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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 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. 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 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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55 size_t length() const { return m_length; } | 55 size_t length() const { return m_length; } |
56 double duration() const { return length() / static_cast<double>(sampleRate()
); } | 56 double duration() const { return length() / static_cast<double>(sampleRate()
); } |
57 float sampleRate() const { return m_sampleRate; } | 57 float sampleRate() const { return m_sampleRate; } |
58 | 58 |
59 // Channel data access | 59 // Channel data access |
60 unsigned numberOfChannels() const { return m_channels.size(); } | 60 unsigned numberOfChannels() const { return m_channels.size(); } |
61 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat
e&); | 61 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat
e&); |
62 Float32Array* getChannelData(unsigned channelIndex); | 62 Float32Array* getChannelData(unsigned channelIndex); |
63 void zero(); | 63 void zero(); |
64 | 64 |
65 static float minAllowedSampleRate(); | |
66 static float maxAllowedSampleRate(); | |
67 | |
68 void trace(Visitor*) { } | 65 void trace(Visitor*) { } |
69 | 66 |
70 protected: | 67 protected: |
71 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRa
te); | 68 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRa
te); |
72 explicit AudioBuffer(AudioBus*); | 69 explicit AudioBuffer(AudioBus*); |
73 bool createdSuccessfully(unsigned desiredNumberOfChannels) const; | 70 bool createdSuccessfully(unsigned desiredNumberOfChannels) const; |
74 | 71 |
75 float m_sampleRate; | 72 float m_sampleRate; |
76 size_t m_length; | 73 size_t m_length; |
77 | 74 |
78 Vector<RefPtr<Float32Array> > m_channels; | 75 Vector<RefPtr<Float32Array> > m_channels; |
79 }; | 76 }; |
80 | 77 |
81 } // namespace blink | 78 } // namespace blink |
82 | 79 |
83 #endif // AudioBuffer_h | 80 #endif // AudioBuffer_h |
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