/usr/lib/pd/extra/pdp_dither.pd is in pd-pdp 1:0.12.5-1.1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | #N canvas 563 412 450 378 10;
#X obj 209 213 pdp_abs;
#X obj 209 144 pdp_noise;
#X obj 57 249 pdp_sub;
#X obj 209 172 pdp_grey;
#X obj 57 148 pdp_grey;
#X obj 57 88 inlet;
#X msg 209 114 type grey;
#X obj 57 204 pdp_contrast \$1;
#X obj 57 308 outlet;
#X obj 57 117 pdp_t p b;
#X obj 157 87 inlet;
#X obj 209 86 loadbang;
#X text 25 8 a dither effect;
#X text 26 45 returns a grey image (image/grey/*);
#X obj 57 277 pdp_sign;
#X text 26 23 right inlet is contrast;
#X connect 0 0 2 1;
#X connect 1 0 3 0;
#X connect 2 0 14 0;
#X connect 3 0 0 0;
#X connect 4 0 7 0;
#X connect 5 0 9 0;
#X connect 6 0 1 0;
#X connect 7 0 2 0;
#X connect 9 0 4 0;
#X connect 9 1 1 0;
#X connect 10 0 7 1;
#X connect 11 0 6 0;
#X connect 14 0 8 0;
|