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components/experiments/tests/NoiseMusicGainPlayPause.vue
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components/experiments/tests/NoiseMusicGainPlayPause.vue
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<template>
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<h1>Test Version NoiseMusicGain: mit WebAudio & Gain und PlayPause, ohne Noise-Patch & ohne Music-Patch</h1>
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<h2>Play State: {{ playing }} </h2>
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<p>
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The method refreshAudioContext helps to get the ressources free when we stop playing the audio
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// without it would be louder each time we start playing
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</p>
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<p>
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Whenever I view this page the audio starts playing, when I hit 'space' it fades out within 2seconds
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when i start playing again nothing happens... I would expect playing.
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</p>
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<div v-if="createdNodes.musicGain">
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{{ musicGain }}
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</div>
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<div v-else>
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No MusicGain
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</div>
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<div v-if="createdNodes.noiseGain">
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{{ noiseGain }}
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</div>
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<div v-else>
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No noiseGain
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</div>
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<AudioElement
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ref="Noise"
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key="5"
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:src="noise_src"
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title="Noise"
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@update:volume="updateNoiseGain"
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@update:loaded="noiseReady=true"
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>
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<template #default="{}">
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<div class="icon">
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<img style="width: 25px" src="~/assets/image/noiseicon.svg">
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</div>
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</template>
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</AudioElement>
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<AudioElement
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ref="Music"
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key="1"
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:src="forest_src"
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title="Forest"
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@update:volume="updateMusicGain"
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@update:playing="handlePlayingUpdate"
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@update:fadeout="fadeOutGains"
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@update:loaded="musicReady=true"
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>
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<template #default="{ }">
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<div class="icon">
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<!-- tropic icon -->
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<img style="width: 25px" src="~/assets/image/musicicon.svg">
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</div>
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</template>
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<!-- Slot content for AudioElement, if needed -->
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</AudioElement>
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</template>
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<script lang="ts">
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import AudioElement from '../AudioElement2.vue'
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import { useAudioStore } from '../../../stores/audio'
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export default {
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name: 'NoiseMusicGain',
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components: { AudioElement },
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data () {
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return {
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audioContext: useAudioStore().getContext(),
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playing: false,
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paused: false,
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createdNodes: {} as any,
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fading: false,
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noiseReady: false,
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musicReady: false,
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musicGain: 0,
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noiseGain: 0,
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forest_src: window.location.origin + useRuntimeConfig().public.tracks.forest_src as string,
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noise_src: window.location.origin + useRuntimeConfig().public.noise_src as string
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}
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},
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mounted () {
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this.monitorGainNodes()
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},
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methods: {
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monitorGainNodes () {
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// This could be an interval or a direct method call in your gain changing methods
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setInterval(() => {
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if (this.createdNodes.musicGain) {
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this.musicGain = this.createdNodes.musicGain.gain.value
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}
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if (this.createdNodes.noiseGain) {
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this.noiseGain = this.createdNodes.noiseGain.gain.value
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}
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}, 100) // Update every 100 ms, adjust interval as necessary
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},
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// This method helps to get the ressources free when we stop playing the audio
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// without it would be louder each time we start playing
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refreshAudioContext () {
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const newAudioContext = new AudioContext()
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this.audioContext.close()
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useAudioStore().audioContext = newAudioContext
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this.audioContext = useAudioStore().getContext()
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},
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fadeOutGains () {
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// useNuxtApp().$logger.log('Fade OUT Gains')
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// Define the duration of the fade out
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const fadeDuration = 2.0 // 2 seconds for fade out
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const currentTime = this.audioContext.currentTime
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const fadeEndTime = currentTime + fadeDuration
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this.fading = true
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if (this.createdNodes.noiseGain) {
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// Cancel scheduled values to clear any previous scheduled changes
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this.createdNodes.noiseGain.gain.cancelScheduledValues(currentTime)
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// Set the current value
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this.createdNodes.noiseGain.gain.setValueAtTime(this.createdNodes.noiseGain.gain.value, currentTime)
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// Schedule the fade out
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this.createdNodes.noiseGain.gain.linearRampToValueAtTime(0, fadeEndTime)
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this.noiseGain = 0
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}
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if (this.createdNodes.musicGain) {
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// Cancel scheduled values to clear any previous scheduled changes
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this.createdNodes.musicGain.gain.cancelScheduledValues(currentTime)
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// Set the current value
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this.createdNodes.musicGain.gain.setValueAtTime(this.createdNodes.musicGain.gain.value, currentTime)
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// Schedule the fade out
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this.createdNodes.musicGain.gain.linearRampToValueAtTime(0, fadeEndTime)
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this.playing = false
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}
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setTimeout(() => {
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this.fading = false
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}, fadeDuration * 1000)
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},
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fadeInGains () {
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// useNuxtApp().$logger.log('Fade In Gains')
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const fadeTime = this.audioContext.currentTime + 6.0
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this.fading = true
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const noiseGain = this.createdNodes.noiseGain
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const musicGain = this.createdNodes.musicGain
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this.createdNodes.noiseSource.muted = false
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this.createdNodes.musicSource.muted = false
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noiseGain.gain.linearRampToValueAtTime(1.0, fadeTime)
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musicGain.gain.linearRampToValueAtTime(1.0, fadeTime)
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this.noiseGain = noiseGain.gain.value
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this.musicGain = musicGain.gain.value
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this.playing = true
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setTimeout(() => {
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this.fading = false
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}, fadeTime * 1000)
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},
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handlePlayingUpdate (state: boolean) {
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// useNuxtApp().$logger.log(`Audio Element is ${state ? 'Playing' : 'Not Playing'}`)
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if (!this.musicReady && !this.noiseReady) {
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// useNuxtApp().$logger.log('not yet ready' + this.musicReady + ' ready noise' + this.noiseReady)
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return
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}
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if (state && useAudioStore().isPlaying()) {
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// Everytime a AudioTag starts playing it is muted, because we want to control everything in web audio
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// Music has just started react on it.
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const noiseElement = this.$refs.Noise as typeof AudioElement
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const noiseAudioElement = noiseElement.$refs.audioElement as HTMLMediaElement
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const musicElement = this.$refs.Music as typeof AudioElement
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const musicAudioElement = musicElement.$refs.audioElement as HTMLMediaElement
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const audioContext = this.audioContext
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const destination = this.audioContext.destination
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this.createdNodes.musicGain ||= audioContext.createGain()
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this.createdNodes.noiseGain ||= audioContext.createGain()
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this.createdNodes.musicGain.gain.setValueAtTime(0, audioContext.currentTime)
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this.createdNodes.noiseGain.gain.setValueAtTime(0, audioContext.currentTime)
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musicAudioElement.muted = false
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noiseAudioElement.muted = false
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musicAudioElement.volume = 1.0
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noiseAudioElement.volume = 1.0
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this.createdNodes.noiseSource = audioContext.createMediaElementSource(noiseAudioElement)
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this.createdNodes.musicSource = audioContext.createMediaElementSource(musicAudioElement)
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this.createdNodes.noiseSource.connect(this.createdNodes.noiseGain)
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this.createdNodes.musicSource.connect(this.createdNodes.musicGain)
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this.createdNodes.noiseGain.connect(destination)
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this.createdNodes.musicGain.connect(destination)
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this.fadeInGains()
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} else {
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if (this.fading && this.createdNodes.noiseGain && this.createdNodes.musicGain) {
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this.createdNodes.noiseGain.gain.cancelScheduledValues(this.createdNodes.noiseGain.currentTime)
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this.createdNodes.musicGain.gain.cancelScheduledValues(this.createdNodes.musicGain.currentTime)
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}
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// Music has just stopped react on it.
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setTimeout(() => {
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this.playing = false
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this.createdNodes = []
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this.refreshAudioContext()
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}, 2000)
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}
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},
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updateNoiseGain (volume: number) {
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if (this.createdNodes.noiseGain) {
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this.createdNodes.noiseGain.gain.linearRampToValueAtTime(volume, this.createdNodes.noiseGain.context.currentTime + 0.30)
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this.noiseGain = this.createdNodes.noiseGain.gain.value
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}
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},
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updateMusicGain (volume: number) {
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if (this.createdNodes.musicGain) {
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this.createdNodes.musicGain.gain.linearRampToValueAtTime(volume, this.createdNodes.musicGain.context.currentTime + 0.30)
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this.musicGain = this.createdNodes.musicGain.gain.value
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}
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}
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}
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}
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</script>
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