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Annotation of ntddk/src/mmedia/mmdrv/auxdd.c, revision 1.1.1.1

1.1       root        1: /****************************************************************************
                      2:  *
                      3:  *   auxdd.c
                      4:  *
                      5:  *   Multimedia kernel driver support component (mmdrv)
                      6:  *
                      7:  *   Copyright (c) 1991-1992 Microsoft Corporation.  All Rights Reserved.
                      8:  *
                      9:  *   Driver for wave input and output devices
                     10:  *
                     11:  *   -- Aux driver entry point(auxMessage)
                     12:  *
                     13:  *   History
                     14:  *      25-Aug-1992 - Robin Speed (RobinSp) wrote it
                     15:  *
                     16:  ***************************************************************************/
                     17: 
                     18:  #include "mmdrv.h"
                     19:  #include <ntddaux.h>
                     20: 
                     21: /****************************************************************************
                     22: 
                     23:     This function conforms to the standard Aux driver message proc
                     24:     (auxMessage), which is documented in the DDK.
                     25: 
                     26: ****************************************************************************/
                     27:  DWORD auxMessage(UINT uDevice,
                     28:                   UINT uMsg,
                     29:                   DWORD dwUser,
                     30:                   DWORD dwParam1,
                     31:                   DWORD dwParam2)
                     32: 
                     33: {
                     34:     MMRESULT mRet;
                     35:     AUX_DD_VOLUME Volume;
                     36: 
                     37:     switch (uMsg) {
                     38:     case AUXDM_GETDEVCAPS:
                     39:         dprintf2(("AUXDM_GETDEVCAPS"));
                     40:         return sndGetData(AuxDevice, uDevice, dwParam2, (LPBYTE)dwParam1,
                     41:                           IOCTL_AUX_GET_CAPABILITIES);
                     42: 
                     43:     case AUXDM_GETNUMDEVS:
                     44:         dprintf2(("AUXDM_GETNUMDEVS"));
                     45:         return sndGetNumDevs(AuxDevice);
                     46: 
                     47:     case AUXDM_GETVOLUME:
                     48:         dprintf2(("AUXDM_GETVOLUME"));
                     49: 
                     50:         mRet = sndGetData(AuxDevice, uDevice, sizeof(Volume),
                     51:                           (PBYTE)&Volume, IOCTL_AUX_GET_VOLUME);
                     52: 
                     53:         if (mRet == MMSYSERR_NOERROR) {
                     54:             *(LPDWORD)dwParam1 =
                     55:                 (DWORD)MAKELONG(HIWORD(Volume.Left),
                     56:                                 HIWORD(Volume.Right));
                     57:         }
                     58: 
                     59:         return mRet;
                     60: 
                     61:     case AUXDM_SETVOLUME:
                     62:         dprintf2(("AUXDM_SETVOLUME"));
                     63:         Volume.Left = LOWORD(dwParam1) << 16;
                     64:         Volume.Right = HIWORD(dwParam1) << 16;
                     65: 
                     66:         return sndSetData(AuxDevice, uDevice, sizeof(Volume),
                     67:                           (PBYTE)&Volume, IOCTL_AUX_SET_VOLUME);
                     68:     }
                     69: }

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