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/*
* Pure Data Packet module.
* Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "pdp.h"
typedef struct pdp_noise_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_outlet0;
void *x_noisegen;
int x_packet0;
int x_queue_id;
int x_pdp_image_type;
unsigned int x_width;
unsigned int x_height;
} t_pdp_noise;
void pdp_noise_type(t_pdp_noise *x, t_symbol *s)
{
if (gensym("yv12") == s) {x->x_pdp_image_type = PDP_IMAGE_YV12; return;}
if (gensym("grey") == s) {x->x_pdp_image_type = PDP_IMAGE_GREY; return;}
x->x_pdp_image_type = -1;
}
void pdp_noise_random(t_pdp_noise *x, t_floatarg seed)
{
if (seed == 0.0f) seed = (float)random();
pdp_imageproc_random_setseed(x->x_noisegen, seed);
}
static void pdp_noise_createpacket_yv12(t_pdp_noise *x)
{
/* create new packet */
x->x_packet0 = pdp_packet_new_image_yv12(x->x_width, x->x_height);
/* seed the 16 bit rng with a new random number from the clib */
pdp_noise_random(x, 0.0f);
}
static void pdp_noise_generate_yv12(t_pdp_noise *x)
{
short int *data;
unsigned int w = x->x_width;
unsigned int h = x->x_height;
h = h + (h>>1);
data = (short int *) pdp_packet_data(x->x_packet0);
pdp_noise_random(x, 0.0f);
pdp_imageproc_random_process(x->x_noisegen, data, w, h);
return;
}
static void pdp_noise_createpacket_grey(t_pdp_noise *x)
{
/* create new packet */
x->x_packet0 = pdp_packet_new_image_grey(x->x_width, x->x_height);
/* seed the 16 bit rng with a new random number from the clib */
pdp_noise_random(x, 0.0f);
}
static void pdp_noise_generate_grey(t_pdp_noise *x)
{
unsigned int w = x->x_width;
unsigned int h = x->x_height;
short int *data = (short int *) pdp_packet_data(x->x_packet0);
data = (short int *) pdp_packet_data(x->x_packet0);
pdp_noise_random(x, 0.0f);
pdp_imageproc_random_process(x->x_noisegen, data, w, h);
return;
}
static void pdp_noise_sendpacket(t_pdp_noise *x, t_floatarg w, t_floatarg h)
{
/* propagate if valid */
pdp_pass_if_valid(x->x_outlet0, &x->x_packet0);
}
static void pdp_noise_bang(t_pdp_noise *x)
{
int encoding;
/* if we have an active packet, don't do anything */
if (-1 != x->x_packet0) return;
switch(x->x_pdp_image_type){
case PDP_IMAGE_YV12:
pdp_noise_createpacket_yv12(x); // don't create inside thread!!!
pdp_queue_add(x, pdp_noise_generate_yv12, pdp_noise_sendpacket, &x->x_queue_id);
break;
case PDP_IMAGE_GREY:
pdp_noise_createpacket_grey(x); // don't create inside thread!!!
pdp_queue_add(x, pdp_noise_generate_grey, pdp_noise_sendpacket, &x->x_queue_id);
break;
default:
break;
}
/* release the packet */
}
static void pdp_noise_dim(t_pdp_noise *x, t_floatarg w, t_floatarg h)
{
if (w<32.0f) w = 32.0f;
if (h<32.0f) h = 32.0f;
x->x_width = (unsigned int)w;
x->x_height = (unsigned int)h;
}
static void pdp_noise_free(t_pdp_noise *x)
{
/* remove callback from process queue */
pdp_queue_finish(x->x_queue_id);
/* tidy up */
pdp_packet_mark_unused(x->x_packet0);
pdp_imageproc_random_delete(x->x_noisegen);
}
t_class *pdp_noise_class;
void *pdp_noise_new(void)
{
int i;
t_pdp_noise *x = (t_pdp_noise *)pd_new(pdp_noise_class);
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
x->x_packet0 = -1;
x->x_queue_id = -1;
x->x_width = 320;
x->x_height = 240;
x->x_noisegen = pdp_imageproc_random_new();
pdp_noise_random(x, 0.0f);
pdp_noise_type(x, gensym("yv12"));
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_noise_setup(void)
{
pdp_noise_class = class_new(gensym("pdp_noise"), (t_newmethod)pdp_noise_new,
(t_method)pdp_noise_free, sizeof(t_pdp_noise), 0, A_NULL);
class_addmethod(pdp_noise_class, (t_method)pdp_noise_random, gensym("seed"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_noise_class, (t_method)pdp_noise_type, gensym("type"), A_SYMBOL, A_NULL);
class_addmethod(pdp_noise_class, (t_method)pdp_noise_dim, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
class_addmethod(pdp_noise_class, (t_method)pdp_noise_bang, gensym("bang"), A_NULL);
}
#ifdef __cplusplus
}
#endif
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