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1 /* | 1 /* |
2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, 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 |
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41 #include <stdio.h> | 41 #include <stdio.h> |
42 #endif | 42 #endif |
43 | 43 |
44 namespace WebCore { | 44 namespace WebCore { |
45 | 45 |
46 AudioNode::AudioNode(AudioContext* context, float sampleRate) | 46 AudioNode::AudioNode(AudioContext* context, float sampleRate) |
47 : m_isInitialized(false) | 47 : m_isInitialized(false) |
48 , m_nodeType(NodeTypeUnknown) | 48 , m_nodeType(NodeTypeUnknown) |
49 , m_context(context) | 49 , m_context(context) |
50 , m_sampleRate(sampleRate) | 50 , m_sampleRate(sampleRate) |
| 51 #if ENABLE(OILPAN) |
| 52 , m_keepAlive(adoptPtr(new Persistent<AudioNode>(this))) |
| 53 #endif |
51 , m_lastProcessingTime(-1) | 54 , m_lastProcessingTime(-1) |
52 , m_lastNonSilentTime(-1) | 55 , m_lastNonSilentTime(-1) |
53 , m_normalRefCount(1) // start out with normal refCount == 1 (like WTF::RefC
ounted class) | 56 , m_normalRefCount(1) // start out with normal refCount == 1 (like WTF::RefC
ounted class) |
54 , m_connectionRefCount(0) | 57 , m_connectionRefCount(0) |
55 , m_isMarkedForDeletion(false) | 58 , m_isMarkedForDeletion(false) |
56 , m_isDisabled(false) | 59 , m_isDisabled(false) |
57 , m_channelCount(2) | 60 , m_channelCount(2) |
58 , m_channelCountMode(Max) | 61 , m_channelCountMode(Max) |
59 , m_channelInterpretation(AudioBus::Speakers) | 62 , m_channelInterpretation(AudioBus::Speakers) |
60 { | 63 { |
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466 if (nodeType() != NodeTypeConvolver && nodeType() != NodeTypeDelay) { | 469 if (nodeType() != NodeTypeConvolver && nodeType() != NodeTypeDelay) { |
467 m_isDisabled = true; | 470 m_isDisabled = true; |
468 for (unsigned i = 0; i < m_outputs.size(); ++i) | 471 for (unsigned i = 0; i < m_outputs.size(); ++i) |
469 output(i)->disable(); | 472 output(i)->disable(); |
470 } | 473 } |
471 } | 474 } |
472 } | 475 } |
473 | 476 |
474 void AudioNode::ref(RefType refType) | 477 void AudioNode::ref(RefType refType) |
475 { | 478 { |
| 479 #if ENABLE(OILPAN) |
| 480 ASSERT(m_keepAlive); |
| 481 #endif |
476 switch (refType) { | 482 switch (refType) { |
477 case RefTypeNormal: | 483 case RefTypeNormal: |
478 atomicIncrement(&m_normalRefCount); | 484 atomicIncrement(&m_normalRefCount); |
479 break; | 485 break; |
480 case RefTypeConnection: | 486 case RefTypeConnection: |
481 atomicIncrement(&m_connectionRefCount); | 487 atomicIncrement(&m_connectionRefCount); |
482 break; | 488 break; |
483 default: | 489 default: |
484 ASSERT_NOT_REACHED(); | 490 ASSERT_NOT_REACHED(); |
485 } | 491 } |
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580 fprintf(stderr, "===========================\n"); | 586 fprintf(stderr, "===========================\n"); |
581 | 587 |
582 for (unsigned i = 0; i < NodeTypeEnd; ++i) | 588 for (unsigned i = 0; i < NodeTypeEnd; ++i) |
583 fprintf(stderr, "%d: %d\n", i, s_nodeCount[i]); | 589 fprintf(stderr, "%d: %d\n", i, s_nodeCount[i]); |
584 | 590 |
585 fprintf(stderr, "===========================\n\n\n"); | 591 fprintf(stderr, "===========================\n\n\n"); |
586 } | 592 } |
587 | 593 |
588 #endif // DEBUG_AUDIONODE_REFERENCES | 594 #endif // DEBUG_AUDIONODE_REFERENCES |
589 | 595 |
| 596 void AudioNode::trace(Visitor* visitor) |
| 597 { |
| 598 visitor->trace(m_context); |
| 599 } |
| 600 |
| 601 #if ENABLE(OILPAN) |
| 602 void AudioNode::clearKeepAlive() |
| 603 { |
| 604 // It is safe to drop the self-persistent when the ref count |
| 605 // of a AudioNode reaches zero. At that point, the |
| 606 // AudioNode node is removed from the AudioContext and |
| 607 // it cannot be reattached. Therefore, the reference count |
| 608 // will not go above zero again. |
| 609 ASSERT(m_keepAlive); |
| 610 m_keepAlive = nullptr; |
| 611 } |
| 612 #endif |
| 613 |
590 } // namespace WebCore | 614 } // namespace WebCore |
591 | 615 |
592 #endif // ENABLE(WEB_AUDIO) | 616 #endif // ENABLE(WEB_AUDIO) |
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