desktop_audio_capture 0.0.2 
desktop_audio_capture: ^0.0.2 copied to clipboard
Flutter plugin for capturing audio on desktop platforms (macOS, Linux, Windows). Supports microphone and system audio with streaming, decibel monitoring, and device management.
import 'package:desktop_audio_capture/model/input_device_type.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'providers/audio_capture_provider.dart';
import 'providers/settings_provider.dart';
import 'widgets/audio_data_display.dart';
import 'widgets/decibel_display.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MultiProvider(
providers: [
ChangeNotifierProvider(create: (_) => AudioCaptureProvider()),
ChangeNotifierProvider(create: (_) => SettingsProvider()),
],
child: MaterialApp(
title: 'Audio Capture Example',
debugShowCheckedModeBanner: false,
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
useMaterial3: true,
),
home: const AudioCaptureHome(),
),
);
}
}
class AudioCaptureHome extends StatelessWidget {
const AudioCaptureHome({super.key});
Future<void> _handleToggleMic(BuildContext context) async {
final captureProvider = context.read<AudioCaptureProvider>();
final settingsProvider = context.read<SettingsProvider>();
try {
await captureProvider.toggleMic(config: settingsProvider.getMicConfig());
} catch (e) {
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: SelectableText('Mic error: $e')),
);
}
}
}
Future<void> _handleToggleSystem(BuildContext context) async {
final captureProvider = context.read<AudioCaptureProvider>();
final settingsProvider = context.read<SettingsProvider>();
try {
await captureProvider.toggleSystem(
config: settingsProvider.getSystemConfig());
} catch (e) {
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: SelectableText('System audio error: $e')),
);
}
}
}
Future<void> _showInputDevicesDialog(BuildContext context) async {
final captureProvider = context.read<AudioCaptureProvider>();
final micCapture = captureProvider.micCapture;
// Show loading
if (!context.mounted) return;
final navigator = Navigator.of(context);
showDialog(
context: context,
barrierDismissible: false,
builder: (context) => const Center(child: CircularProgressIndicator()),
);
try {
// Check if device is available
final hasDevice = await micCapture.hasInputDevice();
// Get available devices
final devices = await micCapture.getAvailableInputDevices();
// Close loading dialog
if (context.mounted && navigator.canPop()) {
navigator.pop();
}
// Show devices dialog
if (context.mounted) {
_showDevicesDialog(context, hasDevice, devices);
}
} catch (e) {
if (context.mounted && navigator.canPop()) {
navigator.pop(); // Close loading
}
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: SelectableText('Error: $e')),
);
}
}
}
void _showDevicesDialog(
BuildContext context,
bool hasDevice,
List<InputDevice> devices,
) {
showDialog(
context: context,
builder: (context) => AlertDialog(
title: const Text('Available Input Devices'),
content: SizedBox(
width: double.maxFinite,
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Has Input Device: ${hasDevice ? "Yes" : "No"}',
style: const TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(height: 16),
if (devices.isEmpty)
const Text('No devices found')
else
Flexible(
child: ListView.builder(
shrinkWrap: true,
itemCount: devices.length,
itemBuilder: (context, index) {
final device = devices[index];
return Card(
margin: const EdgeInsets.only(bottom: 8),
child: ListTile(
leading: Icon(
device.type == InputDeviceType.bluetooth
? Icons.bluetooth
: device.type == InputDeviceType.builtIn
? Icons.phone_android
: Icons.usb,
),
title: Text(
device.name,
style: TextStyle(
fontWeight: device.isDefault
? FontWeight.bold
: FontWeight.normal,
),
),
subtitle: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text('Type: ${device.type}'),
Text('Channels: ${device.channelCount}'),
if (device.isDefault)
const Text(
'Default Device',
style: TextStyle(
color: Colors.green,
fontWeight: FontWeight.bold,
),
),
],
),
isThreeLine: true,
),
);
},
),
),
],
),
),
actions: [
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: const Text('Close'),
),
],
),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Audio Capture'),
actions: [
IconButton(
icon: const Icon(Icons.settings),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => const SettingsPage(),
),
);
},
),
],
),
body: Consumer<AudioCaptureProvider>(
builder: (context, provider, child) {
return SingleChildScrollView(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
// Mic Audio Card
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
const Icon(Icons.mic, size: 32),
const SizedBox(width: 12),
const Expanded(
child: Text(
'Microphone',
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
),
),
),
Switch(
value: provider.micActive,
onChanged: (_) => _handleToggleMic(context),
),
],
),
const SizedBox(height: 8),
Text(
provider.micActive
? (provider.micDeviceName != null
? 'Device: ${provider.micDeviceName}'
: 'Status: Active')
: 'Status: Inactive',
style: TextStyle(
color:
provider.micActive ? Colors.green : Colors.grey,
fontSize: 14,
),
),
const SizedBox(height: 8),
OutlinedButton.icon(
icon: const Icon(Icons.devices, size: 18),
label: const Text('View Available Devices'),
onPressed: () => _showInputDevicesDialog(context),
),
],
),
),
),
// Mic Decibel Display
const SizedBox(height: 8),
DecibelDisplay(
decibel: provider.micDecibel,
label: 'Microphone Decibel',
isActive: provider.micActive,
),
// Mic Audio Data Display
if (provider.micActive) ...[
const SizedBox(height: 8),
Consumer<SettingsProvider>(
builder: (context, settings, _) {
return AudioDataDisplay(
audioStream: provider.micAudioStream,
label: 'Microphone',
sampleRate: settings.micSampleRate,
channels: settings.micChannels,
);
},
),
],
const SizedBox(height: 16),
// System Audio Card
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
const Icon(Icons.speaker, size: 32),
const SizedBox(width: 12),
const Expanded(
child: Text(
'System Audio',
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
),
),
),
Switch(
value: provider.systemActive,
onChanged: (_) => _handleToggleSystem(context),
),
],
),
const SizedBox(height: 8),
Text(
provider.systemActive
? 'Status: Active'
: 'Status: Inactive',
style: TextStyle(
color: provider.systemActive
? Colors.green
: Colors.grey,
fontSize: 14,
),
),
],
),
),
),
// System Decibel Display
const SizedBox(height: 8),
DecibelDisplay(
decibel: provider.systemDecibel,
label: 'System Audio Decibel',
isActive: provider.systemActive,
),
// System Audio Data Display
if (provider.systemActive) ...[
const SizedBox(height: 8),
Consumer<SettingsProvider>(
builder: (context, settings, _) {
return AudioDataDisplay(
audioStream: provider.systemAudioStream,
label: 'System Audio',
sampleRate: settings.systemSampleRate,
channels: settings.systemChannels,
);
},
),
],
const SizedBox(height: 24),
// Info
Card(
color: Colors.blue.shade50,
child: const Padding(
padding: EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Info',
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
),
),
SizedBox(height: 8),
Text(
'• You can enable both microphone and system audio simultaneously',
style: TextStyle(fontSize: 12),
),
Text(
'• Tap the settings icon to configure audio parameters',
style: TextStyle(fontSize: 12),
),
],
),
),
),
],
),
);
},
),
);
}
}
class SettingsPage extends StatelessWidget {
const SettingsPage({super.key});
@override
Widget build(BuildContext context) {
return DefaultTabController(
length: 2,
child: Scaffold(
appBar: AppBar(
title: const Text('Settings'),
bottom: const TabBar(
tabs: [
Tab(text: 'Microphone'),
Tab(text: 'System Audio'),
],
),
),
body: const TabBarView(
children: [
MicSettingsTab(),
SystemSettingsTab(),
],
),
),
);
}
}
class MicSettingsTab extends StatelessWidget {
const MicSettingsTab({super.key});
@override
Widget build(BuildContext context) {
final settingsProvider = context.watch<SettingsProvider>();
final captureProvider = context.read<AudioCaptureProvider>();
return ListView(
padding: const EdgeInsets.all(16.0),
children: [
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Sample Rate (Hz)',
style: TextStyle(fontWeight: FontWeight.bold),
),
Slider(
value: settingsProvider.micSampleRate.toDouble(),
min: 8000,
max: 48000,
divisions: 8,
label: '${settingsProvider.micSampleRate} Hz',
onChanged: (value) {
settingsProvider.setMicSampleRate(value.toInt());
},
),
Text('Current: ${settingsProvider.micSampleRate} Hz'),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Channels',
style: TextStyle(fontWeight: FontWeight.bold),
),
Slider(
value: settingsProvider.micChannels.toDouble(),
min: 1,
max: 2,
divisions: 1,
label: settingsProvider.micChannels == 1 ? 'Mono' : 'Stereo',
onChanged: (value) {
settingsProvider.setMicChannels(value.toInt());
},
),
Text(
'Current: ${settingsProvider.micChannels == 1 ? "Mono" : "Stereo"}'),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Gain Boost',
style: TextStyle(fontWeight: FontWeight.bold),
),
Slider(
value: settingsProvider.micGainBoost,
min: 0.1,
max: 10.0,
divisions: 99,
label: settingsProvider.micGainBoost.toStringAsFixed(1),
onChanged: (value) {
settingsProvider.setMicGainBoost(value);
},
),
Text(
'Current: ${settingsProvider.micGainBoost.toStringAsFixed(1)}x'),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Input Volume',
style: TextStyle(fontWeight: FontWeight.bold),
),
Slider(
value: settingsProvider.micInputVolume,
min: 0.0,
max: 1.0,
divisions: 100,
label: settingsProvider.micInputVolume.toStringAsFixed(2),
onChanged: (value) {
settingsProvider.setMicInputVolume(value);
},
),
Text(
'Current: ${(settingsProvider.micInputVolume * 100).toStringAsFixed(0)}%'),
],
),
),
),
const SizedBox(height: 24),
ElevatedButton(
onPressed: () {
captureProvider.micCapture
.updateConfig(settingsProvider.getMicConfig());
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(content: Text('Mic settings saved')),
);
},
child: const Text('Save Settings'),
),
],
);
}
}
class SystemSettingsTab extends StatelessWidget {
const SystemSettingsTab({super.key});
@override
Widget build(BuildContext context) {
final settingsProvider = context.watch<SettingsProvider>();
final captureProvider = context.read<AudioCaptureProvider>();
return ListView(
padding: const EdgeInsets.all(16.0),
children: [
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Sample Rate (Hz)',
style: TextStyle(fontWeight: FontWeight.bold),
),
Slider(
value: settingsProvider.systemSampleRate.toDouble(),
min: 8000,
max: 48000,
divisions: 8,
label: '${settingsProvider.systemSampleRate} Hz',
onChanged: (value) {
settingsProvider.setSystemSampleRate(value.toInt());
},
),
Text('Current: ${settingsProvider.systemSampleRate} Hz'),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Channels',
style: TextStyle(fontWeight: FontWeight.bold),
),
Slider(
value: settingsProvider.systemChannels.toDouble(),
min: 1,
max: 2,
divisions: 1,
label:
settingsProvider.systemChannels == 1 ? 'Mono' : 'Stereo',
onChanged: (value) {
settingsProvider.setSystemChannels(value.toInt());
},
),
Text(
'Current: ${settingsProvider.systemChannels == 1 ? "Mono" : "Stereo"}'),
],
),
),
),
const SizedBox(height: 24),
ElevatedButton(
onPressed: () {
captureProvider.systemCapture
.updateConfig(settingsProvider.getSystemConfig());
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(content: Text('System audio settings saved')),
);
},
child: const Text('Save Settings'),
),
],
);
}
}Metadata
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likes
160
points
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downloads
Publisher
unverified uploader
Weekly Downloads
Metadata
Flutter plugin for capturing audio on desktop platforms (macOS, Linux, Windows). Supports microphone and system audio with streaming, decibel monitoring, and device management.
Repository (GitHub)
View/report issues
Documentation
License
MIT (license)
Dependencies
flutter, plugin_platform_interface
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