diff mbox series

[v6,3/5] v4l: Add HDR10 static metadata controls

Message ID 20210323134040.943757-4-stanimir.varbanov@linaro.org
State Accepted
Commit 1ad0de78e7944eef171340d9fa00f0a59458991c
Headers show
Series HDR10 static metadata | expand

Commit Message

Stanimir Varbanov March 23, 2021, 1:40 p.m. UTC 
Introduce Content light level and Mastering display colour
volume Colorimetry compound controls with relevant payload
structures and validation.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

---
 drivers/media/v4l2-core/v4l2-ctrls.c | 68 ++++++++++++++++++++++++++++
 include/media/v4l2-ctrls.h           |  4 ++
 include/uapi/linux/v4l2-controls.h   | 31 +++++++++++++
 include/uapi/linux/videodev2.h       |  3 ++
 4 files changed, 106 insertions(+)

-- 
2.25.1
diff mbox series

Patch

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 41ded74c6764..4e825569a167 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1208,6 +1208,8 @@  const char *v4l2_ctrl_get_name(u32 id)
 	/* Colorimetry controls */
 	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
 	case V4L2_CID_COLORIMETRY_CLASS:	return "Colorimetry Controls";
+	case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:		return "HDR10 Content Light Info";
+	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:	return "HDR10 Mastering Display";
 	default:
 		return NULL;
 	}
@@ -1497,6 +1499,12 @@  void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
 		*type = V4L2_CTRL_TYPE_AREA;
 		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
 		break;
+	case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:
+		*type = V4L2_CTRL_TYPE_HDR10_CLL_INFO;
+		break;
+	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:
+		*type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY;
+		break;
 	default:
 		*type = V4L2_CTRL_TYPE_INTEGER;
 		break;
@@ -1792,6 +1800,12 @@  static void std_log(const struct v4l2_ctrl *ctrl)
 	case V4L2_CTRL_TYPE_FWHT_PARAMS:
 		pr_cont("FWHT_PARAMS");
 		break;
+	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+		pr_cont("HDR10_CLL_INFO");
+		break;
+	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+		pr_cont("HDR10_MASTERING_DISPLAY");
+		break;
 	default:
 		pr_cont("unknown type %d", ctrl->type);
 		break;
@@ -1844,6 +1858,7 @@  static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
 	struct v4l2_ctrl_hevc_sps *p_hevc_sps;
 	struct v4l2_ctrl_hevc_pps *p_hevc_pps;
 	struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
+	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
 	struct v4l2_area *area;
 	void *p = ptr.p + idx * ctrl->elem_size;
 	unsigned int i;
@@ -2139,6 +2154,53 @@  static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
 		zero_padding(*p_hevc_slice_params);
 		break;
 
+	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+		break;
+
+	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+		p_hdr10_mastering = p;
+
+		for (i = 0; i < 3; ++i) {
+			if (p_hdr10_mastering->display_primaries_x[i] <
+				V4L2_HDR10_MASTERING_PRIMARIES_X_LOW ||
+			    p_hdr10_mastering->display_primaries_x[i] >
+				V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH ||
+			    p_hdr10_mastering->display_primaries_y[i] <
+				V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW ||
+			    p_hdr10_mastering->display_primaries_y[i] >
+				V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH)
+				return -EINVAL;
+		}
+
+		if (p_hdr10_mastering->white_point_x <
+			V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW ||
+		    p_hdr10_mastering->white_point_x >
+			V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH ||
+		    p_hdr10_mastering->white_point_y <
+			V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW ||
+		    p_hdr10_mastering->white_point_y >
+			V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH)
+			return -EINVAL;
+
+		if (p_hdr10_mastering->max_display_mastering_luminance <
+			V4L2_HDR10_MASTERING_MAX_LUMA_LOW ||
+		    p_hdr10_mastering->max_display_mastering_luminance >
+			V4L2_HDR10_MASTERING_MAX_LUMA_HIGH ||
+		    p_hdr10_mastering->min_display_mastering_luminance <
+			V4L2_HDR10_MASTERING_MIN_LUMA_LOW ||
+		    p_hdr10_mastering->min_display_mastering_luminance >
+			V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
+			return -EINVAL;
+
+		/* The following restriction comes from ITU-T Rec. H.265 spec */
+		if (p_hdr10_mastering->max_display_mastering_luminance ==
+			V4L2_HDR10_MASTERING_MAX_LUMA_LOW &&
+		    p_hdr10_mastering->min_display_mastering_luminance ==
+			V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
+			return -EINVAL;
+
+		break;
+
 	case V4L2_CTRL_TYPE_AREA:
 		area = p;
 		if (!area->width || !area->height)
@@ -2832,6 +2894,12 @@  static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
 	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
 		elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
 		break;
+	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+		elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info);
+		break;
+	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+		elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display);
+		break;
 	case V4L2_CTRL_TYPE_AREA:
 		elem_size = sizeof(struct v4l2_area);
 		break;
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index 167ca8c8424f..9c3ddbf3d099 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -54,6 +54,8 @@  struct video_device;
  * @p_hevc_sps:			Pointer to an HEVC sequence parameter set structure.
  * @p_hevc_pps:			Pointer to an HEVC picture parameter set structure.
  * @p_hevc_slice_params:	Pointer to an HEVC slice parameters structure.
+ * @p_hdr10_cll:		Pointer to an HDR10 Content Light Level structure.
+ * @p_hdr10_mastering:		Pointer to an HDR10 Mastering Display structure.
  * @p_area:			Pointer to an area.
  * @p:				Pointer to a compound value.
  * @p_const:			Pointer to a constant compound value.
@@ -78,6 +80,8 @@  union v4l2_ctrl_ptr {
 	struct v4l2_ctrl_hevc_sps *p_hevc_sps;
 	struct v4l2_ctrl_hevc_pps *p_hevc_pps;
 	struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
+	struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll;
+	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
 	struct v4l2_area *p_area;
 	void *p;
 	const void *p_const;
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 038c722ca4d2..8cc8cd27936f 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -1665,6 +1665,37 @@  struct v4l2_ctrl_fwht_params {
 #define V4L2_CID_COLORIMETRY_CLASS_BASE	(V4L2_CTRL_CLASS_COLORIMETRY | 0x900)
 #define V4L2_CID_COLORIMETRY_CLASS	(V4L2_CTRL_CLASS_COLORIMETRY | 1)
 
+#define V4L2_CID_COLORIMETRY_HDR10_CLL_INFO	(V4L2_CID_COLORIMETRY_CLASS_BASE + 0)
+
+struct v4l2_ctrl_hdr10_cll_info {
+	__u16 max_content_light_level;
+	__u16 max_pic_average_light_level;
+};
+
+#define V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY	(V4L2_CID_COLORIMETRY_CLASS_BASE + 1)
+
+#define V4L2_HDR10_MASTERING_PRIMARIES_X_LOW	5
+#define V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH	37000
+#define V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW	5
+#define V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH	42000
+#define V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW	5
+#define V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH	37000
+#define V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW	5
+#define V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH	42000
+#define V4L2_HDR10_MASTERING_MAX_LUMA_LOW	50000
+#define V4L2_HDR10_MASTERING_MAX_LUMA_HIGH	100000000
+#define V4L2_HDR10_MASTERING_MIN_LUMA_LOW	1
+#define V4L2_HDR10_MASTERING_MIN_LUMA_HIGH	50000
+
+struct v4l2_ctrl_hdr10_mastering_display {
+	__u16 display_primaries_x[3];
+	__u16 display_primaries_y[3];
+	__u16 white_point_x;
+	__u16 white_point_y;
+	__u32 max_display_mastering_luminance;
+	__u32 min_display_mastering_luminance;
+};
+
 /* MPEG-compression definitions kept for backwards compatibility */
 #ifndef __KERNEL__
 #define V4L2_CTRL_CLASS_MPEG            V4L2_CTRL_CLASS_CODEC
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 79dbde3bcf8d..f5f971407b66 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1784,6 +1784,9 @@  enum v4l2_ctrl_type {
 	V4L2_CTRL_TYPE_U32	     = 0x0102,
 	V4L2_CTRL_TYPE_AREA          = 0x0106,
 
+	V4L2_CTRL_TYPE_HDR10_CLL_INFO		= 0x0110,
+	V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY	= 0x0111,
+
 	V4L2_CTRL_TYPE_H264_SPS             = 0x0200,
 	V4L2_CTRL_TYPE_H264_PPS		    = 0x0201,
 	V4L2_CTRL_TYPE_H264_SCALING_MATRIX  = 0x0202,