Thanks that explains it very well.  Also makes the code a little more
verbose but gains a bit clarity in intent too I think.


On 7/20/05, Istvan Varga <istvan_v@fibermail.hu> wrote:
> Steven Yi wrote:
> 
> > Could you explain a little bit about the latest API Additions?
> > Particularly all of those that involve getting opcode information
> > (name, args, argTypes, arg name, etc.), and what a use-case might be?
> 
> These functions generally allow opcodes to get information about
> the number, type, and name of arguments, note parameters, etc.
> without depending on the use of internal structures which may possibly
> change between releases of Csound.
> Here are some common examples (the list is not complete, there are
> more functions):
> 
> p->INOCOUNT                    csound->GetInputArgCnt(p)
> p->OUTOCOUNT                   csound->GetOutputArgCnt(p)
> p->XINCODE                     csound->GetInputArgAMask(p)
> p->XOUTCODE                    csound->GetOutputArgAMask(p)
> p->XSTRCODE                    csound->GetInputArgSMask(p)
> p->XOUTSTRCODE                 csound->GetOutputArgSMask(p)
> p->h.optext->t.inlist->arg[n]  csound->GetInputArgName(p, n)
> p->h.optext->t.outlist->arg[n] csound->GetOutputArgName(p, n)
> p->h.insdshead->m_pitch        csound->GetMidiNoteNumber(p)
> p->h.insdshead->m_veloc        csound->GetMidiVelocity(p)
> p->h.insdshead->relesing       csound->GetReleaseFlag(p)
> p->h.insdshead->offtim         csound->GetOffTime(p)
> p->h.insdshead->m_chnbp        csound->GetMidiChannel(p)
> 
> Of course, it may turn out that using the macros and structures is safe
> (and is definitely much faster) even when mixing binaries from different
> versions of Csound 5, so the functions may very well be removed if they
> are not useful in practice.
> 
> 
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