| 1 | /* $Id: wavestrm.hpp 178 2001-04-30 21:08:00Z sandervl $ */
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| 2 |
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| 3 | /* SCCSID = %W% %E% */
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| 4 | /****************************************************************************
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| 5 | * *
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| 6 | * Copyright (c) IBM Corporation 1994 - 1997. *
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| 7 | * *
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| 8 | * The following IBM OS/2 source code is provided to you solely for the *
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| 9 | * the purpose of assisting you in your development of OS/2 device drivers. *
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| 10 | * You may use this code in accordance with the IBM License Agreement *
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| 11 | * provided in the IBM Device Driver Source Kit for OS/2. *
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| 12 | * *
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| 13 | ****************************************************************************/
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| 14 | /**@internal %W%
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| 15 | * Defines, class definations and prototypes for
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| 16 | * @version %I%
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| 17 | * @context Unless otherwise noted, all interfaces are Ring-0, 16-bit,
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| 18 | * <stack context>.
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| 19 | * @history
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| 20 | *
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| 21 | */
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| 22 | #ifndef WAVESTREAM_INCLUDED
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| 23 | #define WAVESTREAM_INCLUDED
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| 24 |
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| 25 | #ifndef OS2_INCLUDED
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| 26 | #define INCL_NOPMAPI
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| 27 | #include <os2.h>
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| 28 | #include <os2medef.h>
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| 29 | #include <audio.h>
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| 30 | #endif
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| 31 |
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| 32 | #include "stream.hpp"
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| 33 | #include "waudio.hpp"
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| 34 | #include "strmbuff.hpp"
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| 35 |
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| 36 | class WAVESTREAM : public STREAM {
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| 37 |
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| 38 | public:
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| 39 | void Process(void); // called every timer interrupt
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| 40 | virtual ULONG GetCurrentTime(void);
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| 41 | virtual ULONG GetCurrentPos(void);
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| 42 | virtual ULONG GetCurrentWritePos(void);
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| 43 | virtual void SetCurrentTime(ULONG time);
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| 44 | virtual ULONG Read(PSTREAMBUF, unsigned);
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| 45 | virtual ULONG Write(PSTREAMBUF, ULONG, BOOL fLooping = 0);
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| 46 | ULONG Write(PSTREAMBUFFER);
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| 47 | virtual ULONG StartStream(void);
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| 48 | virtual ULONG StopStream(PCONTROL_PARM);
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| 49 | virtual ULONG PauseStream(PCONTROL_PARM);
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| 50 | virtual ULONG ResumeStream(void);
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| 51 | WAVESTREAM(ULONG streamtype, LPMCI_AUDIO_INIT pinit, USHORT filesysnum);
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| 52 | virtual ~WAVESTREAM();
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| 53 |
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| 54 | virtual BOOL SetProperty(int type, ULONG value, ULONG reserved = 0);
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| 55 | virtual ULONG GetProperty(int type);
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| 56 |
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| 57 | protected:
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| 58 |
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| 59 | ULONG _ulAudioBufSz; // size of the audio buffer
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| 60 | WaveConfigInfo _configinfo; // configuration info shared with the hardware
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| 61 | ULONG _ulBytesProcessed; // number of bytes consumed or produces
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| 62 | ULONG _ulTimeBase; // value in ms. MMPM sends for stream time
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| 63 | ULONG fragsize;
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| 64 | USHORT _vRealignBuffer(ULONG FAR *endpos, PSTREAMBUFFER pbuffer);
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| 65 | void _vRealignPausedBuffers(ULONG endpos = 0);
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| 66 | virtual void AddBuffers(BOOL fFirst); // Initialize the audio buffer object
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| 67 | ULONG AddBuffer(ULONG space); // write one buffer to the audio buffer
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| 68 | BOOL _vReadAudioBuf(void); // read data from the audio buffer
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| 69 |
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| 70 | BOOL fUnderrun;
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| 71 | };
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| 72 | typedef WAVESTREAM *PWAVESTREAM;
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| 73 |
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| 74 | #endif
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