dlls/mmdevapi/mmdevapi.h

   1 /*
   2  * Copyright 2009 Maarten Lankhorst
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <wine/list.h>
  20
  21 extern HRESULT MMDevEnum_Create(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
  22 extern void MMDevEnum_Free(void) DECLSPEC_HIDDEN;
  23
  24
  25 /* Changes to this enum must be synced in drivers. */
  26 enum _DriverPriority {
  27     Priority_Unavailable = 0, /* driver won't work */
  28     Priority_Low, /* driver may work, but unlikely */
  29     Priority_Neutral, /* driver makes no judgment */
  30     Priority_Preferred /* driver thinks it's correct */
  31 };
  32
  33 typedef struct _DriverFuncs {
  34     HMODULE module;
  35     WCHAR module_name[64];
  36     int priority;
  37
  38     /* Returns a "priority" value for the driver. Highest priority wins.
  39      * If multiple drivers think they are valid, they will return a
  40      * priority value reflecting the likelihood that they are actually
  41      * valid. See enum _DriverPriority. */
  42     int (WINAPI *pGetPriority)(void);
  43
  44     /* ids gets an array of human-friendly endpoint names
  45      * keys gets an array of driver-specific stuff that is used
  46      *   in GetAudioEndpoint to identify the endpoint
  47      * it is the caller's responsibility to free both arrays, and
  48      *   all of the elements in both arrays with HeapFree() */
  49     HRESULT (WINAPI *pGetEndpointIDs)(EDataFlow flow, WCHAR ***ids,
  50             GUID **guids, UINT *num, UINT *default_index);
  51     HRESULT (WINAPI *pGetAudioEndpoint)(void *key, IMMDevice *dev,
  52             IAudioClient **out);
  53     HRESULT (WINAPI *pGetAudioSessionManager)(IMMDevice *device,
  54             IAudioSessionManager2 **out);
  55     HRESULT (WINAPI *pGetPropValue)(GUID *guid,
  56             const PROPERTYKEY *prop, PROPVARIANT *out);
  57 } DriverFuncs;
  58
  59 extern DriverFuncs drvs DECLSPEC_HIDDEN;
  60
  61 typedef struct MMDevice {
  62     IMMDevice IMMDevice_iface;
  63     IMMEndpoint IMMEndpoint_iface;
  64     LONG ref;
  65
  66     CRITICAL_SECTION crst;
  67
  68     EDataFlow flow;
  69     DWORD state;
  70     GUID devguid;
  71     WCHAR *drv_id;
  72
  73     struct list entry;
  74 } MMDevice;
  75
  76 extern HRESULT AudioClient_Create(MMDevice *parent, IAudioClient **ppv) DECLSPEC_HIDDEN;
  77 extern HRESULT AudioEndpointVolume_Create(MMDevice *parent, IAudioEndpointVolumeEx **ppv) DECLSPEC_HIDDEN;
  78 extern HRESULT SpatialAudioClient_Create(IMMDevice *device, ISpatialAudioClient **out) DECLSPEC_HIDDEN;
  79
  80 extern HRESULT load_devices_from_reg(void) DECLSPEC_HIDDEN;
  81 extern HRESULT load_driver_devices(EDataFlow flow) DECLSPEC_HIDDEN;
  82
  83 extern const WCHAR drv_keyW[] DECLSPEC_HIDDEN;