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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* document) { return create(HTMLNames::videoTag, document, false); }
     39     static PassRefPtr<HTMLVideoElement> create(const QualifiedName&, Document*, bool);
     40 
     41     unsigned width() const;
     42     unsigned height() const;
     43 
     44     unsigned videoWidth() const;
     45     unsigned videoHeight() const;
     46 
     47     // Fullscreen
     48     void webkitEnterFullscreen(ExceptionState&);
     49     void webkitExitFullscreen();
     50     bool webkitSupportsFullscreen();
     51     bool webkitDisplayingFullscreen();
     52 
     53     // FIXME: Maintain "FullScreen" capitalization scheme for backwards compatibility.
     54     // https://bugs.webkit.org/show_bug.cgi?id=36081
     55     void webkitEnterFullScreen(ExceptionState& es) { webkitEnterFullscreen(es); }
     56     void webkitExitFullScreen() { webkitExitFullscreen(); }
     57 
     58     // Statistics
     59     unsigned webkitDecodedFrameCount() const;
     60     unsigned webkitDroppedFrameCount() const;
     61 
     62     // Used by canvas to gain raw pixel access
     63     void paintCurrentFrameInContext(GraphicsContext*, const IntRect&);
     64 
     65     // Used by WebGL to do GPU-GPU textures copy if possible.
     66     // See more details at MediaPlayer::copyVideoTextureToPlatformTexture() defined in Source/WebCore/platform/graphics/MediaPlayer.h.
     67     bool copyVideoTextureToPlatformTexture(GraphicsContext3D*, Platform3DObject texture, GC3Dint level, GC3Denum type, GC3Denum internalFormat, bool premultiplyAlpha, bool flipY);
     68 
     69     bool shouldDisplayPosterImage() const { return displayMode() == Poster || displayMode() == PosterWaitingForVideo; }
     70 
     71     KURL posterImageURL() const;
     72 
     73 private:
     74     HTMLVideoElement(const QualifiedName&, Document*, bool);
     75 
     76     virtual bool rendererIsNeeded(const NodeRenderingContext&);
     77     virtual RenderObject* createRenderer(RenderStyle*);
     78     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     79     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     80     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     81     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
     82     virtual bool isVideo() const { return true; }
     83     virtual bool hasVideo() const { return player() && player()->hasVideo(); }
     84     virtual bool supportsFullscreen() const;
     85     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     86     virtual const AtomicString& imageSourceURL() const OVERRIDE;
     87 
     88     virtual bool hasAvailableVideoFrame() const;
     89     virtual void updateDisplayState();
     90     virtual void didMoveToNewDocument(Document* oldDocument) OVERRIDE;
     91     virtual void setDisplayMode(DisplayMode);
     92 
     93     OwnPtr<HTMLImageLoader> m_imageLoader;
     94 
     95     AtomicString m_defaultPosterURL;
     96 };
     97 
     98 inline bool isHTMLVideoElement(const Node* node)
     99 {
    100     return node->hasTagName(HTMLNames::videoTag);
    101 }
    102 
    103 inline bool isHTMLVideoElement(const Element* element)
    104 {
    105     return element->hasTagName(HTMLNames::videoTag);
    106 }
    107 
    108 inline HTMLVideoElement* toHTMLVideoElement(Node* node)
    109 {
    110     ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLVideoElement(node));
    111     return static_cast<HTMLVideoElement*>(node);
    112 }
    113 
    114 } //namespace
    115 
    116 #endif
    117