3LAS implementation

stream/index.js

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+const { spawn } = require('child_process');
+const config = require('../userconfig.js');
+const consoleCmd = require('../console.js');
+
+function enableAudioStream() {
+    // Specify the command and its arguments
+    const command = 'ffmpeg';
+    const flags = '-fflags +nobuffer+flush_packets -flags low_delay -rtbufsize 6192 -probesize 64 -audio_buffer_size 20';
+    const codec = '-acodec pcm_s16le -ar 48000 -ac 1';
+    const output = '-f s16le -fflags +nobuffer+flush_packets -packetsize 384 -flush_packets 1 -bufsize 960';
+    // Combine all the settings for the ffmpeg command
+    const ffmpegCommand = `${flags} -f dshow -i audio="${config.audioDeviceName}" ${codec} ${output} pipe:1 | node stream/3las.server.js -port ${config.audioPort} -samplerate 48000 -channels 1`;
+
+    consoleCmd.logInfo("Launching audio stream on port " + config.audioPort + ".");
+    // Spawn the child process
+
+    if(config.audioDeviceName.length > 2) {
+        const childProcess = spawn(command, [ffmpegCommand], { shell: true });
+
+            // Handle the output of the child process (optional)
+    /*childProcess.stdout.on('data', (data) => {
+    console.log(`stdout: ${data}`);
+    });
+
+    childProcess.stderr.on('data', (data) => {
+        console.error(`stderr: ${data}`);
+        });
+    
+        // Handle the child process exit event
+        childProcess.on('close', (code) => {
+        console.log(`Child process exited with code ${code}`);
+        });
+    
+        // You can also listen for the 'error' event in case the process fails to start
+        childProcess.on('error', (err) => {
+        console.error(`Error starting child process: ${err}`);
+        });*/
+    }
+}
+
+module.exports = {
+    enableAudioStream
+}