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feat: add Codec2 voice messages over LoRa mesh (iOS/macOS only)

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Push-to-talk voice messaging using the Codec2 ultra-low-bitrate speech
codec, transmitted as V: prefixed packets over the existing MeshCore
LoRa mesh pipeline.

Voice recording UI (long-press send button or + menu) is gated behind
Platform.isIOS || Platform.isMacOS since the `record` package only
supports microphone capture on those platforms in this build.

Key changes:
- VoiceRecorderService: streams 8kHz mono PCM chunks via `record` package
- VoicePlayerService: decodes Codec2 bytes to WAV and plays via audioplayers
- VoiceCodecService: async Codec2 encode/decode in background isolates
- VoiceProvider: reassembles multi-packet sessions, drives playback
- VoiceMessageBubble: shows packet progress, play/stop controls
- MessagesProvider: detects V: prefix, routes to VoiceProvider
- MessagesTab: PTT long-press gesture + recording indicator (iOS/macOS)
- Message model: isVoice + voiceId fields for session tracking
- Auto-selects codec mode from radio bandwidth (700C/1200/1300 bps)
- codec2_flutter + meshcore_client switched from path to git deps
This commit is contained in:
Janez T
2026-02-28 19:19:18 +01:00
parent 3e5b2ac0de
commit f96d8022ac
27 changed files with 1509 additions and 81 deletions
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106
lib/widgets/messages/message_bubble.dart
View File

@@ -19,6 +19,7 @@ import '../../utils/sar_message_parser.dart';
import '../../utils/key_comparison.dart';
import '../../l10n/app_localizations.dart';
import '../../utils/message_extensions.dart';
import 'voice_message_bubble.dart';
/// Reusable message bubble widget that displays messages with various types:
/// - Regular text messages (channel or direct)
@@ -634,6 +635,7 @@ class _MessageBubbleState extends State<MessageBubble> {
final displayName = isOwnMessage
? AppLocalizations.of(context)!.you
: message.getRichDisplayName(senderContact);
final l10n = AppLocalizations.of(context)!;
// For sent direct/channel messages, look up destination display label
dynamic recipientContact;
@@ -667,17 +669,22 @@ class _MessageBubbleState extends State<MessageBubble> {
}
} else if (isOwnMessage && message.isChannelMessage) {
if (message.channelIdx == 0) {
recipientDisplayName = AppLocalizations.of(context)!.publicChannel;
recipientDisplayName = l10n.publicChannel;
} else {
final channelContact = contactsProvider.channels.where((c) {
return c.publicKey.length > 1 && c.publicKey[1] == message.channelIdx;
}).firstOrNull;
recipientDisplayName =
channelContact?.getLocalizedDisplayName(context) ??
'${AppLocalizations.of(context)!.channel} ${message.channelIdx}';
'${l10n.channel} ${message.channelIdx}';
}
}
final recipientSubtitle =
isOwnMessage && message.isChannelMessage && recipientDisplayName != null
? '${l10n.channel}: $recipientDisplayName'
: recipientDisplayName;
return GestureDetector(
onTap: widget.onTap,
onLongPress: widget.isCompact ? null : () => _showMessageOptions(context),
@@ -860,47 +867,63 @@ class _MessageBubbleState extends State<MessageBubble> {
const Icon(Icons.person, size: 16),
const SizedBox(width: 4),
Expanded(
child: Text(
displayName,
style: Theme.of(context).textTheme.labelMedium?.copyWith(
fontWeight: FontWeight.bold,
color: isOwnMessage
? Theme.of(context).colorScheme.primary
: null,
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
displayName,
style: Theme.of(context).textTheme.labelMedium
?.copyWith(
fontWeight: FontWeight.bold,
color: isOwnMessage
? Theme.of(context).colorScheme.primary
: null,
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
// Show destination for sent direct/channel messages on a separate line
if (isOwnMessage &&
recipientSubtitle != null &&
!widget.isCompact) ...[
const SizedBox(height: 2),
Row(
children: [
Icon(
Icons.arrow_forward,
size: 12,
color: Theme.of(context)
.textTheme
.labelSmall
?.color
?.withValues(alpha: 0.7),
),
const SizedBox(width: 4),
Expanded(
child: Text(
recipientSubtitle,
style: Theme.of(context).textTheme.labelSmall
?.copyWith(
color: Theme.of(context)
.textTheme
.labelSmall
?.color
?.withValues(alpha: 0.75),
fontStyle: FontStyle.italic,
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
),
],
),
],
],
),
),
// Show destination for sent direct/channel messages
if (isOwnMessage &&
recipientDisplayName != null &&
!widget.isCompact) ...[
const SizedBox(width: 4),
Icon(
Icons.arrow_forward,
size: 14,
color: Theme.of(
context,
).textTheme.labelSmall?.color?.withValues(alpha: 0.6),
),
const SizedBox(width: 4),
Flexible(
child: Text(
recipientDisplayName,
style: Theme.of(context).textTheme.labelSmall?.copyWith(
color: Theme.of(
context,
).textTheme.labelSmall?.color?.withValues(alpha: 0.7),
fontStyle: FontStyle.italic,
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
),
],
// Time for regular messages (not shown for SAR/drawing as it's already above)
if (!isSarMarker && !message.isDrawing) ...[
const SizedBox(width: 8),
// Hop count indicator for received messages
if (!isOwnMessage && message.pathLen < 255) ...[
const SizedBox(width: 4),
@@ -1055,6 +1078,11 @@ class _MessageBubbleState extends State<MessageBubble> {
);
},
)
// Voice message content
else if (message.isVoice &&
message.voiceId != null &&
!widget.isCompact)
VoiceMessageBubble(message: message, isSentByMe: isOwnMessage)
// Regular message content
else if (!message.isDrawing || widget.isCompact)
Text(message.text, style: Theme.of(context).textTheme.bodyMedium),