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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 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 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. 27 */ 28 29#include "config.h" 30 31#if ENABLE(WEB_AUDIO) 32 33#include "modules/webaudio/AudioListener.h" 34 35#include "modules/webaudio/PannerNode.h" 36#include "platform/audio/AudioBus.h" 37#include "platform/audio/HRTFDatabaseLoader.h" 38#include "wtf/MainThread.h" 39 40namespace blink { 41 42AudioListener::AudioListener() 43 : m_position(0, 0, 0) 44 , m_orientation(0, 0, -1) 45 , m_upVector(0, 1, 0) 46 , m_velocity(0, 0, 0) 47 , m_dopplerFactor(1) 48 , m_speedOfSound(343.3) 49{ 50} 51 52AudioListener::~AudioListener() 53{ 54} 55 56void AudioListener::trace(Visitor* visitor) 57{ 58 visitor->trace(m_panners); 59 visitor->trace(m_hrtfDatabaseLoader); 60} 61 62void AudioListener::addPanner(PannerNode* panner) 63{ 64 ASSERT(isMainThread()); 65 if (!panner) 66 return; 67 68 m_panners.append(panner); 69} 70 71void AudioListener::removePanner(PannerNode* panner) 72{ 73 ASSERT(isMainThread()); 74 for (unsigned i = 0; i < m_panners.size(); ++i) { 75 if (panner == m_panners[i]) { 76 m_panners.remove(i); 77 break; 78 } 79 } 80} 81 82void AudioListener::createAndLoadHRTFDatabaseLoader(float sampleRate) 83{ 84 if (!m_hrtfDatabaseLoader) 85 m_hrtfDatabaseLoader = HRTFDatabaseLoader::createAndLoadAsynchronouslyIfNecessary(sampleRate); 86} 87 88bool AudioListener::isHRTFDatabaseLoaded() 89{ 90 return m_hrtfDatabaseLoader->isLoaded(); 91} 92 93void AudioListener::waitForHRTFDatabaseLoaderThreadCompletion() 94{ 95 if (m_hrtfDatabaseLoader) 96 m_hrtfDatabaseLoader->waitForLoaderThreadCompletion(); 97} 98 99void AudioListener::markPannersAsDirty(unsigned type) 100{ 101 for (unsigned i = 0; i < m_panners.size(); ++i) 102 m_panners[i]->markPannerAsDirty(type); 103} 104 105void AudioListener::setPosition(const FloatPoint3D &position) 106{ 107 if (m_position == position) 108 return; 109 110 // This synchronizes with panner's process(). 111 MutexLocker listenerLocker(m_listenerLock); 112 m_position = position; 113 markPannersAsDirty(PannerNode::AzimuthElevationDirty | PannerNode::DistanceConeGainDirty | PannerNode::DopplerRateDirty); 114} 115 116void AudioListener::setOrientation(const FloatPoint3D &orientation) 117{ 118 if (m_orientation == orientation) 119 return; 120 121 // This synchronizes with panner's process(). 122 MutexLocker listenerLocker(m_listenerLock); 123 m_orientation = orientation; 124 markPannersAsDirty(PannerNode::AzimuthElevationDirty); 125} 126 127void AudioListener::setUpVector(const FloatPoint3D &upVector) 128{ 129 if (m_upVector == upVector) 130 return; 131 132 // This synchronizes with panner's process(). 133 MutexLocker listenerLocker(m_listenerLock); 134 m_upVector = upVector; 135 markPannersAsDirty(PannerNode::AzimuthElevationDirty); 136} 137 138void AudioListener::setVelocity(const FloatPoint3D &velocity) 139{ 140 if (m_velocity == velocity) 141 return; 142 143 // This synchronizes with panner's process(). 144 MutexLocker listenerLocker(m_listenerLock); 145 m_velocity = velocity; 146 markPannersAsDirty(PannerNode::DopplerRateDirty); 147} 148 149void AudioListener::setDopplerFactor(double dopplerFactor) 150{ 151 if (m_dopplerFactor == dopplerFactor) 152 return; 153 154 // This synchronizes with panner's process(). 155 MutexLocker listenerLocker(m_listenerLock); 156 m_dopplerFactor = dopplerFactor; 157 markPannersAsDirty(PannerNode::DopplerRateDirty); 158} 159 160void AudioListener::setSpeedOfSound(double speedOfSound) 161{ 162 if (m_speedOfSound == speedOfSound) 163 return; 164 165 // This synchronizes with panner's process(). 166 MutexLocker listenerLocker(m_listenerLock); 167 m_speedOfSound = speedOfSound; 168 markPannersAsDirty(PannerNode::DopplerRateDirty); 169} 170 171} // namespace blink 172 173#endif // ENABLE(WEB_AUDIO) 174