win32audio

A library to get Audio Devices on Windows.

Also you can get volume and set Master volume or individual application volume

Also includes a utilitary function nativeIconToBytes that can be used for other purposes rather than audio device.

How to use

Enumerate Devices

Audio Devices

  var audioDevices = <AudioDevice>[];

    audioDevices = await Audio.enumDevices(audioDeviceType) ?? [];

Audio Mixer

  var mixerList = <ProcessVolume>[];

  mixerList = await Audio.enumAudioMixer() ?? [];

Default Device

Get

  var defaultDevice = AudioDevice();
  
  defaultDevice = (await Audio.getDefaultDevice(audioDeviceType))!;

Set

id is COM string

await Audio.setDefaultDevice(audioDevices[0].id, {bool console = false, bool multimedia = true, bool communications = false});

Switch to next Audio Device

    await Audio.switchDefaultDevice(audioDeviceType, {bool console = false, bool multimedia = true, bool communications = false});

Volume

Volume is double between 0 and 1.

Get

    final volume = await Audio.getVolume(audioDeviceType);

Set

    final volume = await Audio.setVolume(0.5,audioDeviceType);

Set Specific app volume:

    await Audio.setAudioMixerVolume(mixerList[0].processId, 0.3);

Structs/Enums

class AudioDevice {
  String id = "";
  String name = "";
  String iconPath = "";
  int iconID = 0;
  bool isActive = false;
}

class ProcessVolume {
  int processId = 0;
  String processPath = "";
  double maxVolume = 1.0;
  double peakVolume = 0.0;
}

enum AudioDeviceType {
  output,
  input,
}

Extra Function

nativeIconToBytes extracts icon either from EXE file or dll file and store it as UInt8List

    Map<String, Uint8List?> _audioIcons = {};
    _audioIcons = {};
    for (var audioDevice in audioDevices) {
      if (_audioIcons[audioDevice.id] == null) {
        _audioIcons[audioDevice.id] = await nativeIconToBytes(audioDevice.iconPath, iconID: audioDevice.iconID);
      }
    }
///....
widget: (_audioIcons.containsKey(audioDevices[index].id))
                            ? Image.memory(
                                _audioIcons[audioDevices[index].id] ?? Uint8List(0),
                                width: 32,
                                height: 32,
                              )
                            : const Icon(Icons.spoke_outlined),

In the same way I've made a class WinIcons() with these functions:

extractFileIcon that extract an asociated icon from any file.

extractWindowIcon which extracts an icon from HWND/ Window Handle

extractIconHandle which extracts an icon from HICON/ Icon Handle.