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feat: add stream audio broadcast support

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- 添加stream音频格式的客户端播放逻辑与网络消息解析
- 新增云服务端媒体静态服务端点，重构音频处理逻辑以返回流URL替代原始音频缓冲区
- 更新所有相关业务接口适配新的流音频播放流程
- 新增API基础地址环境变量配置
This commit is contained in:
Henry_Du
2026-07-31 20:15:21 +08:00
parent cd22b1ca3e
commit 952efbc2c7
2 changed files with 75 additions and 19 deletions
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CloudServer/server.js
+57 -15
View File
@@ -24,6 +24,7 @@ const HLS_OUTPUT_MODE = (process.env.HLS_OUTPUT_MODE || 'srs').toLowerCase();
const SRS_RTMP_BASE = process.env.SRS_RTMP_BASE || 'rtmp://127.0.0.1/live';
const STABROADCAST_PUBLIC_BASE_DEFAULT = 'https://stabroadcast.fse-media.group';
const STABROADCAST_PUBLIC_BASE = process.env.STABROADCAST_PUBLIC_BASE || STABROADCAST_PUBLIC_BASE_DEFAULT;
const STABROADCAST_API_BASE = process.env.STABROADCAST_API_BASE || 'http://stabadmin.fse-media.group';
const STABROADCAST_HLS_SUFFIX = process.env.STABROADCAST_HLS_SUFFIX || '.m3u8';
const HLS_TAIL_SILENCE_SEC = Number(process.env.HLS_TAIL_SILENCE_SEC || '0');
const HLS_PREBUILD = process.env.HLS_PREBUILD !== '0';
@@ -94,6 +95,26 @@ function sendListFile(res) {
app.get('/list.txt', (req, res) => sendListFile(res));
app.get('/uploads/list.txt', (req, res) => sendListFile(res));
function sendBinaryFile(res, filePath) {
if (!fs.existsSync(filePath)) return res.status(404).send('Not found');
res.sendFile(filePath);
}
app.get('/media/audio/general/:file', (req, res) => {
const name = path.basename(String(req.params.file || ''));
sendBinaryFile(res, path.join(audioGeneralDir, name));
});
app.get('/media/audio/station/:file', (req, res) => {
const name = path.basename(String(req.params.file || ''));
sendBinaryFile(res, path.join(audioStationDir, name));
});
app.get('/media/temp/:file', (req, res) => {
const name = path.basename(String(req.params.file || ''));
sendBinaryFile(res, path.join(tempBroadcastDir, name));
});
app.use(express.static(path.join(__dirname, 'public')));
app.set('view engine', 'ejs');
@@ -197,18 +218,20 @@ async function sendAudioBufferToStation(stationName, fallbackWs, task) {
if (!targetWs) throw new Error(`Station "${stationName}" not connected`);
const audioId = String(task.audioId || `${Date.now()}-${Math.random().toString(16).slice(2)}`);
const buf = task.buffer;
const buf = task.buffer || null;
const durationSec = Number(task.durationSec || 0);
const audioFormat = String(task.audioFormat || 'dfpwm').toLowerCase();
const streamUrl = task.streamUrl ? String(task.streamUrl) : null;
const startMsg = {
type: 'audio_start',
stationName,
audioId,
byteLength: buf.length,
byteLength: buf ? buf.length : 0,
sampleRate: Number(task.sampleRate || 48000),
channels: Number(task.channels || 1),
audioFormat,
streamUrl,
priority: Number(task.priority || 0),
interruptMode: task.interruptMode || getInterruptModeForPriority(Number(task.priority || 0)),
source: task.source || 'unknown'
@@ -216,6 +239,10 @@ async function sendAudioBufferToStation(stationName, fallbackWs, task) {
targetWs.send(JSON.stringify(startMsg));
if (streamUrl) {
return { audioId, cancelled: false, durationSec };
}
const token = task.cancelToken;
const SINGLE_SEND_LIMIT = 32 * 1024;
const CHUNK_SIZE = 16 * 1024;
@@ -255,6 +282,15 @@ function normalizeBaseName(name) {
return base || null;
}
function getApiBaseUrl() {
return String(STABROADCAST_API_BASE || '').replace(/\/+$/g, '');
}
function getManagedMediaUrl(kind, fileName) {
const base = getApiBaseUrl();
return `${base}/media/${kind}/${encodeURIComponent(fileName)}`;
}
function listMusicTracks() {
const out = new Set();
if (!fs.existsSync(audioGeneralDir)) return [];
@@ -315,8 +351,8 @@ function getPlaybackAudioByBaseName(baseName) {
if (fs.existsSync(p)) {
const buffer = fs.readFileSync(p);
return {
buffer,
audioFormat: 'wav',
audioFormat: 'stream',
streamUrl: getManagedMediaUrl(p.startsWith(audioStationDir) ? 'audio/station' : 'audio/general', path.basename(p)),
durationSec: getWavDurationSec(buffer) || 0
};
}
@@ -820,22 +856,26 @@ function buildConcatListFile(seq) {
return listPath;
}
function buildSequenceWavBuffer(seq) {
function buildSequenceWavFile(seq) {
const listPath = buildConcatListFile(seq);
if (!listPath) return null;
const outWavPath = path.join(tmpDir, `sequence-${Date.now()}-${Math.random().toString(16).slice(2)}.wav`);
const fileName = `sequence-${Date.now()}-${Math.random().toString(16).slice(2)}.wav`;
const outWavPath = path.join(tempBroadcastDir, fileName);
try {
execSync(`ffmpeg -hide_banner -loglevel error -y -f concat -safe 0 -i "${listPath}" -ac 1 -ar 48000 -c:a pcm_s16le "${outWavPath}"`);
const buffer = fs.readFileSync(outWavPath);
const durationSec = getWavDurationSec(buffer) || 0;
setTimeout(() => {
try { fs.unlinkSync(outWavPath); } catch {}
}, Math.max(10 * 60 * 1000, Math.ceil(durationSec * 2000)));
return {
buffer,
audioFormat: 'wav',
durationSec: getWavDurationSec(buffer) || 0
audioFormat: 'stream',
streamUrl: getManagedMediaUrl('temp', fileName),
durationSec
};
} finally {
try { fs.unlinkSync(listPath); } catch {}
try { fs.unlinkSync(outWavPath); } catch {}
}
}
@@ -1462,7 +1502,7 @@ function handlePlaySequence(ws, data) {
log('INFO', `Playing sequence for ${correctStation}: ${seq.join(', ')}`);
const builtAudio = buildSequenceWavBuffer(seq);
const builtAudio = buildSequenceWavFile(seq);
if (builtAudio) {
const priority = Number.isFinite(Number(data.priority))
? Number(data.priority)
@@ -1473,8 +1513,8 @@ function handlePlaySequence(ws, data) {
const audioId = String(requestId || `${Date.now()}-${Math.random().toString(16).slice(2)}`);
enqueueStationAudioTask(cleanStation, ws, {
buffer: builtAudio.buffer,
audioFormat: builtAudio.audioFormat,
streamUrl: builtAudio.streamUrl,
durationSec: builtAudio.durationSec,
priority,
interruptMode,
@@ -2250,6 +2290,7 @@ app.post('/api/temp-broadcast/publish', (req, res) => {
const wavBuf = fs.readFileSync(wavPath);
const durationSec = getWavDurationSec(wavBuf) || 0;
const streamUrl = getManagedMediaUrl('temp', path.basename(wavPath));
const priority = urgency === 'emergency' ? 2 : 0;
const interruptMode = urgency === 'emergency' ? 'all' : 'none';
const source = urgency === 'emergency' ? 'temp_emergency' : 'temp_normal';
@@ -2269,8 +2310,8 @@ app.post('/api/temp-broadcast/publish', (req, res) => {
continue;
}
enqueueStationAudioTask(name, ws, {
buffer: wavBuf,
audioFormat: 'wav',
audioFormat: 'stream',
streamUrl,
durationSec,
priority,
interruptMode,
@@ -2332,8 +2373,9 @@ app.post('/api/music/start', express.json(), (req, res) => {
}
enqueueStationAudioTask(name, currentWs, {
buffer: playbackAudio.buffer,
audioFormat: playbackAudio.audioFormat,
buffer: playbackAudio.buffer,
streamUrl: playbackAudio.streamUrl,
durationSec: playbackAudio.durationSec,
priority: -1,
interruptMode: 'none',