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241 lines
14 KiB
ReStructuredText
241 lines
14 KiB
ReStructuredText
:github_url: hide
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.. DO NOT EDIT THIS FILE!!!
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.. Generated automatically from Godot engine sources.
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.. Generator: https://github.com/godotengine/godot/tree/4.0/doc/tools/make_rst.py.
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.. XML source: https://github.com/godotengine/godot/tree/4.0/doc/classes/VideoStreamPlayback.xml.
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.. _class_VideoStreamPlayback:
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VideoStreamPlayback
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===================
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**Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`
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Internal class used by :ref:`VideoStream<class_VideoStream>` to manage playback state when played from a :ref:`VideoStreamPlayer<class_VideoStreamPlayer>`.
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.. rst-class:: classref-introduction-group
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Description
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-----------
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This class is intended to be overridden by video decoder extensions with custom implementations of :ref:`VideoStream<class_VideoStream>`.
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.. rst-class:: classref-reftable-group
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Methods
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-------
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.. table::
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:widths: auto
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`int<class_int>` | :ref:`_get_channels<class_VideoStreamPlayback_method__get_channels>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`_get_length<class_VideoStreamPlayback_method__get_length>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`int<class_int>` | :ref:`_get_mix_rate<class_VideoStreamPlayback_method__get_mix_rate>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`_get_playback_position<class_VideoStreamPlayback_method__get_playback_position>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Texture2D<class_Texture2D>` | :ref:`_get_texture<class_VideoStreamPlayback_method__get_texture>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`_is_paused<class_VideoStreamPlayback_method__is_paused>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`_is_playing<class_VideoStreamPlayback_method__is_playing>` **(** **)** |virtual| |const| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| void | :ref:`_play<class_VideoStreamPlayback_method__play>` **(** **)** |virtual| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| void | :ref:`_seek<class_VideoStreamPlayback_method__seek>` **(** :ref:`float<class_float>` time **)** |virtual| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| void | :ref:`_set_audio_track<class_VideoStreamPlayback_method__set_audio_track>` **(** :ref:`int<class_int>` idx **)** |virtual| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| void | :ref:`_set_paused<class_VideoStreamPlayback_method__set_paused>` **(** :ref:`bool<class_bool>` paused **)** |virtual| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| void | :ref:`_stop<class_VideoStreamPlayback_method__stop>` **(** **)** |virtual| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| void | :ref:`_update<class_VideoStreamPlayback_method__update>` **(** :ref:`float<class_float>` delta **)** |virtual| |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`int<class_int>` | :ref:`mix_audio<class_VideoStreamPlayback_method_mix_audio>` **(** :ref:`int<class_int>` num_frames, :ref:`PackedFloat32Array<class_PackedFloat32Array>` buffer=PackedFloat32Array(), :ref:`int<class_int>` offset=0 **)** |
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+-----------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Method Descriptions
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-------------------
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.. _class_VideoStreamPlayback_method__get_channels:
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.. rst-class:: classref-method
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:ref:`int<class_int>` **_get_channels** **(** **)** |virtual| |const|
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Returns the number of audio channels.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__get_length:
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.. rst-class:: classref-method
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:ref:`float<class_float>` **_get_length** **(** **)** |virtual| |const|
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Returns the video duration in seconds, if known, or 0 if unknown.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__get_mix_rate:
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.. rst-class:: classref-method
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:ref:`int<class_int>` **_get_mix_rate** **(** **)** |virtual| |const|
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Returns the audio sample rate used for mixing.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__get_playback_position:
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.. rst-class:: classref-method
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:ref:`float<class_float>` **_get_playback_position** **(** **)** |virtual| |const|
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Return the current playback timestamp. Called in response to the :ref:`VideoStreamPlayer.stream_position<class_VideoStreamPlayer_property_stream_position>` getter.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__get_texture:
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.. rst-class:: classref-method
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:ref:`Texture2D<class_Texture2D>` **_get_texture** **(** **)** |virtual| |const|
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Allocates a :ref:`Texture2D<class_Texture2D>` in which decoded video frames will be drawn.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__is_paused:
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.. rst-class:: classref-method
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:ref:`bool<class_bool>` **_is_paused** **(** **)** |virtual| |const|
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Returns the paused status, as set by :ref:`_set_paused<class_VideoStreamPlayback_method__set_paused>`.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__is_playing:
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.. rst-class:: classref-method
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:ref:`bool<class_bool>` **_is_playing** **(** **)** |virtual| |const|
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Returns the playback state, as determined by calls to :ref:`_play<class_VideoStreamPlayback_method__play>` and :ref:`_stop<class_VideoStreamPlayback_method__stop>`.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__play:
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.. rst-class:: classref-method
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void **_play** **(** **)** |virtual|
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Called in response to :ref:`VideoStreamPlayer.autoplay<class_VideoStreamPlayer_property_autoplay>` or :ref:`VideoStreamPlayer.play<class_VideoStreamPlayer_method_play>`. Note that manual playback may also invoke :ref:`_stop<class_VideoStreamPlayback_method__stop>` multiple times before this method is called. :ref:`_is_playing<class_VideoStreamPlayback_method__is_playing>` should return true once playing.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__seek:
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.. rst-class:: classref-method
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void **_seek** **(** :ref:`float<class_float>` time **)** |virtual|
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Seeks to ``time`` seconds. Called in response to the :ref:`VideoStreamPlayer.stream_position<class_VideoStreamPlayer_property_stream_position>` setter.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__set_audio_track:
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.. rst-class:: classref-method
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void **_set_audio_track** **(** :ref:`int<class_int>` idx **)** |virtual|
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Select the audio track ``idx``. Called when playback starts, and in response to the :ref:`VideoStreamPlayer.audio_track<class_VideoStreamPlayer_property_audio_track>` setter.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__set_paused:
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.. rst-class:: classref-method
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void **_set_paused** **(** :ref:`bool<class_bool>` paused **)** |virtual|
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Set the paused status of video playback. :ref:`_is_paused<class_VideoStreamPlayback_method__is_paused>` must return ``paused``. Called in response to the :ref:`VideoStreamPlayer.paused<class_VideoStreamPlayer_property_paused>` setter.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__stop:
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.. rst-class:: classref-method
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void **_stop** **(** **)** |virtual|
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Stops playback. May be called multiple times before :ref:`_play<class_VideoStreamPlayback_method__play>`, or in response to :ref:`VideoStreamPlayer.stop<class_VideoStreamPlayer_method_stop>`. :ref:`_is_playing<class_VideoStreamPlayback_method__is_playing>` should return false once stopped.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method__update:
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.. rst-class:: classref-method
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void **_update** **(** :ref:`float<class_float>` delta **)** |virtual|
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Ticks video playback for ``delta`` seconds. Called every frame as long as :ref:`_is_paused<class_VideoStreamPlayback_method__is_paused>` and :ref:`_is_playing<class_VideoStreamPlayback_method__is_playing>` return true.
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.. rst-class:: classref-item-separator
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----
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.. _class_VideoStreamPlayback_method_mix_audio:
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.. rst-class:: classref-method
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:ref:`int<class_int>` **mix_audio** **(** :ref:`int<class_int>` num_frames, :ref:`PackedFloat32Array<class_PackedFloat32Array>` buffer=PackedFloat32Array(), :ref:`int<class_int>` offset=0 **)**
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Render ``num_frames`` audio frames (of :ref:`_get_channels<class_VideoStreamPlayback_method__get_channels>` floats each) from ``buffer``, starting from index ``offset`` in the array. Returns the number of audio frames rendered, or -1 on error.
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.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
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.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
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.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
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.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
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.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
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.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
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