1 /* 2 * Copyright (C) 2010, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #ifndef BiquadDSPKernel_h 26 #define BiquadDSPKernel_h 27 28 #include "AudioDSPKernel.h" 29 #include "Biquad.h" 30 #include "BiquadProcessor.h" 31 32 namespace WebCore { 33 34 class BiquadProcessor; 35 36 // BiquadDSPKernel is an AudioDSPKernel and is responsible for filtering one channel of a BiquadProcessor using a Biquad object. 37 38 class BiquadDSPKernel : public AudioDSPKernel { 39 public: 40 BiquadDSPKernel(BiquadProcessor* processor) 41 : AudioDSPKernel(processor) 42 { 43 } 44 45 // AudioDSPKernel 46 virtual void process(const float* source, float* dest, size_t framesToProcess); 47 virtual void reset() { m_biquad.reset(); } 48 49 protected: 50 Biquad m_biquad; 51 BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(processor()); } 52 }; 53 54 } // namespace WebCore 55 56 #endif // BiquadDSPKernel_h 57
