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223 lines
9.5 KiB
ReStructuredText
223 lines
9.5 KiB
ReStructuredText
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.. Generated automatically by doc/tools/make_rst.py in Godot's source tree.
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.. DO NOT EDIT THIS FILE, but the AudioStreamSample.xml source instead.
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.. The source is found in doc/classes or modules/<name>/doc_classes.
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.. _class_AudioStreamSample:
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AudioStreamSample
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=================
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**Inherits:** :ref:`AudioStream<class_AudioStream>` **<** :ref:`Resource<class_Resource>` **<** :ref:`Reference<class_Reference>` **<** :ref:`Object<class_Object>`
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Stores audio data loaded from WAV files.
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Description
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-----------
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AudioStreamSample stores sound samples loaded from WAV files. To play the stored sound, use an :ref:`AudioStreamPlayer<class_AudioStreamPlayer>` (for non-positional audio) or :ref:`AudioStreamPlayer2D<class_AudioStreamPlayer2D>`/:ref:`AudioStreamPlayer3D<class_AudioStreamPlayer3D>` (for positional audio). The sound can be looped.
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This class can also be used to store dynamically-generated PCM audio data. See also :ref:`AudioStreamGenerator<class_AudioStreamGenerator>` for procedural audio generation.
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Properties
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----------
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`PoolByteArray<class_PoolByteArray>` | :ref:`data<class_AudioStreamSample_property_data>` | ``PoolByteArray( )`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`Format<enum_AudioStreamSample_Format>` | :ref:`format<class_AudioStreamSample_property_format>` | ``0`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`int<class_int>` | :ref:`loop_begin<class_AudioStreamSample_property_loop_begin>` | ``0`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`int<class_int>` | :ref:`loop_end<class_AudioStreamSample_property_loop_end>` | ``0`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`LoopMode<enum_AudioStreamSample_LoopMode>` | :ref:`loop_mode<class_AudioStreamSample_property_loop_mode>` | ``0`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`int<class_int>` | :ref:`mix_rate<class_AudioStreamSample_property_mix_rate>` | ``44100`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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| :ref:`bool<class_bool>` | :ref:`stereo<class_AudioStreamSample_property_stereo>` | ``false`` |
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+--------------------------------------------------+----------------------------------------------------------------+-----------------------+
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Methods
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-------
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------+
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| :ref:`Error<enum_@GlobalScope_Error>` | :ref:`save_to_wav<class_AudioStreamSample_method_save_to_wav>` **(** :ref:`String<class_String>` path **)** |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------+
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Enumerations
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------------
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.. _enum_AudioStreamSample_Format:
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.. _class_AudioStreamSample_constant_FORMAT_8_BITS:
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.. _class_AudioStreamSample_constant_FORMAT_16_BITS:
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.. _class_AudioStreamSample_constant_FORMAT_IMA_ADPCM:
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enum **Format**:
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- **FORMAT_8_BITS** = **0** --- 8-bit audio codec.
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- **FORMAT_16_BITS** = **1** --- 16-bit audio codec.
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- **FORMAT_IMA_ADPCM** = **2** --- Audio is compressed using IMA ADPCM.
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----
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.. _enum_AudioStreamSample_LoopMode:
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.. _class_AudioStreamSample_constant_LOOP_DISABLED:
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.. _class_AudioStreamSample_constant_LOOP_FORWARD:
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.. _class_AudioStreamSample_constant_LOOP_PING_PONG:
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.. _class_AudioStreamSample_constant_LOOP_BACKWARD:
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enum **LoopMode**:
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- **LOOP_DISABLED** = **0** --- Audio does not loop.
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- **LOOP_FORWARD** = **1** --- Audio loops the data between :ref:`loop_begin<class_AudioStreamSample_property_loop_begin>` and :ref:`loop_end<class_AudioStreamSample_property_loop_end>`, playing forward only.
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- **LOOP_PING_PONG** = **2** --- Audio loops the data between :ref:`loop_begin<class_AudioStreamSample_property_loop_begin>` and :ref:`loop_end<class_AudioStreamSample_property_loop_end>`, playing back and forth.
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- **LOOP_BACKWARD** = **3** --- Audio loops the data between :ref:`loop_begin<class_AudioStreamSample_property_loop_begin>` and :ref:`loop_end<class_AudioStreamSample_property_loop_end>`, playing backward only.
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Property Descriptions
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---------------------
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.. _class_AudioStreamSample_property_data:
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- :ref:`PoolByteArray<class_PoolByteArray>` **data**
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+-----------+-----------------------+
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| *Default* | ``PoolByteArray( )`` |
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+-----------+-----------------------+
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| *Setter* | set_data(value) |
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+-----------+-----------------------+
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| *Getter* | get_data() |
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+-----------+-----------------------+
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Contains the audio data in bytes.
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**Note:** This property expects signed PCM8 data. To convert unsigned PCM8 to signed PCM8, subtract 128 from each byte.
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----
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.. _class_AudioStreamSample_property_format:
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- :ref:`Format<enum_AudioStreamSample_Format>` **format**
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+-----------+-------------------+
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| *Default* | ``0`` |
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+-----------+-------------------+
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| *Setter* | set_format(value) |
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+-----------+-------------------+
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| *Getter* | get_format() |
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+-----------+-------------------+
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Audio format. See :ref:`Format<enum_AudioStreamSample_Format>` constants for values.
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----
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.. _class_AudioStreamSample_property_loop_begin:
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- :ref:`int<class_int>` **loop_begin**
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+-----------+-----------------------+
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| *Default* | ``0`` |
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+-----------+-----------------------+
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| *Setter* | set_loop_begin(value) |
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+-----------+-----------------------+
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| *Getter* | get_loop_begin() |
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+-----------+-----------------------+
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The loop start point (in number of samples, relative to the beginning of the sample). This information will be imported automatically from the WAV file if present.
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----
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.. _class_AudioStreamSample_property_loop_end:
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- :ref:`int<class_int>` **loop_end**
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+-----------+---------------------+
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| *Default* | ``0`` |
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+-----------+---------------------+
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| *Setter* | set_loop_end(value) |
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+-----------+---------------------+
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| *Getter* | get_loop_end() |
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+-----------+---------------------+
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The loop end point (in number of samples, relative to the beginning of the sample). This information will be imported automatically from the WAV file if present.
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----
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.. _class_AudioStreamSample_property_loop_mode:
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- :ref:`LoopMode<enum_AudioStreamSample_LoopMode>` **loop_mode**
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+-----------+----------------------+
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| *Default* | ``0`` |
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+-----------+----------------------+
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| *Setter* | set_loop_mode(value) |
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+-----------+----------------------+
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| *Getter* | get_loop_mode() |
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+-----------+----------------------+
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The loop mode. This information will be imported automatically from the WAV file if present. See :ref:`LoopMode<enum_AudioStreamSample_LoopMode>` constants for values.
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----
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.. _class_AudioStreamSample_property_mix_rate:
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- :ref:`int<class_int>` **mix_rate**
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+-----------+---------------------+
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| *Default* | ``44100`` |
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+-----------+---------------------+
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| *Setter* | set_mix_rate(value) |
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+-----------+---------------------+
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| *Getter* | get_mix_rate() |
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+-----------+---------------------+
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The sample rate for mixing this audio. Higher values require more storage space, but result in better quality.
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In games, common sample rates in use are ``11025``, ``16000``, ``22050``, ``32000``, ``44100``, and ``48000``.
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According to the `Nyquist-Shannon sampling theorem <https://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem>`__, there is no quality difference to human hearing when going past 40,000 Hz (since most humans can only hear up to ~20,000 Hz, often less). If you are using lower-pitched sounds such as voices, lower sample rates such as ``32000`` or ``22050`` may be usable with no loss in quality.
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----
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.. _class_AudioStreamSample_property_stereo:
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- :ref:`bool<class_bool>` **stereo**
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+-----------+-------------------+
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| *Default* | ``false`` |
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+-----------+-------------------+
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| *Setter* | set_stereo(value) |
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+-----------+-------------------+
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| *Getter* | is_stereo() |
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+-----------+-------------------+
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If ``true``, audio is stereo.
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Method Descriptions
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-------------------
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.. _class_AudioStreamSample_method_save_to_wav:
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- :ref:`Error<enum_@GlobalScope_Error>` **save_to_wav** **(** :ref:`String<class_String>` path **)**
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Saves the AudioStreamSample as a WAV file to ``path``. Samples with IMA ADPCM format can't be saved.
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**Note:** A ``.wav`` extension is automatically appended to ``path`` if it is missing.
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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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