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 #include "config.h"
27 #include "core/html/HTMLVideoElement.h"
28
29 #include "bindings/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
44 namespace WebCore {
45
46 using namespace HTMLNames;
47
HTMLVideoElement(Document & document)48 inline HTMLVideoElement::HTMLVideoElement(Document& document)
49 : HTMLMediaElement(videoTag, document)
50 {
51 ScriptWrappable::init(this);
52 if (document.settings())
53 m_defaultPosterURL = AtomicString(document.settings()->defaultVideoPosterURL());
54 }
55
create(Document & document)56 PassRefPtrWillBeRawPtr<HTMLVideoElement> HTMLVideoElement::create(Document& document)
57 {
58 RefPtrWillBeRawPtr<HTMLVideoElement> video = adoptRefWillBeNoop(new HTMLVideoElement(document));
59 video->ensureUserAgentShadowRoot();
60 video->suspendIfNeeded();
61 return video.release();
62 }
63
trace(Visitor * visitor)64 void HTMLVideoElement::trace(Visitor* visitor)
65 {
66 visitor->trace(m_imageLoader);
67 HTMLMediaElement::trace(visitor);
68 }
69
rendererIsNeeded(const RenderStyle & style)70 bool HTMLVideoElement::rendererIsNeeded(const RenderStyle& style)
71 {
72 return HTMLElement::rendererIsNeeded(style);
73 }
74
createRenderer(RenderStyle *)75 RenderObject* HTMLVideoElement::createRenderer(RenderStyle*)
76 {
77 return new RenderVideo(this);
78 }
79
attach(const AttachContext & context)80 void HTMLVideoElement::attach(const AttachContext& context)
81 {
82 HTMLMediaElement::attach(context);
83
84 updateDisplayState();
85 if (shouldDisplayPosterImage()) {
86 if (!m_imageLoader)
87 m_imageLoader = HTMLImageLoader::create(this);
88 m_imageLoader->updateFromElement();
89 if (renderer())
90 toRenderImage(renderer())->imageResource()->setImageResource(m_imageLoader->image());
91 }
92 }
93
collectStyleForPresentationAttribute(const QualifiedName & name,const AtomicString & value,MutableStylePropertySet * style)94 void HTMLVideoElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
95 {
96 if (name == widthAttr)
97 addHTMLLengthToStyle(style, CSSPropertyWidth, value);
98 else if (name == heightAttr)
99 addHTMLLengthToStyle(style, CSSPropertyHeight, value);
100 else
101 HTMLMediaElement::collectStyleForPresentationAttribute(name, value, style);
102 }
103
isPresentationAttribute(const QualifiedName & name) const104 bool HTMLVideoElement::isPresentationAttribute(const QualifiedName& name) const
105 {
106 if (name == widthAttr || name == heightAttr)
107 return true;
108 return HTMLMediaElement::isPresentationAttribute(name);
109 }
110
parseAttribute(const QualifiedName & name,const AtomicString & value)111 void HTMLVideoElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
112 {
113 if (name == posterAttr) {
114 // Force a poster recalc by setting m_displayMode to Unknown directly before calling updateDisplayState.
115 HTMLMediaElement::setDisplayMode(Unknown);
116 updateDisplayState();
117 if (shouldDisplayPosterImage()) {
118 if (!m_imageLoader)
119 m_imageLoader = HTMLImageLoader::create(this);
120 m_imageLoader->updateFromElementIgnoringPreviousError();
121 } else {
122 if (renderer())
123 toRenderImage(renderer())->imageResource()->setImageResource(0);
124 }
125 // Notify the player when the poster image URL changes.
126 if (player())
127 player()->setPoster(posterImageURL());
128 } else
129 HTMLMediaElement::parseAttribute(name, value);
130 }
131
supportsFullscreen() const132 bool HTMLVideoElement::supportsFullscreen() const
133 {
134 if (!document().page())
135 return false;
136
137 if (!player())
138 return false;
139
140 return true;
141 }
142
videoWidth() const143 unsigned HTMLVideoElement::videoWidth() const
144 {
145 if (!webMediaPlayer())
146 return 0;
147 return webMediaPlayer()->naturalSize().width;
148 }
149
videoHeight() const150 unsigned HTMLVideoElement::videoHeight() const
151 {
152 if (!webMediaPlayer())
153 return 0;
154 return webMediaPlayer()->naturalSize().height;
155 }
156
isURLAttribute(const Attribute & attribute) const157 bool HTMLVideoElement::isURLAttribute(const Attribute& attribute) const
158 {
159 return attribute.name() == posterAttr || HTMLMediaElement::isURLAttribute(attribute);
160 }
161
imageSourceURL() const162 const AtomicString HTMLVideoElement::imageSourceURL() const
163 {
164 const AtomicString& url = getAttribute(posterAttr);
165 if (!stripLeadingAndTrailingHTMLSpaces(url).isEmpty())
166 return url;
167 return m_defaultPosterURL;
168 }
169
setDisplayMode(DisplayMode mode)170 void HTMLVideoElement::setDisplayMode(DisplayMode mode)
171 {
172 DisplayMode oldMode = displayMode();
173 KURL poster = posterImageURL();
174
175 if (!poster.isEmpty()) {
176 // We have a poster path, but only show it until the user triggers display by playing or seeking and the
177 // media engine has something to display.
178 // Don't show the poster if there is a seek operation or
179 // the video has restarted because of loop attribute
180 if (mode == Video && oldMode == Poster && !hasAvailableVideoFrame())
181 mode = PosterWaitingForVideo;
182 }
183
184 HTMLMediaElement::setDisplayMode(mode);
185
186 if (renderer() && displayMode() != oldMode)
187 renderer()->updateFromElement();
188 }
189
updateDisplayState()190 void HTMLVideoElement::updateDisplayState()
191 {
192 if (posterImageURL().isEmpty())
193 setDisplayMode(Video);
194 else if (displayMode() < Poster)
195 setDisplayMode(Poster);
196 }
197
paintCurrentFrameInContext(GraphicsContext * context,const IntRect & destRect) const198 void HTMLVideoElement::paintCurrentFrameInContext(GraphicsContext* context, const IntRect& destRect) const
199 {
200 MediaPlayer* player = HTMLMediaElement::player();
201 if (!player)
202 return;
203 player->paint(context, destRect);
204 }
205
copyVideoTextureToPlatformTexture(blink::WebGraphicsContext3D * context,Platform3DObject texture,GLint level,GLenum type,GLenum internalFormat,bool premultiplyAlpha,bool flipY)206 bool HTMLVideoElement::copyVideoTextureToPlatformTexture(blink::WebGraphicsContext3D* context, Platform3DObject texture, GLint level, GLenum type, GLenum internalFormat, bool premultiplyAlpha, bool flipY)
207 {
208 if (!player())
209 return false;
210 return player()->copyVideoTextureToPlatformTexture(context, texture, level, type, internalFormat, premultiplyAlpha, flipY);
211 }
212
hasAvailableVideoFrame() const213 bool HTMLVideoElement::hasAvailableVideoFrame() const
214 {
215 if (!webMediaPlayer())
216 return false;
217
218 return webMediaPlayer()->hasVideo() && webMediaPlayer()->readyState() >= blink::WebMediaPlayer::ReadyStateHaveCurrentData;
219 }
220
webkitEnterFullscreen(ExceptionState & exceptionState)221 void HTMLVideoElement::webkitEnterFullscreen(ExceptionState& exceptionState)
222 {
223 if (isFullscreen())
224 return;
225
226 if (!supportsFullscreen()) {
227 exceptionState.throwDOMException(InvalidStateError, "This element does not support fullscreen mode.");
228 return;
229 }
230
231 enterFullscreen();
232 }
233
webkitExitFullscreen()234 void HTMLVideoElement::webkitExitFullscreen()
235 {
236 if (isFullscreen())
237 exitFullscreen();
238 }
239
webkitSupportsFullscreen()240 bool HTMLVideoElement::webkitSupportsFullscreen()
241 {
242 return supportsFullscreen();
243 }
244
webkitDisplayingFullscreen()245 bool HTMLVideoElement::webkitDisplayingFullscreen()
246 {
247 return isFullscreen();
248 }
249
didMoveToNewDocument(Document & oldDocument)250 void HTMLVideoElement::didMoveToNewDocument(Document& oldDocument)
251 {
252 if (m_imageLoader)
253 m_imageLoader->elementDidMoveToNewDocument();
254 HTMLMediaElement::didMoveToNewDocument(oldDocument);
255 }
256
webkitDecodedFrameCount() const257 unsigned HTMLVideoElement::webkitDecodedFrameCount() const
258 {
259 if (!webMediaPlayer())
260 return 0;
261
262 return webMediaPlayer()->decodedFrameCount();
263 }
264
webkitDroppedFrameCount() const265 unsigned HTMLVideoElement::webkitDroppedFrameCount() const
266 {
267 if (!webMediaPlayer())
268 return 0;
269
270 return webMediaPlayer()->droppedFrameCount();
271 }
272
posterImageURL() const273 KURL HTMLVideoElement::posterImageURL() const
274 {
275 String url = stripLeadingAndTrailingHTMLSpaces(imageSourceURL());
276 if (url.isEmpty())
277 return KURL();
278 return document().completeURL(url);
279 }
280
mediaPlayerPosterURL()281 KURL HTMLVideoElement::mediaPlayerPosterURL()
282 {
283 return posterImageURL();
284 }
285
getSourceImageForCanvas(SourceImageMode mode,SourceImageStatus * status) const286 PassRefPtr<Image> HTMLVideoElement::getSourceImageForCanvas(SourceImageMode mode, SourceImageStatus* status) const
287 {
288 if (!hasAvailableVideoFrame()) {
289 *status = InvalidSourceImageStatus;
290 return nullptr;
291 }
292
293 IntSize intrinsicSize(videoWidth(), videoHeight());
294 OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(intrinsicSize);
295 if (!imageBuffer) {
296 *status = InvalidSourceImageStatus;
297 return nullptr;
298 }
299
300 paintCurrentFrameInContext(imageBuffer->context(), IntRect(IntPoint(0, 0), intrinsicSize));
301
302 *status = NormalSourceImageStatus;
303 return imageBuffer->copyImage(mode == CopySourceImageIfVolatile ? CopyBackingStore : DontCopyBackingStore, Unscaled);
304 }
305
wouldTaintOrigin(SecurityOrigin * destinationSecurityOrigin) const306 bool HTMLVideoElement::wouldTaintOrigin(SecurityOrigin* destinationSecurityOrigin) const
307 {
308 return !hasSingleSecurityOrigin() || (!(webMediaPlayer() && webMediaPlayer()->didPassCORSAccessCheck()) && destinationSecurityOrigin->taintsCanvas(currentSrc()));
309 }
310
sourceSize() const311 FloatSize HTMLVideoElement::sourceSize() const
312 {
313 return FloatSize(videoWidth(), videoHeight());
314 }
315
316 }
317