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diff --git a/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h b/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h
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-/*
- * Copyright 2010, The Android Open Source Project
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef BackedDoubleBufferedTexture_h
-#define BackedDoubleBufferedTexture_h
-
-#include "DoubleBufferedTexture.h"
-#include "GLWebViewState.h"
-#include "TextureOwner.h"
-#include <SkBitmap.h>
-
-class SkCanvas;
-
-namespace WebCore {
-
-class BaseTile;
-
-class TextureTileInfo {
- public:
- TextureTileInfo()
- : m_x(-1)
- , m_y(-1)
- , m_layerId(-1)
- , m_scale(0)
- , m_texture(0)
- , m_picture(0)
- {
- }
- int m_x;
- int m_y;
- int m_layerId;
- float m_scale;
- TextureInfo* m_texture;
- unsigned int m_picture;
-};
-
-// DoubleBufferedTexture using a SkBitmap as backing mechanism
-class BackedDoubleBufferedTexture : public DoubleBufferedTexture {
-public:
- // This object is to be constructed on the consumer's thread and must have
- // a width and height greater than 0.
- BackedDoubleBufferedTexture(uint32_t w, uint32_t h,
- SkBitmap* bitmap = 0,
- SkBitmap::Config config = SkBitmap::kARGB_8888_Config);
- virtual ~BackedDoubleBufferedTexture();
-
- // these functions override their parent
- virtual TextureInfo* producerLock();
- virtual void producerRelease();
- virtual void producerReleaseAndSwap();
-
- // updates the texture with current bitmap and releases (and if needed also
- // swaps) the texture.
- virtual void producerUpdate(TextureInfo* textureInfo);
- void producerUpdate(TextureInfo* textureInfo, SkBitmap* bitmap, SkIRect& rect);
- bool textureExist(TextureInfo* textureInfo);
-
- // The level can be one of the following values:
- // * -1 for an unused texture.
- // * 0 for the tiles intersecting with the viewport.
- // * n where n > 0 for the distance between the viewport and the tile.
- // We use this to prioritize the order in which we reclaim textures, see
- // TilesManager::getAvailableTexture() for more information.
- int usedLevel() { return m_usedLevel; }
- void setUsedLevel(int used) { m_usedLevel = used; }
-
- // allows consumer thread to assign ownership of the texture to the tile. It
- // returns false if ownership cannot be transferred because the tile is busy
- bool acquire(TextureOwner* owner, bool force = false);
- bool release(TextureOwner* owner);
- bool tryAcquire(TextureOwner* owner, TiledPage* currentPage, TiledPage* nextPage);
-
- // set the texture owner if not busy. Return false if busy, true otherwise.
- bool setOwner(TextureOwner* owner, bool force = false);
-
- // private member accessor functions
- TextureOwner* owner() { return m_owner; } // only used by the consumer thread
- TextureOwner* delayedReleaseOwner() { return m_delayedReleaseOwner; }
- SkCanvas* canvas(); // only used by the producer thread
- SkBitmap* bitmap() { return m_bitmap; }
-
- bool busy();
- void setNotBusy();
-
- const SkSize& getSize() const { return m_size; }
-
- void setTile(TextureInfo* info, int x, int y, float scale, unsigned int pictureCount);
- bool readyFor(BaseTile* baseTile);
-
-protected:
- HashMap<SharedTexture*, TextureTileInfo*> m_texturesInfo;
-
-private:
- void destroyTextures(SharedTexture** textures);
-
- SkBitmap* m_bitmap;
- bool m_sharedBitmap;
- SkSize m_size;
- SkCanvas* m_canvas;
- int m_usedLevel;
- SkBitmap::Config m_config;
- TextureOwner* m_owner;
-
- // When trying to release a texture, we may delay this if the texture is
- // currently used (busy being painted). We use the following two variables
- // to do so in setNotBusy()
- TextureOwner* m_delayedReleaseOwner;
- bool m_delayedRelease;
-
- // This values signals that the texture is currently in use by the consumer.
- // This allows us to prevent the owner of the texture from changing while the
- // consumer is holding a lock on the texture.
- bool m_busy;
- // We mutex protect the reads/writes of m_busy to ensure that we are reading
- // the most up-to-date value even across processors in an SMP system.
- android::Mutex m_busyLock;
- // We use this condition variable to signal that the texture
- // is not busy anymore
- android::Condition m_busyCond;
-};
-
-} // namespace WebCore
-
-#endif // BackedDoubleBufferedTexture_h