isp: Add histogram supporthistogram

Support enabling the histogram statistics engine and retrieving
histogram data. Histogram data is currently ignored in the image quality
tuning implementation.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/snapshot.c b/snapshot.c
index 878d4bf..61e297f 100644
--- a/snapshot.c
+++ b/snapshot.c
@@ -119,6 +119,12 @@ static void __iq_aewb_process(struct omap3_isp_device *isp __attribute__((__unus
 	iq_aewb_process(iq, stats);
 }
 
+static void __iq_histogram_process(struct omap3_isp_device *isp __attribute__((__unused__)),
+				   const struct omap3_isp_histogram_stats *stats)
+{
+	iq_histogram_process(iq, stats);
+}
+
 /* -----------------------------------------------------------------------------
  * Events
  */
@@ -617,6 +623,7 @@ int main(int argc __attribute__((__unused__)), char *argv[] __attribute__((__unu
 	ops.watch_fd = __events_watch_fd;
 	ops.unwatch_fd = __events_unwatch_fd;
 	ops.aewb_ready = __iq_aewb_process;
+	ops.histogram_ready = __iq_histogram_process,
 
 	isp = omap3_isp_open(MEDIA_DEVICE, &ops);
 	if (isp == NULL) {