[media] V4L: Add camera exposure metering control
The V4L2_CID_EXPOSURE_METERING control allows to determine
a method used by the camera for measuring the amount of light
available for automatic exposure.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
index debaf9f..55dd813 100644
--- a/drivers/media/video/v4l2-ctrls.c
+++ b/drivers/media/video/v4l2-ctrls.c
@@ -230,6 +230,12 @@
"Aperture Priority Mode",
NULL
};
+ static const char * const camera_exposure_metering[] = {
+ "Average",
+ "Center Weighted",
+ "Spot",
+ NULL
+ };
static const char * const colorfx[] = {
"None",
"Black & White",
@@ -434,6 +440,8 @@
return camera_power_line_frequency;
case V4L2_CID_EXPOSURE_AUTO:
return camera_exposure_auto;
+ case V4L2_CID_EXPOSURE_METERING:
+ return camera_exposure_metering;
case V4L2_CID_COLORFX:
return colorfx;
case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
@@ -632,6 +640,7 @@
case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization";
case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity";
case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto";
+ case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode";
/* FM Radio Modulator control */
/* Keep the order of the 'case's the same as in videodev2.h! */
@@ -783,6 +792,7 @@
case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
case V4L2_CID_ISO_SENSITIVITY_AUTO:
+ case V4L2_CID_EXPOSURE_METERING:
*type = V4L2_CTRL_TYPE_MENU;
break;
case V4L2_CID_LINK_FREQ: