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#include "core/html/canvas/CanvasImageSource.h"
31#include "platform/graphics/GraphicsTypes3D.h"
32
33namespace blink {
34class WebGraphicsContext3D;
35}
36
37namespace blink {
38
39class ExceptionState;
40class HTMLImageLoader;
41class GraphicsContext;
42
43// GL types as defined in OpenGL ES 2.0 header file gl2.h from khronos.org.
44// That header cannot be included directly due to a conflict with NPAPI headers.
45// See crbug.com/328085.
46typedef unsigned GLenum;
47typedef int GC3Dint;
48
49class HTMLVideoElement FINAL : public HTMLMediaElement, public CanvasImageSource {
50    DEFINE_WRAPPERTYPEINFO();
51public:
52    static PassRefPtrWillBeRawPtr<HTMLVideoElement> create(Document&);
53    virtual void trace(Visitor*) OVERRIDE;
54
55    unsigned videoWidth() const;
56    unsigned videoHeight() const;
57
58    // Fullscreen
59    void webkitEnterFullscreen(ExceptionState&);
60    void webkitExitFullscreen();
61    bool webkitSupportsFullscreen();
62    bool webkitDisplayingFullscreen();
63
64    // Statistics
65    unsigned webkitDecodedFrameCount() const;
66    unsigned webkitDroppedFrameCount() const;
67
68    // Used by canvas to gain raw pixel access
69    void paintCurrentFrameInContext(GraphicsContext*, const IntRect&) const;
70
71    // Used by WebGL to do GPU-GPU textures copy if possible.
72    // See more details at MediaPlayer::copyVideoTextureToPlatformTexture() defined in Source/WebCore/platform/graphics/MediaPlayer.h.
73    bool copyVideoTextureToPlatformTexture(WebGraphicsContext3D*, Platform3DObject texture, GC3Dint level, GLenum internalFormat, GLenum type, bool premultiplyAlpha, bool flipY);
74
75    bool shouldDisplayPosterImage() const { return displayMode() == Poster || displayMode() == PosterWaitingForVideo; }
76
77    KURL posterImageURL() const;
78
79    // FIXME: Remove this when WebMediaPlayerClientImpl::loadInternal does not depend on it.
80    virtual KURL mediaPlayerPosterURL() OVERRIDE;
81
82    // CanvasImageSource implementation
83    virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const OVERRIDE;
84    virtual bool isVideoElement() const OVERRIDE { return true; }
85    virtual bool wouldTaintOrigin(SecurityOrigin*) const OVERRIDE;
86    virtual FloatSize sourceSize() const OVERRIDE;
87    virtual const KURL& sourceURL() const OVERRIDE { return currentSrc(); }
88
89    virtual bool isHTMLVideoElement() const OVERRIDE { return true; }
90
91private:
92    HTMLVideoElement(Document&);
93
94    virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
95    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
96    virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
97    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
98    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
99    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
100    virtual bool hasVideo() const OVERRIDE { return webMediaPlayer() && webMediaPlayer()->hasVideo(); }
101    bool supportsFullscreen() const;
102    virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
103    virtual const AtomicString imageSourceURL() const OVERRIDE;
104
105    bool hasAvailableVideoFrame() const;
106    virtual void updateDisplayState() OVERRIDE;
107    virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
108    virtual void setDisplayMode(DisplayMode) OVERRIDE;
109
110    OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
111
112    AtomicString m_defaultPosterURL;
113};
114
115} // namespace blink
116
117#endif // HTMLVideoElement_h
118