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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 * Copyright (C) 2011, 2012, 2013 Apple Inc. All rights reserved. | 3 * Copyright (C) 2011, 2012, 2013 Apple Inc. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions are | 6 * modification, are permitted provided that the following conditions are |
7 * met: | 7 * met: |
8 * | 8 * |
9 * * Redistributions of source code must retain the above copyright | 9 * * Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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137 invalidateTrackIndex(); | 137 invalidateTrackIndex(); |
138 } | 138 } |
139 | 139 |
140 bool TextTrack::isVisualKind() const | 140 bool TextTrack::isVisualKind() const |
141 { | 141 { |
142 return kind() == subtitlesKeyword() || kind() == captionsKeyword(); | 142 return kind() == subtitlesKeyword() || kind() == captionsKeyword(); |
143 } | 143 } |
144 | 144 |
145 void TextTrack::setMode(const AtomicString& mode) | 145 void TextTrack::setMode(const AtomicString& mode) |
146 { | 146 { |
147 ASSERT(mode == disabledKeyword() || mode == hiddenKeyword() || mode == showi ngKeyword()); | 147 DCHECK(mode == disabledKeyword() || mode == hiddenKeyword() || mode == showi ngKeyword()); |
148 | 148 |
149 // On setting, if the new value isn't equal to what the attribute would curr ently | 149 // On setting, if the new value isn't equal to what the attribute would curr ently |
150 // return, the new value must be processed as follows ... | 150 // return, the new value must be processed as follows ... |
151 if (m_mode == mode) | 151 if (m_mode == mode) |
152 return; | 152 return; |
153 | 153 |
154 if (m_cues && cueTimeline()) { | 154 if (m_cues && cueTimeline()) { |
155 // If mode changes to disabled, remove this track's cues from the client | 155 // If mode changes to disabled, remove this track's cues from the client |
156 // because they will no longer be accessible from the cues() function. | 156 // because they will no longer be accessible from the cues() function. |
157 if (mode == disabledKeyword()) | 157 if (mode == disabledKeyword()) |
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223 | 223 |
224 if (!m_activeCues) | 224 if (!m_activeCues) |
225 m_activeCues = TextTrackCueList::create(); | 225 m_activeCues = TextTrackCueList::create(); |
226 | 226 |
227 m_cues->collectActiveCues(*m_activeCues); | 227 m_cues->collectActiveCues(*m_activeCues); |
228 return m_activeCues; | 228 return m_activeCues; |
229 } | 229 } |
230 | 230 |
231 void TextTrack::addCue(TextTrackCue* cue) | 231 void TextTrack::addCue(TextTrackCue* cue) |
232 { | 232 { |
233 ASSERT(cue); | 233 DCHECK(cue); |
234 | 234 |
235 // TODO(93143): Add spec-compliant behavior for negative time values. | 235 // TODO(93143): Add spec-compliant behavior for negative time values. |
236 if (std::isnan(cue->startTime()) || std::isnan(cue->endTime()) || cue->start Time() < 0 || cue->endTime() < 0) | 236 if (std::isnan(cue->startTime()) || std::isnan(cue->endTime()) || cue->start Time() < 0 || cue->endTime() < 0) |
237 return; | 237 return; |
238 | 238 |
239 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrac k-addcue | 239 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrac k-addcue |
240 | 240 |
241 // The addCue(cue) method of TextTrack objects, when invoked, must run the f ollowing steps: | 241 // The addCue(cue) method of TextTrack objects, when invoked, must run the f ollowing steps: |
242 | 242 |
243 // (Steps 1 and 2 - pertaining to association of rendering rules - are not i mplemented.) | 243 // (Steps 1 and 2 - pertaining to association of rendering rules - are not i mplemented.) |
244 | 244 |
245 // 3. If the given cue is in a text track list of cues, then remove cue | 245 // 3. If the given cue is in a text track list of cues, then remove cue |
246 // from that text track list of cues. | 246 // from that text track list of cues. |
247 if (TextTrack* cueTrack = cue->track()) | 247 if (TextTrack* cueTrack = cue->track()) |
248 cueTrack->removeCue(cue, ASSERT_NO_EXCEPTION); | 248 cueTrack->removeCue(cue, ASSERT_NO_EXCEPTION); |
249 | 249 |
250 // 4. Add cue to the method's TextTrack object's text track's text track lis t of cues. | 250 // 4. Add cue to the method's TextTrack object's text track's text track lis t of cues. |
251 cue->setTrack(this); | 251 cue->setTrack(this); |
252 ensureTextTrackCueList()->add(cue); | 252 ensureTextTrackCueList()->add(cue); |
253 | 253 |
254 if (cueTimeline() && m_mode != disabledKeyword()) | 254 if (cueTimeline() && m_mode != disabledKeyword()) |
255 cueTimeline()->addCue(this, cue); | 255 cueTimeline()->addCue(this, cue); |
256 } | 256 } |
257 | 257 |
258 void TextTrack::removeCue(TextTrackCue* cue, ExceptionState& exceptionState) | 258 void TextTrack::removeCue(TextTrackCue* cue, ExceptionState& exceptionState) |
259 { | 259 { |
260 ASSERT(cue); | 260 DCHECK(cue); |
261 | 261 |
262 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrac k-removecue | 262 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrac k-removecue |
263 | 263 |
264 // The removeCue(cue) method of TextTrack objects, when invoked, must run th e following steps: | 264 // The removeCue(cue) method of TextTrack objects, when invoked, must run th e following steps: |
265 | 265 |
266 // 1. If the given cue is not currently listed in the method's TextTrack | 266 // 1. If the given cue is not currently listed in the method's TextTrack |
267 // object's text track's text track list of cues, then throw a NotFoundError exception. | 267 // object's text track's text track list of cues, then throw a NotFoundError exception. |
268 if (cue->track() != this) { | 268 if (cue->track() != this) { |
269 exceptionState.throwDOMException(NotFoundError, "The specified cue is no t listed in the TextTrack's list of cues."); | 269 exceptionState.throwDOMException(NotFoundError, "The specified cue is no t listed in the TextTrack's list of cues."); |
270 return; | 270 return; |
271 } | 271 } |
272 | 272 |
273 // cue->track() == this implies that cue is in this track's list of cues, | 273 // cue->track() == this implies that cue is in this track's list of cues, |
274 // so this track should have a list of cues and the cue being removed | 274 // so this track should have a list of cues and the cue being removed |
275 // should be in it. | 275 // should be in it. |
276 ASSERT(m_cues); | 276 DCHECK(m_cues); |
277 | 277 |
278 // 2. Remove cue from the method's TextTrack object's text track's text trac k list of cues. | 278 // 2. Remove cue from the method's TextTrack object's text track's text trac k list of cues. |
279 bool wasRemoved = m_cues->remove(cue); | 279 bool wasRemoved = m_cues->remove(cue); |
280 ASSERT_UNUSED(wasRemoved, wasRemoved); | 280 DCHECK(wasRemoved); |
fs
2016/05/21 16:04:52
Let's try:
bool wasRemoved = ...;
DCHECK(wasRemov
Srirama
2016/05/23 05:44:34
Done.
| |
281 ALLOW_UNUSED_LOCAL(wasRemoved); | |
281 | 282 |
282 // If the cue is active, a timeline needs to be available. | 283 // If the cue is active, a timeline needs to be available. |
283 ASSERT(!cue->isActive() || cueTimeline()); | 284 DCHECK(!cue->isActive() || cueTimeline()); |
284 | 285 |
285 cue->setTrack(0); | 286 cue->setTrack(0); |
286 | 287 |
287 if (cueTimeline()) | 288 if (cueTimeline()) |
288 cueTimeline()->removeCue(this, cue); | 289 cueTimeline()->removeCue(this, cue); |
289 } | 290 } |
290 | 291 |
291 VTTRegionList* TextTrack::ensureVTTRegionList() | 292 VTTRegionList* TextTrack::ensureVTTRegionList() |
292 { | 293 { |
293 if (!m_regions) | 294 if (!m_regions) |
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363 // The cue may need to be repositioned in the media element's interval tree, may need to | 364 // The cue may need to be repositioned in the media element's interval tree, may need to |
364 // be re-rendered, etc, so remove it before the modification... | 365 // be re-rendered, etc, so remove it before the modification... |
365 if (cueTimeline()) | 366 if (cueTimeline()) |
366 cueTimeline()->removeCue(this, cue); | 367 cueTimeline()->removeCue(this, cue); |
367 } | 368 } |
368 | 369 |
369 void TextTrack::cueDidChange(TextTrackCue* cue) | 370 void TextTrack::cueDidChange(TextTrackCue* cue) |
370 { | 371 { |
371 // This method is called through cue->track(), which should imply that this | 372 // This method is called through cue->track(), which should imply that this |
372 // track has a list of cues. | 373 // track has a list of cues. |
373 ASSERT(m_cues && cue->track() == this); | 374 DCHECK(m_cues && cue->track() == this); |
374 | 375 |
375 // Make sure the TextTrackCueList order is up-to-date. | 376 // Make sure the TextTrackCueList order is up-to-date. |
376 // FIXME: Only need to do this if the change was to any of the timestamps. | 377 // FIXME: Only need to do this if the change was to any of the timestamps. |
377 m_cues->updateCueIndex(cue); | 378 m_cues->updateCueIndex(cue); |
378 | 379 |
379 // Since a call to cueDidChange is always preceded by a call to | 380 // Since a call to cueDidChange is always preceded by a call to |
380 // cueWillChange, the cue should no longer be active when we reach this | 381 // cueWillChange, the cue should no longer be active when we reach this |
381 // point (since it was removed from the timeline in cueWillChange). | 382 // point (since it was removed from the timeline in cueWillChange). |
382 ASSERT(!cue->isActive()); | 383 DCHECK(!cue->isActive()); |
383 | 384 |
384 if (m_mode == disabledKeyword()) | 385 if (m_mode == disabledKeyword()) |
385 return; | 386 return; |
386 | 387 |
387 // ... and add it back again if the track is enabled. | 388 // ... and add it back again if the track is enabled. |
388 if (cueTimeline()) | 389 if (cueTimeline()) |
389 cueTimeline()->addCue(this, cue); | 390 cueTimeline()->addCue(this, cue); |
390 } | 391 } |
391 | 392 |
392 int TextTrack::trackIndex() | 393 int TextTrack::trackIndex() |
393 { | 394 { |
394 ASSERT(m_trackList); | 395 DCHECK(m_trackList); |
395 | 396 |
396 if (m_trackIndex == invalidTrackIndex) | 397 if (m_trackIndex == invalidTrackIndex) |
397 m_trackIndex = m_trackList->getTrackIndex(this); | 398 m_trackIndex = m_trackList->getTrackIndex(this); |
398 | 399 |
399 return m_trackIndex; | 400 return m_trackIndex; |
400 } | 401 } |
401 | 402 |
402 void TextTrack::invalidateTrackIndex() | 403 void TextTrack::invalidateTrackIndex() |
403 { | 404 { |
404 m_trackIndex = invalidTrackIndex; | 405 m_trackIndex = invalidTrackIndex; |
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419 TextTrackCueList* TextTrack::ensureTextTrackCueList() | 420 TextTrackCueList* TextTrack::ensureTextTrackCueList() |
420 { | 421 { |
421 if (!m_cues) | 422 if (!m_cues) |
422 m_cues = TextTrackCueList::create(); | 423 m_cues = TextTrackCueList::create(); |
423 | 424 |
424 return m_cues.get(); | 425 return m_cues.get(); |
425 } | 426 } |
426 | 427 |
427 int TextTrack::trackIndexRelativeToRenderedTracks() | 428 int TextTrack::trackIndexRelativeToRenderedTracks() |
428 { | 429 { |
429 ASSERT(m_trackList); | 430 DCHECK(m_trackList); |
430 | 431 |
431 if (m_renderedTrackIndex == invalidTrackIndex) | 432 if (m_renderedTrackIndex == invalidTrackIndex) |
432 m_renderedTrackIndex = m_trackList->getTrackIndexRelativeToRenderedTrack s(this); | 433 m_renderedTrackIndex = m_trackList->getTrackIndexRelativeToRenderedTrack s(this); |
433 | 434 |
434 return m_renderedTrackIndex; | 435 return m_renderedTrackIndex; |
435 } | 436 } |
436 | 437 |
437 const AtomicString& TextTrack::interfaceName() const | 438 const AtomicString& TextTrack::interfaceName() const |
438 { | 439 { |
439 return EventTargetNames::TextTrack; | 440 return EventTargetNames::TextTrack; |
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468 visitor->trace(m_trackList); | 469 visitor->trace(m_trackList); |
469 TrackBase::trace(visitor); | 470 TrackBase::trace(visitor); |
470 EventTargetWithInlineData::trace(visitor); | 471 EventTargetWithInlineData::trace(visitor); |
471 } | 472 } |
472 | 473 |
473 DEFINE_TRACE_WRAPPERS(TextTrack) | 474 DEFINE_TRACE_WRAPPERS(TextTrack) |
474 { | 475 { |
475 visitor->traceWrappers(m_cues); | 476 visitor->traceWrappers(m_cues); |
476 } | 477 } |
477 } // namespace blink | 478 } // namespace blink |
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