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/******************************************************
*
* dmxout - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 0603:forum::für::umläute:2008
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
#include "dmx4pd.h"
#include <unistd.h>
#include <string.h>
static t_class *dmxout_class;
static t_class *dmxout_class2;
typedef struct _dmxout
{
t_object x_obj;
t_inlet *x_portinlet;
int x_device;
t_float x_port;
int x_portrange;
} t_dmxout;
static void dmxout_close(t_dmxout*x)
{
if(x->x_device>=0) {
close(x->x_device);
}
x->x_device=-1;
}
static void dmxout_open(t_dmxout*x, t_symbol*s_devname)
{
int argc=2;
const char *args[2] = {"--dmx", s_devname->s_name};
const char**argv=args;
char*devname="";
int fd;
if(s_devname && s_devname->s_name)
devname=s_devname->s_name;
// strncpy(args[0], "--dmx", MAXPDSTRING);
// strncpy(args[1], devname, MAXPDSTRING);
fd = open (DMXdev(&argc, argv), O_WRONLY);
if(fd!=-1) {
dmxout_close(x);
x->x_device=fd;
}
}
static void dmxout_doout(t_dmxout*x, short baseport, short portrange, dmx_t*values)
{
if(x->x_device<=0) {
pd_error(x, "no DMX universe found");
return;
}
lseek (x->x_device, sizeof(dmx_t)*baseport, SEEK_SET); /* set to the current channel */
write (x->x_device, values, portrange*sizeof(dmx_t)); /* write the channel */
}
static void dmxout_doout1(t_dmxout*x, short port, unsigned char value)
{
dmx_t buffer[1] = {value};
dmxout_doout(x, port, 1, buffer);
}
static void dmxout_float(t_dmxout*x, t_float f)
{
unsigned char val=(unsigned char)f;
short port = (short)x->x_port;
if(f<0. || f>255.) {
pd_error(x, "value %f out of bounds [0..255]", f);
return;
}
if(x->x_port<0. || x->x_port>512.) {
pd_error(x, "port %f out of bounds [0..512]", x->x_port);
return;
}
dmxout_doout1(x, port, val);
}
static void dmxout_list(t_dmxout*x, t_symbol*s, int argc, t_atom*argv)
{
int count=(argc<x->x_portrange)?argc:x->x_portrange;
dmx_t*buffer=(dmx_t*)getbytes(count*sizeof(dmx_t));
int i=0;
int errors=0;
for(i=0; i<count; i++) {
t_float f=atom_getfloat(argv+i);
if(f<0. || f>255.) {
errors++;
if(f<0.)f=0.;
if(f>255)f=255;
}
buffer[i]=(unsigned char)f;
}
if(errors) {
pd_error(x, "%d valu%s out of bound [0..255]", errors, (1==errors)?"e":"es");
}
dmxout_doout(x, x->x_port, count, buffer);
}
static void dmxout_port(t_dmxout*x, t_float f_baseport, t_floatarg f_portrange)
{
short baseport =(short)f_baseport;
short portrange=(short)f_portrange;
if(baseport<0 || baseport>=512) {
pd_error(x, "port %f out of bounds [0..512]", f_baseport);
baseport =0;
}
x->x_port = baseport;
if(portrange<0) {
pd_error(x, "portrange %f<0! setting to 1", portrange);
portrange=1;
} else if (portrange==0) {
portrange=x->x_portrange;
}
if (baseport+portrange>512) {
pd_error(x, "upper port exceeds 512! clamping");
portrange=512-baseport;
}
x->x_portrange=portrange;
}
static void *dmxout_new(t_symbol*s, int argc, t_atom*argv)
{
t_floatarg baseport=0.f, portrange=0.f;
t_dmxout *x = 0;
switch(argc) {
case 2:
x=(t_dmxout *)pd_new(dmxout_class2);
x->x_portinlet=inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("port"));
baseport=atom_getfloat(argv);
portrange=atom_getfloat(argv+1);
dmxout_port(x, baseport, portrange);
break;
case 1:
baseport=atom_getfloat(argv);
case 0:
x=(t_dmxout *)pd_new(dmxout_class);
x->x_portinlet=floatinlet_new(&x->x_obj, &x->x_port);
x->x_port = baseport;
x->x_portrange = -1;
break;
default:
return 0;
}
x->x_device=-1;
dmxout_open(x, gensym(""));
return (x);
}
static void *dmxout_free(t_dmxout*x)
{
dmxout_close(x);
}
void dmxout_setup(void)
{
dmxout_class = class_new(gensym("dmxout"), (t_newmethod)dmxout_new, (t_method)dmxout_free,
sizeof(t_dmxout),
0,
A_GIMME, A_NULL);
class_addfloat(dmxout_class, dmxout_float);
dmxout_class2 = class_new(gensym("dmxout"), (t_newmethod)dmxout_new, (t_method)dmxout_free,
sizeof(t_dmxout),
0,
A_GIMME, A_NULL);
class_addlist(dmxout_class2, dmxout_list);
class_addmethod(dmxout_class2, (t_method)dmxout_port, gensym("port"),
A_FLOAT, A_DEFFLOAT, A_NULL);
#ifdef DMX4PD_POSTBANNER
DMX4PD_POSTBANNER
#endif
}
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