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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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49 virtual void render(AudioBus* sourceBus, AudioBus* destinationBus, size_t nu
mberOfFrames) override final; | 49 virtual void render(AudioBus* sourceBus, AudioBus* destinationBus, size_t nu
mberOfFrames) override final; |
50 | 50 |
51 size_t currentSampleFrame() const { return acquireLoad(&m_currentSampleFrame
); } | 51 size_t currentSampleFrame() const { return acquireLoad(&m_currentSampleFrame
); } |
52 double currentTime() const { return currentSampleFrame() / static_cast<doubl
e>(sampleRate()); } | 52 double currentTime() const { return currentSampleFrame() / static_cast<doubl
e>(sampleRate()); } |
53 | 53 |
54 virtual unsigned long maxChannelCount() const { return 0; } | 54 virtual unsigned long maxChannelCount() const { return 0; } |
55 | 55 |
56 virtual void startRendering() = 0; | 56 virtual void startRendering() = 0; |
57 virtual void stopRendering() = 0; | 57 virtual void stopRendering() = 0; |
58 | 58 |
| 59 // TODO: Refactoring needed. This method is only used by OfflineAudioContext
. |
| 60 virtual size_t quantizeTimeToRenderQuantum(double) const { return 0; } |
| 61 |
| 62 virtual WebThread* offlineRenderThread(); |
| 63 |
59 protected: | 64 protected: |
60 // LocalAudioInputProvider allows us to expose an AudioSourceProvider for lo
cal/live audio input. | 65 // LocalAudioInputProvider allows us to expose an AudioSourceProvider for lo
cal/live audio input. |
61 // If there is local/live audio input, we call set() with the audio input da
ta every render quantum. | 66 // If there is local/live audio input, we call set() with the audio input da
ta every render quantum. |
62 class LocalAudioInputProvider final : public AudioSourceProvider { | 67 class LocalAudioInputProvider final : public AudioSourceProvider { |
63 public: | 68 public: |
64 LocalAudioInputProvider() | 69 LocalAudioInputProvider() |
65 : m_sourceBus(AudioBus::create(2, ProcessingSizeInFrames)) // FIXME:
handle non-stereo local input. | 70 : m_sourceBus(AudioBus::create(2, ProcessingSizeInFrames)) // FIXME:
handle non-stereo local input. |
66 { | 71 { |
67 } | 72 } |
68 | 73 |
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98 | 103 |
99 unsigned long maxChannelCount() const; | 104 unsigned long maxChannelCount() const; |
100 | 105 |
101 protected: | 106 protected: |
102 AudioDestinationNode(AudioContext&); | 107 AudioDestinationNode(AudioContext&); |
103 }; | 108 }; |
104 | 109 |
105 } // namespace blink | 110 } // namespace blink |
106 | 111 |
107 #endif // AudioDestinationNode_h | 112 #endif // AudioDestinationNode_h |
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