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<script lang="ts">
import { onMount } from 'svelte';
import WaveformDisplay from './lib/components/WaveformDisplay.svelte';
import VUMeter from './lib/components/VUMeter.svelte';
import { TwoOpFM, type TwoOpFMParams } from './lib/audio/engines/TwoOpFM';
import { AudioService } from './lib/audio/services/AudioService';
import { downloadWAV } from './lib/audio/utils/WAVEncoder';
import { loadVolume, saveVolume, loadDuration, saveDuration } from './lib/utils/settings';
import { generateRandomColor } from './lib/utils/colors';
let currentMode = 'Mode 1';
const modes = ['Mode 1', 'Mode 2', 'Mode 3'];
const engine = new TwoOpFM();
const audioService = new AudioService();
let currentParams: TwoOpFMParams | null = null;
let currentBuffer: AudioBuffer | null = null;
let duration = loadDuration();
let volume = loadVolume();
let playbackPosition = 0;
let waveformColor = generateRandomColor();
onMount(() => {
audioService.setVolume(volume);
audioService.setPlaybackUpdateCallback((position) => {
playbackPosition = position;
});
generateRandom();
});
function generateRandom() {
currentParams = engine.randomParams();
waveformColor = generateRandomColor();
regenerateBuffer();
}
function mutate() {
if (!currentParams) {
generateRandom();
return;
}
currentParams = engine.mutateParams(currentParams);
waveformColor = generateRandomColor();
regenerateBuffer();
}
function regenerateBuffer() {
if (!currentParams) return;
const sampleRate = audioService.getSampleRate();
const data = engine.generate(currentParams, sampleRate, duration);
currentBuffer = audioService.createAudioBuffer(data);
audioService.play(currentBuffer);
}
function replaySound() {
if (currentBuffer) {
audioService.play(currentBuffer);
}
}
function download() {
if (!currentBuffer) return;
downloadWAV(currentBuffer, 'synth-sound.wav');
}
function handleVolumeChange(event: Event) {
const target = event.target as HTMLInputElement;
volume = parseFloat(target.value);
audioService.setVolume(volume);
saveVolume(volume);
}
function handleDurationChange(event: Event) {
const target = event.target as HTMLInputElement;
duration = parseFloat(target.value);
saveDuration(duration);
}
</script>
<div class="container">
<div class="top-bar">
<div class="mode-buttons">
{#each modes as mode}
<button
class:active={currentMode === mode}
onclick={() => currentMode = mode}
>
{mode}
</button>
{/each}
</div>
<div class="controls-group">
<div class="slider-control duration-slider">
<label for="duration">Duration: {duration.toFixed(2)}s</label>
<input
id="duration"
type="range"
min="0.05"
max="8"
step="0.01"
value={duration}
oninput={handleDurationChange}
/>
</div>
<div class="slider-control">
<label for="volume">Volume</label>
<input
id="volume"
type="range"
min="0"
max="1"
step="0.01"
value={volume}
oninput={handleVolumeChange}
/>
</div>
</div>
</div>
<div class="main-area">
<div class="waveform-container">
<WaveformDisplay
buffer={currentBuffer}
color={waveformColor}
playbackPosition={playbackPosition}
onclick={replaySound}
/>
<div class="bottom-controls">
<button onclick={generateRandom}>Random</button>
<button onclick={mutate}>Mutate</button>
<button onclick={download}>Download</button>
</div>
</div>
<div class="vu-meter-container">
<VUMeter
buffer={currentBuffer}
playbackPosition={playbackPosition}
/>
</div>
</div>
</div>
<style>
.container {
width: 100%;
height: 100%;
display: flex;
flex-direction: column;
}
.top-bar {
display: flex;
justify-content: space-between;
align-items: center;
gap: 1rem;
padding: 0.5rem;
background-color: #1a1a1a;
border-bottom: 1px solid #333;
}
.mode-buttons {
display: flex;
gap: 0.5rem;
}
.mode-buttons button {
opacity: 0.7;
}
.mode-buttons button.active {
opacity: 1;
border-color: #646cff;
}
.controls-group {
display: flex;
gap: 1rem;
align-items: center;
}
.slider-control {
display: flex;
align-items: center;
gap: 0.5rem;
}
.slider-control label {
font-size: 0.9rem;
white-space: nowrap;
}
.slider-control input[type="range"] {
width: 100px;
}
.duration-slider input[type="range"] {
width: 300px;
}
.main-area {
flex: 1;
display: flex;
background-color: #0a0a0a;
overflow: hidden;
}
.waveform-container {
flex: 1;
position: relative;
display: flex;
align-items: center;
justify-content: center;
overflow: hidden;
}
.vu-meter-container {
width: 5%;
min-width: 40px;
max-width: 80px;
border-left: 1px solid #333;
}
.bottom-controls {
position: absolute;
bottom: 2rem;
left: 50%;
transform: translateX(-50%);
display: flex;
gap: 1rem;
}
input[type="range"] {
cursor: pointer;
-webkit-appearance: none;
appearance: none;
background: transparent;
height: 20px;
border-radius: 0;
}
input[type="range"]::-webkit-slider-track {
background: #333;
height: 4px;
border: 1px solid #444;
border-radius: 0;
}
input[type="range"]::-webkit-slider-thumb {
-webkit-appearance: none;
appearance: none;
width: 16px;
height: 16px;
background: #fff;
border: 1px solid #000;
border-radius: 0;
cursor: pointer;
margin-top: -6px;
}
input[type="range"]::-webkit-slider-thumb:hover {
background: #ddd;
}
input[type="range"]::-moz-range-track {
background: #333;
height: 4px;
border: 1px solid #444;
border-radius: 0;
}
input[type="range"]::-moz-range-thumb {
width: 16px;
height: 16px;
background: #fff;
border: 1px solid #000;
border-radius: 0;
cursor: pointer;
}
input[type="range"]::-moz-range-thumb:hover {
background: #ddd;
}
</style>