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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 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 are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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354 sourceRanges->add(sourceRanges->start(sourceRanges->length() - 1, AS
SERT_NO_EXCEPTION), highestEndTime); | 354 sourceRanges->add(sourceRanges->start(sourceRanges->length() - 1, AS
SERT_NO_EXCEPTION), highestEndTime); |
355 | 355 |
356 // 5.3 Let new intersection ranges equal the the intersection between th
e intersection ranges and the source ranges. | 356 // 5.3 Let new intersection ranges equal the the intersection between th
e intersection ranges and the source ranges. |
357 // 5.4 Replace the ranges in intersection ranges with the new intersecti
on ranges. | 357 // 5.4 Replace the ranges in intersection ranges with the new intersecti
on ranges. |
358 intersectionRanges->intersectWith(sourceRanges); | 358 intersectionRanges->intersectWith(sourceRanges); |
359 } | 359 } |
360 | 360 |
361 return intersectionRanges.release(); | 361 return intersectionRanges.release(); |
362 } | 362 } |
363 | 363 |
| 364 PassRefPtrWillBeRawPtr<TimeRanges> MediaSource::seekable() const |
| 365 { |
| 366 // Implements MediaSource algorithm for HTMLMediaElement.seekable. |
| 367 // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-sou
rce.html#htmlmediaelement-extensions |
| 368 |
| 369 double sourceDuration = duration(); |
| 370 // 1. If duration equals NaN then return an empty TimeRanges object. |
| 371 if (std::isnan(sourceDuration)) |
| 372 return TimeRanges::create(); |
| 373 |
| 374 // 2. If duration equals positive Infinity, then return a single range with
a start time of 0 and an end time equal to the |
| 375 // highest end time reported by the HTMLMediaElement.buffered attribute. |
| 376 if (sourceDuration == std::numeric_limits<double>::infinity()) { |
| 377 RefPtrWillBeRawPtr<TimeRanges> buffered = m_attachedElement->buffered(); |
| 378 if (buffered->length() == 0) |
| 379 return TimeRanges::create(); |
| 380 return TimeRanges::create(0, buffered->end(buffered->length() - 1, ASSER
T_NO_EXCEPTION)); |
| 381 } |
| 382 |
| 383 // 3. Otherwise, return a single range with a start time of 0 and an end tim
e equal to duration. |
| 384 return TimeRanges::create(0, sourceDuration); |
| 385 } |
| 386 |
364 void MediaSource::setDuration(double duration, ExceptionState& exceptionState) | 387 void MediaSource::setDuration(double duration, ExceptionState& exceptionState) |
365 { | 388 { |
366 // 2.1 http://www.w3.org/TR/media-source/#widl-MediaSource-duration | 389 // 2.1 http://www.w3.org/TR/media-source/#widl-MediaSource-duration |
367 // 1. If the value being set is negative or NaN then throw an InvalidAccessE
rror | 390 // 1. If the value being set is negative or NaN then throw an InvalidAccessE
rror |
368 // exception and abort these steps. | 391 // exception and abort these steps. |
369 if (std::isnan(duration)) { | 392 if (std::isnan(duration)) { |
370 exceptionState.throwDOMException(InvalidAccessError, ExceptionMessages::
notAFiniteNumber(duration, "duration")); | 393 exceptionState.throwDOMException(InvalidAccessError, ExceptionMessages::
notAFiniteNumber(duration, "duration")); |
371 return; | 394 return; |
372 } | 395 } |
373 if (duration < 0.0) { | 396 if (duration < 0.0) { |
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585 | 608 |
586 m_asyncEventQueue->enqueueEvent(event.release()); | 609 m_asyncEventQueue->enqueueEvent(event.release()); |
587 } | 610 } |
588 | 611 |
589 URLRegistry& MediaSource::registry() const | 612 URLRegistry& MediaSource::registry() const |
590 { | 613 { |
591 return MediaSourceRegistry::registry(); | 614 return MediaSourceRegistry::registry(); |
592 } | 615 } |
593 | 616 |
594 } // namespace blink | 617 } // namespace blink |
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