public void AdjustVolume(MixerInfo mi, int delta) { VOLUME volume = GetVolume(mi); if (delta > 0) { volume.left = Math.Min(mi.maxVolume, volume.left + delta); volume.right = Math.Min(mi.maxVolume, volume.right + delta); } else { volume.left = Math.Max(mi.minVolume, volume.left + delta); volume.right = Math.Max(mi.minVolume, volume.right + delta); } SetVolume(mi, volume); }
public void SetVolume(MixerInfo mi, VOLUME volume) { MIXERCONTROLDETAILS mcd = new MIXERCONTROLDETAILS(); mcd.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERCONTROLDETAILS)); mcd.dwControlID = mi.volumeCtl; mcd.cMultipleItems = 0; mcd.cChannels = 2; mcd.cbDetails = (uint)Marshal.SizeOf(typeof(int)); mcd.paDetails = Marshal.AllocHGlobal((int)mcd.cbDetails); Marshal.StructureToPtr(volume, mcd.paDetails, false); WinMNWarpConstants.mixerSetControlDetails(IntPtr.Zero, ref mcd, MIXER.GETCONTROLDETAILSF_VALUE | MIXER.OBJECTF_MIXER); Marshal.FreeHGlobal(mcd.paDetails); }
public VOLUME GetVolume(MixerInfo mi) { MIXERCONTROLDETAILS mcd = new MIXERCONTROLDETAILS(); mcd.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERCONTROLDETAILS)); mcd.dwControlID = mi.volumeCtl; mcd.cMultipleItems = 0; mcd.cChannels = 2; mcd.cbDetails = (uint)Marshal.SizeOf(typeof(int)); mcd.paDetails = Marshal.AllocHGlobal((int)mcd.cbDetails); WinMNWarpConstants.mixerGetControlDetails(IntPtr.Zero, ref mcd, MIXER.GETCONTROLDETAILSF_VALUE | MIXER.OBJECTF_MIXER); VOLUME rtn = (VOLUME)Marshal.PtrToStructure(mcd.paDetails, typeof(VOLUME)); Marshal.FreeHGlobal(mcd.paDetails); return(rtn); }