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
  13 #include "mmdrv.h"
  14
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 #include "wave.h"
  19
  20 APIENTRY DWORD auxMessage(UINT dwId,
  21                   UINT uMessage,
  22                   DWORD dwUser,
  23                   DWORD dwParam1,
  24                   DWORD dwParam2)
  25
  26 {
  27     MMRESULT Result;
  28     AUX_DD_VOLUME Volume;
  29
  30     DPRINT("auxMessage\n");
  31
  32
  33         // the following cases are documented by DDK
  34         switch (uMessage)
  35         {
  36         case AUXDM_GETDEVCAPS:
  37                 DPRINT("AUXDM_GETDEVCAPS");
  38                 return GetDeviceCapabilities(dwId, AuxDevice, (LPBYTE)dwParam1, (DWORD)dwParam2);
  39
  40         case AUXDM_GETNUMDEVS:
  41                 DPRINT("AUXDM_GETNUMDEVS");
  42                 return GetDeviceCount(AuxDevice);
  43
  44         case AUXDM_GETVOLUME:
  45          DPRINT("AUXDM_GETVOLUME");
  46          Result = AuxGetAudio(dwId, (PBYTE) &Volume, sizeof(Volume));
  47
  48          if (Result == MMSYSERR_NOERROR)
  49          {
  50             *(LPDWORD)dwParam1 = (DWORD)MAKELONG(HIWORD(Volume.Left), HIWORD(Volume.Right));
  51          }
  52          return Result;
  53
  54
  55         case AUXDM_SETVOLUME:
  56         DPRINT("AUXDM_SETVOLUME");
  57
  58         Volume.Right = HIWORD(dwParam1) << 16;
  59         Volume.Left = LOWORD(dwParam1) << 16;
  60
  61         return AuxSetAudio(dwId, (PBYTE)&Volume, sizeof(Volume));
  62
  63         }
  64
  65     return MMSYSERR_NOERROR;
  66 }
  67
  68
  69 DWORD AuxGetAudio(DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
  70 {
  71     HANDLE DeviceHandle;
  72     MMRESULT Result;
  73     DWORD BytesReturned;
  74
  75     Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
  76     if (Result != MMSYSERR_NOERROR)
  77          return Result;
  78
  79
  80     Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_GET_VOLUME, NULL, 0, (LPVOID)pVolume, sizeVolume,
  81                            &BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
  82
  83
  84     CloseHandle(DeviceHandle);
  85
  86     return Result;
  87  }
  88
  89 DWORD AuxSetAudio(DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
  90 {
  91     HANDLE DeviceHandle;
  92     MMRESULT Result;
  93     DWORD BytesReturned;
  94
  95     Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
  96     if (Result != MMSYSERR_NOERROR)
  97          return Result;
  98
  99     Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_SET_VOLUME, (LPVOID)pVolume, sizeVolume, NULL, 0,
 100                            &BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
 101
 102
 103     CloseHandle(DeviceHandle);
 104
 105     return Result;
 106  }
 107