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/*
midiinterop.c:
Copyright (C) 2002 Michael Gogins
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "csoundCore.h"
#include "midiinterop.h"
#include "math.h"
#define dv127 (FL(1.0)/FL(127.0))
/* aops.c, table for CPSOCTL */
/* extern MYFLT cpsocfrc[]; */
int32_t midinoteoff(CSOUND *csound, MIDINOTEON *p)
{
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
*p->xkey = p->h.insdshead->m_pitch;
*p->xvelocity = p->h.insdshead->m_veloc;
return OK;
}
int32_t midinoteonkey(CSOUND *csound, MIDINOTEON *p)
{
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
*p->xkey = p->h.insdshead->m_pitch;
*p->xvelocity = p->h.insdshead->m_veloc;
return OK;
}
int32_t midinoteoncps(CSOUND *csound, MIDINOTEON *p)
{
MYFLT octave;
int32_t longOctave;
if (!p->h.insdshead->m_chnbp) {
return OK;
}
octave = (MYFLT)(p->h.insdshead->m_pitch / FL(12.0) + FL(3.0));
longOctave = (int32_t)(octave * OCTRES);
*p->xkey = (MYFLT)CPSOCTL(longOctave);
*p->xvelocity = p->h.insdshead->m_veloc;
return OK;
}
int32_t midinoteonoct(CSOUND *csound, MIDINOTEON *p)
{
MYFLT octave;
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
octave = (MYFLT)(p->h.insdshead->m_pitch / FL(12.0) + FL(3.0));
*p->xkey = octave;
*p->xvelocity = p->h.insdshead->m_veloc;
return OK;
}
int32_t midinoteonpch(CSOUND *csound, MIDINOTEON *p)
{
double pitch;
double octave;
double integer;
double fraction;
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
pitch = (double)p->h.insdshead->m_pitch;
octave = pitch / 12.0 + 3.0;
fraction = modf(octave, &integer);
fraction *= 0.12;
*p->xkey = (MYFLT)(integer + fraction);
*p->xvelocity = p->h.insdshead->m_veloc;
return OK;
}
int32_t midipolyaftertouch(CSOUND *csound, MIDIPOLYAFTERTOUCH *p)
{
MYFLT scale;
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
scale = (*p->hhigh - *p->olow) * dv127;
*p->xpolyaftertouch = *p->olow +
p->h.insdshead->m_chnbp->polyaft[(int32_t)*p->xcontroller] * scale;
return OK;
}
int32_t midicontrolchange(CSOUND *csound, MIDICONTROLCHANGE *p)
{
MYFLT scale;
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
scale = (*p->hhigh - *p->olow) * dv127;
*p->xcontrollervalue =
*p->olow + p->h.insdshead->m_chnbp->ctl_val[(int32_t)*p->xcontroller] * scale;
return OK;
}
int32_t midiprogramchange(CSOUND *csound, MIDIPROGRAMCHANGE *p)
{
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
*p->xprogram = p->h.insdshead->m_chnbp->pgmno;
return OK;
}
int32_t midichannelaftertouch(CSOUND *csound, MIDICHANNELAFTERTOUCH *p)
{
MYFLT scale;
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
scale = (*p->hhigh - *p->olow) * dv127;
*p->xchannelaftertouch = *p->olow + p->h.insdshead->m_chnbp->aftouch * scale;
return OK;
}
int32_t midipitchbend(CSOUND *csound, MIDIPITCHBEND *p)
{
MYFLT scale;
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
scale = (*p->hhigh - *p->olow) * dv127;
*p->xpitchbend = *p->olow + p->h.insdshead->m_chnbp->pchbend * scale;
return OK;
}
int32_t mididefault(CSOUND *csound, MIDIDEFAULT *p)
{
IGN(csound);
if (!p->h.insdshead->m_chnbp) {
return OK;
}
*p->xvalue = *p->xdefault;
return OK;
}
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