From e82822fae93ffc2b48362bfbcdef2ad00eaf944b Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Date: Fri, 12 Nov 2021 20:57:10 +0100 Subject: [PATCH] media: uvcvideo: Set the colorspace as sRGB if undefined MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Never return V4L2_COLORSPACE_DEFAULT. From the standard: """ In the absence of this descriptor, or in the case of “Unspecified” values within the descriptor, color matching defaults will be assumed. The color matching defaults are compliant with sRGB since the BT.709 transfer function and the sRGB transfer function are very similar. """ Signed-off-by: Ricardo Ribalda Tested-by: James Hilliard Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/uvc/uvc_driver.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 7c007426e082..57152648d8ae 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -256,7 +256,7 @@ static struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16]) static enum v4l2_colorspace uvc_colorspace(const u8 primaries) { static const enum v4l2_colorspace colorprimaries[] = { - V4L2_COLORSPACE_DEFAULT, /* Unspecified */ + V4L2_COLORSPACE_SRGB, /* Unspecified */ V4L2_COLORSPACE_SRGB, V4L2_COLORSPACE_470_SYSTEM_M, V4L2_COLORSPACE_470_SYSTEM_BG, @@ -267,7 +267,7 @@ static enum v4l2_colorspace uvc_colorspace(const u8 primaries) if (primaries < ARRAY_SIZE(colorprimaries)) return colorprimaries[primaries]; - return V4L2_COLORSPACE_DEFAULT; /* Reserved */ + return V4L2_COLORSPACE_SRGB; /* Reserved */ } static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics) @@ -769,6 +769,8 @@ static int uvc_parse_format(struct uvc_device *dev, buflen -= buffer[0]; buffer += buffer[0]; + } else { + format->colorspace = V4L2_COLORSPACE_SRGB; } return buffer - start; -- 2.11.0