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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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25 #ifndef AudioResampler_h | 25 #ifndef AudioResampler_h |
26 #define AudioResampler_h | 26 #define AudioResampler_h |
27 | 27 |
28 #include "platform/audio/AudioBus.h" | 28 #include "platform/audio/AudioBus.h" |
29 #include "platform/audio/AudioResamplerKernel.h" | 29 #include "platform/audio/AudioResamplerKernel.h" |
30 #include "platform/audio/AudioSourceProvider.h" | 30 #include "platform/audio/AudioSourceProvider.h" |
31 #include "wtf/Noncopyable.h" | 31 #include "wtf/Noncopyable.h" |
32 #include "wtf/OwnPtr.h" | 32 #include "wtf/OwnPtr.h" |
33 #include "wtf/Vector.h" | 33 #include "wtf/Vector.h" |
34 | 34 |
35 namespace WebCore { | 35 namespace blink { |
36 | 36 |
37 // AudioResampler resamples the audio stream from an AudioSourceProvider. | 37 // AudioResampler resamples the audio stream from an AudioSourceProvider. |
38 // The audio stream may be single or multi-channel. | 38 // The audio stream may be single or multi-channel. |
39 // The default constructor defaults to single-channel (mono). | 39 // The default constructor defaults to single-channel (mono). |
40 | 40 |
41 class PLATFORM_EXPORT AudioResampler { | 41 class PLATFORM_EXPORT AudioResampler { |
42 WTF_MAKE_NONCOPYABLE(AudioResampler); | 42 WTF_MAKE_NONCOPYABLE(AudioResampler); |
43 public: | 43 public: |
44 AudioResampler(); | 44 AudioResampler(); |
45 AudioResampler(unsigned numberOfChannels); | 45 AudioResampler(unsigned numberOfChannels); |
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58 double rate() const { return m_rate; } | 58 double rate() const { return m_rate; } |
59 | 59 |
60 static const double MaxRate; | 60 static const double MaxRate; |
61 | 61 |
62 private: | 62 private: |
63 double m_rate; | 63 double m_rate; |
64 Vector<OwnPtr<AudioResamplerKernel> > m_kernels; | 64 Vector<OwnPtr<AudioResamplerKernel> > m_kernels; |
65 RefPtr<AudioBus> m_sourceBus; | 65 RefPtr<AudioBus> m_sourceBus; |
66 }; | 66 }; |
67 | 67 |
68 } // namespace WebCore | 68 } // namespace blink |
69 | 69 |
70 #endif // AudioResampler_h | 70 #endif // AudioResampler_h |
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