1 files changed, 126 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/nine/iunknown.c b/src/gallium/state_trackers/nine/iunknown.c
new file mode 100644
index 00000000000..aff8041ec64
--- /dev/null
+++ b/src/gallium/state_trackers/nine/iunknown.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2011 Joakim Sindholt <[email protected]>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#include "iunknown.h"
+#include "util/u_atomic.h"
+#include "nine_helpers.h"
+
+#define DBG_CHANNEL DBG_UNKNOWN
+
+HRESULT
+NineUnknown_ctor( struct NineUnknown *This,
+                  struct NineUnknownParams *pParams )
+{
+    This->refs = pParams->container ? 0 : 1;
+    This->bind = 0;
+    This->forward = !This->refs;
+    This->container = pParams->container;
+    This->device = pParams->device;
+    if (This->refs && This->device)
+        NineUnknown_AddRef(NineUnknown(This->device));
+
+    This->vtable = pParams->vtable;
+    This->guids = pParams->guids;
+    This->dtor = pParams->dtor;
+
+    return D3D_OK;
+}
+
+void
+NineUnknown_dtor( struct NineUnknown *This )
+{
+    FREE(This);
+}
+
+HRESULT WINAPI
+NineUnknown_QueryInterface( struct NineUnknown *This,
+                            REFIID riid,
+                            void **ppvObject )
+{
+    unsigned i = 0;
+
+    if (!ppvObject) return E_POINTER;
+
+    do {
+        if (GUID_equal(This->guids[i], riid)) {
+            *ppvObject = This;
+            assert(This->refs);
+            NineUnknown_AddRef(This);
+            return S_OK;
+        }
+    } while (This->guids[++i]);
+
+    *ppvObject = NULL;
+    return E_NOINTERFACE;
+}
+
+ULONG WINAPI
+NineUnknown_AddRef( struct NineUnknown *This )
+{
+    ULONG r;
+    if (This->forward)
+        return NineUnknown_AddRef(This->container);
+    else
+        r = p_atomic_inc_return(&This->refs);
+
+    if (r == 1) {
+        if (This->device)
+            NineUnknown_AddRef(NineUnknown(This->device));
+        /* This shouldn't be necessary:
+        if (This->container)
+            NineUnknown_Bind(NineUnknown(This->container)); */
+    }
+    return r;
+}
+
+ULONG WINAPI
+NineUnknown_Release( struct NineUnknown *This )
+{
+    if (This->forward)
+        return NineUnknown_Release(This->container);
+
+    ULONG r = p_atomic_dec_return(&This->refs);
+
+    if (r == 0) {
+        if (This->device) {
+            if (NineUnknown_Release(NineUnknown(This->device)) == 0)
+                return r; /* everything's gone */
+        }
+        if (This->container) {
+            /* NineUnknown_Unbind(NineUnknown(This->container)); */
+        } else
+        if (This->bind == 0) {
+            This->dtor(This);
+        }
+    }
+    return r;
+}
+
+HRESULT WINAPI
+NineUnknown_GetDevice( struct NineUnknown *This,
+                       IDirect3DDevice9 **ppDevice )
+{
+    user_assert(ppDevice, E_POINTER);
+    NineUnknown_AddRef(NineUnknown(This->device));
+    *ppDevice = (IDirect3DDevice9 *)This->device;
+    return D3D_OK;
+}