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      1 /*
      2  * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef HTMLVideoElement_h
     27 #define HTMLVideoElement_h
     28 
     29 #include "core/html/HTMLMediaElement.h"
     30 
     31 namespace WebCore {
     32 
     33 class ExceptionState;
     34 class HTMLImageLoader;
     35 
     36 class HTMLVideoElement FINAL : public HTMLMediaElement {
     37 public:
     38     static PassRefPtr<HTMLVideoElement> create(Document&, bool createdByParser = false);
     39 
     40     unsigned videoWidth() const;
     41     unsigned videoHeight() const;
     42 
     43     // Fullscreen
     44     void webkitEnterFullscreen(ExceptionState&);
     45     void webkitExitFullscreen();
     46     bool webkitSupportsFullscreen();
     47     bool webkitDisplayingFullscreen();
     48 
     49     // Statistics
     50     unsigned webkitDecodedFrameCount() const;
     51     unsigned webkitDroppedFrameCount() const;
     52 
     53     // Used by canvas to gain raw pixel access
     54     void paintCurrentFrameInContext(GraphicsContext*, const IntRect&);
     55 
     56     // Used by WebGL to do GPU-GPU textures copy if possible.
     57     // See more details at MediaPlayer::copyVideoTextureToPlatformTexture() defined in Source/WebCore/platform/graphics/MediaPlayer.h.
     58     bool copyVideoTextureToPlatformTexture(GraphicsContext3D*, Platform3DObject texture, GC3Dint level, GC3Denum type, GC3Denum internalFormat, bool premultiplyAlpha, bool flipY);
     59 
     60     bool shouldDisplayPosterImage() const { return displayMode() == Poster || displayMode() == PosterWaitingForVideo; }
     61 
     62     KURL posterImageURL() const;
     63 
     64 private:
     65     HTMLVideoElement(Document&, bool);
     66 
     67     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
     68     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
     69     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     70     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     71     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     72     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
     73     virtual bool isVideo() const OVERRIDE { return true; }
     74     virtual bool hasVideo() const OVERRIDE { return player() && player()->hasVideo(); }
     75     virtual bool supportsFullscreen() const OVERRIDE;
     76     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     77     virtual const AtomicString imageSourceURL() const OVERRIDE;
     78 
     79     bool hasAvailableVideoFrame() const;
     80     virtual void updateDisplayState() OVERRIDE;
     81     virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
     82     virtual void setDisplayMode(DisplayMode) OVERRIDE;
     83 
     84     OwnPtr<HTMLImageLoader> m_imageLoader;
     85 
     86     AtomicString m_defaultPosterURL;
     87 };
     88 
     89 inline bool isHTMLVideoElement(const Node* node)
     90 {
     91     return node->hasTagName(HTMLNames::videoTag);
     92 }
     93 
     94 inline bool isHTMLVideoElement(const Element* element)
     95 {
     96     return element->hasTagName(HTMLNames::videoTag);
     97 }
     98 
     99 DEFINE_NODE_TYPE_CASTS(HTMLVideoElement, hasTagName(HTMLNames::videoTag));
    100 
    101 } //namespace
    102 
    103 #endif
    104