examples: support multiple devices

Expose a '-d <index>' option to set the device index, this way multiple
devices can be used.

Tested-by: Konstantin Lohmann <konstl@konstl.com>

diff --git a/doc/man/am7xxx-play.1.txt b/doc/man/am7xxx-play.1.txt
index 098e556..eabdb9c 100644 (file)
--- a/doc/man/am7xxx-play.1.txt
+++ b/doc/man/am7xxx-play.1.txt
@@ -21,6 +21,10 @@ decode the input, encode it to jpeg and display it with libam7xxx.
 
 OPTIONS
 -------
+
+*-d* '<index>'::
+    the device index (default is 0)
+
 *-f* '<input format>'::
     the input device format
 

diff --git a/doc/man/picoproj.1.txt b/doc/man/picoproj.1.txt
index 263b0df..0fea153 100644 (file)
--- a/doc/man/picoproj.1.txt
+++ b/doc/man/picoproj.1.txt
@@ -23,6 +23,9 @@ larger than the device native resolution can be wrongly displayed.
 OPTIONS
 -------
 
+*-d* '<index>'::
+    the device index (default is 0)
+
 *-f* '<filename>'::
     the image file to upload
 

diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
index 6d5d3c7..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");
@@ -622,14 +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;
@@ -797,7 +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;

diff --git a/examples/picoproj.c b/examples/picoproj.c
index 54cbedf..b13a67c 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");
@@ -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;