mmdevapi.h File Reference

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Classes
struct	_DriverFuncs
struct	MMDevice

Typedefs
typedef struct _DriverFuncs	DriverFuncs
typedef struct MMDevice	MMDevice

Enumerations
enum	_DriverPriority { Priority_Unavailable = 0 , Priority_Low , Priority_Neutral , Priority_Preferred }

Functions
HRESULT	MMDevEnum_Create (REFIID riid, void **ppv) DECLSPEC_HIDDEN
void	MMDevEnum_Free (void) DECLSPEC_HIDDEN
HRESULT	AudioClient_Create (MMDevice *parent, IAudioClient **ppv) DECLSPEC_HIDDEN
HRESULT	AudioEndpointVolume_Create (MMDevice *parent, IAudioEndpointVolumeEx **ppv) DECLSPEC_HIDDEN

Variables
DriverFuncs drvs	DECLSPEC_HIDDEN

Typedef Documentation

DriverFuncs

typedef struct _DriverFuncs DriverFuncs

MMDevice

typedef struct MMDevice MMDevice

Enumeration Type Documentation

_DriverPriority

enum _DriverPriority

Enumerator
Priority_Unavailable
Priority_Low
Priority_Neutral
Priority_Preferred

Definition at line 26 of file mmdevapi.h.

                     {
    Priority_Unavailable = 0, /* driver won't work */
    Priority_Low, /* driver may work, but unlikely */
    Priority_Neutral, /* driver makes no judgment */
    Priority_Preferred /* driver thinks it's correct */
};

Function Documentation

AudioClient_Create()

HRESULT AudioClient_Create	(	MMDevice *	parent,
		IAudioClient **	ppv
	)

AudioEndpointVolume_Create()

HRESULT AudioEndpointVolume_Create	(	MMDevice *	parent,
		IAudioEndpointVolumeEx **	ppv
	)

Definition at line 305 of file audiovolume.c.

{
    AEVImpl *This;
 
    *ppv = NULL;
    This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This));
    if (!This)
        return E_OUTOFMEMORY;
    This->IAudioEndpointVolumeEx_iface.lpVtbl = &AEVImpl_Vtbl;
    This->ref = 1;
 
    *ppv = &This->IAudioEndpointVolumeEx_iface;
    return S_OK;
}

Referenced by MMDevice_Activate().

MMDevEnum_Create()

HRESULT MMDevEnum_Create	(	REFIID	riid,
		void **	ppv
	)

Definition at line 881 of file devenum.c.

{
    MMDevEnumImpl *This = MMDevEnumerator;
 
    if (!This)
    {
        This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
        *ppv = NULL;
        if (!This)
            return E_OUTOFMEMORY;
        This->ref = 1;
        This->IMMDeviceEnumerator_iface.lpVtbl = &MMDevEnumVtbl;
        MMDevEnumerator = This;
 
        load_devices_from_reg();
        load_driver_devices(eRender);
        load_driver_devices(eCapture);
    }
    return IMMDeviceEnumerator_QueryInterface(&This->IMMDeviceEnumerator_iface, riid, ppv);
}

MMDevEnum_Free()

void MMDevEnum_Free

(

void

)

Definition at line 902 of file devenum.c.

{
    while (MMDevice_count)
        MMDevice_Destroy(MMDevice_head[0]);
    RegCloseKey(key_render);
    RegCloseKey(key_capture);
    key_render = key_capture = NULL;
    HeapFree(GetProcessHeap(), 0, MMDevEnumerator);
    MMDevEnumerator = NULL;
}

Referenced by DllMain(), and MMDevEnum_Release().

Variable Documentation

DECLSPEC_HIDDEN

const WCHAR drv_keyW [] DECLSPEC_HIDDEN

extern

Definition at line 77 of file mmdevapi.h.