ajout d'un chronometre

v4l2/Makefile

@@ -16,6 +16,6 @@ capture: capture.c Makefile
 	gcc -Wall -g $<       -o $@
 
 grabvidseq: grabvidseq.c Makefile
-	gcc -Wall -g $< -lv4l2 -o $@
+	gcc -Wall -g $< ../libfloatimg.a -lv4l2 -o $@
 
 

v4l2/grabvidseq.c

@@ -26,6 +26,8 @@
 #include <linux/videodev2.h>
 #include <libv4l2.h>
 
+#include "../floatimg.h"
+
 #define CLEAR(x) memset(&(x), 0, sizeof(x))
 
 struct buffer {
@@ -80,6 +82,7 @@ struct buffer                   *buffers;
 int		period = 10;		/* delai entre les captures */
 int		nbre_capt = 1;		/* nombre de captures */
 int		opt;
+double		t_debut, t_final;
 
 while ((opt = getopt(argc, argv, "d:hn:p:v")) != -1) {
 	switch(opt) {
@@ -142,6 +145,7 @@ for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
 		}
 	}
 
+t_debut = fimg_timer_set(0);
 for (i = 0; i < n_buffers; ++i) {
 	CLEAR(buf);
 	buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
@@ -194,6 +198,9 @@ for (i = 0; i < nbre_capt; i++) {
 	xioctl(fd, VIDIOC_QBUF, &buf);
 }
 
+t_final = fimg_timer_get(0);
+fprintf(stderr, "elapsed time %g s.\n", t_final);
+
 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 xioctl(fd, VIDIOC_STREAMOFF, &type);
 for (i = 0; i < n_buffers; ++i) {