/// <summary>
/// Provides a dictionary of all currently defined channels resulting from compilation of an orchestra
/// containing channel definitions.
/// Entries, keyed by name, are polymorphically assigned to their correct data type: control, audio, string, pvc.
/// Used by the Csound6SoftwareBus class to initialize its contents.
/// </summary>
/// <returns>a dictionary of all currently defined channels keyed by their name to its ChannelInfo</returns>
public IDictionary <string, ChannelInfo> GetChannelList()
{
IDictionary <string, ChannelInfo> channels = new SortedDictionary <string, ChannelInfo>();
IntPtr ppChannels = IntPtr.Zero;
int size = NativeMethods.csoundListChannels(Engine, out ppChannels);
if ((ppChannels != IntPtr.Zero) && (size >= 0))
{
int proxySize = Marshal.SizeOf(typeof(ChannelInfoProxy));
for (int i = 0; i < size; i++)
{
var proxy = Marshal.PtrToStructure(ppChannels + (i * proxySize), typeof(ChannelInfoProxy)) as ChannelInfoProxy;
string chanName = Marshal.PtrToStringAnsi(proxy.name);
ChannelInfo info = new ChannelInfo(chanName, (ChannelType)(proxy.type & 15), (ChannelDirection)(proxy.type >> 4));
var hintProxy = proxy.hints;
var hints = new ChannelHints((ChannelBehavior)hintProxy.behav, hintProxy.dflt, hintProxy.min, hintProxy.max);
hints.x = hintProxy.x; hints.y = hintProxy.y; hints.height = hintProxy.height; hints.width = hintProxy.width;
hints.attributes = (hintProxy.attributes != IntPtr.Zero) ? Marshal.PtrToStringAnsi(hintProxy.attributes) : null;
info.Hints = hints;
channels.Add(chanName, info);
}
NativeMethods.csoundDeleteChannelList(Engine, ppChannels);
}
return(channels);
}
public ChannelHintsProxy(ChannelHints hints)
{
behav = (int)hints.behav;
dflt = hints.dflt; min = hints.min; max = hints.max;
x = hints.x; y = hints.y; height = hints.height; width = hints.width;
attributes = IntPtr.Zero;
}
//~Csound6ControlChannel() //not needed since nothing to do calling Dispose(false)
//{
// Dispose(false);
//}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (disposing)
{
m_hint = null;
}//no managed resources
}
/// <summary>
/// Returns the current content of this channel's controlChannelHints_t structure.
/// Most of these values are available as properties of this control channel's object.
/// </summary>
/// <returns>A managed version of the unmanaged controlChannelHints_t structure for this channel</returns>
public ChannelHints GetControlChannelHints()
{
if (m_hint == null)
{
IntPtr pHints = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.ChannelHintsProxy)));
NativeMethods.csoundGetControlChannelHints(m_csound.Engine, Name, pHints);
var proxy = (NativeMethods.ChannelHintsProxy)Marshal.PtrToStructure(pHints, typeof(NativeMethods.ChannelHintsProxy));
m_hint = new ChannelHints((ChannelBehavior)proxy.behav, proxy.dflt, proxy.min, proxy.max);
m_hint.x = proxy.x; m_hint.y = proxy.y; m_hint.height = proxy.height; m_hint.width = proxy.width;
m_hint.attributes = (proxy.attributes != IntPtr.Zero) ? Marshal.PtrToStringAnsi(proxy.attributes) : null;
Marshal.FreeHGlobal(pHints);
}
return(m_hint);
}
/// <summary>
/// Updates this channel's controlChannelHints_t structure with the provided ChannelHints
/// contents. Use to revise any or all of the values of a control channels hints properties.
/// Used internally to update individual properties.
/// </summary>
/// <param name="hints">A ChannelHints object with the desired current values</param>
public void SetControlChannelHints(ChannelHints hints)
{
m_hint = hints;
var xprox = new NativeMethods.ChannelHintsProxy(hints);
int result = NativeMethods.csoundSetControlChannelHints(m_csound.Engine, Name, xprox);
}
/// <summary>
/// Creates a control channel object using the provided name, direction, channel hints and csound instance
/// </summary>
/// <param name="name"></param>
/// <param name="direction"></param>
/// <param name="hints"></param>
/// <param name="csound"></param>
public Csound6ControlChannel(string name, ChannelDirection direction, ChannelHints hints, Csound6Net csound)
: base(name, direction, csound)
{
m_hint = hints;
SetControlChannelHints(hints);
}
