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/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2005 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
/*! \file fldsp.cpp
\brief Implementation of the flext dsp base class.
*/
#include "flext.h"
#include "flinternal.h"
#include <string.h>
// === flext_dsp ==============================================
#if FLEXT_SYS == FLEXT_SYS_JMAX
const t_symbol *flext_dsp::dspsym = MakeSymbol("__flext_dspfun__");
#endif
void flext_dsp::Setup(t_classid id)
{
t_class *c = getClass(id);
#if FLEXT_SYS == FLEXT_SYS_MAX
dsp_initclass();
add_dsp(c,cb_dsp);
#elif FLEXT_SYS == FLEXT_SYS_PD
CLASS_MAINSIGNALIN(c,flext_hdr,defsig); // float messages going into the left inlet are converted to signal
add_dsp(c,cb_dsp);
add_method1(c,cb_enable,"enable",A_FLOAT);
#elif FLEXT_SYS == FLEXT_SYS_JMAX
fts_dsp_declare_function(dspsym,dspmeth);
fts_class_message_varargs(c, fts_s_put, cb_dsp);
fts_class_message_varargs(c, MakeSymbol("enable"), cb_enable);
#endif
}
flext_dsp::FLEXT_CLASSDEF(flext_dsp)():
#if FLEXT_SYS == FLEXT_SYS_JMAX
srate(fts_dsp_get_sample_rate()), // should we set it?
blksz(fts_dsp_get_tick_size()),
#else
srate(sys_getsr()),blksz(sys_getblksize()),
#endif
chnsin(0),chnsout(0),
#if FLEXT_SYS != FLEXT_SYS_MAX
dspon(true),
#endif
invecs(NULL),outvecs(NULL)
{
#if FLEXT_SYS == FLEXT_SYS_JMAX
fts_dsp_object_init(thisHdr());
#endif
}
flext_dsp::~FLEXT_CLASSDEF(flext_dsp)()
{
#if FLEXT_SYS == FLEXT_SYS_JMAX
fts_dsp_object_delete(thisHdr());
#endif
#if FLEXT_SYS == FLEXT_SYS_MAX
// switch off dsp as the dsp function might get called afterwards (different thread)
thisHdr()->z_disabled = true;
#endif
if(invecs) delete[] invecs;
if(outvecs) delete[] outvecs;
}
#if FLEXT_SYS == FLEXT_SYS_JMAX
void flext_dsp::dspmeth(fts_word_t *w)
{
}
#else
t_int *flext_dsp::dspmeth(t_int *w)
{
flext_dsp *obj = (flext_dsp *)(size_t)w[1];
#if FLEXT_SYS == FLEXT_SYS_MAX
if(!obj->thisHdr()->z_disabled)
#else
if(obj->dspon)
#endif
{
obj->indsp = true;
obj->m_signal(obj->blksz,obj->invecs,obj->outvecs);
obj->indsp = false;
}
return w+2;
}
#endif
#if FLEXT_SYS == FLEXT_SYS_JMAX
void flext_dsp::cb_dsp(fts_object_t *c, int winlet, fts_symbol_t s, int ac, const fts_atom_t *at)
#elif FLEXT_SYS == FLEXT_SYS_MAX
void flext_dsp::cb_dsp(t_class *c,t_signal **sp,short *count)
#else
void flext_dsp::cb_dsp(t_class *c,t_signal **sp)
#endif
{
flext_dsp *obj = thisObject(c);
int i;
int in = obj->CntInSig();
int out = obj->CntOutSig();
#if FLEXT_SYS == FLEXT_SYS_PD
// min. 1 input channel! (CLASS_MAININLET in pd...)
if(!in) in = 1;
#else
if(in+out == 0) return;
#endif
// store current dsp parameters
#if FLEXT_SYS == FLEXT_SYS_JMAX
fts_dsp_descr_t *dsp = (fts_dsp_descr_t *)fts_get_pointer(at+0);
obj->srate = fts_dsp_get_input_srate(dsp,0);
obj->blksz = fts_dsp_get_input_size(dsp,0); // is this guaranteed to be the same as sys_getblksize() ?
#else
obj->srate = sp[0]->s_sr;
obj->blksz = sp[0]->s_n; // is this guaranteed to be the same as sys_getblksize() ?
#endif
// store in and out signal vectors
if(in != obj->chnsin) {
if(obj->invecs) delete[] obj->invecs;
obj->invecs = in?new t_signalvec[in]:NULL;
obj->chnsin = in;
}
for(i = 0; i < in; ++i)
obj->invecs[i] =
#if FLEXT_SYS == FLEXT_SYS_JMAX
fts_dsp_get_input_name(dsp,i);
#else
sp[i]->s_vec;
#endif
if(out != obj->chnsout) {
if(obj->outvecs) delete[] obj->outvecs;
obj->outvecs = out?new t_signalvec[out]:NULL;
obj->chnsout = out;
}
for(i = 0; i < out; ++i)
obj->outvecs[i] =
#if FLEXT_SYS == FLEXT_SYS_JMAX
fts_dsp_get_output_name(dsp,i);
#else
sp[in+i]->s_vec;
#endif
// with the following call derived classes can do their eventual DSP setup
obj->m_dsp(obj->blksz,obj->invecs,obj->outvecs);
// set the DSP function
#if FLEXT_SYS == FLEXT_SYS_JMAX
fts_atom_t args;
fts_set_pointer(args,obj);
fts_dsp_add_function(dspsym,1,args);
#else
dsp_add((t_dspmethod)dspmeth,1,obj);
#endif
}
/*
#if FLEXT_SYS == FLEXT_SYS_JMAX
void flext_dsp::cb_dsp_init(fts_object_t *c, int winlet, fts_symbol_t *s, int ac, const fts_atom_t *at)
{
fts_dsp_add_object(c);
}
void flext_dsp::cb_dsp_delete(fts_object_t *c, int winlet, fts_symbol_t *s, int ac, const fts_atom_t *at)
{
fts_dsp_remove_object(c);
}
#endif
*/
void flext_dsp::m_dsp(int /*n*/,t_signalvec const * /*insigs*/,t_signalvec const * /*outsigs*/) {}
void flext_dsp::m_signal(int n,t_sample *const * /*insigs*/,t_sample *const *outs)
{
for(int i = 0; i < CntOutSig(); ++i) ZeroSamples(outs[i],n);
}
#if FLEXT_SYS == FLEXT_SYS_PD
void flext_dsp::cb_enable(t_class *c,t_float on) { thisObject(c)->dspon = on != 0; }
#elif FLEXT_SYS == FLEXT_SYS_JMAX
void flext_dsp::cb_enable(fts_object_t *c, int winlet, fts_symbol_t s, int ac, const fts_atom_t *at)
{ thisObject(c)->dspon = fts_get_int(at+0) != 0; }
#endif
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