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Annotation of ntddk/src/mmedia/sndblst/dll/initc.c, revision 1.1

1.1     ! root        1: /****************************************************************************
        !             2:  *
        !             3:  *   initc.c
        !             4:  *
        !             5:  *   Copyright (c) 1991-1992 Microsoft Corporation.  All Rights Reserved.
        !             6:  *
        !             7:  ***************************************************************************/
        !             8: 
        !             9: #include <windows.h>
        !            10: #include <mmsystem.h>
        !            11: #include <mmddk.h>
        !            12: #define NOSTR  /* to avoid redefining strings */
        !            13: #include "registry.h"            // Local registry access functions
        !            14: #include "sndblst.h"
        !            15: 
        !            16: /****************************************************************************
        !            17: 
        !            18:     strings
        !            19: 
        !            20:  ***************************************************************************/
        !            21: 
        !            22: /* non-localized strings */
        !            23: TCHAR STR_DRIVERNAME[]     = TEXT("sndblst");
        !            24: TCHAR STR_PRODUCTNAME[]    = TEXT("Sound Blaster");
        !            25: 
        !            26: /****************************************************************************
        !            27: 
        !            28:     public data
        !            29: 
        !            30:  ***************************************************************************/
        !            31: 
        !            32: WORD    gwErrorStringId = 0;            /* if initialization fails, string id */
        !            33: 
        !            34: #ifdef DEBUG
        !            35: WORD    wDebugLevel = 0;        /* debug level */
        !            36: #endif
        !            37: 
        !            38: 
        !            39: /***************************************************************************
        !            40:  * @doc INTERNAL
        !            41:  *
        !            42:  * @api WORD | ConfigGetPortBase |
        !            43:  *
        !            44:  * @rdesc Returns the port base from the registry
        !            45:  ***************************************************************************/
        !            46: DWORD ConfigGetPortBase(void)
        !            47: {
        !            48: DWORD    Port;
        !            49: 
        !            50:     /* read registry and get the board configuration information. */
        !            51: 
        !            52:     if (ERROR_SUCCESS !=
        !            53:         DrvQueryDeviceParameter(&RegAccess, SOUND_REG_PORT, &Port)) {
        !            54: 
        !            55:         Port = (DWORD)SOUND_DEF_PORT;
        !            56:     }
        !            57: 
        !            58:     switch (Port) {
        !            59:         case 0x200:
        !            60:         case 0x210:
        !            61:         case 0x220:
        !            62:         case 0x230:
        !            63:         case 0x240:
        !            64:         case 0x250:
        !            65:         case 0x260:
        !            66:         case 0x270:
        !            67:             break;
        !            68: 
        !            69:         default:
        !            70:             Port = (DWORD)-1;
        !            71:             D1("driver PORT not configured");
        !            72:     }
        !            73: 
        !            74:     return (Port);
        !            75: }
        !            76: 
        !            77: 
        !            78: /***************************************************************************
        !            79:  * @doc INTERNAL
        !            80:  *
        !            81:  * @api WORD | ConfigGetIRQ |
        !            82:  *
        !            83:  * @rdesc Returns the IRQ ('int') from the registry
        !            84:  ***************************************************************************/
        !            85: DWORD ConfigGetIRQ(void)
        !            86: {
        !            87: DWORD    Int;
        !            88: 
        !            89:     if (ERROR_SUCCESS !=
        !            90:         DrvQueryDeviceParameter(&RegAccess, SOUND_REG_INTERRUPT, &Int)) {
        !            91: 
        !            92:         Int = (DWORD)SOUND_DEF_INT;
        !            93:     }
        !            94: 
        !            95:     switch (Int) {
        !            96:         case 3:
        !            97:         case 5:
        !            98:         case 7:
        !            99:         case 9:
        !           100:         case 10:
        !           101:             break;
        !           102: 
        !           103:         case 2:
        !           104:             Int = 9;
        !           105:             break;
        !           106: 
        !           107:         default:
        !           108:             Int = (DWORD)-1;
        !           109:             D1("driver INT not configured");
        !           110:             break;
        !           111:     }
        !           112: 
        !           113:     return (Int);
        !           114: }
        !           115: 
        !           116: 
        !           117: /***************************************************************************
        !           118:  * @doc INTERNAL
        !           119:  *
        !           120:  * @api WORD | ConfigGetDMAChannel |
        !           121:  *
        !           122:  * @rdesc Returns the DMA channel from the registry
        !           123:  ***************************************************************************/
        !           124: DWORD ConfigGetDMAChannel(void)
        !           125: {
        !           126: DWORD    DMAChannel;
        !           127: 
        !           128:     /* get the DMA channel that the card is using... */
        !           129:     if (ERROR_SUCCESS !=
        !           130:         DrvQueryDeviceParameter(&RegAccess, SOUND_REG_DMACHANNEL, &DMAChannel)) {
        !           131: 
        !           132:         DMAChannel = (DWORD)-1;
        !           133:     }
        !           134: 
        !           135:     switch (DMAChannel) {
        !           136:         case 0:
        !           137:         case 1:
        !           138:         case 3:
        !           139:             break;
        !           140: 
        !           141:         default:
        !           142:             DMAChannel = 1;
        !           143:     }
        !           144: 
        !           145:     return (DMAChannel);
        !           146: }
        !           147: 
        !           148: 
        !           149: /***************************************************************************/
        !           150: 
        !           151: static void NEAR PASCAL HardErrorMsgBox(WORD wStringId)
        !           152: {
        !           153: TCHAR szErrorBuffer[MAX_ERR_STRING]; /* buffer for error messages */
        !           154: 
        !           155:     LoadString(ghModule, wStringId, szErrorBuffer, sizeof(szErrorBuffer));
        !           156:     MessageBox(NULL, szErrorBuffer, STR_PRODUCTNAME, MB_OK|MB_SYSTEMMODAL|MB_ICONHAND);
        !           157: }
        !           158: 
        !           159: 
        !           160: 

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