diff options
Diffstat (limited to 'modules/pdp_noise.c')
| -rw-r--r-- | modules/pdp_noise.c | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/modules/pdp_noise.c b/modules/pdp_noise.c new file mode 100644 index 0000000..f1a4661 --- /dev/null +++ b/modules/pdp_noise.c @@ -0,0 +1,230 @@ +/* + * 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 |