platform/uiq3/engine/audio_mediaserver.cpp

   1 /*******************************************************************\r
   2  *\r
   3  *      File:           Audio_mediaserver.cpp\r
   4  *\r
   5  *      Author:         Peter van Sebille (peter@yipton.net)\r
   6  *\r
   7  *  Modified/adapted for picodriveN by notaz, 2006\r
   8  *\r
   9  *  (c) Copyright 2006, notaz\r
  10  *      (c) Copyright 2001, Peter van Sebille\r
  11  *      All Rights Reserved\r
  12  *\r
  13  *******************************************************************/\r
  14 \r
  15 #include "audio_mediaserver.h"\r
  16 #include "debug.h"\r
  17 \r
  18 //#define DEBUG_UNDERFLOWS\r
  19 //#undef DEBUGPRINT\r
  20 //#define DEBUGPRINT(x...)\r
  21 \r
  22 \r
  23 const TInt KUpdatesPerSec = 10;\r
  24 const TInt KBlockTime = 1000000 / KUpdatesPerSec;\r
  25 const TInt KMaxLag = 200000; // max sound lag, lower values increase chance of underflow\r
  26 const TInt KMaxUnderflows = 50; // max underflows/API errors we are going allow in a row (to prevent lockups)\r
  27 \r
  28 \r
  29 /*******************************************\r
  30  *\r
  31  * CGameAudioMS\r
  32  *\r
  33  *******************************************/\r
  34 \r
  35 CGameAudioMS::CGameAudioMS(TInt aRate, TBool aStereo, TInt aWritesPerSec, TInt aVolume)\r
  36 : iRate(aRate), iStereo(aStereo), iWritesPerSec(aWritesPerSec), iVolume(aVolume)\r
  37 {\r
  38 }\r
  39 \r
  40 \r
  41 CGameAudioMS* CGameAudioMS::NewL(TInt aRate, TBool aStereo, TInt aWritesPerSec, TInt aVolume)\r
  42 {\r
  43         DEBUGPRINT(_L("CGameAudioMS::NewL(%i, %i, %i, %i)"), aRate, aStereo, aWritesPerSec, aVolume);\r
  44         CGameAudioMS*           self = new(ELeave) CGameAudioMS(aRate, aStereo, aWritesPerSec, aVolume);\r
  45         CleanupStack::PushL(self);\r
  46         self->ConstructL();\r
  47         CleanupStack::Pop();            // self\r
  48         return self;\r
  49 }\r
  50 \r
  51 \r
  52 CGameAudioMS::~CGameAudioMS()\r
  53 {\r
  54         DEBUGPRINT(_L("CGameAudioMS::~CGameAudioMS()"));\r
  55         if(iMdaAudioOutputStream) {\r
  56                 iScheduler->Schedule(); // let it finish it's stuff\r
  57                 iMdaAudioOutputStream->Stop();\r
  58                 delete iMdaAudioOutputStream;\r
  59         }\r
  60         if(iServer) delete iServer;\r
  61 \r
  62         for (TInt i=0; i<KSoundBuffers; i++)\r
  63                 delete iSoundBuffers[i];\r
  64 \r
  65         // Polled AS\r
  66         //if(iScheduler) delete iScheduler;\r
  67 }\r
  68 \r
  69 \r
  70 void CGameAudioMS::ConstructL()\r
  71 {\r
  72         iServer = CMdaServer::NewL();\r
  73 \r
  74         // iScheduler = CPolledActiveScheduler::NewL();\r
  75         iScheduler = CPolledActiveScheduler::Instance();\r
  76 \r
  77         switch(iRate) {\r
  78                 case 11025: iMdaAudioDataSettings.iSampleRate = TMdaAudioDataSettings::ESampleRate11025Hz; break;\r
  79                 case 16000: iMdaAudioDataSettings.iSampleRate = TMdaAudioDataSettings::ESampleRate16000Hz; break;\r
  80                 case 22050: iMdaAudioDataSettings.iSampleRate = TMdaAudioDataSettings::ESampleRate22050Hz; break;\r
  81                 case 44100: iMdaAudioDataSettings.iSampleRate = TMdaAudioDataSettings::ESampleRate44100Hz; break;\r
  82                 default:    iMdaAudioDataSettings.iSampleRate = TMdaAudioDataSettings::ESampleRate8000Hz;  break;\r
  83         }\r
  84 \r
  85         iMdaAudioDataSettings.iChannels   = (iStereo) ? TMdaAudioDataSettings::EChannelsStereo : TMdaAudioDataSettings::EChannelsMono;\r
  86         iMdaAudioDataSettings.iCaps       = TMdaAudioDataSettings::ESampleRateFixed | iMdaAudioDataSettings.iSampleRate;\r
  87         iMdaAudioDataSettings.iFlags      = TMdaAudioDataSettings::ENoNetworkRouting;\r
  88 \r
  89         iMaxWriteSamples = iRate / iWritesPerSec;\r
  90         if (iRate % iWritesPerSec)\r
  91                 iMaxWriteSamples++;\r
  92         int bufferedFrames = iWritesPerSec / KUpdatesPerSec;\r
  93 \r
  94         iBufferSize = iMaxWriteSamples * (iStereo ? 4 : 2);\r
  95         iBufferSize *= bufferedFrames;\r
  96         for (TInt i=0 ; i<KSoundBuffers ; i++)\r
  97         {\r
  98                 iSoundBuffers[i] = HBufC8::NewL(iBufferSize);\r
  99                 iSoundBuffers[i]->Des().FillZ  (iBufferSize);\r
 100         }\r
 101 \r
 102         iCurrentBuffer = 0;\r
 103         iCurrentBufferSize = 0;\r
 104 \r
 105         DEBUGPRINT(_L("sound: iMaxWriteSamples: %i, iBufferSize: %i"), iMaxWriteSamples, iBufferSize);\r
 106 \r
 107         // here we actually test if we can create and open CMdaAudioOutputStream at all, but really create and use it later.\r
 108         iMdaAudioOutputStream = CMdaAudioOutputStream::NewL(iListener, iServer);\r
 109         if (iMdaAudioOutputStream) {\r
 110                 if (iVolume < 0 || iVolume > iMdaAudioOutputStream->MaxVolume())\r
 111                         iVolume = iMdaAudioOutputStream->MaxVolume();\r
 112                 delete iMdaAudioOutputStream;\r
 113                 iMdaAudioOutputStream = 0;\r
 114         }\r
 115 }\r
 116 \r
 117 // returns a pointer to buffer for next frame,\r
 118 // to be used when iSoundBuffers are used directly\r
 119 TInt16 *CGameAudioMS::NextFrameL(TInt aPcmFrames)\r
 120 {\r
 121         TInt mul = iStereo ? 4 : 2;\r
 122         TInt bytes = aPcmFrames * mul;\r
 123         iCurrentPosition   += bytes / 2;\r
 124         iCurrentBufferSize += bytes;\r
 125 \r
 126         if (aPcmFrames > iMaxWriteSamples) {\r
 127                 DEBUGPRINT(_L("too many samples: %i > %i"), aPcmFrames, iMaxWriteSamples);\r
 128         }\r
 129 \r
 130         if (iCurrentBufferSize + iMaxWriteSamples * mul > iBufferSize)\r
 131         {\r
 132                 //DEBUGPRINT(_L("write on iCurrentBufferSize %i"), iCurrentBufferSize);\r
 133                 WriteBlockL();\r
 134         }\r
 135 \r
 136         iScheduler->Schedule();\r
 137 \r
 138         if(iListener.iUnderflowed) {\r
 139                 if(iListener.iUnderflowed > KMaxUnderflows) {\r
 140                         delete iMdaAudioOutputStream;\r
 141                         iMdaAudioOutputStream = 0;\r
 142                         return 0;\r
 143                 }\r
 144                 UnderflowedL(); // not again!\r
 145         }\r
 146 \r
 147         return iCurrentPosition;\r
 148 }\r
 149 \r
 150 void CGameAudioMS::WriteBlockL()\r
 151 {\r
 152         iScheduler->Schedule();\r
 153         // do not write until stream is open\r
 154         if(!iListener.iIsOpen) WaitForOpenToCompleteL();\r
 155         //if(!iListener.iHasCopied) WaitForCopyToCompleteL(); // almost never happens anyway and sometimes even deadlocks?\r
 156         //iListener.iHasCopied = EFalse;\r
 157         \r
 158 \r
 159         if(!iListener.iUnderflowed) {\r
 160                 TInt64 delta;\r
 161                 // don't write if sound is lagging too much\r
 162                 delta = iTime - iMdaAudioOutputStream->Position().Int64();\r
 163                 if (delta > MAKE_TINT64(0, KMaxLag))\r
 164                         // another query sometimes returns very different result\r
 165                         delta = iTime - iMdaAudioOutputStream->Position().Int64();\r
 166 \r
 167                 if(delta <= MAKE_TINT64(0, KMaxLag)) {\r
 168                         //RDebug::Print(_L("delta: %i"), iTime.Low() - iMdaAudioOutputStream->Position().Int64().Low());\r
 169                         iSoundBuffers[iCurrentBuffer]->Des().SetLength(iCurrentBufferSize);\r
 170                         iMdaAudioOutputStream->WriteL(*iSoundBuffers[iCurrentBuffer]);\r
 171                         iTime += KBlockTime;\r
 172                 } else {\r
 173                         DEBUGPRINT(_L("lag: %i"), I64LOW(delta));\r
 174                 }\r
 175         }\r
 176 \r
 177         if (++iCurrentBuffer == KSoundBuffers)\r
 178                 iCurrentBuffer = 0;\r
 179         iSoundBuffers[iCurrentBuffer]->Des().SetMax();\r
 180         iCurrentPosition = (TInt16*) iSoundBuffers[iCurrentBuffer]->Ptr();\r
 181         iCurrentBufferSize = 0;\r
 182 }\r
 183 \r
 184 void CGameAudioMS::Pause()\r
 185 {\r
 186         if(!iMdaAudioOutputStream) return;\r
 187 \r
 188         iScheduler->Schedule(); // let it finish it's stuff\r
 189         iMdaAudioOutputStream->Stop();\r
 190         delete iMdaAudioOutputStream;\r
 191         iMdaAudioOutputStream = 0;\r
 192 }\r
 193 \r
 194 // call this before doing any playback!\r
 195 TInt16 *CGameAudioMS::ResumeL()\r
 196 {\r
 197         DEBUGPRINT(_L("CGameAudioMS::Resume()"));\r
 198         iScheduler->Schedule();\r
 199 \r
 200         // we act a bit strange here: simulate buffer underflow, which actually starts audio\r
 201         iListener.iIsOpen = ETrue;\r
 202         iListener.iUnderflowed = 1;\r
 203         iListener.iLastError = 0;\r
 204         iCurrentBufferSize = 0;\r
 205         iCurrentPosition = (TInt16*) iSoundBuffers[iCurrentBuffer]->Ptr();\r
 206         return iCurrentPosition;\r
 207 }\r
 208 \r
 209 // handles underflow condition\r
 210 void CGameAudioMS::UnderflowedL()\r
 211 {\r
 212 #ifdef DEBUG_UNDERFLOWS\r
 213         DEBUGPRINT(_L("UnderflowedL()"));\r
 214 #endif\r
 215 \r
 216         if (iListener.iLastError != KErrUnderflow)\r
 217         {\r
 218                 // recreate the stream\r
 219                 //iMdaAudioOutputStream->Stop();\r
 220                 if(iMdaAudioOutputStream) delete iMdaAudioOutputStream;\r
 221                 iMdaAudioOutputStream = CMdaAudioOutputStream::NewL(iListener, iServer);\r
 222                 iMdaAudioOutputStream->Open(&iMdaAudioDataSettings);\r
 223                 iMdaAudioOutputStream->SetAudioPropertiesL(iMdaAudioDataSettings.iSampleRate, iMdaAudioDataSettings.iChannels);\r
 224                 iMdaAudioOutputStream->SetVolume(iVolume); // new in UIQ3\r
 225 \r
 226                 iListener.iIsOpen = EFalse;   // wait for it to open\r
 227                 //iListener.iHasCopied = ETrue; // but don't wait for last copy to complete\r
 228                 // let it open and feed some stuff to make it happy\r
 229                 User::After(0);\r
 230                 iScheduler->Schedule();\r
 231                 iListener.iLastError = 0;\r
 232                 if(!iListener.iIsOpen) WaitForOpenToCompleteL();\r
 233         } else {\r
 234                 iListener.iLastError = iListener.iUnderflowed = 0;\r
 235         }\r
 236         iTime = iMdaAudioOutputStream->Position().Int64();\r
 237 }\r
 238 \r
 239 void CGameAudioMS::WaitForOpenToCompleteL()\r
 240 {\r
 241         DEBUGPRINT(_L("CGameAudioMS::WaitForOpenToCompleteL"));\r
 242         TInt    count = 20;             // 2 seconds\r
 243         TInt    waitPeriod = 100 * 1000;\r
 244 \r
 245         if(!iListener.iIsOpen) {\r
 246                 // it is often enough to do this\r
 247                 User::After(0);\r
 248                 iScheduler->Schedule();\r
 249         }\r
 250         while (!iListener.iIsOpen && --count)\r
 251         {\r
 252                 User::After(waitPeriod);\r
 253                 iScheduler->Schedule();\r
 254         }\r
 255         if (!iListener.iIsOpen)\r
 256                 User::LeaveIfError(KErrNotSupported);\r
 257 }\r
 258 \r
 259 TInt CGameAudioMS::ChangeVolume(TInt aUp)\r
 260 {\r
 261         //DEBUGPRINT(_L("CGameAudioMS::ChangeVolume(%i)"), aUp);\r
 262 \r
 263         if (iMdaAudioOutputStream) {\r
 264                 if (aUp) {\r
 265                         iVolume += 5;\r
 266                         if (iVolume > iMdaAudioOutputStream->MaxVolume())\r
 267                                 iVolume = iMdaAudioOutputStream->MaxVolume();\r
 268                 } else {\r
 269                         iVolume -= 5;\r
 270                         if (iVolume < 0) iVolume = 0;\r
 271                 }\r
 272                 iMdaAudioOutputStream->SetVolume(iVolume);\r
 273         }\r
 274 \r
 275         return iVolume;\r
 276 }\r
 277 \r
 278 void TGameAudioEventListener::MaoscOpenComplete(TInt aError)\r
 279 {\r
 280 #ifdef DEBUG_UNDERFLOWS\r
 281         DEBUGPRINT(_L("CGameAudioMS::MaoscOpenComplete, error=%d"), aError);\r
 282 #endif\r
 283 \r
 284         iIsOpen = ETrue;\r
 285         if(aError) {\r
 286                 iLastError = aError;\r
 287                 iUnderflowed++;\r
 288         }\r
 289         else iUnderflowed = 0;\r
 290 }\r
 291 \r
 292 void TGameAudioEventListener::MaoscBufferCopied(TInt aError, const TDesC8& aBuffer)\r
 293 {\r
 294         if (aError)\r
 295                 DEBUGPRINT(_L("CGameAudioMS::MaoscBufferCopied, error=%d"), aError);\r
 296 \r
 297 //      iHasCopied = ETrue;\r
 298 \r
 299         if(aError) { // shit!\r
 300                 iLastError = aError;\r
 301                 iUnderflowed++;\r
 302         }\r
 303 }\r
 304 \r
 305 void TGameAudioEventListener::MaoscPlayComplete(TInt aError)\r
 306 {\r
 307 #ifdef DEBUG_UNDERFLOWS\r
 308         DEBUGPRINT(_L("CGameAudioMS::MaoscPlayComplete: %i"), aError);\r
 309 #endif\r
 310         if(aError) {\r
 311                 iLastError = aError;\r
 312                 iUnderflowed++; // never happened to me while testing, but just in case\r
 313         }\r
 314 }\r
 315 \r