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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 |
| (...skipping 14 matching lines...) Expand all Loading... |
| 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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