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