text: /*
   * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 HTMLVideoElement_h
  #define HTMLVideoElement_h
  
  #include "core/CoreExport.h"
  #include "core/html/HTMLImageLoader.h"
  #include "core/html/HTMLMediaElement.h"
  #include "core/html/canvas/CanvasImageSource.h"
  #include "core/imagebitmap/ImageBitmapSource.h"
  #include "third_party/khronos/GLES2/gl2.h"
  
  class SkPaint;
  
  namespace gpu {
  namespace gles2 {
  class GLES2Interface;
  }
  }
  
  namespace blink {
  class ExceptionState;
  class GraphicsContext;
  class ImageBitmapOptions;
  
  class CORE_EXPORT HTMLVideoElement final : public HTMLMediaElement, public CanvasImageSource, public ImageBitmapSource {
      DEFINE_WRAPPERTYPEINFO();
  public:
      static HTMLVideoElement* create(Document&);
      DECLARE_VIRTUAL_TRACE();
  
      unsigned videoWidth() const;
      unsigned videoHeight() const;
  
      // Fullscreen
      void webkitEnterFullscreen();
      void webkitExitFullscreen();
      bool webkitSupportsFullscreen();
      bool webkitDisplayingFullscreen();
      bool usesOverlayFullscreenVideo() const override;
  
      // Statistics
      unsigned webkitDecodedFrameCount() const;
      unsigned webkitDroppedFrameCount() const;
  
      // Used by canvas to gain raw pixel access
      void paintCurrentFrame(SkCanvas*, const IntRect&, const SkPaint*) const;
  
      // Used by WebGL to do GPU-GPU textures copy if possible.
      bool copyVideoTextureToPlatformTexture(gpu::gles2::GLES2Interface*, GLuint texture, GLenum internalFormat, GLenum type, bool premultiplyAlpha, bool flipY);
  
      bool shouldDisplayPosterImage() const { return getDisplayMode() == Poster; }
  
      bool hasAvailableVideoFrame() const;
  
      KURL posterImageURL() const override;
  
      // CanvasImageSource implementation
      PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*, AccelerationHint, SnapshotReason, const FloatSize&) const override;
      bool isVideoElement() const override { return true; }
      bool wouldTaintOrigin(SecurityOrigin*) const override;
      FloatSize elementSize(const FloatSize&) const override;
      const KURL& sourceURL() const override { return currentSrc(); }
  
      bool isHTMLVideoElement() const override { return true; }
  
      // ImageBitmapSource implementation
      IntSize bitmapSourceSize() const override;
      ScriptPromise createImageBitmap(ScriptState*, EventTarget&, int sx, int sy, int sw, int sh, const ImageBitmapOptions&, ExceptionState&) override;
  
  private:
      HTMLVideoElement(Document&);
  
      bool layoutObjectIsNeeded(const ComputedStyle&) override;
      LayoutObject* createLayoutObject(const ComputedStyle&) override;
      void attach(const AttachContext& = AttachContext()) override;
      void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
      bool isPresentationAttribute(const QualifiedName&) const override;
      void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
      bool isURLAttribute(const Attribute&) const override;
      const AtomicString imageSourceURL() const override;
  
      void updateDisplayState() override;
      void didMoveToNewDocument(Document& oldDocument) override;
      void setDisplayMode(DisplayMode) override;
  
      Member<HTMLImageLoader> m_imageLoader;
  
      AtomicString m_defaultPosterURL;
  };
  
  } // namespace blink
  
  #endif // HTMLVideoElement_h
  