"Convert" the QSA backend to the new API

I say "convert" because it takes the lazy way and essentially just embeds the
wrappers into the backend. It's done this way because I lack the means to check
any changes, even syntactically. This also means the device's ExtraData field
is still needed.

However, this does mean all the backends are now using the new API. Code
related to the old interface can now be removed.

5 files changed, 201 insertions, 269 deletions

diff --git a/Alc/ALc.c b/Alc/ALc.c
index 7f6cf279..6642c334 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -54,57 +54,52 @@
 struct BackendInfo {
     const char *name;
     ALCbackendFactory* (*getFactory)(void);
-    ALCboolean (*Init)(BackendFuncs*);
-    void (*Deinit)(void);
-    void (*Probe)(enum DevProbe);
-    BackendFuncs Funcs;
 };
 
-#define EmptyFuncs { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
 static struct BackendInfo BackendList[] = {
 #ifdef HAVE_JACK
-    { "jack", ALCjackBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "jack", ALCjackBackendFactory_getFactory },
 #endif
 #ifdef HAVE_PULSEAUDIO
-    { "pulse", ALCpulseBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "pulse", ALCpulseBackendFactory_getFactory },
 #endif
 #ifdef HAVE_ALSA
-    { "alsa", ALCalsaBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "alsa", ALCalsaBackendFactory_getFactory },
 #endif
 #ifdef HAVE_COREAUDIO
-    { "core", ALCcoreAudioBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "core", ALCcoreAudioBackendFactory_getFactory },
 #endif
 #ifdef HAVE_OSS
-    { "oss", ALCossBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "oss", ALCossBackendFactory_getFactory },
 #endif
 #ifdef HAVE_SOLARIS
-    { "solaris", ALCsolarisBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "solaris", ALCsolarisBackendFactory_getFactory },
 #endif
 #ifdef HAVE_SNDIO
-    { "sndio", ALCsndioBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "sndio", ALCsndioBackendFactory_getFactory },
 #endif
 #ifdef HAVE_QSA
-    { "qsa", NULL, alc_qsa_init, alc_qsa_deinit, alc_qsa_probe, EmptyFuncs },
+    { "qsa", ALCqsaBackendFactory_getFactory },
 #endif
 #ifdef HAVE_MMDEVAPI
-    { "mmdevapi", ALCmmdevBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "mmdevapi", ALCmmdevBackendFactory_getFactory },
 #endif
 #ifdef HAVE_DSOUND
-    { "dsound", ALCdsoundBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "dsound", ALCdsoundBackendFactory_getFactory },
 #endif
 #ifdef HAVE_WINMM
-    { "winmm", ALCwinmmBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "winmm", ALCwinmmBackendFactory_getFactory },
 #endif
 #ifdef HAVE_PORTAUDIO
-    { "port", ALCportBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "port", ALCportBackendFactory_getFactory },
 #endif
 #ifdef HAVE_OPENSL
-    { "opensl", ALCopenslBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "opensl", ALCopenslBackendFactory_getFactory },
 #endif
 
-    { "null", ALCnullBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "null", ALCnullBackendFactory_getFactory },
 #ifdef HAVE_WAVE
-    { "wave", ALCwaveBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
+    { "wave", ALCwaveBackendFactory_getFactory },
 #endif
 };
 static ALsizei BackendListSize = COUNTOF(BackendList);
@@ -1091,43 +1086,20 @@ static void alc_initconfig(void)
 
     for(i = 0;i < BackendListSize && (!PlaybackBackend.name || !CaptureBackend.name);i++)
     {
-        if(BackendList[i].getFactory)
-        {
-            ALCbackendFactory *factory = BackendList[i].getFactory();
-            if(!V0(factory,init)())
-            {
-                WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
-                continue;
-            }
-
-            TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
-            if(!PlaybackBackend.name && V(factory,querySupport)(ALCbackend_Playback))
-            {
-                PlaybackBackend = BackendList[i];
-                TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
-            }
-            if(!CaptureBackend.name && V(factory,querySupport)(ALCbackend_Capture))
-            {
-                CaptureBackend = BackendList[i];
-                TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
-            }
-
-            continue;
-        }
-
-        if(!BackendList[i].Init(&BackendList[i].Funcs))
+        ALCbackendFactory *factory = BackendList[i].getFactory();
+        if(!V0(factory,init)())
         {
             WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
             continue;
         }
 
         TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
-        if(BackendList[i].Funcs.OpenPlayback && !PlaybackBackend.name)
+        if(!PlaybackBackend.name && V(factory,querySupport)(ALCbackend_Playback))
         {
             PlaybackBackend = BackendList[i];
             TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
         }
-        if(BackendList[i].Funcs.OpenCapture && !CaptureBackend.name)
+        if(!CaptureBackend.name && V(factory,querySupport)(ALCbackend_Capture))
         {
             CaptureBackend = BackendList[i];
             TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
@@ -1299,13 +1271,8 @@ static void alc_deinit(void)
 
     for(i = 0;i < BackendListSize;i++)
     {
-        if(!BackendList[i].getFactory)
-            BackendList[i].Deinit();
-        else
-        {
-            ALCbackendFactory *factory = BackendList[i].getFactory();
-            V0(factory,deinit)();
-        }
+        ALCbackendFactory *factory = BackendList[i].getFactory();
+        V0(factory,deinit)();
     }
     {
         ALCbackendFactory *factory = ALCloopbackFactory_getFactory();
@@ -1321,18 +1288,16 @@ static void alc_deinit(void)
  ************************************************/
 static void ProbeDevices(al_string *list, struct BackendInfo *backendinfo, enum DevProbe type)
 {
+    ALCbackendFactory *factory;
+
     DO_INITCONFIG();
 
     LockLists();
     alstr_clear(list);
 
-    if(backendinfo->Probe)
-        backendinfo->Probe(type);
-    else if(backendinfo->getFactory)
-    {
-        ALCbackendFactory *factory = backendinfo->getFactory();
-        V(factory,probe)(type);
-    }
+    factory = backendinfo->getFactory();
+    V(factory,probe)(type);
+
     UnlockLists();
 }
 static void ProbeAllDevicesList(void)
@@ -3830,6 +3795,7 @@ ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context)
  */
 ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
 {
+    ALCbackendFactory *factory;
     const ALCchar *fmt;
     ALCdevice *device;
     ALCenum err;
@@ -3916,14 +3882,8 @@ ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
     device->NumUpdates = 3;
     device->UpdateSize = 1024;
 
-    if(!PlaybackBackend.getFactory)
-        device->Backend = create_backend_wrapper(device, &PlaybackBackend.Funcs,
-                                                 ALCbackend_Playback);
-    else
-    {
-        ALCbackendFactory *factory = PlaybackBackend.getFactory();
-        device->Backend = V(factory,createBackend)(device, ALCbackend_Playback);
-    }
+    factory = PlaybackBackend.getFactory();
+    device->Backend = V(factory,createBackend)(device, ALCbackend_Playback);
     if(!device->Backend)
     {
         al_free(device);
@@ -4151,6 +4111,7 @@ ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *device)
  ************************************************/
 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei samples)
 {
+    ALCbackendFactory *factory;
     ALCdevice *device = NULL;
     ALCenum err;
     ALCsizei i;
@@ -4208,14 +4169,8 @@ ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName,
         device->ChannelDelay[i].Buffer = NULL;
     }
 
-    if(!CaptureBackend.getFactory)
-        device->Backend = create_backend_wrapper(device, &CaptureBackend.Funcs,
-                                                 ALCbackend_Capture);
-    else
-    {
-        ALCbackendFactory *factory = CaptureBackend.getFactory();
-        device->Backend = V(factory,createBackend)(device, ALCbackend_Capture);
-    }
+    factory = CaptureBackend.getFactory();
+    device->Backend = V(factory,createBackend)(device, ALCbackend_Capture);
     if(!device->Backend)
     {
         al_free(device);
diff --git a/Alc/backends/base.c b/Alc/backends/base.c
index 902c4310..5f568d8e 100644
--- a/Alc/backends/base.c
+++ b/Alc/backends/base.c
@@ -79,157 +79,3 @@ void ALCbackend_unlock(ALCbackend *self)
 void ALCbackendFactory_deinit(ALCbackendFactory* UNUSED(self))
 {
 }
-
-
-/* Wrappers to use an old-style backend with the new interface. */
-typedef struct PlaybackWrapper {
-    DERIVE_FROM_TYPE(ALCbackend);
-
-    const BackendFuncs *Funcs;
-} PlaybackWrapper;
-
-static void PlaybackWrapper_Construct(PlaybackWrapper *self, ALCdevice *device, const BackendFuncs *funcs);
-static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, void, Destruct)
-static ALCenum PlaybackWrapper_open(PlaybackWrapper *self, const ALCchar *name);
-static void PlaybackWrapper_close(PlaybackWrapper *self);
-static ALCboolean PlaybackWrapper_reset(PlaybackWrapper *self);
-static ALCboolean PlaybackWrapper_start(PlaybackWrapper *self);
-static void PlaybackWrapper_stop(PlaybackWrapper *self);
-static DECLARE_FORWARD2(PlaybackWrapper, ALCbackend, ALCenum, captureSamples, void*, ALCuint)
-static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, ALCuint, availableSamples)
-static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, ClockLatency, getClockLatency)
-static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, void, lock)
-static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, void, unlock)
-DECLARE_DEFAULT_ALLOCATORS(PlaybackWrapper)
-DEFINE_ALCBACKEND_VTABLE(PlaybackWrapper);
-
-static void PlaybackWrapper_Construct(PlaybackWrapper *self, ALCdevice *device, const BackendFuncs *funcs)
-{
-    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
-    SET_VTABLE2(PlaybackWrapper, ALCbackend, self);
-
-    self->Funcs = funcs;
-}
-
-static ALCenum PlaybackWrapper_open(PlaybackWrapper *self, const ALCchar *name)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    return self->Funcs->OpenPlayback(device, name);
-}
-
-static void PlaybackWrapper_close(PlaybackWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    self->Funcs->ClosePlayback(device);
-}
-
-static ALCboolean PlaybackWrapper_reset(PlaybackWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    return self->Funcs->ResetPlayback(device);
-}
-
-static ALCboolean PlaybackWrapper_start(PlaybackWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    return self->Funcs->StartPlayback(device);
-}
-
-static void PlaybackWrapper_stop(PlaybackWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    self->Funcs->StopPlayback(device);
-}
-
-
-typedef struct CaptureWrapper {
-    DERIVE_FROM_TYPE(ALCbackend);
-
-    const BackendFuncs *Funcs;
-} CaptureWrapper;
-
-static void CaptureWrapper_Construct(CaptureWrapper *self, ALCdevice *device, const BackendFuncs *funcs);
-static DECLARE_FORWARD(CaptureWrapper, ALCbackend, void, Destruct)
-static ALCenum CaptureWrapper_open(CaptureWrapper *self, const ALCchar *name);
-static void CaptureWrapper_close(CaptureWrapper *self);
-static DECLARE_FORWARD(CaptureWrapper, ALCbackend, ALCboolean, reset)
-static ALCboolean CaptureWrapper_start(CaptureWrapper *self);
-static void CaptureWrapper_stop(CaptureWrapper *self);
-static ALCenum CaptureWrapper_captureSamples(CaptureWrapper *self, void *buffer, ALCuint samples);
-static ALCuint CaptureWrapper_availableSamples(CaptureWrapper *self);
-static DECLARE_FORWARD(CaptureWrapper, ALCbackend, ClockLatency, getClockLatency)
-static DECLARE_FORWARD(CaptureWrapper, ALCbackend, void, lock)
-static DECLARE_FORWARD(CaptureWrapper, ALCbackend, void, unlock)
-DECLARE_DEFAULT_ALLOCATORS(CaptureWrapper)
-DEFINE_ALCBACKEND_VTABLE(CaptureWrapper);
-
-static void CaptureWrapper_Construct(CaptureWrapper *self, ALCdevice *device, const BackendFuncs *funcs)
-{
-    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
-    SET_VTABLE2(CaptureWrapper, ALCbackend, self);
-
-    self->Funcs = funcs;
-}
-
-static ALCenum CaptureWrapper_open(CaptureWrapper *self, const ALCchar *name)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    return self->Funcs->OpenCapture(device, name);
-}
-
-static void CaptureWrapper_close(CaptureWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    self->Funcs->CloseCapture(device);
-}
-
-static ALCboolean CaptureWrapper_start(CaptureWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    self->Funcs->StartCapture(device);
-    return ALC_TRUE;
-}
-
-static void CaptureWrapper_stop(CaptureWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    self->Funcs->StopCapture(device);
-}
-
-static ALCenum CaptureWrapper_captureSamples(CaptureWrapper *self, void *buffer, ALCuint samples)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    return self->Funcs->CaptureSamples(device, buffer, samples);
-}
-
-static ALCuint CaptureWrapper_availableSamples(CaptureWrapper *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    return self->Funcs->AvailableSamples(device);
-}
-
-
-ALCbackend *create_backend_wrapper(ALCdevice *device, const BackendFuncs *funcs, ALCbackend_Type type)
-{
-    if(type == ALCbackend_Playback)
-    {
-        PlaybackWrapper *backend;
-
-        NEW_OBJ(backend, PlaybackWrapper)(device, funcs);
-        if(!backend) return NULL;
-
-        return STATIC_CAST(ALCbackend, backend);
-    }
-
-    if(type == ALCbackend_Capture)
-    {
-        CaptureWrapper *backend;
-
-        NEW_OBJ(backend, CaptureWrapper)(device, funcs);
-        if(!backend) return NULL;
-
-        return STATIC_CAST(ALCbackend, backend);
-    }
-
-    return NULL;
-}
diff --git a/Alc/backends/base.h b/Alc/backends/base.h
index 961a4d1a..8464fdee 100644
--- a/Alc/backends/base.h
+++ b/Alc/backends/base.h
@@ -142,6 +142,7 @@ ALCbackendFactory *ALCossBackendFactory_getFactory(void);
 ALCbackendFactory *ALCjackBackendFactory_getFactory(void);
 ALCbackendFactory *ALCsolarisBackendFactory_getFactory(void);
 ALCbackendFactory *ALCsndioBackendFactory_getFactory(void);
+ALCbackendFactory *ALCqsaBackendFactory_getFactory(void);
 ALCbackendFactory *ALCmmdevBackendFactory_getFactory(void);
 ALCbackendFactory *ALCdsoundBackendFactory_getFactory(void);
 ALCbackendFactory *ALCwinmmBackendFactory_getFactory(void);
@@ -151,6 +152,4 @@ ALCbackendFactory *ALCnullBackendFactory_getFactory(void);
 ALCbackendFactory *ALCwaveBackendFactory_getFactory(void);
 ALCbackendFactory *ALCloopbackFactory_getFactory(void);
 
-ALCbackend *create_backend_wrapper(ALCdevice *device, const BackendFuncs *funcs, ALCbackend_Type type);
-
 #endif /* AL_BACKENDS_BASE_H */
diff --git a/Alc/backends/qsa.c b/Alc/backends/qsa.c
index 9da55b59..15c264aa 100644
--- a/Alc/backends/qsa.c
+++ b/Alc/backends/qsa.c
@@ -853,27 +853,145 @@ static ALCenum qsa_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint s
     return ALC_NO_ERROR;
 }
 
-static const BackendFuncs qsa_funcs= {
-    qsa_open_playback,
-    qsa_close_playback,
-    qsa_reset_playback,
-    qsa_start_playback,
-    qsa_stop_playback,
-    qsa_open_capture,
-    qsa_close_capture,
-    qsa_start_capture,
-    qsa_stop_capture,
-    qsa_capture_samples,
-    qsa_available_samples
-};
 
-ALCboolean alc_qsa_init(BackendFuncs* func_list)
+/* Wrappers to use an old-style backend with the new interface. */
+typedef struct PlaybackWrapper {
+    DERIVE_FROM_TYPE(ALCbackend);
+} PlaybackWrapper;
+
+static void PlaybackWrapper_Construct(PlaybackWrapper *self, ALCdevice *device);
+static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, void, Destruct)
+static ALCenum PlaybackWrapper_open(PlaybackWrapper *self, const ALCchar *name);
+static void PlaybackWrapper_close(PlaybackWrapper *self);
+static ALCboolean PlaybackWrapper_reset(PlaybackWrapper *self);
+static ALCboolean PlaybackWrapper_start(PlaybackWrapper *self);
+static void PlaybackWrapper_stop(PlaybackWrapper *self);
+static DECLARE_FORWARD2(PlaybackWrapper, ALCbackend, ALCenum, captureSamples, void*, ALCuint)
+static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, ALCuint, availableSamples)
+static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, ClockLatency, getClockLatency)
+static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, void, lock)
+static DECLARE_FORWARD(PlaybackWrapper, ALCbackend, void, unlock)
+DECLARE_DEFAULT_ALLOCATORS(PlaybackWrapper)
+DEFINE_ALCBACKEND_VTABLE(PlaybackWrapper);
+
+static void PlaybackWrapper_Construct(PlaybackWrapper *self, ALCdevice *device)
+{
+    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
+    SET_VTABLE2(PlaybackWrapper, ALCbackend, self);
+}
+
+static ALCenum PlaybackWrapper_open(PlaybackWrapper *self, const ALCchar *name)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return qsa_open_playback(device, name);
+}
+
+static void PlaybackWrapper_close(PlaybackWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    qsa_close_playback(device);
+}
+
+static ALCboolean PlaybackWrapper_reset(PlaybackWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return qsa_reset_playback(device);
+}
+
+static ALCboolean PlaybackWrapper_start(PlaybackWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return qsa_start_playback(device);
+}
+
+static void PlaybackWrapper_stop(PlaybackWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    qsa_stop_playback(device);
+}
+
+
+typedef struct CaptureWrapper {
+    DERIVE_FROM_TYPE(ALCbackend);
+} CaptureWrapper;
+
+static void CaptureWrapper_Construct(CaptureWrapper *self, ALCdevice *device);
+static DECLARE_FORWARD(CaptureWrapper, ALCbackend, void, Destruct)
+static ALCenum CaptureWrapper_open(CaptureWrapper *self, const ALCchar *name);
+static void CaptureWrapper_close(CaptureWrapper *self);
+static DECLARE_FORWARD(CaptureWrapper, ALCbackend, ALCboolean, reset)
+static ALCboolean CaptureWrapper_start(CaptureWrapper *self);
+static void CaptureWrapper_stop(CaptureWrapper *self);
+static ALCenum CaptureWrapper_captureSamples(CaptureWrapper *self, void *buffer, ALCuint samples);
+static ALCuint CaptureWrapper_availableSamples(CaptureWrapper *self);
+static DECLARE_FORWARD(CaptureWrapper, ALCbackend, ClockLatency, getClockLatency)
+static DECLARE_FORWARD(CaptureWrapper, ALCbackend, void, lock)
+static DECLARE_FORWARD(CaptureWrapper, ALCbackend, void, unlock)
+DECLARE_DEFAULT_ALLOCATORS(CaptureWrapper)
+DEFINE_ALCBACKEND_VTABLE(CaptureWrapper);
+
+static void CaptureWrapper_Construct(CaptureWrapper *self, ALCdevice *device)
+{
+    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
+    SET_VTABLE2(CaptureWrapper, ALCbackend, self);
+}
+
+static ALCenum CaptureWrapper_open(CaptureWrapper *self, const ALCchar *name)
 {
-    *func_list = qsa_funcs;
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return qsa_open_capture(device, name);
+}
+
+static void CaptureWrapper_close(CaptureWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    qsa_close_capture(device);
+}
+
+static ALCboolean CaptureWrapper_start(CaptureWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    qsa_start_capture(device);
     return ALC_TRUE;
 }
 
-void alc_qsa_deinit(void)
+static void CaptureWrapper_stop(CaptureWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    qsa_stop_capture(device);
+}
+
+static ALCenum CaptureWrapper_captureSamples(CaptureWrapper *self, void *buffer, ALCuint samples)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return qsa_capture_samples(device, buffer, samples);
+}
+
+static ALCuint CaptureWrapper_availableSamples(CaptureWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return qsa_available_samples(device);
+}
+
+
+typedef struct ALCqsaBackendFactory {
+    DERIVE_FROM_TYPE(ALCbackendFactory);
+} ALCqsaBackendFactory;
+#define ALCQSABACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCqsaBackendFactory, ALCbackendFactory) } }
+
+static ALCboolean ALCqsaBackendFactory_init(ALCqsaBackendFactory* UNUSED(self));
+static void ALCqsaBackendFactory_deinit(ALCqsaBackendFactory* UNUSED(self));
+static ALCboolean ALCqsaBackendFactory_querySupport(ALCqsaBackendFactory* UNUSED(self), ALCbackend_Type type);
+static void ALCqsaBackendFactory_probe(ALCqsaBackendFactory* UNUSED(self), enum DevProbe type);
+static ALCbackend* ALCqsaBackendFactory_createBackend(ALCqsaBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type);
+DEFINE_ALCBACKENDFACTORY_VTABLE(ALCqsaBackendFactory);
+
+static ALCboolean ALCqsaBackendFactory_init(ALCqsaBackendFactory* UNUSED(self))
+{
+    return ALC_TRUE;
+}
+
+static void ALCqsaBackendFactory_deinit(ALCqsaBackendFactory* UNUSED(self))
 {
 #define FREE_NAME(iter) free((iter)->name)
     VECTOR_FOR_EACH(DevMap, DeviceNameMap, FREE_NAME);
@@ -884,7 +1002,14 @@ void alc_qsa_deinit(void)
 #undef FREE_NAME
 }
 
-void alc_qsa_probe(enum DevProbe type)
+static ALCboolean ALCqsaBackendFactory_querySupport(ALCqsaBackendFactory* UNUSED(self), ALCbackend_Type type)
+{
+    if(type == ALCbackend_Playback || type == ALCbackend_Capture)
+        return ALC_TRUE;
+    return ALC_FALSE;
+}
+
+static void ALCqsaBackendFactory_probe(ALCqsaBackendFactory* UNUSED(self), enum DevProbe type)
 {
     switch (type)
     {
@@ -913,3 +1038,29 @@ void alc_qsa_probe(enum DevProbe type)
             break;
     }
 }
+
+static ALCbackend* ALCqsaBackendFactory_createBackend(ALCqsaBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
+{
+    if(type == ALCbackend_Playback)
+    {
+        PlaybackWrapper *backend;
+        NEW_OBJ(backend, PlaybackWrapper)(device);
+        if(!backend) return NULL;
+        return STATIC_CAST(ALCbackend, backend);
+    }
+    if(type == ALCbackend_Capture)
+    {
+        CaptureWrapper *backend;
+        NEW_OBJ(backend, CaptureWrapper)(device);
+        if(!backend) return NULL;
+        return STATIC_CAST(ALCbackend, backend);
+    }
+
+    return NULL;
+}
+
+ALCbackendFactory *ALCqsaBackendFactory_getFactory(void)
+{
+    static ALCqsaBackendFactory factory = ALCQSABACKENDFACTORY_INITIALIZER;
+    return STATIC_CAST(ALCbackendFactory, &factory);
+}
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index e5dd8c26..8cedee94 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -436,25 +436,6 @@ enum DevProbe {
     CAPTURE_DEVICE_PROBE
 };
 
-typedef struct {
-    ALCenum (*OpenPlayback)(ALCdevice*, const ALCchar*);
-    void (*ClosePlayback)(ALCdevice*);
-    ALCboolean (*ResetPlayback)(ALCdevice*);
-    ALCboolean (*StartPlayback)(ALCdevice*);
-    void (*StopPlayback)(ALCdevice*);
-
-    ALCenum (*OpenCapture)(ALCdevice*, const ALCchar*);
-    void (*CloseCapture)(ALCdevice*);
-    void (*StartCapture)(ALCdevice*);
-    void (*StopCapture)(ALCdevice*);
-    ALCenum (*CaptureSamples)(ALCdevice*, void*, ALCuint);
-    ALCuint (*AvailableSamples)(ALCdevice*);
-} BackendFuncs;
-
-ALCboolean alc_qsa_init(BackendFuncs *func_list);
-void alc_qsa_deinit(void);
-void alc_qsa_probe(enum DevProbe type);
-
 struct ALCbackend;