// 发布性能更新事件
this.emit('performance:update', this.systemState.performance);
}

requestAnimationFrame(updateFps);
};

updateFps();
}

// 音频效果初始化
async initializeAudioEffects() {
// 创建效果器链
await this.createEffectChain('main', [
{ type: 'compressor', config: { threshold: -24, ratio: 12 } },
{ type: 'eq', config: { frequencies: [60, 230, 910, 3500, 14000] } },
{ type: 'reverb', config: { decay: 2 } },
{ type: 'delay', config: { delayTime: 0.3, feedback: 0.5 } }
]);

// 创建辅助效果器
await this.createEffectChain('vocals', [
{ type: 'compressor', config: { threshold: -20, ratio: 4 } },
{ type: 'reverb', config: { decay: 1.5 } }
]);

await this.createEffectChain('instruments', [
{ type: 'compressor', config: { threshold: -30, ratio: 8 } },
{ type: 'delay', config: { delayTime: 0.2, feedback: 0.3 } }
]);
}

// 创建效果器链
async createEffectChain(name, effects) {
const chain = [];

for (const effect of effects) {
const node = await this.createEffectNode(effect.type, effect.config);
chain.push(node);
}

// 连接效果器链
for (let i = 0; i < chain.length - 1; i++) {
chain[i].connect(chain[i + 1]);
}

this.effectSystem.chains.set(name, chain);
return chain;
}

// 创建效果器节点
async createEffectNode(type, config) {
const context = this.systemState.audioContext;

switch (type) {
case 'compressor':
const compressor = context.createDynamicsCompressor();
Object.assign(compressor, config);
return compressor;

case 'reverb':
const convolver = context.createConvolver();
// 创建脉冲响应
const impulse = this.createImpulseResponse(config.decay || 2);
convolver.buffer = impulse;
return convolver;

case 'delay':
const delay = context.createDelay();
const feedback = context.createGain();
delay.delayTime.value = config.delayTime || 0.3;
feedback.gain.value = config.feedback || 0.5;
delay.connect(feedback);
feedback.connect(delay);
return delay;

case 'eq':
const filters = config.frequencies.map(freq => {
const filter = context.createBiquadFilter();
filter.frequency.value = freq;
filter.type = 'peaking';
filter.gain.value = 0;
return filter;
});
// 连接所有滤波器
for (let i = 0; i < filters.length - 1; i++) {
filters[i].connect(filters[i + 1]);
}
return filters[0]; // 返回第一个滤波器作为入口

default:
return context.createGain();
}
}

// 创建脉冲响应
createImpulseResponse(duration) {
const rate = this.systemState.audioContext.sampleRate;
const length = rate * duration;
const impulse = this.systemState.audioContext.createBuffer(2, length, rate);

for (let channel = 0; channel < 2; channel++) {
const data = impulse.getChannelData(channel);
for (let i = 0; i < length; i++) {
data[i] = (Math.random() * 2 - 1) * Math.pow(1 - i / length, 2);
}
}

return impulse;
}

// 缓冲池初始化
initializeBufferPool() {
this.bufferPool = new Map();

// 预创建音频缓冲区
const bufferSizes = [256, 512, 1024, 2048, 4096];

bufferSizes.forEach(size => {
const buffers = [];
for (let i = 0; i < this.config.performance.bufferPoolSize; i++) {
const buffer = this.systemState.audioContext.createBuffer(
this.config.audio.numberOfChannels,
size,
this.systemState.audioContext.sampleRate
);
buffers.push(buffer);
}
this.bufferPool.set(size, buffers);
});
}

// 获取缓冲池中的缓冲区
getBufferFromPool(size) {
const pool = this.bufferPool.get(size);
if (pool && pool.length > 0) {
return pool.pop();
}
return this.systemState.audioContext.createBuffer(
this.config.audio.numberOfChannels,
size,
this.systemState.audioContext.sampleRate
);
}

// 返还缓冲区到缓冲池
returnBufferToPool(buffer) {
const size = buffer.length;
const pool = this.bufferPool.get(size);
if (pool && pool.length < this.config.performance.bufferPoolSize * 2) {
pool.push(buffer);
}
}

// 预加载音频资源
async preloadAudioResources() {
const preloadPromises = [];

// 预加载基础音频
preloadPromises.push(this.preloadVoiceSamples());
preloadPromises.push(this.preloadInstrumentSamples());
preloadPromises.push(this.preloadEffectImpulses());

await Promise.all(preloadPromises);
}

// 预加载语音样本
async preloadVoiceSamples() {
const voices = ['female1', 'female2', 'male1', 'male2', 'child'];

for (const voice of voices) {
// 这里可以预加载语音样本
// 实际实现中可以从服务器加载或生成样本
this.cacheSystem.voiceSamples.set(voice, {
timestamp: Date.now(),
data: null // 实际实现中这里存储音频数据
});
}
}

// 情感分析系统初始化
initializeEmotionAnalysis() {
// 计算情感关键词权重
Object.keys(this.emotionSystem.analysis.keywords).forEach(emotion => {
const keywords = this.emotionSystem.analysis.