Some hardware maps the Hue between 0 and 255 instead of 0-179. Support
this format with a new field hsv_enc.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.riba...@gmail.com>
---
include/uapi/linux/videodev2.h | 32 +++++++++++++++++++++++++++-----
1 file changed, 27 insertions(+), 5 deletions(-)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 58ed8aedc196..71a4c3c13ee0 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -335,6 +335,19 @@ enum v4l2_ycbcr_encoding {
};
/*
+ * enum v4l2_hsv_encoding values should not collide with the ones from
+ * enum v4l2_ycbcr_encoding.
+ */
+enum v4l2_hsv_encoding {
+
+ /* Hue mapped to 0 - 179 */
+ V4L2_HSV_ENC_180 = 128,
+
+ /* Hue mapped to 0-255 */
+ V4L2_HSV_ENC_256 = 129,
+};
+
+/*
* Determine how YCBCR_ENC_DEFAULT should map to a proper Y'CbCr encoding.
* This depends on the colorspace.
*/
@@ -362,9 +375,10 @@ enum v4l2_quantization {
* This depends on whether the image is RGB or not, the colorspace and the
* Y'CbCr encoding.
*/
-#define V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, colsp, ycbcr_enc) \
- (((is_rgb) && (colsp) == V4L2_COLORSPACE_BT2020) ?
V4L2_QUANTIZATION_LIM_RANGE : \
- (((is_rgb) || (ycbcr_enc) == V4L2_YCBCR_ENC_XV601 || \
+#define V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb_or_yuv, colsp, ycbcr_enc) \
+ (((is_rgb_or_yuv) && (colsp) == V4L2_COLORSPACE_BT2020) ? \
+ V4L2_QUANTIZATION_LIM_RANGE : \
+ (((is_rgb_or_yuv) || (ycbcr_enc) == V4L2_YCBCR_ENC_XV601 || \
(ycbcr_enc) == V4L2_YCBCR_ENC_XV709 || (colsp) ==
V4L2_COLORSPACE_JPEG) || \
(colsp) == V4L2_COLORSPACE_ADOBERGB || (colsp) ==
V4L2_COLORSPACE_SRGB ? \
V4L2_QUANTIZATION_FULL_RANGE : V4L2_QUANTIZATION_LIM_RANGE))
@@ -460,7 +474,12 @@ struct v4l2_pix_format {
__u32 colorspace; /* enum v4l2_colorspace */
__u32 priv; /* private data, depends on
pixelformat */
__u32 flags; /* format flags
(V4L2_PIX_FMT_FLAG_*) */
- __u32 ycbcr_enc; /* enum v4l2_ycbcr_encoding */
+ union {
+ /* enum v4l2_ycbcr_encoding */
+ __u32 ycbcr_enc;
+ /* enum v4l2_hsv_encoding */
+ __u32 hsv_enc;
+ };
__u32 quantization; /* enum v4l2_quantization */
__u32 xfer_func; /* enum v4l2_xfer_func */
};
@@ -1993,7 +2012,10 @@ struct v4l2_pix_format_mplane {
struct v4l2_plane_pix_format plane_fmt[VIDEO_MAX_PLANES];
__u8 num_planes;
__u8 flags;
- __u8 ycbcr_enc;
+ union {
+ __u8 ycbcr_enc;
+ __u8 hsv_enc;
+ };
__u8 quantization;
__u8 xfer_func;
__u8 reserved[7];
--
2.8.1
--
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