diff options
Diffstat (limited to 'WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h')
-rw-r--r-- | WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h b/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h deleted file mode 100644 index 7c2ea90..0000000 --- a/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.h +++ /dev/null @@ -1,146 +0,0 @@ -/* - * 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 |