picoproj: remove an unneeded blank line

[libam7xxx.git] / examples / picoproj.c

diff --git a/examples/picoproj.c b/examples/picoproj.c
index 54cbedf..92dbfbf 100644 (file)
--- a/examples/picoproj.c
+++ b/examples/picoproj.c
@@ -35,6 +35,7 @@ static void usage(char *name)
 {
        printf("usage: %s [OPTIONS]\n\n", name);
        printf("OPTIONS:\n");
+       printf("\t-d <index>\t\tthe device index (default is 0)\n");
        printf("\t-f <filename>\t\tthe image file to upload\n");
        printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
        printf("\t\t\t\tSUPPORTED FORMATS:\n");
@@ -66,6 +67,7 @@ int main(int argc, char *argv[])
        am7xxx_context *ctx;
        am7xxx_device *dev;
        int log_level = AM7XXX_LOG_INFO;
+       int device_index = 0;
        am7xxx_power_mode power_mode = AM7XXX_POWER_LOW;
        am7xxx_zoom_mode zoom = AM7XXX_ZOOM_ORIGINAL;
        int format = AM7XXX_IMAGE_FORMAT_JPEG;
@@ -75,8 +77,15 @@ int main(int argc, char *argv[])
        unsigned int size;
        am7xxx_device_info device_info;
 
-       while ((opt = getopt(argc, argv, "f:F:l:p:z:W:H:h")) != -1) {
+       while ((opt = getopt(argc, argv, "d:f:F:l:p:z:W:H:h")) != -1) {
                switch (opt) {
+               case 'd':
+                       device_index = atoi(optarg);
+                       if (device_index < 0) {
+                               fprintf(stderr, "Unsupported device index\n");
+                               exit(EXIT_FAILURE);
+                       }
+                       break;
                case 'f':
                        if (filename[0] != '\0')
                                fprintf(stderr, "Warning: image file already specified\n");
@@ -159,7 +168,8 @@ int main(int argc, char *argv[])
        }
 
        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;
        }
@@ -212,7 +222,6 @@ int main(int argc, char *argv[])
                goto cleanup;
        }
 
-
        ret = am7xxx_close_device(dev);
        if (ret < 0) {
                perror("am7xxx_close_device");
@@ -220,7 +229,7 @@ int main(int argc, char *argv[])
                goto cleanup;
        }
 
-       ret = am7xxx_open_device(ctx, &dev, 0);
+       ret = am7xxx_open_device(ctx, &dev, device_index);
        if (ret < 0) {
                perror("am7xxx_open_device");
                exit_code = EXIT_FAILURE;
@@ -251,13 +260,16 @@ int main(int argc, char *argv[])
        }
 
        /* 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;
-
+       }
 
        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) {