diff options
| author | Ben Davis <ben.davis@arm.com> | 2020-06-01 17:28:17 +0100 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2020-06-19 13:33:40 +0100 |
| commit | 94b292b277343190175d39172c903c0c5fb814f1 (patch) | |
| tree | 717d75b1547f0aa6f46dce19cdf681d898c28538 /include/uapi/drm | |
| parent | 114427b8927a4def2942b2b886f7e4aeae289ccb (diff) | |
| download | linux-94b292b277343190175d39172c903c0c5fb814f1.tar.bz2 | |
drm: drm_fourcc: add NV15, Q410, Q401 YUV formats
DRM_FORMAT_NV15 is a 2 plane format suitable for linear and 16x16
block-linear memory layouts (DRM_FORMAT_MOD_SAMSUNG_16_16_TILE). The
format is similar to P010 with 4:2:0 sub-sampling but has no padding
between components. Instead, luminance and chrominance samples are
grouped into 4s so that each group is packed into an integer number
of bytes:
YYYY = UVUV = 4 * 10 bits = 40 bits = 5 bytes
The '15' suffix refers to the optimum effective bits per pixel which is
achieved when the total number of luminance samples is a multiple of 8.
Q410 and Q401 are both 3 plane non-subsampled formats with 16 bits per
component, but only 10 bits are used and 6 are padded. 'Q' is chosen
as the first letter to denote 3 plane YUV444, (and is the next letter
along from P which is usually 2 plane).
V2: Updated block_w of NV15 to {4, 2, 0}
V3: Updated commit message to include specific modifier name
NV15:
Tested-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Ben Davis <ben.davis@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200601162817.18230-1-ben.davis@arm.com
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/drm_fourcc.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 9e488d10f8b4..3c4055e48371 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -236,6 +236,12 @@ extern "C" { #define DRM_FORMAT_NV61 fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */ #define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */ #define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */ +/* + * 2 plane YCbCr + * index 0 = Y plane, [39:0] Y3:Y2:Y1:Y0 little endian + * index 1 = Cr:Cb plane, [39:0] Cr1:Cb1:Cr0:Cb0 little endian + */ +#define DRM_FORMAT_NV15 fourcc_code('N', 'V', '1', '5') /* 2x2 subsampled Cr:Cb plane */ /* * 2 plane YCbCr MSB aligned @@ -265,6 +271,22 @@ extern "C" { */ #define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */ +/* 3 plane non-subsampled (444) YCbCr + * 16 bits per component, but only 10 bits are used and 6 bits are padded + * index 0: Y plane, [15:0] Y:x [10:6] little endian + * index 1: Cb plane, [15:0] Cb:x [10:6] little endian + * index 2: Cr plane, [15:0] Cr:x [10:6] little endian + */ +#define DRM_FORMAT_Q410 fourcc_code('Q', '4', '1', '0') + +/* 3 plane non-subsampled (444) YCrCb + * 16 bits per component, but only 10 bits are used and 6 bits are padded + * index 0: Y plane, [15:0] Y:x [10:6] little endian + * index 1: Cr plane, [15:0] Cr:x [10:6] little endian + * index 2: Cb plane, [15:0] Cb:x [10:6] little endian + */ +#define DRM_FORMAT_Q401 fourcc_code('Q', '4', '0', '1') + /* * 3 plane YCbCr * index 0: Y plane, [7:0] Y |