platform/uiq2/audio/mediaserver/audio_mediaserver.h

   1 /*******************************************************************\r
   2  *\r
   3  *      File:           Audio_mediaserver.h\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 #ifndef __AUDIO_MEDIASERVER_H\r
  16 #define __AUDIO_MEDIASERVER_H\r
  17 \r
  18 #include <Mda\Common\Audio.h>\r
  19 #include <MdaAudioOutputStream.h>\r
  20 \r
  21 #include "audio.h"\r
  22 #include "polledas.h"\r
  23 \r
  24 const TInt KSoundBuffers = 4;\r
  25 const TInt KBlockTime = 1000000 / 5; // hardcoded: 5 updates/sec\r
  26 const TInt KMaxLag = 260000; // max sound lag, lower values increase chanse of underflow\r
  27 const TInt KMaxUnderflows = 50; // max underflows/API errors we are going allow in a row (to prevent lockups)\r
  28 \r
  29 \r
  30 class TGameAudioEventListener : public MMdaAudioOutputStreamCallback\r
  31 {\r
  32 public: // implements MMdaAudioOutputStreamCallback\r
  33         void MaoscOpenComplete(TInt aError);\r
  34         void MaoscBufferCopied(TInt aError, const TDesC8& );\r
  35         void MaoscPlayComplete(TInt aError);\r
  36 \r
  37         TBool                                   iIsOpen;\r
  38 //      TBool                                   iHasCopied;\r
  39         TInt                                    iUnderflowed;\r
  40 };\r
  41 \r
  42 \r
  43 class CGameAudioMS : public IGameAudio // IGameAudio MUST be specified first!\r
  44 {\r
  45 public: // implements IGameAudio\r
  46         TInt16 *NextFrameL();\r
  47         TInt16 *DupeFrameL(TInt &aUnderflowed);\r
  48         TInt16 *ResumeL();\r
  49         void Pause();\r
  50         void ChangeVolume(TInt aUp);\r
  51 \r
  52 public:\r
  53         ~CGameAudioMS();\r
  54         CGameAudioMS(TInt aRate, TBool aStereo, TInt aPcmFrames, TInt aBufferedFrames);\r
  55         void ConstructL();\r
  56         EXPORT_C static CGameAudioMS* NewL(TInt aRate, TBool aStereo, TInt aPcmFrames, TInt aBufferedFrames);\r
  57 \r
  58 protected:\r
  59         void WriteBlockL();\r
  60         void UnderflowedL();\r
  61 \r
  62 protected:\r
  63         void WaitForOpenToCompleteL();\r
  64 //      void WaitForCopyToCompleteL();\r
  65 \r
  66         TInt                                    iRate;\r
  67         TBool                                   iStereo;\r
  68 \r
  69         CMdaAudioOutputStream   *iMdaAudioOutputStream;\r
  70         TMdaAudioDataSettings   iMdaAudioDataSettings;\r
  71 \r
  72         TGameAudioEventListener iListener;\r
  73 \r
  74         CPolledActiveScheduler  *iScheduler;\r
  75 \r
  76         HBufC8*                                 iSoundBuffers[KSoundBuffers+1];\r
  77         TInt                                    iBufferedFrames;\r
  78         TInt16*                                 iCurrentPosition;\r
  79         TInt                                    iCurrentBuffer;\r
  80         TInt                                    iFrameCount;\r
  81         TInt                                    iPcmFrames;\r
  82         CMdaServer*                             iServer;\r
  83 \r
  84         TInt64                                  iTime;\r
  85 };\r
  86 \r
  87 #endif                  /* __AUDIO_MEDIASERVER_H */\r