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Side by Side Diff: third_party/WebKit/Source/modules/webaudio/ConvolverNode.cpp

Issue 2501863003: Support for AudioContextOptions latencyHint. (Closed)
Patch Set: Add baseLatency and fix use of hardwareSampleRate. Created 4 years ago
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1 /* 1 /*
2 * Copyright (C) 2010, Google Inc. All rights reserved. 2 * Copyright (C) 2010, Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
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151 AudioBuffer* ConvolverHandler::buffer() { 151 AudioBuffer* ConvolverHandler::buffer() {
152 DCHECK(isMainThread()); 152 DCHECK(isMainThread());
153 return m_buffer.get(); 153 return m_buffer.get();
154 } 154 }
155 155
156 double ConvolverHandler::tailTime() const { 156 double ConvolverHandler::tailTime() const {
157 MutexTryLocker tryLocker(m_processLock); 157 MutexTryLocker tryLocker(m_processLock);
158 if (tryLocker.locked()) 158 if (tryLocker.locked())
159 return m_reverb 159 return m_reverb
160 ? m_reverb->impulseResponseLength() / 160 ? m_reverb->impulseResponseLength() /
161 static_cast<double>(sampleRate()) 161 static_cast<double>(context()->sampleRate())
162 : 0; 162 : 0;
163 // Since we don't want to block the Audio Device thread, we return a large 163 // Since we don't want to block the Audio Device thread, we return a large
164 // value instead of trying to acquire the lock. 164 // value instead of trying to acquire the lock.
165 return std::numeric_limits<double>::infinity(); 165 return std::numeric_limits<double>::infinity();
166 } 166 }
167 167
168 double ConvolverHandler::latencyTime() const { 168 double ConvolverHandler::latencyTime() const {
169 MutexTryLocker tryLocker(m_processLock); 169 MutexTryLocker tryLocker(m_processLock);
170 if (tryLocker.locked()) 170 if (tryLocker.locked())
171 return m_reverb 171 return m_reverb
172 ? m_reverb->latencyFrames() / static_cast<double>(sampleRate()) 172 ? m_reverb->latencyFrames() /
173 static_cast<double>(context()->sampleRate())
173 : 0; 174 : 0;
174 // Since we don't want to block the Audio Device thread, we return a large 175 // Since we don't want to block the Audio Device thread, we return a large
175 // value instead of trying to acquire the lock. 176 // value instead of trying to acquire the lock.
176 return std::numeric_limits<double>::infinity(); 177 return std::numeric_limits<double>::infinity();
177 } 178 }
178 179
179 // ---------------------------------------------------------------- 180 // ----------------------------------------------------------------
180 181
181 ConvolverNode::ConvolverNode(BaseAudioContext& context) : AudioNode(context) { 182 ConvolverNode::ConvolverNode(BaseAudioContext& context) : AudioNode(context) {
182 setHandler(ConvolverHandler::create(*this, context.sampleRate())); 183 setHandler(ConvolverHandler::create(*this, context.sampleRate()));
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227 228
228 bool ConvolverNode::normalize() const { 229 bool ConvolverNode::normalize() const {
229 return convolverHandler().normalize(); 230 return convolverHandler().normalize();
230 } 231 }
231 232
232 void ConvolverNode::setNormalize(bool normalize) { 233 void ConvolverNode::setNormalize(bool normalize) {
233 convolverHandler().setNormalize(normalize); 234 convolverHandler().setNormalize(normalize);
234 } 235 }
235 236
236 } // namespace blink 237 } // namespace blink
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