Add a name attribute for each AudioParam

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

Index: third_party/WebKit/Source/modules/webaudio/AudioParam.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioParam.cpp b/third_party/WebKit/Source/modules/webaudio/AudioParam.cpp
index aa505aa81ac9e5770e7ea99a51041d463cbdd79e..129df7a70bc5fd05c3b3c623c160681c7a75c145 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioParam.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/AudioParam.cpp
@@ -40,6 +40,46 @@ AudioDestinationHandler& AudioParamHandler::destinationHandler() const
     return *m_destinationHandler;
 }
 
+String AudioParamHandler::getParamName() const
+{
+    // The returned string should be the name of the node and the name of the AudioParam for
+    // that node.
+    switch (m_paramType) {
+    case AudioBufferSourcePlaybackRate:
+        return "AudioBufferSource.playbackrate";
+    case AudioBufferSourceDetune:
+        return "AudioBufferSource.detune";
+    case BiquadFilterFrequency:
+        return "BiquadFilter.frequency";
+    case BiquadFilterQ:
+        return "BiquadFilter.Q";
+    case BiquadFilterGain:
+        return "BiquadFilter.gain";
+    case BiquadFilterDetune:
+        return "BiquadFilter.detune";
+    case DelayDelayTime:
+        return "Delay.delayTime";
+    case DynamicsCompressorThreshold:
+        return "DynamicsCompressor.threshold";
+    case DynamicsCompressorKnee:
+        return "DynamicsCompressor.knee";
+    case DynamicsCompressorRatio:
+        return "DynamicsCompressor.ratio";
+    case DynamicsCompressorAttack:
+        return "DynamicsCompressor.attack";
+    case DynamicsCompressorRelease:
+        return "DynamicsCompressor.release";
+    case GainGain:
+        return "Gain.gain";
+    case OscillatorFrequency:
+        return "Oscillator.frequency";
+    case OscillatorDetune:
+        return "Oscillator.detune";
+    case StereoPannerPan:
+        return "StereoPanner.pan";
+    };
+}
+
 float AudioParamHandler::value()
 {
     // Update value for timeline.
@@ -193,15 +233,15 @@ void AudioParamHandler::disconnect(AudioNodeOutput& output)
 
 // ----------------------------------------------------------------
 
-AudioParam::AudioParam(AbstractAudioContext& context, double defaultValue)
-    : m_handler(AudioParamHandler::create(context, defaultValue))
+AudioParam::AudioParam(AbstractAudioContext& context, AudioParamHandler::ParamType paramType, double defaultValue)
+    : m_handler(AudioParamHandler::create(context, paramType, defaultValue))
     , m_context(context)
 {
 }
 
-AudioParam* AudioParam::create(AbstractAudioContext& context, double defaultValue)
+AudioParam* AudioParam::create(AbstractAudioContext& context, AudioParamHandler::ParamType paramType, double defaultValue)
 {
-    return new AudioParam(context, defaultValue);
+    return new AudioParam(context, paramType, defaultValue);
 }
 
 DEFINE_TRACE(AudioParam)