This commit was generated by cvs2svn to compensate for changes in r352,svn2git-root

which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/pdp/; revision=353

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