reactos/lib/drivers/sound/mmebuddy/midi/midMessage.c

   1 /*
   2  * PROJECT:     ReactOS Sound System "MME Buddy" Library
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        lib/sound/mmebuddy/midi/midMessage.c
   5  *
   6  * PURPOSE:     Provides the midMessage exported function, as required by
   7  *              the MME API, for MIDI input device support.
   8  *
   9  * PROGRAMMERS: Andrew Greenwood (silverblade@reactos.org)
  10 */
  11
  12 #include <windows.h>
  13 #include <mmsystem.h>
  14 #include <mmddk.h>
  15
  16 #include <ntddsnd.h>
  17 #include <sndtypes.h>
  18
  19 #include <mmebuddy.h>
  20
  21 /*
  22     Standard MME driver entry-point for messages relating to MIDI input.
  23 */
  24 DWORD
  25 APIENTRY
  26 midMessage(
  27     UINT DeviceId,
  28     UINT Message,
  29     DWORD_PTR PrivateHandle,
  30     DWORD_PTR Parameter1,
  31     DWORD_PTR Parameter2)
  32 {
  33     MMRESULT Result = MMSYSERR_NOTSUPPORTED;
  34
  35     AcquireEntrypointMutex(MIDI_IN_DEVICE_TYPE);
  36
  37     SND_TRACE(L"midMessage - Message type %d\n", Message);
  38
  39     switch ( Message )
  40     {
  41         case MIDM_GETNUMDEVS :
  42         {
  43             Result = GetSoundDeviceCount(MIDI_IN_DEVICE_TYPE);
  44             break;
  45         }
  46
  47         case MIDM_GETDEVCAPS :
  48         {
  49             Result = MmeGetSoundDeviceCapabilities(MIDI_IN_DEVICE_TYPE,
  50                                                    DeviceId,
  51                                                    Parameter1,
  52                                                    Parameter2);
  53             break;
  54         }
  55     }
  56
  57     SND_TRACE(L"midMessage returning MMRESULT %d\n", Result);
  58
  59     ReleaseEntrypointMutex(MIDI_IN_DEVICE_TYPE);
  60
  61     return Result;
  62 }