diff --git a/Fonderie/single.c b/Fonderie/single.c
index 905f1f4..cbb6e12 100644
--- a/Fonderie/single.c
+++ b/Fonderie/single.c
@@ -10,6 +10,7 @@
 #include   <string.h>
 #include   <sys/stat.h>
 #include   <stdint.h>
+#include  <sys/time.h>
 
 #include   "../floatimg.h"
 
diff --git a/floatimg.h b/floatimg.h
index 91ba78d..924c415 100644
--- a/floatimg.h
+++ b/floatimg.h
@@ -4,7 +4,7 @@
  *	http://la.buvette.org/photos/cumul
  */
 
-#define		FIMG_VERSION	171
+#define		FIMG_VERSION	174
 
 /*
  *	in memory descriptor
@@ -28,6 +28,16 @@ typedef struct {
 	char		magic[8];
 	int32_t		w, h, t;
 	} FimgFileHead;
+/*
+ *		new 11 mars 2022
+ */
+typedef struct {
+	char		magic[8];
+	struct timeval	timestamp;
+	int32_t		count;
+	float		fval;
+	char		idcam[32];
+	} FimgMetaData;
 /*
  *	we MUST look at packing and endianess problems NOW */
 
@@ -207,11 +217,14 @@ int fimg_displacement_0(FloatImg *psrc, FloatImg *pdst, int flags);
 int fimg_hdeg_a(FloatImg *img, double dcoef);
 int fimg_vdeg_a(FloatImg *img, double dcoef);
 
-/*	FIMG files module		*/
+/*	FIMG native file module		*/
 int   fimg_fileinfos(char *fname, int *datas);
 int   fimg_dump_to_file(FloatImg *head, char *fname, int notused);
 int   fimg_load_from_dump(char *fname, FloatImg *where);
 int   fimg_create_from_dump(char *fname, FloatImg *head);
+/*	FIMG metadata module		*/
+int fimg_show_metadata(FimgMetaData *pmd, char *title, int notused);
+int fimg_default_metadata(FimgMetaData *pmd);
 
 int fimg_save_R_as_fits(FloatImg *src, char *outname, int flags);
 int fimg_save_G_as_fits(FloatImg *src, char *outname, int flags);
diff --git a/funcs/decomprgb.c b/funcs/decomprgb.c
index 483fb86..7ceaa77 100644
--- a/funcs/decomprgb.c
+++ b/funcs/decomprgb.c
@@ -4,6 +4,7 @@
 
 #include  <stdio.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/equalize.c b/funcs/equalize.c
index d95afa1..fe2e07f 100644
--- a/funcs/equalize.c
+++ b/funcs/equalize.c
@@ -7,6 +7,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/fimg-dicom.c b/funcs/fimg-dicom.c
index 6afa07f..c6f77d7 100644
--- a/funcs/fimg-dicom.c
+++ b/funcs/fimg-dicom.c
@@ -7,6 +7,7 @@
 
 #include  <stdio.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/fimg-fits.c b/funcs/fimg-fits.c
index 9e78f91..33f2697 100644
--- a/funcs/fimg-fits.c
+++ b/funcs/fimg-fits.c
@@ -9,6 +9,7 @@
 #include  <stdio.h>
 #include  <stdlib.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  <fitsio.h>
 
diff --git a/funcs/plasmas.c b/funcs/plasmas.c
index 6c9aed1..591865b 100644
--- a/funcs/plasmas.c
+++ b/funcs/plasmas.c
@@ -8,6 +8,7 @@
 #include  <stdio.h>
 #include  <math.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include "../floatimg.h"
 
diff --git a/funcs/rampes.c b/funcs/rampes.c
index 42f196e..c6a76b2 100644
--- a/funcs/rampes.c
+++ b/funcs/rampes.c
@@ -5,6 +5,7 @@
 
 #include  <stdio.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/recurse.c b/funcs/recurse.c
index 90b3fde..e2d080d 100644
--- a/funcs/recurse.c
+++ b/funcs/recurse.c
@@ -6,6 +6,7 @@
 #include   <stdio.h>
 #include   <math.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include   "../floatimg.h"
 
diff --git a/funcs/rotate.c b/funcs/rotate.c
index 2ca1477..9fbdd94 100644
--- a/funcs/rotate.c
+++ b/funcs/rotate.c
@@ -7,6 +7,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/saturation.c b/funcs/saturation.c
index 8cd9d5c..fc31264 100644
--- a/funcs/saturation.c
+++ b/funcs/saturation.c
@@ -4,6 +4,7 @@
 
 #include  <stdio.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/sfx0.c b/funcs/sfx0.c
index 1de4c65..fa2fce1 100644
--- a/funcs/sfx0.c
+++ b/funcs/sfx0.c
@@ -6,6 +6,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/sfx1.c b/funcs/sfx1.c
index 1430668..0ef9945 100644
--- a/funcs/sfx1.c
+++ b/funcs/sfx1.c
@@ -7,6 +7,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/sfx2.c b/funcs/sfx2.c
index 3ca589c..888c08f 100644
--- a/funcs/sfx2.c
+++ b/funcs/sfx2.c
@@ -6,6 +6,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/sfx3.c b/funcs/sfx3.c
index f694416..4442a6b 100644
--- a/funcs/sfx3.c
+++ b/funcs/sfx3.c
@@ -10,6 +10,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/funcs/sfx4.c b/funcs/sfx4.c
index 0643146..9c16316 100644
--- a/funcs/sfx4.c
+++ b/funcs/sfx4.c
@@ -9,6 +9,7 @@
 #include  <stdio.h>
 #include  <string.h>
 #include  <stdint.h>
+#include  <sys/time.h>
 
 #include  "../floatimg.h"
 
diff --git a/lib/Makefile b/lib/Makefile
index 7a9a06f..3ffea72 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -6,7 +6,8 @@ COPT = -Wall -Wextra -fpic -g   -no-pie -DDEBUG_LEVEL=0
 
 OBJS = fimg-core.o fimg-pnm.o fimg-file.o fimg-math.o	\
 	fimg-timers.o operators.o fimg-2gray.o		\
-	interpolate.o fimg-compare.o contrast.o
+	interpolate.o fimg-compare.o contrast.o		\
+	metadata.o
 
 DEPS = Makefile ../floatimg.h
 
@@ -35,6 +36,9 @@ fimg-2gray.o:	fimg-2gray.c $(DEPS)
 operators.o:	operators.c $(DEPS)
 	gcc $(COPT) -c $<
 
+metadata.o:	metadata.c $(DEPS)
+	gcc $(COPT) -c $<
+
 contrast.o:	contrast.c $(DEPS)
 	gcc $(COPT) -c $<
 
diff --git a/lib/fimg-file.c b/lib/fimg-file.c
index b5da57f..b6ab586 100644
--- a/lib/fimg-file.c
+++ b/lib/fimg-file.c
@@ -46,6 +46,11 @@ if (memcmp(filehead.magic, "FIMG", 4)) {
 	return -3;
 	}
 
+/* XXX preparer la gestion des metadata */
+if ('a' == filehead.magic[4]) {
+	fprintf(stderr,"****** %s have metadata\n", fname);
+	}
+
 datas[0] = filehead.w;
 datas[1] = filehead.h;
 datas[2] = filehead.t;
@@ -143,6 +148,11 @@ if (	(filehead.w != where->width) ||
 		return -17;
 		}
 
+/* XXX preparer la gestion des metadata */
+if ('a' == filehead.magic[4]) {
+	fprintf(stderr,"****** %s have metadata\n", fname);
+	}
+
 nbre = filehead.w * filehead.h;		/* number of pixels per frame */
 foo = fread(where->R, sizeof(float), nbre, fp);
 if (nbre != foo) {
diff --git a/lib/metadata.c b/lib/metadata.c
new file mode 100644
index 0000000..4d9c7c5
--- /dev/null
+++ b/lib/metadata.c
@@ -0,0 +1,42 @@
+/*
+ *              metadata.c
+ */
+
+#include  <stdio.h>
+#include  <stdlib.h>
+#include  <stdint.h>
+#include  <unistd.h>
+#include  "string.h"
+
+#include  "../floatimg.h"
+
+extern int verbosity;           /* must be declared around main() */
+
+/* ---------------------------------------------------------------- */
+int fimg_show_metadata(FimgMetaData *pmd, char *title, int notused)
+{
+
+fprintf(stderr, ">>> %s ( %p '%s' 0x%08x )\n", __func__,
+				pmd, title, notused);
+
+fprintf(stderr, "sizeof metadata     = %ld\n", sizeof(FimgMetaData));
+fprintf(stderr, "magic               = '%8s'\n", pmd->magic);
+/* TIMESTAMP HERE */
+fprintf(stderr, "counter             = %d\n", pmd->count);
+fprintf(stderr, "float value         = %.3f\n", pmd->fval);
+fprintf(stderr, "id camera           = '%s'\n", pmd->idcam);
+
+return -1;
+}
+/* ---------------------------------------------------------------- */
+int fimg_default_metadata(FimgMetaData *pmd)
+{
+
+memcpy(pmd->magic, "metadata", 8);
+pmd->count    = 0;
+pmd->fval     = 255.0;
+strcpy(pmd->idcam, "unknow");
+
+return -1;
+}
+/* ---------------------------------------------------------------- */
diff --git a/lib/t.c b/lib/t.c
index 0190060..70db717 100644
--- a/lib/t.c
+++ b/lib/t.c
@@ -14,6 +14,20 @@
 
 int		verbosity;
 
+/* ---------------------------------------------------------------- */
+int essai_metadata(char *fname)
+{
+FimgMetaData		Md;
+int			foo;
+
+fprintf(stderr, "-------- %s ( %s ) --------\n", __func__, fname);
+
+foo = fimg_default_metadata(&Md);
+
+foo = fimg_show_metadata(&Md, "from t.c", 0);
+
+return -1;
+}
 /* ---------------------------------------------------------------- */
 int essai_save_plane(int wot)
 {
@@ -300,9 +314,12 @@ if (verbosity)	{
 	fimg_print_sizeof();
 	}
 
-foo = essai_save_plane(0);
+foo = essai_metadata("foo.fimg");
 fprintf(stderr, "retour essai  -> %d\n", foo);
 
+// foo = essai_save_plane(0);
+// fprintf(stderr, "retour essai  -> %d\n", foo);
+
 // foo = essai_clone_et_copy(0);
 // fprintf(stderr, "retour essai clone'n'copy -> %d\n", foo);