1 files changed, 153 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/nine/iunknown.h b/src/gallium/state_trackers/nine/iunknown.h
new file mode 100644
index 00000000000..4c83ddd8e4e
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+++ b/src/gallium/state_trackers/nine/iunknown.h
@@ -0,0 +1,153 @@
+/*
+ * 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. */
+
+#ifndef _NINE_IUNKNOWN_H_
+#define _NINE_IUNKNOWN_H_
+
+#include "pipe/p_compiler.h"
+
+#include "util/u_memory.h"
+
+#include "guid.h"
+#include "nine_debug.h"
+#include "nine_quirk.h"
+
+#include "d3d9.h"
+
+struct Nine9;
+struct NineDevice9;
+
+struct NineUnknown
+{
+    /* pointer to vtable  */
+    void *vtable;
+
+    int32_t refs; /* external reference count */
+    int32_t bind; /* internal bind count */
+    boolean forward; /* whether to forward references to the container */
+
+    struct NineUnknown *container; /* referenced if (refs | bind) */
+    struct NineDevice9 *device;    /* referenced if (refs) */
+
+    const GUID **guids; /* for QueryInterface */
+
+    void (*dtor)(void *data); /* top-level dtor */
+};
+static INLINE struct NineUnknown *
+NineUnknown( void *data )
+{
+    return (struct NineUnknown *)data;
+}
+
+/* Use this instead of a shitload of arguments: */
+struct NineUnknownParams
+{
+    void *vtable;
+    const GUID **guids;
+    void (*dtor)(void *data);
+    struct NineUnknown *container;
+    struct NineDevice9 *device;
+};
+
+HRESULT
+NineUnknown_ctor( struct NineUnknown *This,
+                  struct NineUnknownParams *pParams );
+
+void
+NineUnknown_dtor( struct NineUnknown *This );
+
+/*** Direct3D public methods ***/
+
+HRESULT WINAPI
+NineUnknown_QueryInterface( struct NineUnknown *This,
+                            REFIID riid,
+                            void **ppvObject );
+
+ULONG WINAPI
+NineUnknown_AddRef( struct NineUnknown *This );
+
+ULONG WINAPI
+NineUnknown_Release( struct NineUnknown *This );
+
+HRESULT WINAPI
+NineUnknown_GetDevice( struct NineUnknown *This,
+                       IDirect3DDevice9 **ppDevice );
+
+/*** Nine private methods ***/
+
+static INLINE void
+NineUnknown_Destroy( struct NineUnknown *This )
+{
+    assert(!(This->refs | This->bind));
+    This->dtor(This);
+}
+
+static INLINE UINT
+NineUnknown_Bind( struct NineUnknown *This )
+{
+    UINT b = ++This->bind;
+    assert(b);
+    if (b == 1 && This->container) {
+        if (This->container != NineUnknown(This->device))
+            NineUnknown_Bind(This->container);
+    }
+    return b;
+}
+
+static INLINE UINT
+NineUnknown_Unbind( struct NineUnknown *This )
+{
+    UINT b = --This->bind;
+    if (!b) {
+        if (This->container) {
+            if (This->container != NineUnknown(This->device))
+                NineUnknown_Unbind(This->container);
+        } else
+        if (This->refs == 0) {
+            This->dtor(This);
+        }
+    }
+    return b;
+}
+
+static INLINE void
+NineUnknown_ConvertRefToBind( struct NineUnknown *This )
+{
+    NineUnknown_Bind(This);
+    NineUnknown_Release(This);
+}
+
+/* Detach from container. */
+static INLINE void
+NineUnknown_Detach( struct NineUnknown *This )
+{
+    assert(This->container && !This->forward);
+    if (This->refs)
+        NineUnknown_Unbind(This->container);
+    if (This->bind)
+        NineUnknown_Unbind(This->container);
+    This->container = NULL;
+    if (!(This->refs | This->bind))
+        This->dtor(This);
+}
+
+#endif /* _NINE_IUNKNOWN_H_ */