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-rw-r--r--src/options.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/options.c b/src/options.c
index f367daf..4dc542f 100644
--- a/src/options.c
+++ b/src/options.c
@@ -58,11 +58,14 @@ static void usage(const char *argv0, int verbose)
printf("\n");
printf("\tv4l2 = pad '[' v4l2-properties ']' ;\n");
printf("\tv4l2-properties = v4l2-property { ',' v4l2-property } ;\n");
- printf("\tv4l2-property = v4l2-mbusfmt | v4l2-crop | v4l2-interval ;\n");
+ printf("\tv4l2-property = v4l2-mbusfmt | v4l2-crop | v4l2-interval\n");
+ printf("\t | v4l2-compose | v4l2-interval ;\n");
printf("\tv4l2-mbusfmt = 'fmt:' fcc '/' size ;\n");
- printf("\tv4l2-crop = 'crop:' '(' left ',' top ')' '/' size ;\n");
+ printf("\tv4l2-crop = 'crop:' rectangle ;\n");
+ printf("\tv4l2-compose = 'compose:' rectangle ;\n");
printf("\tv4l2-interval = '@' numerator '/' denominator ;\n");
printf("\n");
+ printf("\trectangle = '(' left ',' top, ')' '/' size ;\n");
printf("\tsize = width 'x' height ;\n");
printf("\n");
printf("where the fields are\n");