├── CoreAudioApi.csproj ├── Form1.Designer.cs ├── Form1.cs ├── Form1.resx ├── Interface.png ├── Program.cs ├── Properties ├── AssemblyInfo.cs ├── Resources.Designer.cs ├── Resources.resx ├── Settings.Designer.cs └── Settings.settings ├── README.md ├── SystemVolumeControl ├── AUDIO_VOLUME_NOTIFICATION_DATA.cs ├── AudioEndPointVolumeVolumeRange.cs ├── AudioEndpointVolume.cs ├── AudioEndpointVolumeCallback.cs ├── AudioEndpointVolumeChannel.cs ├── AudioEndpointVolumeChannels.cs ├── AudioEndpointVolumeNotificationDelegate.cs ├── AudioEndpointVolumeStepInformation.cs ├── AudioMeterInformation.cs ├── AudioMeterInformationChannels.cs ├── AudioSessionControl.cs ├── AudioSessionDisconnectReason.cs ├── AudioSessionManager.cs ├── AudioSessionState.cs ├── AudioVolumeNotificationData.cs ├── Blob.cs ├── CLSCTX.cs ├── EDataFlow.cs ├── EDeviceState.cs ├── EEndpointHardwareSupport.cs ├── ERole.cs ├── IAudioEndpointVolume.cs ├── IAudioEndpointVolumeCallback.cs ├── IAudioMeterInformation.cs ├── IAudioPeakMeter.cs ├── IAudioSessionControl2.cs ├── IAudioSessionEnumerator.cs ├── IAudioSessionEvents.cs ├── IAudioSessionManager2.cs ├── IMMDevice.cs ├── IMMDeviceCollection.cs ├── IMMDeviceEnumerator.cs ├── IMMEndpoint.cs ├── IPropertyStore.cs ├── ISimpleAudioVolume.cs ├── MMDevice.cs ├── MMDeviceCollection.cs ├── MMDeviceEnumerator.cs ├── PKEY.cs ├── PropVariant.cs ├── PropertyKey.cs ├── PropertyStore.cs ├── PropertyStoreProperty.cs ├── SessionCollection.cs ├── SimpleAudioVolume.cs └── eStgmAccess.cs ├── bin ├── Debug │ ├── CoreAudioApi.exe │ └── CoreAudioApi.pdb └── Release │ ├── CoreAudioApi.exe │ ├── CoreAudioApi.pdb │ └── 音量控制.exe └── obj ├── Debug ├── CoreAudioApi.Form1.resources ├── CoreAudioApi.Properties.Resources.resources ├── CoreAudioApi.csproj.CoreCompileInputs.cache ├── CoreAudioApi.csproj.FileListAbsolute.txt ├── CoreAudioApi.csproj.GenerateResource.cache ├── CoreAudioApi.exe ├── CoreAudioApi.pdb ├── DesignTimeResolveAssemblyReferences.cache └── DesignTimeResolveAssemblyReferencesInput.cache └── Release ├── CoreAudioApi.Form1.resources ├── CoreAudioApi.Properties.Resources.resources ├── CoreAudioApi.csproj.CoreCompileInputs.cache ├── CoreAudioApi.csproj.FileListAbsolute.txt ├── CoreAudioApi.csproj.GenerateResource.cache ├── CoreAudioApi.csprojAssemblyReference.cache ├── CoreAudioApi.exe ├── CoreAudioApi.pdb ├── DesignTimeResolveAssemblyReferences.cache └── DesignTimeResolveAssemblyReferencesInput.cache /CoreAudioApi.csproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | Debug 6 | AnyCPU 7 | {592205AE-2BC0-4EBE-A832-1BD8F51775E9} 8 | WinExe 9 | CoreAudioApi 10 | CoreAudioApi 11 | v2.0 12 | 512 13 | 14 | 15 | AnyCPU 16 | true 17 | full 18 | false 19 | bin\Debug\ 20 | DEBUG;TRACE 21 | prompt 22 | 4 23 | 24 | 25 | AnyCPU 26 | pdbonly 27 | true 28 | bin\Release\ 29 | TRACE 30 | prompt 31 | 4 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | Form 44 | 45 | 46 | Form1.cs 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | Form1.cs 98 | 99 | 100 | ResXFileCodeGenerator 101 | Resources.Designer.cs 102 | Designer 103 | 104 | 105 | True 106 | Resources.resx 107 | 108 | 109 | SettingsSingleFileGenerator 110 | Settings.Designer.cs 111 | 112 | 113 | True 114 | Settings.settings 115 | True 116 | 117 | 118 | 119 | -------------------------------------------------------------------------------- /Form1.Designer.cs: -------------------------------------------------------------------------------- 1 | namespace CoreAudioApi 2 | { 3 | partial class Form1 4 | { 5 | /// 6 | /// 必需的设计器变量。 7 | /// 8 | private System.ComponentModel.IContainer components = null; 9 | 10 | /// 11 | /// 清理所有正在使用的资源。 12 | /// 13 | /// 如果应释放托管资源，为 true；否则为 false。 14 | protected override void Dispose(bool disposing) 15 | { 16 | if (disposing && (components != null)) 17 | { 18 | components.Dispose(); 19 | } 20 | base.Dispose(disposing); 21 | } 22 | 23 | #region Windows 窗体设计器生成的代码 24 | 25 | /// 26 | /// 设计器支持所需的方法 - 不要修改 27 | /// 使用代码编辑器修改此方法的内容。 28 | /// 29 | private void InitializeComponent() 30 | { 31 | this.components = new System.ComponentModel.Container(); 32 | this.label1 = new System.Windows.Forms.Label(); 33 | this.progressBar1 = new System.Windows.Forms.ProgressBar(); 34 | this.label2 = new System.Windows.Forms.Label(); 35 | this.label3 = new System.Windows.Forms.Label(); 36 | this.progressBar2 = new System.Windows.Forms.ProgressBar(); 37 | this.label4 = new System.Windows.Forms.Label(); 38 | this.progressBar3 = new System.Windows.Forms.ProgressBar(); 39 | this.label5 = new System.Windows.Forms.Label(); 40 | this.timer1 = new System.Windows.Forms.Timer(this.components); 41 | this.button1 = new System.Windows.Forms.Button(); 42 | this.button2 = new System.Windows.Forms.Button(); 43 | this.SuspendLayout(); 44 | // 45 | // label1 46 | // 47 | this.label1.AutoSize = true; 48 | this.label1.Location = new System.Drawing.Point(37, 110); 49 | this.label1.Name = "label1"; 50 | this.label1.Size = new System.Drawing.Size(98, 18); 51 | this.label1.TabIndex = 0; 52 | this.label1.Text = "当前音量："; 53 | // 54 | // progressBar1 55 | // 56 | this.progressBar1.Location = new System.Drawing.Point(87, 153); 57 | this.progressBar1.Name = "progressBar1"; 58 | this.progressBar1.Size = new System.Drawing.Size(226, 28); 59 | this.progressBar1.TabIndex = 1; 60 | // 61 | // label2 62 | // 63 | this.label2.AutoSize = true; 64 | this.label2.Location = new System.Drawing.Point(35, 158); 65 | this.label2.Name = "label2"; 66 | this.label2.Size = new System.Drawing.Size(44, 18); 67 | this.label2.TabIndex = 2; 68 | this.label2.Text = "主："; 69 | // 70 | // label3 71 | // 72 | this.label3.AutoSize = true; 73 | this.label3.Location = new System.Drawing.Point(35, 224); 74 | this.label3.Name = "label3"; 75 | this.label3.Size = new System.Drawing.Size(44, 18); 76 | this.label3.TabIndex = 4; 77 | this.label3.Text = "左："; 78 | // 79 | // progressBar2 80 | // 81 | this.progressBar2.Location = new System.Drawing.Point(87, 219); 82 | this.progressBar2.Name = "progressBar2"; 83 | this.progressBar2.Size = new System.Drawing.Size(226, 28); 84 | this.progressBar2.TabIndex = 3; 85 | // 86 | // label4 87 | // 88 | this.label4.AutoSize = true; 89 | this.label4.Location = new System.Drawing.Point(35, 290); 90 | this.label4.Name = "label4"; 91 | this.label4.Size = new System.Drawing.Size(44, 18); 92 | this.label4.TabIndex = 6; 93 | this.label4.Text = "右："; 94 | // 95 | // progressBar3 96 | // 97 | this.progressBar3.Location = new System.Drawing.Point(87, 285); 98 | this.progressBar3.Name = "progressBar3"; 99 | this.progressBar3.Size = new System.Drawing.Size(226, 28); 100 | this.progressBar3.TabIndex = 5; 101 | // 102 | // label5 103 | // 104 | this.label5.AutoSize = true; 105 | this.label5.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134))); 106 | this.label5.Location = new System.Drawing.Point(264, 9); 107 | this.label5.Name = "label5"; 108 | this.label5.Size = new System.Drawing.Size(80, 18); 109 | this.label5.TabIndex = 7; 110 | this.label5.Text = "设计：Yu"; 111 | // 112 | // timer1 113 | // 114 | this.timer1.Enabled = true; 115 | this.timer1.Interval = 200; 116 | this.timer1.Tick += new System.EventHandler(this.timer1_Tick); 117 | // 118 | // button1 119 | // 120 | this.button1.Location = new System.Drawing.Point(76, 43); 121 | this.button1.Name = "button1"; 122 | this.button1.Size = new System.Drawing.Size(76, 48); 123 | this.button1.TabIndex = 8; 124 | this.button1.Text = "加音量"; 125 | this.button1.UseVisualStyleBackColor = true; 126 | this.button1.Click += new System.EventHandler(this.button1_Click); 127 | // 128 | // button2 129 | // 130 | this.button2.Location = new System.Drawing.Point(192, 43); 131 | this.button2.Name = "button2"; 132 | this.button2.Size = new System.Drawing.Size(76, 48); 133 | this.button2.TabIndex = 9; 134 | this.button2.Text = "减音量"; 135 | this.button2.UseVisualStyleBackColor = true; 136 | this.button2.Click += new System.EventHandler(this.button2_Click); 137 | // 138 | // Form1 139 | // 140 | this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 18F); 141 | this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 142 | this.ClientSize = new System.Drawing.Size(356, 342); 143 | this.Controls.Add(this.button2); 144 | this.Controls.Add(this.button1); 145 | this.Controls.Add(this.label5); 146 | this.Controls.Add(this.label4); 147 | this.Controls.Add(this.progressBar3); 148 | this.Controls.Add(this.label3); 149 | this.Controls.Add(this.progressBar2); 150 | this.Controls.Add(this.label2); 151 | this.Controls.Add(this.progressBar1); 152 | this.Controls.Add(this.label1); 153 | this.Name = "Form1"; 154 | this.Text = "Form1"; 155 | this.Load += new System.EventHandler(this.Form1_Load); 156 | this.ResumeLayout(false); 157 | this.PerformLayout(); 158 | 159 | } 160 | 161 | #endregion 162 | 163 | private System.Windows.Forms.Label label1; 164 | private System.Windows.Forms.ProgressBar progressBar1; 165 | private System.Windows.Forms.Label label2; 166 | private System.Windows.Forms.Label label3; 167 | private System.Windows.Forms.ProgressBar progressBar2; 168 | private System.Windows.Forms.Label label4; 169 | private System.Windows.Forms.ProgressBar progressBar3; 170 | private System.Windows.Forms.Label label5; 171 | private System.Windows.Forms.Timer timer1; 172 | private System.Windows.Forms.Button button1; 173 | private System.Windows.Forms.Button button2; 174 | } 175 | } 176 | 177 | -------------------------------------------------------------------------------- /Form1.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Windows.Forms; 3 | 4 | namespace CoreAudioApi 5 | { 6 | public partial class Form1 : Form 7 | { 8 | public Form1() 9 | { 10 | InitializeComponent(); 11 | } 12 | 13 | MMDevice device; 14 | 15 | private void Form1_Load(object sender, EventArgs e) 16 | { 17 | //初始化设备 18 | MMDeviceEnumerator devEnum = new MMDeviceEnumerator(); 19 | device = devEnum.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia); 20 | } 21 | 22 | /// 23 | /// 获取当前音量 24 | /// 25 | public int CurrentVolume 26 | { 27 | get => Convert.ToInt32(device.AudioEndpointVolume.MasterVolumeLevelScalar * 100.0f); 28 | } 29 | /// 30 | /// 设置音量 31 | /// 32 | public int SetVolume 33 | { 34 | get => CurrentVolume; 35 | set 36 | { 37 | if (value < 0) device.AudioEndpointVolume.MasterVolumeLevelScalar = 0.0f; 38 | else if (value > 100) device.AudioEndpointVolume.MasterVolumeLevelScalar = 100.0f; 39 | else device.AudioEndpointVolume.MasterVolumeLevelScalar = value / 100.0f; 40 | } 41 | } 42 | /// 43 | /// 定时器更新并显示当前音量和峰值 44 | /// 45 | /// 46 | /// 47 | private void timer1_Tick(object sender, EventArgs e) 48 | { 49 | label1.Text = "当前音量："+ CurrentVolume; 50 | 51 | //使用Convert.ToInt32转换没有误差 52 | progressBar1.Value = Convert.ToInt32(device.AudioMeterInformation.MasterPeakValue * 100.0f); 53 | progressBar2.Value = Convert.ToInt32(device.AudioMeterInformation.PeakValues[0] * 100.0f); 54 | progressBar3.Value = Convert.ToInt32(device.AudioMeterInformation.PeakValues[1] * 100.0f); 55 | } 56 | 57 | private void button1_Click(object sender, EventArgs e) 58 | { 59 | //每点击一次，音量加10 60 | SetVolume += 10; 61 | } 62 | 63 | private void button2_Click(object sender, EventArgs e) 64 | { 65 | //每点击一次，音量减10 66 | SetVolume -= 10; 67 | } 68 | } 69 | } 70 | -------------------------------------------------------------------------------- /Form1.resx: -------------------------------------------------------------------------------- 1 |  2 | 3 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | text/microsoft-resx 110 | 111 | 112 | 2.0 113 | 114 | 115 | System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 116 | 117 | 118 | System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 119 | 120 | 121 | 17, 17 122 | 123 | -------------------------------------------------------------------------------- /Interface.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yuxianqiang/CoreAudioApi/6b27c83b59dcec1fd257b89555130a8914be9aef/Interface.png -------------------------------------------------------------------------------- /Program.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Collections.Generic; 3 | using System.Windows.Forms; 4 | 5 | namespace CoreAudioApi 6 | { 7 | static class Program 8 | { 9 | /// 10 | /// 应用程序的主入口点。 11 | /// 12 | [STAThread] 13 | static void Main() 14 | { 15 | Application.EnableVisualStyles(); 16 | Application.SetCompatibleTextRenderingDefault(false); 17 | Application.Run(new Form1()); 18 | } 19 | } 20 | } 21 | -------------------------------------------------------------------------------- /Properties/AssemblyInfo.cs: -------------------------------------------------------------------------------- 1 | using System.Reflection; 2 | using System.Runtime.CompilerServices; 3 | using System.Runtime.InteropServices; 4 | 5 | // 有关程序集的一般信息由以下 6 | // 控制。更改这些特性值可修改 7 | // 与程序集关联的信息。 8 | [assembly: AssemblyTitle("CoreAudioApi")] 9 | [assembly: AssemblyDescription("")] 10 | [assembly: AssemblyConfiguration("")] 11 | [assembly: AssemblyCompany("")] 12 | [assembly: AssemblyProduct("CoreAudioApi")] 13 | [assembly: AssemblyCopyright("Copyright © 2018")] 14 | [assembly: AssemblyTrademark("")] 15 | [assembly: AssemblyCulture("")] 16 | 17 | // 将 ComVisible 设置为 false 会使此程序集中的类型 18 | //对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型 19 | //请将此类型的 ComVisible 特性设置为 true。 20 | [assembly: ComVisible(false)] 21 | 22 | // 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID 23 | [assembly: Guid("592205ae-2bc0-4ebe-a832-1bd8f51775e9")] 24 | 25 | // 程序集的版本信息由下列四个值组成: 26 | // 27 | // 主版本 28 | // 次版本 29 | // 生成号 30 | // 修订号 31 | // 32 | // 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号 33 | // 方法是按如下所示使用“*”: : 34 | // [assembly: AssemblyVersion("1.0.*")] 35 | [assembly: AssemblyVersion("1.0.0.0")] 36 | [assembly: AssemblyFileVersion("1.0.0.0")] 37 | -------------------------------------------------------------------------------- /Properties/Resources.Designer.cs: -------------------------------------------------------------------------------- 1 | //------------------------------------------------------------------------------ 2 | // 3 | // 此代码由工具生成。 4 | // 运行时版本: 4.0.30319.42000 5 | // 6 | // 对此文件的更改可能导致不正确的行为，如果 7 | // 重新生成代码，则所做更改将丢失。 8 | // 9 | //------------------------------------------------------------------------------ 10 | 11 | namespace CoreAudioApi.Properties 12 | { 13 | 14 | 15 | /// 16 | /// 强类型资源类，用于查找本地化字符串等。 17 | /// 18 | // 此类是由 StronglyTypedResourceBuilder 19 | // 类通过类似于 ResGen 或 Visual Studio 的工具自动生成的。 20 | // 若要添加或删除成员，请编辑 .ResX 文件，然后重新运行 ResGen 21 | // (以 /str 作为命令选项)，或重新生成 VS 项目。 22 | [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")] 23 | [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] 24 | [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()] 25 | internal class Resources 26 | { 27 | 28 | private static global::System.Resources.ResourceManager resourceMan; 29 | 30 | private static global::System.Globalization.CultureInfo resourceCulture; 31 | 32 | [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")] 33 | internal Resources() 34 | { 35 | } 36 | 37 | /// 38 | /// 返回此类使用的缓存 ResourceManager 实例。 39 | /// 40 | [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)] 41 | internal static global::System.Resources.ResourceManager ResourceManager 42 | { 43 | get 44 | { 45 | if ((resourceMan == null)) 46 | { 47 | global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("CoreAudioApi.Properties.Resources", typeof(Resources).Assembly); 48 | resourceMan = temp; 49 | } 50 | return resourceMan; 51 | } 52 | } 53 | 54 | /// 55 | /// 覆盖当前线程的 CurrentUICulture 属性 56 | /// 使用此强类型的资源类的资源查找。 57 | /// 58 | [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)] 59 | internal static global::System.Globalization.CultureInfo Culture 60 | { 61 | get 62 | { 63 | return resourceCulture; 64 | } 65 | set 66 | { 67 | resourceCulture = value; 68 | } 69 | } 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /Properties/Resources.resx: -------------------------------------------------------------------------------- 1 |  2 | 3 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | text/microsoft-resx 107 | 108 | 109 | 2.0 110 | 111 | 112 | System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 113 | 114 | 115 | System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 116 | 117 | -------------------------------------------------------------------------------- /Properties/Settings.Designer.cs: -------------------------------------------------------------------------------- 1 | //------------------------------------------------------------------------------ 2 | // 3 | // This code was generated by a tool. 4 | // Runtime Version:4.0.30319.42000 5 | // 6 | // Changes to this file may cause incorrect behavior and will be lost if 7 | // the code is regenerated. 8 | // 9 | //------------------------------------------------------------------------------ 10 | 11 | namespace CoreAudioApi.Properties 12 | { 13 | 14 | 15 | [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()] 16 | [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")] 17 | internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase 18 | { 19 | 20 | private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings()))); 21 | 22 | public static Settings Default 23 | { 24 | get 25 | { 26 | return defaultInstance; 27 | } 28 | } 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /Properties/Settings.settings: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | C# win7 win10 系统音量控制 CoreAudioApi源码 显示峰值 2 | vs2017 + .net2.0 3 | 4 | ![](https://github.com/yuxianqiang/CoreAudioApi/blob/master/Interface.png?raw=true) 5 | -------------------------------------------------------------------------------- /SystemVolumeControl/AUDIO_VOLUME_NOTIFICATION_DATA.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | internal struct AUDIO_VOLUME_NOTIFICATION_DATA 30 | { 31 | public Guid guidEventContext; 32 | public bool bMuted; 33 | public float fMasterVolume; 34 | public uint nChannels; 35 | public float ChannelVolume; 36 | 37 | //Code Should Compile at warning level4 without any warnings, 38 | //However this struct will give us Warning CS0649: Field [Fieldname] 39 | //is never assigned to, and will always have its default value 40 | //You can disable CS0649 in the project options but that will disable 41 | //the warning for the whole project, it's a nice warning and we do want 42 | //it in other places so we make a nice dummy function to keep the compiler 43 | //happy. 44 | private void FixCS0649() 45 | { 46 | guidEventContext = Guid.Empty; 47 | bMuted = false; 48 | fMasterVolume = 0; 49 | nChannels = 0; 50 | ChannelVolume = 0; 51 | } 52 | 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndPointVolumeVolumeRange.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using CoreAudioApi.Interfaces; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class AudioEndPointVolumeVolumeRange 31 | { 32 | float _VolumeMindB; 33 | float _VolumeMaxdB; 34 | float _VolumeIncrementdB; 35 | 36 | internal AudioEndPointVolumeVolumeRange(IAudioEndpointVolume parent) 37 | { 38 | Marshal.ThrowExceptionForHR(parent.GetVolumeRange(out _VolumeMindB,out _VolumeMaxdB,out _VolumeIncrementdB)); 39 | } 40 | 41 | public float MindB 42 | { 43 | get 44 | { 45 | return _VolumeMindB; 46 | } 47 | } 48 | 49 | public float MaxdB 50 | { 51 | get 52 | { 53 | return _VolumeMaxdB; 54 | } 55 | } 56 | 57 | public float IncrementdB 58 | { 59 | get 60 | { 61 | return _VolumeIncrementdB; 62 | } 63 | } 64 | } 65 | } 66 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndpointVolume.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | using CoreAudioApi.Interfaces; 27 | using System.Runtime.InteropServices; 28 | 29 | namespace CoreAudioApi 30 | { 31 | 32 | public class AudioEndpointVolume : IDisposable 33 | { 34 | private IAudioEndpointVolume _AudioEndPointVolume; 35 | private AudioEndpointVolumeChannels _Channels; 36 | private AudioEndpointVolumeStepInformation _StepInformation; 37 | private AudioEndPointVolumeVolumeRange _VolumeRange; 38 | private EEndpointHardwareSupport _HardwareSupport; 39 | private AudioEndpointVolumeCallback _CallBack; 40 | public event AudioEndpointVolumeNotificationDelegate OnVolumeNotification; 41 | 42 | public AudioEndPointVolumeVolumeRange VolumeRange 43 | { 44 | get 45 | { 46 | return _VolumeRange; 47 | } 48 | } 49 | public EEndpointHardwareSupport HardwareSupport 50 | { 51 | get 52 | { 53 | return _HardwareSupport; 54 | } 55 | } 56 | public AudioEndpointVolumeStepInformation StepInformation 57 | { 58 | get 59 | { 60 | return _StepInformation; 61 | } 62 | } 63 | public AudioEndpointVolumeChannels Channels 64 | { 65 | get 66 | { 67 | return _Channels; 68 | } 69 | } 70 | public float MasterVolumeLevel 71 | { 72 | get 73 | { 74 | float result; 75 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.GetMasterVolumeLevel(out result)); 76 | return result; 77 | } 78 | set 79 | { 80 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.SetMasterVolumeLevel(value, Guid.Empty)); 81 | } 82 | } 83 | public float MasterVolumeLevelScalar 84 | { 85 | get 86 | { 87 | float result; 88 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.GetMasterVolumeLevelScalar(out result)); 89 | return result; 90 | } 91 | set 92 | { 93 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.SetMasterVolumeLevelScalar(value, Guid.Empty)); 94 | } 95 | } 96 | public bool Mute 97 | { 98 | get 99 | { 100 | bool result; 101 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.GetMute(out result)); 102 | return result; 103 | } 104 | set 105 | { 106 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.SetMute(value, Guid.Empty)); 107 | } 108 | } 109 | public void VolumeStepUp() 110 | { 111 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.VolumeStepUp(Guid.Empty)); 112 | } 113 | public void VolumeStepDown() 114 | { 115 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.VolumeStepDown(Guid.Empty)); 116 | } 117 | internal AudioEndpointVolume(IAudioEndpointVolume realEndpointVolume) 118 | { 119 | uint HardwareSupp; 120 | 121 | _AudioEndPointVolume = realEndpointVolume; 122 | _Channels = new AudioEndpointVolumeChannels(_AudioEndPointVolume); 123 | _StepInformation = new AudioEndpointVolumeStepInformation(_AudioEndPointVolume); 124 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.QueryHardwareSupport(out HardwareSupp)); 125 | _HardwareSupport = (EEndpointHardwareSupport)HardwareSupp; 126 | _VolumeRange = new AudioEndPointVolumeVolumeRange(_AudioEndPointVolume); 127 | _CallBack = new AudioEndpointVolumeCallback(this); 128 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.RegisterControlChangeNotify( _CallBack)); 129 | } 130 | internal void FireNotification(AudioVolumeNotificationData NotificationData) 131 | { 132 | AudioEndpointVolumeNotificationDelegate del = OnVolumeNotification; 133 | if (del != null) 134 | { 135 | del(NotificationData); 136 | } 137 | } 138 | #region IDisposable Members 139 | 140 | public void Dispose() 141 | { 142 | if (_CallBack != null) 143 | { 144 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.UnregisterControlChangeNotify( _CallBack )); 145 | _CallBack = null; 146 | } 147 | } 148 | 149 | ~AudioEndpointVolume() 150 | { 151 | Dispose(); 152 | } 153 | 154 | #endregion 155 | 156 | } 157 | } 158 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndpointVolumeCallback.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | using CoreAudioApi.Interfaces; 27 | using System.Runtime.InteropServices; 28 | 29 | namespace CoreAudioApi 30 | { 31 | // This class implements the IAudioEndpointVolumeCallback interface, 32 | // it is implemented in this class because implementing it on AudioEndpointVolume 33 | // (where the functionality is really wanted, would cause the OnNotify function 34 | // to show up in the public API. 35 | internal class AudioEndpointVolumeCallback : IAudioEndpointVolumeCallback 36 | { 37 | private AudioEndpointVolume _Parent; 38 | 39 | internal AudioEndpointVolumeCallback(AudioEndpointVolume parent) 40 | { 41 | _Parent = parent; 42 | } 43 | 44 | [PreserveSig] public int OnNotify(IntPtr NotifyData) 45 | { 46 | //Since AUDIO_VOLUME_NOTIFICATION_DATA is dynamic in length based on the 47 | //number of audio channels available we cannot just call PtrToStructure 48 | //to get all data, thats why it is split up into two steps, first the static 49 | //data is marshalled into the data structure, then with some IntPtr math the 50 | //remaining floats are read from memory. 51 | // 52 | AUDIO_VOLUME_NOTIFICATION_DATA data = (AUDIO_VOLUME_NOTIFICATION_DATA) Marshal.PtrToStructure(NotifyData, typeof(AUDIO_VOLUME_NOTIFICATION_DATA)); 53 | 54 | //Determine offset in structure of the first float 55 | IntPtr Offset = Marshal.OffsetOf(typeof(AUDIO_VOLUME_NOTIFICATION_DATA),"ChannelVolume"); 56 | //Determine offset in memory of the first float 57 | IntPtr FirstFloatPtr = (IntPtr)((long)NotifyData + (long)Offset); 58 | 59 | float[] voldata = new float[data.nChannels]; 60 | 61 | //Read all floats from memory. 62 | for (int i = 0; i < data.nChannels; i++) 63 | { 64 | voldata[i] = (float)Marshal.PtrToStructure(FirstFloatPtr, typeof(float)); 65 | } 66 | 67 | //Create combined structure and Fire Event in parent class. 68 | AudioVolumeNotificationData NotificationData = new AudioVolumeNotificationData(data.guidEventContext, data.bMuted, data.fMasterVolume, voldata); 69 | _Parent.FireNotification(NotificationData); 70 | return 0; //S_OK 71 | } 72 | } 73 | } 74 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndpointVolumeChannel.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | using CoreAudioApi.Interfaces; 27 | using System.Runtime.InteropServices; 28 | 29 | namespace CoreAudioApi 30 | { 31 | public class AudioEndpointVolumeChannel 32 | { 33 | private uint _Channel; 34 | private IAudioEndpointVolume _AudioEndpointVolume; 35 | 36 | internal AudioEndpointVolumeChannel(IAudioEndpointVolume parent, int channel) 37 | { 38 | _Channel = (uint)channel; 39 | _AudioEndpointVolume = parent; 40 | } 41 | 42 | public float VolumeLevel 43 | { 44 | get 45 | { 46 | float result; 47 | Marshal.ThrowExceptionForHR(_AudioEndpointVolume.GetChannelVolumeLevel(_Channel,out result)); 48 | return result; 49 | } 50 | set 51 | { 52 | Marshal.ThrowExceptionForHR(_AudioEndpointVolume.SetChannelVolumeLevel(_Channel, value,Guid.Empty)); 53 | } 54 | } 55 | 56 | public float VolumeLevelScalar 57 | { 58 | get 59 | { 60 | float result; 61 | Marshal.ThrowExceptionForHR(_AudioEndpointVolume.GetChannelVolumeLevelScalar(_Channel, out result)); 62 | return result; 63 | } 64 | set 65 | { 66 | Marshal.ThrowExceptionForHR(_AudioEndpointVolume.SetChannelVolumeLevelScalar(_Channel, value, Guid.Empty)); 67 | } 68 | } 69 | 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndpointVolumeChannels.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | using CoreAudioApi.Interfaces; 27 | using System.Runtime.InteropServices; 28 | 29 | namespace CoreAudioApi 30 | { 31 | public class AudioEndpointVolumeChannels 32 | { 33 | IAudioEndpointVolume _AudioEndPointVolume; 34 | AudioEndpointVolumeChannel[] _Channels; 35 | public int Count 36 | { 37 | get 38 | { 39 | int result; 40 | Marshal.ThrowExceptionForHR(_AudioEndPointVolume.GetChannelCount(out result)); 41 | return result; 42 | } 43 | } 44 | 45 | public AudioEndpointVolumeChannel this[int index] 46 | { 47 | get 48 | { 49 | return _Channels[index]; 50 | } 51 | } 52 | 53 | internal AudioEndpointVolumeChannels(IAudioEndpointVolume parent) 54 | { 55 | int ChannelCount; 56 | _AudioEndPointVolume = parent; 57 | 58 | ChannelCount = Count; 59 | _Channels = new AudioEndpointVolumeChannel[ChannelCount]; 60 | for (int i = 0; i < ChannelCount; i++) 61 | { 62 | _Channels[i] = new AudioEndpointVolumeChannel(_AudioEndPointVolume, i); 63 | } 64 | } 65 | 66 | 67 | } 68 | } 69 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndpointVolumeNotificationDelegate.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | 27 | namespace CoreAudioApi 28 | { 29 | public delegate void AudioEndpointVolumeNotificationDelegate( AudioVolumeNotificationData data); 30 | } 31 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioEndpointVolumeStepInformation.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using CoreAudioApi.Interfaces; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class AudioEndpointVolumeStepInformation 31 | { 32 | private uint _Step; 33 | private uint _StepCount; 34 | internal AudioEndpointVolumeStepInformation(IAudioEndpointVolume parent) 35 | { 36 | Marshal.ThrowExceptionForHR(parent.GetVolumeStepInfo(out _Step, out _StepCount)); 37 | } 38 | 39 | public uint Step 40 | { 41 | get 42 | { 43 | return _Step; 44 | } 45 | } 46 | 47 | public uint StepCount 48 | { 49 | get 50 | { 51 | return _StepCount; 52 | } 53 | } 54 | 55 | } 56 | } 57 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioMeterInformation.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using CoreAudioApi.Interfaces; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class AudioMeterInformation 31 | { 32 | private IAudioMeterInformation _AudioMeterInformation; 33 | private EEndpointHardwareSupport _HardwareSupport; 34 | private AudioMeterInformationChannels _Channels; 35 | 36 | internal AudioMeterInformation(IAudioMeterInformation realInterface) 37 | { 38 | int HardwareSupp; 39 | 40 | _AudioMeterInformation = realInterface; 41 | Marshal.ThrowExceptionForHR(_AudioMeterInformation.QueryHardwareSupport(out HardwareSupp)); 42 | _HardwareSupport = (EEndpointHardwareSupport)HardwareSupp; 43 | _Channels = new AudioMeterInformationChannels(_AudioMeterInformation); 44 | 45 | } 46 | 47 | public AudioMeterInformationChannels PeakValues 48 | { 49 | get 50 | { 51 | return _Channels; 52 | } 53 | } 54 | 55 | public EEndpointHardwareSupport HardwareSupport 56 | { 57 | get 58 | { 59 | return _HardwareSupport; 60 | } 61 | } 62 | 63 | public float MasterPeakValue 64 | { 65 | get 66 | { 67 | float result; 68 | Marshal.ThrowExceptionForHR(_AudioMeterInformation.GetPeakValue(out result)); 69 | return result; 70 | } 71 | } 72 | 73 | 74 | 75 | 76 | 77 | 78 | } 79 | } 80 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioMeterInformationChannels.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using CoreAudioApi.Interfaces; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class AudioMeterInformationChannels 31 | { 32 | IAudioMeterInformation _AudioMeterInformation; 33 | 34 | public int Count 35 | { 36 | get 37 | { 38 | int result; 39 | Marshal.ThrowExceptionForHR(_AudioMeterInformation.GetMeteringChannelCount(out result)); 40 | return result; 41 | } 42 | } 43 | 44 | public float this[int index] 45 | { 46 | get 47 | { 48 | float[] peakValues = new float[Count]; 49 | GCHandle Params = GCHandle.Alloc(peakValues, GCHandleType.Pinned); 50 | Marshal.ThrowExceptionForHR(_AudioMeterInformation.GetChannelsPeakValues(peakValues.Length, Params.AddrOfPinnedObject())); 51 | Params.Free(); 52 | return peakValues[index]; 53 | } 54 | } 55 | 56 | internal AudioMeterInformationChannels(IAudioMeterInformation parent) 57 | { 58 | _AudioMeterInformation = parent; 59 | } 60 | } 61 | } 62 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioSessionControl.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | //using System.Linq; 25 | using System.Text; 26 | using CoreAudioApi.Interfaces; 27 | using System.Runtime.InteropServices; 28 | 29 | namespace CoreAudioApi 30 | { 31 | public class AudioSessionControl 32 | { 33 | internal IAudioSessionControl2 _AudioSessionControl; 34 | internal AudioMeterInformation _AudioMeterInformation; 35 | internal SimpleAudioVolume _SimpleAudioVolume; 36 | 37 | public AudioMeterInformation AudioMeterInformation 38 | { 39 | get 40 | { 41 | return _AudioMeterInformation; 42 | } 43 | } 44 | 45 | public SimpleAudioVolume SimpleAudioVolume 46 | { 47 | get 48 | { 49 | return _SimpleAudioVolume; 50 | } 51 | } 52 | 53 | 54 | internal AudioSessionControl(IAudioSessionControl2 realAudioSessionControl) 55 | { 56 | IAudioMeterInformation _meters = realAudioSessionControl as IAudioMeterInformation; 57 | ISimpleAudioVolume _volume = realAudioSessionControl as ISimpleAudioVolume; 58 | if (_meters != null) 59 | _AudioMeterInformation = new CoreAudioApi.AudioMeterInformation(_meters); 60 | if (_volume != null) 61 | _SimpleAudioVolume = new SimpleAudioVolume(_volume); 62 | _AudioSessionControl = realAudioSessionControl; 63 | 64 | } 65 | 66 | public void RegisterAudioSessionNotification(IAudioSessionEvents eventConsumer) 67 | { 68 | Marshal.ThrowExceptionForHR(_AudioSessionControl.RegisterAudioSessionNotification(eventConsumer)); 69 | } 70 | 71 | public void UnregisterAudioSessionNotification(IAudioSessionEvents eventConsumer) 72 | { 73 | Marshal.ThrowExceptionForHR(_AudioSessionControl.UnregisterAudioSessionNotification(eventConsumer)); 74 | } 75 | 76 | public AudioSessionState State 77 | { 78 | get 79 | { 80 | AudioSessionState res; 81 | Marshal.ThrowExceptionForHR(_AudioSessionControl.GetState(out res)); 82 | return res; 83 | } 84 | } 85 | 86 | public string DisplayName 87 | { 88 | get 89 | { 90 | IntPtr NamePtr; 91 | Marshal.ThrowExceptionForHR(_AudioSessionControl.GetDisplayName(out NamePtr)); 92 | string res = Marshal.PtrToStringAuto(NamePtr); 93 | Marshal.FreeCoTaskMem(NamePtr); 94 | return res; 95 | } 96 | } 97 | 98 | public string IconPath 99 | { 100 | get 101 | { 102 | IntPtr NamePtr; 103 | Marshal.ThrowExceptionForHR(_AudioSessionControl.GetIconPath(out NamePtr)); 104 | string res = Marshal.PtrToStringAuto(NamePtr); 105 | Marshal.FreeCoTaskMem(NamePtr); 106 | return res; 107 | } 108 | } 109 | 110 | public string SessionIdentifier 111 | { 112 | get 113 | { 114 | IntPtr NamePtr; 115 | Marshal.ThrowExceptionForHR(_AudioSessionControl.GetSessionIdentifier(out NamePtr)); 116 | string res = Marshal.PtrToStringAuto(NamePtr); 117 | Marshal.FreeCoTaskMem(NamePtr); 118 | return res; 119 | } 120 | } 121 | 122 | public string SessionInstanceIdentifier 123 | { 124 | get 125 | { 126 | IntPtr NamePtr; 127 | Marshal.ThrowExceptionForHR(_AudioSessionControl.GetSessionInstanceIdentifier(out NamePtr)); 128 | string res = Marshal.PtrToStringAuto(NamePtr); 129 | Marshal.FreeCoTaskMem(NamePtr); 130 | return res; 131 | } 132 | } 133 | 134 | public uint ProcessID 135 | { 136 | get 137 | { 138 | uint pid; 139 | Marshal.ThrowExceptionForHR(_AudioSessionControl.GetProcessId(out pid)); 140 | return pid; 141 | } 142 | } 143 | 144 | public bool IsSystemIsSystemSoundsSession 145 | { 146 | get 147 | { 148 | return (_AudioSessionControl.IsSystemSoundsSession() == 0); //S_OK 149 | } 150 | 151 | } 152 | 153 | 154 | } 155 | } 156 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioSessionDisconnectReason.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | //using System.Linq; 25 | using System.Text; 26 | 27 | namespace CoreAudioApi 28 | { 29 | public enum AudioSessionDisconnectReason 30 | { 31 | DisconnectReasonDeviceRemoval = 0, 32 | DisconnectReasonServerShutdown = (DisconnectReasonDeviceRemoval + 1), 33 | DisconnectReasonFormatChanged = (DisconnectReasonServerShutdown + 1), 34 | DisconnectReasonSessionLogoff = (DisconnectReasonFormatChanged + 1), 35 | DisconnectReasonSessionDisconnected = (DisconnectReasonSessionLogoff + 1), 36 | DisconnectReasonExclusiveModeOverride = (DisconnectReasonSessionDisconnected + 1) 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioSessionManager.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | //using System.Linq; 26 | using System.Text; 27 | using CoreAudioApi.Interfaces; 28 | using System.Runtime.InteropServices; 29 | 30 | namespace CoreAudioApi 31 | { 32 | public class AudioSessionManager 33 | { 34 | private IAudioSessionManager2 _AudioSessionManager; 35 | private SessionCollection _Sessions; 36 | 37 | internal AudioSessionManager(IAudioSessionManager2 realAudioSessionManager) 38 | { 39 | _AudioSessionManager = realAudioSessionManager; 40 | IAudioSessionEnumerator _SessionEnum ; 41 | Marshal.ThrowExceptionForHR(_AudioSessionManager.GetSessionEnumerator(out _SessionEnum)); 42 | _Sessions = new SessionCollection(_SessionEnum); 43 | } 44 | 45 | public SessionCollection Sessions 46 | { 47 | get 48 | { 49 | return _Sessions; 50 | } 51 | } 52 | 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioSessionState.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | //using System.Linq; 25 | using System.Text; 26 | 27 | namespace CoreAudioApi 28 | { 29 | public enum AudioSessionState 30 | { 31 | AudioSessionStateInactive = 0, 32 | AudioSessionStateActive = 1, 33 | AudioSessionStateExpired = 2 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /SystemVolumeControl/AudioVolumeNotificationData.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | public class AudioVolumeNotificationData 29 | { 30 | private Guid _EventContext; 31 | private bool _Muted; 32 | private float _MasterVolume; 33 | private int _Channels; 34 | private float[] _ChannelVolume; 35 | 36 | public Guid EventContext 37 | { 38 | get 39 | { 40 | return _EventContext; 41 | } 42 | } 43 | 44 | public bool Muted 45 | { 46 | get 47 | { 48 | return _Muted; 49 | } 50 | } 51 | 52 | public float MasterVolume 53 | { 54 | get 55 | { 56 | return _MasterVolume; 57 | } 58 | } 59 | public int Channels 60 | { 61 | get 62 | { 63 | return _Channels; 64 | } 65 | } 66 | 67 | public float[] ChannelVolume 68 | { 69 | get 70 | { 71 | return _ChannelVolume; 72 | } 73 | } 74 | public AudioVolumeNotificationData(Guid eventContext, bool muted, float masterVolume, float[] channelVolume) 75 | { 76 | _EventContext = eventContext; 77 | _Muted = muted; 78 | _MasterVolume = masterVolume; 79 | _Channels = channelVolume.Length; 80 | _ChannelVolume = channelVolume; 81 | } 82 | } 83 | } 84 | -------------------------------------------------------------------------------- /SystemVolumeControl/Blob.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | internal struct Blob 30 | { 31 | public int Length; 32 | public IntPtr Data; 33 | 34 | //Code Should Compile at warning level4 without any warnings, 35 | //However this struct will give us Warning CS0649: Field [Fieldname] 36 | //is never assigned to, and will always have its default value 37 | //You can disable CS0649 in the project options but that will disable 38 | //the warning for the whole project, it's a nice warning and we do want 39 | //it in other places so we make a nice dummy function to keep the compiler 40 | //happy. 41 | private void FixCS0649() 42 | { 43 | Length = 0; 44 | Data = IntPtr.Zero; 45 | } 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /SystemVolumeControl/CLSCTX.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi.Interfaces 27 | { 28 | [Flags] 29 | internal enum CLSCTX : uint 30 | { 31 | INPROC_SERVER = 0x1, 32 | INPROC_HANDLER = 0x2, 33 | LOCAL_SERVER = 0x4, 34 | INPROC_SERVER16 = 0x8, 35 | REMOTE_SERVER = 0x10, 36 | INPROC_HANDLER16 = 0x20, 37 | RESERVED1 = 0x40, 38 | RESERVED2 = 0x80, 39 | RESERVED3 = 0x100, 40 | RESERVED4 = 0x200, 41 | NO_CODE_DOWNLOAD = 0x400, 42 | RESERVED5 = 0x800, 43 | NO_CUSTOM_MARSHAL = 0x1000, 44 | ENABLE_CODE_DOWNLOAD = 0x2000, 45 | NO_FAILURE_LOG = 0x4000, 46 | DISABLE_AAA = 0x8000, 47 | ENABLE_AAA = 0x10000, 48 | FROM_DEFAULT_CONTEXT = 0x20000, 49 | INPROC = INPROC_SERVER | INPROC_HANDLER, 50 | SERVER = INPROC_SERVER | LOCAL_SERVER | REMOTE_SERVER, 51 | ALL = SERVER | INPROC_HANDLER 52 | } 53 | } 54 | -------------------------------------------------------------------------------- /SystemVolumeControl/EDataFlow.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | public enum EDataFlow 29 | { 30 | eRender = 0, 31 | eCapture = 1, 32 | eAll = 2 , 33 | EDataFlow_enum_count =3 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /SystemVolumeControl/EDeviceState.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | [Flags] 29 | public enum EDeviceState : uint 30 | { 31 | DEVICE_STATE_ACTIVE = 0x00000001, 32 | DEVICE_STATE_UNPLUGGED = 0x00000002, 33 | DEVICE_STATE_NOTPRESENT = 0x00000004, 34 | DEVICE_STATEMASK_ALL = 0x00000007 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /SystemVolumeControl/EEndpointHardwareSupport.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | [Flags] 29 | public enum EEndpointHardwareSupport 30 | { 31 | Volume = 0x00000001, 32 | Mute = 0x00000002, 33 | Meter = 0x00000004 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /SystemVolumeControl/ERole.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | public enum ERole 29 | { 30 | eConsole =0, 31 | eMultimedia =1, 32 | eCommunications=2, 33 | ERole_enum_count=3 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioEndpointVolume.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("5CDF2C82-841E-4546-9722-0CF74078229A"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IAudioEndpointVolume 32 | { 33 | [PreserveSig] 34 | int RegisterControlChangeNotify(IAudioEndpointVolumeCallback pNotify); 35 | [PreserveSig] 36 | int UnregisterControlChangeNotify(IAudioEndpointVolumeCallback pNotify); 37 | [PreserveSig] 38 | int GetChannelCount(out int pnChannelCount); 39 | [PreserveSig] 40 | int SetMasterVolumeLevel(float fLevelDB, Guid pguidEventContext); 41 | [PreserveSig] 42 | int SetMasterVolumeLevelScalar(float fLevel, Guid pguidEventContext); 43 | [PreserveSig] 44 | int GetMasterVolumeLevel(out float pfLevelDB); 45 | [PreserveSig] 46 | int GetMasterVolumeLevelScalar(out float pfLevel); 47 | [PreserveSig] 48 | int SetChannelVolumeLevel(uint nChannel, float fLevelDB, Guid pguidEventContext); 49 | [PreserveSig] 50 | int SetChannelVolumeLevelScalar(uint nChannel, float fLevel, Guid pguidEventContext); 51 | [PreserveSig] 52 | int GetChannelVolumeLevel(uint nChannel, out float pfLevelDB); 53 | [PreserveSig] 54 | int GetChannelVolumeLevelScalar(uint nChannel, out float pfLevel); 55 | [PreserveSig] 56 | int SetMute([MarshalAs(UnmanagedType.Bool)] Boolean bMute, Guid pguidEventContext); 57 | [PreserveSig] 58 | int GetMute(out bool pbMute); 59 | [PreserveSig] 60 | int GetVolumeStepInfo(out uint pnStep, out uint pnStepCount); 61 | [PreserveSig] 62 | int VolumeStepUp(Guid pguidEventContext); 63 | [PreserveSig] 64 | int VolumeStepDown(Guid pguidEventContext); 65 | [PreserveSig] 66 | int QueryHardwareSupport(out uint pdwHardwareSupportMask); 67 | [PreserveSig] 68 | int GetVolumeRange(out float pflVolumeMindB, out float pflVolumeMaxdB, out float pflVolumeIncrementdB); 69 | } 70 | } 71 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioEndpointVolumeCallback.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("657804FA-D6AD-4496-8A60-352752AF4F89"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IAudioEndpointVolumeCallback 32 | { 33 | [PreserveSig] int OnNotify(IntPtr pNotifyData); 34 | }; 35 | 36 | } 37 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioMeterInformation.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("C02216F6-8C67-4B5B-9D00-D008E73E0064"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IAudioMeterInformation 32 | { 33 | [PreserveSig] 34 | int GetPeakValue(out float pfPeak); 35 | [PreserveSig] 36 | int GetMeteringChannelCount(out int pnChannelCount); 37 | [PreserveSig] 38 | int GetChannelsPeakValues( int u32ChannelCount,[In] IntPtr afPeakValues); 39 | [PreserveSig] 40 | int QueryHardwareSupport( out int pdwHardwareSupportMask); 41 | }; 42 | } 43 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioPeakMeter.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | 28 | namespace CoreAudioApi.Interfaces 29 | { 30 | [Guid("DD79923C-0599-45e0-B8B6-C8DF7DB6E796"), 31 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 32 | internal interface IAudioPeakMeter 33 | { 34 | int GetChannelCount( out int pcChannels); 35 | int GetLevel( int Channel, out float level); 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioSessionControl2.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("bfb7ff88-7239-4fc9-8fa2-07c950be9c6d"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | interface IAudioSessionControl2 32 | { 33 | //IAudioSession functions 34 | [PreserveSig] 35 | int GetState(out AudioSessionState state); 36 | [PreserveSig] 37 | int GetDisplayName(out IntPtr name); 38 | [PreserveSig] 39 | int SetDisplayName(string value, Guid EventContext); 40 | [PreserveSig] 41 | int GetIconPath(out IntPtr Path); 42 | [PreserveSig] 43 | int SetIconPath(string Value, Guid EventContext); 44 | [PreserveSig] 45 | int GetGroupingParam(out Guid GroupingParam); 46 | [PreserveSig] 47 | int SetGroupingParam(Guid Override, Guid Eventcontext); 48 | [PreserveSig] 49 | int RegisterAudioSessionNotification(IAudioSessionEvents NewNotifications); 50 | [PreserveSig] 51 | int UnregisterAudioSessionNotification(IAudioSessionEvents NewNotifications); 52 | //IAudioSession2 functions 53 | [PreserveSig] 54 | int GetSessionIdentifier( out IntPtr retVal); 55 | [PreserveSig] 56 | int GetSessionInstanceIdentifier( out IntPtr retVal); 57 | [PreserveSig] 58 | int GetProcessId( out UInt32 retvVal); 59 | [PreserveSig] 60 | int IsSystemSoundsSession(); 61 | [PreserveSig] 62 | int SetDuckingPreference( bool optOut); 63 | 64 | 65 | } 66 | } 67 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioSessionEnumerator.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System.Runtime.InteropServices; 24 | using System; 25 | namespace CoreAudioApi.Interfaces 26 | { 27 | [Guid("E2F5BB11-0570-40CA-ACDD-3AA01277DEE8"), 28 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 29 | internal interface IAudioSessionEnumerator 30 | { 31 | int GetCount( out int SessionCount); 32 | int GetSession( int SessionCount,out IAudioSessionControl2 Session ); 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioSessionEvents.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("24918ACC-64B3-37C1-8CA9-74A66E9957A8"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | public interface IAudioSessionEvents 32 | { 33 | [PreserveSig] 34 | int OnDisplayNameChanged( [MarshalAs(UnmanagedType.LPWStr)] string NewDisplayName, Guid EventContext ); 35 | [PreserveSig] 36 | int OnIconPathChanged( [MarshalAs(UnmanagedType.LPWStr)] string NewIconPath, Guid EventContext ); 37 | [PreserveSig] 38 | int OnSimpleVolumeChanged( float NewVolume,bool newMute, Guid EventContext ); 39 | [PreserveSig] 40 | int OnChannelVolumeChanged( UInt32 ChannelCount, IntPtr NewChannelVolumeArray, UInt32 ChangedChannel, Guid EventContext ); 41 | [PreserveSig] 42 | int OnGroupingParamChanged( Guid NewGroupingParam, Guid EventContext ); 43 | [PreserveSig] 44 | int OnStateChanged( AudioSessionState NewState); 45 | [PreserveSig] 46 | int OnSessionDisconnected( AudioSessionDisconnectReason DisconnectReason); 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /SystemVolumeControl/IAudioSessionManager2.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | //using System.Linq; 25 | using System.Text; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi.Interfaces 29 | { 30 | [Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F"), 31 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 32 | interface IAudioSessionManager2 33 | { 34 | [PreserveSig] 35 | int GetAudioSessionControl(ref Guid AudioSessionGuid, UInt32 StreamFlags, IntPtr ISessionControl ); 36 | [PreserveSig] 37 | int GetSimpleAudioVolume(ref Guid AudioSessionGuid, UInt32 StreamFlags, IntPtr /*ISimpleAudioVolume*/ SimpleAudioVolume); 38 | [PreserveSig] 39 | int GetSessionEnumerator(out IAudioSessionEnumerator SessionEnum); 40 | [PreserveSig] 41 | int RegisterSessionNotification( IntPtr IAudioSessionNotification ); 42 | [PreserveSig] 43 | int UnregisterSessionNotification( IntPtr IAudioSessionNotification ); 44 | [PreserveSig] 45 | int RegisterDuckNotification( string sessionID, IntPtr IAudioVolumeDuckNotification); 46 | [PreserveSig] 47 | int UnregisterDuckNotification(IntPtr IAudioVolumeDuckNotification); 48 | }; 49 | } 50 | -------------------------------------------------------------------------------- /SystemVolumeControl/IMMDevice.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("D666063F-1587-4E43-81F1-B948E807363F"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IMMDevice 32 | { 33 | [PreserveSig] 34 | int Activate(ref Guid iid, CLSCTX dwClsCtx, IntPtr pActivationParams, [MarshalAs(UnmanagedType.IUnknown)] out object ppInterface); 35 | [PreserveSig] 36 | int OpenPropertyStore(EStgmAccess stgmAccess, out IPropertyStore propertyStore); 37 | [PreserveSig] 38 | int GetId([MarshalAs(UnmanagedType.LPWStr)] out string ppstrId); 39 | [PreserveSig] 40 | int GetState(out EDeviceState pdwState); 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /SystemVolumeControl/IMMDeviceCollection.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("0BD7A1BE-7A1A-44DB-8397-CC5392387B5E"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IMMDeviceCollection 32 | { 33 | [PreserveSig] 34 | int GetCount(out uint pcDevices); 35 | [PreserveSig] 36 | int Item(uint nDevice, out IMMDevice Device); 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /SystemVolumeControl/IMMDeviceEnumerator.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IMMDeviceEnumerator 32 | { 33 | [PreserveSig] 34 | int EnumAudioEndpoints(EDataFlow dataFlow, EDeviceState StateMask, out IMMDeviceCollection device); 35 | [PreserveSig] 36 | int GetDefaultAudioEndpoint(EDataFlow dataFlow, ERole role, out IMMDevice ppEndpoint); 37 | [PreserveSig] 38 | int GetDevice(string pwstrId, out IMMDevice ppDevice); 39 | [PreserveSig] 40 | int RegisterEndpointNotificationCallback(IntPtr pClient); 41 | [PreserveSig] 42 | int UnregisterEndpointNotificationCallback(IntPtr pClient); 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /SystemVolumeControl/IMMEndpoint.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("1BE09788-6894-4089-8586-9A2A6C265AC5"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IMMEndpoint 32 | { 33 | [PreserveSig] 34 | int GetDataFlow(out EDataFlow pDataFlow); 35 | }; 36 | } 37 | -------------------------------------------------------------------------------- /SystemVolumeControl/IPropertyStore.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | namespace CoreAudioApi.Interfaces 28 | { 29 | [Guid("886d8eeb-8cf2-4446-8d02-cdba1dbdcf99"), 30 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 31 | internal interface IPropertyStore 32 | { 33 | [PreserveSig] 34 | int GetCount( out Int32 count); 35 | [PreserveSig] 36 | int GetAt( int iProp, out PropertyKey pkey); 37 | [PreserveSig] 38 | int GetValue(ref PropertyKey key, out PropVariant pv); 39 | [PreserveSig] 40 | int SetValue(ref PropertyKey key, ref PropVariant propvar); 41 | [PreserveSig] 42 | int Commit( ); 43 | }; 44 | } 45 | -------------------------------------------------------------------------------- /SystemVolumeControl/ISimpleAudioVolume.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | 27 | 28 | namespace CoreAudioApi.Interfaces 29 | { 30 | [Guid("87CE5498-68D6-44E5-9215-6DA47EF883D8"), 31 | InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] 32 | internal interface ISimpleAudioVolume 33 | { 34 | [PreserveSig] 35 | int SetMasterVolume( float fLevel,ref Guid EventContext); 36 | [PreserveSig] 37 | int GetMasterVolume( out float pfLevel); 38 | [PreserveSig] 39 | int SetMute( bool bMute, ref Guid EventContext) ; 40 | [PreserveSig] 41 | int GetMute( out bool bMute); 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /SystemVolumeControl/MMDevice.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using CoreAudioApi.Interfaces; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class MMDevice 31 | { 32 | #region Variables 33 | private IMMDevice _RealDevice; 34 | private PropertyStore _PropertyStore; 35 | private AudioMeterInformation _AudioMeterInformation; 36 | private AudioEndpointVolume _AudioEndpointVolume; 37 | private AudioSessionManager _AudioSessionManager; 38 | 39 | #endregion 40 | 41 | #region Guids 42 | private static Guid IID_IAudioMeterInformation = typeof(IAudioMeterInformation).GUID; 43 | private static Guid IID_IAudioEndpointVolume = typeof(IAudioEndpointVolume).GUID; 44 | private static Guid IID_IAudioSessionManager = typeof(IAudioSessionManager2).GUID; 45 | #endregion 46 | 47 | #region Init 48 | private void GetPropertyInformation() 49 | { 50 | IPropertyStore propstore; 51 | Marshal.ThrowExceptionForHR(_RealDevice.OpenPropertyStore(EStgmAccess.STGM_READ, out propstore)); 52 | _PropertyStore = new PropertyStore(propstore); 53 | } 54 | 55 | private void GetAudioSessionManager() 56 | { 57 | object result; 58 | Marshal.ThrowExceptionForHR(_RealDevice.Activate(ref IID_IAudioSessionManager, CLSCTX.ALL, IntPtr.Zero, out result)); 59 | _AudioSessionManager = new AudioSessionManager(result as IAudioSessionManager2); 60 | } 61 | 62 | private void GetAudioMeterInformation() 63 | { 64 | object result; 65 | Marshal.ThrowExceptionForHR( _RealDevice.Activate(ref IID_IAudioMeterInformation, CLSCTX.ALL, IntPtr.Zero, out result)); 66 | _AudioMeterInformation = new AudioMeterInformation( result as IAudioMeterInformation); 67 | } 68 | 69 | private void GetAudioEndpointVolume() 70 | { 71 | object result; 72 | Marshal.ThrowExceptionForHR(_RealDevice.Activate(ref IID_IAudioEndpointVolume, CLSCTX.ALL, IntPtr.Zero, out result)); 73 | _AudioEndpointVolume = new AudioEndpointVolume(result as IAudioEndpointVolume); 74 | } 75 | 76 | #endregion 77 | 78 | #region Properties 79 | 80 | public AudioSessionManager AudioSessionManager 81 | { 82 | get 83 | { 84 | if (_AudioSessionManager == null) 85 | GetAudioSessionManager(); 86 | 87 | return _AudioSessionManager; 88 | } 89 | } 90 | 91 | public AudioMeterInformation AudioMeterInformation 92 | { 93 | get 94 | { 95 | if (_AudioMeterInformation == null) 96 | GetAudioMeterInformation(); 97 | 98 | return _AudioMeterInformation; 99 | } 100 | } 101 | 102 | public AudioEndpointVolume AudioEndpointVolume 103 | { 104 | get 105 | { 106 | if (_AudioEndpointVolume == null) 107 | GetAudioEndpointVolume(); 108 | 109 | return _AudioEndpointVolume; 110 | } 111 | } 112 | 113 | public PropertyStore Properties 114 | { 115 | get 116 | { 117 | if (_PropertyStore == null) 118 | GetPropertyInformation(); 119 | return _PropertyStore; 120 | } 121 | } 122 | 123 | public string FriendlyName 124 | { 125 | get 126 | { 127 | if (_PropertyStore == null) 128 | GetPropertyInformation(); 129 | if (_PropertyStore.Contains(PKEY.PKEY_DeviceInterface_FriendlyName)) 130 | { 131 | return (string)_PropertyStore[PKEY.PKEY_DeviceInterface_FriendlyName].Value; 132 | } 133 | else 134 | return "Unknown"; 135 | } 136 | } 137 | 138 | 139 | public string ID 140 | { 141 | get 142 | { 143 | string Result; 144 | Marshal.ThrowExceptionForHR(_RealDevice.GetId(out Result)); 145 | return Result; 146 | } 147 | } 148 | 149 | public EDataFlow DataFlow 150 | { 151 | get 152 | { 153 | EDataFlow Result; 154 | IMMEndpoint ep = _RealDevice as IMMEndpoint ; 155 | ep.GetDataFlow(out Result); 156 | return Result; 157 | } 158 | } 159 | 160 | public EDeviceState State 161 | { 162 | get 163 | { 164 | EDeviceState Result; 165 | Marshal.ThrowExceptionForHR(_RealDevice.GetState(out Result)); 166 | return Result; 167 | 168 | } 169 | } 170 | #endregion 171 | 172 | #region Constructor 173 | internal MMDevice(IMMDevice realDevice) 174 | { 175 | _RealDevice = realDevice; 176 | } 177 | #endregion 178 | 179 | } 180 | } 181 | -------------------------------------------------------------------------------- /SystemVolumeControl/MMDeviceCollection.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | using CoreAudioApi.Interfaces; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class MMDeviceCollection 31 | { 32 | private IMMDeviceCollection _MMDeviceCollection; 33 | 34 | public int Count 35 | { 36 | get 37 | { 38 | uint result; 39 | Marshal.ThrowExceptionForHR(_MMDeviceCollection.GetCount(out result)); 40 | return (int)result; 41 | } 42 | } 43 | 44 | public MMDevice this[int index] 45 | { 46 | get 47 | { 48 | IMMDevice result; 49 | _MMDeviceCollection.Item((uint)index, out result); 50 | return new MMDevice(result); 51 | } 52 | } 53 | 54 | internal MMDeviceCollection(IMMDeviceCollection parent) 55 | { 56 | _MMDeviceCollection = parent; 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /SystemVolumeControl/MMDeviceEnumerator.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using System.Runtime.InteropServices; 26 | using CoreAudioApi.Interfaces; 27 | 28 | namespace CoreAudioApi 29 | { 30 | //Marked as internal, since on its own its no good 31 | [ComImport, Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")] 32 | internal class _MMDeviceEnumerator 33 | { 34 | } 35 | 36 | //Small wrapper class 37 | public class MMDeviceEnumerator 38 | { 39 | private IMMDeviceEnumerator _realEnumerator = new _MMDeviceEnumerator() as IMMDeviceEnumerator; 40 | 41 | public MMDeviceCollection EnumerateAudioEndPoints(EDataFlow dataFlow, EDeviceState dwStateMask) 42 | { 43 | IMMDeviceCollection result; 44 | Marshal.ThrowExceptionForHR(_realEnumerator.EnumAudioEndpoints(dataFlow,dwStateMask,out result)); 45 | return new MMDeviceCollection(result); 46 | } 47 | 48 | public MMDevice GetDefaultAudioEndpoint(EDataFlow dataFlow, ERole role) 49 | { 50 | IMMDevice _Device = null; 51 | Marshal.ThrowExceptionForHR(((IMMDeviceEnumerator)_realEnumerator).GetDefaultAudioEndpoint(dataFlow, role, out _Device)); 52 | return new MMDevice(_Device); 53 | } 54 | 55 | public MMDevice GetDevice(string ID) 56 | { 57 | IMMDevice _Device = null; 58 | Marshal.ThrowExceptionForHR(((IMMDeviceEnumerator)_realEnumerator).GetDevice(ID, out _Device)); 59 | return new MMDevice(_Device); 60 | } 61 | 62 | public MMDeviceEnumerator() 63 | { 64 | if (System.Environment.OSVersion.Version.Major < 6) 65 | { 66 | throw new NotSupportedException("This functionality is only supported on Windows Vista or newer."); 67 | } 68 | } 69 | } 70 | } 71 | -------------------------------------------------------------------------------- /SystemVolumeControl/PKEY.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | public static class PKEY 29 | { 30 | public static readonly Guid PKEY_DeviceInterface_FriendlyName = new Guid( 0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0); 31 | public static readonly Guid PKEY_AudioEndpoint_FormFactor = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 32 | public static readonly Guid PKEY_AudioEndpoint_ControlPanelPageProvider = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 33 | public static readonly Guid PKEY_AudioEndpoint_Association = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 34 | public static readonly Guid PKEY_AudioEndpoint_PhysicalSpeakers = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 35 | public static readonly Guid PKEY_AudioEndpoint_GUID = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 36 | public static readonly Guid PKEY_AudioEndpoint_Disable_SysFx = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 37 | public static readonly Guid PKEY_AudioEndpoint_FullRangeSpeakers = new Guid( 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x0e); 38 | public static readonly Guid PKEY_AudioEngine_DeviceFormat = new Guid(0xf19f064d, 0x82c, 0x4e27, 0xbc, 0x73, 0x68, 0x82, 0xa1, 0xbb, 0x8e, 0x4c); 39 | 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /SystemVolumeControl/PropVariant.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | using System.Runtime.InteropServices.ComTypes; 27 | using System.Runtime.InteropServices; 28 | using CoreAudioApi.Interfaces; 29 | 30 | namespace CoreAudioApi 31 | { 32 | [StructLayout(LayoutKind.Explicit)] 33 | public struct PropVariant 34 | { 35 | [FieldOffset(0)] short vt; 36 | [FieldOffset(2)] short wReserved1; 37 | [FieldOffset(4)] short wReserved2; 38 | [FieldOffset(6)] short wReserved3; 39 | [FieldOffset(8)] sbyte cVal; 40 | [FieldOffset(8)] byte bVal; 41 | [FieldOffset(8)] short iVal; 42 | [FieldOffset(8)] ushort uiVal; 43 | [FieldOffset(8)] int lVal; 44 | [FieldOffset(8)] uint ulVal; 45 | [FieldOffset(8)] long hVal; 46 | [FieldOffset(8)] ulong uhVal; 47 | [FieldOffset(8)] float fltVal; 48 | [FieldOffset(8)] double dblVal; 49 | [FieldOffset(8)] Blob blobVal; 50 | [FieldOffset(8)] DateTime date; 51 | [FieldOffset(8)] bool boolVal; 52 | [FieldOffset(8)] int scode; 53 | [FieldOffset(8)] System.Runtime.InteropServices.ComTypes.FILETIME filetime; 54 | [FieldOffset(8)] IntPtr everything_else; 55 | 56 | //I'm sure there is a more efficient way to do this but this works ..for now.. 57 | internal byte[] GetBlob() 58 | { 59 | byte[] Result = new byte[blobVal.Length]; 60 | for (int i = 0; i < blobVal.Length; i++) 61 | { 62 | Result[i] = Marshal.ReadByte((IntPtr) ((long)(blobVal.Data) + i)); 63 | } 64 | return Result; 65 | } 66 | 67 | public object Value 68 | { 69 | get 70 | { 71 | VarEnum ve = (VarEnum)vt; 72 | switch (ve) 73 | { 74 | case VarEnum.VT_I1: 75 | return bVal; 76 | case VarEnum.VT_I2: 77 | return iVal; 78 | case VarEnum.VT_I4: 79 | return lVal; 80 | case VarEnum.VT_I8: 81 | return hVal; 82 | case VarEnum.VT_INT: 83 | return iVal; 84 | case VarEnum.VT_UI4: 85 | return ulVal; 86 | case VarEnum.VT_LPWSTR: 87 | return Marshal.PtrToStringUni(everything_else); 88 | case VarEnum.VT_BLOB: 89 | return GetBlob(); 90 | } 91 | return "FIXME Type = " + ve.ToString(); 92 | } 93 | } 94 | 95 | } 96 | } 97 | -------------------------------------------------------------------------------- /SystemVolumeControl/PropertyKey.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi 27 | { 28 | public struct PropertyKey 29 | { 30 | public Guid fmtid; 31 | public int pid; 32 | }; 33 | 34 | } 35 | -------------------------------------------------------------------------------- /SystemVolumeControl/PropertyStore.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | using CoreAudioApi.Interfaces; 26 | using System.Runtime.InteropServices; 27 | 28 | namespace CoreAudioApi 29 | { 30 | /// 31 | /// Property Store class, only supports reading properties at the moment. 32 | /// 33 | public class PropertyStore 34 | { 35 | private IPropertyStore _Store; 36 | 37 | public int Count 38 | { 39 | get 40 | { 41 | int Result; 42 | Marshal.ThrowExceptionForHR(_Store.GetCount(out Result)); 43 | return Result; 44 | } 45 | } 46 | 47 | public PropertyStoreProperty this[int index] 48 | { 49 | get 50 | { 51 | PropVariant result; 52 | PropertyKey key = Get(index); 53 | Marshal.ThrowExceptionForHR(_Store.GetValue(ref key, out result)); 54 | return new PropertyStoreProperty(key, result); 55 | } 56 | } 57 | 58 | public bool Contains(Guid guid) 59 | { 60 | for (int i = 0; i < Count; i++) 61 | { 62 | PropertyKey key = Get(i); 63 | if (key.fmtid == guid) 64 | return true; 65 | } 66 | return false; 67 | } 68 | 69 | public PropertyStoreProperty this[Guid guid] 70 | { 71 | get 72 | { 73 | PropVariant result; 74 | for (int i = 0; i < Count; i++) 75 | { 76 | PropertyKey key = Get(i); 77 | if (key.fmtid == guid) 78 | { 79 | Marshal.ThrowExceptionForHR(_Store.GetValue(ref key, out result)); 80 | return new PropertyStoreProperty(key, result); 81 | } 82 | } 83 | return null; 84 | } 85 | } 86 | 87 | public PropertyKey Get(int index) 88 | { 89 | PropertyKey key; 90 | Marshal.ThrowExceptionForHR( _Store.GetAt(index, out key)); 91 | return key; 92 | } 93 | 94 | public PropVariant GetValue(int index) 95 | { 96 | PropVariant result; 97 | PropertyKey key = Get(index); 98 | Marshal.ThrowExceptionForHR(_Store.GetValue(ref key, out result)); 99 | return result; 100 | } 101 | 102 | internal PropertyStore(IPropertyStore store) 103 | { 104 | _Store = store; 105 | } 106 | } 107 | } 108 | -------------------------------------------------------------------------------- /SystemVolumeControl/PropertyStoreProperty.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | using System.Text; 26 | using CoreAudioApi.Interfaces; 27 | 28 | namespace CoreAudioApi 29 | { 30 | public class PropertyStoreProperty 31 | { 32 | private PropertyKey _PropertyKey; 33 | private PropVariant _PropValue; 34 | 35 | internal PropertyStoreProperty(PropertyKey key, PropVariant value) 36 | { 37 | _PropertyKey = key; 38 | _PropValue = value; 39 | } 40 | 41 | public PropertyKey Key 42 | { 43 | get 44 | { 45 | return _PropertyKey; 46 | } 47 | } 48 | 49 | public object Value 50 | { 51 | get 52 | { 53 | return _PropValue.Value; 54 | } 55 | } 56 | } 57 | } 58 | -------------------------------------------------------------------------------- /SystemVolumeControl/SessionCollection.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | //using System.Linq; 26 | using System.Text; 27 | using CoreAudioApi.Interfaces; 28 | using System.Runtime.InteropServices; 29 | 30 | namespace CoreAudioApi 31 | { 32 | public class SessionCollection 33 | { 34 | IAudioSessionEnumerator _AudioSessionEnumerator; 35 | internal SessionCollection(IAudioSessionEnumerator realEnumerator) 36 | { 37 | _AudioSessionEnumerator = realEnumerator; 38 | } 39 | 40 | public AudioSessionControl this[int index] 41 | { 42 | get 43 | { 44 | IAudioSessionControl2 _Result; 45 | Marshal.ThrowExceptionForHR(_AudioSessionEnumerator.GetSession(index, out _Result)); 46 | return new AudioSessionControl(_Result); 47 | } 48 | } 49 | 50 | public int Count 51 | { 52 | get 53 | { 54 | int result; 55 | Marshal.ThrowExceptionForHR(_AudioSessionEnumerator.GetCount(out result)); 56 | return (int)result; 57 | } 58 | } 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /SystemVolumeControl/SimpleAudioVolume.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | 23 | using System; 24 | using System.Collections.Generic; 25 | //using System.Linq; 26 | using System.Text; 27 | using CoreAudioApi.Interfaces; 28 | using System.Runtime.InteropServices; 29 | 30 | namespace CoreAudioApi 31 | { 32 | public class SimpleAudioVolume 33 | { 34 | ISimpleAudioVolume _SimpleAudioVolume; 35 | internal SimpleAudioVolume(ISimpleAudioVolume realSimpleVolume) 36 | { 37 | _SimpleAudioVolume = realSimpleVolume; 38 | } 39 | 40 | public float MasterVolume 41 | { 42 | get 43 | { 44 | float ret; 45 | Marshal.ThrowExceptionForHR(_SimpleAudioVolume.GetMasterVolume(out ret)); 46 | return ret; 47 | } 48 | set 49 | { 50 | Guid Empty = Guid.Empty; 51 | Marshal.ThrowExceptionForHR(_SimpleAudioVolume.SetMasterVolume(value, ref Empty)); 52 | } 53 | } 54 | 55 | public bool Mute 56 | { 57 | get 58 | { 59 | bool ret; 60 | Marshal.ThrowExceptionForHR(_SimpleAudioVolume.GetMute(out ret)); 61 | return ret; 62 | } 63 | set 64 | { 65 | Guid Empty = Guid.Empty; 66 | Marshal.ThrowExceptionForHR(_SimpleAudioVolume.SetMute(value, ref Empty)); 67 | } 68 | } 69 | } 70 | } 71 | -------------------------------------------------------------------------------- /SystemVolumeControl/eStgmAccess.cs: -------------------------------------------------------------------------------- 1 | /* 2 | LICENSE 3 | ------- 4 | Copyright (C) 2007-2010 Ray Molenkamp 5 | 6 | This source code is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this source code or the software it produces. 9 | 10 | Permission is granted to anyone to use this source code for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this source code must not be misrepresented; you must not 15 | claim that you wrote the original source code. If you use this source code 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 2. Altered source versions must be plainly marked as such, and must not be 19 | misrepresented as being the original source code. 20 | 3. This notice may not be removed or altered from any source distribution. 21 | */ 22 | using System; 23 | using System.Collections.Generic; 24 | using System.Text; 25 | 26 | namespace CoreAudioApi.Interfaces 27 | { 28 | internal enum EStgmAccess 29 | { 30 | STGM_READ = 0x00000000, 31 | STGM_WRITE = 0x00000001, 32 | STGM_READWRITE = 0x00000002 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /bin/Debug/CoreAudioApi.exe: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yuxianqiang/CoreAudioApi/6b27c83b59dcec1fd257b89555130a8914be9aef/bin/Debug/CoreAudioApi.exe -------------------------------------------------------------------------------- /bin/Debug/CoreAudioApi.pdb: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yuxianqiang/CoreAudioApi/6b27c83b59dcec1fd257b89555130a8914be9aef/bin/Debug/CoreAudioApi.pdb 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