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27 #include "core/html/HTMLVideoElement.h"
29 #include "bindings/core/v8/ExceptionState.h"
30 #include "core/CSSPropertyNames.h"
31 #include "core/HTMLNames.h"
32 #include "core/dom/Attribute.h"
33 #include "core/dom/Document.h"
34 #include "core/dom/ExceptionCode.h"
35 #include "core/dom/shadow/ShadowRoot.h"
36 #include "core/frame/Settings.h"
37 #include "core/html/HTMLImageLoader.h"
38 #include "core/html/canvas/CanvasRenderingContext.h"
39 #include "core/html/parser/HTMLParserIdioms.h"
40 #include "core/rendering/RenderImage.h"
41 #include "core/rendering/RenderVideo.h"
42 #include "platform/UserGestureIndicator.h"
43 #include "platform/graphics/GraphicsContext.h"
44 #include "platform/graphics/gpu/Extensions3DUtil.h"
45 #include "public/platform/WebCanvas.h"
46 #include "public/platform/WebGraphicsContext3D.h"
50 using namespace HTMLNames;
52 inline HTMLVideoElement::HTMLVideoElement(Document& document)
53 : HTMLMediaElement(videoTag, document)
55 ScriptWrappable::init(this);
56 if (document.settings())
57 m_defaultPosterURL = AtomicString(document.settings()->defaultVideoPosterURL());
60 PassRefPtrWillBeRawPtr<HTMLVideoElement> HTMLVideoElement::create(Document& document)
62 RefPtrWillBeRawPtr<HTMLVideoElement> video = adoptRefWillBeNoop(new HTMLVideoElement(document));
63 video->ensureUserAgentShadowRoot();
64 video->suspendIfNeeded();
65 return video.release();
68 void HTMLVideoElement::trace(Visitor* visitor)
70 visitor->trace(m_imageLoader);
71 HTMLMediaElement::trace(visitor);
74 bool HTMLVideoElement::rendererIsNeeded(const RenderStyle& style)
76 return HTMLElement::rendererIsNeeded(style);
79 RenderObject* HTMLVideoElement::createRenderer(RenderStyle*)
81 return new RenderVideo(this);
84 void HTMLVideoElement::attach(const AttachContext& context)
86 HTMLMediaElement::attach(context);
89 if (shouldDisplayPosterImage()) {
91 m_imageLoader = HTMLImageLoader::create(this);
92 m_imageLoader->updateFromElement();
94 toRenderImage(renderer())->imageResource()->setImageResource(m_imageLoader->image());
98 void HTMLVideoElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
100 if (name == widthAttr)
101 addHTMLLengthToStyle(style, CSSPropertyWidth, value);
102 else if (name == heightAttr)
103 addHTMLLengthToStyle(style, CSSPropertyHeight, value);
105 HTMLMediaElement::collectStyleForPresentationAttribute(name, value, style);
108 bool HTMLVideoElement::isPresentationAttribute(const QualifiedName& name) const
110 if (name == widthAttr || name == heightAttr)
112 return HTMLMediaElement::isPresentationAttribute(name);
115 void HTMLVideoElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
117 if (name == posterAttr) {
118 // Force a poster recalc by setting m_displayMode to Unknown directly before calling updateDisplayState.
119 HTMLMediaElement::setDisplayMode(Unknown);
120 updateDisplayState();
121 if (shouldDisplayPosterImage()) {
123 m_imageLoader = HTMLImageLoader::create(this);
124 m_imageLoader->updateFromElement(ImageLoader::UpdateIgnorePreviousError);
127 toRenderImage(renderer())->imageResource()->setImageResource(0);
129 // Notify the player when the poster image URL changes.
130 if (webMediaPlayer())
131 webMediaPlayer()->setPoster(posterImageURL());
133 HTMLMediaElement::parseAttribute(name, value);
136 bool HTMLVideoElement::supportsFullscreen() const
138 if (!document().page())
147 unsigned HTMLVideoElement::videoWidth() const
149 if (!webMediaPlayer())
151 return webMediaPlayer()->naturalSize().width;
154 unsigned HTMLVideoElement::videoHeight() const
156 if (!webMediaPlayer())
158 return webMediaPlayer()->naturalSize().height;
161 bool HTMLVideoElement::isURLAttribute(const Attribute& attribute) const
163 return attribute.name() == posterAttr || HTMLMediaElement::isURLAttribute(attribute);
166 const AtomicString HTMLVideoElement::imageSourceURL() const
168 const AtomicString& url = getAttribute(posterAttr);
169 if (!stripLeadingAndTrailingHTMLSpaces(url).isEmpty())
171 return m_defaultPosterURL;
174 void HTMLVideoElement::setDisplayMode(DisplayMode mode)
176 DisplayMode oldMode = displayMode();
177 KURL poster = posterImageURL();
179 if (!poster.isEmpty()) {
180 // We have a poster path, but only show it until the user triggers display by playing or seeking and the
181 // media engine has something to display.
182 // Don't show the poster if there is a seek operation or
183 // the video has restarted because of loop attribute
184 if (mode == Video && oldMode == Poster && !hasAvailableVideoFrame())
185 mode = PosterWaitingForVideo;
188 HTMLMediaElement::setDisplayMode(mode);
190 if (renderer() && displayMode() != oldMode)
191 renderer()->updateFromElement();
194 void HTMLVideoElement::updateDisplayState()
196 if (posterImageURL().isEmpty())
197 setDisplayMode(Video);
198 else if (displayMode() < Poster)
199 setDisplayMode(Poster);
202 void HTMLVideoElement::paintCurrentFrameInContext(GraphicsContext* context, const IntRect& destRect) const
204 if (!webMediaPlayer())
207 WebCanvas* canvas = context->canvas();
208 webMediaPlayer()->paint(canvas, destRect, context->getNormalizedAlpha());
211 bool HTMLVideoElement::copyVideoTextureToPlatformTexture(WebGraphicsContext3D* context, Platform3DObject texture, GLint level, GLenum internalFormat, GLenum type, bool premultiplyAlpha, bool flipY)
213 if (!webMediaPlayer())
216 if (!Extensions3DUtil::canUseCopyTextureCHROMIUM(internalFormat, type, level) || !context->makeContextCurrent())
219 return webMediaPlayer()->copyVideoTextureToPlatformTexture(context, texture, level, internalFormat, type, premultiplyAlpha, flipY);
222 bool HTMLVideoElement::hasAvailableVideoFrame() const
224 if (!webMediaPlayer())
227 return webMediaPlayer()->hasVideo() && webMediaPlayer()->readyState() >= blink::WebMediaPlayer::ReadyStateHaveCurrentData;
230 void HTMLVideoElement::webkitEnterFullscreen(ExceptionState& exceptionState)
235 if (!supportsFullscreen()) {
236 exceptionState.throwDOMException(InvalidStateError, "This element does not support fullscreen mode.");
243 void HTMLVideoElement::webkitExitFullscreen()
249 bool HTMLVideoElement::webkitSupportsFullscreen()
251 return supportsFullscreen();
254 bool HTMLVideoElement::webkitDisplayingFullscreen()
256 return isFullscreen();
259 void HTMLVideoElement::didMoveToNewDocument(Document& oldDocument)
262 m_imageLoader->elementDidMoveToNewDocument();
263 HTMLMediaElement::didMoveToNewDocument(oldDocument);
266 unsigned HTMLVideoElement::webkitDecodedFrameCount() const
268 if (!webMediaPlayer())
271 return webMediaPlayer()->decodedFrameCount();
274 unsigned HTMLVideoElement::webkitDroppedFrameCount() const
276 if (!webMediaPlayer())
279 return webMediaPlayer()->droppedFrameCount();
282 KURL HTMLVideoElement::posterImageURL() const
284 String url = stripLeadingAndTrailingHTMLSpaces(imageSourceURL());
287 return document().completeURL(url);
290 KURL HTMLVideoElement::mediaPlayerPosterURL()
292 return posterImageURL();
295 PassRefPtr<Image> HTMLVideoElement::getSourceImageForCanvas(SourceImageMode mode, SourceImageStatus* status) const
297 if (!hasAvailableVideoFrame()) {
298 *status = InvalidSourceImageStatus;
302 IntSize intrinsicSize(videoWidth(), videoHeight());
303 OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(intrinsicSize);
305 *status = InvalidSourceImageStatus;
309 paintCurrentFrameInContext(imageBuffer->context(), IntRect(IntPoint(0, 0), intrinsicSize));
311 *status = NormalSourceImageStatus;
312 return imageBuffer->copyImage(mode == CopySourceImageIfVolatile ? CopyBackingStore : DontCopyBackingStore, Unscaled);
315 bool HTMLVideoElement::wouldTaintOrigin(SecurityOrigin* destinationSecurityOrigin) const
317 return !hasSingleSecurityOrigin() || (!(webMediaPlayer() && webMediaPlayer()->didPassCORSAccessCheck()) && destinationSecurityOrigin->taintsCanvas(currentSrc()));
320 FloatSize HTMLVideoElement::sourceSize() const
322 return FloatSize(videoWidth(), videoHeight());