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[v6,1/5] v4l: Add new Colorimetry Class

Message ID 20210323134040.943757-2-stanimir.varbanov@linaro.org (mailing list archive)
State Not Applicable, archived
Headers show
Series HDR10 static metadata | expand

Commit Message

Stanimir Varbanov March 23, 2021, 1:40 p.m. UTC 
Add Colorimetry control class for colorimetry controls

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
 drivers/media/v4l2-core/v4l2-ctrls.c | 7 ++++++-
 include/uapi/linux/v4l2-controls.h   | 4 ++++
 2 files changed, 10 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index ca50e21e2838..41ded74c6764 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1204,6 +1204,10 @@  const char *v4l2_ctrl_get_name(u32 id)
 	case V4L2_CID_STATELESS_H264_SLICE_PARAMS:		return "H264 Slice Parameters";
 	case V4L2_CID_STATELESS_H264_DECODE_PARAMS:		return "H264 Decode Parameters";
 	case V4L2_CID_STATELESS_FWHT_PARAMS:			return "FWHT Stateless Parameters";
+
+	/* Colorimetry controls */
+	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+	case V4L2_CID_COLORIMETRY_CLASS:	return "Colorimetry Controls";
 	default:
 		return NULL;
 	}
@@ -1395,8 +1399,9 @@  void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
 	case V4L2_CID_RF_TUNER_CLASS:
 	case V4L2_CID_DETECT_CLASS:
 	case V4L2_CID_CODEC_STATELESS_CLASS:
+	case V4L2_CID_COLORIMETRY_CLASS:
 		*type = V4L2_CTRL_TYPE_CTRL_CLASS;
-		/* You can neither read not write these */
+		/* You can neither read nor write these */
 		*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
 		*min = *max = *step = *def = 0;
 		break;
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 6f8c08507bf4..038c722ca4d2 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -66,6 +66,7 @@ 
 #define V4L2_CTRL_CLASS_RF_TUNER	0x00a20000	/* RF tuner controls */
 #define V4L2_CTRL_CLASS_DETECT		0x00a30000	/* Detection controls */
 #define V4L2_CTRL_CLASS_CODEC_STATELESS 0x00a40000	/* Stateless codecs controls */
+#define V4L2_CTRL_CLASS_COLORIMETRY	0x00a50000	/* Colorimetry controls */
 
 /* User-class control IDs */
 
@@ -1661,6 +1662,9 @@  struct v4l2_ctrl_fwht_params {
 	__u32 quantization;
 };
 
+#define V4L2_CID_COLORIMETRY_CLASS_BASE	(V4L2_CTRL_CLASS_COLORIMETRY | 0x900)
+#define V4L2_CID_COLORIMETRY_CLASS	(V4L2_CTRL_CLASS_COLORIMETRY | 1)
+
 /* MPEG-compression definitions kept for backwards compatibility */
 #ifndef __KERNEL__
 #define V4L2_CTRL_CLASS_MPEG            V4L2_CTRL_CLASS_CODEC