UI Resource Manager

cc/resources/ui_resource_bitmap.h

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_RESOURCES_UI_RESOURCE_BITMAP_H_
+#define CC_RESOURCES_UI_RESOURCE_BITMAP_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/base/cc_export.h"
+#include "third_party/skia/include/core/SkTypes.h"
+#include "ui/gfx/size.h"
+
+namespace cc {
+
+// Ref-counted bitmap class (can’t use SkBitmap because of ETC1).  Thread-safety
+// ensures that both main and impl threads can hold references to the bitmap and
+// that asynchronous uploads are allowed.
+class CC_EXPORT UIResourceBitmap
+    : public base::RefCountedThreadSafe<UIResourceBitmap> {
+ public:
+  enum UIResourceFormat {
+    RGBA8
+  };
+
+  // Takes ownership of “pixels”.
+  static scoped_refptr<UIResourceBitmap> Create(uint8_t* pixels,
+                                                UIResourceFormat format,
+                                                gfx::Size size);
+
+  gfx::Size GetSize() const { return size_; }
+  UIResourceFormat GetFormat() const { return format_; }
+  uint8_t* GetPixels() { return pixels_.get(); }
+
+ private:
+  friend class base::RefCountedThreadSafe<UIResourceBitmap>;
+
+  UIResourceBitmap();
+  ~UIResourceBitmap();
+
+  scoped_ptr<uint8_t[]> pixels_;
+  UIResourceFormat format_;
+  gfx::Size size_;
+
+  DISALLOW_COPY_AND_ASSIGN(UIResourceBitmap);
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_UI_RESOURCE_BITMAP_H_