Allow disabling of resampling in decodeAudioData

third_party/WebKit/Source/modules/webaudio/BaseAudioContext.cpp

 /*
  * Copyright (C) 2010, 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
@@ skipping 30 matching lines @@
 #include "modules/webaudio/AudioBufferCallback.h"
 #include "modules/webaudio/AudioBufferSourceNode.h"
 #include "modules/webaudio/AudioContext.h"
 #include "modules/webaudio/AudioListener.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/BiquadFilterNode.h"
 #include "modules/webaudio/ChannelMergerNode.h"
 #include "modules/webaudio/ChannelSplitterNode.h"
 #include "modules/webaudio/ConvolverNode.h"
+#include "modules/webaudio/DecodeAudioDataOptions.h"
 #include "modules/webaudio/DefaultAudioDestinationNode.h"
 #include "modules/webaudio/DelayNode.h"
 #include "modules/webaudio/DynamicsCompressorNode.h"
 #include "modules/webaudio/GainNode.h"
 #include "modules/webaudio/IIRFilterNode.h"
 #include "modules/webaudio/MediaElementAudioSourceNode.h"
 #include "modules/webaudio/MediaStreamAudioDestinationNode.h"
 #include "modules/webaudio/MediaStreamAudioSourceNode.h"
 #include "modules/webaudio/OfflineAudioCompletionEvent.h"
 #include "modules/webaudio/OfflineAudioContext.h"
@@ skipping 210 matching lines @@
             DEFINE_STATIC_LOCAL(CustomCountHistogram, audioBufferSampleRateRatioHistogram,
                 ("WebAudio.AudioBuffer.SampleRateRatio", 1, 6400, 50));
             float ratio = 100 * sampleRate / this->sampleRate();
             audioBufferSampleRateRatioHistogram.count(static_cast<int>(0.5 + ratio));
         }
     }
 
     return buffer;
 }
 
-ScriptPromise BaseAudioContext::decodeAudioData(ScriptState* scriptState, DOMArrayBuffer* audioData, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback, ExceptionState& exceptionState)
+ScriptPromise BaseAudioContext::decodeAudioData(
+    ScriptState* scriptState,
+    DOMArrayBuffer* audioData,
+    bool disableResampling,
+    AudioBufferCallback* successCallback,
+    AudioBufferCallback* errorCallback,
+    ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
     DCHECK(audioData);
 
     ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     float rate = isContextClosed() ? closedContextSampleRate() : sampleRate();
 
     DCHECK_GT(rate, 0);
 
     m_decodeAudioResolvers.add(resolver);
-    m_audioDecoder.decodeAsync(audioData, rate, successCallback, errorCallback, resolver, this);
+
+    m_audioDecoder.decodeAsync(
+        audioData,
+        rate,
+        disableResampling,
+        successCallback,
+        errorCallback,
+        resolver,
+        this);
 
     return promise;
 }
 
+ScriptPromise BaseAudioContext::decodeAudioData(ScriptState* scriptState, DOMArrayBuffer* audioData, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback, ExceptionState& exceptionState)
+{
+    return decodeAudioData(
+        scriptState,
+        audioData,
+        false,
+        successCallback,
+        errorCallback,
+        exceptionState);
+}
+
+ScriptPromise BaseAudioContext::decodeAudioData(ScriptState* scriptState, DOMArrayBuffer* audioData, const DecodeAudioDataOptions& decodeOptions, ExceptionState& exceptionState)
+{
+    return decodeAudioData(
+        scriptState,
+        audioData,
+        decodeOptions.disableResampling(),
+        nullptr,
+        nullptr,
+        exceptionState);
+}
+
 void BaseAudioContext::handleDecodeAudioData(AudioBuffer* audioBuffer, ScriptPromiseResolver* resolver, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback)
 {
     DCHECK(isMainThread());
 
     if (audioBuffer) {
         // Resolve promise successfully and run the success callback
         resolver->resolve(audioBuffer);
         if (successCallback)
             successCallback->handleEvent(audioBuffer);
     } else {
@@ skipping 522 matching lines @@
 
 SecurityOrigin* BaseAudioContext::getSecurityOrigin() const
 {
     if (getExecutionContext())
         return getExecutionContext()->getSecurityOrigin();
 
     return nullptr;
 }
 
 } // namespace blink