sdk/include/reactos/libs/audiosrv/audiosrv.h

   1 /*
   2  * PROJECT:          ReactOS
   3  * LICENSE:          GPL - See COPYING in the top level directory
   4  * FILE:             include/reactos/libs/audiosrv/audiosrv.h
   5  * PURPOSE:          Audio Service Plug and Play list
   6  * COPYRIGHT:        Copyright 2007 Andrew Greenwood
   7  */
   8
   9 #include <winsvc.h>
  10
  11 #ifndef AUDIOSRV_H
  12 #define AUDIOSRV_H
  13
  14 /* The service name */
  15 #define SERVICE_NAME                L"AudioSrv"
  16
  17 /* A named mutex is used for synchronizing access to the device list.
  18    If this mutex doesn't exist, it means the audio service isn't running. */
  19 #define AUDIO_LIST_LOCK_NAME        L"Global\\AudioDeviceListLock"
  20
  21 /* ...and this is where the device list will be available */
  22 #define AUDIO_LIST_NAME             L"Global\\AudioDeviceList"
  23
  24 /* Amount of shared memory to allocate */
  25 #define AUDIO_LIST_MAX_SIZE         65536
  26
  27 typedef struct
  28 {
  29     DWORD enabled;
  30     WCHAR path[];       /* The device object path (excluded from sizeof) */
  31 } PnP_AudioDevice;
  32
  33 typedef struct
  34 {
  35     DWORD size;         /* Size of the shared mem */
  36     DWORD max_size;     /* Amount of mem available */
  37     DWORD device_count; /* Number of devices */
  38     PnP_AudioDevice *first_device;
  39 } PnP_AudioHeader;
  40
  41
  42 /* Calculate amount of memory consumed by a wide string - this includes the
  43    terminating NULL. */
  44
  45 #define WideStringSize(str) \
  46     ( (lstrlenW(str) + 1) * sizeof(WCHAR) )
  47
  48 BOOL
  49 InitializeAudioDeviceListLock(VOID);
  50
  51 VOID
  52 KillAudioDeviceListLock(VOID);
  53
  54 VOID
  55 LockAudioDeviceList(VOID);
  56
  57 VOID
  58 UnlockAudioDeviceList(VOID);
  59
  60 #endif