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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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| 34 #include "wtf/PassRefPtr.h" | 34 #include "wtf/PassRefPtr.h" |
| 35 #include "wtf/RefPtr.h" | 35 #include "wtf/RefPtr.h" |
| 36 #include "wtf/Vector.h" | 36 #include "wtf/Vector.h" |
| 37 | 37 |
| 38 namespace blink { | 38 namespace blink { |
| 39 | 39 |
| 40 class BaseAudioContext; | 40 class BaseAudioContext; |
| 41 class AudioBuffer; | 41 class AudioBuffer; |
| 42 class WaitableEvent; | 42 class WaitableEvent; |
| 43 | 43 |
| 44 // ScriptProcessorNode is an AudioNode which allows for arbitrary synthesis or p
rocessing directly using JavaScript. | 44 // ScriptProcessorNode is an AudioNode which allows for arbitrary synthesis or |
| 45 // The API allows for a variable number of inputs and outputs, although it must
have at least one input or output. | 45 // processing directly using JavaScript. The API allows for a variable number |
| 46 // This basic implementation supports no more than one input and output. | 46 // of inputs and outputs, although it must have at least one input or output. |
| 47 // The "onaudioprocess" attribute is an event listener which will get called per
iodically with an AudioProcessingEvent which has | 47 // This basic implementation supports no more than one input and output. The |
| 48 // AudioBuffers for each input and output. | 48 // "onaudioprocess" attribute is an event listener which will get called |
| 49 // periodically with an AudioProcessingEvent which has AudioBuffers for each |
| 50 // input and output. |
| 49 | 51 |
| 50 class ScriptProcessorHandler final : public AudioHandler { | 52 class ScriptProcessorHandler final : public AudioHandler { |
| 51 public: | 53 public: |
| 52 static PassRefPtr<ScriptProcessorHandler> create( | 54 static PassRefPtr<ScriptProcessorHandler> create( |
| 53 AudioNode&, | 55 AudioNode&, |
| 54 float sampleRate, | 56 float sampleRate, |
| 55 size_t bufferSize, | 57 size_t bufferSize, |
| 56 unsigned numberOfInputChannels, | 58 unsigned numberOfInputChannels, |
| 57 unsigned numberOfOutputChannels); | 59 unsigned numberOfOutputChannels); |
| 58 ~ScriptProcessorHandler() override; | 60 ~ScriptProcessorHandler() override; |
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| 145 ScriptProcessorNode(BaseAudioContext&, | 147 ScriptProcessorNode(BaseAudioContext&, |
| 146 float sampleRate, | 148 float sampleRate, |
| 147 size_t bufferSize, | 149 size_t bufferSize, |
| 148 unsigned numberOfInputChannels, | 150 unsigned numberOfInputChannels, |
| 149 unsigned numberOfOutputChannels); | 151 unsigned numberOfOutputChannels); |
| 150 }; | 152 }; |
| 151 | 153 |
| 152 } // namespace blink | 154 } // namespace blink |
| 153 | 155 |
| 154 #endif // ScriptProcessorNode_h | 156 #endif // ScriptProcessorNode_h |
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