dlprows
4c1ccd9025
improved display name and icon support fixed issues with games like halo master chief collection, which threw exceptions when getting the display name
330 lines
12 KiB
C#
330 lines
12 KiB
C#
using System;
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using System.Data;
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using System.Runtime.InteropServices;
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namespace FocusVolumeControl.AudioSessions;
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[ComImport]
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[Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")]
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public class MMDeviceEnumerator
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{
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}
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public enum DataFlow
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{
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Render,
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Capture,
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All,
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}
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public enum Role
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{
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Console,
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Multimedia,
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Communications,
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}
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[Flags]
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public enum DeviceState : uint
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{
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Active = 1 << 0,
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Disabled = 1 << 1,
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NotPresent = 1 << 2,
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Unplugged = 1 << 3,
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MaskAll = 0xFu
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}
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[Guid("0BD7A1BE-7A1A-44DB-8397-CC5392387B5E")]
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[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IMMDeviceCollection
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{
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[PreserveSig]
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int GetCount(out int nDevices);
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[PreserveSig]
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int Item(int nDevice, out IMMDevice Device);
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}
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[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IMMDeviceEnumerator
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{
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[PreserveSig]
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int EnumAudioEndpoints(DataFlow dataFlow, DeviceState StateMask, out IMMDeviceCollection deviceCollection);
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[PreserveSig]
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int GetDefaultAudioEndpoint(DataFlow dataFlow, Role role, out IMMDevice device);
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}
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[Guid("D666063F-1587-4E43-81F1-B948E807363F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IMMDevice
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{
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[PreserveSig]
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int Activate(ref Guid iid, int dwClsCtx, IntPtr pActivationParams, [MarshalAs(UnmanagedType.IUnknown)] out object ppInterface);
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}
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[Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IAudioSessionManager2
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{
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int NotImpl1();
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int NotImpl2();
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[PreserveSig]
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int GetSessionEnumerator(out IAudioSessionEnumerator SessionEnum);
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}
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[Guid("E2F5BB11-0570-40CA-ACDD-3AA01277DEE8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IAudioSessionEnumerator
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{
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[PreserveSig]
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int GetCount(out int SessionCount);
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[PreserveSig]
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int GetSession(int SessionCount, out IAudioSessionControl2 Session);
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}
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[Guid("87CE5498-68D6-44E5-9215-6DA47EF883D8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface ISimpleAudioVolume
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{
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[PreserveSig]
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int SetMasterVolume(float fLevel, ref Guid EventContext);
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[PreserveSig]
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int GetMasterVolume(out float pfLevel);
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[PreserveSig]
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int SetMute(bool bMute, ref Guid EventContext);
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[PreserveSig]
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int GetMute(out bool pbMute);
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}
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[Guid("bfb7ff88-7239-4fc9-8fa2-07c950be9c6d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IAudioSessionControl2
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{
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// IAudioSessionControl
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[PreserveSig]
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int NotImpl0();
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[PreserveSig]
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int GetDisplayName([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
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[PreserveSig]
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int SetDisplayName([MarshalAs(UnmanagedType.LPWStr)] string Value, [MarshalAs(UnmanagedType.LPStruct)] Guid EventContext);
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[PreserveSig]
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int GetIconPath([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
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[PreserveSig]
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int SetIconPath([MarshalAs(UnmanagedType.LPWStr)] string Value, [MarshalAs(UnmanagedType.LPStruct)] Guid EventContext);
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[PreserveSig]
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int GetGroupingParam(out Guid pRetVal);
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[PreserveSig]
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int SetGroupingParam([MarshalAs(UnmanagedType.LPStruct)] Guid Override, [MarshalAs(UnmanagedType.LPStruct)] Guid EventContext);
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[PreserveSig]
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int NotImpl1();
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[PreserveSig]
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int NotImpl2();
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// IAudioSessionControl2
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[PreserveSig]
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int GetSessionIdentifier([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
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[PreserveSig]
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int GetSessionInstanceIdentifier([MarshalAs(UnmanagedType.LPWStr)] out string pRetVal);
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[PreserveSig]
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int GetProcessId(out int pRetVal);
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[PreserveSig]
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int IsSystemSoundsSession();
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[PreserveSig]
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int SetDuckingPreference(bool optOut);
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}
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// http://netcoreaudio.codeplex.com/SourceControl/latest#trunk/Code/CoreAudio/Interfaces/IAudioEndpointVolume.cs
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[Guid("5CDF2C82-841E-4546-9722-0CF74078229A"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IAudioEndpointVolume
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{
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[PreserveSig]
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int NotImpl1();
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[PreserveSig]
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int NotImpl2();
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/// <summary>
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/// Gets a count of the channels in the audio stream.
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/// </summary>
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/// <param name="channelCount">The number of channels.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetChannelCount(
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[Out][MarshalAs(UnmanagedType.U4)] out UInt32 channelCount);
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/// <summary>
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/// Sets the master volume level of the audio stream, in decibels.
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/// </summary>
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/// <param name="level">The new master volume level in decibels.</param>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int SetMasterVolumeLevel(
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[In][MarshalAs(UnmanagedType.R4)] float level,
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Sets the master volume level, expressed as a normalized, audio-tapered value.
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/// </summary>
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/// <param name="level">The new master volume level expressed as a normalized value between 0.0 and 1.0.</param>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int SetMasterVolumeLevelScalar(
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[In][MarshalAs(UnmanagedType.R4)] float level,
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Gets the master volume level of the audio stream, in decibels.
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/// </summary>
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/// <param name="level">The volume level in decibels.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetMasterVolumeLevel(
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[Out][MarshalAs(UnmanagedType.R4)] out float level);
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/// <summary>
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/// Gets the master volume level, expressed as a normalized, audio-tapered value.
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/// </summary>
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/// <param name="level">The volume level expressed as a normalized value between 0.0 and 1.0.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetMasterVolumeLevelScalar(
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[Out][MarshalAs(UnmanagedType.R4)] out float level);
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/// <summary>
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/// Sets the volume level, in decibels, of the specified channel of the audio stream.
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/// </summary>
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/// <param name="channelNumber">The channel number.</param>
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/// <param name="level">The new volume level in decibels.</param>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int SetChannelVolumeLevel(
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[In][MarshalAs(UnmanagedType.U4)] UInt32 channelNumber,
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[In][MarshalAs(UnmanagedType.R4)] float level,
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Sets the normalized, audio-tapered volume level of the specified channel in the audio stream.
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/// </summary>
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/// <param name="channelNumber">The channel number.</param>
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/// <param name="level">The new master volume level expressed as a normalized value between 0.0 and 1.0.</param>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int SetChannelVolumeLevelScalar(
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[In][MarshalAs(UnmanagedType.U4)] UInt32 channelNumber,
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[In][MarshalAs(UnmanagedType.R4)] float level,
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Gets the volume level, in decibels, of the specified channel in the audio stream.
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/// </summary>
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/// <param name="channelNumber">The zero-based channel number.</param>
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/// <param name="level">The volume level in decibels.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetChannelVolumeLevel(
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[In][MarshalAs(UnmanagedType.U4)] UInt32 channelNumber,
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[Out][MarshalAs(UnmanagedType.R4)] out float level);
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/// <summary>
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/// Gets the normalized, audio-tapered volume level of the specified channel of the audio stream.
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/// </summary>
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/// <param name="channelNumber">The zero-based channel number.</param>
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/// <param name="level">The volume level expressed as a normalized value between 0.0 and 1.0.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetChannelVolumeLevelScalar(
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[In][MarshalAs(UnmanagedType.U4)] UInt32 channelNumber,
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[Out][MarshalAs(UnmanagedType.R4)] out float level);
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/// <summary>
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/// Sets the muting state of the audio stream.
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/// </summary>
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/// <param name="isMuted">True to mute the stream, or false to unmute the stream.</param>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int SetMute(
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[In][MarshalAs(UnmanagedType.Bool)] Boolean isMuted,
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Gets the muting state of the audio stream.
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/// </summary>
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/// <param name="isMuted">The muting state. True if the stream is muted, false otherwise.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetMute(
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[Out][MarshalAs(UnmanagedType.Bool)] out Boolean isMuted);
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/// <summary>
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/// Gets information about the current step in the volume range.
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/// </summary>
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/// <param name="step">The current zero-based step index.</param>
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/// <param name="stepCount">The total number of steps in the volume range.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetVolumeStepInfo(
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[Out][MarshalAs(UnmanagedType.U4)] out UInt32 step,
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[Out][MarshalAs(UnmanagedType.U4)] out UInt32 stepCount);
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/// <summary>
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/// Increases the volume level by one step.
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/// </summary>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int VolumeStepUp(
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Decreases the volume level by one step.
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/// </summary>
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/// <param name="eventContext">A user context value that is passed to the notification callback.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int VolumeStepDown(
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[In][MarshalAs(UnmanagedType.LPStruct)] Guid eventContext);
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/// <summary>
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/// Queries the audio endpoint device for its hardware-supported functions.
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/// </summary>
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/// <param name="hardwareSupportMask">A hardware support mask that indicates the capabilities of the endpoint.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int QueryHardwareSupport(
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[Out][MarshalAs(UnmanagedType.U4)] out UInt32 hardwareSupportMask);
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/// <summary>
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/// Gets the volume range of the audio stream, in decibels.
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/// </summary>
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/// <param name="volumeMin">The minimum volume level in decibels.</param>
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/// <param name="volumeMax">The maximum volume level in decibels.</param>
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/// <param name="volumeStep">The volume increment level in decibels.</param>
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/// <returns>An HRESULT code indicating whether the operation passed of failed.</returns>
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[PreserveSig]
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int GetVolumeRange(
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[Out][MarshalAs(UnmanagedType.R4)] out float volumeMin,
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[Out][MarshalAs(UnmanagedType.R4)] out float volumeMax,
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[Out][MarshalAs(UnmanagedType.R4)] out float volumeStep);
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}
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