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// 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 "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
};
enum UIResourceWrapMode {
CLAMP_TO_EDGE,
REPEAT
};
gfx::Size GetSize() const { return size_; }
UIResourceFormat GetFormat() const { return format_; }
UIResourceWrapMode GetWrapMode() const { return wrap_mode_; }
void SetWrapMode(UIResourceWrapMode wrap_mode) { wrap_mode_ = wrap_mode; }
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();
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_;
UIResourceWrapMode wrap_mode_;
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_
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