added files straight from Yves' sources

svn path=/trunk/externals/unauthorized/; revision=859

7 files changed, 1032 insertions, 0 deletions

diff --git a/scratcher~/CHANGES.LOG b/scratcher~/CHANGES.LOG
new file mode 100644
index 0000000..6c9683e
--- /dev/null
+++ b/scratcher~/CHANGES.LOG
@@ -0,0 +1,19 @@
+0.6
+  fixed a crash when resizing
+0.5
+  introduced turntable inertia
+  allow playing when the scratcher is stopped
+0.4.1
+  little optimisation in movement processing
+0.4
+  change algorithm, new one requires a small block size
+  added maximum speed limit
+  added ability to toggle speed line
+  suppressed internal velocity measurement
+  ( because time measurement is not reliable )
+0.3
+  introduced internal velocity measurement
+0.2
+  added sensibility setting
+0.1
+  first implementation
diff --git a/scratcher~/INSTALL b/scratcher~/INSTALL
new file mode 100644
index 0000000..a99e2c1
--- /dev/null
+++ b/scratcher~/INSTALL
@@ -0,0 +1,15 @@
+untar in /my/pd/dir/externs
+
+cd /my/pd/dir/externs/scratcher~
+
+make clean 
+
+make
+
+make install
+
+open help-scratcher~.pd
+
+Thanx for getting here.
+Yves/
+comments and bugs @ ydegoyon@free.fr
diff --git a/scratcher~/README b/scratcher~/README
new file mode 100644
index 0000000..2958cb6
--- /dev/null
+++ b/scratcher~/README
@@ -0,0 +1,18 @@
+Version 0.01 

+copyleft 2001 by Yves Degoyon

+tarballs and updates available @ http://ydegoyon.free.fr

+

+scratcher~ : records a sound and, then, let's you scratch it with your mouse.

+

+To install scratcher~, follow the steps from INSTALL

+

+This software is published under GPL terms.

+

+This is software with ABSOLUTELY NO WARRANTY.

+Use it at your OWN RISK. It's possible to damage e.g. hardware or your hearing

+due to a bug or for other reasons. 

+patents.

+

+*****************************************************************************

+

+

diff --git a/scratcher~/help-scratcher~.pd b/scratcher~/help-scratcher~.pd
new file mode 100644
index 0000000..4a9149c
--- /dev/null
+++ b/scratcher~/help-scratcher~.pd
@@ -0,0 +1,7 @@
+#N canvas 0 0 450 300 10;
+#X obj 174 121 rs-scratcher~;
+#X text 201 77 Playing with the block size \,;
+#X text 201 87 so everything's in the subpatch;
+#X obj 171 160 dac~;
+#X connect 0 0 3 0;
+#X connect 0 0 3 1;
diff --git a/scratcher~/rs-scratcher~.pd b/scratcher~/rs-scratcher~.pd
new file mode 100644
index 0000000..87b0026
--- /dev/null
+++ b/scratcher~/rs-scratcher~.pd
@@ -0,0 +1,103 @@
+#N canvas 106 13 862 585 10;
+#X msg 36 550 \; pd dsp 1;
+#X msg 101 551 \; pd dsp 0;
+#X text 24 13 Scratcher~ : lets you record a sound;
+#X text 23 24 and \, then \, scratch it !!!;
+#X text 599 557 Comments and bugs @ ydegoyon@free.fr;
+#X obj 313 260 scratcher~ 151290 200 200 200 2 1e-04;
+#X obj 302 475 *~ 1;
+#X obj 334 474 / 100;
+#X floatatom 373 474 5 0 0;
+#X msg 31 88 bang;
+#X obj 31 108 openpanel;
+#X msg 33 227 resize \$1;
+#X obj 31 130 t s b;
+#X obj 31 168 pack s s;
+#X msg 33 189 read -resize \$1 \$2;
+#X obj 77 128 float \$0;
+#X obj 100 168 makefilename %d-sonosample;
+#X text 32 68 Step 1 : Load a sound file;
+#X obj 31 147 route float;
+#X text 84 80 ( a small one );
+#X msg 524 45 play;
+#X text 522 24 Step 3 : Play the sound and scratch with the mouse;
+#X msg 559 45 stop;
+#X msg 527 243 reset;
+#X text 572 246 Reset normal reading speed;
+#X obj 36 524 loadbang;
+#X text 469 493 Note : the red line indicates the reading speed;
+#X text 446 527 Note 2 : only vertical movement will change reading
+speed;
+#X obj 176 557 table \$0-sonosample;
+#X msg 524 88 sensibility \$1;
+#X msg 561 65 25;
+#X floatatom 659 66 5 0 0;
+#X msg 524 66 5;
+#X text 620 88 Set mouse sensibility ( default : 25 );
+#X obj 33 206 soundfiler;
+#X msg 607 223 showspeed 1;
+#X msg 527 223 showspeed 0;
+#X text 687 221 Toggle speed line display;
+#X msg 305 119 record;
+#X msg 269 119 bang;
+#X text 214 98 Step 2 : Record the sound;
+#X floatatom 664 120 5 0 0;
+#X msg 526 141 maxspeed \$1;
+#X text 603 140 Set speed limit ( default : 2 );
+#X msg 526 119 2;
+#X msg 569 119 1.5;
+#X msg 603 119 1;
+#X msg 635 119 0.5;
+#X obj 257 146 tabplay~ \$0-sonosample;
+#X msg 592 65 100;
+#X msg 622 65 200;
+#X floatatom 645 174 5 0 0;
+#X text 603 193 Set turntable inertia ( default : 0.01 );
+#X msg 525 193 inertia \$1;
+#X msg 609 173 0.01;
+#X msg 570 173 0.001;
+#X msg 526 173 1e-04;
+#X obj 289 509 outlet~;
+#X connect 5 0 6 0;
+#X connect 6 0 57 0;
+#X connect 7 0 6 1;
+#X connect 8 0 7 0;
+#X connect 9 0 10 0;
+#X connect 10 0 12 0;
+#X connect 11 0 5 0;
+#X connect 12 0 13 0;
+#X connect 12 1 15 0;
+#X connect 13 0 14 0;
+#X connect 14 0 34 0;
+#X connect 15 0 18 0;
+#X connect 16 0 13 1;
+#X connect 18 0 16 0;
+#X connect 20 0 5 0;
+#X connect 22 0 5 0;
+#X connect 23 0 5 0;
+#X connect 25 0 0 0;
+#X connect 29 0 5 0;
+#X connect 30 0 29 0;
+#X connect 31 0 29 0;
+#X connect 32 0 29 0;
+#X connect 34 0 11 0;
+#X connect 35 0 5 0;
+#X connect 36 0 5 0;
+#X connect 38 0 5 0;
+#X connect 39 0 38 0;
+#X connect 39 0 48 0;
+#X connect 41 0 42 0;
+#X connect 42 0 5 0;
+#X connect 44 0 42 0;
+#X connect 45 0 42 0;
+#X connect 46 0 42 0;
+#X connect 47 0 42 0;
+#X connect 48 0 5 0;
+#X connect 48 0 6 0;
+#X connect 49 0 29 0;
+#X connect 50 0 29 0;
+#X connect 51 0 53 0;
+#X connect 53 0 5 0;
+#X connect 54 0 53 0;
+#X connect 55 0 53 0;
+#X connect 56 0 53 0;
diff --git a/scratcher~/scratcher~.c b/scratcher~/scratcher~.c
new file mode 100644
index 0000000..9095454
--- /dev/null
+++ b/scratcher~/scratcher~.c
@@ -0,0 +1,793 @@
+/*------------------------ scratcher~ ------------------------------------------ */
+/*                                                                              */
+/* scratcher~ : lets you record, and then, scratch a sound.                     */
+/* constructor : scratcher~                                                     */
+/*                                                                              */
+/* Copyleft Yves Degoyon ( ydegoyon@free.fr )                                   */
+/*                                                                              */
+/* 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.                       */
+/*                                                                              */
+/* See file LICENSE for further informations on licensing terms.                */
+/*                                                                              */
+/* 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.  */
+/*                                                                              */
+/* Based on PureData by Miller Puckette and others.                             */
+/*                                                                              */
+/* "I've lost my kids and wife"                                                 */
+/* "Because I got high da da dap da da dap"                                     */
+/* Afro Man -- Because I Got High                                               */
+/* ---------------------------------------------------------------------------- */
+
+
+
+#include <sys/types.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <malloc.h>
+#include <ctype.h>
+#include <pthread.h>
+#include <time.h>
+#include <sys/time.h>
+#ifdef UNIX
+#include <unistd.h>
+#endif
+#ifdef NT
+#define M_PI 3.14159265358979323846
+#endif
+#include <math.h>
+
+#include "m_imp.h"
+#include "g_canvas.h"
+#include "t_tk.h"
+
+static int guidebug=0;
+static int ignorevisible=1; // ignore visible test
+                         // because this seems to lead to bad refresh
+                         // wait for a fix                            
+
+#define SYS_VGUI2(a,b) if (guidebug) \
+                         post(a,b);\
+                         sys_vgui(a,b)
+
+#define SYS_VGUI3(a,b,c) if (guidebug) \
+                         post(a,b,c);\
+                         sys_vgui(a,b,c)
+
+#define SYS_VGUI4(a,b,c,d) if (guidebug) \
+                         post(a,b,c,d);\
+                         sys_vgui(a,b,c,d)
+
+#define SYS_VGUI5(a,b,c,d,e) if (guidebug) \
+                         post(a,b,c,d,e);\
+                         sys_vgui(a,b,c,d,e)
+
+#define SYS_VGUI6(a,b,c,d,e,f) if (guidebug) \
+                         post(a,b,c,d,e,f);\
+                         sys_vgui(a,b,c,d,e,f)
+
+#define SYS_VGUI7(a,b,c,d,e,f,g) if (guidebug) \
+                         post(a,b,c,d,e,f,g );\
+                         sys_vgui(a,b,c,d,e,f,g)
+
+#define SYS_VGUI8(a,b,c,d,e,f,g,h) if (guidebug) \
+                         post(a,b,c,d,e,f,g,h);\
+                         sys_vgui(a,b,c,d,e,f,g,h)
+
+#define SYS_VGUI9(a,b,c,d,e,f,g,h,i) if (guidebug) \
+                         post(a,b,c,d,e,f,g,h,i );\
+                         sys_vgui(a,b,c,d,e,f,g,h,i)
+
+#define SYS_VGUI10(a,b,c,d,e,f,g,h,i,j) if (guidebug) \
+                         post(a,b,c,d,e,f,g,h,i,j );\
+                         sys_vgui(a,b,c,d,e,f,g,h,i,j)
+
+#define SYS_VGUI11(a,b,c,d,e,f,g,h,i,j,k) if (guidebug) \
+                         post(a,b,c,d,e,f,g,h,i,j,k );\
+                         sys_vgui(a,b,c,d,e,f,g,h,i,j,k)
+
+#define DEFAULT_SCRATCHER_SIZE 88200   // 2 seconds at 44100 hertz
+#define DEFAULT_SCRATCHER_WIDTH 200  
+#define DEFAULT_SCRATCHER_HEIGHT 200  
+#define DEFAULT_SCRATCHER_SENSIBILITY 25  
+#define DEFAULT_SCRATCHER_MAX_SPEED 2.0
+#define DEFAULT_TURNTABLE_INERTIA 0.01  
+
+#define SCRATCHER_NB_GROOVES 20  
+#define SCRATCHER_MOVE_TIMEOUT 20
+
+static char   *scratcher_version = "scratcher~: version 0.6, written by Yves Degoyon (ydegoyon@free.fr)";
+
+static t_class *scratcher_class;
+t_widgetbehavior scratcher_widgetbehavior;
+
+typedef struct _scratcher
+{
+    t_object x_obj;
+
+    t_int x_size;                  /* size of the recorded sound ( in samples ) */
+    t_float x_samplerate;          /* sample rate */
+    t_int x_blocksize;             /* current block size ( might be modified by block~ object ) */
+    t_float x_readpos;             /* data's playing position */
+    t_int x_writepos;              /* data's recording position */
+    t_int x_play;                  /* playing on/off flag */
+    t_float x_readspeed;           /* number of grouped blocks for reading */
+    t_float x_maxspeed;            /* maximum speed limit                  */
+    t_float x_record;              /* flag to start recording process */
+    t_int x_empty;                 /* flag to indicate it's a brand new scratcher   */
+    t_float x_speedinc;            /* speed increment                               */
+    long long x_lastmovetime;      /* instant ( in ms ) of the last movement        */
+    t_float *x_sdata;              /* sound data                                */
+    t_int   x_sensibility;         /* sensibility ( amount of change for a dy ) */
+    t_int   x_motioned;            /* flag to indicate the mouse motion         */
+    t_int   x_mousemoved;          /* flag to indicate the mouse movement       */
+    t_float x_inertia;             /* turntable inertia                         */
+
+           /* graphical data block */
+    t_int x_selected;              /* flag to remember if we are seleted or not   */
+    t_int x_width;                 /* width of the graphical object               */
+    t_int x_height;                /* height of the graphical object              */
+    t_int x_showspeed;             /* toggle on/off speed line                    */
+    t_glist *x_glist;              /* keep graphic context for various operations */
+
+    t_float x_f;                   /* float needed for signal input */
+
+} t_scratcher;
+
+/* ------------------------ drawing functions ---------------------------- */
+
+static void scratcher_draw_new(t_scratcher *x, t_glist *glist)
+{
+  t_canvas *canvas=glist_getcanvas(glist);
+  t_int ci;
+
+    SYS_VGUI7(".x%x.c create oval %d %d %d %d -fill #000000 -tags %xSCRATCHER\n",
+	     canvas, x->x_obj.te_xpix, x->x_obj.te_ypix,
+	     x->x_obj.te_xpix + x->x_width, 
+             x->x_obj.te_ypix + x->x_height,
+	     x);
+    for ( ci=0; ci<SCRATCHER_NB_GROOVES; ci ++)
+    {
+      SYS_VGUI8(".x%x.c create oval %d %d %d %d -outline #FFFFFF -tags %xGROOVE%d\n",
+	     canvas, x->x_obj.te_xpix + ci*x->x_width/(2*SCRATCHER_NB_GROOVES), 
+             x->x_obj.te_ypix + ci*x->x_height/(2*SCRATCHER_NB_GROOVES),
+	     x->x_obj.te_xpix + x->x_width - ci*x->x_width/(2*SCRATCHER_NB_GROOVES), 
+             x->x_obj.te_ypix + x->x_height - ci*x->x_height/(2*SCRATCHER_NB_GROOVES),
+	     x, ci);
+    }
+    if ( x->x_showspeed )
+    {
+       SYS_VGUI7( ".x%x.c create line %d %d %d %d -fill #FF0000 -tags %xSPEEDBAR -width 3\n",
+               canvas, x->x_obj.te_xpix+x->x_width/2,
+               x->x_obj.te_ypix+x->x_height/2,
+               x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1. )),
+               x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1. )), 
+               x );
+    }
+    SYS_VGUI7(".x%x.c create rectangle %d %d %d %d -tags %xFSCRATCHER\n",
+	     canvas, x->x_obj.te_xpix, x->x_obj.te_ypix,
+	     x->x_obj.te_xpix + x->x_width, 
+             x->x_obj.te_ypix + x->x_height,
+	     x);
+    canvas_fixlinesfor( canvas, (t_text*)x );
+}
+
+static void scratcher_draw_delete(t_scratcher *x, t_glist *glist)
+{
+  t_int ci;
+
+    if ( glist_isvisible( glist ) )
+    {
+       SYS_VGUI3( ".x%x.c delete %xSCRATCHER\n", glist_getcanvas( glist ), x );
+       SYS_VGUI3( ".x%x.c delete %xFSCRATCHER\n", glist_getcanvas( glist ), x );
+       SYS_VGUI3( ".x%x.c delete %xSPEEDBAR\n", glist_getcanvas( glist ), x );
+       for ( ci=0; ci<SCRATCHER_NB_GROOVES; ci ++)
+       {
+          SYS_VGUI4( ".x%x.c delete %xGROOVE%d\n", glist_getcanvas( glist ), x, ci );
+       }
+    }
+}
+
+static void scratcher_draw_move(t_scratcher *x, t_glist *glist)
+{
+  t_canvas *canvas=glist_getcanvas(glist);
+  t_int ci;
+
+   if ( glist_isvisible( x->x_glist ) )
+   {
+    SYS_VGUI7(".x%x.c coords %xSCRATCHER %d %d %d %d\n",
+	     canvas, x,
+	     x->x_obj.te_xpix-1, x->x_obj.te_ypix-1,
+	     x->x_obj.te_xpix+x->x_width+1, 
+             x->x_obj.te_ypix+x->x_height+1);
+    SYS_VGUI7(".x%x.c coords %xFSCRATCHER %d %d %d %d\n",
+	     canvas, x,
+	     x->x_obj.te_xpix-1, x->x_obj.te_ypix-1,
+	     x->x_obj.te_xpix+x->x_width+1, 
+             x->x_obj.te_ypix+x->x_height+1);
+    if ( x->x_showspeed )
+    {
+       SYS_VGUI7( ".x%x.c coords %xSPEEDBAR %d %d %d %d\n",
+               canvas, x,
+               x->x_obj.te_xpix+x->x_width/2,
+               x->x_obj.te_ypix+x->x_height/2,
+               x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1 )),
+               x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1 ))
+               );
+    }
+    for ( ci=0; ci<SCRATCHER_NB_GROOVES; ci ++)
+    {
+      SYS_VGUI8(".x%x.c coords %xGROOVE%d %d %d %d %d\n",
+	     canvas, x, ci,
+             x->x_obj.te_xpix + ci*x->x_width/(2*SCRATCHER_NB_GROOVES), 
+             x->x_obj.te_ypix + ci*x->x_height/(2*SCRATCHER_NB_GROOVES),
+	     x->x_obj.te_xpix + x->x_width - ci*x->x_width/(2*SCRATCHER_NB_GROOVES), 
+             x->x_obj.te_ypix + x->x_height - ci*x->x_height/(2*SCRATCHER_NB_GROOVES)
+	     );
+    }
+    canvas_fixlinesfor( canvas, (t_text*)x );
+   }
+}
+
+static void scratcher_draw_select(t_scratcher* x,t_glist* glist)
+{
+   t_canvas *canvas=glist_getcanvas(glist);
+
+   if ( glist_isvisible( x->x_glist ) )
+   {
+    if(x->x_selected)
+    {
+    }
+    else
+    {
+    }
+   }
+}
+
+/* ------------------------ widget callbacks ----------------------------- */
+
+
+static void scratcher_getrect(t_gobj *z, t_glist *owner,
+			    int *xp1, int *yp1, int *xp2, int *yp2)
+{
+   t_scratcher* x = (t_scratcher*)z;
+
+   *xp1 = x->x_obj.te_xpix;
+   *yp1 = x->x_obj.te_ypix;
+   *xp2 = x->x_obj.te_xpix+x->x_width;
+   *yp2 = x->x_obj.te_ypix+x->x_height;
+}
+
+static void scratcher_save(t_gobj *z, t_binbuf *b)
+{
+   t_scratcher *x = (t_scratcher *)z;
+
+   binbuf_addv(b, "ssiisiiiiff", gensym("#X"),gensym("obj"),
+		(t_int)x->x_obj.te_xpix, (t_int)x->x_obj.te_ypix,
+		gensym("scratcher~"), x->x_size, x->x_width, x->x_height, 
+                x->x_sensibility, x->x_maxspeed, x->x_inertia );
+   binbuf_addv(b, ";");
+}
+
+static void scratcher_select(t_gobj *z, t_glist *glist, int selected)
+{
+   t_scratcher *x = (t_scratcher *)z;
+
+   x->x_selected = selected;
+   scratcher_draw_select( x, glist );
+}
+
+static void scratcher_vis(t_gobj *z, t_glist *glist, int vis)
+{
+   t_scratcher *x = (t_scratcher *)z;
+   t_rtext *y;
+
+   if (vis)
+   {
+      scratcher_draw_new( x, glist );
+   }
+   else
+   {
+      scratcher_draw_delete( x, glist );
+   }
+}
+
+static void scratcher_delete(t_gobj *z, t_glist *glist)
+{
+    canvas_deletelinesfor( glist_getcanvas(glist), (t_text *)z);
+}
+
+static void scratcher_displace(t_gobj *z, t_glist *glist, int dx, int dy)
+{
+  t_scratcher *x = (t_scratcher *)z;
+
+    x->x_obj.te_xpix += dx;
+    x->x_obj.te_ypix += dy;
+
+    scratcher_draw_move( x, glist );
+}
+
+static void scratcher_motion(t_scratcher *x, t_floatarg dx, t_floatarg dy)
+{
+  struct timeval tv;
+  struct timezone tz;
+
+   // post( "scratcher_motion dx=%f dy=%f", dx, dy );
+
+   x->x_speedinc += dy / x->x_sensibility;
+
+   x->x_mousemoved = 1;
+   // get current time in ms
+   gettimeofday( &tv, &tz );
+   x->x_lastmovetime = tv.tv_sec*1000 + tv.tv_usec/1000;
+   // post( "scratcher~ : move time : %ld", x->x_lastmovetime );
+
+   if ( x->x_showspeed )
+   {
+      SYS_VGUI7( ".x%x.c coords %xSPEEDBAR %d %d %d %d\n",
+              glist_getcanvas( x->x_glist ), x,
+              x->x_obj.te_xpix+x->x_width/2,
+              x->x_obj.te_ypix+x->x_height/2,
+              x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1 )),
+              x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1 ))
+              );
+   }
+}
+
+static void scratcher_properties(t_gobj *z, t_glist *owner)
+{
+   char buf[800];
+   t_scratcher *x=(t_scratcher *)z;
+
+   sprintf(buf, "pdtk_scratcher_dialog %%s %d %d\n",
+            x->x_width, x->x_height );
+   // post("scratcher_properties : %s", buf );
+   gfxstub_new(&x->x_obj.ob_pd, x, buf);
+}
+
+static void scratcher_dialog(t_scratcher *x, t_symbol *s, int argc, t_atom *argv)
+{
+   if ( !x ) {
+     post( "scratcher : error :tried to set properties on an unexisting object" );
+   }
+   if ( argc != 2 )
+   {
+      post( "scratcher : error in the number of arguments ( %d instead of 2 )", argc );
+      return;
+   }
+   if ( argv[0].a_type != A_FLOAT || argv[1].a_type != A_FLOAT ) {
+      post( "scratcher : wrong arguments" );
+      return;
+   }
+   x->x_width = (int)argv[0].a_w.w_float;
+   x->x_height = (int)argv[1].a_w.w_float;
+   scratcher_draw_delete(x, x->x_glist);
+   scratcher_draw_new(x, x->x_glist);
+}
+
+    /* reset reading speed */
+static void scratcher_reset(t_scratcher *x)
+{
+   x->x_readspeed=1.;
+   if ( x->x_showspeed )
+   {
+      SYS_VGUI7( ".x%x.c coords %xSPEEDBAR %d %d %d %d\n",
+              glist_getcanvas( x->x_glist ), x,
+              x->x_obj.te_xpix+x->x_width/2,
+              x->x_obj.te_ypix+x->x_height/2,
+              x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1 )),
+              x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1 ))
+              );
+   }
+}
+
+static int scratcher_click(t_gobj *z, struct _glist *glist,
+			    int xpix, int ypix, int shift, int alt, int dbl, int doit)
+{
+  t_scratcher* x = (t_scratcher *)z;
+
+    // post( "scratcher_click : x=%d y=%d doit=%d alt=%d, shift=%d", xpix, ypix, doit, alt, shift );
+    if ( doit )
+    {
+      // activate motion callback
+      glist_grab( glist, &x->x_obj.te_g, (t_glistmotionfn)scratcher_motion,
+                  0, xpix, ypix );
+      x->x_readspeed=0.;
+      x->x_motioned = 1;
+      if ( x->x_showspeed )
+      {
+        SYS_VGUI7( ".x%x.c coords %xSPEEDBAR %d %d %d %d\n",
+              glist_getcanvas( x->x_glist ), x,
+              x->x_obj.te_xpix+x->x_width/2,
+              x->x_obj.te_ypix+x->x_height/2,
+              x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1 )),
+              x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1 ))
+              );
+      }
+    }
+    else
+    {
+      if ( x->x_play ) scratcher_reset(x);
+      x->x_motioned = 0;
+    }
+    return (1);
+}
+
+	/* clean up */
+static void scratcher_free(t_scratcher *x)    
+{
+    if ( x->x_sdata != NULL ) {
+       freebytes(x->x_sdata, x->x_size*sizeof(t_float) );
+       post( "scratcher~ : freed %d bytes", x->x_size*sizeof(t_float) );
+       x->x_sdata = NULL;
+    }
+}
+
+    /* allocate tables for storing sample data */
+static t_int scratcher_allocate(t_scratcher *x)
+{
+    if ( !(x->x_sdata = getbytes( x->x_size*sizeof(float) ) ) ) {
+       post( "scratcher~ : could not allocate %d bytes", x->x_size*sizeof(t_float) );
+       return -1;
+    } else {
+       post( "scratcher~ : allocated %d bytes", x->x_size*sizeof(t_float) );
+    }
+    return 0;
+}
+
+    /* reallocate tables for storing sample data */
+static t_int scratcher_reallocate(t_scratcher *x, t_int ioldsize, t_int inewsize)
+{
+  t_float *pdata;
+
+    pdata = x->x_sdata;
+    if ( !(x->x_sdata = getbytes( inewsize*sizeof(float) ) ) ) {
+       post( "scratcher~ : could not allocate %d bytes", inewsize*sizeof(t_float) );
+       return -1;
+    } else {
+       post( "scratcher~ : allocated %d bytes", inewsize*sizeof(t_float) );
+    }
+    if ( pdata != NULL ) {
+       freebytes(pdata, ioldsize*sizeof(t_float) );
+       post( "scratcher~ : freed %d bytes", ioldsize*sizeof(t_float) );
+    }
+    return 0;
+}
+
+    /* records or playback the scratcher */
+static t_int *scratcher_perform(t_int *w)
+{
+    t_float *in = (t_float *)(w[1]);
+    t_float *out = (t_float *)(w[2]);
+    t_int n = (int)(w[3]);                      /* number of samples */
+    t_scratcher *x = (t_scratcher *)(w[4]);
+    struct timeval tv;
+    struct timezone tz;
+    long long perftime = 0L;
+
+    x->x_readspeed += x->x_speedinc;
+    if ( x->x_readspeed > x->x_maxspeed )
+    {
+       x->x_readspeed = x->x_maxspeed;
+    }
+    if ( x->x_readspeed < -x->x_maxspeed )
+    {
+       x->x_readspeed = -x->x_maxspeed;
+    }
+    x->x_speedinc = 0;
+
+    // if the mouse hasn't moved for a certain time, reset speed
+
+    if ( x->x_mousemoved )
+    {
+       // get current time in ms
+       gettimeofday( &tv, &tz );
+       perftime = tv.tv_sec*1000 + tv.tv_usec/1000;
+       if ( perftime - x->x_lastmovetime > SCRATCHER_MOVE_TIMEOUT )
+       {
+          // post( "scratcher~ : mouse timeout (m=%ld)", perftime );
+          // post( "scratcher~ : (m=%ld)", x->x_lastmovetime );
+          if ( x->x_readspeed > 0. )
+          {
+             x->x_readspeed -= x->x_inertia;
+             // post( "scratcher~ : dec speed" );
+          }
+          if ( x->x_readspeed < 0. )
+          {
+             x->x_readspeed += x->x_inertia;
+             // post( "scratcher~ : inc speed" );
+          }
+          if ( ( x->x_readspeed <= x->x_inertia && x->x_readspeed > 0 ) ||
+               ( x->x_readspeed >= -x->x_inertia && x->x_readspeed < 0 ) ) 
+          {
+             x->x_mousemoved = 0;
+             x->x_readspeed = 0.;
+          }
+          if ( x->x_showspeed )
+          {
+            SYS_VGUI7( ".x%x.c coords %xSPEEDBAR %d %d %d %d\n",
+               glist_getcanvas( x->x_glist ), x,
+               x->x_obj.te_xpix+x->x_width/2,
+               x->x_obj.te_ypix+x->x_height/2,
+               x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1 )),
+               x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1 ))
+               );
+          }
+        }
+    }
+
+    while (n--) {
+        // eventually records input
+        if ( x->x_record) {
+           *(x->x_sdata+x->x_writepos)=*in;
+           x->x_writepos++;
+           if ( x->x_writepos >= x->x_size ) {
+             x->x_record=0;
+             x->x_writepos=0;
+             if ( x->x_empty ) x->x_empty = 0;
+             // post( "scratcher~ : stopped recording" );
+           }
+        }
+        // set outputs
+        // if ( x->x_play) {
+            *out = *(x->x_sdata+(int)x->x_readpos);
+            x->x_readpos+=x->x_readspeed;
+            if ( x->x_readpos < 0 ) x->x_readpos = x->x_size-1;
+            if ( x->x_readpos >= x->x_size ) x->x_readpos = 0;
+        // } else {
+        //     *out=0.0;
+        // }
+
+        in++;out++;
+    }
+
+    return (w+5);
+}
+
+static void scratcher_dsp(t_scratcher *x, t_signal **sp)
+{
+   dsp_add(scratcher_perform, 4, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n, x);
+}
+
+    /* play the sound */
+static void scratcher_play(t_scratcher *x)
+{
+   x->x_play=1;
+   // reset read position
+   x->x_readpos=0;
+   x->x_readspeed=1.;
+   if ( x->x_showspeed )
+   {
+     SYS_VGUI3( ".x%x.c delete %xSPEEDBAR\n", glist_getcanvas( x->x_glist ), x );
+     SYS_VGUI7( ".x%x.c create line %d %d %d %d -fill #FF0000 -tags %xSPEEDBAR -width 3\n",
+             glist_getcanvas( x->x_glist ), x->x_obj.te_xpix+x->x_width/2,
+             x->x_obj.te_ypix+x->x_height/2,
+             x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1. )),
+             x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1. )), 
+             x );
+   }
+}
+
+    /* stop playing   */
+static void scratcher_stop(t_scratcher *x)
+{
+   x->x_play=0;
+   // reset read position
+   x->x_readpos=0;
+   x->x_readspeed=0.;
+   if ( x->x_showspeed )
+   {
+     SYS_VGUI3( ".x%x.c delete %xSPEEDBAR\n", glist_getcanvas( x->x_glist ), x );
+     SYS_VGUI7( ".x%x.c create line %d %d %d %d -fill #FF0000 -tags %xSPEEDBAR -width 3\n",
+             glist_getcanvas( x->x_glist ), x->x_obj.te_xpix+x->x_width/2,
+             x->x_obj.te_ypix+x->x_height/2,
+             x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1. )),
+             x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1. )), 
+             x );
+   }
+}
+
+    /* record the sound */
+static void scratcher_record(t_scratcher *x)
+{
+   scratcher_stop(x);
+   x->x_record=1;
+   x->x_writepos=0;
+}
+
+    /* resize sound */
+static void scratcher_resize(t_scratcher *x, t_floatarg fnewsize )
+{
+  t_int dspstate;   
+  struct timespec ts;        
+
+    if (fnewsize <= 0) {
+        post( "scratcher~ : error : wrong size" );
+        return;
+    }
+    post( "scratcher~ : reallocating tables" );
+    x->x_record = 0;
+    x->x_play = 0;
+
+    scratcher_reallocate(x, x->x_size, fnewsize);
+    x->x_size = fnewsize;
+}
+
+    /* set sensibility */
+static void scratcher_sensibility(t_scratcher *x, t_floatarg fsensibility )
+{
+    if (fsensibility <= 0) {
+        post( "scratcher~ : error : wrong sensibility" );
+        return;
+    }
+    x->x_sensibility = fsensibility;
+}
+
+    /* set maximum speed */
+static void scratcher_maxspeed(t_scratcher *x, t_floatarg fmaxspeed )
+{
+    if (fmaxspeed < 0) {
+        post( "scratcher~ : error : wrong maximum speed" );
+        return;
+    }
+    x->x_maxspeed = fmaxspeed;
+}
+
+    /* set turntable inertia */
+static void scratcher_inertia(t_scratcher *x, t_floatarg finertia )
+{
+    if (finertia < 0) {
+        post( "scratcher~ : error : wrong inertia" );
+        return;
+    }
+    x->x_inertia = finertia;
+}
+
+    /* toggle speed line */
+static void scratcher_showspeed(t_scratcher *x, t_floatarg fshowspeed )
+{
+    if (fshowspeed == 0) {
+      x->x_showspeed = 0;
+      SYS_VGUI3( ".x%x.c delete %xSPEEDBAR\n", glist_getcanvas( x->x_glist ), x );
+    }
+    else
+    {
+      x->x_showspeed = 1;
+      SYS_VGUI3( ".x%x.c delete %xSPEEDBAR\n", glist_getcanvas( x->x_glist ), x );
+      SYS_VGUI7( ".x%x.c create line %d %d %d %d -fill #FF0000 -tags %xSPEEDBAR -width 3\n",
+               glist_getcanvas( x->x_glist ), x->x_obj.te_xpix+x->x_width/2,
+               x->x_obj.te_ypix+x->x_height/2,
+               x->x_obj.te_xpix+x->x_width/2 + (int)(x->x_width/2*cos( x->x_readspeed - 1. )),
+               x->x_obj.te_ypix+x->x_height/2 - (int)(x->x_width/2*sin( x->x_readspeed - 1. )), 
+               x );
+    }
+}
+
+static void *scratcher_new(t_symbol *s, int argc, t_atom *argv)
+{
+    t_scratcher *x = (t_scratcher *)pd_new(scratcher_class);
+    outlet_new(&x->x_obj, &s_signal);
+    
+    // new scratcher created from the gui
+    if ( argc != 0 )
+    {
+      if ( argc < 3 )
+      {
+        post( "scratcher~ : error in the number of arguments ( < 3 )", argc );
+        return NULL;
+      }
+      if ( argv[0].a_type != A_FLOAT || 
+           argv[1].a_type != A_FLOAT ||
+           argv[2].a_type != A_FLOAT ) {
+        post( "scratcher~ : wrong arguments" );
+        return NULL;
+      }
+      x->x_size = argv[0].a_w.w_float;
+      x->x_width = argv[1].a_w.w_float;
+      x->x_height = argv[2].a_w.w_float;
+      if ( argc >= 4 ) 
+      {
+          x->x_sensibility = argv[3].a_w.w_float;
+      }
+      else
+      {
+          x->x_sensibility = DEFAULT_SCRATCHER_SENSIBILITY;
+      }
+      if ( argc >= 5 ) 
+      {
+          x->x_maxspeed = argv[4].a_w.w_float;
+      }
+      else
+      {
+          x->x_maxspeed = DEFAULT_SCRATCHER_MAX_SPEED;
+      }
+      if ( argc >= 6 ) 
+      {
+          x->x_inertia = argv[5].a_w.w_float;
+      }
+      else
+      {
+          x->x_inertia = DEFAULT_TURNTABLE_INERTIA;
+      }
+    }
+    else
+    {
+       x->x_size = DEFAULT_SCRATCHER_SIZE;
+       x->x_width = DEFAULT_SCRATCHER_WIDTH;
+       x->x_height = DEFAULT_SCRATCHER_HEIGHT;
+       x->x_sensibility = DEFAULT_SCRATCHER_SENSIBILITY;
+       x->x_maxspeed = DEFAULT_SCRATCHER_MAX_SPEED;
+       x->x_inertia = DEFAULT_TURNTABLE_INERTIA;
+    }
+
+    x->x_play = 0;
+    x->x_record = 0;
+    x->x_readspeed = 1.;
+    x->x_readpos = 0.;
+    x->x_speedinc = 0.;
+    x->x_writepos = 0;
+    x->x_sdata = NULL;
+    x->x_empty = 1;
+    x->x_showspeed = 1;
+    x->x_mousemoved = 0;
+    x->x_lastmovetime = 0L;
+    x->x_selected = 0;
+    x->x_glist = (t_glist*)canvas_getcurrent();
+
+    // activate graphical callbacks
+    class_setwidget(scratcher_class, &scratcher_widgetbehavior);
+    
+    // post( "scratcher~ : new scratcher : size = %d", x->x_size );
+    if ( scratcher_allocate(x) <0 ) {
+      return NULL;
+    } else {
+      return(x);
+    }
+
+}
+
+void scratcher_tilde_setup(void)
+{
+    post(scratcher_version);
+#include "scratcher~.tk2c"
+    scratcher_class = class_new(gensym("scratcher~"), (t_newmethod)scratcher_new, (t_method)scratcher_free,
+                    sizeof(t_scratcher), 0, A_GIMME, 0);
+    class_sethelpsymbol( scratcher_class, gensym("help-scratcher~.pd") );
+
+    // set callbacks
+    scratcher_widgetbehavior.w_getrectfn =    scratcher_getrect;
+    scratcher_widgetbehavior.w_displacefn =   scratcher_displace;
+    scratcher_widgetbehavior.w_selectfn =     scratcher_select;
+    scratcher_widgetbehavior.w_activatefn =   NULL;
+    scratcher_widgetbehavior.w_deletefn =     scratcher_delete;
+    scratcher_widgetbehavior.w_visfn =        scratcher_vis;
+    scratcher_widgetbehavior.w_clickfn =      scratcher_click;
+    scratcher_widgetbehavior.w_propertiesfn = scratcher_properties;
+    scratcher_widgetbehavior.w_savefn =       scratcher_save;
+
+    CLASS_MAINSIGNALIN( scratcher_class, t_scratcher, x_f );
+    class_addmethod(scratcher_class, (t_method)scratcher_dsp, gensym("dsp"), A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_record, gensym("record"), A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_resize, gensym("resize"), A_FLOAT, A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_sensibility, gensym("sensibility"), A_FLOAT, A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_maxspeed, gensym("maxspeed"), A_FLOAT, A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_inertia, gensym("inertia"), A_FLOAT, A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_showspeed, gensym("showspeed"), A_FLOAT, A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_play, gensym("play"), A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_stop, gensym("stop"), A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_reset, gensym("reset"), A_NULL);
+    class_addmethod(scratcher_class, (t_method)scratcher_dialog, gensym("dialog"), A_GIMME, A_NULL);
+}
diff --git a/scratcher~/scratcher~.tk b/scratcher~/scratcher~.tk
new file mode 100644
index 0000000..bc8ad6f
--- /dev/null
+++ b/scratcher~/scratcher~.tk
@@ -0,0 +1,77 @@
+############ scratcher procedures  -- ydegoyon@free.fr        #########
+
+proc scratcher_apply {id} {
+# strip "." from the TK id to make a variable name suffix 
+     set vid [string trimleft $id .]
+# for each variable, make a local variable to hold its name...
+     set var_graph_width [concat graph_width_$vid]
+     global $var_graph_width
+     set var_graph_height [concat graph_height_$vid]
+     global $var_graph_height
+ 
+     set cmd [concat $id dialog \
+     	[eval concat $$var_graph_width] \
+     	[eval concat $$var_graph_height] \
+ 	\;]
+     #puts stderr $cmd
+     pd $cmd
+}
+ 
+proc scratcher_cancel {id} {
+     set cmd [concat $id cancel \;]
+     #puts stderr $cmd
+     pd $cmd
+}
+ 
+proc scratcher_ok {id} {
+     scratcher_apply $id
+     scratcher_cancel $id
+}
+ 
+proc pdtk_scratcher_dialog {id width height} {
+     set vid [string trimleft $id .]
+     set var_graph_width [concat graph_width_$vid]
+     global $var_graph_width
+     set var_graph_height [concat graph_height_$vid]
+     global $var_graph_height
+ 
+     set $var_graph_width $width
+     set $var_graph_height $height
+ 
+     toplevel $id
+     wm title $id {scratcher}
+     wm protocol $id WM_DELETE_WINDOW [concat scratcher_cancel $id]
+ 
+     label $id.label -text {SCRATCHER PROPERTIES}
+     pack $id.label -side top
+ 
+     frame $id.buttonframe
+     pack $id.buttonframe -side bottom -fill x -pady 2m
+     button $id.buttonframe.cancel -text {Cancel}\
+     	-command "scratcher_cancel $id"
+     button $id.buttonframe.apply -text {Apply}\
+     	-command "scratcher_apply $id"
+     button $id.buttonframe.ok -text {OK}\
+     	-command "scratcher_ok $id"
+     pack $id.buttonframe.cancel -side left -expand 1
+     pack $id.buttonframe.apply -side left -expand 1
+     pack $id.buttonframe.ok -side left -expand 1
+     
+     frame $id.1rangef
+     pack $id.1rangef -side top
+     label $id.1rangef.lwidth -text "Width :"
+     entry $id.1rangef.width -textvariable $var_graph_width -width 7
+     pack $id.1rangef.lwidth $id.1rangef.width -side left
+ 
+     frame $id.2rangef
+     pack $id.2rangef -side top
+     label $id.2rangef.lheight -text "Height :"
+     entry $id.2rangef.height -textvariable $var_graph_height -width 7
+     pack $id.2rangef.lheight $id.2rangef.height -side left
+ 
+     bind $id.1rangef.name <KeyPress-Return> [concat scratcher_ok $id]
+     bind $id.2rangef.height <KeyPress-Return> [concat scratcher_ok $id]
+     focus $id.1rangef.name
+}
+
+############ scratcher procedures END -- ydegoyon@free.fr     #########