Feat: Indexed connect + channel merger/splitter #742
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,243 @@ | ||
| import React, { useRef, useState, useEffect, FC, useMemo } from 'react'; | ||
| import { Alert, ActivityIndicator } from 'react-native'; | ||
| import { | ||
| AudioContext, | ||
| AudioBufferSourceNode, | ||
| AudioBuffer, | ||
| } from 'react-native-audio-api'; | ||
|
|
||
| import { Container, Slider, Spacer, Button } from '../../components'; | ||
|
|
||
| // test url pointing to my public repo, to be changed / deleted | ||
| const AUDIO_URL = | ||
| 'https://github.com/miloszwielgus/test-files/raw/refs/heads/main/example-true-5-1.ogg'; | ||
|
|
||
| const INITIAL_GAIN = 0.5; | ||
| const labelWidth = 100; | ||
|
|
||
| const SplitterMerger: FC = () => { | ||
|
Collaborator
There was a problem hiding this comment. inconsistent file name with component name |
||
| const [isPlaying, setIsPlaying] = useState(false); | ||
| const [isLoading, setIsLoading] = useState(false); | ||
|
|
||
| const [gain1, setGain1] = useState(INITIAL_GAIN); | ||
| const [gain2, setGain2] = useState(INITIAL_GAIN); | ||
| const [gain3, setGain3] = useState(INITIAL_GAIN); | ||
| const [gain4, setGain4] = useState(INITIAL_GAIN); | ||
| const [gain5, setGain5] = useState(INITIAL_GAIN); | ||
| const [gain6, setGain6] = useState(INITIAL_GAIN); | ||
|
|
||
| const { | ||
| context, | ||
| splitter, | ||
| merger, | ||
| gainNode1, | ||
| gainNode2, | ||
| gainNode3, | ||
| gainNode4, | ||
| gainNode5, | ||
| gainNode6, | ||
| } = useMemo(() => { | ||
| const ctx = new AudioContext(); | ||
|
|
||
| const splitNode = ctx.createChannelSplitter(6); | ||
| const mergeNode = ctx.createChannelMerger(6); | ||
|
|
||
| const g1 = ctx.createGain(); | ||
| g1.gain.value = INITIAL_GAIN; | ||
| const g2 = ctx.createGain(); | ||
| g2.gain.value = INITIAL_GAIN; | ||
| const g3 = ctx.createGain(); | ||
| g3.gain.value = INITIAL_GAIN; | ||
| const g4 = ctx.createGain(); | ||
| g4.gain.value = INITIAL_GAIN; | ||
| const g5 = ctx.createGain(); | ||
| g5.gain.value = INITIAL_GAIN; | ||
| const g6 = ctx.createGain(); | ||
| g6.gain.value = INITIAL_GAIN; | ||
|
|
||
| splitNode.connect(g1, 0, 0); | ||
| g1.connect(mergeNode, 0, 0); | ||
| splitNode.connect(g2, 1, 0); | ||
| g2.connect(mergeNode, 0, 1); | ||
| splitNode.connect(g3, 2, 0); | ||
| g3.connect(mergeNode, 0, 2); | ||
| splitNode.connect(g4, 3, 0); | ||
| g4.connect(mergeNode, 0, 3); | ||
| splitNode.connect(g5, 4, 0); | ||
| g5.connect(mergeNode, 0, 4); | ||
| splitNode.connect(g6, 5, 0); | ||
| g6.connect(mergeNode, 0, 5); | ||
|
|
||
| mergeNode.connect(ctx.destination); | ||
|
|
||
| return { | ||
| context: ctx, | ||
| splitter: splitNode, | ||
| merger: mergeNode, | ||
| gainNode1: g1, | ||
| gainNode2: g2, | ||
| gainNode3: g3, | ||
| gainNode4: g4, | ||
| gainNode5: g5, | ||
| gainNode6: g6, | ||
| }; | ||
| }, []); | ||
|
|
||
| const [audioBuffer, setAudioBuffer] = useState<AudioBuffer | null>(null); | ||
|
|
||
| const sourceNodeRef = useRef<AudioBufferSourceNode | null>(null); | ||
|
|
||
| useEffect(() => { | ||
| const fetchAndDecodeAudio = async () => { | ||
| setIsLoading(true); | ||
| try { | ||
| const response = await fetch(AUDIO_URL); | ||
| const arrayBuffer = await response.arrayBuffer(); | ||
| const buffer = await context.decodeAudioData(arrayBuffer); | ||
| setAudioBuffer(buffer); | ||
| } catch (error) { | ||
| console.error('Failed to fetch or decode audio:', error); | ||
| Alert.alert( | ||
| 'Error', | ||
| 'Could not load the audio file. Check network and URL.' | ||
| ); | ||
| } finally { | ||
| setIsLoading(false); | ||
| } | ||
| }; | ||
|
|
||
| fetchAndDecodeAudio(); | ||
|
|
||
| return () => { | ||
| if (sourceNodeRef.current) { | ||
| sourceNodeRef.current.stop(0); | ||
| sourceNodeRef.current.disconnect(); | ||
| sourceNodeRef.current = null; | ||
| } | ||
| context.close(); | ||
| }; | ||
| }, [context]); | ||
|
|
||
| const handlePlayPause = () => { | ||
| if (isPlaying) { | ||
| if (sourceNodeRef.current) { | ||
| sourceNodeRef.current.stop(0); | ||
| sourceNodeRef.current.disconnect(); | ||
| sourceNodeRef.current = null; | ||
| } | ||
| setIsPlaying(false); | ||
| } else { | ||
| if (!audioBuffer) return; | ||
|
|
||
| const sourceNode = context.createBufferSource(); | ||
| sourceNode.buffer = audioBuffer; | ||
| sourceNode.loop = true; | ||
|
|
||
| sourceNode.connect(splitter); | ||
|
|
||
| sourceNode.start(0); | ||
| sourceNodeRef.current = sourceNode; | ||
| setIsPlaying(true); | ||
| } | ||
| }; | ||
|
|
||
| const handleGain1Change = (value: number) => { | ||
| setGain1(value); | ||
| gainNode1.gain.value = value; | ||
| }; | ||
| const handleGain2Change = (value: number) => { | ||
| setGain2(value); | ||
| gainNode2.gain.value = value; | ||
| }; | ||
| const handleGain3Change = (value: number) => { | ||
| setGain3(value); | ||
| gainNode3.gain.value = value; | ||
| }; | ||
| const handleGain4Change = (value: number) => { | ||
| setGain4(value); | ||
| gainNode4.gain.value = value; | ||
| }; | ||
| const handleGain5Change = (value: number) => { | ||
| setGain5(value); | ||
| gainNode5.gain.value = value; | ||
| }; | ||
| const handleGain6Change = (value: number) => { | ||
| setGain6(value); | ||
| gainNode6.gain.value = value; | ||
| }; | ||
|
|
||
| return ( | ||
| <Container centered> | ||
| {isLoading && <ActivityIndicator size="large" color="#FFFFFF" />} | ||
| <Button | ||
| onPress={handlePlayPause} | ||
| title={isPlaying ? 'Stop' : 'Play'} | ||
| disabled={isLoading || !audioBuffer} | ||
| /> | ||
| <Spacer.Vertical size={30} /> | ||
|
|
||
| <Slider | ||
| label="Gain Path 1" | ||
| value={gain1} | ||
| onValueChange={handleGain1Change} | ||
| min={0.0} | ||
| max={1.5} | ||
| step={0.01} | ||
| minLabelWidth={labelWidth} | ||
| /> | ||
| <Spacer.Vertical size={15} /> | ||
| <Slider | ||
| label="Gain Path 2" | ||
| value={gain2} | ||
| onValueChange={handleGain2Change} | ||
| min={0.0} | ||
| max={1.5} | ||
| step={0.01} | ||
| minLabelWidth={labelWidth} | ||
| /> | ||
| <Spacer.Vertical size={15} /> | ||
| <Slider | ||
| label="Gain Path 3" | ||
| value={gain3} | ||
| onValueChange={handleGain3Change} | ||
| min={0.0} | ||
| max={1.5} | ||
| step={0.01} | ||
| minLabelWidth={labelWidth} | ||
| /> | ||
| <Spacer.Vertical size={15} /> | ||
| <Slider | ||
| label="Gain Path 4" | ||
| value={gain4} | ||
| onValueChange={handleGain4Change} | ||
| min={0.0} | ||
| max={1.5} | ||
| step={0.01} | ||
| minLabelWidth={labelWidth} | ||
| /> | ||
| <Spacer.Vertical size={15} /> | ||
| <Slider | ||
| label="Gain Path 5" | ||
| value={gain5} | ||
| onValueChange={handleGain5Change} | ||
| min={0.0} | ||
| max={1.5} | ||
| step={0.01} | ||
| minLabelWidth={labelWidth} | ||
| /> | ||
| <Spacer.Vertical size={15} /> | ||
| <Slider | ||
| label="Gain Path 6" | ||
| value={gain6} | ||
| onValueChange={handleGain6Change} | ||
| min={0.0} | ||
| max={1.5} | ||
| step={0.01} | ||
| minLabelWidth={labelWidth} | ||
| /> | ||
| <Spacer.Vertical size={30} /> | ||
| </Container> | ||
| ); | ||
| }; | ||
|
|
||
| export default SplitterMerger; | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| export { default } from './MergerSplitter'; |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
possibly could be added to
audiodocs/static/audiowith informative description -> what is it, number of channels, SR