| 1 | /* $Id: audiohw.hpp,v 1.1 2000/04/23 14:55:15 ktk Exp $ */
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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 Audiohw object
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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 AUDIOHW_INCLUDED
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| 23 | #define AUDIOHW_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 | #ifndef AUDIO_CAPABILITY
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| 30 | #include <audio.h> // PAUDIO_CAPS
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| 31 | #endif
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| 32 | #include "queue.hpp"
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| 33 |
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| 34 | // Audio Hardware Device Types values for usDeviceType
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| 35 | #define AUDIOHW_INVALID_DEVICE (~0)
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| 36 | #define AUDIOHW_READ_DEVICE 0x0000
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| 37 | #define AUDIOHW_WRITE_DEVICE 0x0001
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| 38 | #define AUDIOHW_WAVE_CAPTURE 0x0010
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| 39 | #define AUDIOHW_WAVE_PLAY 0x0011
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| 40 | #define AUDIOHW_FMSYNTH_CAPTURE 0x0020
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| 41 | #define AUDIOHW_FMSYNTH_PLAY 0x0021
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| 42 | #define AUDIOHW_MPU401_CAPTURE 0x0040
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| 43 | #define AUDIOHW_MPU401_PLAY 0x0041
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| 44 | #define AUDIOHW_TIMER 0x0080
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| 45 |
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| 46 | #define NUM_HARDWARE_DEVICE_TYPES 32
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| 47 |
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| 48 |
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| 49 | // Rudi: Dolby AC3 support
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| 50 |
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| 51 | #ifndef DATATYPE_AC3
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| 52 | #define DATATYPE_AC3 0xac3 //DATATYPE_MPEG1AUDIO
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| 53 | #endif
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| 54 |
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| 55 |
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| 56 | extern PQUEUEHEAD pAudioHWList;
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| 57 |
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| 58 | class AUDIOHW;
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| 59 | class STREAM;
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| 60 |
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| 61 | class AUDIOHW : public QUEUEELEMENT {
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| 62 | protected:
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| 63 | AUDIOHW(USHORT devicetype) :
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| 64 | usDeviceType (devicetype)
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| 65 | {pAudioHWList->PushOnTail(this);};
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| 66 |
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| 67 | public:
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| 68 | const USHORT usDeviceType;
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| 69 | virtual int Start(STREAM *stream) = 0; // Start the operation
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| 70 | virtual int Stop(STREAM *stream) = 0; // Stop the operation
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| 71 | virtual int Pause(STREAM *stream) = 0; // Pause the operation
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| 72 | virtual int Resume(STREAM *stream) = 0; // Resume the operation
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| 73 | virtual void DevCaps(PAUDIO_CAPS pCaps) = 0;
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| 74 | };
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| 75 | typedef AUDIOHW *PAUDIOHW;
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| 76 |
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| 77 | // Globally Scoped function that returns the pointer to a particular
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| 78 | // hardware device.
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| 79 | PAUDIOHW GetHardwareDevice(USHORT Devicetype);
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| 80 |
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| 81 | // Globally Scoped function to setup a hardware data type
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| 82 | void SetHardwareType(USHORT HardwareType, USHORT DataType, USHORT Operation, USHORT LDev);
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| 83 |
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| 84 | // Globally Scoped function associate hardware types to the type of data files
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| 85 | // they can play or record....
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| 86 | USHORT GetHardwareType(USHORT DataType, USHORT Operation, USHORT LDev);
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| 87 |
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| 88 | // Hardware Index Class
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| 89 | // MMPM/2 when sends an Audio Ioctl Init or Audio Ioctl Capability to the
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| 90 | // driver,it includes a Data Type (see AUDIO.H and OS2MEDEF.H). The driver needs
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| 91 | // to associate the data type with the hardware class that process it. The
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| 92 | // the hardware_index class holds information that identifies which hardware
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| 93 | // classes can handle a particular data type and what operations (play or
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| 94 | // record) it can provide for that data type
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| 95 | class hardware_index {
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| 96 | public:
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| 97 | USHORT DeviceType; // The audiohw data type (see above)
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| 98 | USHORT LogicalDevice; // The strategy entry this request came from.
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| 99 | // MMPM/2 will not send requests for 2 like devices
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| 100 | // the same driver, but it can be "fooled" into
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| 101 | // thinking there are 2 drivers each capable of
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| 102 | // 1 of said devices..
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| 103 | USHORT DeviceDataType; // the DataType fro MMPM/2 (see AUDIO.H/OS2MEDEF.H)
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| 104 | USHORT DeviceOperation; // the operation type (see AUDIO.H
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| 105 | // AUDIO_INIT.ulOperation)
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| 106 | };
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| 107 |
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| 108 | #endif
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