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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" />
<title>Web 应用云流化集成示例</title>
<style>
:root {
color-scheme: dark;
--bg: #0f172a;
--panel: #1e293b;
--border: #334155;
--text: #e2e8f0;
--muted: #94a3b8;
--accent: #38bdf8;
--ok: #4ade80;
--warn: #fbbf24;
}
* { box-sizing: border-box; }
body {
margin: 0;
font-family: "Segoe UI", sans-serif;
background: radial-gradient(circle at top, #172554, var(--bg));
color: var(--text);
min-height: 100vh;
}
.wrap {
max-width: 960px;
margin: 0 auto;
padding: 24px;
}
h1 {
margin: 0 0 8px;
font-size: 28px;
}
.subtitle {
color: var(--muted);
margin-bottom: 24px;
line-height: 1.6;
}
.grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 16px;
}
@media (max-width: 760px) {
.grid { grid-template-columns: 1fr; }
}
.panel {
background: rgba(30, 41, 59, 0.92);
border: 1px solid var(--border);
border-radius: 12px;
padding: 16px;
}
.panel h2 {
margin: 0 0 12px;
font-size: 16px;
}
.status-row {
display: flex;
align-items: center;
gap: 8px;
margin: 8px 0;
font-size: 14px;
}
.dot {
width: 10px;
height: 10px;
border-radius: 50%;
background: #64748b;
flex-shrink: 0;
}
.dot.ok { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.warn { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
.dot.error { background: #f87171; box-shadow: 0 0 8px #f87171; }
.status-hint {
margin: 4px 0 8px 18px;
color: var(--muted);
font-size: 12px;
line-height: 1.5;
}
.status-hint strong {
color: #fca5a5;
font-weight: 600;
}
.status-hint code {
color: var(--accent);
}
.stats {
display: grid;
grid-template-columns: repeat(2, minmax(0, 1fr));
gap: 8px;
margin-top: 12px;
}
.stat {
background: rgba(15, 23, 42, 0.8);
border: 1px solid var(--border);
border-radius: 8px;
padding: 10px;
}
.stat-label {
color: var(--muted);
font-size: 12px;
}
.stat-value {
font-size: 18px;
margin-top: 4px;
font-variant-numeric: tabular-nums;
}
button {
border: 1px solid var(--border);
background: #0f172a;
color: var(--text);
border-radius: 8px;
padding: 8px 12px;
cursor: pointer;
}
button:hover { border-color: var(--accent); }
button:disabled {
opacity: 0.45;
cursor: not-allowed;
}
button:disabled:hover { border-color: var(--border); }
.action-btn {
border: 1px solid var(--border);
background: #0f172a;
color: var(--text);
border-radius: 8px;
padding: 8px 12px;
cursor: pointer;
user-select: none;
-webkit-user-select: none;
display: inline-block;
}
.action-btn:hover { border-color: var(--accent); }
.action-btn.is-disabled {
opacity: 0.45;
cursor: not-allowed;
pointer-events: none;
}
/* 播放按钮：仅 is-playing 时高亮，避免播放结束后 hover 仍像选中态 */
#btn-play-buffer:hover,
#btn-play-buffer:active,
#btn-play-buffer:focus {
border-color: var(--border);
background: #0f172a;
outline: none;
box-shadow: none;
}
#btn-play-buffer:not(:disabled):hover {
border-color: var(--accent);
}
#btn-play-buffer.is-playing {
border-color: var(--accent);
background: #1e293b;
}
#btn-play-buffer.is-playing:hover,
#btn-play-buffer.is-playing:active {
border-color: var(--accent);
background: #1e293b;
}
.actions {
display: flex;
gap: 8px;
flex-wrap: wrap;
margin-top: 12px;
}
#log {
height: 220px;
overflow: auto;
background: rgba(15, 23, 42, 0.8);
border: 1px solid var(--border);
border-radius: 8px;
padding: 10px;
font-family: Consolas, monospace;
font-size: 12px;
line-height: 1.5;
white-space: pre-wrap;
}
canvas {
width: 100%;
height: 180px;
border-radius: 8px;
border: 1px solid var(--border);
background: #020617;
display: block;
}
code {
background: rgba(15, 23, 42, 0.8);
padding: 1px 6px;
border-radius: 4px;
font-size: 12px;
}
ol {
margin: 0;
padding-left: 20px;
color: var(--muted);
line-height: 1.7;
font-size: 14px;
}
.playback-guard {
display: flex;
align-items: center;
gap: 6px;
font-size: 13px;
color: var(--muted);
user-select: none;
}
.playback-guard input {
margin: 0;
}
.integration-code {
margin: 12px 0 16px;
padding: 12px;
background: rgba(15, 23, 42, 0.9);
border: 1px solid var(--border);
border-radius: 8px;
overflow: auto;
font-family: Consolas, monospace;
font-size: 12px;
line-height: 1.55;
color: #cbd5e1;
white-space: pre;
}
</style>
</head>
<body tabindex="-1">
<div class="wrap">
<h1>Web 应用云流化集成示例</h1>
<p class="subtitle">
本页面演示 Web 应用在云流化环境中与客户端通信的两种方式：文本消息通道（<code>dlcaReg</code> / <code>dlcaSend</code>），
以及接收客户端共享麦克风的 PCM 音频（<code>on_mic_pcm</code>）。
将本页部署为可访问的 Web 地址，并在管理平台中配置为应用入口即可验证。
</p>
<div class="grid">
<section class="panel">
<h2>连接状态</h2>
<div class="status-row">
<span class="dot" id="dot-bridge"></span>
<span id="status-bridge">等待云流化桥接就绪...</span>
</div>
<div class="status-row">
<span class="dot" id="dot-message"></span>
<span id="status-message">消息通道未注册</span>
</div>
<div class="status-row">
<span class="dot" id="dot-mic"></span>
<span id="status-mic">麦克风音频通道未注册</span>
</div>
<div class="status-row">
<span class="dot" id="dot-capture"></span>
<span id="status-capture">客户端麦克风采集：等待检测</span>
</div>
<div class="status-hint" id="capture-hint" hidden></div>
<div class="actions">
<button id="btn-send">发送测试消息到客户端</button>
<label class="playback-guard">
<input type="checkbox" id="chk-playback-test" />
启用回放测试
</label>
<button type="button" id="btn-play-buffer" disabled>播放最近10秒</button>
<button id="btn-clear-log">清空日志</button>
</div>
</section>
<section class="panel">
<h2>麦克风音频统计</h2>
<div class="stats">
<div class="stat">
<div class="stat-label">缓存时长</div>
<div class="stat-value" id="stat-buffer">0.0s</div>
</div>
<div class="stat">
<div class="stat-label">音频格式</div>
<div class="stat-value" id="stat-format">s16le</div>
</div>
<div class="stat">
<div class="stat-label">当前音量</div>
<div class="stat-value" id="stat-level">0%</div>
</div>
<div class="stat">
<div class="stat-label">采样率</div>
<div class="stat-value" id="stat-rate">-</div>
</div>
<div class="stat">
<div class="stat-label">声道数</div>
<div class="stat-value" id="stat-channels">-</div>
</div>
<div class="stat">
<div class="stat-label">累计包数</div>
<div class="stat-value" id="stat-packets">0</div>
</div>
<div class="stat">
<div class="stat-label">累计字节</div>
<div class="stat-value" id="stat-bytes">0</div>
</div>
</div>
</section>
</div>
<section class="panel" style="margin-top: 16px;">
<h2>麦克风音量可视化</h2>
<p style="margin: 0 0 12px; color: var(--muted); font-size: 13px;">
收到 PCM 后，波形与音量条会随客户端说话实时变化；页面会滚动缓存最近 10 秒音频。
回放测试需先勾选「启用回放测试」，再点击「播放最近10秒」（避免云流化误触）。
</p>
<canvas id="demo-canvas" width="640" height="180"></canvas>
</section>
<section class="panel" style="margin-top: 16px;">
<h2>运行日志</h2>
<div id="log"></div>
</section>
<section class="panel" style="margin-top: 16px;">
<h2>接入说明</h2>
<ol>
<li>
集成 <code>dlcaReg</code> 相关代码（页面加载早期执行），示例：
<pre class="integration-code"><script>
(function () {
function initBridge() {
if (typeof dlcaReg !== 'function') return false;
dlcaReg('on_message', function (text) {
console.log('收到客户端消息:', text);
});
dlcaReg('on_mic_pcm', function (pcmBuffer, sampleRate, channelCount, sampleCount) {
var pcm = new Int16Array(pcmBuffer);
// 处理 s16le PCM 数据
});
return true;
}
if (!initBridge()) {
setInterval(function () { initBridge() && clearInterval(this); }, 500);
}
})();
</script></pre>
</li>
<li>
集成完成后部署 Web 内容，并在云流化后台配置应用入口地址；在<strong>高级设置</strong>中开启
<strong>通信插件</strong> 和 <strong>麦克风组件</strong> 两个选项。
</li>
<li>
访问时请使用 <code>https</code> 协议，默认端口为 <code>8086</code>。
后台复制出来的地址默认为 <code>http</code>，需手动改为 <code>https://主机:8086/...</code>。
</li>
<li>网页打开后，点击<strong>允许麦克风使用</strong>，然后即可调通麦克风通道。</li>
</ol>
</section>
</div>
<script>
(function () {
const logEl = document.getElementById('log');
const dotBridge = document.getElementById('dot-bridge');
const dotMessage = document.getElementById('dot-message');
const dotMic = document.getElementById('dot-mic');
const dotCapture = document.getElementById('dot-capture');
const statusBridge = document.getElementById('status-bridge');
const statusMessage = document.getElementById('status-message');
const statusMic = document.getElementById('status-mic');
const statusCapture = document.getElementById('status-capture');
const captureHint = document.getElementById('capture-hint');
const statRate = document.getElementById('stat-rate');
const statChannels = document.getElementById('stat-channels');
const statPackets = document.getElementById('stat-packets');
const statBytes = document.getElementById('stat-bytes');
const statLevel = document.getElementById('stat-level');
const statBuffer = document.getElementById('stat-buffer');
const btnPlayBuffer = document.getElementById('btn-play-buffer');
const chkPlaybackTest = document.getElementById('chk-playback-test');
const canvas = document.getElementById('demo-canvas');
const ctx = canvas.getContext('2d');
let packetCount = 0;
let byteCount = 0;
let bridgeReady = false;
let clientCaptureActive = false;
let captureWaitTimer = null;
let targetLevel = 0;
let displayLevel = 0;
let waveform = new Float32Array(128);
let playbackContext = null;
let playbackSource = null;
let isPlaybackActive = false;
const BUFFER_SECONDS = 10;
const CAPTURE_WAIT_MS = 15000;
const CLIENT_HTTPS_HINT = '请使用 <code>https://主机:8086/...</code> 访问客户端；' +
'后台复制的地址默认为 http，需改为 https。打开页面后请允许麦克风使用。';
function log(message) {
const line = '[' + new Date().toLocaleTimeString() + '] ' + message;
logEl.textContent += line + '\n';
logEl.scrollTop = logEl.scrollHeight;
console.log(line);
}
function setStatus(dot, textEl, state, text) {
dot.className = 'dot';
if (state === 'ok') dot.classList.add('ok');
else if (state === 'warn') dot.classList.add('warn');
else if (state === 'error') dot.classList.add('error');
textEl.textContent = text;
}
function showCaptureHint(html, visible) {
captureHint.hidden = !visible;
captureHint.innerHTML = html;
}
function updateClientCaptureStatus(options) {
const abnormal = options && options.abnormal;
if (!bridgeReady) {
setStatus(dotCapture, statusCapture, 'pending', '客户端麦克风采集：等待云流化就绪');
showCaptureHint('', false);
return;
}
if (clientCaptureActive) {
setStatus(dotCapture, statusCapture, 'ok',
'客户端麦克风采集正常（已收到音频数据）');
showCaptureHint('', false);
return;
}
if (abnormal) {
setStatus(dotCapture, statusCapture, 'error',
'客户端麦克风采集异常（未收到数据）');
showCaptureHint(
'<strong>采集异常</strong>：长时间未收到麦克风 PCM。' +
'请确认已允许麦克风使用，并使用 HTTPS（端口 8086）访问。' + CLIENT_HTTPS_HINT,
true
);
return;
}
setStatus(dotCapture, statusCapture, 'warn',
'客户端麦克风采集：等待数据中...');
showCaptureHint(
'已就绪，请使用 HTTPS 打开客户端页面并允许麦克风使用。' + CLIENT_HTTPS_HINT,
true
);
}
function markClientCaptureActive() {
if (clientCaptureActive) {
return;
}
clientCaptureActive = true;
if (captureWaitTimer) {
clearTimeout(captureWaitTimer);
captureWaitTimer = null;
}
updateClientCaptureStatus();
}
function startCaptureWaitTimer() {
if (captureWaitTimer) {
clearTimeout(captureWaitTimer);
}
captureWaitTimer = setTimeout(function () {
if (!clientCaptureActive) {
updateClientCaptureStatus({ abnormal: true });
log('警告：超时未收到客户端麦克风数据，请确认已用 https://主机:8086 访问并允许麦克风');
}
}, CAPTURE_WAIT_MS);
}
class PcmHistoryBuffer {
constructor(maxSeconds) {
this.maxSeconds = maxSeconds;
this.chunks = [];
this.sampleRate = 0;
this.channelCount = 0;
this.totalSamples = 0;
}
reset() {
this.chunks = [];
this.totalSamples = 0;
}
push(pcmBuffer, sampleRate, channelCount, sampleCount) {
if (sampleCount <= 0 && pcmBuffer.byteLength > 0) {
sampleCount = pcmBuffer.byteLength / 2;
}
if (sampleCount <= 0) {
return;
}
if (this.sampleRate &&
(this.sampleRate !== sampleRate || this.channelCount !== channelCount)) {
this.reset();
}
this.sampleRate = sampleRate;
this.channelCount = channelCount;
const int16 = new Int16Array(pcmBuffer, 0, sampleCount);
this.chunks.push(new Int16Array(int16));
this.totalSamples += int16.length;
const maxSamples = this.maxSeconds * sampleRate * channelCount;
while (this.totalSamples > maxSamples && this.chunks.length > 0) {
const removed = this.chunks.shift();
this.totalSamples -= removed.length;
}
}
getBufferedSeconds() {
if (!this.sampleRate || !this.channelCount || this.totalSamples <= 0) {
return 0;
}
return this.totalSamples / (this.sampleRate * this.channelCount);
}
hasData() {
return this.totalSamples > 0 && this.sampleRate > 0 && this.channelCount > 0;
}
buildMergedPcm() {
if (!this.hasData()) {
return null;
}
const merged = new Int16Array(this.totalSamples);
let offset = 0;
for (let i = 0; i < this.chunks.length; i++) {
merged.set(this.chunks[i], offset);
offset += this.chunks[i].length;
}
return merged;
}
}
const pcmHistory = new PcmHistoryBuffer(BUFFER_SECONDS);
function updateBufferUi() {
const seconds = pcmHistory.getBufferedSeconds();
statBuffer.textContent = seconds.toFixed(1) + 's';
const canPlay = seconds >= 0.1 && chkPlaybackTest.checked && !isPlaybackActive;
btnPlayBuffer.disabled = !canPlay;
}
function setPlayBufferPlaying(playing) {
if (playing) {
btnPlayBuffer.classList.add('is-playing');
btnPlayBuffer.textContent = '播放中...';
btnPlayBuffer.disabled = true;
} else {
btnPlayBuffer.classList.remove('is-playing');
btnPlayBuffer.textContent = '播放最近10秒';
updateBufferUi();
}
}
function stopPlayback() {
if (!playbackSource) {
return;
}
const source = playbackSource;
playbackSource = null;
try {
source.stop();
} catch (e) {
// ignore if already stopped
}
try {
source.disconnect();
} catch (e) {
// ignore
}
}
function closePlaybackContext() {
stopPlayback();
if (!playbackContext) {
return;
}
try {
playbackContext.close();
} catch (e) {
// ignore
}
playbackContext = null;
}
// 须在用户点击的同步调用栈内创建 AudioContext；CEF 下 resume() 常无声
function primePlaybackContext() {
closePlaybackContext();
playbackContext = new (window.AudioContext || window.webkitAudioContext)();
}
function finishPlayback(source) {
if (playbackSource !== source) {
return;
}
playbackSource = null;
isPlaybackActive = false;
setPlayBufferPlaying(false);
}
function playRecentBuffer() {
if (isPlaybackActive) {
return;
}
if (!pcmHistory.hasData()) {
log('缓存为空，无法播放');
return;
}
isPlaybackActive = true;
setPlayBufferPlaying(true);
try {
if (!playbackContext) {
log('AudioContext 未就绪，请重新点击播放');
return;
}
const merged = pcmHistory.buildMergedPcm();
if (!merged) {
log('缓存为空，无法播放');
return;
}
const sampleRate = pcmHistory.sampleRate;
const channelCount = pcmHistory.channelCount;
const frames = Math.floor(merged.length / channelCount);
if (frames <= 0) {
log('缓存数据无效，无法播放');
return;
}
stopPlayback();
const audioBuffer = playbackContext.createBuffer(channelCount, frames, sampleRate);
for (let ch = 0; ch < channelCount; ch++) {
const channelData = audioBuffer.getChannelData(ch);
for (let i = 0; i < frames; i++) {
channelData[i] = merged[i * channelCount + ch] / 32768;
}
}
const source = playbackContext.createBufferSource();
source.buffer = audioBuffer;
source.connect(playbackContext.destination);
source.onended = function () {
finishPlayback(source);
};
playbackSource = source;
const duration = pcmHistory.getBufferedSeconds();
source.start(0);
log('开始播放缓存音频: ' + duration.toFixed(1) + 's, ' +
sampleRate + 'Hz, ' + channelCount + ' 声道, ctx=' + playbackContext.state);
} catch (err) {
stopPlayback();
isPlaybackActive = false;
setPlayBufferPlaying(false);
log('播放失败: ' + err.message);
} finally {
if (isPlaybackActive && !playbackSource) {
stopPlayback();
isPlaybackActive = false;
setPlayBufferPlaying(false);
}
}
}
function analyzePcm(pcmBuffer, sampleCount) {
const int16 = new Int16Array(pcmBuffer);
const count = sampleCount > 0 ? Math.min(sampleCount, int16.length) : int16.length;
if (count <= 0) {
return;
}
let sumSquares = 0;
for (let i = 0; i < count; i++) {
const sample = int16[i] / 32768;
sumSquares += sample * sample;
}
const rms = Math.sqrt(sumSquares / count);
targetLevel = Math.min(100, Math.round(rms * 500));
const barCount = waveform.length;
const step = Math.max(1, Math.floor(count / barCount));
for (let i = 0; i < barCount; i++) {
const index = Math.min(i * step, count - 1);
waveform[i] = int16[index] / 32768;
}
}
function drawDemoFrame() {
const w = canvas.width;
const h = canvas.height;
displayLevel += (targetLevel - displayLevel) * 0.25;
statLevel.textContent = Math.round(displayLevel) + '%';
const gradient = ctx.createLinearGradient(0, 0, w, h);
gradient.addColorStop(0, '#0f172a');
gradient.addColorStop(1, '#1e1b4b');
ctx.fillStyle = gradient;
ctx.fillRect(0, 0, w, h);
const meterW = w - 40;
const meterH = 14;
const meterX = 20;
const meterY = 24;
ctx.fillStyle = 'rgba(255,255,255,0.12)';
ctx.fillRect(meterX, meterY, meterW, meterH);
ctx.fillStyle = displayLevel > 60 ? '#f87171' : displayLevel > 30 ? '#fbbf24' : '#4ade80';
ctx.fillRect(meterX, meterY, meterW * (displayLevel / 100), meterH);
ctx.strokeStyle = 'rgba(56, 189, 248, 0.9)';
ctx.lineWidth = 2;
ctx.beginPath();
const waveTop = 56;
const waveHeight = h - waveTop - 24;
const waveStep = (w - 40) / waveform.length;
for (let i = 0; i < waveform.length; i++) {
const x = 20 + i * waveStep;
const y = waveTop + waveHeight / 2 - waveform[i] * waveHeight * 0.45;
if (i === 0) ctx.moveTo(x, y);
else ctx.lineTo(x, y);
}
ctx.stroke();
ctx.fillStyle = 'rgba(255,255,255,0.08)';
ctx.fillRect(20, waveTop, w - 40, waveHeight);
ctx.fillStyle = '#e2e8f0';
ctx.font = '14px Segoe UI, sans-serif';
ctx.fillText('麦克风音量 ' + Math.round(displayLevel) + '%', 20, 16);
ctx.fillStyle = '#94a3b8';
ctx.font = '12px Segoe UI, sans-serif';
const hint = clientCaptureActive
? '对着客户端麦克风说话，观察波形变化'
: '等待客户端共享麦克风...';
ctx.fillText(hint, 20, h - 8);
if (!clientCaptureActive) {
targetLevel = Math.max(0, targetLevel - 1);
}
requestAnimationFrame(drawDemoFrame);
}
function registerBridgeCallbacks() {
if (typeof window.dlcaReg !== 'function') {
setStatus(dotBridge, statusBridge, 'warn', '当前为本地预览模式，请通过云流化会话访问');
updateClientCaptureStatus();
return false;
}
if (bridgeReady) {
return true;
}
setStatus(dotBridge, statusBridge, 'ok', '云流化桥接已就绪');
window.dlcaReg('on_message', (text) => {
log('收到客户端消息: ' + text);
});
setStatus(dotMessage, statusMessage, 'ok', '消息通道已注册');
window.dlcaReg('on_mic_pcm', (pcmBuffer, sampleRate, channelCount, sampleCount) => {
if (sampleCount <= 0 && pcmBuffer.byteLength > 0) {
sampleCount = pcmBuffer.byteLength / 2;
}
markClientCaptureActive();
packetCount += 1;
byteCount += pcmBuffer.byteLength;
statRate.textContent = String(sampleRate);
statChannels.textContent = String(channelCount);
statPackets.textContent = String(packetCount);
statBytes.textContent = String(byteCount);
analyzePcm(pcmBuffer, sampleCount);
pcmHistory.push(pcmBuffer, sampleRate, channelCount, sampleCount);
updateBufferUi();
if (packetCount === 1 || packetCount % 50 === 0) {
log('收到麦克风 PCM: bytes=' + pcmBuffer.byteLength +
', rate=' + sampleRate +
', channels=' + channelCount +
', samples=' + sampleCount);
}
});
setStatus(dotMic, statusMic, 'ok', '麦克风音频通道已注册，等待客户端麦克风数据');
bridgeReady = true;
log('桥接接口注册完成');
updateClientCaptureStatus();
startCaptureWaitTimer();
return true;
}
document.querySelectorAll('.actions button').forEach(function (btn) {
if (btn.id === 'btn-play-buffer') {
return;
}
btn.addEventListener('mousedown', function (e) {
if (!btn.disabled) {
e.preventDefault();
}
});
});
document.getElementById('btn-send').addEventListener('click', function () {
if (typeof window.dlcaSend !== 'function') {
log('当前环境不支持 dlcaSend');
return;
}
const payload = 'hello from web app ' + new Date().toISOString();
window.dlcaSend(payload);
log('已发送到客户端: ' + payload);
});
document.getElementById('btn-play-buffer').addEventListener('click', function () {
if (btnPlayBuffer.disabled || isPlaybackActive) {
return;
}
if (!chkPlaybackTest.checked) {
log('请先勾选「启用回放测试」');
return;
}
primePlaybackContext();
playRecentBuffer();
});
chkPlaybackTest.addEventListener('change', function () {
if (!chkPlaybackTest.checked) {
closePlaybackContext();
isPlaybackActive = false;
setPlayBufferPlaying(false);
}
updateBufferUi();
});
document.getElementById('btn-clear-log').addEventListener('click', function () {
logEl.textContent = '';
});
drawDemoFrame();
updateClientCaptureStatus();
updateBufferUi();
if (!registerBridgeCallbacks()) {
const timer = setInterval(function () {
if (registerBridgeCallbacks()) {
clearInterval(timer);
}
}, 500);
}
log('示例页面已加载。请通过管理平台配置应用入口，并从客户端进入云流化会话进行验证。');
})();
</script>
</body>
</html>