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//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER
// REMAINS UNCHANGED.
//
// Email: gustavo_franco@hotmail.com
//
// Copyright (C) 2005 Franco, Gustavo
//
using System;
using System.Runtime.InteropServices;
namespace WaveLib.AudioMixer
{
#region Aliases
using HMIXER = System.IntPtr;
using HWAVEIN = System.IntPtr;
using HWAVEOUT = System.IntPtr;
#endregion
#region Enums
internal enum FuncName
{
fnWaveInOpen,
fnWaveInClose,
fnWaveInGetDevCaps,
fnWaveOutOpen,
fnWaveOutClose,
fnWaveOutGetDevCaps,
fnMixerOpen,
fnMixerGetID,
fnMixerClose,
fnMixerGetLineInfo,
fnMixerGetLineControls,
fnMixerGetControlDetails,
fnMixerSetControlDetails,
fnMixerGetDevCaps,
fnCustom
};
#endregion
[Author("Gustavo Franco")]
public class Mixers
{
#region Constants Declaration
#endregion
#region Variables Declaration
private Mixer mRecording;
private Mixer mPlayback;
#endregion
#region Constructors
public Mixers() : this(false)
{
}
public Mixers(bool ignoreExceptions)
{
if (ignoreExceptions)
{
try
{
mRecording = new Mixer(MixerType.Recording);
}
catch (Exception)
{
mRecording = null;
}
}
else
mRecording = new Mixer(MixerType.Recording);
if (ignoreExceptions)
{
try
{
mPlayback = new Mixer(MixerType.Playback);
}
catch (Exception)
{
mPlayback = null;
}
}
else
mPlayback = new Mixer(MixerType.Playback);
}
#endregion
#region Properties
#region Recording
public Mixer Recording
{
get{return mRecording;}
}
#endregion
#region Playback
public Mixer Playback
{
get{return mPlayback;}
}
#endregion
#region Devices
public unsafe MixerDetails Devices
{
get
{
MMErrors errorCode = 0;
MixerDetails mixDetails = new MixerDetails();
HMIXER hMixer = IntPtr.Zero;
try
{
MIXERCAPS wic = new MIXERCAPS();
int iNumDevs = MixerNative.mixerGetNumDevs();
for (int i=0; i<iNumDevs; i++)
{
// Get info about the next device
errorCode = (MMErrors) MixerNative.mixerGetDevCaps(i, ref wic, Marshal.SizeOf(wic));
if (errorCode != MMErrors.MMSYSERR_NOERROR)
throw new MixerException(errorCode, GetErrorDescription(FuncName.fnMixerGetDevCaps, errorCode));
errorCode = (MMErrors) MixerNative.mixerOpen(out hMixer, i, IntPtr.Zero, IntPtr.Zero, 0);
if (errorCode != MMErrors.MMSYSERR_NOERROR)
throw new MixerException(errorCode, GetErrorDescription(FuncName.fnMixerOpen, errorCode));
MixerDetail mixDetail = new MixerDetail();
MIXERLINE mxl = new MIXERLINE();
mxl.cbStruct = (uint) Marshal.SizeOf(mxl);
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE.DST_WAVEIN;
if (MixerNative.mixerGetLineInfo(hMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE) == 0)
{
mixDetail.DeviceId = i;
mixDetail.MixerName = wic.szPname;
mixDetail.SupportWaveIn = true;
}
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE.DST_SPEAKERS;
if (MixerNative.mixerGetLineInfo(hMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE) == 0)
{
mixDetail.DeviceId = i;
mixDetail.MixerName = wic.szPname;
mixDetail.SupportWaveOut= true;
}
if (mixDetail.SupportWaveIn == true || mixDetail.SupportWaveOut == true )
mixDetails.Add(mixDetail);
}
}
finally
{
if (hMixer != IntPtr.Zero)
MixerNative.mixerClose(hMixer);
}
return mixDetails;
}
}
#endregion
#endregion
#region Methods
#endregion
#region GetErrorDescription
internal static string GetErrorDescription(FuncName funcName, MMErrors errorCode)
{
string errorDesc = "";
switch(funcName)
{
case FuncName.fnWaveOutOpen:
case FuncName.fnWaveInOpen:
switch(errorCode)
{
case MMErrors.MMSYSERR_ALLOCATED:
errorDesc = "Specified resource is already allocated.";
break;
case MMErrors.MMSYSERR_BADDEVICEID:
errorDesc = "Specified device identifier is out of range.";
break;
case MMErrors.MMSYSERR_NODRIVER:
errorDesc = "No device driver is present.";
break;
case MMErrors.MMSYSERR_NOMEM:
errorDesc = "Unable to allocate or lock memory.";
break;
case MMErrors.WAVERR_BADFORMAT:
errorDesc = "Attempted to open with an unsupported waveform-audio format.";
break;
case MMErrors.WAVERR_SYNC:
errorDesc = "The device is synchronous but waveOutOpen was called without using the WAVE_ALLOWSYNC flag.";
break;
}
break;
case FuncName.fnMixerOpen:
switch(errorCode)
{
case MMErrors.MMSYSERR_ALLOCATED:
errorDesc = "The specified resource is already allocated by the maximum number of clients possible.";
break;
case MMErrors.MMSYSERR_BADDEVICEID:
errorDesc = "The uMxId parameter specifies an invalid device identifier.";
break;
case MMErrors.MMSYSERR_INVALFLAG:
errorDesc = "One or more flags are invalid.";
break;
case MMErrors.MMSYSERR_INVALHANDLE:
errorDesc = "The uMxId parameter specifies an invalid handle.";
break;
case MMErrors.MMSYSERR_INVALPARAM:
errorDesc = "One or more parameters are invalid.";
break;
case MMErrors.MMSYSERR_NODRIVER:
errorDesc = "No device driver is present.";
break;
case MMErrors.MMSYSERR_NOMEM:
errorDesc = "Unable to allocate or lock memory.";
break;
}
break;
case FuncName.fnMixerGetID:
case FuncName.fnMixerGetLineInfo:
case FuncName.fnMixerGetLineControls:
case FuncName.fnMixerGetControlDetails:
case FuncName.fnMixerSetControlDetails:
switch(errorCode)
{
case MMErrors.MIXERR_INVALCONTROL:
errorDesc = "The control reference is invalid.";
break;
case MMErrors.MIXERR_INVALLINE:
errorDesc = "The audio line reference is invalid.";
break;
case MMErrors.MMSYSERR_BADDEVICEID:
errorDesc = "The hmxobj parameter specifies an invalid device identifier.";
break;
case MMErrors.MMSYSERR_INVALFLAG:
errorDesc = "One or more flags are invalid.";
break;
case MMErrors.MMSYSERR_INVALHANDLE:
errorDesc = "The hmxobj parameter specifies an invalid handle.";
break;
case MMErrors.MMSYSERR_INVALPARAM:
errorDesc = "One or more parameters are invalid.";
break;
case MMErrors.MMSYSERR_NODRIVER:
errorDesc = "No device driver is present.";
break;
}
break;
case FuncName.fnMixerClose:
switch(errorCode)
{
case MMErrors.MMSYSERR_INVALHANDLE:
errorDesc = "Specified device handle is invalid.";
break;
}
break;
case FuncName.fnWaveOutClose:
case FuncName.fnWaveInClose:
case FuncName.fnWaveInGetDevCaps:
case FuncName.fnWaveOutGetDevCaps:
case FuncName.fnMixerGetDevCaps:
switch(errorCode)
{
case MMErrors.MMSYSERR_BADDEVICEID:
errorDesc = "Specified device identifier is out of range.";
break;
case MMErrors.MMSYSERR_INVALHANDLE:
errorDesc = "Specified device handle is invalid.";
break;
case MMErrors.MMSYSERR_NODRIVER:
errorDesc = "No device driver is present.";
break;
case MMErrors.MMSYSERR_NOMEM:
errorDesc = "Unable to allocate or lock memory.";
break;
case MMErrors.WAVERR_STILLPLAYING:
errorDesc = "There are still buffers in the queue.";
break;
}
break;
case FuncName.fnCustom:
switch(errorCode)
{
case (MMErrors) 1000:
errorDesc = "Device Not Found.";
break;
}
break;
}
return errorDesc;
}
#endregion
}
}
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I started with programming about 19 years ago as a teenager, from my old Commodore moving to PC/Server environment Windows/UNIX SQLServer/Oracle doing gwBasic, QBasic, Turbo Pascal, Assembler, Turbo C, BC, Summer87, Clipper, Fox, SQL, C/C++, Pro*C, VB3/5/6, Java, and today loving C#.
Currently working as SDE on Failover Clustering team for Microsoft.
Passion for most programming languages and my kids Aidan&Nadia.
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