/*
* @}
*/
/// <summary>
/// Constructs the appropriate channel subclass based on the properties of the provided ChannelInfo object.
/// Used primarily by AddChannel as called from Refresh().
/// </summary>
/// <param name="info">the ChannelInfo object from which to construct a channel object</param>
/// <returns></returns>
private Csound6Channel CreateChannelFromInfo(ChannelInfo info)
{
Csound6Channel channel = null;
switch (info.Type)
{
case ChannelType.Control:
channel = new Csound6ControlChannel(info.Name, info.Direction, m_csound);
// info.Hints;
break;
case ChannelType.String:
channel = new Csound6StringChannel(info.Name, info.Direction, m_csound);
break;
case ChannelType.Audio:
channel = new Csound6AudioChannel(info.Name, info.Direction, m_csound);
break;
case ChannelType.Pvs:
// channel = new Csound6PvsChannel(info.Name, info.Direction, m_csound);//not supported yet
break;
case ChannelType.Var:
default:
break;
}
return(channel);
}
/// <summary>
/// Supports responding to an InputChannelCallback event by providing a method to
/// communicate a value back to csound appropriate to the channel.
/// The "invalue" opcode, which is the only opcode to trigger this event,
/// only supports receiving strings and MYFLT (double) control values.
/// </summary>
/// <param name="value"></param>
public void SetCsoundValue(Csound6NetRealtime csound, object value)
{
if (m_pObject != IntPtr.Zero)
{
switch (Type)
{
case ChannelType.Control:
Marshal.StructureToPtr((double)value, m_pObject, false);
break;
case ChannelType.String:
byte[] buf = new byte[Csound6Channel.GetChannelDataSize(csound, Name)];
string s = value.ToString();
if (s.Length + 1 > buf.Length)
{
s = s.Substring(0, buf.Length - 1);
}
ASCIIEncoding.ASCII.GetBytes(s, 0, s.Length, buf, 0);
buf[s.Length + 1] = 0;
Marshal.Copy(buf, 0, m_pObject, buf.Length);
break;
default: //other types not supported in csound: pvs, audio, var
break;
}
}
}
/// <summary>
/// Removes from the software bus the channel object with the provided name.
/// It is not deleted from csound, however.
/// </summary>
/// <param name="name">name of the channel to remove from the bus's collection</param>
/// <returns>the removed channel or null when there is no channel with the provided name</returns>
public Csound6Channel RemoveChannel(string name)
{
Csound6Channel channel = null;
if (HasChannel(name))
{
channel = m_channels[name];
m_channels.Remove(name);
}
return(channel);
}
