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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 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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| 44 | 44 |
| 45 public: | 45 public: |
| 46 MultiChannelResampler(double scaleFactor, unsigned numberOfChannels); | 46 MultiChannelResampler(double scaleFactor, unsigned numberOfChannels); |
| 47 | 47 |
| 48 // Process given AudioSourceProvider for streaming applications. | 48 // Process given AudioSourceProvider for streaming applications. |
| 49 void process(AudioSourceProvider*, | 49 void process(AudioSourceProvider*, |
| 50 AudioBus* destination, | 50 AudioBus* destination, |
| 51 size_t framesToProcess); | 51 size_t framesToProcess); |
| 52 | 52 |
| 53 private: | 53 private: |
| 54 // FIXME: the mac port can have a more highly optimized implementation based o
n CoreAudio | 54 // FIXME: the mac port can have a more highly optimized implementation based |
| 55 // instead of SincResampler. For now the default implementation will be used o
n all ports. | 55 // on CoreAudio instead of SincResampler. For now the default implementation |
| 56 // will be used on all ports. |
| 56 // https://bugs.webkit.org/show_bug.cgi?id=75118 | 57 // https://bugs.webkit.org/show_bug.cgi?id=75118 |
| 57 | 58 |
| 58 // Each channel will be resampled using a high-quality SincResampler. | 59 // Each channel will be resampled using a high-quality SincResampler. |
| 59 Vector<std::unique_ptr<SincResampler>> m_kernels; | 60 Vector<std::unique_ptr<SincResampler>> m_kernels; |
| 60 | 61 |
| 61 unsigned m_numberOfChannels; | 62 unsigned m_numberOfChannels; |
| 62 }; | 63 }; |
| 63 | 64 |
| 64 } // namespace blink | 65 } // namespace blink |
| 65 | 66 |
| 66 #endif // MultiChannelResampler_h | 67 #endif // MultiChannelResampler_h |
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