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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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| 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 */ | 27 */ |
| 28 | 28 |
| 29 #include "config.h" | 29 #include "config.h" |
| 30 | 30 |
| 31 #if ENABLE(WEB_AUDIO) | 31 #if ENABLE(WEB_AUDIO) |
| 32 | 32 |
| 33 #include "FFTConvolver.h" | 33 #include "core/platform/audio/FFTConvolver.h" |
| 34 | 34 |
| 35 #include "VectorMath.h" | 35 #include "core/platform/audio/VectorMath.h" |
| 36 | 36 |
| 37 namespace WebCore { | 37 namespace WebCore { |
| 38 | 38 |
| 39 using namespace VectorMath; | 39 using namespace VectorMath; |
| 40 | 40 |
| 41 FFTConvolver::FFTConvolver(size_t fftSize) | 41 FFTConvolver::FFTConvolver(size_t fftSize) |
| 42 : m_frame(fftSize) | 42 : m_frame(fftSize) |
| 43 , m_readWriteIndex(0) | 43 , m_readWriteIndex(0) |
| 44 , m_inputBuffer(fftSize) // 2nd half of buffer is always zeroed | 44 , m_inputBuffer(fftSize) // 2nd half of buffer is always zeroed |
| 45 , m_outputBuffer(fftSize) | 45 , m_outputBuffer(fftSize) |
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| 111 | 111 |
| 112 void FFTConvolver::reset() | 112 void FFTConvolver::reset() |
| 113 { | 113 { |
| 114 m_lastOverlapBuffer.zero(); | 114 m_lastOverlapBuffer.zero(); |
| 115 m_readWriteIndex = 0; | 115 m_readWriteIndex = 0; |
| 116 } | 116 } |
| 117 | 117 |
| 118 } // namespace WebCore | 118 } // namespace WebCore |
| 119 | 119 |
| 120 #endif // ENABLE(WEB_AUDIO) | 120 #endif // ENABLE(WEB_AUDIO) |
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