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Diffstat (limited to 'dmx512/src/dmxout_b.c')
| -rw-r--r-- | dmx512/src/dmxout_b.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/dmx512/src/dmxout_b.c b/dmx512/src/dmxout_b.c new file mode 100644 index 0000000..968110d --- /dev/null +++ b/dmx512/src/dmxout_b.c @@ -0,0 +1,240 @@ +/****************************************************** + * + * 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> +#include <stdio.h> + +static t_class *dmxout_class; +static t_class *dmxout_class2; + +#define NUM_DMXVALUES 512 + +typedef struct _dmxout +{ + t_object x_obj; + + t_inlet *x_portinlet; + + int x_device; + t_float x_port; + int x_portrange; + + dmx_t x_values[NUM_DMXVALUES]; +} t_dmxout; + +static void dmxout_clearbuf(t_dmxout*x) +{ + int i=0; + for(i=0; i<NUM_DMXVALUES; i++) x->x_values[i]=0; +} + +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; + const char*devname=""; + int fd; + + dmxout_close(x); + + if(s_devname && s_devname->s_name) + devname=s_devname->s_name; + + // strncpy(args[0], "--dmx", MAXPDSTRING); + // strncpy(args[1], devname, MAXPDSTRING); + verbose(2, "[dmxout]: trying to open '%s'", args[1]); + devname=DMXdev(&argc, argv); + if(!devname){ + pd_error(x, "couldn't find DMX device"); + return; + } + verbose(1, "[dmxout] opening %s", devname); + + fd = open (devname, O_WRONLY | O_NONBLOCK); + + if(fd!=-1) { + x->x_device=fd; + dmxout_clearbuf(x); + } else { + pd_error(x, "failed to open DMX-device '%s'",devname); + } +} + +static void dmxout_doout(t_dmxout*x) { + int device = x->x_device; + if(device<=0) { + pd_error(x, "no DMX universe found"); + return; + } + + lseek (device, 0, SEEK_SET); /* set to the current channel */ + write (device, x->x_values, NUM_DMXVALUES); /* write the channel */ +} + + +static void dmxout_doout1(t_dmxout*x, short port, unsigned char value) +{ + x->x_values[port]=value; + dmxout_doout(x); +} + + +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>NUM_DMXVALUES) { + pd_error(x, "port %f out of bounds [0..%d]", x->x_port, NUM_DMXVALUES); + 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; + int i=0; + int errors=0; + + int port=x->x_port; + if((port+count)>=NUM_DMXVALUES) { + if(count>NUM_DMXVALUES)count=NUM_DMXVALUES; + port=NUM_DMXVALUES-count; + } + + 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; + } + x->x_values[port+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); +} + +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>=NUM_DMXVALUES) { + pd_error(x, "port %f out of bounds [0..%d]", f_baseport, NUM_DMXVALUES); + 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>NUM_DMXVALUES) { + pd_error(x, "upper port exceeds %d! clamping", NUM_DMXVALUES); + portrange=NUM_DMXVALUES-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) +{ +#ifdef DMX4PD_POSTBANNER + DMX4PD_POSTBANNER; +#endif + + 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); + class_addmethod(dmxout_class, (t_method)dmxout_open, gensym("open"), A_SYMBOL, A_NULL); + + 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); + + class_addmethod(dmxout_class2, (t_method)dmxout_open, gensym("open"), A_SYMBOL, A_NULL); +} |