iq: Make the IQ parameters configurable

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 25 insertions, 1 deletions

diff --git a/live.c b/live.c
index 0144372..68b9b42 100644
--- a/live.c
+++ b/live.c
@@ -325,9 +325,21 @@ static void usage(const char *argv0)
 	printf("-b, --buffers n		Use n display buffers\n");
 	printf("-h, --help		Show this help screen\n");
 	printf("-s, --skip n		Skip display of n frames out of n+1\n");
+	printf("    --aewb param=value	Set AEWB algorithm parameter 'param' to 'value'\n");
+	printf("\nSupported AEWB parameters are:\n");
+	printf("- exposure-def		Exposure time default value\n");
+	printf("- exposure-min		Exposure time minimum value\n");
+	printf("- exposure-max		Exposure time maximum value\n");
+	printf("- gain-def		Sensor gain default value\n");
+	printf("- gain-min		Sensor gain minimum value\n");
+	printf("- gain-max		Sensor gain maximum value\n");
+	printf("- mean-level		Mean luminance target level (float [0-1])\n");
 }
 
+#define OPT_AEWB_PARAM		256
+
 static struct option opts[] = {
+	{ "aewb", 1, 0, OPT_AEWB_PARAM },
 	{ "help", 0, 0, 'h' },
 	{ "skip", 1, 0, 's' },
 	{ 0, 0, 0, 0 }
@@ -339,6 +351,7 @@ int main(int argc __attribute__((__unused__)), char *argv[] __attribute__((__unu
 	struct v4l2_buffers_pool *pool = NULL;
 	struct v4l2_pix_format format;
 	struct timespec start, end;
+	struct iq_params iq_params;
 	unsigned int buffers = 3;
 	struct v4l2_rect rect;
 	int exit_code = EXIT_FAILURE;
@@ -347,6 +360,8 @@ int main(int argc __attribute__((__unused__)), char *argv[] __attribute__((__unu
 	int ret;
 	int c;
 
+	iq_params_init(&iq_params);
+
 	while ((c = getopt_long(argc, argv, "b:hs:", opts, NULL)) != -1) {
 		switch (c) {
 		case 'b':
@@ -358,6 +373,15 @@ int main(int argc __attribute__((__unused__)), char *argv[] __attribute__((__unu
 		case 's':
 			frame_skip = atoi(optarg);
 			break;
+		case OPT_AEWB_PARAM:
+			ret = iq_params_parse(&iq_params, optarg);
+			if (ret < 0) {
+				printf("%s AEWB argument %s.\n",
+				       ret == -ERANGE ? "out-of-range" : "invalid",
+				       optarg);
+				return 1;
+			}
+			break;
 		default:
 			printf("Invalid option -%c\n", c);
 			printf("Run %s -h for help.\n", argv[0]);
@@ -401,7 +425,7 @@ int main(int argc __attribute__((__unused__)), char *argv[] __attribute__((__unu
 	printf("viewfinder configured for %04x %ux%u\n",
 	       view_format.code, view_format.width, view_format.height);
 
-	iq = iq_init(isp);
+	iq = iq_init(isp, &iq_params);
 	if (iq == NULL) {
 		printf("error: unable to initialize image quality tuning\n");
 		goto cleanup;