audio.libx.js
Version:
Comprehensive audio library with progressive streaming, recording capabilities, real-time processing, and intelligent caching for web applications
1,177 lines (1,030 loc) • 123 kB
HTML
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>audio.libx.js - Comprehensive Demo</title>
<style>
:root {
--primary-color: #007cba;
--primary-dark: #005a8b;
--secondary-color: #28a745;
--danger-color: #dc3545;
--warning-color: #ffc107;
--info-color: #17a2b8;
--light-bg: #f8f9fa;
--dark-bg: #343a40;
--border-color: #dee2e6;
--text-color: #212529;
--text-muted: #6c757d;
--shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
--radius: 8px;
--transition: all 0.3s ease;
}
* {
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
line-height: 1.6;
color: var(--text-color);
margin: 0;
padding: 0;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
}
.header {
background: rgba(255, 255, 255, 0.95);
backdrop-filter: blur(10px);
padding: 1rem 0;
box-shadow: var(--shadow);
position: sticky;
top: 0;
z-index: 100;
}
.header-content {
max-width: 1200px;
margin: 0 auto;
padding: 0 1rem;
display: flex;
justify-content: space-between;
align-items: center;
}
.logo {
font-size: 1.5rem;
font-weight: bold;
color: var(--primary-color);
}
.version {
background: var(--primary-color);
color: white;
padding: 0.25rem 0.5rem;
border-radius: 12px;
font-size: 0.75rem;
font-weight: 500;
}
.main-container {
max-width: 1200px;
margin: 2rem auto;
padding: 0 1rem;
}
.tabs {
display: flex;
background: rgba(255, 255, 255, 0.9);
border-radius: var(--radius) var(--radius) 0 0;
overflow: hidden;
box-shadow: var(--shadow);
flex-wrap: wrap;
}
.tab {
flex: 1;
min-width: 120px;
padding: 1rem;
background: transparent;
border: none;
cursor: pointer;
font-weight: 500;
color: var(--text-muted);
transition: var(--transition);
border-bottom: 3px solid transparent;
}
.tab:hover {
background: rgba(0, 124, 186, 0.1);
color: var(--primary-color);
}
.tab.active {
color: var(--primary-color);
background: rgba(0, 124, 186, 0.1);
border-bottom-color: var(--primary-color);
}
.tab-content {
background: rgba(255, 255, 255, 0.95);
backdrop-filter: blur(10px);
border-radius: 0 0 var(--radius) var(--radius);
box-shadow: var(--shadow);
min-height: 600px;
}
.tab-pane {
display: none;
padding: 2rem;
animation: fadeIn 0.3s ease;
}
.tab-pane.active {
display: block;
}
@keyframes fadeIn {
from {
opacity: 0;
transform: translateY(10px);
}
to {
opacity: 1;
transform: translateY(0);
}
}
.section {
margin-bottom: 2rem;
padding: 1.5rem;
background: white;
border-radius: var(--radius);
box-shadow: var(--shadow);
}
.section-title {
margin: 0 0 1rem 0;
color: var(--primary-color);
font-size: 1.25rem;
font-weight: 600;
display: flex;
align-items: center;
gap: 0.5rem;
}
.section-description {
color: var(--text-muted);
margin-bottom: 1.5rem;
font-size: 0.9rem;
}
.controls {
display: flex;
gap: 0.75rem;
flex-wrap: wrap;
align-items: center;
margin: 1rem 0;
}
.btn {
padding: 0.5rem 1rem;
border: none;
border-radius: 6px;
cursor: pointer;
font-weight: 500;
font-size: 0.875rem;
transition: var(--transition);
display: inline-flex;
align-items: center;
gap: 0.5rem;
text-decoration: none;
}
.btn-primary {
background: var(--primary-color);
color: white;
}
.btn-primary:hover:not(:disabled) {
background: var(--primary-dark);
transform: translateY(-1px);
}
.btn-secondary {
background: var(--text-muted);
color: white;
}
.btn-success {
background: var(--secondary-color);
color: white;
}
.btn-danger {
background: var(--danger-color);
color: white;
}
.btn-warning {
background: var(--warning-color);
color: var(--text-color);
}
.btn:disabled {
opacity: 0.6;
cursor: not-allowed;
transform: none !important;
}
.btn.recording {
animation: pulse 1.5s infinite;
}
@keyframes pulse {
0%,
100% {
opacity: 1;
}
50% {
opacity: 0.7;
}
}
.form-control {
padding: 0.5rem 0.75rem;
border: 1px solid var(--border-color);
border-radius: 6px;
font-size: 0.875rem;
transition: var(--transition);
flex: 1;
min-width: 200px;
}
.form-control:focus {
outline: none;
border-color: var(--primary-color);
box-shadow: 0 0 0 2px rgba(0, 124, 186, 0.2);
}
.progress-container {
margin: 1rem 0;
}
.progress {
width: 100%;
height: 8px;
background: var(--light-bg);
border-radius: 4px;
overflow: hidden;
}
.progress-bar {
height: 100%;
background: linear-gradient(90deg, var(--primary-color), var(--info-color));
width: 0%;
transition: width 0.3s ease;
border-radius: 4px;
}
.level-meter {
width: 200px;
height: 20px;
background: var(--light-bg);
border-radius: 10px;
overflow: hidden;
position: relative;
}
.level-bar {
height: 100%;
background: linear-gradient(to right, #28a745, #ffc107, #dc3545);
width: 0%;
transition: width 0.1s ease;
}
.status {
padding: 0.75rem 1rem;
border-radius: 6px;
margin: 1rem 0;
border-left: 4px solid var(--info-color);
background: rgba(23, 162, 184, 0.1);
font-size: 0.875rem;
}
.status.error {
background: rgba(220, 53, 69, 0.1);
border-left-color: var(--danger-color);
color: var(--danger-color);
}
.status.success {
background: rgba(40, 167, 69, 0.1);
border-left-color: var(--secondary-color);
color: var(--secondary-color);
}
.stats-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
gap: 1rem;
margin: 1rem 0;
}
.stat-card {
background: var(--light-bg);
padding: 1rem;
border-radius: 6px;
text-align: center;
border: 1px solid var(--border-color);
}
.stat-value {
font-size: 1.5rem;
font-weight: bold;
color: var(--primary-color);
display: block;
}
.stat-label {
font-size: 0.75rem;
color: var(--text-muted);
text-transform: uppercase;
letter-spacing: 0.5px;
}
.log {
background: #1e1e1e;
color: #f8f8f2;
border-radius: 6px;
padding: 1rem;
max-height: 300px;
overflow-y: auto;
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
font-size: 0.8rem;
line-height: 1.4;
}
.log-entry {
margin-bottom: 0.25rem;
}
.log-timestamp {
color: #6c757d;
}
.log-message {
color: #f8f8f2;
}
.log-data {
color: #50fa7b;
font-style: italic;
}
.config-section {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 1rem;
margin: 1rem 0;
}
.config-item {
display: flex;
flex-direction: column;
gap: 0.5rem;
}
.config-item label {
font-weight: 500;
font-size: 0.875rem;
color: var(--text-color);
}
.checkbox-item {
display: flex;
align-items: center;
gap: 0.5rem;
}
.checkbox-item input[type='checkbox'] {
margin: 0;
}
.visualizer {
width: 100%;
height: 120px;
background: #000;
border-radius: 6px;
margin: 1rem 0;
}
.audio-element {
width: 100%;
margin: 1rem 0;
}
.recordings-list {
max-height: 400px;
overflow-y: auto;
}
.recording-item {
background: var(--light-bg);
padding: 1rem;
margin: 0.5rem 0;
border-radius: 6px;
border: 1px solid var(--border-color);
display: flex;
justify-content: space-between;
align-items: center;
gap: 1rem;
}
.recording-info {
flex: 1;
}
.recording-title {
font-weight: 600;
margin-bottom: 0.25rem;
}
.recording-meta {
font-size: 0.8rem;
color: var(--text-muted);
}
.recording-actions {
display: flex;
gap: 0.5rem;
}
.duration-display {
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
font-size: 1.25rem;
font-weight: bold;
color: var(--primary-color);
padding: 0.5rem 1rem;
background: var(--light-bg);
border-radius: 6px;
border: 1px solid var(--border-color);
}
.processing-controls {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 1rem;
margin: 1rem 0;
}
.processing-section {
background: var(--light-bg);
padding: 1rem;
border-radius: 6px;
border: 1px solid var(--border-color);
}
.processing-title {
font-weight: 600;
margin-bottom: 0.5rem;
color: var(--primary-color);
}
.range-input {
width: 100%;
margin: 0.5rem 0;
}
.range-value {
font-weight: 500;
color: var(--primary-color);
}
.feature-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 1.5rem;
margin: 1rem 0;
}
.feature-card {
background: white;
padding: 1.5rem;
border-radius: var(--radius);
box-shadow: var(--shadow);
border: 1px solid var(--border-color);
}
.feature-icon {
font-size: 2rem;
margin-bottom: 0.5rem;
}
.feature-title {
font-weight: 600;
margin-bottom: 0.5rem;
color: var(--primary-color);
}
.feature-description {
font-size: 0.875rem;
color: var(--text-muted);
line-height: 1.5;
}
.quick-examples {
display: flex;
gap: 0.5rem;
flex-wrap: wrap;
margin: 0.5rem 0;
}
.quick-example {
padding: 0.25rem 0.5rem;
background: var(--light-bg);
border: 1px solid var(--border-color);
border-radius: 4px;
font-size: 0.75rem;
cursor: pointer;
transition: var(--transition);
}
.quick-example:hover {
background: var(--primary-color);
color: white;
}
@media (max-width: 768px) {
.tabs {
flex-direction: column;
}
.tab {
flex: none;
text-align: left;
}
.controls {
flex-direction: column;
align-items: stretch;
}
.controls .btn {
justify-content: center;
}
.config-section {
grid-template-columns: 1fr;
}
.stats-grid {
grid-template-columns: repeat(2, 1fr);
}
.recording-item {
flex-direction: column;
align-items: stretch;
gap: 0.5rem;
}
.recording-actions {
justify-content: center;
}
}
.loading {
display: inline-block;
width: 12px;
height: 12px;
border: 2px solid rgba(255, 255, 255, 0.3);
border-radius: 50%;
border-top-color: white;
animation: spin 0.8s ease-in-out infinite;
}
@keyframes spin {
to {
transform: rotate(360deg);
}
}
.tooltip {
position: relative;
cursor: help;
}
.tooltip:hover::after {
content: attr(data-tooltip);
position: absolute;
bottom: 100%;
left: 50%;
transform: translateX(-50%);
background: var(--dark-bg);
color: white;
padding: 0.5rem;
border-radius: 4px;
font-size: 0.75rem;
white-space: nowrap;
z-index: 1000;
}
.empty-state {
text-align: center;
padding: 2rem;
color: var(--text-muted);
font-style: italic;
}
.empty-state-icon {
font-size: 3rem;
opacity: 0.5;
margin-bottom: 1rem;
}
</style>
</head>
<body>
<header class="header">
<div class="header-content">
<div class="logo">🎵 audio.libx.js</div>
<div class="version">v0.2.0</div>
</div>
</header>
<main class="main-container">
<div class="tabs">
<button class="tab active" data-tab="overview">📖 Overview</button>
<button class="tab" data-tab="streaming">🎵 Streaming</button>
<button class="tab" data-tab="recording">🎤 Recording</button>
<button class="tab" data-tab="processing">⚙️ Processing</button>
<button class="tab" data-tab="caching">💾 Caching</button>
<button class="tab" data-tab="realtime">📊 Real-time</button>
<button class="tab" data-tab="permissions">🔒 Permissions</button>
</div>
<div class="tab-content">
<!-- Overview Tab -->
<div id="overview" class="tab-pane active">
<div class="section">
<h2 class="section-title">🎵 Welcome to audio.libx.js</h2>
<p class="section-description">
A comprehensive progressive audio streaming library with real-time processing, recording, and caching capabilities. Explore all
features using the tabs above.
</p>
<div class="feature-grid">
<div class="feature-card">
<div class="feature-icon">🎵</div>
<div class="feature-title">Progressive Streaming</div>
<div class="feature-description">
Stream audio with MediaSource Extensions, intelligent buffering, and cross-platform compatibility including iOS
ManagedMediaSource support.
</div>
</div>
<div class="feature-card">
<div class="feature-icon">🎤</div>
<div class="feature-title">Audio Recording</div>
<div class="feature-description">
High-quality audio recording with real-time processing, permission management, and configurable quality settings.
</div>
</div>
<div class="feature-card">
<div class="feature-icon">⚙️</div>
<div class="feature-title">Audio Processing</div>
<div class="feature-description">
Advanced audio processing including silence trimming, format conversion, and audio buffer manipulation.
</div>
</div>
<div class="feature-card">
<div class="feature-icon">💾</div>
<div class="feature-title">Intelligent Caching</div>
<div class="feature-description">
Persistent IndexedDB storage with memory caching, statistics tracking, and automatic cleanup management.
</div>
</div>
<div class="feature-card">
<div class="feature-icon">📊</div>
<div class="feature-title">Real-time Processing</div>
<div class="feature-description">
Live audio analysis with effects, silence detection, level monitoring, and visual feedback.
</div>
</div>
<div class="feature-card">
<div class="feature-icon">🔒</div>
<div class="feature-title">Permission Management</div>
<div class="feature-description">
Cross-browser permission handling with user-friendly error messages and device enumeration.
</div>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">🚀 Quick Start</h3>
<p class="section-description">Get started with audio.libx.js in just a few lines of code:</p>
<div class="log">
<pre><code>// Import the library
import { createAudioStreamer, createAudioRecorder } from 'audio.libx.js';
// Create audio streamer
const audioElement = document.getElementById('audio');
const streamer = createAudioStreamer(audioElement, {
enableCaching: true,
enableTrimming: true,
bufferThreshold: 5
});
// Stream audio
const result = await streamer.streamFromUrl('path/to/audio.mp3');
await result.onLoaded;
// Create audio recorder
const recorder = createAudioRecorder({
enableRealtimeProcessing: true,
audioBitsPerSecond: 128000
});
// Start recording
const recording = await recorder.startRecording();
await recording.onStarted;</code></pre>
</div>
</div>
<div class="section">
<h3 class="section-title">🌐 Browser Compatibility</h3>
<div class="stats-grid">
<div class="stat-card">
<span class="stat-value">✅</span>
<span class="stat-label">Chrome</span>
</div>
<div class="stat-card">
<span class="stat-value">✅</span>
<span class="stat-label">Firefox</span>
</div>
<div class="stat-card">
<span class="stat-value">✅</span>
<span class="stat-label">Safari 17.1+</span>
</div>
<div class="stat-card">
<span class="stat-value">✅</span>
<span class="stat-label">Edge</span>
</div>
</div>
</div>
</div>
<!-- Streaming Tab -->
<div id="streaming" class="tab-pane">
<div class="section">
<h2 class="section-title">🎵 Progressive Audio Streaming</h2>
<p class="section-description">Stream audio with progressive loading, intelligent buffering, and persistent caching.</p>
<audio id="audioPlayer" class="audio-element" controls>Your browser does not support the audio element.</audio>
<div class="controls">
<input type="url" id="audioUrl" class="form-control" placeholder="Enter audio URL (MP3, WAV, etc.)" value="./files/Jazz.wav" />
<button id="streamBtn" class="btn btn-primary">🎵 Stream Audio</button>
<button id="playFromCacheBtn" class="btn btn-secondary" disabled>💾 Play from Cache</button>
<button id="clearCacheBtn" class="btn btn-warning">🗑️ Clear Cache</button>
</div>
<div class="quick-examples">
<span>Quick Examples:</span>
<button class="quick-example" onclick="document.getElementById('audioUrl').value='./files/Jazz.wav'">WAV File</button>
<button class="quick-example" onclick="document.getElementById('audioUrl').value='./files/Sorry.mp3'">MP3 File</button>
</div>
<div class="progress-container">
<div class="progress">
<div class="progress-bar" id="bufferProgress"></div>
</div>
<small class="text-muted">Buffer Progress</small>
</div>
<div id="streamingStatus" class="status">Ready to stream audio...</div>
</div>
<div class="section">
<h3 class="section-title">📊 Streaming Statistics</h3>
<div class="stats-grid">
<div class="stat-card">
<span class="stat-value" id="cacheEntries">0</span>
<span class="stat-label">Cache Entries</span>
</div>
<div class="stat-card">
<span class="stat-value" id="cacheSize">0 MB</span>
<span class="stat-label">Cache Size</span>
</div>
<div class="stat-card">
<span class="stat-value" id="hitRatio">0%</span>
<span class="stat-label">Cache Hit Ratio</span>
</div>
<div class="stat-card">
<span class="stat-value" id="streamState">idle</span>
<span class="stat-label">Stream State</span>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">⚙️ Configuration</h3>
<div class="config-section">
<div class="config-item checkbox-item">
<input type="checkbox" id="enableCaching" checked />
<label for="enableCaching">Enable Caching</label>
</div>
<div class="config-item checkbox-item">
<input type="checkbox" id="enableTrimming" checked />
<label for="enableTrimming">Enable Silence Trimming</label>
</div>
<div class="config-item">
<label for="bufferThreshold">Buffer Threshold: <span id="bufferThresholdValue" class="range-value">5</span>s</label>
<input type="range" id="bufferThreshold" class="range-input" min="1" max="10" value="5" />
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">📋 Event Log</h3>
<div id="streamingEventLog" class="log"></div>
<button id="clearStreamingLogBtn" class="btn btn-secondary">Clear Log</button>
</div>
</div>
<!-- Recording Tab -->
<div id="recording" class="tab-pane">
<div class="section">
<h2 class="section-title">🎤 Audio Recording</h2>
<p class="section-description">Record high-quality audio with real-time processing, level monitoring, and visual feedback.</p>
<div class="controls">
<button id="startRecordingBtn" class="btn btn-primary">🎤 Start Recording</button>
<button id="stopRecordingBtn" class="btn btn-danger" disabled>⏹️ Stop</button>
<button id="pauseRecordingBtn" class="btn btn-warning" disabled>⏸️ Pause</button>
<button id="resumeRecordingBtn" class="btn btn-success" disabled>▶️ Resume</button>
<button id="testPermissionBtn" class="btn btn-secondary">🔒 Test Permission</button>
</div>
<div class="controls">
<div class="duration-display" id="recordingDuration">00:00</div>
<div class="level-meter">
<div class="level-bar" id="recordingLevelBar"></div>
</div>
</div>
<canvas id="recordingVisualizer" class="visualizer" width="800" height="120"></canvas>
<div id="recordingStatus" class="status">Ready to record...</div>
</div>
<div class="section">
<h3 class="section-title">⚙️ Recording Configuration</h3>
<div class="config-section">
<div class="config-item">
<label for="recordingMimeType">MIME Type:</label>
<select id="recordingMimeType" class="form-control">
<option value="">Auto-detect</option>
<option value="audio/webm;codecs=opus">WebM Opus</option>
<option value="audio/webm">WebM</option>
<option value="audio/mp4">MP4</option>
<option value="audio/wav">WAV</option>
</select>
</div>
<div class="config-item">
<label for="recordingBitrate">Bitrate (kbps):</label>
<input type="number" id="recordingBitrate" class="form-control" value="128" min="64" max="320" step="32" />
</div>
<div class="config-item">
<label for="recordingMaxDuration">Max Duration (sec):</label>
<input type="number" id="recordingMaxDuration" class="form-control" value="300" min="10" max="3600" step="10" />
</div>
</div>
<div class="config-section">
<div class="config-item checkbox-item">
<input type="checkbox" id="recordingEchoCancellation" checked />
<label for="recordingEchoCancellation">Echo Cancellation</label>
</div>
<div class="config-item checkbox-item">
<input type="checkbox" id="recordingNoiseSuppression" checked />
<label for="recordingNoiseSuppression">Noise Suppression</label>
</div>
<div class="config-item checkbox-item">
<input type="checkbox" id="recordingAutoGainControl" checked />
<label for="recordingAutoGainControl">Auto Gain Control</label>
</div>
<div class="config-item checkbox-item">
<input type="checkbox" id="recordingRealtimeProcessing" checked />
<label for="recordingRealtimeProcessing">Real-time Processing</label>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">🎵 Recordings</h3>
<div id="recordingsList" class="recordings-list">
<div class="empty-state">
<div class="empty-state-icon">🎤</div>
<p>No recordings yet. Start recording to see them here.</p>
</div>
</div>
<button id="clearRecordingsBtn" class="btn btn-warning">Clear All Recordings</button>
</div>
<div class="section">
<h3 class="section-title">📋 Recording Event Log</h3>
<div id="recordingEventLog" class="log"></div>
<button id="clearRecordingLogBtn" class="btn btn-secondary">Clear Log</button>
</div>
</div>
<!-- Processing Tab -->
<div id="processing" class="tab-pane">
<div class="section">
<h2 class="section-title">⚙️ Audio Processing</h2>
<p class="section-description">Process audio with silence trimming, format conversion, and advanced audio manipulation.</p>
<div class="processing-controls">
<div class="processing-section">
<div class="processing-title">🔇 Silence Trimming</div>
<div class="config-item">
<label for="silenceThreshold">Silence Threshold: <span id="silenceThresholdValue" class="range-value">-50</span> dB</label>
<input type="range" id="silenceThreshold" class="range-input" min="-80" max="-10" value="-50" />
</div>
<div class="config-item">
<label for="minSilenceDuration">Min Silence: <span id="minSilenceDurationValue" class="range-value">100</span> ms</label>
<input type="range" id="minSilenceDuration" class="range-input" min="50" max="500" value="100" />
</div>
<button id="trimSilenceBtn" class="btn btn-primary">Trim Silence</button>
</div>
<div class="processing-section">
<div class="processing-title">🔄 Format Conversion</div>
<div class="config-item">
<label for="outputFormat">Output Format:</label>
<select id="outputFormat" class="form-control">
<option value="wav">WAV</option>
<option value="mp3">MP3</option>
<option value="webm">WebM</option>
</select>
</div>
<button id="convertFormatBtn" class="btn btn-primary">Convert Format</button>
</div>
<div class="processing-section">
<div class="processing-title">🏷️ Metadata Processing</div>
<div class="checkbox-item">
<input type="checkbox" id="removeId3Tags" checked />
<label for="removeId3Tags">Remove ID3 Tags</label>
</div>
<button id="processMetadataBtn" class="btn btn-primary">Process Metadata</button>
</div>
<div class="processing-section">
<div class="processing-title">⏱️ Duration Analysis</div>
<button id="estimateDurationBtn" class="btn btn-primary">Estimate Duration</button>
<div id="durationResult" class="status" style="display: none"></div>
</div>
</div>
<div class="controls">
<input type="file" id="audioFileInput" class="form-control" accept="audio/*" />
<button id="loadAudioFileBtn" class="btn btn-secondary">Load Audio File</button>
<button id="downloadProcessedBtn" class="btn btn-success" disabled>💾 Download Processed</button>
</div>
<div id="processingStatus" class="status">Select an audio file to start processing...</div>
</div>
<div class="section">
<h3 class="section-title">📊 Processing Results</h3>
<div class="stats-grid">
<div class="stat-card">
<span class="stat-value" id="originalSize">0 MB</span>
<span class="stat-label">Original Size</span>
</div>
<div class="stat-card">
<span class="stat-value" id="processedSize">0 MB</span>
<span class="stat-label">Processed Size</span>
</div>
<div class="stat-card">
<span class="stat-value" id="compressionRatio">0%</span>
<span class="stat-label">Size Reduction</span>
</div>
<div class="stat-card">
<span class="stat-value" id="processingTime">0ms</span>
<span class="stat-label">Processing Time</span>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">📋 Processing Event Log</h3>
<div id="processingEventLog" class="log"></div>
<button id="clearProcessingLogBtn" class="btn btn-secondary">Clear Log</button>
</div>
</div>
<!-- Caching Tab -->
<div id="caching" class="tab-pane">
<div class="section">
<h2 class="section-title">💾 Audio Caching System</h2>
<p class="section-description">Manage persistent audio cache with IndexedDB storage and memory optimization.</p>
<div class="controls">
<button id="refreshCacheStatsBtn" class="btn btn-primary">🔄 Refresh Stats</button>
<button id="clearAllCacheBtn" class="btn btn-warning">🗑️ Clear All Cache</button>
<button id="exportCacheBtn" class="btn btn-secondary">📤 Export Cache Data</button>
<button id="optimizeCacheBtn" class="btn btn-success">⚡ Optimize Cache</button>
</div>
<div id="cachingStatus" class="status">Cache system ready...</div>
</div>
<div class="section">
<h3 class="section-title">📊 Cache Statistics</h3>
<div class="stats-grid">
<div class="stat-card">
<span class="stat-value" id="totalCacheEntries">0</span>
<span class="stat-label">Total Entries</span>
</div>
<div class="stat-card">
<span class="stat-value" id="totalCacheSize">0 MB</span>
<span class="stat-label">Total Size</span>
</div>
<div class="stat-card">
<span class="stat-value" id="cacheHitRatio">0%</span>
<span class="stat-label">Hit Ratio</span>
</div>
<div class="stat-card">
<span class="stat-value" id="memoryUsage">0 MB</span>
<span class="stat-label">Memory Usage</span>
</div>
<div class="stat-card">
<span class="stat-value" id="storageQuota">0 MB</span>
<span class="stat-label">Storage Quota</span>
</div>
<div class="stat-card">
<span class="stat-value" id="lastCleanup">Never</span>
<span class="stat-label">Last Cleanup</span>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">🗂️ Cache Entries</h3>
<div id="cacheEntriesList" class="recordings-list">
<div class="empty-state">
<div class="empty-state-icon">💾</div>
<p>No cache entries found. Stream some audio to populate the cache.</p>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">⚙️ Cache Configuration</h3>
<div class="config-section">
<div class="config-item">
<label for="maxCacheSize">Max Cache Size: <span id="maxCacheSizeValue" class="range-value">100</span> MB</label>
<input type="range" id="maxCacheSize" class="range-input" min="10" max="500" value="100" />
</div>
<div class="config-item">
<label for="maxCacheAge">Max Age: <span id="maxCacheAgeValue" class="range-value">7</span> days</label>
<input type="range" id="maxCacheAge" class="range-input" min="1" max="30" value="7" />
</div>
<div class="config-item checkbox-item">
<input type="checkbox" id="enableMemoryCache" checked />
<label for="enableMemoryCache">Enable Memory Cache</label>
</div>
<div class="config-item checkbox-item">
<input type="checkbox" id="enableAutoCleanup" checked />
<label for="enableAutoCleanup">Enable Auto Cleanup</label>
</div>
</div>
</div>
<div class="section">
<h3 class="section-title">📋 Cache Event Log</h3>
<div id="cachingEventLog" class="log"></div>
<button id="clearCachingLogBtn" class="btn btn-secondary">Clear Log</button>
</div>
</div>
<!-- Real-time Tab -->
<div id="realtime" class="tab-pane">
<div class="section">
<h2 class="section-title">📊 Real-time Audio Processing</h2>
<p class="section-description">Live audio analysis with effects, visualization, and real-time processing capabilities.</p>
<div class="controls">
<button id="startRealtimeBtn" class="btn btn-primary">🎤 Start Real-time Processing</button>
<button id="stopRealtimeBtn" class="btn btn-danger" disabled>⏹️ Stop Processing</button>
<button id="toggleEffectsBtn" class="btn btn-secondary" disabled>✨ Toggle Effects</button>
<button id="toggleMuteBtn" class="btn btn-warning" disabled>🔇 Mute Output</button>
</div>
<canvas id="realtimeVisualizer" class="visualizer" width="800" height="120"></canvas>
<div class="controls">
<div class="level-meter">
<div class="level-bar" id="realtimeLevelBar"></div>
</div>
<div id="silenceIndicator" class="status">🔇 Silence</div>
</div>
<div id="realtimeStatus" class="status">Real-time processing ready...</div>
</div>
<div class="section">
<h3 class="section-title">🎛️ Audio Effects</h3>
<div class="processing-controls">
<div class="processing-section">
<div class="processing-title">🔊 Gain Control</div>
<div class="config-item">
<label for="gainLevel">Gain: <span id="gainLevelValue" class="range-value">1.0</span>x</label>
<input type="range" id="gainLevel" class="range-input" min="0" max="3" step="0.1" value="1" />
</div>
</div>
<div class="processing-section">
<div class="processing-title">🎚️ Filter</div>
<div class="config-item">
<label for="filterType">Type:</label>
<select id="filterType" class="form-control">
<option value="none">None</option>
<option value="lowpass">Low Pass</option>
<option value="highpass">High Pass</option>
<option value="bandpass">Band Pass</option>
</select>
</div>
<div class="config-item">
<label for="filterFrequency">Frequency: <span id="filterFrequencyValue" class="range-value">1000</span> Hz</label>
<input type="range" id="filterFrequency" class="range-input" min="100" max="5000" value="1000" />
</div>
</div>
<div class="processing-section">
<div class="processing-title">🌊 Reverb</div>
<div class="config-item">
<label for="reverbLevel">Level: <span id="reverbLevelValue" class="range-value">0</span>%</label>
<input type="range" id="reverbLevel" class="range-input" min="0" max="100" value="0" />
</div>
</div>
<div class="processing-section">
<div class="processing-title">🔄 Echo</div>
<div class="config-item">
<label for="echoDelay">Delay: <span id="echoDelayValue" class="range-value">0</span> ms</label>
<input type="range" id="echoDelay" class="range-input" min="0" max="500" value="0" />
</div>
<div class="config-item">
<label for="echoFeedback">Feedback: <span id="echoFeedbackValue" class="range-value">0</span>%</label>
<input type="range" id="echoFeedback" class="range-input" min="0" max="90" value="0" />
</div>
</div>
</div>
</div>
<div class="section">
<