| /* |
| * Copyright (C) 2011, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WaveShaperProcessor_h |
| #define WaveShaperProcessor_h |
| |
| #include "AudioDSPKernel.h" |
| #include "AudioDSPKernelProcessor.h" |
| #include "AudioNode.h" |
| #include <wtf/Float32Array.h> |
| #include <wtf/RefPtr.h> |
| #include <wtf/Threading.h> |
| |
| namespace WebCore { |
| |
| // WaveShaperProcessor is an AudioDSPKernelProcessor which uses WaveShaperDSPKernel objects to implement non-linear distortion effects. |
| |
| class WaveShaperProcessor : public AudioDSPKernelProcessor { |
| public: |
| WaveShaperProcessor(float sampleRate, size_t numberOfChannels); |
| |
| virtual ~WaveShaperProcessor(); |
| |
| virtual PassOwnPtr<AudioDSPKernel> createKernel(); |
| |
| virtual void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess); |
| |
| void setCurve(Float32Array*); |
| Float32Array* curve() { return m_curve.get(); } |
| |
| private: |
| // m_curve represents the non-linear shaping curve. |
| RefPtr<Float32Array> m_curve; |
| |
| // This synchronizes process() with setCurve(). |
| mutable Mutex m_processLock; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // WaveShaperProcessor_h |