AudioParams with automations must process timelines

third_party/WebKit/Source/modules/webaudio/GainNode.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 10 matching lines @@
  * 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/GainNode.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/GainOptions.h"
 #include "platform/audio/AudioBus.h"
+#include "platform/audio/AudioUtilities.h"
 
 namespace blink {
 
 GainHandler::GainHandler(AudioNode& node,
                          float sampleRate,
                          AudioParamHandler& gain)
     : AudioHandler(NodeTypeGain, node, sampleRate),
       m_lastGain(1.0),
       m_gain(gain),
       m_sampleAccurateGainValues(
@@ skipping 47 matching lines @@
         // If the gain is 0 (and we've converged on dezippering), just zero the
         // bus and set the silence hint.
         outputBus->zero();
       } else {
         outputBus->copyWithGainFrom(*inputBus, &m_lastGain, m_gain->value());
       }
     }
   }
 }
 
+void GainHandler::processOnlyAudioParams(size_t framesToProcess) {
+  DCHECK(context()->isAudioThread());
+  DCHECK_LE(framesToProcess, AudioUtilities::kRenderQuantumFrames);
+
+  float values[AudioUtilities::kRenderQuantumFrames];
+
+  m_gain->calculateSampleAccurateValues(values, framesToProcess);
+}
+
 // FIXME: this can go away when we do mixing with gain directly in summing
 // junction of AudioNodeInput
 //
 // As soon as we know the channel count of our input, we can lazily initialize.
 // Sometimes this may be called more than once with different channel counts, in
 // which case we must safely uninitialize and then re-initialize with the new
 // channel count.
 void GainHandler::checkNumberOfChannelsForInput(AudioNodeInput* input) {
   DCHECK(context()->isAudioThread());
   ASSERT(context()->isGraphOwner());
@@ skipping 60 matching lines @@
 AudioParam* GainNode::gain() const {
   return m_gain;
 }
 
 DEFINE_TRACE(GainNode) {
   visitor->trace(m_gain);
   AudioNode::trace(visitor);
 }
 
 }  // namespace blink