refactoring the build system

tools/plot-timing.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+set -ue
+
+TMPFILE="/dev/shm/plot-timing.tmp"
+IMAGE="timing.png"
+
+echo ; figlet "plot timing" ; echo
+wc WS/mp4.timing | tee -a WS/log
+
+grep "passage" WS/mp4.timing | awk '				\
+BEGIN	{							\
+	nbrames=360;						\
+	for (foo=0; foo<nbrames; foo++) {			\
+		mini[foo]  = 666;				\
+		maxi[foo]  = -42;				\
+		count[foo] = 0;					\
+		}						\
+	}							\
+								\
+	{							\
+	accu[$2] += $3;						\
+	count[$2]++;						\
+	if (mini[$2] > $3)	mini[$2] = $3;			\
+	if (maxi[$2] < $3)	maxi[$2] = $3;			\
+	}							\
+								\
+END	{							\
+	for (foo=0; foo<nbrames; foo++) {			\
+		if (count[foo] > 0) {				\
+			mean = accu[foo] / count[foo];		\
+			printf "%4d %4f %4d %4d\n", foo, mean, 	\
+				mini[foo], maxi[foo];		\
+			}					\
+		}						\
+	}							\
+' > $TMPFILE
+
+# cat -n $TMPFILE | tail		# ; exit
+
+gnuplot	<< __EOC__
+	set term png size 1024,768
+	set output "timing.png"
+	set grid
+	set xrange [:360]
+	set yrange [0:]
+	set title "HexaCone : temps de rendu"
+	set xlabel "numéro de la trame"
+	set ylabel "temps en secondes"
+	plot "/dev/shm/plot-timing.tmp" u 1:4 w l t "maximum",	\
+	     "/dev/shm/plot-timing.tmp" u 1:3 w l t "minimum",	\
+	     "/dev/shm/plot-timing.tmp" u 1:2 w l t "moyenne",
+__EOC__
+
+convert -negate $IMAGE WS/negatif.png
+