HRTF panner should handle the case of no loaded HRTF database

third_party/WebKit/Source/platform/audio/EqualPowerPanner.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 18 matching lines @@
 #include <algorithm>
 #include <cmath>
 
 namespace blink {
 
 EqualPowerPanner::EqualPowerPanner(float sampleRate)
     : Panner(PanningModelEqualPower)
 {
 }
 
-void EqualPowerPanner::pan(double azimuth, double /*elevation*/, const AudioBus* inputBus, AudioBus* outputBus, size_t framesToProcess)
+void EqualPowerPanner::pan(double azimuth, double /*elevation*/, const AudioBus* inputBus, AudioBus* outputBus, size_t framesToProcess, AudioBus::ChannelInterpretation)
 {
     bool isInputSafe = inputBus && (inputBus->numberOfChannels() == 1 || inputBus->numberOfChannels() == 2) && framesToProcess <= inputBus->length();
     ASSERT(isInputSafe);
     if (!isInputSafe)
         return;
 
     unsigned numberOfInputChannels = inputBus->numberOfChannels();
 
     bool isOutputSafe = outputBus && outputBus->numberOfChannels() == 2 && framesToProcess <= outputBus->length();
     ASSERT(isOutputSafe);
@@ skipping 96 matching lines @@
             // sourceR -> destR and "equal-power pan" sourceL as in mono case
             // by transforming the "azimuth" value from 0 -> +90 degrees into the range -90 -> +90.
             desiredPanPosition = azimuth / 90;
         }
     }
 
     desiredGainL = std::cos(piOverTwoDouble * desiredPanPosition);
     desiredGainR = std::sin(piOverTwoDouble * desiredPanPosition);
 }
 
-void EqualPowerPanner::panWithSampleAccurateValues(double* azimuth, double* /*elevation*/, const AudioBus* inputBus, AudioBus* outputBus, size_t framesToProcess)
+void EqualPowerPanner::panWithSampleAccurateValues(double* azimuth, double* /*elevation*/, const AudioBus* inputBus, AudioBus* outputBus, size_t framesToProcess, AudioBus::ChannelInterpretation)
 {
     bool isInputSafe = inputBus && (inputBus->numberOfChannels() == 1 || inputBus->numberOfChannels() == 2) && framesToProcess <= inputBus->length();
     DCHECK(isInputSafe);
     if (!isInputSafe)
         return;
 
     unsigned numberOfInputChannels = inputBus->numberOfChannels();
 
     bool isOutputSafe = outputBus && outputBus->numberOfChannels() == 2 && framesToProcess <= outputBus->length();
     DCHECK(isOutputSafe);
@@ skipping 36 matching lines @@
                 float inputR = *sourceR++;
                 *destinationL++ = static_cast<float>(inputL * desiredGainL);
                 *destinationR++ = static_cast<float>(inputR + inputL * desiredGainR);
             }
         }
     }
 }
 
 } // namespace blink