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media: vivid: Add support to the CSC API

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The CSC API (Colorspace conversion) allows userspace to try
to configure the colorspace, transfer function, Y'CbCr/HSV encoding
and the quantization for capture devices. This patch adds support
to the CSC API in vivid.
Using the CSC API, userspace is allowed to do the following:

- Set the colorspace.
- Set the xfer_func.
- Set the ycbcr_enc function for YUV formats.
- Set the hsv_enc function for HSV formats
- Set the quantization for YUV and RGB formats.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Dafna Hirschfeld
2020-08-27 21:46:09 +02:00
committed by Mauro Carvalho Chehab
parent b38c73ca1c
commit 2f49146349
3 changed files with 86 additions and 6 deletions
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29
include/media/v4l2-common.h
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@@ -539,4 +539,33 @@ static inline void v4l2_buffer_set_timestamp(struct v4l2_buffer *buf,
buf->timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC;
}
static inline bool v4l2_is_colorspace_valid(__u32 colorspace)
{
return colorspace > V4L2_COLORSPACE_DEFAULT &&
colorspace <= V4L2_COLORSPACE_DCI_P3;
}
static inline bool v4l2_is_xfer_func_valid(__u32 xfer_func)
{
return xfer_func > V4L2_XFER_FUNC_DEFAULT &&
xfer_func <= V4L2_XFER_FUNC_SMPTE2084;
}
static inline bool v4l2_is_ycbcr_enc_valid(__u8 ycbcr_enc)
{
return ycbcr_enc > V4L2_YCBCR_ENC_DEFAULT &&
ycbcr_enc <= V4L2_YCBCR_ENC_SMPTE240M;
}
static inline bool v4l2_is_hsv_enc_valid(__u8 hsv_enc)
{
return hsv_enc == V4L2_HSV_ENC_180 || hsv_enc == V4L2_HSV_ENC_256;
}
static inline bool v4l2_is_quant_valid(__u8 quantization)
{
return quantization == V4L2_QUANTIZATION_FULL_RANGE ||
quantization == V4L2_QUANTIZATION_LIM_RANGE;
}
#endif /* V4L2_COMMON_H_ */