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Reactos
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#pragma once
20
21extern HRESULT MMDevEnum_Create(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
22extern void MMDevEnum_Free(void) DECLSPEC_HIDDEN;
23
24
25/* Changes to this enum must be synced in drivers. */
26enum _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
33typedef 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
59extern DriverFuncs drvs DECLSPEC_HIDDEN;
60
61typedef 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} MMDevice;
73
74extern HRESULT AudioClient_Create(MMDevice *parent, IAudioClient **ppv) DECLSPEC_HIDDEN;
75extern HRESULT AudioEndpointVolume_Create(MMDevice *parent, IAudioEndpointVolumeEx **ppv) DECLSPEC_HIDDEN;
76
77extern const WCHAR drv_keyW[] DECLSPEC_HIDDEN;