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984 lines (842 loc) · 40.4 KB
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>NSF Player - 专业音频播放器</title>
<script src="https://cdn.tailwindcss.com"></script>
<style>
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
body {
font-family: 'Inter', sans-serif;
background: linear-gradient(135deg, #0f0f23 0%, #1a1a3a 50%, #0f0f23 100%);
color: #e2e8f0;
min-height: 100vh;
overflow-x: hidden;
}
.glass-effect {
background: rgba(255, 255, 255, 0.05);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.1);
}
.gradient-border {
position: relative;
background: linear-gradient(145deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
border: 1px solid transparent;
}
.gradient-border::before {
content: '';
position: absolute;
inset: 0;
padding: 1px;
background: linear-gradient(145deg, #6366f1, #a855f7);
border-radius: inherit;
mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
mask-composite: exclude;
}
.floating-element {
animation: float 6s ease-in-out infinite;
}
@keyframes float {
0%, 100% { transform: translateY(0px); }
50% { transform: translateY(-10px); }
}
.pulse-glow {
animation: pulse-glow 2s ease-in-out infinite alternate;
}
@keyframes pulse-glow {
from { box-shadow: 0 0 20px rgba(99, 102, 241, 0.3); }
to { box-shadow: 0 0 40px rgba(99, 102, 241, 0.6); }
}
.btn {
display: inline-flex;
align-items: center;
justify-content: center;
border-radius: 12px;
font-weight: 500;
transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
cursor: pointer;
border: none;
outline: none;
}
.btn-primary {
background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
color: white;
padding: 12px 24px;
}
.btn-primary:hover {
transform: translateY(-2px);
box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
}
.btn-icon {
display: flex;
align-items: center;
justify-content: center;
background: rgba(255, 255, 255, 0.1);
color: #e2e8f0;
padding: 10px;
border-radius: 50%;
width: 44px;
height: 44px;
}
.btn-icon:hover {
background: rgba(255, 255, 255, 0.2);
transform: scale(1.05);
}
.play-button {
display: flex;
align-items: center;
justify-content: center;
background: linear-gradient(135deg, #10b981 0%, #059669 100%);
color: white;
width: 60px;
height: 60px;
border-radius: 50%;
font-size: 20px;
}
.play-button:hover {
transform: scale(1.1);
box-shadow: 0 0 30px rgba(16, 185, 129, 0.5);
}
.sidebar {
width: 280px;
background: rgba(15, 15, 35, 0.8);
backdrop-filter: blur(20px);
border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.card {
background: rgba(255, 255, 255, 0.08);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.1);
border-radius: 16px;
transition: all 0.3s ease;
}
.card:hover {
background: rgba(255, 255, 255, 0.12);
transform: translateY(-2px);
}
.input-field {
background: rgba(255, 255, 255, 0.05);
border: 1px solid rgba(255, 255, 255, 0.2);
border-radius: 8px;
padding: 10px 14px;
color: #e2e8f0;
transition: all 0.3s ease;
}
.input-field:focus {
outline: none;
border-color: #6366f1;
box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
.waveform-container {
background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
border-radius: 12px;
padding: 16px;
}
.status-indicator {
width: 8px;
height: 8px;
border-radius: 50%;
margin-right: 8px;
}
.status-playing { background-color: #10b981; animation: pulse 1.5s infinite; }
.status-stopped { background-color: #6b7280; }
.status-error { background-color: #ef4444; }
@keyframes pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.5; }
}
.file-drop-zone {
border: 2px dashed rgba(99, 102, 241, 0.3);
border-radius: 16px;
transition: all 0.3s ease;
background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
}
.file-drop-zone:hover {
border-color: #6366f1;
background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
}
</style>
</head>
<body class="overflow-hidden">
<!-- 主容器 -->
<div class="flex h-screen">
<!-- 侧边栏 -->
<aside class="sidebar flex flex-col">
<div class="p-6 border-b border-white/10">
<h1 class="text-xl font-bold bg-gradient-to-r from-indigo-400 to-purple-400 bg-clip-text text-transparent">
NSF Player
</h1>
<p class="text-sm text-gray-400 mt-1">专业音频播放器</p>
</div>
<!-- 文件上传区域 -->
<div class="p-6 flex-1">
<div class="file-drop-zone p-6 text-center cursor-pointer mb-6" onclick="document.getElementById('nsfFile').click()">
<input type="file" id="nsfFile" accept=".nsf,.nsfe" class="hidden" onchange="loadNSF()">
<div class="w-12 h-12 mx-auto mb-3 rounded-full bg-gradient-to-br from-indigo-500 to-purple-600 flex items-center justify-center">
<svg class="w-6 h-6 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"></path>
</svg>
</div>
<h3 class="font-medium text-gray-200 mb-1">选择文件</h3>
<p class="text-sm text-gray-400">支持 NSF, NSFE 格式</p>
</div>
<!-- 轨道选择 -->
<div id="trackSelector" class="hidden mb-6">
<label class="block text-sm font-medium text-gray-300 mb-2">轨道选择</label>
<select id="trackSelect" class="w-full input-field">
</select>
</div>
<!-- 音量控制 -->
<div id="volumeControl" class="hidden mb-6">
<div class="flex items-center justify-between mb-2">
<label class="text-sm font-medium text-gray-300">音量</label>
<span id="volumeValue" class="text-sm text-gray-400">70%</span>
</div>
<input type="range" id="volumeSlider" min="0" max="100" value="70" class="w-full h-2 bg-gray-700 rounded-lg appearance-none cursor-pointer slider">
</div>
<!-- 状态指示器 -->
<div id="statusPanel" class="hidden p-4 rounded-lg bg-black/20">
<div class="flex items-center mb-2">
<div id="statusIndicator" class="status-indicator status-stopped"></div>
<span id="playStatus" class="text-sm font-medium">准备就绪</span>
</div>
<div class="text-xs text-gray-400 space-y-1">
<div>轨道: <span id="currentTrack" class="text-gray-300">-</span></div>
<div>时间: <span id="playTime" class="text-gray-300 font-mono">00:00</span></div>
</div>
</div>
</div>
</aside>
<!-- 主内容区域 -->
<main class="flex-1 overflow-hidden">
<!-- 顶部状态栏 -->
<header class="glass-effect px-6 py-4 border-b border-white/10">
<div id="status" class="flex items-center text-sm">
<div class="w-2 h-2 bg-blue-400 rounded-full mr-2 animate-pulse"></div>
<span>准备就绪，请选择NSF文件开始播放</span>
</div>
</header>
<!-- 内容区域 -->
<div class="p-6 h-full overflow-y-auto">
<div id="welcomeScreen" class="flex items-center justify-center h-full">
<div class="text-center">
<div class="w-24 h-24 mx-auto mb-6 rounded-full bg-gradient-to-br from-indigo-500 to-purple-600 flex items-center justify-center floating-element">
<svg class="w-12 h-12 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19V6l12-3v13M9 19c0 1.105-1.343 2-3 2s-3-.895-3-2 1.343-2 3-2 3 .895 3 2zm12-3c0 1.105-1.343 2-3 2s-3-.895-3-2 1.343-2 3-2 3 .895 3 2zM9 10l12-3"></path>
</svg>
</div>
<h2 class="text-2xl font-bold text-gray-200 mb-2">开始音频之旅</h2>
<p class="text-gray-400">选择一个NSF文件来体验高质量的复古游戏音乐</p>
</div>
</div>
<!-- 主要功能区域 -->
<div id="mainContent" class="hidden space-y-6">
<!-- 文件信息卡片 -->
<div class="card p-6">
<h2 class="text-lg font-semibold mb-4 flex items-center">
<svg class="w-5 h-5 mr-2 text-indigo-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path>
</svg>
文件信息
</h2>
<div id="nsfInfo" class="grid grid-cols-1 lg:grid-cols-3 gap-4"></div>
</div>
<div class="grid lg:grid-cols-2 gap-6">
<!-- 播放控制器 -->
<div class="card p-6">
<h2 class="text-lg font-semibold mb-6 flex items-center">
<svg class="w-5 h-5 mr-2 text-green-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h1.586a1 1 0 01.707.293l2.414 2.414a1 1 0 00.707.293H15M9 10v4a2 2 0 002 2h2a2 2 0 002-2v-4M9 10V9a2 2 0 012-2h2a2 2 0 012 2v1.01"></path>
</svg>
实时播放
</h2>
<!-- 播放控制按钮 -->
<div class="flex items-center justify-center space-x-4 mb-6">
<button onclick="prevTrack()" class="btn-icon">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
<path d="M6 6h2v12H6zm3.5 6l8.5 6V6z"/>
</svg>
</button>
<button id="playBtn" onclick="togglePlay()" class="play-button pulse-glow">
<svg id="playIcon" class="w-7 h-7" fill="currentColor" viewBox="0 0 24 24">
<path d="M8 5v14l11-7z"/>
</svg>
</button>
<button onclick="stopPlay()" class="btn-icon">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
<path d="M6 6h12v12H6z"/>
</svg>
</button>
<button onclick="nextTrack()" class="btn-icon">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
<path d="M6 18l8.5-6L6 6v12zM16 6v12h2V6h-2z"/>
</svg>
</button>
</div>
<!-- 波形显示 -->
<div class="waveform-container">
<canvas id="waveform" class="w-full h-20 rounded-lg"></canvas>
</div>
</div>
<!-- WAV转换器 -->
<div class="card p-6">
<h2 class="text-lg font-semibold mb-6 flex items-center">
<svg class="w-5 h-5 mr-2 text-purple-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4"></path>
</svg>
WAV 转换
</h2>
<div class="space-y-4">
<div>
<label class="block text-sm font-medium text-gray-300 mb-2">转换轨道</label>
<select id="wavTrackSelect" class="w-full input-field"></select>
</div>
<div class="grid grid-cols-2 gap-4">
<div>
<label class="block text-sm font-medium text-gray-300 mb-2">时长 (ms)</label>
<input type="number" id="wavLength" value="120000" class="w-full input-field">
</div>
<div>
<label class="block text-sm font-medium text-gray-300 mb-2">淡出 (ms)</label>
<input type="number" id="wavFade" value="5000" class="w-full input-field">
</div>
</div>
<button onclick="convertToWav()" class="btn-primary w-full flex items-center justify-center">
<svg class="w-5 h-5 mr-2" fill="currentColor" viewBox="0 0 24 24">
<path d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path>
</svg>
生成 WAV 文件
</button>
<div id="wavStatus" class="text-sm"></div>
</div>
</div>
</div>
</div>
</div>
</main>
</div>
<script>
let nsfPlayer = null;
let nsfInfo = null;
let audioContext = null;
let scriptProcessor = null;
let gainNode = null;
let isPlaying = false;
let currentTrack = 1;
let playStartTime = 0;
let audioBuffer = [];
let bufferSize = 4096;
let sampleRate = 44100;
let channels = 2;
// 显示状态
function showStatus(message, type = 'info') {
const statusElement = document.getElementById('status');
const indicator = statusElement.querySelector('div');
// 更新指示器颜色
indicator.className = 'w-2 h-2 rounded-full mr-2';
if (type === 'success') {
indicator.className += ' bg-green-400 animate-pulse';
} else if (type === 'error') {
indicator.className += ' bg-red-400 animate-pulse';
} else {
indicator.className += ' bg-blue-400 animate-pulse';
}
// 更新文本
statusElement.querySelector('span').textContent = message;
}
// 更新状态指示器
function updateStatusIndicator(status) {
const indicator = document.getElementById('statusIndicator');
const statusText = document.getElementById('playStatus');
indicator.className = 'status-indicator';
switch(status) {
case 'playing':
indicator.className += ' status-playing';
statusText.textContent = '播放中';
break;
case 'stopped':
indicator.className += ' status-stopped';
statusText.textContent = '已停止';
break;
case 'error':
indicator.className += ' status-error';
statusText.textContent = '错误';
break;
default:
indicator.className += ' status-stopped';
statusText.textContent = '准备就绪';
}
}
// 初始化WebAssembly
async function initWasm() {
if (nsfPlayer) return true;
try {
const script = document.createElement('script');
script.src = './build/nsf2wav_wasm.js';
return new Promise((resolve, reject) => {
script.onload = async () => {
try {
nsfPlayer = await NSFPlayer();
await new Promise(resolve => setTimeout(resolve, 200));
if (!nsfPlayer.ccall || !nsfPlayer._malloc || !nsfPlayer.HEAPU8) {
throw new Error('WebAssembly模块未完全初始化');
}
console.log('WebAssembly模块加载成功');
resolve(true);
} catch (error) {
reject(error);
}
};
script.onerror = reject;
document.head.appendChild(script);
});
} catch (error) {
showStatus('初始化失败: ' + error.message, 'error');
return false;
}
}
// 初始化Web Audio API
async function initAudio() {
if (audioContext) return true; // 如果已存在，则不重新创建
try {
audioContext = new (window.AudioContext || window.webkitAudioContext)({
sampleRate: sampleRate
});
// 创建音频处理节点
scriptProcessor = audioContext.createScriptProcessor(bufferSize, 0, channels);
// 创建增益节点用于音量控制
gainNode = audioContext.createGain();
gainNode.gain.value = 0.7;
// 连接音频节点
scriptProcessor.connect(gainNode);
gainNode.connect(audioContext.destination);
// 音频处理回调
scriptProcessor.onaudioprocess = function(audioProcessingEvent) {
if (!isPlaying) {
// 输出静音
for (let channel = 0; channel < channels; channel++) {
const outputBuffer = audioProcessingEvent.outputBuffer.getChannelData(channel);
for (let sample = 0; sample < bufferSize; sample++) {
outputBuffer[sample] = 0;
}
}
return;
}
// 生成音频数据
generateAudioData(audioProcessingEvent.outputBuffer);
};
// 音量控制
const volumeSlider = document.getElementById('volumeSlider');
const volumeValue = document.getElementById('volumeValue');
volumeSlider.addEventListener('input', (e) => {
const volume = e.target.value / 100;
gainNode.gain.value = volume;
volumeValue.textContent = e.target.value + '%';
});
console.log('Web Audio API初始化成功');
return true;
} catch (error) {
console.error('Web Audio API初始化失败:', error);
showStatus('音频系统初始化失败: ' + error.message, 'error');
return false;
}
}
// 生成音频数据
function generateAudioData(outputBuffer) {
if (!nsfPlayer || !isPlaying) return;
try {
// 分配内存用于音频数据
const frameCount = bufferSize;
const audioDataSize = frameCount * channels * 2; // 16位立体声
const audioPtr = nsfPlayer._malloc(audioDataSize);
// 调用WebAssembly函数生成音频
const result = nsfPlayer.ccall('nsf_render_audio', 'number',
['number', 'number', 'number'], [currentTrack, frameCount, audioPtr]);
if (result > 0) {
// 读取生成的音频数据
const int16Data = new Int16Array(nsfPlayer.HEAPU8.buffer, audioPtr, frameCount * channels);
// 转换为Float32并填充输出缓冲区
for (let channel = 0; channel < channels; channel++) {
const outputData = outputBuffer.getChannelData(channel);
for (let sample = 0; sample < frameCount; sample++) {
const sampleIndex = sample * channels + channel;
outputData[sample] = int16Data[sampleIndex] / 32768.0;
}
}
// 更新波形显示
updateWaveform(outputBuffer.getChannelData(0));
} else {
// 如果没有数据，输出静音
for (let channel = 0; channel < channels; channel++) {
const outputData = outputBuffer.getChannelData(channel);
outputData.fill(0);
}
}
nsfPlayer._free(audioPtr);
} catch (error) {
console.error('音频生成错误:', error);
// 输出静音
for (let channel = 0; channel < channels; channel++) {
const outputData = outputBuffer.getChannelData(channel);
outputData.fill(0);
}
}
}
// 更新波形显示
function updateWaveform(audioData) {
const canvas = document.getElementById('waveform');
const ctx = canvas.getContext('2d');
canvas.width = canvas.offsetWidth;
canvas.height = canvas.offsetHeight;
// 清除画布
ctx.clearRect(0, 0, canvas.width, canvas.height);
// 绘制波形背景网格
ctx.strokeStyle = 'rgba(99, 102, 241, 0.1)';
ctx.lineWidth = 0.5;
ctx.beginPath();
// 水平网格线
for (let i = 0; i <= 4; i++) {
const y = (canvas.height / 4) * i;
ctx.moveTo(0, y);
ctx.lineTo(canvas.width, y);
}
// 垂直网格线
for (let i = 0; i <= 10; i++) {
const x = (canvas.width / 10) * i;
ctx.moveTo(x, 0);
ctx.lineTo(x, canvas.height);
}
ctx.stroke();
// 绘制波形
const gradient = ctx.createLinearGradient(0, 0, canvas.width, 0);
gradient.addColorStop(0, '#10b981');
gradient.addColorStop(0.5, '#3b82f6');
gradient.addColorStop(1, '#8b5cf6');
ctx.strokeStyle = gradient;
ctx.lineWidth = 2;
ctx.shadowColor = '#10b981';
ctx.shadowBlur = 4;
ctx.beginPath();
const sliceWidth = canvas.width / audioData.length;
let x = 0;
for (let i = 0; i < audioData.length; i++) {
const v = audioData[i] * 0.4; // 略微减小振幅
const y = (v + 1) * canvas.height / 2;
if (i === 0) {
ctx.moveTo(x, y);
} else {
ctx.lineTo(x, y);
}
x += sliceWidth;
}
ctx.stroke();
ctx.shadowBlur = 0; // 重置阴影
}
// 加载NSF文件
async function loadNSF() {
const fileInput = document.getElementById('nsfFile');
const file = fileInput.files[0];
if (!file) {
showStatus('请选择一个NSF文件', 'error');
return;
}
showStatus('正在初始化...', 'info');
// 如果已有音频在播放，先停止并清理
if (audioContext) {
stopPlay();
await audioContext.close();
audioContext = null;
scriptProcessor = null;
console.log('旧的AudioContext已清理');
}
// 重置UI状态
document.getElementById('mainContent').classList.add('hidden');
document.getElementById('welcomeScreen').classList.remove('hidden');
updateStatusIndicator('stopped');
document.getElementById('playTime').textContent = '00:00';
if (!(await initWasm())) return;
showStatus('正在加载NSF文件...', 'info');
try {
// 读取文件
const arrayBuffer = await file.arrayBuffer();
const nsfData = new Uint8Array(arrayBuffer);
// 初始化播放器
const initResult = nsfPlayer.ccall('init_nsf_player', 'number', [], []);
if (!initResult) {
throw new Error('初始化NSF播放器失败');
}
// 加载数据
const dataPtr = nsfPlayer._malloc(nsfData.length);
nsfPlayer.HEAPU8.set(nsfData, dataPtr);
const loadResult = nsfPlayer.ccall('load_nsf_data', 'number',
['number', 'number'], [dataPtr, nsfData.length]);
nsfPlayer._free(dataPtr);
if (!loadResult) {
throw new Error('加载NSF数据失败');
}
// 获取信息
const infoPtr = nsfPlayer._malloc(1024);
const infoResult = nsfPlayer.ccall('get_nsf_info', 'number', ['number'], [infoPtr]);
if (infoResult) {
nsfInfo = {
title: nsfPlayer.UTF8ToString(infoPtr),
artist: nsfPlayer.UTF8ToString(infoPtr + 256),
copyright: nsfPlayer.UTF8ToString(infoPtr + 512),
totalSongs: nsfPlayer.getValue(infoPtr + 768, 'i32'),
defaultSong: nsfPlayer.getValue(infoPtr + 772, 'i32'),
lengthMs: nsfPlayer.getValue(infoPtr + 776, 'i32'),
fadeMs: nsfPlayer.getValue(infoPtr + 780, 'i32')
};
displayNSFInfo();
setupTrackSelector();
setupWavExporter();
// 初始化音频系统
if (await initAudio()) {
// 设置C++播放器参数
nsfPlayer.ccall('nsf_player_set_options', 'void', ['number', 'number'], [sampleRate, channels]);
document.getElementById('mainContent').classList.remove('hidden');
showStatus('NSF文件加载成功！可以开始实时播放或转换为WAV。', 'success');
}
} else {
throw new Error('获取NSF信息失败');
}
nsfPlayer._free(infoPtr);
} catch (error) {
showStatus('加载失败: ' + error.message, 'error');
console.error('Error:', error);
}
}
// 显示NSF信息
function displayNSFInfo() {
const infoDiv = document.getElementById('nsfInfo');
infoDiv.innerHTML = `
<div class="bg-gradient-to-br from-indigo-500/10 to-purple-500/10 p-4 rounded-lg border border-indigo-500/20">
<div class="text-xs text-indigo-300 mb-1">标题</div>
<div class="font-medium text-white">${nsfInfo.title || '未知'}</div>
</div>
<div class="bg-gradient-to-br from-green-500/10 to-blue-500/10 p-4 rounded-lg border border-green-500/20">
<div class="text-xs text-green-300 mb-1">艺术家</div>
<div class="font-medium text-white">${nsfInfo.artist || '未知'}</div>
</div>
<div class="bg-gradient-to-br from-purple-500/10 to-pink-500/10 p-4 rounded-lg border border-purple-500/20">
<div class="text-xs text-purple-300 mb-1">版权</div>
<div class="font-medium text-white text-sm">${nsfInfo.copyright || '未知'}</div>
</div>
<div class="bg-gradient-to-br from-yellow-500/10 to-orange-500/10 p-4 rounded-lg border border-yellow-500/20">
<div class="text-xs text-yellow-300 mb-1">轨道数</div>
<div class="font-medium text-white">${nsfInfo.totalSongs} 首</div>
</div>
<div class="bg-gradient-to-br from-cyan-500/10 to-blue-500/10 p-4 rounded-lg border border-cyan-500/20">
<div class="text-xs text-cyan-300 mb-1">默认轨道</div>
<div class="font-medium text-white">第 ${nsfInfo.defaultSong + 1} 首</div>
</div>
`;
// 显示主内容区域，隐藏欢迎界面
document.getElementById('mainContent').classList.remove('hidden');
document.getElementById('welcomeScreen').classList.add('hidden');
document.getElementById('trackSelector').classList.remove('hidden');
document.getElementById('volumeControl').classList.remove('hidden');
document.getElementById('statusPanel').classList.remove('hidden');
}
// 设置轨道选择器
function setupTrackSelector() {
const trackSelect = document.getElementById('trackSelect');
const wavTrackSelect = document.getElementById('wavTrackSelect');
trackSelect.innerHTML = '';
wavTrackSelect.innerHTML = '';
for (let i = 1; i <= nsfInfo.totalSongs; i++) {
const option = document.createElement('option');
option.value = i;
option.textContent = `轨道 ${i}`;
const wavOption = option.cloneNode(true);
if (i === nsfInfo.defaultSong + 1) {
option.selected = true;
wavOption.selected = true;
currentTrack = i;
}
trackSelect.appendChild(option);
wavTrackSelect.appendChild(wavOption);
}
trackSelect.addEventListener('change', (e) => {
const newTrack = parseInt(e.target.value);
if (newTrack !== currentTrack) {
currentTrack = newTrack;
// 重置播放器到新轨道
if (nsfPlayer) {
nsfPlayer.ccall('nsf_set_track', 'void', ['number'], [currentTrack - 1]);
nsfPlayer.ccall('nsf_reset', 'void', [], []);
}
updateCurrentTrackDisplay();
}
});
}
function setupWavExporter() {
const wavLengthInput = document.getElementById('wavLength');
const wavFadeInput = document.getElementById('wavFade');
if (nsfInfo.lengthMs > 0) {
wavLengthInput.value = nsfInfo.lengthMs;
}
if (nsfInfo.fadeMs > 0) {
wavFadeInput.value = nsfInfo.fadeMs;
}
}
async function convertToWav() {
if (!nsfPlayer || !nsfInfo) {
showStatus('请先加载一个NSF文件。', 'error');
return;
}
const wavStatus = document.getElementById('wavStatus');
wavStatus.innerHTML = '<span class="text-yellow-400">正在转换，请稍候...</span>';
try {
const track = parseInt(document.getElementById('wavTrackSelect').value);
const lengthMs = parseInt(document.getElementById('wavLength').value);
const fadeMs = parseInt(document.getElementById('wavFade').value);
const wavSampleRate = 44100;
const wavChannels = 2;
// 估算最大可能的WAV大小并分配内存
const maxDurationMs = lengthMs + fadeMs;
const maxDataSize = (maxDurationMs / 1000) * wavSampleRate * wavChannels * 2;
const headerSize = 44;
const bufferSize = headerSize + maxDataSize;
const wavPtr = nsfPlayer._malloc(bufferSize);
if (!wavPtr) {
throw new Error('无法为WAV文件分配内存。');
}
// 调用C++函数
const wavSize = nsfPlayer.ccall('nsf_to_wav', 'number',
['number', 'number', 'number', 'number', 'number', 'number', 'number'],
[track, lengthMs, fadeMs, wavSampleRate, wavChannels, wavPtr, bufferSize]
);
if (wavSize > 0) {
const wavData = new Uint8Array(nsfPlayer.HEAPU8.buffer, wavPtr, wavSize);
const blob = new Blob([wavData], { type: 'audio/wav' });
const url = URL.createObjectURL(blob);
const fileName = `track_${track}.wav`;
wavStatus.innerHTML = `
<span class="text-green-400">转换成功!</span>
<a href="${url}" download="${fileName}" class="btn ml-4">下载WAV文件</a>
`;
} else {
throw new Error('WAV转换失败，C++函数返回0。');
}
nsfPlayer._free(wavPtr);
} catch (error) {
wavStatus.innerHTML = `<span class="text-red-400">转换错误: ${error.message}</span>`;
console.error('WAV conversion error:', error);
}
}
// 切换播放状态
async function togglePlay() {
if (!audioContext || !nsfPlayer) return;
if (audioContext.state === 'suspended') {
await audioContext.resume();
}
if (isPlaying) {
stopPlay();
} else {
startPlay();
}
}
// 开始播放
function startPlay() {
if (!nsfPlayer) return;
isPlaying = true;
playStartTime = Date.now();
// 设置播放器
nsfPlayer.ccall('nsf_set_track', 'void', ['number'], [currentTrack - 1]);
nsfPlayer.ccall('nsf_reset', 'void', [], []);
// 更新播放按钮图标为暂停
const playIcon = document.getElementById('playIcon');
playIcon.innerHTML = `
<path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/>
`;
// 更新状态
updateStatusIndicator('playing');
updateCurrentTrackDisplay();
// 开始播放时间更新
startPlayTimer();
showStatus('开始实时播放...', 'success');
}
// 停止播放
function stopPlay() {
isPlaying = false;
// 更新播放按钮图标为播放
const playIcon = document.getElementById('playIcon');
playIcon.innerHTML = `
<path d="M8 5v14l11-7z"/>
`;
// 更新状态
updateStatusIndicator('stopped');
document.getElementById('playTime').textContent = '00:00';
stopPlayTimer();
showStatus('播放已停止', 'info');
}
// 上一首
function prevTrack() {
if (currentTrack > 1) {
currentTrack--;
document.getElementById('trackSelect').value = currentTrack;
if (nsfPlayer) {
nsfPlayer.ccall('nsf_set_track', 'void', ['number'], [currentTrack - 1]);
nsfPlayer.ccall('nsf_reset', 'void', [], []);
}
updateCurrentTrackDisplay();
}
}
// 下一首
function nextTrack() {
if (currentTrack < nsfInfo.totalSongs) {
currentTrack++;
document.getElementById('trackSelect').value = currentTrack;
if (nsfPlayer) {
nsfPlayer.ccall('nsf_set_track', 'void', ['number'], [currentTrack - 1]);
nsfPlayer.ccall('nsf_reset', 'void', [], []);
}
updateCurrentTrackDisplay();
}
}
// 更新当前轨道显示
function updateCurrentTrackDisplay() {
document.getElementById('currentTrack').textContent = `轨道 ${currentTrack}`;
}
// 播放时间计时器
let playTimer = null;
function startPlayTimer() {
playTimer = setInterval(() => {
if (isPlaying) {
const elapsed = Math.floor((Date.now() - playStartTime) / 1000);
const minutes = Math.floor(elapsed / 60);
const seconds = elapsed % 60;
document.getElementById('playTime').textContent =
`${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
}
}, 1000);
}
function stopPlayTimer() {
if (playTimer) {
clearInterval(playTimer);
playTimer = null;
}
}
// 页面加载时初始化
window.addEventListener('load', async () => {
showStatus('准备就绪，请选择NSF文件开始实时播放');
});
// 页面卸载时清理资源
window.addEventListener('beforeunload', () => {
if (audioContext) {
audioContext.close();
}
if (nsfPlayer) {
nsfPlayer.ccall('cleanup', 'void', [], []);
}
});
</script>
</body>
</html>