Move ALCbackend base stuff to a separate file

2 files changed, 124 insertions, 0 deletions

diff --git a/Alc/backends/base.c b/Alc/backends/base.c
new file mode 100644
index 00000000..70f7a181
--- /dev/null
+++ b/Alc/backends/base.c
@@ -0,0 +1,122 @@
+
+#include "config.h"
+
+#include <stdlib.h>
+
+#include "alMain.h"
+
+#include "backends/base.h"
+
+
+/* Base ALCbackend method implementations. */
+void ALCbackend_Construct(ALCbackend *self, ALCdevice *device)
+{
+    self->mDevice = device;
+    InitializeCriticalSection(&self->mMutex);
+}
+
+void ALCbackend_Destruct(ALCbackend *self)
+{
+    DeleteCriticalSection(&self->mMutex);
+}
+
+ALint64 ALCbackend_getLatency(ALCbackend* UNUSED(self))
+{
+    return 0;
+}
+
+void ALCbackend_lock(ALCbackend *self)
+{
+    EnterCriticalSection(&self->mMutex);
+}
+
+void ALCbackend_unlock(ALCbackend *self)
+{
+    LeaveCriticalSection(&self->mMutex);
+}
+
+
+/* Wrapper to use an old-style backend with the new interface. */
+typedef struct BackendWrapper {
+    DERIVE_FROM_TYPE(ALCbackend);
+} BackendWrapper;
+#define BACKENDWRAPPER_INITIALIZER { { GET_VTABLE2(ALCbackend, BackendWrapper) } }
+
+static void BackendWrapper_Construct(BackendWrapper *self, ALCdevice *device)
+{
+    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
+}
+
+static void BackendWrapper_Destruct(BackendWrapper *self)
+{
+    ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
+}
+
+static ALCenum BackendWrapper_open(BackendWrapper *self, const ALCchar *name)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return device->Funcs->OpenPlayback(device, name);
+}
+
+static void BackendWrapper_close(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    device->Funcs->ClosePlayback(device);
+}
+
+static ALCboolean BackendWrapper_reset(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return device->Funcs->ResetPlayback(device);
+}
+
+static ALCboolean BackendWrapper_start(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return device->Funcs->StartPlayback(device);
+}
+
+static void BackendWrapper_stop(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    device->Funcs->StopPlayback(device);
+}
+
+static ALint64 BackendWrapper_getLatency(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return device->Funcs->GetLatency(device);
+}
+
+static void BackendWrapper_lock(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return device->Funcs->Lock(device);
+}
+
+static void BackendWrapper_unlock(BackendWrapper *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    return device->Funcs->Unlock(device);
+}
+
+static void BackendWrapper_Delete(BackendWrapper *self)
+{
+    free(self);
+}
+
+DEFINE_ALCBACKEND_VTABLE(BackendWrapper);
+
+
+ALCbackend *create_backend_wrapper(ALCdevice *device)
+{
+    BackendWrapper *backend;
+
+    backend = malloc(sizeof(*backend));
+    if(!backend) return NULL;
+    SET_VTABLE2(BackendWrapper, ALCbackend, backend);
+
+    BackendWrapper_Construct(backend, device);
+
+    return STATIC_CAST(ALCbackend, backend);
+}
diff --git a/Alc/backends/base.h b/Alc/backends/base.h
index 22602b23..a118c82e 100644
--- a/Alc/backends/base.h
+++ b/Alc/backends/base.h
@@ -122,4 +122,6 @@ static const struct ALCbackendFactoryVtable T##_ALCbackendFactory_vtable = {  \
 
 ALCbackendFactory *ALCnullBackendFactory_getFactory(void);
 
+ALCbackend *create_backend_wrapper(ALCdevice *device);
+
 #endif /* AL_BACKENDS_BASE_H */