Source code for detectspeakers.cs

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using System;
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using System.Collections.Generic;
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namespace RobvanderWoude
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{
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	internal class DetectSpeakers
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	{
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		static readonly string progver = "1.00";

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		static int Main( string[] args )
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		{
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			if ( args.Length > 0 )
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			{
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				return ShowHelp( );
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			}
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			try
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			{
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				int count = NAudio.Wave.WaveOut.DeviceCount;

				Console.WriteLine( "{0} Audio output device{1} detected", count, ( count == 1 ? "" : "s" ) );

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				NAudio.CoreAudioApi.MMDeviceEnumerator MMDE = new NAudio.CoreAudioApi.MMDeviceEnumerator( );

				NAudio.CoreAudioApi.MMDeviceCollection devices = MMDE.EnumerateAudioEndPoints( NAudio.CoreAudioApi.DataFlow.All, NAudio.CoreAudioApi.DeviceState.Active );

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				if ( devices.Count == 1 )
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				{
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					Console.WriteLine( "Active device: {0}", devices[0].DeviceFriendlyName );

					Console.WriteLine( "Master volume: {0}", devices[0].AudioEndpointVolume.MasterVolumeLevel );

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				}
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				else if ( devices.Count > 1 )
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				{
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					Console.WriteLine( "Active devices' master volume:" );

					foreach ( NAudio.CoreAudioApi.MMDevice device in devices )

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						Console.WriteLine( "{0}: {1}", device.DeviceFriendlyName, device.AudioEndpointVolume.MasterVolumeLevel );

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					}
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				}
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				return count;
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			}
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			catch ( Exception e )
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			{
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				return ShowHelp( e.Message );
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			}
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		}
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		#region Error handling
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		static int ShowHelp( params string[] errmsg )

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		{
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			#region Error Message
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			if ( errmsg.Length > 0 )
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			{
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				List<string> errargs = new List<string>( errmsg );

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				errargs.RemoveAt( 0 );
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				Console.Error.WriteLine( );
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				Console.ForegroundColor = ConsoleColor.Red;

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				Console.Error.Write( "ERROR:\t" );
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				Console.ForegroundColor = ConsoleColor.White;

				Console.Error.WriteLine( errmsg[0], errargs.ToArray( ) );

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				Console.ResetColor( );
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			}
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			#endregion Error Message
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			#region Help Text
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			/*
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			DetectSpeakers.exe,  Version 1.00
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			Check if speakers or headphones are connected

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			Usage:    DetectSpeakers.exe
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			Notes:    Return code ("errorlevel") equals the number of active

			          audio output devices detected, or -1 in case of errors.

			          This program uses NAudio by Mark Heath et al.

			          NAudio files required (in this program's parent folder) are

			          NAudio.Core.dll, NAudio.Wasapi.dll, NAudio.WinForms.dll and

			          NAudio.WinMM.dll, all included in this program's ZIP file.

			          Consider this program experimental: it had only limited

			          testing, due mainly to my computer's limited audio hardware.

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			Credits:  NAudio library for .NET by Mark Heath et al

			          https://github.com/naudio/NAudio

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			Written by Rob van der Woude
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			https://www.robvanderwoude.com
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			*/
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			#endregion Help Text
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			#region Display Help Text
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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "DetectSpeakers.exe,  Version {0}", progver );

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			Console.Error.WriteLine( "Check if speakers or headphones are connected" );

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			Console.Error.WriteLine( );
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			Console.Error.Write( "Usage:    " );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "DetectSpeakers.exe" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "Notes:    Return code (\"errorlevel\") equals the number of active" );

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			Console.Error.WriteLine( "          audio output devices detected, or -1 in case of errors." );

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			Console.Error.WriteLine( "          This program uses NAudio by Mark Heath et al." );

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			Console.Error.WriteLine( "          NAudio files required (in this program's parent folder) are" );

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			Console.Error.WriteLine( "          NAudio.Core.dll, NAudio.Wasapi.dll, NAudio.WinForms.dll and" );

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			Console.Error.WriteLine( "          NAudio.WinMM.dll, all included in this program's ZIP file." );

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			Console.Error.WriteLine( "          Consider this program experimental: it had only limited" );

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			Console.Error.WriteLine( "          testing, due mainly to my computer's limited audio hardware." );

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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "Credits:  NAudio library for .NET by Mark Heath et al" );

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			Console.ForegroundColor = ConsoleColor.DarkGray;

			Console.Error.WriteLine( "          https://github.com/naudio/NAudio" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "Written by Rob van der Woude" );

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			Console.Error.WriteLine( "https://www.robvanderwoude.com" );

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			#endregion Display Help Text
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			return -1;
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		}
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		#endregion Error handling
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	}
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}
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