| 1 | /* $Id: stream.hpp 142 2000-04-23 14:55:46Z ktk $ */
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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 STREAM_INCLUDED
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| 23 | #define STREAM_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 | #endif
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| 29 | #include <os2me.h>
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| 30 | #include <shdd.h>
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| 31 |
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| 32 | #include "strategy.h"
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| 33 | #include "audiohw.hpp"
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| 34 | #include "strmbuff.hpp"
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| 35 |
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| 36 | extern PQUEUEHEAD pStreamList; // List head for Streams.Defined in STREAM.CPP.
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| 37 |
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| 38 | // stream types
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| 39 | #define STREAM_READ AUDIOHW_READ_DEVICE
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| 40 | #define STREAM_WRITE AUDIOHW_WRITE_DEVICE
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| 41 | #define STREAM_WAVE_CAPTURE AUDIOHW_WAVE_CAPTURE
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| 42 | #define STREAM_WAVE_PLAY AUDIOHW_WAVE_PLAY
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| 43 | #define STREAM_MPU401_CAPTURE AUDIOHW_MPU401_CAPTURE
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| 44 | #define STREAM_MPU401_PLAY AUDIOHW_MPU401_PLAY
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| 45 |
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| 46 | // stream states
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| 47 | #define STREAM_STOPPED 0x00000000
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| 48 | #define STREAM_STREAMING 0x00000001
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| 49 | #define STREAM_PAUSED 0x00000002
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| 50 | #define STREAM_IDLE 0x00000004
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| 51 | #define STREAM_NOT_IDLE 0xFFFFFFFB
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| 52 |
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| 53 | // input sources
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| 54 | #define INPUT_LINEIN 0
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| 55 | #define INPUT_MIC 1
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| 56 | #define INPUT_MIXER 2
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| 57 |
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| 58 | typedef ULONG (__far __cdecl *PFN_SHD) (void __far *);
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| 59 |
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| 60 | class STREAM;
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| 61 | class AUDIOHW;
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| 62 | class EVENT;
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| 63 |
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| 64 | class STREAM : public QUEUEELEMENT {
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| 65 | public:
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| 66 | HSTREAM hstream;
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| 67 | PFN_SHD pfnSHD;
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| 68 | ULONG ulSysFileNum;
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| 69 | QUEUEHEAD qhInProcess;
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| 70 | QUEUEHEAD qhDone;
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| 71 | QUEUEHEAD qhEvent;
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| 72 | ULONG ulStreamType; // the stream type see above
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| 73 | ULONG ulStreamState; // the current state to the stream see above
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| 74 | ULONG ulStreamId;
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| 75 |
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| 76 | int fIncrementCounter; // true if the current time should be incremented on every tick
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| 77 |
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| 78 | ULONG EnableEvent(PDDCMDCONTROL pControl);
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| 79 | ULONG DisableEvent(PDDCMDCONTROL pControl);
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| 80 | ULONG PauseStreamTime(void);
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| 81 | ULONG ResumeStreamTime(void);
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| 82 | virtual ULONG Register(PDDCMDREGISTER);
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| 83 | void DeRegister(void);
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| 84 | virtual ULONG Write(PSTREAMBUF, unsigned);
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| 85 | virtual ULONG Read(PSTREAMBUF, unsigned) = 0;
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| 86 | virtual ULONG GetCurrentTime(void) = 0;
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| 87 | virtual void SetCurrentTime(ULONG time) = 0;
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| 88 | virtual ULONG StartStream(void) = 0;
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| 89 | virtual ULONG StopStream(PCONTROL_PARM) = 0;
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| 90 | virtual ULONG PauseStream(PCONTROL_PARM) = 0;
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| 91 | virtual ULONG ResumeStream(void) = 0;
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| 92 |
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| 93 | virtual void SetInputSrc(int src);
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| 94 | virtual void SetInputGain(ULONG gain);
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| 95 | virtual void SetVolume(ULONG volume);
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| 96 | virtual void SetBalance(ULONG balance);
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| 97 | virtual BOOL SetMasterVol(ULONG volume);
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| 98 |
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| 99 | void SetNextEvent(void);
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| 100 | STREAM(ULONG streamtype, USHORT filesysnum);
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| 101 | virtual ~STREAM(void);
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| 102 |
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| 103 | protected:
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| 104 | ULONG ulCurrentTime;
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| 105 | PAUDIOHW pahw; // pointer to the hardware object for this stream
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| 106 | void ReturnBuffer(void); // returns one buffer
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| 107 | void ReturnBuffers(void); // returns all buffers
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| 108 | void ProcessEvents(void);
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| 109 |
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| 110 | ULONG balance;
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| 111 | ULONG volume;
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| 112 | ULONG inputsrc;
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| 113 | ULONG inputgain;
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| 114 | static ULONG mastervol;
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| 115 | };
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| 116 | typedef STREAM *PSTREAM;
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| 117 |
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| 118 |
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| 119 | PSTREAM FindActiveStream(ULONG StreamType);
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| 120 | // Returns the pointer to the Active STREAM object with the given stream type
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| 121 |
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| 122 | PSTREAM FindActiveStream(ULONG StreamType, ULONG streamid);
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| 123 | // Returns the pointer to the Active STREAM object with the given stream type
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| 124 |
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| 125 | PSTREAM FindStream(HSTREAM hStream);
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| 126 | // Returns the pointer to the STREAM object with the given stream handle
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| 127 |
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| 128 | PSTREAM FindStream_fromFile(ULONG ulSysFileNum);
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| 129 | // Returns the pointer to the STREAM object with the given system file handle
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| 130 |
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| 131 | #endif
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