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EonaCat.VolumeMixer
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Initial version

This commit is contained in:
EonaCat 2025-07-17 21:29:06 +02:00
parent adda8786f8
commit 0181b0c3b8
31 changed files with 2056 additions and 123 deletions
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91
.gitignore vendored
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@ -2,7 +2,7 @@
## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
*.rsuser
@ -14,9 +14,6 @@
# User-specific files (MonoDevelop/Xamarin Studio)
*.userprefs
# Mono auto generated files
mono_crash.*
# Build results
[Dd]ebug/
[Dd]ebugPublic/
@ -24,14 +21,10 @@ mono_crash.*
[Rr]eleases/
x64/
x86/
[Ww][Ii][Nn]32/
[Aa][Rr][Mm]/
[Aa][Rr][Mm]64/
bld/
[Bb]in/
[Oo]bj/
[Ll]og/
[Ll]ogs/
# Visual Studio 2015/2017 cache/options directory
.vs/
@ -45,10 +38,9 @@ Generated\ Files/
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
# NUnit
# NUNIT
*.VisualState.xml
TestResult.xml
nunit-*.xml
# Build Results of an ATL Project
[Dd]ebugPS/
@ -63,9 +55,6 @@ project.lock.json
project.fragment.lock.json
artifacts/
# ASP.NET Scaffolding
ScaffoldingReadMe.txt
# StyleCop
StyleCopReport.xml
@ -91,7 +80,6 @@ StyleCopReport.xml
*.tmp_proj
*_wpftmp.csproj
*.log
*.tlog
*.vspscc
*.vssscc
.builds
@ -133,6 +121,9 @@ _ReSharper*/
*.[Rr]e[Ss]harper
*.DotSettings.user
# JustCode is a .NET coding add-in
.JustCode
# TeamCity is a build add-in
_TeamCity*
@ -143,11 +134,6 @@ _TeamCity*
.axoCover/*
!.axoCover/settings.json
# Coverlet is a free, cross platform Code Coverage Tool
coverage*.json
coverage*.xml
coverage*.info
# Visual Studio code coverage results
*.coverage
*.coveragexml
@ -195,8 +181,6 @@ PublishScripts/
# NuGet Packages
*.nupkg
# NuGet Symbol Packages
*.snupkg
# The packages folder can be ignored because of Package Restore
**/[Pp]ackages/*
# except build/, which is used as an MSBuild target.
@ -221,14 +205,12 @@ BundleArtifacts/
Package.StoreAssociation.xml
_pkginfo.txt
*.appx
*.appxbundle
*.appxupload
# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!?*.[Cc]ache/
!*.[Cc]ache/
# Others
ClientBin/
@ -272,9 +254,6 @@ ServiceFabricBackup/
*.bim.layout
*.bim_*.settings
*.rptproj.rsuser
*- [Bb]ackup.rdl
*- [Bb]ackup ([0-9]).rdl
*- [Bb]ackup ([0-9][0-9]).rdl
# Microsoft Fakes
FakesAssemblies/
@ -295,17 +274,6 @@ node_modules/
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
*.vbw
# Visual Studio 6 auto-generated project file (contains which files were open etc.)
*.vbp
# Visual Studio 6 workspace and project file (working project files containing files to include in project)
*.dsw
*.dsp
# Visual Studio 6 technical files
*.ncb
*.aps
# Visual Studio LightSwitch build output
**/*.HTMLClient/GeneratedArtifacts
**/*.DesktopClient/GeneratedArtifacts
@ -321,6 +289,10 @@ paket-files/
# FAKE - F# Make
.fake/
# JetBrains Rider
.idea/
*.sln.iml
# CodeRush personal settings
.cr/personal
@ -362,53 +334,10 @@ ASALocalRun/
# Local History for Visual Studio
.localhistory/
# Visual Studio History (VSHistory) files
.vshistory/
# BeatPulse healthcheck temp database
healthchecksdb
# Backup folder for Package Reference Convert tool in Visual Studio 2017
MigrationBackup/
# Ionide (cross platform F# VS Code tools) working folder
.ionide/
# Fody - auto-generated XML schema
FodyWeavers.xsd
# VS Code files for those working on multiple tools
.vscode/*
!.vscode/settings.json
!.vscode/tasks.json
!.vscode/launch.json
!.vscode/extensions.json
*.code-workspace
# Local History for Visual Studio Code
.history/
# Windows Installer files from build outputs
*.cab
*.msi
*.msix
*.msm
*.msp
# JetBrains Rider
*.sln.iml
# ---> VisualStudioCode
.vscode/*
!.vscode/settings.json
!.vscode/tasks.json
!.vscode/launch.json
!.vscode/extensions.json
!.vscode/*.code-snippets
# Local History for Visual Studio Code
.history/
# Built Visual Studio Code Extensions
*.vsix

9
EonaCat.VolumeMixer.Tester/EonaCat.VolumeMixer.Tester.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\EonaCat.VolumeMixer\EonaCat.VolumeMixer.csproj" />
</ItemGroup>
</Project>

170
EonaCat.VolumeMixer.Tester/Program.cs Normal file
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using EonaCat.VolumeMixer.Managers;
using EonaCat.VolumeMixer.Models;
using System;
using System.Threading.Tasks;
class Program
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[STAThread]
static async Task Main()
{
// Playback management example
using (var volumeMixer = new VolumeMixerManager())
{
try
{
// Get all audio PLAYBACK devices
var devices = await volumeMixer.GetAudioDevicesAsync(DataFlow.Output);
Console.WriteLine($"Found {devices.Count} playback devices:");
foreach (var device in devices)
{
Console.WriteLine($"- {device.Name} (Default: {device.IsDefault})");
Console.WriteLine($" Volume: {await device.GetMasterVolumeAsync():P0}");
Console.WriteLine($" Muted: {await device.GetMasterMuteAsync()}");
device.Dispose();
}
// Default playback device
using (var defaultDevice = await volumeMixer.GetDefaultAudioDeviceAsync(DataFlow.Output))
{
if (defaultDevice != null)
{
Console.WriteLine($"\nDefault playback device: {defaultDevice.Name}");
// Get all audio sessions
var sessions = await defaultDevice.GetAudioSessionsAsync();
Console.WriteLine($"Active sessions: {sessions.Count}");
foreach (var session in sessions)
{
Console.WriteLine($"- {session.DisplayName} ({await session.GetProcessNameAsync()})");
Console.WriteLine($" Volume: {await session.GetVolumeAsync():P0}");
Console.WriteLine($" Muted: {await session.GetMuteAsync()}");
session.Dispose();
}
}
// Example Set volume of default device
if (defaultDevice != null)
{
// Unmute the device if it is muted
if (await defaultDevice.GetMasterMuteAsync())
{
Console.WriteLine("Unmuting default playback device...");
await defaultDevice.SetMasterMuteAsync(false);
}
Console.WriteLine($"\nSetting default playback device volume to 1%");
bool success = await defaultDevice.SetMasterVolumeAsync(0.1f);
// Log the current volume
Console.WriteLine($"Current volume: {await defaultDevice.GetMasterVolumeAsync():P0}");
for (int i = 0; i < 50; i++)
{
if (await defaultDevice.GetMasterVolumeAsync() >= 1f)
{
break;
}
// Increment volume by 2% each step
success = await defaultDevice.StepUpAsync();
Console.WriteLine($"Current step volume: {await defaultDevice.GetMasterVolumeAsync():P0}");
}
if (success)
{
Console.WriteLine("Volume increased by 95% successfully.");
}
else
{
Console.WriteLine("Failed to increase volume.");
}
// Toggle mute
// bool currentMute = await defaultDevice.GetMasterMuteAsync();
// success = await defaultDevice.SetMasterMuteAsync(!currentMute);
// Console.WriteLine($"Mute toggled: {success}");
}
else
{
Console.WriteLine("No default playback device found");
}
}
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}");
}
}
// Microphone management example
using (var micManager = new MicrophoneManager())
{
try
{
// Get all microphones
var microphones = await micManager.GetMicrophonesAsync();
Console.WriteLine($"Found {microphones.Count} microphones:");
foreach (var mic in microphones)
{
Console.WriteLine($"- {mic.Name} (Default: {mic.IsDefault})");
Console.WriteLine($" Volume: {await mic.GetMasterVolumeAsync():P0}");
Console.WriteLine($" Muted: {await mic.GetMasterMuteAsync()}");
mic.Dispose();
}
// Default microphone
using (var defaultMic = await micManager.GetDefaultMicrophoneAsync())
{
Console.WriteLine($"\nSetting default microphone volume to 1%");
bool success = await defaultMic.SetMasterVolumeAsync(0.1f);
// Log the current volume
Console.WriteLine($"Current volume: {await defaultMic.GetMasterVolumeAsync():P0}");
for (int i = 0; i < 50; i++)
{
if (await defaultMic.GetMasterVolumeAsync() >= 1f)
{
break;
}
// Increment volume by 2% each step
success = await defaultMic.StepUpAsync();
Console.WriteLine($"Current step volume: {await defaultMic.GetMasterVolumeAsync():P0}");
}
if (success)
{
Console.WriteLine("Volume increased by 95% successfully.");
}
else
{
Console.WriteLine("Failed to increase volume.");
}
}
Console.WriteLine($"Default mic volume: {await micManager.GetMicrophoneVolumeAsync():P0}");
Console.WriteLine($"Default mic muted: {await micManager.GetMicrophoneMuteAsync()}");
// Set microphone volume to 60%
bool result = await micManager.SetMicrophoneVolumeAsync(0.6f);
Console.WriteLine($"Set microphone volume to 60%: {result}");
// Set specific microphone by name
result = await micManager.SetMicrophoneVolumeByNameAsync("USB", 0.7f);
Console.WriteLine($"Set USB microphone volume to 70%: {result}");
}
catch (Exception exception)
{
Console.WriteLine($"Error: {exception.Message}");
}
}
}
}

31
EonaCat.VolumeMixer.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.0.31903.59
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "EonaCat.VolumeMixer", "EonaCat.VolumeMixer\EonaCat.VolumeMixer.csproj", "{11B9181D-7186-4D81-A5D3-4804E9A61BA6}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EonaCat.VolumeMixer.Tester", "EonaCat.VolumeMixer.Tester\EonaCat.VolumeMixer.Tester.csproj", "{9156F465-62F7-BA83-40E6-F4FD7F0AA6A2}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Debug|Any CPU.Build.0 = Debug|Any CPU
{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Release|Any CPU.ActiveCfg = Release|Any CPU
{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Release|Any CPU.Build.0 = Release|Any CPU
{9156F465-62F7-BA83-40E6-F4FD7F0AA6A2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{9156F465-62F7-BA83-40E6-F4FD7F0AA6A2}.Debug|Any CPU.Build.0 = Debug|Any CPU
{9156F465-62F7-BA83-40E6-F4FD7F0AA6A2}.Release|Any CPU.ActiveCfg = Release|Any CPU
{9156F465-62F7-BA83-40E6-F4FD7F0AA6A2}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {B839F1D9-578B-4D9F-A8E5-43763F9B1C57}
EndGlobalSection
EndGlobal

52
EonaCat.VolumeMixer/EonaCat.VolumeMixer.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<LangVersion>Latest</LangVersion>
<TargetFrameworks>
net47;
netstandard2.0;
netstandard2.1;
net6.0;
net8.0;
</TargetFrameworks>
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
<PackageId>EonaCat.VolumeMixer</PackageId>
<Authors>EonaCat (Jeroen Saey)</Authors>
<Company>EonaCat (Jeroen Saey)</Company>
<Product>EonaCat.VolumeMixer</Product>
<Copyright>EonaCat (Jeroen Saey)</Copyright>
<PackageProjectUrl>https://www.nuget.org/packages/EonaCat.VolumeMixer/</PackageProjectUrl>
<PackageTags>EonaCat, Audio, Volume, Mixer .NET Standard, Jeroen, Saey</PackageTags>
<PackageReleaseNotes></PackageReleaseNotes>
<Description>EonaCat VolumeMixer</Description>
<Version>1.0.0</Version>
<AssemblyVersion>1.0.0.0</AssemblyVersion>
<FileVersion>1.0.0.0</FileVersion>
<PackageIcon>icon.png</PackageIcon>
</PropertyGroup>
<PropertyGroup>
<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
<GenerateDocumentationFile>True</GenerateDocumentationFile>
<PackageReadmeFile>README.md</PackageReadmeFile>
<SignAssembly>False</SignAssembly>
<Title>EonaCat.VolumeMixer</Title>
<PackageRequireLicenseAcceptance>True</PackageRequireLicenseAcceptance>
<PackageLicenseFile>LICENSE</PackageLicenseFile>
</PropertyGroup>
<ItemGroup>
<None Include="..\icon.png">
<Pack>True</Pack>
<PackagePath>\</PackagePath>
</None>
<None Include="..\LICENSE">
<Pack>True</Pack>
<PackagePath>\</PackagePath>
</None>
<None Include="..\README.md">
<Pack>True</Pack>
<PackagePath>\</PackagePath>
</None>
</ItemGroup>
</Project>

42
EonaCat.VolumeMixer/Helpers/ComHelper.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Helpers
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal static class ComHelper
{
public static T GetInterface<T>(IntPtr ptr) where T : class
{
if (ptr == IntPtr.Zero)
{
return null;
}
try
{
return Marshal.GetObjectForIUnknown(ptr) as T;
}
catch
{
return null;
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.Release(ptr);
}
}
}
public static void ReleaseComObject(object obj)
{
if (obj != null && Marshal.IsComObject(obj))
{
Marshal.ReleaseComObject(obj);
}
}
}
}

32
EonaCat.VolumeMixer/Interfaces/IAudioEndpointVolume.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("5CDF2C82-841E-4546-9722-0CF74078229A")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioEndpointVolume
{
int RegisterControlChangeNotify(IntPtr pNotify);
int UnregisterControlChangeNotify(IntPtr pNotify);
int GetChannelCount(out uint pnChannelCount);
int SetMasterVolumeLevel(float fLevelDB, ref Guid pguidEventContext);
int SetMasterVolumeLevelScalar(float fLevel, ref Guid pguidEventContext);
int GetMasterVolumeLevel(out float pfLevelDB);
int GetMasterVolumeLevelScalar(out float pfLevel);
int SetChannelVolumeLevel(uint nChannel, float fLevelDB, ref Guid pguidEventContext);
int SetChannelVolumeLevelScalar(uint nChannel, float fLevel, ref Guid pguidEventContext);
int GetChannelVolumeLevel(uint nChannel, out float pfLevelDB);
int GetChannelVolumeLevelScalar(uint nChannel, out float pfLevel);
int SetMute([MarshalAs(UnmanagedType.Bool)] bool bMute, ref Guid pguidEventContext);
int GetMute([MarshalAs(UnmanagedType.Bool)] out bool pbMute);
int GetVolumeStepInfo(out uint pnStep, out uint pnStepCount);
int StepUp(ref Guid pguidEventContext);
int StepDown(ref Guid pguidEventContext);
int QueryHardwareSupport(out uint pdwHardwareSupportMask);
int GetVolumeRange(out float pflVolumeMindB, out float pflVolumeMaxdB, out float pflVolumeIncrementdB);
}
}

24
EonaCat.VolumeMixer/Interfaces/IAudioSessionControl.cs Normal file
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using EonaCat.VolumeMixer.Models;
using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("F4B1A599-7266-4319-A8CA-E70ACB11E8CD")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionControl
{
int GetState(out AudioSessionState pRetVal);
int GetDisplayName([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
int SetDisplayName([MarshalAs(UnmanagedType.LPWStr)] string Value, ref Guid EventContext);
int GetIconPath([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
int SetIconPath([MarshalAs(UnmanagedType.LPWStr)] string Value, ref Guid EventContext);
int GetGroupingParam(out Guid pRetVal);
int SetGroupingParam(ref Guid Override, ref Guid EventContext);
int RegisterAudioSessionNotification(IntPtr NewNotifications);
int UnregisterAudioSessionNotification(IntPtr NewNotifications);
}
}

31
EonaCat.VolumeMixer/Interfaces/IAudioSessionControlExtended.cs Normal file
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using EonaCat.VolumeMixer.Models;
using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("BFB7FF88-7239-4FC9-8FA2-07C950BE9C6D")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionControlExtended : IAudioSessionControl
{
new int GetState(out AudioSessionState pRetVal);
new int GetDisplayName([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
new int SetDisplayName([MarshalAs(UnmanagedType.LPWStr)] string Value, ref Guid EventContext);
new int GetIconPath([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
new int SetIconPath([MarshalAs(UnmanagedType.LPWStr)] string Value, ref Guid EventContext);
new int GetGroupingParam(out Guid pRetVal);
new int SetGroupingParam(ref Guid Override, ref Guid EventContext);
new int RegisterAudioSessionNotification(IntPtr NewNotifications);
new int UnregisterAudioSessionNotification(IntPtr NewNotifications);
// IAudioSessionControl2 specific methods
int GetSessionIdentifier([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
int GetSessionInstanceIdentifier([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
int GetProcessId(out uint pRetVal);
int IsSystemSoundsSession();
int SetDuckingPreference([MarshalAs(UnmanagedType.Bool)] bool optOut);
}
}

16
EonaCat.VolumeMixer/Interfaces/IAudioSessionEnumerator.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("E2F5BB11-0570-40CA-ACDD-3AA01277DEE8")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionEnumerator
{
int GetCount(out int SessionCount);
int GetSession(int SessionNumber, out IAudioSessionControlExtended Session);
}
}

21
EonaCat.VolumeMixer/Interfaces/IAudioSessionManager.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionManager
{
int GetAudioSessionControl(ref Guid AudioSessionGuid, uint StreamFlags, out IntPtr SessionControl);
int GetAudioVolume(ref Guid AudioSessionGuid, uint StreamFlags, out IntPtr AudioVolume);
int GetSessionEnumerator(out IAudioSessionEnumerator SessionEnum);
int RegisterSessionNotification(IntPtr SessionNotification);
int UnregisterSessionNotification(IntPtr SessionNotification);
int RegisterDuckNotification([MarshalAs(UnmanagedType.LPWStr)] string sessionID, IntPtr duckNotification);
int UnregisterDuckNotification(IntPtr duckNotification);
}
}

18
EonaCat.VolumeMixer/Interfaces/IAudioVolume.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("87CE5498-68D6-44E5-9215-6DA47EF883D8")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioVolume
{
int SetMasterVolume(float fLevel, ref Guid EventContext);
int GetMasterVolume(out float pfLevel);
int SetMute([MarshalAs(UnmanagedType.Bool)] bool bMute, ref Guid EventContext);
int GetMute([MarshalAs(UnmanagedType.Bool)] out bool pbMute);
}
}

19
EonaCat.VolumeMixer/Interfaces/IMultiMediaDevice.cs Normal file
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using EonaCat.VolumeMixer.Models;
using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("D666063F-1587-4E43-81F1-B948E807363F")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IMultiMediaDevice
{
int Activate(ref Guid iid, uint dwClsCtx, IntPtr pActivationParams, out IntPtr ppInterface);
int OpenPropertyStore(uint stgmAccess, out IPropertyStore ppProperties);
int GetId([MarshalAs(UnmanagedType.LPWStr)] out string ppstrId);
int GetState(out DeviceState pdwState);
}
}

16
EonaCat.VolumeMixer/Interfaces/IMultiMediaDeviceCollection.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("0BD7A1BE-7A1A-44DB-8397-CC5392387B5E")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IMultiMediaDeviceCollection
{
int GetCount(out uint pcDevices);
int Item(uint nDevice, out IMultiMediaDevice ppDevice);
}
}

20
EonaCat.VolumeMixer/Interfaces/IMultiMediaDeviceEnumerator.cs Normal file
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using EonaCat.VolumeMixer.Models;
using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IMultiMediaDeviceEnumerator
{
int EnumAudioEndpoints(DataFlow dataFlow, DeviceState dwStateMask, out IMultiMediaDeviceCollection ppDevices);
int GetDefaultAudioEndpoint(DataFlow dataFlow, Role role, out IMultiMediaDevice ppEndpoint);
int GetDevice([MarshalAs(UnmanagedType.LPWStr)] string pwstrId, out IMultiMediaDevice ppDevice);
int RegisterEndpointNotificationCallback(IntPtr pClient);
int UnregisterEndpointNotificationCallback(IntPtr pClient);
}
}

20
EonaCat.VolumeMixer/Interfaces/IPropertyStore.cs Normal file
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using EonaCat.VolumeMixer.Models;
using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Interfaces
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPropertyStore
{
int GetCount(out uint cProps);
int GetAt(uint iProp, out PropertyKey pkey);
int GetValue(ref PropertyKey key, out PropVariant pv);
int SetValue(ref PropertyKey key, ref PropVariant propvar);
int Commit();
}
}

146
EonaCat.VolumeMixer/Managers/MicrophoneManager.cs Normal file
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using EonaCat.VolumeMixer.Models;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
namespace EonaCat.VolumeMixer.Managers
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public class MicrophoneManager : IDisposable
{
private readonly VolumeMixerManager _volumeMixer;
private readonly object _syncLock = new();
public MicrophoneManager()
{
_volumeMixer = new VolumeMixerManager();
}
public async Task<List<AudioDevice>> GetMicrophonesAsync()
{
return await _volumeMixer.GetAudioDevicesAsync(DataFlow.Input);
}
public async Task<AudioDevice> GetDefaultMicrophoneAsync()
{
return await _volumeMixer.GetDefaultAudioDeviceAsync(DataFlow.Input);
}
public async Task<bool> SetMicrophoneVolumeAsync(float volume)
{
if (volume < 0f || volume > 1f)
{
return false;
}
AudioDevice defaultMic = await GetDefaultMicrophoneAsync();
if (defaultMic == null)
{
return false;
}
try
{
return await defaultMic.SetMasterVolumeAsync(volume);
}
finally
{
defaultMic.Dispose();
}
}
public async Task<float> GetMicrophoneVolumeAsync()
{
AudioDevice defaultMic = await GetDefaultMicrophoneAsync();
if (defaultMic == null)
{
return 0f;
}
try
{
return await defaultMic.GetMasterVolumeAsync();
}
finally
{
defaultMic.Dispose();
}
}
public async Task<bool> SetMicrophoneMuteAsync(bool mute)
{
AudioDevice defaultMic = await GetDefaultMicrophoneAsync();
if (defaultMic == null)
{
return false;
}
try
{
return await defaultMic.SetMasterMuteAsync(mute);
}
finally
{
defaultMic.Dispose();
}
}
public async Task<bool> GetMicrophoneMuteAsync()
{
AudioDevice defaultMic = await GetDefaultMicrophoneAsync();
if (defaultMic == null)
{
return false;
}
try
{
return await defaultMic.GetMasterMuteAsync();
}
finally
{
defaultMic.Dispose();
}
}
public async Task<bool> SetMicrophoneVolumeByNameAsync(string microphoneName, float volume)
{
if (string.IsNullOrWhiteSpace(microphoneName) || volume < 0f || volume > 1f)
{
return false;
}
List<AudioDevice> microphones = await GetMicrophonesAsync();
foreach (var mic in microphones)
{
try
{
if (mic.Name.IndexOf(microphoneName, StringComparison.OrdinalIgnoreCase) >= 0)
{
return await mic.SetMasterVolumeAsync(volume);
}
}
finally
{
mic.Dispose();
}
}
return false;
}
public void Dispose()
{
lock (_syncLock)
{
_volumeMixer?.Dispose();
}
}
}
}

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EonaCat.VolumeMixer/Managers/VolumeMixerManager.cs Normal file
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using EonaCat.VolumeMixer.Helpers;
using EonaCat.VolumeMixer.Interfaces;
using EonaCat.VolumeMixer.Models;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
namespace EonaCat.VolumeMixer.Managers
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public class VolumeMixerManager : IDisposable
{
private readonly IMultiMediaDeviceEnumerator _deviceEnumerator;
private bool _isDisposed = false;
private readonly object _syncLock = new();
private static readonly PropertyKey PKEY_Device_FriendlyName = new PropertyKey(new Guid("a45c254e-df1c-4efd-8020-67d146a850e0"), 14);
public VolumeMixerManager()
{
try
{
_deviceEnumerator = (IMultiMediaDeviceEnumerator)new MMDeviceEnumerator();
}
catch (Exception ex)
{
throw new InvalidOperationException("Failed to initialize audio device enumerator. Make sure you're running on Windows Vista or later.", ex);
}
}
public async Task<List<AudioDevice>> GetAudioDevicesAsync(DataFlow dataFlow = DataFlow.Output)
{
return await Task.Run(() =>
{
var devices = new List<AudioDevice>();
if (_deviceEnumerator == null)
{
return devices;
}
lock (_syncLock)
{
try
{
var result = _deviceEnumerator.EnumAudioEndpoints(dataFlow, DeviceState.Active, out var deviceCollection);
if (result != 0 || deviceCollection == null)
{
return devices;
}
result = deviceCollection.GetCount(out var count);
if (result != 0)
{
return devices;
}
string defaultId = "";
try
{
result = _deviceEnumerator.GetDefaultAudioEndpoint(dataFlow, Role.Multimedia, out var defaultDevice);
if (result == 0 && defaultDevice != null)
{
defaultDevice.GetId(out defaultId);
ComHelper.ReleaseComObject(defaultDevice);
}
}
catch
{
defaultId = "";
}
for (uint i = 0; i < count; i++)
{
try
{
result = deviceCollection.Item(i, out var device);
if (result == 0 && device != null)
{
result = device.GetId(out var id);
if (result == 0 && !string.IsNullOrEmpty(id))
{
var name = GetDeviceName(device);
bool isDefault = id == defaultId;
devices.Add(new AudioDevice(device, id, name, isDefault, dataFlow));
}
else
{
ComHelper.ReleaseComObject(device);
}
}
}
catch
{
// Skip individual device on error
}
}
ComHelper.ReleaseComObject(deviceCollection);
}
catch
{
// Ignore all and return partial/empty result
}
}
return devices;
});
}
public async Task<AudioDevice> GetDefaultAudioDeviceAsync(DataFlow dataFlow = DataFlow.Output)
{
return await Task.Run(() =>
{
if (_deviceEnumerator == null)
{
return null;
}
lock (_syncLock)
{
try
{
var result = _deviceEnumerator.GetDefaultAudioEndpoint(dataFlow, Role.Multimedia, out var device);
if (result == 0 && device != null)
{
result = device.GetId(out var id);
if (result == 0 && !string.IsNullOrEmpty(id))
{
var name = GetDeviceName(device);
return new AudioDevice(device, id, name, true, dataFlow);
}
ComHelper.ReleaseComObject(device);
}
}
catch
{
// Ignore and return null
}
return null;
}
});
}
private string GetDeviceName(IMultiMediaDevice device)
{
try
{
var result = device.OpenPropertyStore(0, out var propertyStore);
if (result == 0 && propertyStore != null)
{
var propertyKey = PKEY_Device_FriendlyName;
result = propertyStore.GetValue(ref propertyKey, out var propVariant);
if (result == 0 && propVariant.data != IntPtr.Zero)
{
string name = Marshal.PtrToStringUni(propVariant.data);
ComHelper.ReleaseComObject(propertyStore);
return !string.IsNullOrEmpty(name) ? name : "Unknown Device";
}
ComHelper.ReleaseComObject(propertyStore);
}
}
catch
{
// Ignore and fall through
}
return "Unknown Device";
}
public async Task<bool> SetSystemVolumeAsync(float volume)
{
if (volume < 0f || volume > 1f)
{
return false;
}
AudioDevice defaultDevice = await GetDefaultAudioDeviceAsync();
if (defaultDevice == null)
{
return false;
}
try
{
return await defaultDevice.SetMasterVolumeAsync(volume);
}
finally
{
defaultDevice.Dispose();
}
}
public async Task<float> GetSystemVolumeAsync()
{
AudioDevice defaultDevice = await GetDefaultAudioDeviceAsync();
if (defaultDevice == null)
{
return 0f;
}
try
{
return await defaultDevice.GetMasterVolumeAsync();
}
finally
{
defaultDevice.Dispose();
}
}
public async Task<bool> SetSystemMuteAsync(bool mute)
{
AudioDevice defaultDevice = await GetDefaultAudioDeviceAsync();
if (defaultDevice == null)
{
return false;
}
try
{
return await defaultDevice.SetMasterMuteAsync(mute);
}
finally
{
defaultDevice.Dispose();
}
}
public async Task<bool> GetSystemMuteAsync()
{
AudioDevice defaultDevice = await GetDefaultAudioDeviceAsync();
if (defaultDevice == null)
{
return false;
}
try
{
return await defaultDevice.GetMasterMuteAsync();
}
finally
{
defaultDevice.Dispose();
}
}
public async Task<List<AudioSession>> GetAllActiveSessionsAsync()
{
return await Task.Run(async () =>
{
var allSessions = new List<AudioSession>();
List<AudioDevice> devices = await GetAudioDevicesAsync();
foreach (var device in devices)
{
try
{
allSessions.AddRange(await device.GetAudioSessionsAsync());
}
catch
{
// Skip device on error
}
finally
{
device.Dispose();
}
}
return allSessions;
});
}
public void Dispose()
{
lock (_syncLock)
{
if (!_isDisposed)
{
ComHelper.ReleaseComObject(_deviceEnumerator);
_isDisposed = true;
}
}
}
}
}

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EonaCat.VolumeMixer/Models/AudioDevice.cs Normal file
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using EonaCat.VolumeMixer.Helpers;
using EonaCat.VolumeMixer.Interfaces;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public class AudioDevice : IDisposable
{
private readonly IMultiMediaDevice _device;
private IAudioEndpointVolume _endpointVolume;
private IAudioSessionManager _sessionManager;
private bool _isDisposed = false;
private readonly object _syncLock = new object();
public string Id { get; private set; }
public string Name { get; private set; }
public bool IsDefault { get; private set; }
public DataFlow DataFlow { get; private set; }
internal AudioDevice(IMultiMediaDevice device, string id, string name, bool isDefault, DataFlow dataFlow)
{
_device = device;
Id = id;
Name = name;
IsDefault = isDefault;
DataFlow = dataFlow;
InitializeEndpointVolume();
InitializeSessionManager();
}
private void InitializeEndpointVolume()
{
try
{
var audioEndpointGuid = typeof(IAudioEndpointVolume).GUID;
var result = _device.Activate(ref audioEndpointGuid, 0, IntPtr.Zero, out var ptr);
if (result == 0 && ptr != IntPtr.Zero)
{
_endpointVolume = ComHelper.GetInterface<IAudioEndpointVolume>(ptr);
}
}
catch
{
_endpointVolume = null;
}
}
private void InitializeSessionManager()
{
try
{
var audioSessionGuid = typeof(IAudioSessionManager).GUID;
var result = _device.Activate(ref audioSessionGuid, 0, IntPtr.Zero, out var ptr);
if (result == 0 && ptr != IntPtr.Zero)
{
_sessionManager = ComHelper.GetInterface<IAudioSessionManager>(ptr);
}
}
catch
{
_sessionManager = null;
}
}
public async Task<float> GetMasterVolumeAsync()
{
return await Task.Run(() =>
{
lock (_syncLock)
{
if (_isDisposed || _endpointVolume == null)
{
return 0f;
}
try
{
var hr = _endpointVolume.GetMasterVolumeLevelScalar(out var volume);
return hr == 0 ? volume : 0f;
}
catch
{
return 0f;
}
}
});
}
public async Task<bool> SetMasterVolumeAsync(float volume, int maxRetries = 5, int delayMs = 20)
{
for (int attempt = 0; attempt <= maxRetries; attempt++)
{
lock (_syncLock)
{
if (_isDisposed || _endpointVolume == null || volume < 0f || volume > 1f)
{
return false;
}
try
{
var guid = Guid.Empty;
var result = _endpointVolume.SetMasterVolumeLevelScalar(volume, ref guid);
if (result != 0)
{
// Failed to set, will retry
continue;
}
}
catch
{
// Retry on exception
continue;
}
}
await Task.Delay(delayMs);
var currentVolume = await GetMasterVolumeAsync();
if (Math.Abs(currentVolume - volume) < 0.01f)
{
return true;
}
await Task.Delay(delayMs);
}
return false;
}
public async Task<bool> GetMasterMuteAsync()
{
return await Task.Run(() =>
{
lock (_syncLock)
{
if (_isDisposed || _endpointVolume == null)
{
return false;
}
try
{
var result = _endpointVolume.GetMute(out var mute);
return result == 0 ? mute : false;
}
catch
{
return false;
}
}
});
}
public async Task<bool> SetMasterMuteAsync(bool mute)
{
IAudioEndpointVolume endpointVolumeCopy;
lock (_syncLock)
{
if (_isDisposed || _endpointVolume == null)
{
return false;
}
endpointVolumeCopy = _endpointVolume;
}
try
{
var guid = Guid.Empty;
return await Task.Run(() => endpointVolumeCopy.SetMute(mute, ref guid) == 0);
}
catch
{
return false;
}
}
public async Task<List<AudioSession>> GetAudioSessionsAsync()
{
return await Task.Run(() =>
{
lock (_syncLock)
{
var sessions = new List<AudioSession>();
if (_isDisposed || _sessionManager == null)
{
return sessions;
}
try
{
var result = _sessionManager.GetSessionEnumerator(out var sessionEnum);
if (result != 0 || sessionEnum == null)
{
return sessions;
}
result = sessionEnum.GetCount(out var count);
if (result != 0)
{
return sessions;
}
for (int i = 0; i < count; i++)
{
try
{
result = sessionEnum.GetSession(i, out var sessionControl);
if (result == 0 && sessionControl != null)
{
sessions.Add(new AudioSession(sessionControl, _sessionManager));
}
}
catch
{
// Skip on error
}
}
}
catch
{
// Return empty
}
return sessions;
}
});
}
public async Task<bool> StepUpAsync(int delayMs = 20)
{
bool success = false;
lock (_syncLock)
{
if (_isDisposed || _endpointVolume == null)
{
return false;
}
try
{
var guid = Guid.Empty;
var result = _endpointVolume.StepUp(ref guid);
success = result == 0;
}
catch
{
success = false;
}
}
await Task.Delay(delayMs);
return success;
}
public async Task<bool> StepDownAsync(int delayMs = 20)
{
bool success = false;
lock (_syncLock)
{
if (_isDisposed || _endpointVolume == null)
{
return false;
}
try
{
var guid = Guid.Empty;
var result = _endpointVolume.StepDown(ref guid);
success = result == 0;
}
catch
{
success = false;
}
}
await Task.Delay(delayMs);
return success;
}
public void Dispose()
{
lock (_syncLock)
{
if (_isDisposed)
{
return;
}
ComHelper.ReleaseComObject(_endpointVolume);
ComHelper.ReleaseComObject(_sessionManager);
ComHelper.ReleaseComObject(_device);
_isDisposed = true;
}
}
}
}

239
EonaCat.VolumeMixer/Models/AudioSession.cs Normal file
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using EonaCat.VolumeMixer.Helpers;
using EonaCat.VolumeMixer.Interfaces;
using System;
using System.Diagnostics;
using System.Threading.Tasks;
namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public class AudioSession : IDisposable
{
private readonly IAudioSessionControlExtended _sessionControl;
private IAudioVolume _audioVolume;
private bool _isDisposed = false;
private readonly object _syncLock = new object();
public string DisplayName { get; private set; }
public string IconPath { get; private set; }
public uint ProcessId { get; private set; }
public AudioSessionState State { get; private set; }
internal AudioSession(IAudioSessionControlExtended sessionControl, IAudioSessionManager sessionManager)
{
_sessionControl = sessionControl;
LoadSessionInfo();
InitializeVolume(sessionManager);
}
private void InitializeVolume(IAudioSessionManager sessionManager)
{
lock (_syncLock)
{
try
{
var result = _sessionControl.GetGroupingParam(out var guid);
if (result == 0)
{
result = sessionManager.GetAudioVolume(ref guid, 0, out var ptr);
if (result == 0 && ptr != IntPtr.Zero)
{
_audioVolume = ComHelper.GetInterface<IAudioVolume>(ptr);
}
}
}
catch
{
_audioVolume = null;
}
}
}
private void LoadSessionInfo()
{
lock (_syncLock)
{
try
{
var result = _sessionControl.GetDisplayName(out var displayName);
DisplayName = result == 0 && !string.IsNullOrEmpty(displayName) ? displayName : string.Empty;
result = _sessionControl.GetIconPath(out var iconPath);
IconPath = result == 0 ? iconPath ?? "" : "";
result = _sessionControl.GetProcessId(out var processId);
ProcessId = result == 0 ? processId : 0;
result = _sessionControl.GetState(out var state);
State = result == 0 ? state : AudioSessionState.AudioSessionStateInactive;
}
catch
{
DisplayName = string.Empty;
IconPath = string.Empty;
ProcessId = 0;
State = AudioSessionState.AudioSessionStateInactive;
}
}
}
public async Task<float> GetVolumeAsync()
{
return await Task.Run(() =>
{
lock (_syncLock)
{
if (_isDisposed || _audioVolume == null)
{
return 0f;
}
try
{
var result = _audioVolume.GetMasterVolume(out var volume);
return result == 0 ? volume : 0f;
}
catch
{
return 0f;
}
}
});
}
public async Task<bool> SetVolumeAsync(float volume, int maxRetries = 2, int delayMs = 20)
{
if (volume < 0f || volume > 1f)
{
return false;
}
IAudioVolume audioVolCopy;
lock (_syncLock)
{
if (_isDisposed || _audioVolume == null)
{
return false;
}
audioVolCopy = _audioVolume;
}
var guid = Guid.Empty;
for (int attempt = 0; attempt <= maxRetries; attempt++)
{
try
{
var hr = audioVolCopy.SetMasterVolume(volume, ref guid);
if (hr == 0)
{
await Task.Delay(delayMs);
var currentVolume = await GetVolumeAsync();
if (Math.Abs(currentVolume - volume) < 0.01f)
{
return true;
}
}
}
catch
{
// Retry
}
await Task.Delay(delayMs);
}
return false;
}
public async Task<bool> GetMuteAsync()
{
return await Task.Run(() =>
{
lock (_syncLock)
{
if (_isDisposed || _audioVolume == null)
{
return false;
}
try
{
var result = _audioVolume.GetMute(out var mute);
return result == 0 ? mute : false;
}
catch
{
return false;
}
}
});
}
public async Task<bool> SetMuteAsync(bool mute)
{
IAudioVolume audioVolCopy;
lock (_syncLock)
{
if (_isDisposed || _audioVolume == null)
{
return false;
}
audioVolCopy = _audioVolume;
}
try
{
var guid = Guid.Empty;
return await Task.Run(() => audioVolCopy.SetMute(mute, ref guid) == 0);
}
catch
{
return false;
}
}
public async Task<string> GetProcessNameAsync()
{
return await Task.Run(() =>
{
lock (_syncLock)
{
if (ProcessId == 0)
{
return "Unknown";
}
try
{
var process = Process.GetProcessById((int)ProcessId);
return process.ProcessName;
}
catch
{
return "Unknown";
}
}
});
}
public void Dispose()
{
lock (_syncLock)
{
if (_isDisposed)
{
return;
}
ComHelper.ReleaseComObject(_audioVolume);
ComHelper.ReleaseComObject(_sessionControl);
_isDisposed = true;
}
}
}
}

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EonaCat.VolumeMixer/Models/AudioSessionState.cs Normal file
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namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public enum AudioSessionState
{
AudioSessionStateInactive = 0,
AudioSessionStateActive = 1,
AudioSessionStateExpired = 2
}
}

11
EonaCat.VolumeMixer/Models/DataFlow.cs Normal file
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namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
public enum DataFlow
{
Output,
Input,
All
}
}

13
EonaCat.VolumeMixer/Models/DeviceState.cs Normal file
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namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal enum DeviceState : uint
{
Active = 0x00000001,
Disabled = 0x00000002,
NotPresent = 0x00000004,
Unplugged = 0x00000008,
All = 0x0000000F
}
}

13
EonaCat.VolumeMixer/Models/MMDeviceEnumerator.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[ComImport]
[Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")]
internal class MMDeviceEnumerator
{
}
}

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EonaCat.VolumeMixer/Models/PropVariant.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[StructLayout(LayoutKind.Sequential)]
internal struct PropVariant
{
public ushort vt;
public ushort wReserved1;
public ushort wReserved2;
public ushort wReserved3;
public IntPtr data;
}
}

20
EonaCat.VolumeMixer/Models/PropertyKey.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[StructLayout(LayoutKind.Sequential)]
internal struct PropertyKey
{
public Guid fmtid;
public uint pid;
public PropertyKey(Guid fmtid, uint pid)
{
this.fmtid = fmtid;
this.pid = pid;
}
}
}

11
EonaCat.VolumeMixer/Models/Role.cs Normal file
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namespace EonaCat.VolumeMixer.Models
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
internal enum Role
{
Console,
Multimedia,
Communications
}
}

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213
LICENSE
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
https://EonaCat.com/license/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
OF SOFTWARE BY EONACAT (JEROEN SAEY)
1. Definitions.
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
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# EonaCat.VolumeMixer
EonaCat.VolumeMixer Library
------------
The EonaCat.VolumeMixer library provides an interface to interact with individual audio sessions on Windows.
It allows you to retrieve and modify the volume and mute state of a session, get session metadata, and access information about the associated process.
This class uses Windows Core Audio APIs via COM interop to manage audio sessions, making it suitable for applications that need fine-grained control over audio streams per process or session.
## Features
- Get and set audio session volume asynchronously
- Get and set mute state asynchronously
- Retrieve session metadata such as display name, icon path, process ID, and state
- Get the name of the process owning the session
- Thread-safe operations with internal synchronization
- Proper cleanup of COM resources through implementation of IDisposable
## Note
Volume and mute setters are asynchronous and include retry logic for reliability.
Volume values must be between 0.0 (silent) and 1.0 (max volume).
Getting process name returns "Unknown" if the process cannot be found.
Thread-safe for concurrent use.
Requires Windows Vista or later with Core Audio APIs.
## Dependencies
Must be run with permissions that allow access to audio session interfaces.
### Accessing session state:
```csharp
using EonaCat.VolumeMixer;
IAudioSessionControlExtended sessionControl = /* obtained from enumerator */;
IAudioSessionManager sessionManager = /* obtained from audio device */;
var audioSession = new AudioSession(sessionControl, sessionManager);
string displayName = audioSession.DisplayName;
string iconPath = audioSession.IconPath;
uint processId = audioSession.ProcessId;
AudioSessionState state = audioSession.State;
```
### Obtaining current volume and mute state:
```csharp
// Get current volume (0.0 to 1.0)
float volume = audioSession.GetVolume();
// Set volume asynchronously
bool success = await audioSession.SetVolumeAsync(0.75f);
if (success)
{
Console.WriteLine("Volume set successfully");
}
else
{
Console.WriteLine("Failed to set volume");
}
```
### Mute control:
```csharp
// Get mute status
bool isMuted = audioSession.GetMute();
// Set mute asynchronously
bool muteSuccess = await audioSession.SetMuteAsync(true);
if (muteSuccess)
{
Console.WriteLine("Muted successfully");
}
else
{
Console.WriteLine("Failed to mute");
}
```
### Process Information:
```csharp
string processName = audioSession.GetProcessName();
Console.WriteLine($"Audio session process: {processName}");
```
### Playback management example:
```csharp
using EonaCat.VolumeMixer.Managers;
using EonaCat.VolumeMixer.Models;
using System;
using System.Threading.Tasks;
class Program
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[STAThread]
static async Task Main()
{
// Playback management example
using (var volumeMixer = new VolumeMixerManager())
{
try
{
// Get all audio PLAYBACK devices
var devices = await volumeMixer.GetAudioDevicesAsync(DataFlow.Output);
Console.WriteLine($"Found {devices.Count} playback devices:");
foreach (var device in devices)
{
Console.WriteLine($"- {device.Name} (Default: {device.IsDefault})");
Console.WriteLine($" Volume: {await device.GetMasterVolumeAsync():P0}");
Console.WriteLine($" Muted: {await device.GetMasterMuteAsync()}");
device.Dispose();
}
// Default playback device
using (var defaultDevice = await volumeMixer.GetDefaultAudioDeviceAsync(DataFlow.Output))
{
if (defaultDevice != null)
{
Console.WriteLine($"\nDefault playback device: {defaultDevice.Name}");
// Get all audio sessions
var sessions = await defaultDevice.GetAudioSessionsAsync();
Console.WriteLine($"Active sessions: {sessions.Count}");
foreach (var session in sessions)
{
Console.WriteLine($"- {session.DisplayName} ({await session.GetProcessNameAsync()})");
Console.WriteLine($" Volume: {await session.GetVolumeAsync():P0}");
Console.WriteLine($" Muted: {await session.GetMuteAsync()}");
session.Dispose();
}
}
// Example Set volume of default device
if (defaultDevice != null)
{
// Unmute the device if it is muted
if (await defaultDevice.GetMasterMuteAsync())
{
Console.WriteLine("Unmuting default playback device...");
await defaultDevice.SetMasterMuteAsync(false);
}
Console.WriteLine($"\nSetting default playback device volume to 1%");
bool success = await defaultDevice.SetMasterVolumeAsync(0.1f);
// Log the current volume
Console.WriteLine($"Current volume: {await defaultDevice.GetMasterVolumeAsync():P0}");
for (int i = 0; i < 50; i++)
{
if (await defaultDevice.GetMasterVolumeAsync() >= 1f)
{
break;
}
// Increment volume by 2% each step
success = await defaultDevice.StepUpAsync();
Console.WriteLine($"Current step volume: {await defaultDevice.GetMasterVolumeAsync():P0}");
}
if (success)
{
Console.WriteLine("Volume increased by 95% successfully.");
}
else
{
Console.WriteLine("Failed to increase volume.");
}
// Toggle mute
// bool currentMute = await defaultDevice.GetMasterMuteAsync();
// success = await defaultDevice.SetMasterMuteAsync(!currentMute);
// Console.WriteLine($"Mute toggled: {success}");
}
else
{
Console.WriteLine("No default playback device found");
}
}
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}");
}
}
}
}
```
### Microphone management example:
```csharp
using EonaCat.VolumeMixer.Managers;
using EonaCat.VolumeMixer.Models;
using System;
using System.Threading.Tasks;
class Program
{
// This file is part of the EonaCat project(s) which is released under the Apache License.
// See the LICENSE file or go to https://EonaCat.com/License for full license details.
[STAThread]
static async Task Main()
{
// Microphone management example
using (var micManager = new MicrophoneManager())
{
try
{
// Get all microphones
var microphones = await micManager.GetMicrophonesAsync();
Console.WriteLine($"Found {microphones.Count} microphones:");
foreach (var mic in microphones)
{
Console.WriteLine($"- {mic.Name} (Default: {mic.IsDefault})");
Console.WriteLine($" Volume: {await mic.GetMasterVolumeAsync():P0}");
Console.WriteLine($" Muted: {await mic.GetMasterMuteAsync()}");
mic.Dispose();
}
// Default microphone
using (var defaultMic = await micManager.GetDefaultMicrophoneAsync())
{
Console.WriteLine($"\nSetting default microphone volume to 1%");
bool success = await defaultMic.SetMasterVolumeAsync(0.1f);
// Log the current volume
Console.WriteLine($"Current volume: {await defaultMic.GetMasterVolumeAsync():P0}");
for (int i = 0; i < 50; i++)
{
if (await defaultMic.GetMasterVolumeAsync() >= 1f)
{
break;
}
// Increment volume by 2% each step
success = await defaultMic.StepUpAsync();
Console.WriteLine($"Current step volume: {await defaultMic.GetMasterVolumeAsync():P0}");
}
if (success)
{
Console.WriteLine("Volume increased by 95% successfully.");
}
else
{
Console.WriteLine("Failed to increase volume.");
}
}
Console.WriteLine($"Default mic volume: {await micManager.GetMicrophoneVolumeAsync():P0}");
Console.WriteLine($"Default mic muted: {await micManager.GetMicrophoneMuteAsync()}");
// Set microphone volume to 60%
bool result = await micManager.SetMicrophoneVolumeAsync(0.6f);
Console.WriteLine($"Set microphone volume to 60%: {result}");
// Set specific microphone by name
result = await micManager.SetMicrophoneVolumeByNameAsync("USB", 0.7f);
Console.WriteLine($"Set USB microphone volume to 70%: {result}");
}
catch (Exception exception)
{
Console.WriteLine($"Error: {exception.Message}");
}
}
}
}
```

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