org.jitsi.service.neomedia.event

Interface SimpleAudioLevelListener

public interface SimpleAudioLevelListener

A very simple listener that delivers int values every time the audio level of an audio source changes.

Author:

Emil Ivov

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_LEVEL The maximum level that can be reported for a participant in a conference.
static int	MIN_LEVEL The maximum (zero) level that can be reported for a participant in a conference.

Method Summary

Modifier and Type	Method and Description
void	audioLevelChanged(int level) Indicates a new audio level for the source that this listener was registered with.

Field Detail

MAX_LEVEL

static final int MAX_LEVEL

The maximum level that can be reported for a participant in a conference. Level values should be distributed between MAX_LEVEL and MIN_LEVEL in a way that would appear uniform to users.

Note: The value of 127 is specifically chosen as the value of MAX_LEVEL because (1) we transport the levels within RTP and it gives us a signed byte for it, and (2) the range of [0, 127] is pretty good to directly express the sound pressure level decibels as heard by humans in Earth's atmosphere.

See Also:

Constant Field Values

MIN_LEVEL

static final int MIN_LEVEL

The maximum (zero) level that can be reported for a participant in a conference. Level values should be distributed among MAX_LEVEL and MIN_LEVEL in a way that would appear uniform to users.

Note: The value of 0 is specifically chosen as the value of MIN_LEVEL because (1) we transport the levels within RTP and it gives us a signed byte for it, and (2) the range of [0, 127] is pretty good to directly express the sound pressure level decibels as heard by humans in Earth's atmosphere.

See Also:

Constant Field Values

Method Detail

audioLevelChanged

void audioLevelChanged(int level)

Indicates a new audio level for the source that this listener was registered with.

Parameters:

level - the new/current level of the audio source that this listener is registered with.