
 113   {
 114     logger->log("PlayerRadio", Log::ERR, "Failed to get end PTS");
 115     shutdown();
 116     return 0;
 117   }
 118
 119   logger->log("PlayerRadio", Log::DEBUG, "Start: %llu, End: %llu", startPTS, endPTS);
 120
 121   if (startPTS < endPTS)
 122   {
 123     lengthSeconds = (endPTS - startPTS) / 90000;
 124   }
 125   else
 126   {
 127     lengthSeconds = (startPTS - endPTS) / 90000;
 128   }
 129
 130   initted = true;
 131   return 1;
 132 }
 133
 134 int PlayerRadio::shutdown()
 135 {
 136   if (!initted) return 0;
 137   switchState(S_STOP);
 138   initted = false;
 139
 140   delete demuxer;
 141   demuxer = NULL;
 142
 143 #ifdef WIN32
 144   CloseHandle(mutex);
 145 #endif
 146
 147   return 1;
 148 }
 149
 150
 151 void PlayerRadio::setStartBytes(ULLONG startBytes)
 152 {
 153   streamPos = startBytes;
 154 }
 155
 156 ULONG PlayerRadio::getLengthSeconds()
 157 {
 158   return lengthSeconds;
 159 }
 160
 161 ULONG PlayerRadio::getCurrentSeconds()
 162 {
 163   if (startup) return 0;
 164   return 0;
 165 }
 166
 167 // ----------------------------------- Externally called events
 168
 169 void PlayerRadio::play()
 170 {
 171   if (!initted) return;
 172   if (state == S_PLAY) return;
 173   lock();
 174   switchState(S_PLAY);
 175   unLock();
 176 }
 177
 178 void PlayerRadio::stop()
 179 {
 180   if (!initted) return;
 181   if (state == S_STOP) return;
 182   lock();
 183   logger->log("PlayerRadio", Log::DEBUG, "Stop called lock");
 184   switchState(S_STOP);
 185   unLock();
 186 }
 187
 188 void PlayerRadio::pause()
 189 {
 190   if (!initted) return;
 191   lock();
 192
 193   if (state == S_PAUSE_P)
 194   {
 195     switchState(S_PLAY);
 196   }
 197   else
 198   {
 199     switchState(S_PAUSE_P);
 200   }
 201
 202   unLock();
 203 }
 204
 205 void PlayerRadio::jumpToPercent(int percent)
 206 {
 207   lock();
 208   logger->log("PlayerRadio", Log::DEBUG, "JUMP TO %i%%", percent);
 209   ULONG newFrame = percent * lengthFrames / 100;
 210   switchState(S_JUMP, newFrame);
 211   unLock();
 212 }
 213
 214 void PlayerRadio::skipForward(int seconds)
 215 {
 216   lock();
 217   logger->log("PlayerRadio", Log::DEBUG, "SKIP FORWARD %i SECONDS", seconds);
 218   ULONG newFrame = getCurrentSeconds();
 219   if (newFrame == 0) { unLock(); return; } // Current pos from demuxer is not valid
 220 //  newFrame += seconds * video->getFPS();
 221   if (newFrame > lengthFrames) { switchState(S_PLAY); unLock(); }
 222   else switchState(S_JUMP, newFrame);
 223   unLock();
 224 }
 225
 226 void PlayerRadio::skipBackward(int seconds)
 227 {
 228   lock();
 229   logger->log("PlayerRadio", Log::DEBUG, "SKIP BACKWARD %i SECONDS", seconds);
 230   long newFrame = getCurrentSeconds();
 231   if (newFrame == 0) { unLock(); return; } // Current pos from demuxer is not valid
 232 //  newFrame -= seconds * video->getFPS();
 233   if (newFrame < 0) newFrame = 0;
 234   switchState(S_JUMP, newFrame);
 235   unLock();
 236 }
 237
 238 // ----------------------------------- Implementations called events
 239
 240 void PlayerRadio::switchState(UCHAR toState, ULONG jumpFrame)
 241 {
 242   if (!initted) return;
 243
 244   logger->log("PlayerRadio", Log::DEBUG, "Switch state from %u to %u", state, toState);
 245
 246   switch(state) // current state selector
 247   {
 248     case S_PLAY: // from S_PLAY -----------------------------------
 249     {
 250       switch(toState)
 251       {
 252         case S_PLAY: // to S_PLAY
 253         {
 254           return;
 255         }
 256         case S_PAUSE_P: // to S_PAUSE_P
 257         {
 258           audio->pause();
 259           state = S_PAUSE_P;
 260           return;
 261         }
 262         case S_STOP: // to S_STOP
 263         {
 264           afeed.stop();
 265           threadStop();
 266           audio->stop();
 267           audio->unPause();
 268           demuxer->reset();
 269           state = S_STOP;
 270           return;
 271         }
 272         case S_JUMP: // to S_JUMP
 273         {
 274           restartAtFrame(jumpFrame);
 275           return;
 276         }
 277       }
 278     }
 279     case S_PAUSE_P: // from S_PAUSE_P -----------------------------------
 280     {
 281       switch(toState)
 282       {
 283         case S_PLAY: // to S_PLAY
 284         {
 285           audio->unPause();
 286           state = S_PLAY;
 287           return;
 288         }
 289         case S_PAUSE_P: // to S_PAUSE_P
 290         {
 291           return;
 292         }
 293         case S_STOP: // to S_STOP
 294         {
 295           afeed.stop();
 296           threadStop();
 297           audio->stop();
 298           audio->unPause();
 299           demuxer->reset();
 300           audio->systemMuteOff();
 301           state = S_STOP;
 302           return;
 303         }
 304         case S_JUMP: // to S_JUMP
 305         {
 306           state = S_PLAY;
 307           audio->unPause();
 308           restartAtFrame(jumpFrame);
 309           return;
 310         }
 311       }
 312     }
 313     case S_STOP: // from S_STOP -----------------------------------
 314     {
 315       switch(toState)
 316       {
 317         case S_PLAY: // to S_PLAY
 318         {
 319           startup = true;
 320
 321           audio->reset();
 322           audio->systemMuteOff();
 323           demuxer->reset();
 324           if (isRecording)
 325           {
 326             // FIXME use restartAtFrame here?
 327             if (currentFrameNumber > lengthFrames) currentFrameNumber = 0;
 328             demuxer->setFrameNum(currentFrameNumber);
 329           }
 330
 331           state = S_PLAY;
 332           threadStart();
 333
 334           if (isRecording)
 335           {
 336             logger->log("PlayerRadio", Log::DEBUG, "Immediate play");
 337             afeed.start();
 338             audio->play();
 339           }
 340           else // do prebuffering
 341           {
 342             logger->log("PlayerRadio", Log::DEBUG, "Prebuffering...");
 343             preBuffering = true;
 344           }
 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           return;
 354         }
 355         case S_JUMP: // to S_JUMP
 356         {
 357           return;
 358         }
 359       }
 360     }
 361     // case S_JUMP cannot be selected as a start state because it auto flips to play
 362   }
 363 }
 364
 365 // ----------------------------------- Internal functions
 366
 367 void PlayerRadio::lock()
 368 {
 369 #ifndef WIN32
 370   pthread_mutex_lock(&mutex);
 371   logger->log("PlayerRadio", Log::DEBUG, "LOCKED");
 372
 373 #else
 374    WaitForSingleObject(mutex, INFINITE);
 375 #endif
 376 }
 377
 378 void PlayerRadio::unLock()
 379 {
 380 #ifndef WIN32
 381   logger->log("PlayerRadio", Log::DEBUG, "UNLOCKING");
 382   pthread_mutex_unlock(&mutex);
 383 #else
 384    ReleaseMutex(mutex);
 385 #endif
 386 }
 387
 388 void PlayerRadio::restartAtFrame(ULONG newFrame)
 389 {
 390   afeed.stop();
 391   threadStop();
 392   audio->reset();
 393   demuxer->flush();
 394   currentFrameNumber = newFrame;
 395   demuxer->setFrameNum(newFrame);
 396   afeed.start();
 397   threadStart();
 398   audio->play();
 399   audio->systemMuteOff();
 400   audio->doMuting();
 401 }
 402
 403 void PlayerRadio::doConnectionLost()
 404 {
 405   logger->log("PlayerRadio", Log::DEBUG, "Connection lost, sending message");
 406   Message* m = new Message();
 407   m->to = messageReceiver;
 408   m->from = this;
 409   m->message = Message::PLAYER_EVENT;
 410   m->parameter = PlayerRadio::CONNECTION_LOST;
 411   messageQueue->postMessage(m);
 412 }
 413
 414 // ----------------------------------- Callback
 415
 416 void PlayerRadio::call(void* caller)
 417 {
 418   threadSignalNoLock();
 419 }
 420
 421 // ----------------------------------- Feed thread
 422
 423 void PlayerRadio::threadMethod()
 424 {
 425   if (isRecording)
 426   {
 427     if (state == S_PLAY) threadFeedPlay();
 428   }
 429   else
 430   {
 431     threadFeedLive();
 432   }
 433 }
 434
 435 void PlayerRadio::threadFeedLive()
 436 {
 437   UINT thisRead;
 438   UINT writeLength;
 439   UINT thisWrite;
 440   UINT preBufferTotal = 0;
 441
 442   UINT askFor;
 443   while(1)
 444   {
 445     thisRead = 0;
 446     writeLength = 0;
 447     thisWrite = 0;
 448
 449     threadCheckExit();
 450
 451     if (startup)
 452       askFor = startupBlockSize; // find audio streams sized block
 453     else
 454       askFor = blockSize; // normal
 455
 456     threadBuffer = vdr->getBlock(0, askFor, &thisRead);
 457
 458     if (!vdr->isConnected())
 459     {
 460       doConnectionLost();
 461       return;
 462     }
 463
 464     if (!threadBuffer) break;
 465
 466     if (startup)
 467     {
 468       int a_stream = demuxer->scan(threadBuffer, thisRead);
 469       demuxer->setAudioStream(a_stream);
 470       logger->log("PlayerRadio", Log::DEBUG, "Startup Audio stream chosen %x", a_stream);
 471       startup = false;
 472     }
 473
 474     if (preBuffering)
 475     {
 476       preBufferTotal += thisRead;
 477       if (preBufferTotal >= preBufferSize)
 478       {
 479         logger->log("PlayerRadio", Log::DEBUG, "Got >500K, prebuffering complete");
 480
 481         preBuffering = false;
 482         preBufferTotal = 0;
 483
 484         audio->play();
 485         afeed.start();
 486 //        unLock(); // thread will be locked by play until here
 487         // FIXME - see if this can segfault because it is starting threads out of the master mutex
 488       }
 489     }
 490
 491     threadCheckExit();
 492
 493     while(writeLength < thisRead)
 494     {
 495       thisWrite = demuxer->put(threadBuffer + writeLength, thisRead - writeLength);
 496       writeLength += thisWrite;
 497
 498       if (!thisWrite)
 499       {
 500         // demuxer is full and can't take anymore
 501         threadLock();
 502         threadWaitForSignal();
 503         threadUnlock();
 504       }
 505
 506       threadCheckExit();
 507     }
 508
 509     free(threadBuffer);
 510     threadBuffer = NULL;
 511
 512   }
 513
 514   logger->log("PlayerRadio", Log::DEBUG, "Live play failed to start or interrupted");
 515
 516   threadCheckExit();
 517
 518   Message* m = new Message(); // Must be done after this thread finishes, and must break into master mutex
 519   m->to = messageReceiver;
 520   m->from = this;
 521   m->message = Message::PLAYER_EVENT;
 522   m->parameter = PlayerRadio::STREAM_END;
 523   logger->log("PlayerRadio", Log::DEBUG, "Posting message to %p...", messageQueue);
 524   messageQueue->postMessage(m);
 525   logger->log("PlayerRadio", Log::DEBUG, "Message posted...");
 526 }
 527
 528 void PlayerRadio::threadFeedPlay()
 529 {
 530   ULLONG feedPosition;
 531   UINT thisRead, writeLength, thisWrite, askFor;
 532   time_t lastRescan = time(NULL);
 533
 534   feedPosition = vdr->positionFromFrameNumber(currentFrameNumber);
 535   if (!vdr->isConnected()) { doConnectionLost(); return; }
 536   logger->log("PlayerRadio", Log::DEBUG, "startFeedPlay: wantedframe %i goto %llu", currentFrameNumber, feedPosition);
 537
 538
 539   while(1)
 540   {
 541     thisRead = 0;
 542     writeLength = 0;
 543     thisWrite = 0;
 544
 545     threadCheckExit();
 546
 547     // If we havn't rescanned for a while..
 548     if ((lastRescan + 60) < time(NULL))
 549     {
 550       lengthBytes = vdr->rescanRecording(&lengthFrames);
 551       if (!vdr->isConnected()) { doConnectionLost(); return; }
 552       logger->log("PlayerRadio", Log::DEBUG, "Rescanned and reset length: %llu", lengthBytes);
 553       lastRescan = time(NULL);
 554     }
 555
 556     if (feedPosition >= lengthBytes) break;  // finished playback
 557
 558     if (startup)
 559     {
 560       if (startupBlockSize > lengthBytes)
 561         askFor = lengthBytes; // is a very small recording!
 562       else
 563         askFor = startupBlockSize; // normal, but a startup sized block to detect all the audio streams
 564     }
 565     else
 566     {
 567       if ((feedPosition + blockSize) > lengthBytes) // last block of recording
 568         askFor = lengthBytes - feedPosition;
 569       else // normal
 570         askFor = blockSize;
 571     }
 572
 573     threadBuffer = vdr->getBlock(feedPosition, askFor, &thisRead);
 574     feedPosition += thisRead;
 575
 576     if (!vdr->isConnected())
 577     {
 578       doConnectionLost();
 579       return;
 580     }
 581
 582     if (!threadBuffer) break;
 583
 584     if (startup)
 585     {
 586       int a_stream = demuxer->scan(threadBuffer, thisRead);
 587       demuxer->setAudioStream(a_stream);
 588       logger->log("PlayerRadio", Log::DEBUG, "Startup Audio stream chosen %x", a_stream);
 589       startup = false;
 590     }
 591
 592     threadCheckExit();
 593
 594     while(writeLength < thisRead)
 595     {
 596       thisWrite = demuxer->put(threadBuffer + writeLength, thisRead - writeLength);
 597       writeLength += thisWrite;
 598
 599       if (!thisWrite)
 600       {
 601         // demuxer is full and can't take anymore
 602         threadLock();
 603         threadWaitForSignal();
 604         threadUnlock();
 605       }
 606
 607       threadCheckExit();
 608     }
 609
 610     free(threadBuffer);
 611     threadBuffer = NULL;
 612
 613   }
 614
 615   // end of recording
 616   logger->log("PlayerRadio", Log::DEBUG, "Recording playback ends");
 617
 618   threadCheckExit();
 619
 620
 621   Message* m = new Message(); // Must be done after this thread finishes, and must break into master mutex
 622   m->to = messageReceiver;
 623   m->from = this;
 624   m->message = Message::PLAYER_EVENT;
 625   m->parameter = PlayerRadio::STOP_PLAYBACK;
 626   logger->log("PlayerRadio", Log::DEBUG, "Posting message to %p...", messageQueue);
 627   messageQueue->postMessage(m);
 628 }
 629
 630 void PlayerRadio::threadPostStopCleanup()
 631 {
 632   if (threadBuffer)
 633   {
 634     free(threadBuffer);
 635     threadBuffer = NULL;
 636   }
 637 }