public interface AudioSpectrumListener
Audio spectrum callback interface. The observer receives periodic updates of
the audio spectrum. A single observer may be attached to a given
MediaPlayer
using MediaPlayer.setAudioSpectrumListener(javafx.scene.media.AudioSpectrumListener)
.- Since:
- JavaFX 2.0
- See Also:
MediaPlayer
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Method Summary
Modifier and Type Method Description void
spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases)
Notifies the observer about new data available for the audio spectrum.
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Method Details
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spectrumDataUpdate
void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases)Notifies the observer about new data available for the audio spectrum.The notification period for updates may be set using
MediaPlayer.setAudioSpectrumInterval(double)
, and the number of bands and sensitivity threshold viaMediaPlayer.setAudioSpectrumNumBands(int)
andMediaPlayer.setAudioSpectrumThreshold(int)
, respectively. The default values of the settings are an interval of0.1
seconds,128
bands, and sensitivity threshold-60.0
dB.The arrays passed to the listener should be considered to be read-only as the underlying implementation may re-use them.
- Parameters:
timestamp
- timestamp of the event in seconds.duration
- duration for which the spectrum was computed in seconds.magnitudes
- array containing the non-positive spectrum magnitude in decibels (dB) for each band. The size of the array equals the number of bands and should be considered to be read-only.phases
- array containing the phase in the range [Math.PI
,Math.PI
] for each band. The size of the array equals the number of bands and should be considered to be read-only.
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