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Updated the documentation AudioProcessorValueTreeState::Listener::parameterChanged() to clarify that retrieving the value of the parameter that has changed via the other AudioProcessorValueTreeState methods whilst within the callback is not guaranteed to return an up-to-date value

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ed 2019-02-20 09:25:48 +00:00
parent 6bf6aa1761
commit 548838e139
1 changed files with 11 additions and 3 deletions
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14
modules/juce_audio_processors/utilities/juce_AudioProcessorValueTreeState.h
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@ -279,8 +279,11 @@ public:
/** Returns a parameter by its ID string. */ /** Returns a parameter by its ID string. */
RangedAudioParameter* getParameter (StringRef parameterID) const noexcept; RangedAudioParameter* getParameter (StringRef parameterID) const noexcept;
/** Returns a pointer to a floating point representation of a particular /** Returns a pointer to a floating point representation of a particular parameter which a realtime
parameter which a realtime process can read to find out its current value. process can read to find out its current value.
Note that calling this method from within AudioProcessorValueTreeState::Listener::parameterChanged()
is not guaranteed to return an up-to-date value for the parameter.
*/ */
float* getRawParameterValue (StringRef parameterID) const noexcept; float* getRawParameterValue (StringRef parameterID) const noexcept;
@ -292,7 +295,12 @@ public:
{ {
virtual ~Listener() = default; virtual ~Listener() = default;
/** This callback method is called by the AudioProcessorValueTreeState when a parameter changes. */ /** This callback method is called by the AudioProcessorValueTreeState when a parameter changes.
Within this call, retrieving the value of the parameter that has changed via the getRawParameterValue()
or getParameter() methods is not guaranteed to return the up-to-date value. If you need this you should
instead use the newValue parameter.
*/
virtual void parameterChanged (const String& parameterID, float newValue) = 0; virtual void parameterChanged (const String& parameterID, float newValue) = 0;
}; };