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81064cc239
We don't use that info for anything, and it generates unnecessary diffs every time we bump the minor version (and CI failures if we forget to sync some files from opt-in modules (mono, text_server_fb).
105 lines
4.3 KiB
XML
105 lines
4.3 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="VideoStreamPlayback" inherits="Resource" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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Internal class used by [VideoStream] to manage playback state when played from a [VideoStreamPlayer].
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</brief_description>
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<description>
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This class is intended to be overridden by video decoder extensions with custom implementations of [VideoStream].
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="_get_channels" qualifiers="virtual const">
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<return type="int" />
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<description>
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Returns the number of audio channels.
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</description>
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</method>
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<method name="_get_length" qualifiers="virtual const">
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<return type="float" />
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<description>
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Returns the video duration in seconds, if known, or 0 if unknown.
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</description>
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</method>
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<method name="_get_mix_rate" qualifiers="virtual const">
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<return type="int" />
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<description>
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Returns the audio sample rate used for mixing.
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</description>
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</method>
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<method name="_get_playback_position" qualifiers="virtual const">
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<return type="float" />
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<description>
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Return the current playback timestamp. Called in response to the [member VideoStreamPlayer.stream_position] getter.
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</description>
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</method>
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<method name="_get_texture" qualifiers="virtual const">
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<return type="Texture2D" />
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<description>
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Allocates a [Texture2D] in which decoded video frames will be drawn.
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</description>
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</method>
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<method name="_is_paused" qualifiers="virtual const">
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<return type="bool" />
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<description>
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Returns the paused status, as set by [method _set_paused].
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</description>
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</method>
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<method name="_is_playing" qualifiers="virtual const">
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<return type="bool" />
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<description>
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Returns the playback state, as determined by calls to [method _play] and [method _stop].
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</description>
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</method>
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<method name="_play" qualifiers="virtual">
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<return type="void" />
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<description>
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Called in response to [member VideoStreamPlayer.autoplay] or [method VideoStreamPlayer.play]. Note that manual playback may also invoke [method _stop] multiple times before this method is called. [method _is_playing] should return true once playing.
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</description>
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</method>
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<method name="_seek" qualifiers="virtual">
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<return type="void" />
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<param index="0" name="time" type="float" />
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<description>
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Seeks to [param time] seconds. Called in response to the [member VideoStreamPlayer.stream_position] setter.
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</description>
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</method>
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<method name="_set_audio_track" qualifiers="virtual">
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<return type="void" />
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<param index="0" name="idx" type="int" />
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<description>
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Select the audio track [param idx]. Called when playback starts, and in response to the [member VideoStreamPlayer.audio_track] setter.
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</description>
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</method>
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<method name="_set_paused" qualifiers="virtual">
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<return type="void" />
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<param index="0" name="paused" type="bool" />
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<description>
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Set the paused status of video playback. [method _is_paused] must return [param paused]. Called in response to the [member VideoStreamPlayer.paused] setter.
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</description>
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</method>
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<method name="_stop" qualifiers="virtual">
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<return type="void" />
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<description>
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Stops playback. May be called multiple times before [method _play], or in response to [method VideoStreamPlayer.stop]. [method _is_playing] should return false once stopped.
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</description>
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</method>
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<method name="_update" qualifiers="virtual">
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<return type="void" />
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<param index="0" name="delta" type="float" />
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<description>
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Ticks video playback for [param delta] seconds. Called every frame as long as [method _is_paused] and [method _is_playing] return true.
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</description>
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</method>
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<method name="mix_audio">
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<return type="int" />
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<param index="0" name="num_frames" type="int" />
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<param index="1" name="buffer" type="PackedFloat32Array" default="PackedFloat32Array()" />
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<param index="2" name="offset" type="int" default="0" />
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<description>
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Render [param num_frames] audio frames (of [method _get_channels] floats each) from [param buffer], starting from index [param offset] in the array. Returns the number of audio frames rendered, or -1 on error.
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</description>
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</method>
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</methods>
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</class>
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