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[media] vimc: common: Add vimc_colorimetry_clamp 

Colorimetry value will always be checked in the same way. Adding a
helper macro for that

Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Helen Fornazier 2017-06-19 14:00:15 -03:00 committed by Mauro Carvalho Chehab
parent 288a22d45c
commit 441c0db6e5
1 changed files with 26 additions and 0 deletions
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26
drivers/media/platform/vimc/vimc-common.h
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@ -22,6 +22,32 @@
#include <media/media-device.h>
#include <media/v4l2-device.h>
/**
* struct vimc_colorimetry_clamp - Adjust colorimetry parameters
*
* @fmt: the pointer to struct v4l2_pix_format or
* struct v4l2_mbus_framefmt
*
* Entities must check if colorimetry given by the userspace is valid, if not
* then set them as DEFAULT
*/
#define vimc_colorimetry_clamp(fmt) \
do { \
if ((fmt)->colorspace == V4L2_COLORSPACE_DEFAULT \
|| (fmt)->colorspace > V4L2_COLORSPACE_DCI_P3) { \
(fmt)->colorspace = V4L2_COLORSPACE_DEFAULT; \
(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; \
(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT; \
(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT; \
} \
if ((fmt)->ycbcr_enc > V4L2_YCBCR_ENC_SMPTE240M) \
(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; \
if ((fmt)->quantization > V4L2_QUANTIZATION_LIM_RANGE) \
(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT; \
if ((fmt)->xfer_func > V4L2_XFER_FUNC_SMPTE2084) \
(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT; \
} while (0)
/**
* struct vimc_pix_map - maps media bus code with v4l2 pixel format
*