pdp docs

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+#N canvas 238 181 882 542 10;
+#X obj 107 427 pdp_v4l;
+#X obj 107 53 metro 40;
+#X msg 159 14 stop;
+#X msg 107 14 bang;
+#X msg 51 14 bang;
+#X msg 209 93 open /dev/video0;
+#X msg 209 117 open /dev/video1;
+#X text 347 95 you can choose the input device using the 'open' message.
+the default is /dev/video0;
+#X msg 209 142 close;
+#X text 348 143 closes the video port;
+#X msg 209 168 type yv12;
+#X msg 209 192 type grey;
+#X text 348 171 type sets the ouput image package type. currently only
+yv12 (luma/chroma color) and greyscale are supported.;
+#X msg 210 221 dim 320 240;
+#X msg 210 244 dim 640 480;
+#X text 348 215 dim sets the dimensions of the captured frame. please
+note that in all objects dimensions and packet type (color/greyscale)
+have to be the same to be combined (i.e. mixed);
+#X text 207 18 pdp_v4l grabs video from the video4linux device. it
+grabs a frame whenever a bang message is received. the output rate
+is limited by the maximum framerate of the video device. if there is
+no device opened \, it will attempt to open /dev/video0;
+#X msg 210 319 channel \$1;
+#X floatatom 210 295 5 0 0;
+#X text 347 320 sets the v4l channel (like tuner \, composite \, svideo
+\, ...);
+#X floatatom 210 359 5 0 0;
+#X msg 210 383 freq \$1;
+#X floatatom 271 359 5 0 0;
+#X msg 271 383 freqMHz \$1;
+#X text 346 359 sets the v4l tuner frequency (in v4l units and MHz)
+;
+#X obj 107 480 pdp_help_output;
+#X connect 0 0 25 0;
+#X connect 1 0 0 0;
+#X connect 2 0 1 0;
+#X connect 3 0 1 0;
+#X connect 4 0 0 0;
+#X connect 5 0 0 0;
+#X connect 6 0 0 0;
+#X connect 8 0 0 0;
+#X connect 10 0 0 0;
+#X connect 11 0 0 0;
+#X connect 13 0 0 0;
+#X connect 14 0 0 0;
+#X connect 17 0 0 0;
+#X connect 18 0 17 0;
+#X connect 20 0 21 0;
+#X connect 21 0 0 0;
+#X connect 22 0 23 0;
+#X connect 23 0 0 0;