C# 控制容积混合器
我想控制其他应用程序卷(firefox) 我可以用C# 控制容积混合器,c#,.net,vb.net,winforms,C#,.net,Vb.net,Winforms,我想控制其他应用程序卷(firefox) 我可以用混音器 混音器的库是什么?这里是一个示例C#Console应用程序。这是基于。它仅适用于Windows 7及更高版本 using System; using System.Runtime.InteropServices; using System.Collections.Generic; namespace SetAppVolumne { class Program { static void Main(str
混音器
混音器的库是什么?这里是一个示例C#Console应用程序。这是基于。它仅适用于Windows 7及更高版本
using System;
using System.Runtime.InteropServices;
using System.Collections.Generic;
namespace SetAppVolumne
{
class Program
{
static void Main(string[] args)
{
const string app = "Mozilla Firefox";
foreach (string name in EnumerateApplications())
{
Console.WriteLine("name:" + name);
if (name == app)
{
// display mute state & volume level (% of master)
Console.WriteLine("Mute:" + GetApplicationMute(app));
Console.WriteLine("Volume:" + GetApplicationVolume(app));
// mute the application
SetApplicationMute(app, true);
// set the volume to half of master volume (50%)
SetApplicationVolume(app, 50);
}
}
}
public static float? GetApplicationVolume(string name)
{
ISimpleAudioVolume volume = GetVolumeObject(name);
if (volume == null)
return null;
float level;
volume.GetMasterVolume(out level);
return level * 100;
}
public static bool? GetApplicationMute(string name)
{
ISimpleAudioVolume volume = GetVolumeObject(name);
if (volume == null)
return null;
bool mute;
volume.GetMute(out mute);
return mute;
}
public static void SetApplicationVolume(string name, float level)
{
ISimpleAudioVolume volume = GetVolumeObject(name);
if (volume == null)
return;
Guid guid = Guid.Empty;
volume.SetMasterVolume(level / 100, ref guid);
}
public static void SetApplicationMute(string name, bool mute)
{
ISimpleAudioVolume volume = GetVolumeObject(name);
if (volume == null)
return;
Guid guid = Guid.Empty;
volume.SetMute(mute, ref guid);
}
public static IEnumerable<string> EnumerateApplications()
{
// get the speakers (1st render + multimedia) device
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator)(new MMDeviceEnumerator());
IMMDevice speakers;
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out speakers);
// activate the session manager. we need the enumerator
Guid IID_IAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
object o;
speakers.Activate(ref IID_IAudioSessionManager2, 0, IntPtr.Zero, out o);
IAudioSessionManager2 mgr = (IAudioSessionManager2)o;
// enumerate sessions for on this device
IAudioSessionEnumerator sessionEnumerator;
mgr.GetSessionEnumerator(out sessionEnumerator);
int count;
sessionEnumerator.GetCount(out count);
for (int i = 0; i < count; i++)
{
IAudioSessionControl ctl;
sessionEnumerator.GetSession(i, out ctl);
string dn;
ctl.GetDisplayName(out dn);
yield return dn;
Marshal.ReleaseComObject(ctl);
}
Marshal.ReleaseComObject(sessionEnumerator);
Marshal.ReleaseComObject(mgr);
Marshal.ReleaseComObject(speakers);
Marshal.ReleaseComObject(deviceEnumerator);
}
private static ISimpleAudioVolume GetVolumeObject(string name)
{
// get the speakers (1st render + multimedia) device
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator)(new MMDeviceEnumerator());
IMMDevice speakers;
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out speakers);
// activate the session manager. we need the enumerator
Guid IID_IAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
object o;
speakers.Activate(ref IID_IAudioSessionManager2, 0, IntPtr.Zero, out o);
IAudioSessionManager2 mgr = (IAudioSessionManager2)o;
// enumerate sessions for on this device
IAudioSessionEnumerator sessionEnumerator;
mgr.GetSessionEnumerator(out sessionEnumerator);
int count;
sessionEnumerator.GetCount(out count);
// search for an audio session with the required name
// NOTE: we could also use the process id instead of the app name (with IAudioSessionControl2)
ISimpleAudioVolume volumeControl = null;
for (int i = 0; i < count; i++)
{
IAudioSessionControl ctl;
sessionEnumerator.GetSession(i, out ctl);
string dn;
ctl.GetDisplayName(out dn);
if (string.Compare(name, dn, StringComparison.OrdinalIgnoreCase) == 0)
{
volumeControl = ctl as ISimpleAudioVolume;
break;
}
Marshal.ReleaseComObject(ctl);
}
Marshal.ReleaseComObject(sessionEnumerator);
Marshal.ReleaseComObject(mgr);
Marshal.ReleaseComObject(speakers);
Marshal.ReleaseComObject(deviceEnumerator);
return volumeControl;
}
}
[ComImport]
[Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")]
internal class MMDeviceEnumerator
{
}
internal enum EDataFlow
{
eRender,
eCapture,
eAll,
EDataFlow_enum_count
}
internal enum ERole
{
eConsole,
eMultimedia,
eCommunications,
ERole_enum_count
}
[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IMMDeviceEnumerator
{
int NotImpl1();
[PreserveSig]
int GetDefaultAudioEndpoint(EDataFlow dataFlow, ERole role, out IMMDevice ppDevice);
// the rest is not implemented
}
[Guid("D666063F-1587-4E43-81F1-B948E807363F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IMMDevice
{
[PreserveSig]
int Activate(ref Guid iid, int dwClsCtx, IntPtr pActivationParams, [MarshalAs(UnmanagedType.IUnknown)] out object ppInterface);
// the rest is not implemented
}
[Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionManager2
{
int NotImpl1();
int NotImpl2();
[PreserveSig]
int GetSessionEnumerator(out IAudioSessionEnumerator SessionEnum);
// the rest is not implemented
}
[Guid("E2F5BB11-0570-40CA-ACDD-3AA01277DEE8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionEnumerator
{
[PreserveSig]
int GetCount(out int SessionCount);
[PreserveSig]
int GetSession(int SessionCount, out IAudioSessionControl Session);
}
[Guid("F4B1A599-7266-4319-A8CA-E70ACB11E8CD"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IAudioSessionControl
{
int NotImpl1();
[PreserveSig]
int GetDisplayName([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
// the rest is not implemented
}
[Guid("87CE5498-68D6-44E5-9215-6DA47EF883D8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface ISimpleAudioVolume
{
[PreserveSig]
int SetMasterVolume(float fLevel, ref Guid EventContext);
[PreserveSig]
int GetMasterVolume(out float pfLevel);
[PreserveSig]
int SetMute(bool bMute, ref Guid EventContext);
[PreserveSig]
int GetMute(out bool pbMute);
}
}
使用系统;
使用System.Runtime.InteropServices;
使用System.Collections.Generic;
名称空间setAppVolume
{
班级计划
{
静态void Main(字符串[]参数)
{
const string app=“Mozilla Firefox”;
foreach(枚举应用程序()中的字符串名称)
{
Console.WriteLine(“名称:”+名称);
if(name==app)
{
//显示静音状态和音量级别(主机的%)
Console.WriteLine(“静音:+GetApplicationMute(app));
Console.WriteLine(“卷:+GetApplicationVolume(app));
//使应用程序静音
SetApplicationMute(应用程序,true);
//将音量设置为主音量的一半(50%)
设置应用程序卷(应用程序,50);
}
}
}
公共静态浮点?GetApplicationVolume(字符串名称)
{
ISimpleAudioVolume=GetVolumeObject(名称);
如果(卷==null)
返回null;
浮子液位;
音量。GetMasterVolume(外部音量);
返回级别*100;
}
公共静态bool?GetApplicationMute(字符串名称)
{
ISimpleAudioVolume=GetVolumeObject(名称);
如果(卷==null)
返回null;
布尔静音;
音量。GetMute(输出静音);
返回静音;
}
公共静态void SetApplicationVolume(字符串名称、浮动级别)
{
ISimpleAudioVolume=GetVolumeObject(名称);
如果(卷==null)
返回;
Guid=Guid.Empty;
卷。SetMasterVolume(级别/100,参考guid);
}
公共静态void SetApplicationMute(字符串名称,布尔静音)
{
ISimpleAudioVolume=GetVolumeObject(名称);
如果(卷==null)
返回;
Guid=Guid.Empty;
音量设置静音(静音,参考guid);
}
公共静态IEnumerable枚举应用程序()
{
//获取扬声器(第一个渲染+多媒体)设备
IMMDeviceEnumerator deviceEnumerator=(IMMDeviceEnumerator)(新的MMDeviceEnumerator());
设备扬声器;
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender、ERole.eMultimedia、out扬声器);
//激活会话管理器。我们需要枚举器
Guid IID_IAudioSessionManager2=typeof(IAudioSessionManager2).Guid;
对象o;
扬声器。激活(参考IID_IAudioSessionManager2,0,输入零,输出o);
IAudioSessionManager2管理器=(IAudioSessionManager2)o;
//枚举此设备上的会话
IAudioSessionEnumerator sessionEnumerator;
经理GetSessionEnumerator(外部sessionEnumerator);
整数计数;
sessionnumerator.GetCount(out count);
for(int i=0;i