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1 /* | 1 /* |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #include "config.h" | 26 #include "config.h" |
27 #include "core/html/HTMLTrackElement.h" | 27 #include "core/html/HTMLTrackElement.h" |
28 | 28 |
29 #include "bindings/core/v8/ExceptionStatePlaceholder.h" | |
30 #include "core/HTMLNames.h" | 29 #include "core/HTMLNames.h" |
31 #include "core/dom/Document.h" | 30 #include "core/dom/Document.h" |
32 #include "core/events/Event.h" | 31 #include "core/events/Event.h" |
33 #include "core/frame/csp/ContentSecurityPolicy.h" | 32 #include "core/frame/csp/ContentSecurityPolicy.h" |
34 #include "core/html/HTMLMediaElement.h" | 33 #include "core/html/HTMLMediaElement.h" |
| 34 #include "core/html/track/LoadableTextTrack.h" |
35 #include "platform/Logging.h" | 35 #include "platform/Logging.h" |
36 | 36 |
37 namespace blink { | 37 namespace blink { |
38 | 38 |
39 using namespace HTMLNames; | 39 using namespace HTMLNames; |
40 | 40 |
41 #if !LOG_DISABLED | 41 #if !LOG_DISABLED |
42 static String urlForLoggingTrack(const KURL& url) | 42 static String urlForLoggingTrack(const KURL& url) |
43 { | 43 { |
44 static const unsigned maximumURLLengthForLogging = 128; | 44 static const unsigned maximumURLLengthForLogging = 128; |
(...skipping 104 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
149 return; | 149 return; |
150 | 150 |
151 // 2. If the text track's text track mode is not set to one of hidden or sho
wing, abort these steps. | 151 // 2. If the text track's text track mode is not set to one of hidden or sho
wing, abort these steps. |
152 if (ensureTrack()->mode() != TextTrack::hiddenKeyword() && ensureTrack()->mo
de() != TextTrack::showingKeyword()) | 152 if (ensureTrack()->mode() != TextTrack::hiddenKeyword() && ensureTrack()->mo
de() != TextTrack::showingKeyword()) |
153 return; | 153 return; |
154 | 154 |
155 // 3. If the text track's track element does not have a media element as a p
arent, abort these steps. | 155 // 3. If the text track's track element does not have a media element as a p
arent, abort these steps. |
156 if (!mediaElement()) | 156 if (!mediaElement()) |
157 return; | 157 return; |
158 | 158 |
159 // 4. Run the remainder of these steps asynchronously, allowing whatever cau
sed these steps to run to continue. | 159 // 4. Run the remainder of these steps in parallel, allowing whatever caused
these steps to run to continue. |
160 m_loadTimer.startOneShot(0, FROM_HERE); | 160 m_loadTimer.startOneShot(0, FROM_HERE); |
| 161 |
| 162 // 5. Top: Await a stable state. The synchronous section consists of the fol
lowing steps. (The steps in the |
| 163 // synchronous section are marked with [X]) |
| 164 // FIXME: We use a timer to approximate a "stable state" - i.e. this is not
100% per spec. |
161 } | 165 } |
162 | 166 |
163 void HTMLTrackElement::loadTimerFired(Timer<HTMLTrackElement>*) | 167 void HTMLTrackElement::loadTimerFired(Timer<HTMLTrackElement>*) |
164 { | 168 { |
165 if (!fastHasAttribute(srcAttr)) | |
166 return; | |
167 | |
168 WTF_LOG(Media, "HTMLTrackElement::loadTimerFired"); | 169 WTF_LOG(Media, "HTMLTrackElement::loadTimerFired"); |
169 | 170 |
170 // 6. Set the text track readiness state to loading. | 171 // 6. [X] Set the text track readiness state to loading. |
171 setReadyState(HTMLTrackElement::LOADING); | 172 setReadyState(LOADING); |
172 | 173 |
173 // 7. Let URL be the track URL of the track element. | 174 // 7. [X] Let URL be the track URL of the track element. |
174 KURL url = getNonEmptyURLAttribute(srcAttr); | 175 KURL url = getNonEmptyURLAttribute(srcAttr); |
175 | 176 |
176 // 8. If the track element's parent is a media element then let CORS mode be
the state of the parent media | 177 // 8. [X] If the track element's parent is a media element then let CORS mod
e be the state of the parent media |
177 // element's crossorigin content attribute. Otherwise, let CORS mode be No C
ORS. | 178 // element's crossorigin content attribute. Otherwise, let CORS mode be No C
ORS. |
| 179 const AtomicString& corsMode = mediaElementCrossOriginAttribute(); |
| 180 |
| 181 // 9. End the synchronous section, continuing the remaining steps in paralle
l. |
| 182 |
| 183 // 10. If URL is not the empty string, perform a potentially CORS-enabled fe
tch of URL, with the mode being CORS |
| 184 // mode, the origin being the origin of the track element's node document, a
nd the default origin behaviour set to |
| 185 // fail. |
178 if (!canLoadUrl(url)) { | 186 if (!canLoadUrl(url)) { |
179 didCompleteLoad(HTMLTrackElement::Failure); | 187 didCompleteLoad(Failure); |
180 return; | 188 return; |
181 } | 189 } |
182 | 190 |
183 ensureTrack()->scheduleLoad(url); | 191 if (url == m_url) { |
| 192 ASSERT(m_loader); |
| 193 switch (m_loader->loadState()) { |
| 194 case TextTrackLoader::Idle: |
| 195 case TextTrackLoader::Loading: |
| 196 // If loading of the resource from this URL is in progress, return e
arly. |
| 197 break; |
| 198 case TextTrackLoader::Finished: |
| 199 didCompleteLoad(Success); |
| 200 break; |
| 201 case TextTrackLoader::Failed: |
| 202 didCompleteLoad(Failure); |
| 203 break; |
| 204 default: |
| 205 ASSERT_NOT_REACHED(); |
| 206 } |
| 207 return; |
| 208 } |
| 209 |
| 210 m_url = url; |
| 211 |
| 212 if (m_loader) |
| 213 m_loader->cancelLoad(); |
| 214 |
| 215 m_loader = TextTrackLoader::create(*this, document()); |
| 216 if (!m_loader->load(m_url, corsMode)) |
| 217 didCompleteLoad(Failure); |
184 } | 218 } |
185 | 219 |
186 bool HTMLTrackElement::canLoadUrl(const KURL& url) | 220 bool HTMLTrackElement::canLoadUrl(const KURL& url) |
187 { | 221 { |
188 HTMLMediaElement* parent = mediaElement(); | 222 HTMLMediaElement* parent = mediaElement(); |
189 if (!parent) | 223 if (!parent) |
190 return false; | 224 return false; |
191 | 225 |
192 // 4.8.10.12.3 Sourcing out-of-band text tracks | |
193 | |
194 // 4. Download: If URL is not the empty string, perform a potentially CORS-e
nabled fetch of URL, with the | |
195 // mode being the state of the media element's crossorigin content attribute
, the origin being the | |
196 // origin of the media element's Document, and the default origin behaviour
set to fail. | |
197 if (url.isEmpty()) | 226 if (url.isEmpty()) |
198 return false; | 227 return false; |
199 | 228 |
200 if (!document().contentSecurityPolicy()->allowMediaFromSource(url)) { | 229 if (!document().contentSecurityPolicy()->allowMediaFromSource(url)) { |
201 WTF_LOG(Media, "HTMLTrackElement::canLoadUrl(%s) -> rejected by Content
Security Policy", urlForLoggingTrack(url).utf8().data()); | 230 WTF_LOG(Media, "HTMLTrackElement::canLoadUrl(%s) -> rejected by Content
Security Policy", urlForLoggingTrack(url).utf8().data()); |
202 return false; | 231 return false; |
203 } | 232 } |
204 | 233 |
205 return true; | 234 return true; |
206 } | 235 } |
207 | 236 |
208 void HTMLTrackElement::didCompleteLoad(LoadStatus status) | 237 void HTMLTrackElement::didCompleteLoad(LoadStatus status) |
209 { | 238 { |
210 // 4.8.10.12.3 Sourcing out-of-band text tracks (continued) | 239 // 10. ... (continued) |
211 | 240 |
212 // 4. Download: ... | 241 // If the fetching algorithm fails for any reason (network error, the server
returns an error code, a cross-origin |
213 // If the fetching algorithm fails for any reason (network error, the server
returns an error | 242 // check fails, etc), or if URL is the empty string, then queue a task to fi
rst change the text track readiness |
214 // code, a cross-origin check fails, etc), or if URL is the empty string or
has the wrong origin | 243 // state to failed to load and then fire a simple event named error at the t
rack element. This task must use the DOM |
215 // as determined by the condition at the start of this step, or if the fetch
ed resource is not in | 244 // manipulation task source. |
216 // a supported format, then queue a task to first change the text track read
iness state to failed | 245 // |
217 // to load and then fire a simple event named error at the track element; an
d then, once that task | 246 // (Note: We don't "queue a task" here because this method will only be call
ed from a timer - m_loadTimer or |
218 // is queued, move on to the step below labeled monitoring. | 247 // TextTrackLoader::m_cueLoadTimer - which should be a reasonable, and hopef
ully non-observable, approximation of |
219 | 248 // the spec text. I.e we could consider this to be run from the "networking
task source".) |
| 249 // |
| 250 // If the fetching algorithm does not fail, but the type of the resource is
not a supported text track format, or |
| 251 // the file was not successfully processed (e.g. the format in question is a
n XML format and the file contained a |
| 252 // well-formedness error that the XML specification requires be detected and
reported to the application), then the |
| 253 // task that is queued by the networking task source in which the aforementi
oned problem is found must change the |
| 254 // text track readiness state to failed to load and fire a simple event name
d error at the track element. |
220 if (status == Failure) { | 255 if (status == Failure) { |
221 setReadyState(HTMLTrackElement::TRACK_ERROR); | 256 setReadyState(TRACK_ERROR); |
222 dispatchEvent(Event::create(EventTypeNames::error), IGNORE_EXCEPTION); | 257 dispatchEvent(Event::create(EventTypeNames::error)); |
223 return; | 258 return; |
224 } | 259 } |
225 | 260 |
226 // If the fetching algorithm does not fail, then the final task that is queu
ed by the networking | 261 // If the fetching algorithm does not fail, and the file was successfully pr
ocessed, then the final task that is |
227 // task source must run the following steps: | 262 // queued by the networking task source, after it has finished parsing the d
ata, must change the text track |
228 // 1. Change the text track readiness state to loaded. | 263 // readiness state to loaded, and fire a simple event named load at the trac
k element. |
229 setReadyState(HTMLTrackElement::LOADED); | 264 setReadyState(LOADED); |
| 265 dispatchEvent(Event::create(EventTypeNames::load)); |
| 266 } |
230 | 267 |
231 // 2. If the file was successfully processed, fire a simple event named
load at the | 268 void HTMLTrackElement::newCuesAvailable(TextTrackLoader* loader) |
232 // track element. | 269 { |
233 dispatchEvent(Event::create(EventTypeNames::load), IGNORE_EXCEPTION); | 270 ASSERT_UNUSED(loader, m_loader == loader); |
| 271 ASSERT(m_track); |
| 272 |
| 273 WillBeHeapVector<RefPtrWillBeMember<TextTrackCue>> newCues; |
| 274 m_loader->getNewCues(newCues); |
| 275 |
| 276 m_track->addListOfCues(newCues); |
| 277 } |
| 278 |
| 279 void HTMLTrackElement::newRegionsAvailable(TextTrackLoader* loader) |
| 280 { |
| 281 ASSERT_UNUSED(loader, m_loader == loader); |
| 282 ASSERT(m_track); |
| 283 |
| 284 WillBeHeapVector<RefPtrWillBeMember<VTTRegion>> newRegions; |
| 285 m_loader->getNewRegions(newRegions); |
| 286 |
| 287 m_track->addRegions(newRegions); |
| 288 } |
| 289 |
| 290 void HTMLTrackElement::cueLoadingCompleted(TextTrackLoader* loader, bool loading
Failed) |
| 291 { |
| 292 ASSERT_UNUSED(loader, m_loader == loader); |
| 293 |
| 294 didCompleteLoad(loadingFailed ? Failure : Success); |
234 } | 295 } |
235 | 296 |
236 // NOTE: The values in the TextTrack::ReadinessState enum must stay in sync with
those in HTMLTrackElement::ReadyState. | 297 // NOTE: The values in the TextTrack::ReadinessState enum must stay in sync with
those in HTMLTrackElement::ReadyState. |
237 static_assert(HTMLTrackElement::NONE == static_cast<HTMLTrackElement::ReadyState
>(TextTrack::NotLoaded), "HTMLTrackElement::NONE should be in sync with TextTrac
k::NotLoaded"); | 298 static_assert(HTMLTrackElement::NONE == static_cast<HTMLTrackElement::ReadyState
>(TextTrack::NotLoaded), "HTMLTrackElement::NONE should be in sync with TextTrac
k::NotLoaded"); |
238 static_assert(HTMLTrackElement::LOADING == static_cast<HTMLTrackElement::ReadySt
ate>(TextTrack::Loading), "HTMLTrackElement::LOADING should be in sync with Text
Track::Loading"); | 299 static_assert(HTMLTrackElement::LOADING == static_cast<HTMLTrackElement::ReadySt
ate>(TextTrack::Loading), "HTMLTrackElement::LOADING should be in sync with Text
Track::Loading"); |
239 static_assert(HTMLTrackElement::LOADED == static_cast<HTMLTrackElement::ReadySta
te>(TextTrack::Loaded), "HTMLTrackElement::LOADED should be in sync with TextTra
ck::Loaded"); | 300 static_assert(HTMLTrackElement::LOADED == static_cast<HTMLTrackElement::ReadySta
te>(TextTrack::Loaded), "HTMLTrackElement::LOADED should be in sync with TextTra
ck::Loaded"); |
240 static_assert(HTMLTrackElement::TRACK_ERROR == static_cast<HTMLTrackElement::Rea
dyState>(TextTrack::FailedToLoad), "HTMLTrackElement::TRACK_ERROR should be in s
ync with TextTrack::FailedToLoad"); | 301 static_assert(HTMLTrackElement::TRACK_ERROR == static_cast<HTMLTrackElement::Rea
dyState>(TextTrack::FailedToLoad), "HTMLTrackElement::TRACK_ERROR should be in s
ync with TextTrack::FailedToLoad"); |
241 | 302 |
242 void HTMLTrackElement::setReadyState(ReadyState state) | 303 void HTMLTrackElement::setReadyState(ReadyState state) |
243 { | 304 { |
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263 { | 324 { |
264 Element* parent = parentElement(); | 325 Element* parent = parentElement(); |
265 if (isHTMLMediaElement(parent)) | 326 if (isHTMLMediaElement(parent)) |
266 return toHTMLMediaElement(parent); | 327 return toHTMLMediaElement(parent); |
267 return nullptr; | 328 return nullptr; |
268 } | 329 } |
269 | 330 |
270 DEFINE_TRACE(HTMLTrackElement) | 331 DEFINE_TRACE(HTMLTrackElement) |
271 { | 332 { |
272 visitor->trace(m_track); | 333 visitor->trace(m_track); |
| 334 visitor->trace(m_loader); |
273 HTMLElement::trace(visitor); | 335 HTMLElement::trace(visitor); |
274 } | 336 } |
275 | 337 |
276 } | 338 } |
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