Use kRenderQuantumFrames in more places

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

 /*
  * Copyright (C) 2011, 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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  */
 
 #include "modules/webaudio/WaveShaperDSPKernel.h"
+
+#include "platform/audio/AudioUtilities.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/Threading.h"
 #include <algorithm>
 
-const unsigned RenderingQuantum = 128;
-
 namespace blink {
 
 WaveShaperDSPKernel::WaveShaperDSPKernel(WaveShaperProcessor* processor)
     : AudioDSPKernel(processor) {
   if (processor->oversample() != WaveShaperProcessor::OverSampleNone)
     lazyInitializeOversampling();
 }
 
 void WaveShaperDSPKernel::lazyInitializeOversampling() {
   if (!m_tempBuffer) {
-    m_tempBuffer = wrapUnique(new AudioFloatArray(RenderingQuantum * 2));
-    m_tempBuffer2 = wrapUnique(new AudioFloatArray(RenderingQuantum * 4));
-    m_upSampler = wrapUnique(new UpSampler(RenderingQuantum));
-    m_downSampler = wrapUnique(new DownSampler(RenderingQuantum * 2));
-    m_upSampler2 = wrapUnique(new UpSampler(RenderingQuantum * 2));
-    m_downSampler2 = wrapUnique(new DownSampler(RenderingQuantum * 4));
+    m_tempBuffer = wrapUnique(
+        new AudioFloatArray(AudioUtilities::kRenderQuantumFrames * 2));
+    m_tempBuffer2 = wrapUnique(
+        new AudioFloatArray(AudioUtilities::kRenderQuantumFrames * 4));
+    m_upSampler =
+        wrapUnique(new UpSampler(AudioUtilities::kRenderQuantumFrames));
+    m_downSampler =
+        wrapUnique(new DownSampler(AudioUtilities::kRenderQuantumFrames * 2));
+    m_upSampler2 =
+        wrapUnique(new UpSampler(AudioUtilities::kRenderQuantumFrames * 2));
+    m_downSampler2 =
+        wrapUnique(new DownSampler(AudioUtilities::kRenderQuantumFrames * 4));
   }
 }
 
 void WaveShaperDSPKernel::process(const float* source,
                                   float* destination,
                                   size_t framesToProcess) {
   switch (getWaveShaperProcessor()->oversample()) {
     case WaveShaperProcessor::OverSampleNone:
       processCurve(source, destination, framesToProcess);
       break;
@@ skipping 63 matching lines @@
       output =
           (1.0 - interpolationFactor) * value1 + interpolationFactor * value2;
     }
     destination[i] = output;
   }
 }
 
 void WaveShaperDSPKernel::processCurve2x(const float* source,
                                          float* destination,
                                          size_t framesToProcess) {
-  bool isSafe = framesToProcess == RenderingQuantum;
+  bool isSafe = framesToProcess == AudioUtilities::kRenderQuantumFrames;
   DCHECK(isSafe);
   if (!isSafe)
     return;
 
   float* tempP = m_tempBuffer->data();
 
   m_upSampler->process(source, tempP, framesToProcess);
 
   // Process at 2x up-sampled rate.
   processCurve(tempP, tempP, framesToProcess * 2);
 
   m_downSampler->process(tempP, destination, framesToProcess * 2);
 }
 
 void WaveShaperDSPKernel::processCurve4x(const float* source,
                                          float* destination,
                                          size_t framesToProcess) {
-  bool isSafe = framesToProcess == RenderingQuantum;
+  bool isSafe = framesToProcess == AudioUtilities::kRenderQuantumFrames;
   DCHECK(isSafe);
   if (!isSafe)
     return;
 
   float* tempP = m_tempBuffer->data();
   float* tempP2 = m_tempBuffer2->data();
 
   m_upSampler->process(source, tempP, framesToProcess);
   m_upSampler2->process(tempP, tempP2, framesToProcess * 2);
 
@@ skipping 37 matching lines @@
       break;
     }
     default:
       ASSERT_NOT_REACHED();
   }
 
   return static_cast<double>(latencyFrames) / sampleRate();
 }
 
 }  // namespace blink