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70 lines
3.1 KiB
XML
70 lines
3.1 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="AudioEffectCapture" inherits="AudioEffect" version="3.11">
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<brief_description>
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Captures audio from an audio bus in real-time.
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</brief_description>
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<description>
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AudioEffectCapture is an AudioEffect which copies all audio frames from the attached audio effect bus into its internal ring buffer.
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Application code should consume these audio frames from this ring buffer using [method get_buffer] and process it as needed, for example to capture data from an [AudioStreamMicrophone], implement application-defined effects, or to transmit audio over the network. When capturing audio data from a microphone, the format of the samples will be stereo 32-bit floating point PCM.
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[b]Note:[/b] [member ProjectSettings.audio/enable_audio_input] must be [code]true[/code] for audio input to work. See also that setting's description for caveats related to permissions and operating system privacy settings.
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</description>
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<tutorials>
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<link title="Audio buses">$DOCS_URL/tutorials/audio/audio_buses.html</link>
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<link title="Audio Mic Record Demo">https://github.com/godotengine/godot-demo-projects/tree/master/audio/mic_record</link>
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</tutorials>
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<methods>
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<method name="can_get_buffer" qualifiers="const">
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<return type="bool" />
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<argument index="0" name="frames" type="int" />
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<description>
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Returns [code]true[/code] if at least [code]frames[/code] audio frames are available to read in the internal ring buffer.
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</description>
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</method>
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<method name="clear_buffer">
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<return type="void" />
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<description>
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Clears the internal ring buffer.
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</description>
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</method>
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<method name="get_buffer">
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<return type="PoolVector2Array" />
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<argument index="0" name="frames" type="int" />
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<description>
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Gets the next [code]frames[/code] audio samples from the internal ring buffer.
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Returns a [PoolVector2Array] containing exactly [code]frames[/code] audio samples if available, or an empty [PoolVector2Array] if insufficient data was available.
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</description>
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</method>
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<method name="get_buffer_length_frames" qualifiers="const">
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<return type="int" />
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<description>
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Returns the total size of the internal ring buffer in frames.
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</description>
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</method>
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<method name="get_discarded_frames" qualifiers="const">
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<return type="int" />
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<description>
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Returns the number of audio frames discarded from the audio bus due to full buffer.
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</description>
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</method>
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<method name="get_frames_available" qualifiers="const">
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<return type="int" />
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<description>
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Returns the number of frames available to read using [method get_buffer].
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</description>
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</method>
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<method name="get_pushed_frames" qualifiers="const">
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<return type="int" />
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<description>
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Returns the number of audio frames inserted from the audio bus.
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</description>
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</method>
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</methods>
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<members>
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<member name="buffer_length" type="float" setter="set_buffer_length" getter="get_buffer_length" default="0.1">
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Length of the internal ring buffer, in seconds. Setting the buffer length will have no effect if already initialized.
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</member>
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</members>
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<constants>
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</constants>
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</class>
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