| // 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 <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/memory/ref_counted.h" |
| #include "cc/base/cc_export.h" |
| #include "skia/ext/refptr.h" |
| #include "third_party/skia/include/core/SkPixelRef.h" |
| #include "ui/gfx/geometry/size.h" |
| |
| class SkBitmap; |
| |
| namespace cc { |
| |
| class ETC1PixelRef; |
| |
| // A bitmap class that contains a ref-counted reference to a SkPixelRef that |
| // holds the content of the bitmap (cannot use SkBitmap because of ETC1). |
| // Thread-safety (by ways of SkPixelRef) ensures that both main and impl threads |
| // can hold references to the bitmap and that asynchronous uploads are allowed. |
| class CC_EXPORT UIResourceBitmap { |
| public: |
| enum UIResourceFormat { |
| RGBA8, |
| ALPHA_8, |
| ETC1 |
| }; |
| |
| gfx::Size GetSize() const { return size_; } |
| UIResourceFormat GetFormat() const { return format_; } |
| bool GetOpaque() const { return opaque_; } |
| void SetOpaque(bool opaque) { opaque_ = opaque; } |
| |
| // User must ensure that |skbitmap| is immutable. The SkBitmap Format should |
| // be 32-bit RGBA or 8-bit ALPHA. |
| explicit UIResourceBitmap(const SkBitmap& skbitmap); |
| UIResourceBitmap(const gfx::Size& size, bool is_opaque); |
| UIResourceBitmap(const skia::RefPtr<SkPixelRef>& pixel_ref, |
| const gfx::Size& size); |
| UIResourceBitmap(const UIResourceBitmap& other); |
| ~UIResourceBitmap(); |
| |
| private: |
| friend class AutoLockUIResourceBitmap; |
| |
| void Create(const skia::RefPtr<SkPixelRef>& pixel_ref, |
| const gfx::Size& size, |
| UIResourceFormat format); |
| |
| skia::RefPtr<SkPixelRef> pixel_ref_; |
| UIResourceFormat format_; |
| gfx::Size size_; |
| bool opaque_; |
| }; |
| |
| class CC_EXPORT AutoLockUIResourceBitmap { |
| public: |
| explicit AutoLockUIResourceBitmap(const UIResourceBitmap& bitmap); |
| ~AutoLockUIResourceBitmap(); |
| const uint8_t* GetPixels() const; |
| |
| private: |
| const UIResourceBitmap& bitmap_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_RESOURCES_UI_RESOURCE_BITMAP_H_ |