ua1zbe/meshcore-sar_android
1
0
Fork 0
mirror of https://github.com/dz0ny/meshcore-sar.git synced 2026-08-11 16:30:28 +00:00
Code Issues Packages Projects Releases 1 Wiki Activity

Fix voice quality regression

Browse Source
This commit is contained in:
Janez T
2026-03-12 19:38:41 +01:00
parent baa1aa6edd
commit d2e6b692f3
14 changed files with 1023 additions and 301 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
lib/providers/voice_provider.dart
View File

@@ -1,5 +1,6 @@
import 'dart:async';
import 'dart:convert';
import 'dart:typed_data';
import 'package:flutter/foundation.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../models/contact.dart';
@@ -299,7 +300,11 @@ class VoiceProvider with ChangeNotifier {
);
try {
final pcm = await _codec.decodePackets(session.packets, session.mode);
final decodedPcm = await _codec.decodePackets(
session.packets,
session.mode,
);
final pcm = _preparePlaybackPcm(decodedPcm, session.mode);
debugPrint('🎙️ [VoiceProvider] decoded ${pcm.length} PCM samples');
_playingSessionId = sessionId;
notifyListeners();
@@ -319,6 +324,28 @@ class VoiceProvider with ChangeNotifier {
notifyListeners();
}
Int16List _preparePlaybackPcm(Int16List pcm, VoicePacketMode mode) {
if (pcm.isEmpty) {
return pcm;
}
if (mode.codec != VoiceCodecKind.lpcnet) {
return pcm;
}
final output = Int16List(pcm.length);
var dc = 0.0;
const dcAlpha = 0.995;
for (var i = 0; i < pcm.length; i++) {
final sample = pcm[i].toDouble();
dc = (dcAlpha * dc) + ((1.0 - dcAlpha) * sample);
final filtered = sample - dc;
output[i] = filtered.clamp(-32768.0, 32767.0).round();
}
return output;
}
Future<void> clearStoredVoiceData() async {
_sessions.clear();
_outgoingSessions.clear();