Re: [Vala] Manual VAPI writing
Harry Van Haaren píše v Po 19. 07. 2010 v 21:45 +0100: Hey All, I had this working before, but due to Hard disk issues I lost the .vapi. Currently I have a vapi that will create the right types, initialize the object (and destroy it), but I cant figure the read function out anymore: // sf_count_tsf_read_float(SNDFILE *sndfile, float *ptr, sf_count_t items) ; [CCode (cname=sf_read_float)] public static count_t read_float(float *array,count_t numSamples); You don't want that to be a static method. Static means it doesn't work with an actual object instance. signature.asc Description: Toto je digitálně podepsaná část zprávy ___ vala-list mailing list vala-list@gnome.org http://mail.gnome.org/mailman/listinfo/vala-list
Re: [Vala] Manual VAPI writing
// sf_count_tsf_read_float(SNDFILE *sndfile, float *ptr, sf_count_t items) ; [CCode (cname=sf_read_float)] public static count_t read_float(float *array,count_t numSamples); You don't want that to be a static method. Static means it doesn't work with an actual object instance. jeezsh.. Should have seen that! Thank you! Working now. -Harry ___ vala-list mailing list vala-list@gnome.org http://mail.gnome.org/mailman/listinfo/vala-list
Re: [Vala] Manual VAPI writing
oops, forgot to reply to all.
2010/7/1, Abderrahim Kitouni a.kito...@gmail.com:
Hi,
2010/6/30, Harry Van Haaren harryhaa...@gmail.com:
Any pointers as to how to do this? Cheers, -Harry
Use cprefix= - maybe you also need to set cname=int in order to have
Vala know what to call the type of the values.
Yes! Thanks, that worked a charm.
Next stumbling block found:
when opening a file, sf_open(...) is called. To close the file,
sf_close(file) must be called.
[CCode (cheader_filename=sndfile.h,cname =SNDFILE)]
class Sndfile
{
[CCode (cname=sf_open, free_function=sf_close)]
public Sndfile(string path, FileMode mode, out Info sf_info );
}
free_function should be set on the class, not the constructor. Valac
should probably warn on unreconized annotations.
btw, your class should be compact.
HTH,
Abderrahim
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Re: [Vala] Manual VAPI writing
On Di, 2010-06-29 at 22:15 +0100, Harry Van Haaren wrote:
Andrea wrote:
if your intent is to bind ad use the add function your binding it's
quite right, but can be simpler:
[CCode (cheader_filename=bindMe.h)]
namespace Math
{
[CCode (cname=add)]
public static int add (int a, int b);
}
Thanks, that's what I needed to hear ;-)
I'm working on a LibSndFile wrapper, that's the reason for learning
wrapping.
I've got the a small part working, but not much (yet). I'm compiling with
valac --save-temps,
and analysing the output to work out where my errors are.
I'm getting stuck on enum types, that are *NOT* in a namespace.
Eg: the name of the enum IS what to call that in the output C file.
enum
{/* True and false */
SF_FALSE= 0,
SF_TRUE= 1,
/* Modes for opening files. */
SFM_READ= 0x10,
SFM_WRITE= 0x20,
SFM_RDWR= 0x30,
SF_AMBISONIC_NONE= 0x40,
SF_AMBISONIC_B_FORMAT= 0x41
} ;
Is the one I'm stuck on now. I tried this in the .vapi:
class Sndfile
{ // all other functions ommitted for brevity
[CCode (cname=)]
public enum FileMode
{/* True and false */
SF_FALSE= 0,
SF_TRUE= 1,
/* Modes for opening files. */
SFM_READ= 0x10,
SFM_WRITE= 0x20,
SFM_RDWR= 0x30,
SF_AMBISONIC_NONE= 0x40,
SF_AMBISONIC_B_FORMAT= 0x41
}
}
but the C output goes like so SNDFILE_FILE_MODE_SFM_READ while I want
SFM_READ.
I hoped that the cname= would clear the SNDFILE_FILE_MODE_ from the
start but it didnt..
Any pointers as to how to do this? Cheers, -Harry
Use cprefix= - maybe you also need to set cname=int in order to have
Vala know what to call the type of the values.
--
Julian Andres Klode - Debian Developer, Ubuntu Member
See http://wiki.debian.org/JulianAndresKlode and http://jak-linux.org/.
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Re: [Vala] Manual VAPI writing
Andrea wrote:
if your intent is to bind ad use the add function your binding it's
quite right, but can be simpler:
[CCode (cheader_filename=bindMe.h)]
namespace Math
{
[CCode (cname=add)]
public static int add (int a, int b);
}
Thanks, that's what I needed to hear ;-)
I'm working on a LibSndFile wrapper, that's the reason for learning
wrapping.
I've got the a small part working, but not much (yet). I'm compiling with
valac --save-temps,
and analysing the output to work out where my errors are.
I'm getting stuck on enum types, that are *NOT* in a namespace.
Eg: the name of the enum IS what to call that in the output C file.
enum
{/* True and false */
SF_FALSE= 0,
SF_TRUE= 1,
/* Modes for opening files. */
SFM_READ= 0x10,
SFM_WRITE= 0x20,
SFM_RDWR= 0x30,
SF_AMBISONIC_NONE= 0x40,
SF_AMBISONIC_B_FORMAT= 0x41
} ;
Is the one I'm stuck on now. I tried this in the .vapi:
class Sndfile
{ // all other functions ommitted for brevity
[CCode (cname=)]
public enum FileMode
{/* True and false */
SF_FALSE= 0,
SF_TRUE= 1,
/* Modes for opening files. */
SFM_READ= 0x10,
SFM_WRITE= 0x20,
SFM_RDWR= 0x30,
SF_AMBISONIC_NONE= 0x40,
SF_AMBISONIC_B_FORMAT= 0x41
}
}
but the C output goes like so SNDFILE_FILE_MODE_SFM_READ while I want
SFM_READ.
I hoped that the cname= would clear the SNDFILE_FILE_MODE_ from the
start but it didnt..
Any pointers as to how to do this? Cheers, -Harry
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Re: [Vala] Manual VAPI writing
Any pointers as to how to do this? Cheers, -Harry
Use cprefix= - maybe you also need to set cname=int in order to have
Vala know what to call the type of the values.
Yes! Thanks, that worked a charm.
Next stumbling block found:
when opening a file, sf_open(...) is called. To close the file,
sf_close(file) must be called.
[CCode (cheader_filename=sndfile.h,cname =SNDFILE)]
class Sndfile
{
[CCode (cname=sf_open, free_function=sf_close)]
public Sndfile(string path, FileMode mode, out Info sf_info );
}
Doesnt seem to work...? The C output is totally off, ie:
// at top of file:
#define _sndfile_unref0(var) ((var == NULL) ? NULL : (var = (sndfile_unref
(var), NULL)))
// where file.close() is called:
_sndfile_unref0 (file);
I think it must be something in the .vapi, because that C looks totally
unrelated to:
sf_close(file);
;-) Getting steadily closer... I can print values of the sample loaded from
HD already... sound will be coming soon!
-Harry
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