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-rw-r--r--modules/pdp_xcanvas.c539
1 files changed, 539 insertions, 0 deletions
diff --git a/modules/pdp_xcanvas.c b/modules/pdp_xcanvas.c
new file mode 100644
index 0000000..77bf7d5
--- /dev/null
+++ b/modules/pdp_xcanvas.c
@@ -0,0 +1,539 @@
+/*
+ * PiDiP module.
+ * Copyright (c) by 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.
+ *
+ * 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.
+ *
+ */
+
+/* This object is an object allowing juxtaposition of frames from two inlets
+ * Written by Yves Degoyon
+ */
+
+
+
+#include "pdp.h"
+#include "pdp_xwindow.h"
+#include <math.h>
+
+static char *pdp_xcanvas_version = "pdp_xcanvas: version 0.1, display for several video sources, written by Yves Degoyon (ydegoyon@free.fr)";
+
+#define MAX_CANVAS_INPUT 10
+#define PDP_XCANVAS_AUTOCREATE_RETRY 10
+
+typedef struct pdp_xcanvas_struct
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_int x_dropped;
+ t_int x_queue_id;
+
+ t_int x_opacket;
+
+ t_int x_current;
+ t_float x_xmouse;
+ t_float x_ymouse;
+
+ t_int *x_packets;
+ t_int *x_widths;
+ t_int *x_heights;
+ t_float *x_xoffsets;
+ t_float *x_yoffsets;
+ t_int *x_sizes;
+
+ t_int x_owidth;
+ t_int x_oheight;
+ t_int x_osize;
+ t_int x_nbinputs;
+
+ // X data
+ t_outlet *x_events;
+ t_pdp_xwindow x_xwin;
+ t_pdp_xvideo x_xvid;
+ Display *x_dpy;
+ t_symbol *x_display;
+ int x_initialized;
+
+} t_pdp_xcanvas;
+
+static Bool pdp_xcanvas_shm_completion_event(Display *dpy, XEvent *ev, XPointer arg)
+{
+ if(ev->type == XShmGetEventBase(dpy) + ShmCompletion ) {
+ return True;
+ } else {
+ return False;
+ }
+}
+
+static void pdp_canvas_create(t_pdp_xcanvas* x)
+{
+ int i;
+ if(x->x_initialized) return;
+
+ post("pdp_xcanvas: pdp_canvas_create");
+
+ x->x_xwin.winwidth = x->x_owidth;
+ x->x_xwin.winheight = x->x_oheight;
+ x->x_xvid.width = x->x_owidth;
+ x->x_xvid.height = x->x_oheight;
+
+ /* manually open a display */
+ if (NULL == (x->x_dpy = XOpenDisplay(x->x_display->s_name))){
+ post("pdp_xv: cant open display %s\n",x->x_display->s_name);
+ x->x_initialized = false;
+ return;
+ }
+
+ post("pdp_xcanvas: pdp_xvideo_create_on_display");
+
+ /* create a window on the display */
+ if (!(x->x_initialized = pdp_xwindow_create_on_display(&x->x_xwin, x->x_dpy))) goto exit_close_win;
+
+ post("pdp_xcanvas: pdp_xvideo_open_on_display");
+
+ /* open an xv port on the display */
+ if (!(x->x_initialized = pdp_xvideo_open_on_display(&x->x_xvid, x->x_dpy))) goto exit_close_dpy;
+
+ x->x_xwin.initialized = True;
+
+ /* done */
+ return;
+
+ /* cleanup exits */
+ exit_close_win:
+ pdp_xwindow_close(&x->x_xwin); // cose window
+ exit_close_dpy:
+ XCloseDisplay(x->x_dpy); // close display
+ x->x_dpy = 0;
+}
+
+static void pdp_xcanvas_destroy(t_pdp_xcanvas* x)
+{
+ if (x->x_initialized){
+ pdp_xvideo_close(&x->x_xvid); // close xvideo connection
+ pdp_xwindow_close(&x->x_xwin); // close the window
+ XCloseDisplay(x->x_dpy); // close the display connection
+ x->x_dpy = 0;
+ x->x_initialized = 0;
+ }
+}
+
+static void pdp_xcanvas_cursor(t_pdp_xcanvas *x, t_floatarg f)
+{
+ pdp_xwindow_cursor(&x->x_xwin, f);
+}
+
+static void pdp_xcanvas_process_yv12(t_pdp_xcanvas *x)
+{
+ t_int px, py, ppx, ppy, ii, nbs;
+ char *pY, *pU, *pV;
+ char *ppY, *ppU, *ppV;
+ t_pdp *oheader;
+ char *odata, *pdata;
+ t_pdp *iheader;
+ t_int mx, dx, my, dy;
+
+ if ( !x->x_initialized )
+ {
+ pdp_canvas_create( x ) ;
+ }
+
+ pY = (char *)x->x_xvid.xshmimage->data;
+ pV = (char *)(x->x_xvid.xshmimage->data+x->x_osize);
+ pU = (char *)(x->x_xvid.xshmimage->data+x->x_osize+(x->x_osize>>2));
+
+ // paint it black
+ for ( py=0; py<x->x_oheight; py++)
+ {
+ memset( pY+(py*x->x_owidth), 0, x->x_owidth );
+ memset( pU+((py>>1)*(x->x_owidth>>1)), -128, (x->x_owidth>>1) );
+ memset( pV+((py>>1)*(x->x_owidth>>1)), -128, (x->x_owidth>>1) );
+ }
+
+ for ( ii=0; ii<x->x_nbinputs; ii++)
+ {
+ if ( x->x_packets[ii] != -1 )
+ {
+ if ( x->x_xoffsets[ii] < -x->x_widths[ii] ) continue;
+ if ( x->x_xoffsets[ii] > x->x_owidth ) continue;
+ if ( x->x_yoffsets[ii] < -x->x_heights[ii] ) continue;
+ if ( x->x_yoffsets[ii] > x->x_oheight ) continue;
+
+ pdata = (char *)pdp_packet_data(x->x_packets[ii]);
+ ppY = pdata;
+ ppV = pdata+x->x_sizes[ii];
+ ppU = pdata+x->x_sizes[ii]+(x->x_sizes[ii]>>2);
+
+ if ( x->x_xoffsets[ii] < 0 )
+ {
+ mx = -x->x_xoffsets[ii];
+ dx = x->x_widths[ii]+x->x_xoffsets[ii];
+ }
+ else if ( x->x_xoffsets[ii] > x->x_owidth - x->x_widths[ii] )
+ {
+ mx = 0;
+ dx = x->x_owidth-x->x_xoffsets[ii];
+ }
+ else
+ {
+ mx = 0;
+ dx = x->x_widths[ii];
+ }
+
+ if ( x->x_yoffsets[ii] < 0 )
+ {
+ my = -x->x_yoffsets[ii];
+ dy = x->x_heights[ii]+x->x_yoffsets[ii]-1;
+ }
+ else if ( x->x_yoffsets[ii] > x->x_oheight - x->x_heights[ii] )
+ {
+ my = 0;
+ dy = x->x_oheight-x->x_yoffsets[ii]-1;
+ }
+ else
+ {
+ my = 0;
+ dy = x->x_heights[ii]-1;
+ }
+
+ for ( py=x->x_yoffsets[ii]+my; py<x->x_yoffsets[ii]+dy; py++)
+ {
+ memcpy( pY+(py*x->x_owidth)+(t_int)x->x_xoffsets[ii]+mx,
+ ppY+(py-(t_int)x->x_yoffsets[ii])*x->x_widths[ii]+mx, dx );
+ memcpy( pU+((py>>1)*(x->x_owidth>>1))+((t_int)(x->x_xoffsets[ii]+mx)>>1),
+ ppU+((py-(t_int)x->x_yoffsets[ii])>>1)*(x->x_widths[ii]>>1)+(mx>>1), (dx>>1) );
+ memcpy( pV+((py>>1)*(x->x_owidth>>1))+((t_int)(x->x_xoffsets[ii]+mx)>>1),
+ ppV+((py-(t_int)x->x_yoffsets[ii])>>1)*(x->x_widths[ii]>>1)+(mx>>1), (dx>>1) );
+ }
+ }
+ }
+ return;
+}
+
+static void pdp_xcanvas_display_packet(t_pdp_xcanvas *x)
+{
+ XEvent xevent;
+
+ /* receive events & output them */
+ pdp_xwindow_send_events(&x->x_xwin, x->x_events);
+
+ /* display */
+ XvShmPutImage(x->x_xvid.dpy, x->x_xvid.xv_port, x->x_xwin.win, x->x_xwin.gc, x->x_xvid.xshmimage,
+ 0, 0, x->x_xvid.width, x->x_xvid.height, 0, 0,
+ x->x_xwin.winwidth, x->x_xwin.winheight, True);
+ XIfEvent(x->x_xvid.dpy, &xevent, pdp_xcanvas_shm_completion_event, NULL);
+ XFlush(x->x_xvid.dpy);
+}
+
+static void pdp_xcanvas_process(t_pdp_xcanvas *x, t_int ni)
+{
+ int encoding;
+ t_pdp *header = 0;
+
+ /* check if image data packets are compatible */
+ if ( (header = pdp_packet_header(x->x_packets[ni]))
+ && (PDP_BITMAP == header->type)){
+
+ /* pdp_xcanvas_process inputs and write into active inlet */
+ switch(pdp_packet_header(x->x_packets[ni])->info.image.encoding){
+
+ case PDP_BITMAP_YV12:
+ pdp_queue_add(x, pdp_xcanvas_process_yv12, pdp_xcanvas_display_packet, &x->x_queue_id);
+ break;
+
+ default:
+ post( "pdp_xcanvas : unknow image type : %d",
+ pdp_packet_header(x->x_packets[ni])->info.image.encoding );
+ break;
+
+ }
+ }
+}
+
+static void pdp_xcanvas_offset(t_pdp_xcanvas *x, t_floatarg ni, t_floatarg xoffset, t_floatarg yoffset)
+{
+ if ( ( ni < 1 ) || ( ni > x->x_nbinputs ) )
+ {
+ post( "pdp_xcanvas : offset : wrong source : %d : must be between 1 and %d", ni, x->x_nbinputs );
+ return;
+ }
+ x->x_xoffsets[(int)ni-1] = xoffset;
+ x->x_yoffsets[(int)ni-1] = yoffset;
+}
+
+static void pdp_xcanvas_select(t_pdp_xcanvas *x, t_floatarg X, t_floatarg Y)
+{
+ t_int ii;
+
+ x->x_current = -1;
+ X = X*x->x_owidth;
+ Y = Y*x->x_oheight;
+ // post( "pdp_xcanvas : select %f %f", X, Y );
+ for ( ii=0; ii<x->x_nbinputs; ii++)
+ {
+ if ( x->x_packets[ii] != -1 )
+ {
+ if ( (X >= x->x_xoffsets[ii]) && ( X < x->x_xoffsets[ii] + x->x_widths[ii] )
+ && (Y >= x->x_yoffsets[ii]) && ( Y < x->x_yoffsets[ii] + x->x_heights[ii] )
+ )
+ {
+ x->x_current = ii;
+ x->x_xmouse = X;
+ x->x_ymouse = Y;
+ }
+ }
+ }
+}
+
+static void pdp_xcanvas_drag(t_pdp_xcanvas *x, t_floatarg X, t_floatarg Y)
+{
+ X = X*x->x_owidth;
+ Y = Y*x->x_oheight;
+ // post( "pdp_xcanvas : drag %f %f", X, Y );
+ if ( x->x_current != -1 )
+ {
+ x->x_xoffsets[ x->x_current ] += (X-x->x_xmouse);
+ x->x_yoffsets[ x->x_current ] += (Y-x->x_ymouse);
+ x->x_xmouse = X;
+ x->x_ymouse = Y;
+ }
+}
+
+static void pdp_xcanvas_unselect(t_pdp_xcanvas *x)
+{
+ x->x_current = -1;
+}
+
+static void pdp_xcanvas_input(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f, t_int ni)
+{
+ t_pdp *header;
+ short int *data;
+
+ /* if this is a register_ro message or register_rw message, register with packet factory */
+
+ if (s== gensym("register_rw"))
+ {
+ /* release the packet */
+ if ( x->x_packets[ni] != -1 )
+ {
+ pdp_packet_mark_unused(x->x_packets[ni]);
+ x->x_packets[ni] = -1;
+ }
+ x->x_dropped = pdp_packet_convert_ro_or_drop(&x->x_packets[ni], (int)f, pdp_gensym("bitmap/yv12/*") );
+ if ( x->x_packets[ni] != -1 )
+ {
+ header = pdp_packet_header(x->x_packets[ni]);
+ x->x_widths[ni] = header->info.image.width;
+ x->x_heights[ni] = header->info.image.height;
+ x->x_sizes[ni] = x->x_widths[ni]*x->x_heights[ni];
+ }
+ }
+
+ if ((s == gensym("process")) && (-1 != x->x_packets[ni]) && (!x->x_dropped))
+ {
+ /* add the process method and callback to the process queue */
+ pdp_xcanvas_process(x, ni);
+ }
+}
+
+static void pdp_xcanvas_input0(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 0);
+}
+
+static void pdp_xcanvas_input1(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 1);
+}
+
+static void pdp_xcanvas_input2(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 2);
+}
+
+static void pdp_xcanvas_input3(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 3);
+}
+
+static void pdp_xcanvas_input4(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 4);
+}
+
+static void pdp_xcanvas_input5(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 5);
+}
+
+static void pdp_xcanvas_input6(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 6);
+}
+
+static void pdp_xcanvas_input7(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 7);
+}
+
+static void pdp_xcanvas_input8(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 8);
+}
+
+static void pdp_xcanvas_input9(t_pdp_xcanvas *x, t_symbol *s, t_floatarg f)
+{
+ pdp_xcanvas_input(x, s, f, 9);
+}
+
+static void pdp_xcanvas_free(t_pdp_xcanvas *x)
+{
+ t_int ii;
+
+ pdp_queue_finish(x->x_queue_id);
+ for ( ii=0; ii<x->x_nbinputs; ii++)
+ {
+ pdp_packet_mark_unused(x->x_packets[ii]);
+ }
+ pdp_packet_mark_unused(x->x_opacket);
+ if ( x->x_packets ) freebytes( x->x_packets, x->x_nbinputs*sizeof(t_int) );
+ if ( x->x_widths ) freebytes( x->x_widths, x->x_nbinputs*sizeof(t_int) );
+ if ( x->x_heights ) freebytes( x->x_heights, x->x_nbinputs*sizeof(t_int) );
+ if ( x->x_sizes ) freebytes( x->x_sizes, x->x_nbinputs*sizeof(t_int) );
+ if ( x->x_xoffsets ) freebytes( x->x_xoffsets, x->x_nbinputs*sizeof(t_float) );
+ if ( x->x_yoffsets ) freebytes( x->x_yoffsets, x->x_nbinputs*sizeof(t_float) );
+ pdp_xcanvas_destroy(x);
+ pdp_xvideo_free(&x->x_xvid);
+ pdp_xwindow_free(&x->x_xwin);
+}
+
+t_class *pdp_xcanvas_class;
+
+void *pdp_xcanvas_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_pdp_xcanvas *x = (t_pdp_xcanvas *)pd_new(pdp_xcanvas_class);
+ t_int ii;
+ char *imes[32];
+
+ if ( argc != 3 )
+ {
+ post( "pdp_xcanvas : wrong constructor : pdp_xcanvas <width> <height> <nb inputs> (argc=%d)", argc);
+ return NULL;
+ }
+ if ( argv[0].a_type != A_FLOAT || argv[1].a_type != A_FLOAT ||
+ argv[2].a_type != A_FLOAT )
+ {
+ post( "pdp_xcanvas : wrong constructor : pdp_xcanvas <width> <height> <nb inputs>");
+ return NULL;
+ }
+
+ x->x_events = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_owidth = ( (int) argv[0].a_w.w_float / 8 ) * 8; // round to a multiple of 8
+ x->x_oheight = ( (int) argv[1].a_w.w_float / 8 ) * 8; // round to a multiple of 8
+ x->x_osize = x->x_owidth*x->x_oheight;
+ x->x_nbinputs = (int) argv[2].a_w.w_float;
+
+ if ( x->x_owidth < 0 )
+ {
+ post( "pdp_xcanvas : wrong width : %d", x->x_owidth);
+ return NULL;
+ }
+ if ( x->x_oheight < 0 )
+ {
+ post( "pdp_xcanvas : wrong height : %d", x->x_oheight);
+ return NULL;
+ }
+ if ( x->x_nbinputs < 0 )
+ {
+ post( "pdp_xcanvas : wrong number of inputs : %d", x->x_nbinputs);
+ return NULL;
+ }
+ if ( x->x_nbinputs > MAX_CANVAS_INPUT )
+ {
+ post( "pdp_xcanvas : number of inputs is too high : %d : only %d supported",
+ x->x_nbinputs, MAX_CANVAS_INPUT);
+ return NULL;
+ }
+
+ post ( "pdp_xcanvas : new %dx%d canvas with %d inputs", x->x_owidth, x->x_oheight, x->x_nbinputs );
+
+ x->x_packets = ( t_int* ) getbytes( x->x_nbinputs*sizeof(t_int) );
+ x->x_widths = ( t_int* ) getbytes( x->x_nbinputs*sizeof(t_int) );
+ x->x_heights = ( t_int* ) getbytes( x->x_nbinputs*sizeof(t_int) );
+ x->x_sizes = ( t_int* ) getbytes( x->x_nbinputs*sizeof(t_int) );
+ x->x_xoffsets = ( t_float* ) getbytes( x->x_nbinputs*sizeof(t_float) );
+ x->x_yoffsets = ( t_float* ) getbytes( x->x_nbinputs*sizeof(t_float) );
+
+ x->x_opacket = pdp_packet_new_image_YCrCb( x->x_owidth, x->x_oheight );
+
+ for ( ii=0; ii<x->x_nbinputs; ii++)
+ {
+ sprintf( (char*)imes, "pdp%d", ii );
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("pdp"), gensym((char*)imes) );
+ x->x_packets[ii] = -1;
+ x->x_xoffsets[ii] = 0.;
+ x->x_yoffsets[ii] = 0.;
+ }
+ x->x_current = -1;
+
+ pdp_xwindow_init(&x->x_xwin);
+ pdp_xvideo_init(&x->x_xvid);
+
+ x->x_display = gensym(":0");
+ x->x_dpy = 0;
+ x->x_initialized = 0;
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_xcanvas_setup(void)
+{
+ char *imes[32];
+
+ // post( pdp_xcanvas_version );
+ pdp_xcanvas_class = class_new(gensym("pdp_xcanvas"), (t_newmethod)pdp_xcanvas_new,
+ (t_method)pdp_xcanvas_free, sizeof(t_pdp_xcanvas), 0, A_GIMME, A_NULL);
+ class_sethelpsymbol( pdp_xcanvas_class, gensym("pdp_xcanvas.pd") );
+
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input0, gensym("pdp0"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input1, gensym("pdp1"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input2, gensym("pdp2"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input3, gensym("pdp3"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input4, gensym("pdp4"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input5, gensym("pdp5"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input6, gensym("pdp6"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input7, gensym("pdp7"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input8, gensym("pdp8"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_input9, gensym("pdp9"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_offset, gensym("offset"), A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_select, gensym("select"), A_DEFFLOAT, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_drag, gensym("drag"), A_DEFFLOAT, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_unselect, gensym("unselect"), A_NULL);
+ class_addmethod(pdp_xcanvas_class, (t_method)pdp_xcanvas_cursor, gensym("cursor"), A_FLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif