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usb: uvc: Enumerate valid values for color matching 

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>
Link: https://lore.kernel.org/r/20230202114142.300858-2-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daniel Scally 2023-02-02 11:41:37 +00:00 committed by Greg Kroah-Hartman
parent ce33e64c17
commit e16cab9c15
1 changed files with 30 additions and 0 deletions
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30
include/uapi/linux/usb/video.h
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@ -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
*/