public MixerLine(IntPtr mixerHandle, int destinationIndex, int sourceIndex, MixerFlags mixerHandleType)
{
this.mixerHandle = mixerHandle;
this.mixerHandleType = mixerHandleType;
this.mixerLine = default(MixerInterop.MIXERLINE);
this.mixerLine.cbStruct = Marshal.SizeOf(this.mixerLine);
this.mixerLine.dwDestination = destinationIndex;
this.mixerLine.dwSource = sourceIndex;
MmException.Try(MixerInterop.mixerGetLineInfo(mixerHandle, ref this.mixerLine, mixerHandleType | MixerFlags.ListText), "mixerGetLineInfo");
}
public Mixer(int mixerIndex)
{
if (mixerIndex < 0 || mixerIndex >= Mixer.NumberOfDevices)
{
throw new ArgumentOutOfRangeException("mixerID");
}
this.caps = default(MixerInterop.MIXERCAPS);
MmException.Try(MixerInterop.mixerGetDevCaps((IntPtr)mixerIndex, ref this.caps, Marshal.SizeOf(this.caps)), "mixerGetDevCaps");
this.mixerHandle = (IntPtr)mixerIndex;
this.mixerHandleType = MixerFlags.Mixer;
}
public static MixerControl GetMixerControl(IntPtr mixerHandle, int nLineID, int controlId, int nChannels, MixerFlags mixerFlags)
{
MixerInterop.MIXERLINECONTROLS mIXERLINECONTROLS = default(MixerInterop.MIXERLINECONTROLS);
MixerInterop.MIXERCONTROL mIXERCONTROL = default(MixerInterop.MIXERCONTROL);
IntPtr intPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(mIXERCONTROL));
mIXERLINECONTROLS.cbStruct = Marshal.SizeOf(mIXERLINECONTROLS);
mIXERLINECONTROLS.cControls = 1;
mIXERLINECONTROLS.dwControlID = controlId;
mIXERLINECONTROLS.cbmxctrl = Marshal.SizeOf(mIXERCONTROL);
mIXERLINECONTROLS.pamxctrl = intPtr;
mIXERLINECONTROLS.dwLineID = nLineID;
MmResult mmResult = MixerInterop.mixerGetLineControls(mixerHandle, ref mIXERLINECONTROLS, MixerFlags.ListText | mixerFlags);
if (mmResult != MmResult.NoError)
{
Marshal.FreeCoTaskMem(intPtr);
throw new MmException(mmResult, "mixerGetLineControls");
}
mIXERCONTROL = (MixerInterop.MIXERCONTROL)Marshal.PtrToStructure(mIXERLINECONTROLS.pamxctrl, typeof(MixerInterop.MIXERCONTROL));
Marshal.FreeCoTaskMem(intPtr);
if (MixerControl.IsControlBoolean(mIXERCONTROL.dwControlType))
{
return(new BooleanMixerControl(mIXERCONTROL, mixerHandle, mixerFlags, nChannels));
}
if (MixerControl.IsControlSigned(mIXERCONTROL.dwControlType))
{
return(new SignedMixerControl(mIXERCONTROL, mixerHandle, mixerFlags, nChannels));
}
if (MixerControl.IsControlUnsigned(mIXERCONTROL.dwControlType))
{
return(new UnsignedMixerControl(mIXERCONTROL, mixerHandle, mixerFlags, nChannels));
}
if (MixerControl.IsControlListText(mIXERCONTROL.dwControlType))
{
return(new ListTextMixerControl(mIXERCONTROL, mixerHandle, mixerFlags, nChannels));
}
if (MixerControl.IsControlCustom(mIXERCONTROL.dwControlType))
{
return(new CustomMixerControl(mIXERCONTROL, mixerHandle, mixerFlags, nChannels));
}
throw new InvalidOperationException(string.Format("Unknown mixer control type {0}", mIXERCONTROL.dwControlType));
}
protected void GetControlDetails()
{
this.mixerControlDetails.cbStruct = Marshal.SizeOf(this.mixerControlDetails);
this.mixerControlDetails.dwControlID = this.mixerControl.dwControlID;
if (this.IsCustom)
{
this.mixerControlDetails.cChannels = 0;
}
else if ((this.mixerControl.fdwControl & 1u) != 0u)
{
this.mixerControlDetails.cChannels = 1;
}
else
{
this.mixerControlDetails.cChannels = this.nChannels;
}
if ((this.mixerControl.fdwControl & 2u) != 0u)
{
this.mixerControlDetails.hwndOwner = (IntPtr)((long)((ulong)this.mixerControl.cMultipleItems));
}
else if (this.IsCustom)
{
this.mixerControlDetails.hwndOwner = IntPtr.Zero;
}
else
{
this.mixerControlDetails.hwndOwner = IntPtr.Zero;
}
if (this.IsBoolean)
{
this.mixerControlDetails.cbDetails = Marshal.SizeOf(default(MixerInterop.MIXERCONTROLDETAILS_BOOLEAN));
}
else if (this.IsListText)
{
this.mixerControlDetails.cbDetails = Marshal.SizeOf(default(MixerInterop.MIXERCONTROLDETAILS_LISTTEXT));
}
else if (this.IsSigned)
{
this.mixerControlDetails.cbDetails = Marshal.SizeOf(default(MixerInterop.MIXERCONTROLDETAILS_SIGNED));
}
else if (this.IsUnsigned)
{
this.mixerControlDetails.cbDetails = Marshal.SizeOf(default(MixerInterop.MIXERCONTROLDETAILS_UNSIGNED));
}
else
{
this.mixerControlDetails.cbDetails = this.mixerControl.Metrics.customData;
}
int num = this.mixerControlDetails.cbDetails * this.mixerControlDetails.cChannels;
if ((this.mixerControl.fdwControl & 2u) != 0u)
{
num *= (int)this.mixerControl.cMultipleItems;
}
IntPtr intPtr = Marshal.AllocCoTaskMem(num);
this.mixerControlDetails.paDetails = intPtr;
MmResult mmResult = MixerInterop.mixerGetControlDetails(this.mixerHandle, ref this.mixerControlDetails, MixerFlags.Mixer | this.mixerHandleType);
if (mmResult == MmResult.NoError)
{
this.GetDetails(this.mixerControlDetails.paDetails);
}
Marshal.FreeCoTaskMem(intPtr);
if (mmResult != MmResult.NoError)
{
throw new MmException(mmResult, "mixerGetControlDetails");
}
}
