reactos/lib/drivers/sound/mmebuddy/wave/widMessage.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/wave/widMessage.c
   5  *
   6  * PURPOSE:     Provides the widMessage exported function, as required by
   7  *              the MME API, for wave 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 wave audio
  23     input.
  24 */
  25 DWORD
  26 APIENTRY
  27 widMessage(
  28     DWORD DeviceId,
  29     DWORD Message,
  30     DWORD PrivateHandle,
  31     DWORD Parameter1,
  32     DWORD Parameter2)
  33 {
  34     MMRESULT Result = MMSYSERR_NOTSUPPORTED;
  35
  36     AcquireEntrypointMutex(WAVE_IN_DEVICE_TYPE);
  37
  38     SND_TRACE(L"widMessage - Message type %d\n", Message);
  39
  40     switch ( Message )
  41     {
  42         case WIDM_GETNUMDEVS :
  43         {
  44             Result = GetSoundDeviceCount(WAVE_IN_DEVICE_TYPE);
  45             break;
  46         }
  47
  48         case WIDM_START :
  49         {
  50             Result = MmeSetState(PrivateHandle, TRUE);
  51             break;
  52         }
  53
  54         case WIDM_STOP :
  55         {
  56             Result = MmeSetState(PrivateHandle, FALSE);
  57             break;
  58         }
  59
  60         case WIDM_GETDEVCAPS :
  61         {
  62
  63             Result = MmeGetSoundDeviceCapabilities(WAVE_IN_DEVICE_TYPE,
  64                                                    DeviceId,
  65                                                    (PVOID) Parameter1,
  66                                                    Parameter2);
  67             break;
  68         }
  69         case WIDM_OPEN :
  70         {
  71             Result = MmeOpenWaveDevice(WAVE_IN_DEVICE_TYPE,
  72                                        DeviceId,
  73                                        (LPWAVEOPENDESC) Parameter1,
  74                                        Parameter2,
  75                                        (DWORD*) PrivateHandle);
  76             break;
  77         }
  78
  79         case WIDM_CLOSE :
  80         {
  81             Result = MmeCloseDevice(PrivateHandle);
  82
  83             break;
  84         }
  85
  86         case WIDM_PREPARE :
  87         {
  88             /* TODO: Do we need to pass 2nd parameter? */
  89             Result = MmePrepareWaveHeader(PrivateHandle, Parameter1);
  90             break;
  91         }
  92
  93         case WIDM_UNPREPARE :
  94         {
  95             Result = MmeUnprepareWaveHeader(PrivateHandle, Parameter1);
  96             break;
  97         }
  98
  99         case WIDM_RESET :
 100         {
 101             /* Stop playback, reset position to zero */
 102             Result = MmeResetWavePlayback(PrivateHandle);
 103             break;
 104         }
 105
 106         case WIDM_ADDBUFFER :
 107         {
 108             Result = MmeWriteWaveHeader(PrivateHandle, Parameter1);
 109             break;
 110         }
 111
 112     }
 113
 114     SND_TRACE(L"widMessage returning MMRESULT %d\n", Result);
 115
 116     ReleaseEntrypointMutex(WAVE_IN_DEVICE_TYPE);
 117
 118     return Result;
 119 }