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examples: print the usage message when a required option is missing
[libam7xxx.git]
/
examples
/
picoproj.c
diff --git
a/examples/picoproj.c
b/examples/picoproj.c
index
b13a67c
..
610e148
100644
(file)
--- a/
examples/picoproj.c
+++ b/
examples/picoproj.c
@@
-168,7
+168,8
@@
int main(int argc, char *argv[])
}
if (filename[0] == '\0') {
}
if (filename[0] == '\0') {
- fprintf(stderr, "An image file MUST be specified.\n");
+ fprintf(stderr, "An image file MUST be specified with the -f option.\n\n");
+ usage(argv[0]);
exit_code = EXIT_FAILURE;
goto out;
}
exit_code = EXIT_FAILURE;
goto out;
}
@@
-221,7
+222,6
@@
int main(int argc, char *argv[])
goto cleanup;
}
goto cleanup;
}
-
ret = am7xxx_close_device(dev);
if (ret < 0) {
perror("am7xxx_close_device");
ret = am7xxx_close_device(dev);
if (ret < 0) {
perror("am7xxx_close_device");
@@
-260,13
+260,17
@@
int main(int argc, char *argv[])
}
/* When setting AM7XXX_ZOOM_TEST don't display the actual image */
}
/* When setting AM7XXX_ZOOM_TEST don't display the actual image */
- if (zoom == AM7XXX_ZOOM_TEST)
+ if (zoom == AM7XXX_ZOOM_TEST) {
+ printf("AM7XXX_ZOOM_TEST requested, not sending actual image.\n");
goto cleanup;
goto cleanup;
+ }
if ((unsigned int)width > device_info.native_width ||
(unsigned int)height > device_info.native_height)
if ((unsigned int)width > device_info.native_width ||
(unsigned int)height > device_info.native_height)
- fprintf(stderr, "WARNING: image not fitting the native resolution, it may be displayed wrongly!\n");
+ fprintf(stderr,
+ "WARNING: image is %dx%d, not fitting the native resolution, it may be displayed wrongly!\n",
+ width, height);
ret = am7xxx_send_image(dev, format, width, height, image, size);
if (ret < 0) {
ret = am7xxx_send_image(dev, format, width, height, image, size);
if (ret < 0) {