aboutsummaryrefslogtreecommitdiff
path: root/modules/pdp_scope.c
diff options
context:
space:
mode:
Diffstat (limited to 'modules/pdp_scope.c')
-rw-r--r--modules/pdp_scope.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/modules/pdp_scope.c b/modules/pdp_scope.c
new file mode 100644
index 0000000..6c0f5c0
--- /dev/null
+++ b/modules/pdp_scope.c
@@ -0,0 +1,312 @@
+/*
+ * 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"
+#include <string.h>
+
+#define BUFSIZE 2048
+
+typedef struct pdp_scope_data
+{
+ short int random_seed[4];
+
+}t_pdp_scope_data;
+
+typedef struct pdp_scope_struct
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_outlet *x_outlet0;
+
+ t_pdp_scope_data *x_data;
+ int x_packet0;
+ int x_queue_id;
+
+ int x_pdp_image_type;
+
+ unsigned int x_width;
+ unsigned int x_height;
+
+ float *x_buffer;
+ int x_needle;
+
+
+} t_pdp_scope;
+
+
+
+void pdp_scope_type(t_pdp_scope *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;
+
+}
+
+
+
+
+
+static void pdp_scope_createpacket_yv12(t_pdp_scope *x)
+{
+ t_pdp *header;
+
+ unsigned int w = x->x_width;
+ unsigned int h = x->x_height;
+
+ unsigned int size = w*h;
+ unsigned int totalnbpixels = size + (size >> 1);
+ unsigned int packet_size = totalnbpixels << 1;
+
+ x->x_packet0 = pdp_packet_new(PDP_IMAGE, packet_size);
+ header = pdp_packet_header(x->x_packet0);
+
+ header->info.image.encoding = PDP_IMAGE_YV12;
+ header->info.image.width = w;
+ header->info.image.height = h;
+
+ memset(pdp_packet_data(x->x_packet0), 0, packet_size);
+
+}
+
+static void pdp_scope_generate_yv12(t_pdp_scope *x)
+{
+ unsigned int w = x->x_width;
+ unsigned int h = x->x_height;
+ unsigned int size = w*h;
+ unsigned int totalnbpixels = size + (size >> 1);
+ short int *data = (short int *) pdp_packet_data(x->x_packet0);
+
+ unsigned int i;
+ int offset = x->x_needle;
+ int val;
+ unsigned int y;
+ float fh2 = (float)(h/2);
+
+ for (i=0; i<w; i++){
+ y = (h/2) + (int)(fh2 * -x->x_buffer[(offset - w + i) & (BUFSIZE - 1)]);
+ if (y>=h) y = h-1;
+
+ data[i + y*w] = 0x7fff;
+ }
+
+ return;
+
+}
+
+static void pdp_scope_createpacket_grey(t_pdp_scope *x)
+{
+ t_pdp *header;
+ short int *data;
+
+ unsigned int w = x->x_width;
+ unsigned int h = x->x_height;
+
+ unsigned int size = w*h;
+ unsigned int totalnbpixels = size;
+ unsigned int packet_size = totalnbpixels << 1;
+
+ /* create new packet */
+ x->x_packet0 = pdp_packet_new(PDP_IMAGE, packet_size);
+
+
+ header = pdp_packet_header(x->x_packet0);
+ data = (short int *) pdp_packet_data(x->x_packet0);
+
+ header->info.image.encoding = PDP_IMAGE_GREY;
+ header->info.image.width = w;
+ header->info.image.height = h;
+
+ memset(pdp_packet_data(x->x_packet0), 0, packet_size);
+
+}
+
+static void pdp_scope_generate_grey(t_pdp_scope *x)
+{
+ unsigned int w = x->x_width;
+ unsigned int h = x->x_height;
+ unsigned int totalnbpixels = x->x_width * x->x_height;
+ short int *data = (short int *) pdp_packet_data(x->x_packet0);
+
+ unsigned int i;
+ int offset = x->x_needle;
+ int val;
+ unsigned int y;
+ float fh2 = (float)(h/2);
+
+ for (i=0; i<w; i++){
+ y = (h/2) + (int)(fh2 * -x->x_buffer[(offset - w + i) & (BUFSIZE - 1)]);
+ if (y>=h) y = h-1;
+
+ data[i + y*w] = 0x7fff;
+ }
+
+ return;
+}
+
+static void pdp_scope_sendpacket(t_pdp_scope *x)
+{
+ /* propagate if valid */
+ pdp_pass_if_valid(x->x_outlet0, &x->x_packet0);
+}
+
+
+static void pdp_scope_bang(t_pdp_scope *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_scope_createpacket_yv12(x); // don't create inside thread!!!
+ pdp_scope_generate_yv12(x);
+ pdp_scope_sendpacket(x);
+ //pdp_queue_add(x, pdp_scope_generate_yv12, pdp_scope_sendpacket, &x->x_queue_id);
+ break;
+
+ case PDP_IMAGE_GREY:
+ pdp_scope_createpacket_grey(x); // don't create inside thread!!!
+ pdp_scope_generate_grey(x);
+ pdp_scope_sendpacket(x);
+ //pdp_queue_add(x, pdp_scope_generate_grey, pdp_scope_sendpacket, &x->x_queue_id);
+ break;
+
+ default:
+ break;
+
+ }
+
+
+ /* release the packet */
+
+}
+
+
+static void pdp_scope_dim(t_pdp_scope *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_scope_free(t_pdp_scope *x)
+{
+
+ /* remove callback from process queue */
+ pdp_queue_finish(x->x_queue_id);
+
+
+ /* tidy up */
+ pdp_packet_mark_unused(x->x_packet0);
+ free(x->x_data);
+
+}
+static t_int *pdp_scope_perform(t_int *w)
+{
+
+
+ t_float *in = (float *)(w[3]);
+ t_pdp_scope *x = (t_pdp_scope *)(w[1]);
+ t_int n = (t_int)(w[2]);
+ t_int i;
+
+ t_int offset = x->x_needle;
+
+ for (i=0; i<n; i++)
+ x->x_buffer[(offset+i)&(BUFSIZE-1)] = in[i];
+
+ x->x_needle = (offset + n ) & (BUFSIZE - 1);
+
+ return (w+4);
+
+}
+static void pdp_scope_dsp(t_pdp_scope *x, t_signal **sp)
+{
+ dsp_add(pdp_scope_perform, 3, x, sp[0]->s_n, sp[0]->s_vec);
+
+}
+
+t_class *pdp_scope_class;
+
+
+
+
+void *pdp_scope_new(void)
+{
+ int i;
+
+ t_pdp_scope *x = (t_pdp_scope *)pd_new(pdp_scope_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_f = 0.0;
+
+ x->x_data = (t_pdp_scope_data *)malloc(sizeof(t_pdp_scope_data));
+
+ pdp_scope_type(x, gensym("yv12"));
+
+ x->x_buffer = (float *)malloc(sizeof(float) * BUFSIZE);
+ x->x_needle = 0;
+
+ return (void *)x;
+}
+
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+
+void pdp_scope_setup(void)
+{
+
+
+ pdp_scope_class = class_new(gensym("pdp_scope~"), (t_newmethod)pdp_scope_new,
+ (t_method)pdp_scope_free, sizeof(t_pdp_scope), 0, A_NULL);
+
+ CLASS_MAINSIGNALIN(pdp_scope_class, t_pdp_scope, x_f);
+
+ class_addmethod(pdp_scope_class, (t_method)pdp_scope_type, gensym("type"), A_SYMBOL, A_NULL);
+ class_addmethod(pdp_scope_class, (t_method)pdp_scope_dim, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_scope_class, (t_method)pdp_scope_bang, gensym("bang"), A_NULL);
+ class_addmethod(pdp_scope_class, (t_method)pdp_scope_dsp, gensym("dsp"), 0);
+}
+
+#ifdef __cplusplus
+}
+#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-16 17:47:40 +0000