From ffda756fdea19683cf00f85a0fa79f543e4d5a6e Mon Sep 17 00:00:00 2001
From: tonton th <sigfood@dinorama.fr>
Date: Fri, 15 Jan 2021 13:44:54 +0100
Subject: [PATCH] tracking a non existant bug

---
 v4l2/grabvidseq.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/v4l2/grabvidseq.c b/v4l2/grabvidseq.c
index 024af53e..ef855ae4 100644
--- a/v4l2/grabvidseq.c
+++ b/v4l2/grabvidseq.c
@@ -106,8 +106,9 @@ char                            *dev_name = "/dev/video0";
 struct buffer                   *buffers;
 
 int		foo;
-double		period = 10.0;			/* delai entre les captures */
-int		nbre_capt = 1;			/* nombre de captures */
+double		period = 10.0;		/* delai entre les captures
+					   en secondes */
+int		nbre_capt = 1;		/* nombre de captures */
 int		opt;
 int		width = 640;
 int		height = 480;
@@ -144,7 +145,6 @@ while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:r:s:uv")) != -1) {
 						optarg);
 					exit(1);
 					}
-				period *= 1e6;
 				break;
 		case 'r':	rotfactor = atoi(optarg);	break;
 		case 's':	parse_WxH(optarg, &width, &height);
@@ -162,7 +162,7 @@ if (verbosity > 1) {
 	fprintf(stderr, "*** GrabVidSeq (%s, %s) libv %d, pid=%d\n",
 				__DATE__, __TIME__, FIMG_VERSION, getpid());
 	fprintf(stderr, "grabing %d picz, ", nbre_capt);
-	fprintf(stderr, "period is %.3f milliseconds\n", period/1e3);
+	fprintf(stderr, "period is %.3f seconds\n", period);
 	fprintf(stderr, "framesize is %dx%d\n", width, height);
 	// fprintf(stderr, "destdir is '%s'\n", dest_dir);
 	if (upscaling) fprintf(stderr, "upscaling is on\n");
@@ -277,7 +277,7 @@ for (i = 0; i < nbre_capt; i++) {
 		}
 
 	if(verbosity > 1) {
-		fprintf(stderr, "%6d / %6d      %9.3f\n", i, nbre_capt,
+		fprintf(stderr, "%6d / %6d      %9.3f\r", i, nbre_capt,
 						fimg_timer_get(0));
 		fflush(stderr);
 		}
@@ -309,15 +309,15 @@ for (i = 0; i < nbre_capt; i++) {
 			out_name);
 #endif
 
-	if (nbre_capt > 1 && period > 1.0) {
-		usleep(period);
+	if (nbre_capt > 1 && period > 0.001) {
+		/* suspend execution for
+		   microsecond intervals */
+		usleep((int)(period*1E6));
 		}
 
 	xioctl(fd, VIDIOC_QBUF, &buf);
 	}
 
-fflush(stdout);
-
 if (verbosity) {
 	t_final = fimg_timer_get(0);
 	fprintf(stderr, "pid %d : elapsed %.3g s -> %.2f fps\n", getpid(),
@@ -398,8 +398,6 @@ switch (foo) {
 	}
 	// free buffers
 
-
-
 fimg_destroy(&cumul);
 #endif