dll/win32/mmdrv/auxil.c

   1 /*
   2  *
   3  * COPYRIGHT:            See COPYING in the top level directory
   4  * PROJECT:              ReactOS Multimedia
   5  * FILE:                 lib/mmdrv/auxil.c
   6  * PURPOSE:              Multimedia User Mode Driver
   7  * PROGRAMMER:           Andrew Greenwood
   8  *                       Aleksey Bragin
   9  * UPDATE HISTORY:
  10  *                       Mar 16, 2004: Created skeleton implementation
  11  */
  12 #include "mmdrv.h"
  13 #include "wave.h"
  14
  15
  16 #define NDEBUG
  17 #include <debug.h>
  18
  19 APIENTRY DWORD auxMessage(UINT dwId,
  20                   UINT uMessage,
  21                   DWORD dwUser,
  22                   DWORD dwParam1,
  23                   DWORD dwParam2)
  24
  25 {
  26     MMRESULT Result;
  27     AUX_DD_VOLUME Volume;
  28
  29     DPRINT("auxMessage\n");
  30
  31
  32         // the following cases are documented by DDK
  33         switch (uMessage)
  34         {
  35         case AUXDM_GETDEVCAPS:
  36                 DPRINT("AUXDM_GETDEVCAPS");
  37                 return GetDeviceCapabilities(dwId, AuxDevice, (LPBYTE)dwParam1, (DWORD)dwParam2);
  38
  39         case AUXDM_GETNUMDEVS:
  40                 DPRINT("AUXDM_GETNUMDEVS");
  41                 return GetDeviceCount(AuxDevice);
  42
  43         case AUXDM_GETVOLUME:
  44          DPRINT("AUXDM_GETVOLUME");
  45          Result = AuxGetAudio(dwId, (PBYTE) &Volume, sizeof(Volume));
  46
  47          if (Result == MMSYSERR_NOERROR)
  48          {
  49             *(LPDWORD)dwParam1 = (DWORD)MAKELONG(HIWORD(Volume.Left), HIWORD(Volume.Right));
  50          }
  51          return Result;
  52
  53
  54         case AUXDM_SETVOLUME:
  55         DPRINT("AUXDM_SETVOLUME");
  56
  57         Volume.Right = HIWORD(dwParam1) << 16;
  58         Volume.Left = LOWORD(dwParam1) << 16;
  59
  60         return AuxSetAudio(dwId, (PBYTE)&Volume, sizeof(Volume));
  61
  62         }
  63
  64     return MMSYSERR_NOERROR;
  65 }
  66
  67
  68 DWORD AuxGetAudio(DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
  69 {
  70     HANDLE DeviceHandle;
  71     MMRESULT Result;
  72     DWORD BytesReturned;
  73
  74     Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
  75     if (Result != MMSYSERR_NOERROR)
  76          return Result;
  77
  78
  79     Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_GET_VOLUME, NULL, 0, (LPVOID)pVolume, sizeVolume,
  80                            &BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
  81
  82
  83     CloseHandle(DeviceHandle);
  84
  85     return Result;
  86  }
  87
  88 DWORD AuxSetAudio(DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
  89 {
  90     HANDLE DeviceHandle;
  91     MMRESULT Result;
  92     DWORD BytesReturned;
  93
  94     Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
  95     if (Result != MMSYSERR_NOERROR)
  96          return Result;
  97
  98     Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_SET_VOLUME, (LPVOID)pVolume, sizeVolume, NULL, 0,
  99                            &BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
 100
 101
 102     CloseHandle(DeviceHandle);
 103
 104     return Result;
 105  }
 106