AudioStream

Inherits: Resource < RefCounted < Object

Inherited By: AudioStreamGenerator, AudioStreamInteractive, AudioStreamMicrophone, AudioStreamMP3, AudioStreamOggVorbis, AudioStreamPlaylist, AudioStreamPolyphonic, AudioStreamRandomizer, AudioStreamSynchronized, AudioStreamWAV

Base class for audio streams.

Description

Base class for audio streams. Audio streams are used for sound effects and music playback, and support WAV (via AudioStreamWAV) and Ogg (via AudioStreamOggVorbis) file formats.

Tutorials

• Audio streams

• Audio Generator Demo

• Audio Microphone Record Demo

• Audio Spectrum Visualizer Demo

Methods

Signals

parameter_list_changed() 🔗

Signal to be emitted to notify when the parameter list changed.

Method Descriptions

int _get_beat_count() virtual const 🔗

Overridable method. Should return the total number of beats of this audio stream. Used by the engine to determine the position of every beat.

Ideally, the returned value should be based off the stream’s sample rate (AudioStreamWAV.mix_rate, for example).

float _get_bpm() virtual const 🔗

Overridable method. Should return the tempo of this audio stream, in beats per minute (BPM). Used by the engine to determine the position of every beat.

Ideally, the returned value should be based off the stream’s sample rate (AudioStreamWAV.mix_rate, for example).

float _get_length() virtual const 🔗

Override this method to customize the returned value of get_length. Should return the length of this audio stream, in seconds.

Array[Dictionary] _get_parameter_list() virtual const 🔗

Return the controllable parameters of this stream. This array contains dictionaries with a property info description format (see Object.get_property_list). Additionally, the default value for this parameter must be added tho each dictionary in “default_value” field.

String _get_stream_name() virtual const 🔗

Override this method to customize the name assigned to this audio stream. Unused by the engine.

AudioStreamPlayback _instantiate_playback() virtual const 🔗

Override this method to customize the returned value of instantiate_playback. Should returned a new AudioStreamPlayback created when the stream is played (such as by an AudioStreamPlayer)..

bool _is_monophonic() virtual const 🔗

Override this method to customize the returned value of is_monophonic. Should return true if this audio stream only supports one channel.

bool can_be_sampled() const 🔗

Experimental: This method may be changed or removed in future versions.

Returns if the current AudioStream can be used as a sample. Only static streams can be sampled.

AudioSample generate_sample() const 🔗

Experimental: This method may be changed or removed in future versions.

Generates an AudioSample based on the current stream.

float get_length() const 🔗

Returns the length of the audio stream in seconds.

AudioStreamPlayback instantiate_playback() 🔗

Returns a newly created AudioStreamPlayback intended to play this audio stream. Useful for when you want to extend _instantiate_playback but call instantiate_playback from an internally held AudioStream subresource. An example of this can be found in the source code for AudioStreamRandomPitch::instantiate_playback.

bool is_meta_stream() const 🔗

Returns true if the stream is a collection of other streams, false otherwise.

bool is_monophonic() const 🔗

Returns true if this audio stream only supports one channel (monophony), or false if the audio stream supports two or more channels (polyphony).

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