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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 * Copyright (C) 2012 Intel Inc. All rights reserved. | 3 * Copyright (C) 2012 Intel Inc. All rights reserved. |
| 4 * | 4 * |
| 5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
| 6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
| 7 * are met: | 7 * are met: |
| 8 * | 8 * |
| 9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
| 10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
| 11 * 2. Redistributions in binary form must reproduce the above copyright | 11 * 2. Redistributions in binary form must reproduce the above copyright |
| 12 * notice, this list of conditions and the following disclaimer in the | 12 * notice, this list of conditions and the following disclaimer in the |
| 13 * documentation and/or other materials provided with the distribution. | 13 * documentation and/or other materials provided with the distribution. |
| 14 * | 14 * |
| 15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | 15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | 18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 */ | 25 */ |
| 26 | 26 |
| 27 // FFTFrame implementation using Intel IPP's DFT algorithm, | 27 // FFTFrame implementation using Intel IPP's DFT algorithm, |
| 28 // suitable for use on Linux. | 28 // suitable for use on Linux. |
| 29 | 29 |
| 30 #include "wtf/build_config.h" | 30 #include "platform/wtf/build_config.h" |
| 31 | 31 |
| 32 #if USE(WEBAUDIO_IPP) | 32 #if USE(WEBAUDIO_IPP) |
| 33 | 33 |
| 34 #include "platform/audio/FFTFrame.h" | 34 #include "platform/audio/FFTFrame.h" |
| 35 | 35 |
| 36 #include "wtf/MathExtras.h" | 36 #include "platform/wtf/MathExtras.h" |
| 37 | 37 |
| 38 namespace blink { | 38 namespace blink { |
| 39 | 39 |
| 40 const unsigned maximumFFTPower2Size = 24; | 40 const unsigned maximumFFTPower2Size = 24; |
| 41 | 41 |
| 42 // Normal constructor: allocates for a given fftSize. | 42 // Normal constructor: allocates for a given fftSize. |
| 43 FFTFrame::FFTFrame(unsigned fftSize) | 43 FFTFrame::FFTFrame(unsigned fftSize) |
| 44 : m_FFTSize(fftSize), | 44 : m_FFTSize(fftSize), |
| 45 m_log2FFTSize(static_cast<unsigned>(log2(fftSize))), | 45 m_log2FFTSize(static_cast<unsigned>(log2(fftSize))), |
| 46 m_realData(fftSize / 2), | 46 m_realData(fftSize / 2), |
| (...skipping 74 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 121 Ipp32f* imagP = m_imagData.data(); | 121 Ipp32f* imagP = m_imagData.data(); |
| 122 Ipp32fc* complexP = reinterpret_cast<Ipp32fc*>(m_complexData.data()); | 122 Ipp32fc* complexP = reinterpret_cast<Ipp32fc*>(m_complexData.data()); |
| 123 ippsRealToCplx_32f(realP, imagP, complexP, len); | 123 ippsRealToCplx_32f(realP, imagP, complexP, len); |
| 124 | 124 |
| 125 return const_cast<float*>(m_complexData.data()); | 125 return const_cast<float*>(m_complexData.data()); |
| 126 } | 126 } |
| 127 | 127 |
| 128 } // namespace blink | 128 } // namespace blink |
| 129 | 129 |
| 130 #endif // USE(WEBAUDIO_IPP) | 130 #endif // USE(WEBAUDIO_IPP) |
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