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| 1 /* | 1 /* |
| 2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, 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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| 343 m_type = CUSTOM; | 343 m_type = CUSTOM; |
| 344 } | 344 } |
| 345 | 345 |
| 346 bool OscillatorHandler::propagatesSilence() const { | 346 bool OscillatorHandler::propagatesSilence() const { |
| 347 return !isPlayingOrScheduled() || hasFinished() || !m_periodicWave.get(); | 347 return !isPlayingOrScheduled() || hasFinished() || !m_periodicWave.get(); |
| 348 } | 348 } |
| 349 | 349 |
| 350 // ---------------------------------------------------------------- | 350 // ---------------------------------------------------------------- |
| 351 | 351 |
| 352 OscillatorNode::OscillatorNode(BaseAudioContext& context) | 352 OscillatorNode::OscillatorNode(BaseAudioContext& context) |
| 353 : AudioScheduledSourceNode(context) | 353 : AudioScheduledSourceNode(context), |
| 354 // Use musical pitch standard A440 as a default. | 354 // Use musical pitch standard A440 as a default. |
| 355 , | |
| 356 m_frequency(AudioParam::create(context, | 355 m_frequency(AudioParam::create(context, |
| 357 ParamTypeOscillatorFrequency, | 356 ParamTypeOscillatorFrequency, |
| 358 440, | 357 440, |
| 359 -context.sampleRate() / 2, | 358 -context.sampleRate() / 2, |
| 360 context.sampleRate() / 2)) | 359 context.sampleRate() / 2)), |
| 361 // Default to no detuning. | 360 // Default to no detuning. |
| 362 , | |
| 363 m_detune(AudioParam::create(context, ParamTypeOscillatorDetune, 0)) { | 361 m_detune(AudioParam::create(context, ParamTypeOscillatorDetune, 0)) { |
| 364 setHandler(OscillatorHandler::create(*this, context.sampleRate(), | 362 setHandler(OscillatorHandler::create(*this, context.sampleRate(), |
| 365 m_frequency->handler(), | 363 m_frequency->handler(), |
| 366 m_detune->handler())); | 364 m_detune->handler())); |
| 367 } | 365 } |
| 368 | 366 |
| 369 OscillatorNode* OscillatorNode::create(BaseAudioContext& context, | 367 OscillatorNode* OscillatorNode::create(BaseAudioContext& context, |
| 370 ExceptionState& exceptionState) { | 368 ExceptionState& exceptionState) { |
| 371 DCHECK(isMainThread()); | 369 DCHECK(isMainThread()); |
| 372 | 370 |
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| 446 | 444 |
| 447 AudioParam* OscillatorNode::detune() { | 445 AudioParam* OscillatorNode::detune() { |
| 448 return m_detune; | 446 return m_detune; |
| 449 } | 447 } |
| 450 | 448 |
| 451 void OscillatorNode::setPeriodicWave(PeriodicWave* wave) { | 449 void OscillatorNode::setPeriodicWave(PeriodicWave* wave) { |
| 452 oscillatorHandler().setPeriodicWave(wave); | 450 oscillatorHandler().setPeriodicWave(wave); |
| 453 } | 451 } |
| 454 | 452 |
| 455 } // namespace blink | 453 } // namespace blink |
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