Re: [Vala] LADSPA bindings

[Gergely Polonkai <gergely polonkai eu>]

Try removing it everywhere. Structs are always translated into pointers, so
every Descriptor * should be plain Descriptor instead. Where you need to
pass pointers to simple types (e.g. double *), use “typename?” instead,
like double? double_pointer_param.

Another thing that is suspicious to me is char[,] PortNames, but it may be
I just haven’t seen such Vala construct before.

On Sun, Sep 11, 2016, 18:37 Victor Aurélio Santos <
victoraur santos gmail com> wrote:

> Don't know.. but the error stays even changing
>
> Em 11 de set de 2016 13:30, "Gergely Polonkai" <gergely polonkai eu>
> escreveu:
>
> > Should not that be (Descriptor instance, ulong port, double?
> > dataLocation) instead? Using asterisk in Vala seems unnatural to me…
> >
> > On Sun, Sep 11, 2016, 18:09 Victor Aurélio Santos <
> > victoraur santos gmail com> wrote:
> >
> > > What I've tried:
> > >
> > >     [CCode (copy_function="", destroy_function="")]
> > >     public struct Descriptor
> > >     {
> > >         public ulong UniqueID;
> > >         public const char[] Label;
> > >         public Properties Properties;
> > >         public const char[] Name;
> > >         public const char[] Maker;
> > >         public const char[] Copyright;
> > >         public ulong PortCount;
> > >         public const PortDescriptor[] PortDescriptors;
> > >         public const char[,] PortNames;
> > >         public const PortRangeHint[] PortRangeHints;
> > >         public void[] ImplementationData;
> > >
> > >         public Descriptor instantiate(Descriptor* descriptor, ulong
> > > sampleRate);
> > >
> > >         [CCode (has_target = false)]
> > >         public delegate void connect_port(Descriptor* instance, ulong
> > > port, double* dataLocation);
> > >
> > >         public void activate(Descriptor* instance);
> > >
> > >         public void run(Descriptor* instance, ulong sampleCount);
> > >
> > >         public void run_adding(Descriptor* instance, ulong sampleCount);
> > >
> > >         public void set_run_adding_gain(Descriptor* instance, Data gain);
> > >
> > >         public void deactivate(Descriptor* instance);
> > >
> > >         public void cleanup(Descriptor* instance);
> > >     }
> > >
> > > The valac complaints:
> > >
> > > LADSPA.vapi:52.9-52.41: error: unexpected declaration
> > >         public delegate void connect_port(Descriptor* instance, ulong
> > > port, double* dataLocation);
> > >
> > > 2016-09-10 20:18 GMT-03:00 Al Thomas <astavale yahoo co uk>:
> > > > > From: Victor Aurélio Santos <victoraur santos gmail com>
> > > > > Sent: Saturday, 10 September 2016, 23:57
> > > > > Subject: Re: [Vala] LADSPA bindings
> > > >
> > > > > I'm trying to use plugins from vala, not to write!
> > > > > I'm stuck at writing the vapi file, most specifically at the
> > > Descriptor struct.
> > > > Take a look at
> > > https://wiki.gnome.org/Projects/Vala/LegacyBindings#Binding_a_C_Struct.27s_Fields
> > > > The function pointers are targetless delegates. There is no
> > > >
> > > > memory handling for the struct so I don't think it should be
> > > >
> > > > bound as a compact class.
> > >
> > >
> > >
> > > --
> > > Victor Aurélio Santos
> > > _______________________________________________
> > > vala-list mailing list
> > > vala-list gnome org
> > > https://mail.gnome.org/mailman/listinfo/vala-list