Hi All,

I'm in the process of moving ftgen, ftload, ftload_k, ftsave, and
ftsave_k into an opcode plugin, but there is no mcalloc in ENVIRON. 
What is the process of adding this in?

Thanks,
steven



On 8/3/05, Steven Yi <stevenyi@gmail.com> wrote:
> Hi Istvan,
> 
> Thanks for the information.  I didn't see that hfgens was already in
> the ENVIRON struct.  I committed a version of the ftfree opcode an
> hour or so ago that was in fgens.c and entry1.c.  I'll work on pushing
> it and ftgens and whatever opcodes that use structs in ftgen.h out to
> an opcode plugin.
> 
> I ended up making ftfree take both the number of the table to free as
> well as freeTime parameter that if equal to 0 to free at opcode init,
> and if not zero to free at deinit time.  Originally, I thought the
> instrument I am translating had a temp array that was being generated
> and free()'d in the code and then later realized it wasn't being used.
>  Maybe it's better to simplify and just delete at deinit anyways?
> (Maybe I'll take that option out then.)
> 
> Do you think it's better to have an ftgentemp opcode where the table
> is always deleted at deinit, or better to explicitly call ftfree?  Is
> there a use case where say, one instrument will generate a wavetable
> and other instruments will use it for a while, then that instrument is
> called again to generate a new ftable and free the old one?  Hmm...
> maybe not, as you could always just overwrite a table assigned to a
> global var.
> 
> Okay, sounds like an ftgentemp would be a good solution to all of
> this.  I'll remove the ftfree opcode I put in and redo it all as an
> opcode plugin.
> 
> Thanks!
> steven
> 
> 
> On 8/3/05, Istvan Varga <istvan_v@fibermail.hu> wrote:
> > For freeing a table with a known number, you can just use csound->hfgens()
> > with a negative table number which will request deleting the table, and
> > this should work from plugins. Alternatively, it may make sense to write
> > a version of the ftgen opcode that automatically deletes the table at
> > note deinit. It should be possible to implement that opcode as a plugin
> > (actually, ftgen may be moved out of fgens.c as well).
> >
> > Steven Yi wrote:
> >
> > > I'm working on ftree now and am putting it in fgens.c and adding a
> > > struct to ftgen.h, and plan to add it to entry1.c.  or entry2.c,
> > > wherever ftgen is at. The reason I'm doing this within csound and not
> > > as a plugin is that I haven't found any API functions which can do
> > > this.  I'm using the code from hfgens:
> > >
> > > if (ff->fno > csound->maxfnum ||
> > >           (ftp = csound->flist[ff->fno]) == NULL) {
> > >         fterror(csound, ff, Str("ftable does not exist"));
> > >         return -1;
> > >       }
> > >       csound->flist[ff->fno] = NULL;
> > >       mfree(csound, (void*) ftp);
> > >
> > > (with the ff->fno coming from *p instead) to free the table.  Does
> > > this all sound alright or is there an API way to do this? (And if not,
> > > should there be?)
> >
> >
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