| 1 | /************************* START OF SPECIinCATIONS ***
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| 2 | *
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| 3 | * SOURCE FILE NAME: VSDOPEN.C
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| 4 | *
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| 5 | * DESCRIPTIVE NAME: Open routines for the VSD.
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| 6 | *
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| 7 | * COPYRIGHT: IBM Confidential
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| 8 | * Copyright (c) IBM Corporation 1991,1993
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| 9 | * All Rights Reserved
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| 10 | *
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| 11 | *
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| 12 | * FUNCTION: This source module will open the vsd (and associated audio
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| 13 | * device driver). This VSD utilizes the AUDIODD interface and an
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| 14 | * associated resource file to work around limitations in the AUDIODD
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| 15 | * interface (which has been corrected with the capability IOCTL).
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| 16 | *
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| 17 | *
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| 18 | * The following concepts are illustrated:
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| 19 | * 1. How to share the same instance with another DLL (MCI Amp-mixer).
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| 20 | * 2. Call to open the connected AUDIODD driver.
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| 21 | * 3. Bring in the VSD resource file (and why it is necessary) or
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| 22 | * utilize new device capability IOCTL.
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| 23 | * 4. Setup for resource allocation.
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| 24 | *
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| 25 | * NOTES:
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| 26 | *
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| 27 | * Change History:
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| 28 | * DATE DEVELOPER CHANGE DESCRIPTION
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| 29 | * 07/22/93 Linden deCarmo File created
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| 30 | * 05/24/94 Linden deCarmo Moved DosOpen to vsdioctl
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| 31 | * 05/24/94 Linden deCarmo Eliminated mixOpen
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| 32 | * 06/03/94 Linden deCarmo Added vsdOpen variable and fill in
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| 33 | * 06/11/94 Linden deCarmo datasubtype field MUST be filled in
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| 34 | * 06/14/94 Linden deCarmo Removed calls to setup io ports
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| 35 | * 06/14/94 Linden deCarmo Updated initial comments for .c file
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| 36 | * 06/19/94 Linden deCarmo Improved initial comments.
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| 37 | * 07/22/94 Mike Koval WPOS Changes for WorkPlace OS
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| 38 | * 10/11/94 Linden deCarmo Move DosClose to vsdioctl (os-specific).
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| 39 | * 06/29/95 Linden deCarmo Cleanup Hardware mixer support (15552).
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| 40 | *
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| 41 | ************************** END OF SPECIFICATIONS **************************/
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| 42 |
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| 43 | //#define INCL_NOPMAPI
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| 44 | #define INCL_DOS
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| 45 | #define INCL_ERRORS
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| 46 | //#define INCL_WINSHELLDATA
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| 47 | //#define INCL_WINWINDOWMGR
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| 48 | //#define INCL_WINATOM
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| 49 | //#define INCL_WIN
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| 50 | #define INCL_AUDIO_VSD
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| 51 |
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| 52 |
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| 53 | #include <os2.h>
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| 54 | #include <os2me.h>
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| 55 | #include <mcd.h>
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| 56 | #include <audio.h>
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| 57 | #include <stdio.h>
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| 58 | #include <string.h>
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| 59 | #include <hhpheap.h>
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| 60 |
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| 61 |
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| 62 | #include <vsdcmds.h>
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| 63 | #include <vsdaud.h>
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| 64 | #include <os2mixer.h>
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| 65 | #include <vsdmix.h>
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| 66 |
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| 67 |
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| 68 |
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| 69 | /************************ START OF SPECIFICATIONS **************************
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| 70 | *
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| 71 | * SUBROUTINE NAME: Open_Driver()
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| 72 | *
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| 73 | * FUNCTION: Verifies that the Audio DD has been loaded. Note, the open
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| 74 | * should not consume any resources.
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| 75 | *
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| 76 | * INPUT: pInstance - pointer to VSD instance structure
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| 77 | *
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| 78 | * OUTPUT:
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| 79 | *
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| 80 | * SUCESS : VSDERR_SUCCESS
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| 81 | *
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| 82 | * FAILURE: VSDERR_NO_DEVICE_DRIVER
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| 83 | *
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| 84 | * OS/2 CALLS: DosOpen(), DosClose(),
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| 85 | *
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| 86 | * C CALLS: None
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| 87 | *
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| 88 | * INTERNAL CALLS:
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| 89 | * *
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| 90 | *************************** END OF SPECIFICATIONS *************************/
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| 91 |
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| 92 | LONG VSDOpen( PVSD_OPEN_PARMS pVSDOpenParms )
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| 93 |
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| 94 | {
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| 95 |
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| 96 | LONG rc;
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| 97 | // LONG lError = VSDERR_SUCCESS;
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| 98 |
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| 99 | PVSD_INSTANCE pInstance;
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| 100 |
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| 101 | // ULONG ulAction;
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| 102 | // ULONG ulOffset;
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| 103 | // ULONG ulIniSize;
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| 104 |
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| 105 | // extern HHUGEHEAP hhpHeap;
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| 106 |
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| 107 | // HAB hab;
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| 108 | // HINI hini;
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| 109 | // BOOL fFoundMix;
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| 110 |
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| 111 | PVSD_AUDIOOPEN_PARMS pvsddata;
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| 112 |
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| 113 | // CHAR szIniFile[261];
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| 114 | // CHAR *pIniName;
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| 115 | #ifdef PERFORMANCE_TRACE
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| 116 | ULONG ulTime = 0;
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| 117 | CHAR LoadError[100];
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| 118 | CHAR DebugBuf[256];
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| 119 | PerfStartTime();
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| 120 | #endif
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| 121 |
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| 122 | /* If the caller passed in a primer, prime the instance with it */
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| 123 |
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| 124 | pvsddata = ( PVSD_AUDIOOPEN_PARMS ) pVSDOpenParms->pDevInfo;
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| 125 |
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| 126 | /*-------------------------------------------
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| 127 | * Retrieve IBM instance from vsdData parms
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| 128 | * note: other VSD writers should NOT use
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| 129 | * this instance--rather allocate their
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| 130 | * own instance--since it is liable to
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| 131 | * change.
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| 132 | *------------------------------------------*/
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| 133 |
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| 134 | pInstance = ( PVSD_INSTANCE )pvsddata->pDevInfo ;
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| 135 | pInstance->lSRate = pvsddata->ulSamplingRate;
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| 136 | pInstance->lBitsPerSRate = pvsddata->ulBitsPerSample;
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| 137 | pInstance->sChannels = pvsddata->ulChannels;
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| 138 | pInstance->sMode = pvsddata->ulDataType;
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| 139 | pInstance->usDeviceID = (USHORT) pvsddata->ulDeviceID;
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| 140 | pInstance->ulOperation = pvsddata->ulOperation;
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| 141 |
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| 142 |
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| 143 | pVSDOpenParms->hvsd = ( HVSD ) pInstance;
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| 144 |
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| 145 |
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| 146 | /* Store the name of the DD for future DosOpens */
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| 147 |
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| 148 | memmove( pInstance->szDeviceName,
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| 149 | pVSDOpenParms->szPDDName,
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| 150 | strlen( pVSDOpenParms->szPDDName ) );
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| 151 |
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| 152 | // PERFORMANCE enhancements--hhp sets memory to 0
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| 153 | // pInstance->ulActive = FALSE;
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| 154 | // pInstance->fMute = FALSE;
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| 155 | // pInstance->ulNumInputs = 0;
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| 156 | // pInstance->ulNumOutputs = 0;
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| 157 | // pInstance->ulGainLevel = 70;
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| 158 |
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| 159 | /*-----------------------------------------------------
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| 160 | * Some devices (w/o mixer support) can create some
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| 161 | * horrible feedback effects. So allow the manufacturer
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| 162 | * to determine whether monitoring should be enabled.
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| 163 | *-----------------------------------------------------*/
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| 164 | // PERFORMANCE enhancements--hhp sets memory to 0
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| 165 | // pInstance->lMonitor = MCI_FALSE;
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| 166 |
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| 167 |
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| 168 | /*-----------------------*
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| 169 | * Open the audio device
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| 170 | *-----------------------*/
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| 171 |
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| 172 | rc = OpenDevice ( pInstance );
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| 173 | if ( rc )
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| 174 | {
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| 175 | return ( rc );
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| 176 | }
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| 177 |
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| 178 |
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| 179 | /*-----------------------------------------------------------------*
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| 180 | * New device drivers will support the AUDIO_CAPABILITIES IOCTL. This
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| 181 | * IOCTL lets the mixer determine what sampling rate/bit per sample
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| 182 | * channels etc. the device supports. If the driver doesn't support
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| 183 | * the IOCTL, then we must load the information from a resource file.
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| 184 | *-----------------------------------------------------------------*/
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| 185 | rc = CapIOCTL( pInstance );
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| 186 | if ( rc )
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| 187 | {
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| 188 | /*-----------------------------------------------------------------*
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| 189 | * Each manufacturer is responsible for creating a resource file with
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| 190 | * all the device specific information we require. Retreive this
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| 191 | * resource table.
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| 192 | *-----------------------------------------------------------------*/
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| 193 | //-----------------------------------------------------------------------------
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| 194 | #ifdef INCL_MM_OS2
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| 195 | rc = SetupResourceTable( pInstance );
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| 196 |
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| 197 | if ( rc )
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| 198 | {
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| 199 | CloseDevice( pInstance );
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| 200 | return ( rc );
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| 201 | }
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| 202 | #endif
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| 203 | //-----------------------------------------------------------------------------
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| 204 |
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| 205 | //-----------------------------------------------------------------------------
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| 206 | #ifdef INCL_MM_WPOS
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| 207 | CloseDevice( pInstance );
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| 208 | return ( rc );
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| 209 | #endif
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| 210 | //-----------------------------------------------------------------------------
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| 211 |
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| 212 | }
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| 213 | // 15552
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| 214 | else
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| 215 | {
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| 216 | // setup instance to indicate mode device should go into.
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| 217 | // normally done with GetClassInformation if resource
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| 218 | // DLL is to be loaded.
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| 219 |
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| 220 | pInstance->ulHardwareMode = pInstance->ulDataType;
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| 221 | }
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| 222 | // 15552
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| 223 | // LAD--check ulState variable--can
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| 224 | if ( pInstance->fDriverCaps & SUPPORT_MIX )
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| 225 | {
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| 226 | // rc = mixOpen( ( PHMIXER ) &pInstance->hMix, 0 );
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| 227 | pInstance->hMix = pInstance->hFile;
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| 228 |
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| 229 |
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| 230 | // 10253--this means that we will have to close/reopen the VSD if data-types
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| 231 | // change.
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| 232 |
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| 233 | switch ( pInstance->sMode )
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| 234 | {
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| 235 | case DATATYPE_MIDI :
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| 236 | pInstance->ulLine = SOURCE_SYNTHESIZER;
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| 237 |
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| 238 | break;
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| 239 | default :
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| 240 | pInstance->ulLine = SOURCE_WAVE;
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| 241 | break;
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| 242 | }
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| 243 |
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| 244 | // PERFORMANCE enhancements--hhp sets memory to 0
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| 245 | // pInstance->lOutput = FALSE; // Indicate that wave connector must be enabled.
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| 246 |
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| 247 | /*-----------------------------------------
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| 248 | * This flag will indicate whether or not
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| 249 | * we will use the AUDIODD interface or
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| 250 | * use the new mixer IOCTL's.
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| 251 | *----------------------------------------*/
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| 252 |
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| 253 | // if ( pInstance->fDriverCaps & SUPPORT_MIX )
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| 254 | // {
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| 255 | pInstance->fHardwareMix = TRUE;
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| 256 | // }
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| 257 |
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| 258 | // lad--capability addition
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| 259 | /*---------------------------------------------------------
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| 260 | * Figure out the capabilities of each input/output line.
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| 261 | *--------------------------------------------------------*/
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| 262 | DetermineLineCaps(pInstance );
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| 263 |
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| 264 | // lad--capability addition
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| 265 |
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| 266 | } /* If we are to open a real mixer */
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| 267 |
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| 268 | /*---------------------------------------------------------
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| 269 | * We will ignore errors right now, since all DD's may not
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| 270 | * support the mixer functions.
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| 271 | *--------------------------------------------------------*/
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| 272 |
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| 273 | /*-----------------------------------------------------------------*
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| 274 | * Return the resource class and number of resource units for the
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| 275 | * mode that the caller has specified.
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| 276 | *-----------------------------------------------------------------*/
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| 277 | // 15552--not necessary if one has caps already
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| 278 |
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| 279 | #ifndef INCL_MM_WPOS
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| 280 | // 15552
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| 281 | if ( !( pInstance->fDriverCaps & SUPPORT_CAP) )
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| 282 | {
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| 283 | rc = GetClassInformation( pInstance );
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| 284 |
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| 285 | /*-------------------------------------------------
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| 286 | * Work around ACPA problems. Since we cannot ask
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| 287 | * the device driver if it can best fit until after
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| 288 | * the MCIDRV_RESTORE, perform the best fit on
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| 289 | * the open.
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| 290 | *-------------------------------------------------*/
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| 291 |
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| 292 | if ( pInstance->ulDeviceID == MACPA &&
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| 293 | rc == VSDERR_UNSUPP_SAMPLESPERSEC )
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| 294 | {
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| 295 | ACPABestFit( pInstance );
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| 296 | rc = VSDERR_SUCCESS;
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| 297 | }
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| 298 | else if ( rc )
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| 299 | {
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| 300 | /*-------------------------------------------------
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| 301 | * If an error occurs because the VSD can't support the
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| 302 | * requested mode (i.e. some type of ADPCM the VSD doesn't
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| 303 | * support, then it should update the following fields
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| 304 | * in the vsddata parms to the NEAREST mode that is
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| 305 | * supported.
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| 306 | *-------------------------------------------------*/
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| 307 |
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| 308 | pvsddata->ulSamplingRate = pInstance->ulBestFitRate;
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| 309 | pvsddata->ulBitsPerSample = pInstance->ulBestFitBPS ;
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| 310 | pvsddata->ulChannels = pInstance->ulBestFitChan;
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| 311 | pvsddata->ulDataType = pInstance->sBestFitMode ;
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| 312 |
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| 313 | CloseDevice( pInstance);
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| 314 | }
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| 315 | }
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| 316 | #endif
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| 317 | // 15552--not necessary if one has caps already
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| 318 |
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| 319 | pvsddata->ulDataSubType = pInstance->ulSubType;
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| 320 |
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| 321 | /*-------------------------------------------------
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| 322 | * The information is only utilized by the IBM VSD.
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| 323 | * Other VSDs do not have fill in this field.
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| 324 | *-------------------------------------------------*/
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| 325 |
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| 326 | pvsddata->ulReserved1 = pInstance->ulGlobalFile;
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| 327 |
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| 328 | return(rc);
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| 329 |
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| 330 | } /* Open Driver */
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| 331 |
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