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394 lines
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ReStructuredText
394 lines
16 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/master/doc/tools/make_rst.py.
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.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/AudioStreamWAV.xml.
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.. _class_AudioStreamWAV:
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AudioStreamWAV
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==============
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**Inherits:** :ref:`AudioStream<class_AudioStream>` **<** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`
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Stores audio data loaded from WAV files.
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.. rst-class:: classref-introduction-group
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Description
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-----------
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AudioStreamWAV 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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.. rst-class:: classref-introduction-group
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Tutorials
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---------
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- :doc:`Runtime file loading and saving <../tutorials/io/runtime_file_loading_and_saving>`
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.. rst-class:: classref-reftable-group
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Properties
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----------
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.. table::
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:widths: auto
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`PackedByteArray<class_PackedByteArray>` | :ref:`data<class_AudioStreamWAV_property_data>` | ``PackedByteArray()`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`Format<enum_AudioStreamWAV_Format>` | :ref:`format<class_AudioStreamWAV_property_format>` | ``0`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`int<class_int>` | :ref:`loop_begin<class_AudioStreamWAV_property_loop_begin>` | ``0`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`int<class_int>` | :ref:`loop_end<class_AudioStreamWAV_property_loop_end>` | ``0`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` | :ref:`loop_mode<class_AudioStreamWAV_property_loop_mode>` | ``0`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`int<class_int>` | :ref:`mix_rate<class_AudioStreamWAV_property_mix_rate>` | ``44100`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`bool<class_bool>` | :ref:`stereo<class_AudioStreamWAV_property_stereo>` | ``false`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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| :ref:`Dictionary<class_Dictionary>` | :ref:`tags<class_AudioStreamWAV_property_tags>` | ``{}`` |
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+-----------------------------------------------+-------------------------------------------------------------+-----------------------+
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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:`AudioStreamWAV<class_AudioStreamWAV>` | :ref:`load_from_buffer<class_AudioStreamWAV_method_load_from_buffer>`\ (\ stream_data\: :ref:`PackedByteArray<class_PackedByteArray>`, options\: :ref:`Dictionary<class_Dictionary>` = {}\ ) |static| |
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+---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`AudioStreamWAV<class_AudioStreamWAV>` | :ref:`load_from_file<class_AudioStreamWAV_method_load_from_file>`\ (\ path\: :ref:`String<class_String>`, options\: :ref:`Dictionary<class_Dictionary>` = {}\ ) |static| |
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+---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Error<enum_@GlobalScope_Error>` | :ref:`save_to_wav<class_AudioStreamWAV_method_save_to_wav>`\ (\ path\: :ref:`String<class_String>`\ ) |
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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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Enumerations
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------------
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.. _enum_AudioStreamWAV_Format:
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.. rst-class:: classref-enumeration
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enum **Format**: :ref:`🔗<enum_AudioStreamWAV_Format>`
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.. _class_AudioStreamWAV_constant_FORMAT_8_BITS:
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.. rst-class:: classref-enumeration-constant
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:ref:`Format<enum_AudioStreamWAV_Format>` **FORMAT_8_BITS** = ``0``
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8-bit PCM audio codec.
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.. _class_AudioStreamWAV_constant_FORMAT_16_BITS:
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.. rst-class:: classref-enumeration-constant
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:ref:`Format<enum_AudioStreamWAV_Format>` **FORMAT_16_BITS** = ``1``
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16-bit PCM audio codec.
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.. _class_AudioStreamWAV_constant_FORMAT_IMA_ADPCM:
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.. rst-class:: classref-enumeration-constant
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:ref:`Format<enum_AudioStreamWAV_Format>` **FORMAT_IMA_ADPCM** = ``2``
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Audio is lossily compressed as IMA ADPCM.
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.. _class_AudioStreamWAV_constant_FORMAT_QOA:
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.. rst-class:: classref-enumeration-constant
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:ref:`Format<enum_AudioStreamWAV_Format>` **FORMAT_QOA** = ``3``
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Audio is lossily compressed as `Quite OK Audio <https://qoaformat.org/>`__.
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.. rst-class:: classref-item-separator
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----
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.. _enum_AudioStreamWAV_LoopMode:
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.. rst-class:: classref-enumeration
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enum **LoopMode**: :ref:`🔗<enum_AudioStreamWAV_LoopMode>`
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.. _class_AudioStreamWAV_constant_LOOP_DISABLED:
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.. rst-class:: classref-enumeration-constant
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:ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` **LOOP_DISABLED** = ``0``
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Audio does not loop.
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.. _class_AudioStreamWAV_constant_LOOP_FORWARD:
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.. rst-class:: classref-enumeration-constant
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:ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` **LOOP_FORWARD** = ``1``
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Audio loops the data between :ref:`loop_begin<class_AudioStreamWAV_property_loop_begin>` and :ref:`loop_end<class_AudioStreamWAV_property_loop_end>`, playing forward only.
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.. _class_AudioStreamWAV_constant_LOOP_PINGPONG:
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.. rst-class:: classref-enumeration-constant
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:ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` **LOOP_PINGPONG** = ``2``
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Audio loops the data between :ref:`loop_begin<class_AudioStreamWAV_property_loop_begin>` and :ref:`loop_end<class_AudioStreamWAV_property_loop_end>`, playing back and forth.
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.. _class_AudioStreamWAV_constant_LOOP_BACKWARD:
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.. rst-class:: classref-enumeration-constant
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:ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` **LOOP_BACKWARD** = ``3``
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Audio loops the data between :ref:`loop_begin<class_AudioStreamWAV_property_loop_begin>` and :ref:`loop_end<class_AudioStreamWAV_property_loop_end>`, playing backward only.
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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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Property Descriptions
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---------------------
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.. _class_AudioStreamWAV_property_data:
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.. rst-class:: classref-property
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:ref:`PackedByteArray<class_PackedByteArray>` **data** = ``PackedByteArray()`` :ref:`🔗<class_AudioStreamWAV_property_data>`
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.. rst-class:: classref-property-setget
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- |void| **set_data**\ (\ value\: :ref:`PackedByteArray<class_PackedByteArray>`\ )
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- :ref:`PackedByteArray<class_PackedByteArray>` **get_data**\ (\ )
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Contains the audio data in bytes.
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\ **Note:** If :ref:`format<class_AudioStreamWAV_property_format>` is set to :ref:`FORMAT_8_BITS<class_AudioStreamWAV_constant_FORMAT_8_BITS>`, this property expects signed 8-bit PCM data. To convert from unsigned 8-bit PCM, subtract 128 from each byte.
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\ **Note:** If :ref:`format<class_AudioStreamWAV_property_format>` is set to :ref:`FORMAT_QOA<class_AudioStreamWAV_constant_FORMAT_QOA>`, this property expects data from a full QOA file.
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**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedByteArray<class_PackedByteArray>` for more details.
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_format:
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.. rst-class:: classref-property
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:ref:`Format<enum_AudioStreamWAV_Format>` **format** = ``0`` :ref:`🔗<class_AudioStreamWAV_property_format>`
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.. rst-class:: classref-property-setget
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- |void| **set_format**\ (\ value\: :ref:`Format<enum_AudioStreamWAV_Format>`\ )
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- :ref:`Format<enum_AudioStreamWAV_Format>` **get_format**\ (\ )
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Audio format.
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_loop_begin:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **loop_begin** = ``0`` :ref:`🔗<class_AudioStreamWAV_property_loop_begin>`
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.. rst-class:: classref-property-setget
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- |void| **set_loop_begin**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_loop_begin**\ (\ )
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The loop start point (in number of samples, relative to the beginning of the stream).
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_loop_end:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **loop_end** = ``0`` :ref:`🔗<class_AudioStreamWAV_property_loop_end>`
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.. rst-class:: classref-property-setget
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- |void| **set_loop_end**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_loop_end**\ (\ )
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The loop end point (in number of samples, relative to the beginning of the stream).
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_loop_mode:
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.. rst-class:: classref-property
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:ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` **loop_mode** = ``0`` :ref:`🔗<class_AudioStreamWAV_property_loop_mode>`
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.. rst-class:: classref-property-setget
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- |void| **set_loop_mode**\ (\ value\: :ref:`LoopMode<enum_AudioStreamWAV_LoopMode>`\ )
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- :ref:`LoopMode<enum_AudioStreamWAV_LoopMode>` **get_loop_mode**\ (\ )
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The loop mode.
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_mix_rate:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **mix_rate** = ``44100`` :ref:`🔗<class_AudioStreamWAV_property_mix_rate>`
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.. rst-class:: classref-property-setget
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- |void| **set_mix_rate**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_mix_rate**\ (\ )
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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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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_stereo:
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.. rst-class:: classref-property
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:ref:`bool<class_bool>` **stereo** = ``false`` :ref:`🔗<class_AudioStreamWAV_property_stereo>`
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.. rst-class:: classref-property-setget
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- |void| **set_stereo**\ (\ value\: :ref:`bool<class_bool>`\ )
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- :ref:`bool<class_bool>` **is_stereo**\ (\ )
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If ``true``, audio is stereo.
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_property_tags:
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.. rst-class:: classref-property
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:ref:`Dictionary<class_Dictionary>` **tags** = ``{}`` :ref:`🔗<class_AudioStreamWAV_property_tags>`
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.. rst-class:: classref-property-setget
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- |void| **set_tags**\ (\ value\: :ref:`Dictionary<class_Dictionary>`\ )
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- :ref:`Dictionary<class_Dictionary>` **get_tags**\ (\ )
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Contains user-defined tags if found in the WAV data.
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Commonly used tags include ``title``, ``artist``, ``album``, ``tracknumber``, and ``date`` (``date`` does not have a standard date format).
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\ **Note:** No tag is *guaranteed* to be present in every file, so make sure to account for the keys not always existing.
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\ **Note:** Only WAV files using a ``LIST`` chunk with an identifier of ``INFO`` to encode the tags are currently supported.
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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_AudioStreamWAV_method_load_from_buffer:
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.. rst-class:: classref-method
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:ref:`AudioStreamWAV<class_AudioStreamWAV>` **load_from_buffer**\ (\ stream_data\: :ref:`PackedByteArray<class_PackedByteArray>`, options\: :ref:`Dictionary<class_Dictionary>` = {}\ ) |static| :ref:`🔗<class_AudioStreamWAV_method_load_from_buffer>`
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Creates a new **AudioStreamWAV** instance from the given buffer. The buffer must contain WAV data.
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The keys and values of ``options`` match the properties of :ref:`ResourceImporterWAV<class_ResourceImporterWAV>`. The usage of ``options`` is identical to :ref:`load_from_file()<class_AudioStreamWAV_method_load_from_file>`.
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_method_load_from_file:
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.. rst-class:: classref-method
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:ref:`AudioStreamWAV<class_AudioStreamWAV>` **load_from_file**\ (\ path\: :ref:`String<class_String>`, options\: :ref:`Dictionary<class_Dictionary>` = {}\ ) |static| :ref:`🔗<class_AudioStreamWAV_method_load_from_file>`
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Creates a new **AudioStreamWAV** instance from the given file path. The file must be in WAV format.
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The keys and values of ``options`` match the properties of :ref:`ResourceImporterWAV<class_ResourceImporterWAV>`.
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\ **Example:** Load the first file dropped as a WAV and play it:
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::
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@onready var audio_player = $AudioStreamPlayer
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func _ready():
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get_window().files_dropped.connect(_on_files_dropped)
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func _on_files_dropped(files):
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if files[0].get_extension() == "wav":
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audio_player.stream = AudioStreamWAV.load_from_file(files[0], {
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"force/max_rate": true,
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"force/max_rate_hz": 11025
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})
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audio_player.play()
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.. rst-class:: classref-item-separator
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----
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.. _class_AudioStreamWAV_method_save_to_wav:
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.. rst-class:: classref-method
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:ref:`Error<enum_@GlobalScope_Error>` **save_to_wav**\ (\ path\: :ref:`String<class_String>`\ ) :ref:`🔗<class_AudioStreamWAV_method_save_to_wav>`
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Saves the AudioStreamWAV as a WAV file to ``path``. Samples with IMA ADPCM or Quite OK Audio formats 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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.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
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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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.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
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.. |void| replace:: :abbr:`void (No return value.)`
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