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Fix DMR audio stream failing with "no supported source found"

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Digital voice is intermittent — dsd-fme only outputs PCM during active
voice transmissions. Without input, ffmpeg never wrote the WAV header
and the browser got an empty response. Add an audio bridge thread that
feeds 100ms silence chunks during voice gaps so ffmpeg always has input
and the browser receives a continuous WAV stream. Add auto-reconnect
on the frontend if the audio stream drops while the decoder is running.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Smittix
2026-02-09 18:14:33 +00:00
parent b023e4cdc7
commit fce66a6a60
2 changed files with 66 additions and 12 deletions
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13
static/js/modes/dmr.js
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@@ -557,7 +557,18 @@ function startDmrAudio() {
if (volSlider) audioPlayer.volume = volSlider.value / 100;
audioPlayer.onplaying = () => updateDmrAudioStatus('STREAMING');
audioPlayer.onerror = () => updateDmrAudioStatus('ERROR');
audioPlayer.onerror = () => {
// Retry if decoder is still running (stream may have dropped)
if (isDmrRunning && dmrHasAudio) {
console.warn('[DMR] Audio stream error, retrying in 2s...');
updateDmrAudioStatus('RECONNECTING');
setTimeout(() => {
if (isDmrRunning && dmrHasAudio) startDmrAudio();
}, 2000);
} else {
updateDmrAudioStatus('OFF');
}
};
audioPlayer.play().catch(e => {
console.warn('[DMR] Audio autoplay blocked:', e);