picoproj: clarify that when AM7XXX_ZOOM_TEST is set no image gets sent

[libam7xxx.git] / examples / am7xxx-play.c

diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
index af15949..668c18c 100644 (file)
--- a/examples/am7xxx-play.c
+++ b/examples/am7xxx-play.c
@@ -581,6 +581,7 @@ 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 <input format>\tthe input device format\n");
        printf("\t-i <input path>\t\tthe input path\n");
        printf("\t-o <options>\t\ta comma separated list of input format options\n");
@@ -594,8 +595,10 @@ static void usage(char *name)
        printf("\t\t\t\t\t2 - NV12\n");
        printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
        printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
-       printf("\t-p <power level>\tpower level of device, between %x (off) and %x (maximum)\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
-       printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n\t\t\t\t\t the slave connector to be plugged in.\n");
+       printf("\t-p <power mode>\t\tthe power mode of device, between %d (off) and %d (turbo)\n",
+              AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
+       printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n");
+       printf("\t\t\t\t         the slave connector to be plugged in.\n");
        printf("\t-z <zoom mode>\t\tthe display zoom mode, between %d (original) and %d (test)\n",
               AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TEST);
        printf("\t-h \t\t\tthis help message\n");
@@ -620,14 +623,23 @@ int main(int argc, char *argv[])
        unsigned int upscale = 0;
        unsigned int quality = 95;
        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;
        am7xxx_context *ctx;
        am7xxx_device *dev;
 
-       while ((opt = getopt(argc, argv, "f:i:o:s:uF:q:l:p:z:h")) != -1) {
+       while ((opt = getopt(argc, argv, "d:f:i:o:s:uF:q:l:p:z:h")) != -1) {
                switch (opt) {
+               case 'd':
+                       device_index = atoi(optarg);
+                       if (device_index < 0) {
+                               fprintf(stderr, "Unsupported device index\n");
+                               ret = -EINVAL;
+                               goto out;
+                       }
+                       break;
                case 'f':
                        input_format_string = strdup(optarg);
                        break;
@@ -718,10 +730,11 @@ int main(int argc, char *argv[])
                        case AM7XXX_POWER_MIDDLE:
                        case AM7XXX_POWER_HIGH:
                        case AM7XXX_POWER_TURBO:
-                               fprintf(stdout, "Power mode: %x\n", power_mode);
+                               fprintf(stdout, "Power mode: %d\n", power_mode);
                                break;
                        default:
-                               fprintf(stderr, "Invalid power mode value, must be between %x and %x\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
+                               fprintf(stderr, "Invalid power mode value, must be between %d and %d\n",
+                                       AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
                                ret = -EINVAL;
                                goto out;
                        }
@@ -794,7 +807,7 @@ int main(int argc, char *argv[])
 
        am7xxx_set_log_level(ctx, log_level);
 
-       ret = am7xxx_open_device(ctx, &dev, 0);
+       ret = am7xxx_open_device(ctx, &dev, device_index);
        if (ret < 0) {
                perror("am7xxx_open_device");
                goto cleanup;