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Implement BPM support

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Based on #62896, only implements the BPM support part.

* Implements BPM support in the AudioStreamOGG/MP3 importers.
* Can select BPM/Bar Size and total beats in a song file, as well as edit looping points.
* Looping is now BPM aware
* Added a special importer UI for configuring this.
* Added a special preview showing the audio waveform as well as the playback position in the resource picker.
* Renamed `AudioStream::instance` to `instantiate` for correctness.
This commit is contained in:
reduz 2022-07-21 01:00:58 +02:00 • committed by Juan Linietsky
parent 976cb7ea9f
commit d1ddee2258
41 changed files with 1548 additions and 438 deletions
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16
doc/classes/AudioStream.xml
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@ -13,6 +13,16 @@
<link title="Audio Spectrum Demo">https://godotengine.org/asset-library/asset/528</link>
</tutorials>
<methods>
<method name="_get_beat_count" qualifiers="virtual const">
<return type="int" />
<description>
</description>
</method>
<method name="_get_bpm" qualifiers="virtual const">
<return type="float" />
<description>
</description>
</method>
<method name="_get_length" qualifiers="virtual const">
<return type="float" />
<description>
@ -23,7 +33,7 @@
<description>
</description>
</method>
<method name="_instance_playback" qualifiers="virtual const">
<method name="_instantiate_playback" qualifiers="virtual const">
<return type="AudioStreamPlayback" />
<description>
</description>
@ -39,10 +49,10 @@
Returns the length of the audio stream in seconds.
</description>
</method>
<method name="instance_playback">
<method name="instantiate_playback">
<return type="AudioStreamPlayback" />
<description>
Returns an AudioStreamPlayback. Useful for when you want to extend `_instance_playback` but call `instance_playback` from an internally held AudioStream subresource. An example of this can be found in the source files for `AudioStreamRandomPitch::instance_playback`.
Returns an AudioStreamPlayback. Useful for when you want to extend [method _instantiate_playback] but call [method instantiate_playback] from an internally held AudioStream subresource. An example of this can be found in the source files for [code]AudioStreamRandomPitch::instantiate_playback[/code].
</description>
</method>
<method name="is_monophonic" qualifiers="const">