meshcore-sar_android/lib/services/voice_bitrate_preferences.dart

import 'package:shared_preferences/shared_preferences.dart';
import '../utils/voice_message_parser.dart';

/// Stores user-selected voice bitrate and maps it to supported codec modes.
class VoiceBitratePreferences {
  static const String _bitrateKey = 'voice_bitrate';
  static const int defaultBitrate = 1300;
  static const List<int> supportedBitrates = [700, 1200, 1300, 1400, 1600, 2400, 3200];

  static Future<int> getBitrate() async {
    final prefs = await SharedPreferences.getInstance();
    final value = prefs.getInt(_bitrateKey) ?? defaultBitrate;
    return supportedBitrates.contains(value) ? value : defaultBitrate;
  }

  static Future<void> setBitrate(int bitrate) async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setInt(_bitrateKey, bitrate);
  }

  static VoicePacketMode toVoiceMode(int bitrate) {
    switch (bitrate) {
      case 1200:
        return VoicePacketMode.mode1200;
      case 1300:
        return VoicePacketMode.mode1300;
      case 1400:
        return VoicePacketMode.mode1400;
      case 1600:
        return VoicePacketMode.mode1600;
      case 2400:
        return VoicePacketMode.mode2400;
      case 3200:
        return VoicePacketMode.mode3200;
      case 700:
        return VoicePacketMode.mode700c;
      default:
        return VoicePacketMode.mode1300;
    }
  }
}