diff mbox series

[RESEND,v3,1/6] usb: uvc: Enumerate valid values for color matching

Message ID 20230202114142.300858-2-dan.scally@ideasonboard.com (mailing list archive)
State Accepted
Commit e16cab9c1596e251761d2bfb5e1467950d616963
Headers show
Series UVC Gadget: Extend color matching support | expand

Commit Message

Dan Scally Feb. 2, 2023, 11:41 a.m. UTC 
The color matching descriptors defined in the UVC Specification
contain 3 fields with discrete numeric values representing particular
settings. Enumerate those values so that later code setting them can
be more readable.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
---
Changes in v3 (Laurent):

  - Added the document reference to the comment

Changes in v2:

	- Renamed uvcg_cmd to uvcg_color_matching plus the associated
	  variables (Kieran, Laurent)
	- Added a refcnt member to struct uvcg_color_matching
  
 include/uapi/linux/usb/video.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
diff mbox series

Patch

diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
index 6e8e572c2980..2ff0e8a3a683 100644
--- a/include/uapi/linux/usb/video.h
+++ b/include/uapi/linux/usb/video.h
@@ -179,6 +179,36 @@ 
 #define UVC_CONTROL_CAP_AUTOUPDATE			(1 << 3)
 #define UVC_CONTROL_CAP_ASYNCHRONOUS			(1 << 4)
 
+/* 3.9.2.6 Color Matching Descriptor Values */
+enum uvc_color_primaries_values {
+	UVC_COLOR_PRIMARIES_UNSPECIFIED,
+	UVC_COLOR_PRIMARIES_BT_709_SRGB,
+	UVC_COLOR_PRIMARIES_BT_470_2_M,
+	UVC_COLOR_PRIMARIES_BT_470_2_B_G,
+	UVC_COLOR_PRIMARIES_SMPTE_170M,
+	UVC_COLOR_PRIMARIES_SMPTE_240M,
+};
+
+enum uvc_transfer_characteristics_values {
+	UVC_TRANSFER_CHARACTERISTICS_UNSPECIFIED,
+	UVC_TRANSFER_CHARACTERISTICS_BT_709,
+	UVC_TRANSFER_CHARACTERISTICS_BT_470_2_M,
+	UVC_TRANSFER_CHARACTERISTICS_BT_470_2_B_G,
+	UVC_TRANSFER_CHARACTERISTICS_SMPTE_170M,
+	UVC_TRANSFER_CHARACTERISTICS_SMPTE_240M,
+	UVC_TRANSFER_CHARACTERISTICS_LINEAR,
+	UVC_TRANSFER_CHARACTERISTICS_SRGB,
+};
+
+enum uvc_matrix_coefficients {
+	UVC_MATRIX_COEFFICIENTS_UNSPECIFIED,
+	UVC_MATRIX_COEFFICIENTS_BT_709,
+	UVC_MATRIX_COEFFICIENTS_FCC,
+	UVC_MATRIX_COEFFICIENTS_BT_470_2_B_G,
+	UVC_MATRIX_COEFFICIENTS_SMPTE_170M,
+	UVC_MATRIX_COEFFICIENTS_SMPTE_240M,
+};
+
 /* ------------------------------------------------------------------------
  * UVC structures
  */