| /* |
| * Copyright (C) 2009 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. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE 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 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 Panner_h |
| #define Panner_h |
| |
| #include "platform/PlatformExport.h" |
| #include "wtf/PassOwnPtr.h" |
| |
| namespace WebCore { |
| |
| class AudioBus; |
| class HRTFDatabaseLoader; |
| |
| // Abstract base class for panning a mono or stereo source. |
| |
| class PLATFORM_EXPORT Panner { |
| public: |
| enum { |
| PanningModelEqualPower = 0, |
| PanningModelHRTF = 1, |
| PanningModelSoundField = 2 |
| }; |
| |
| typedef unsigned PanningModel; |
| |
| static PassOwnPtr<Panner> create(PanningModel, float sampleRate, HRTFDatabaseLoader*); |
| |
| virtual ~Panner() { }; |
| |
| PanningModel panningModel() const { return m_panningModel; } |
| |
| virtual void pan(double azimuth, double elevation, const AudioBus* inputBus, AudioBus* outputBus, size_t framesToProcess) = 0; |
| |
| virtual void reset() = 0; |
| |
| virtual double tailTime() const = 0; |
| virtual double latencyTime() const = 0; |
| |
| protected: |
| Panner(PanningModel model) : m_panningModel(model) { } |
| |
| PanningModel m_panningModel; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // Panner_h |