diff options
author | Ezequiel Garcia | 2021-08-05 04:47:49 +0200 |
---|---|---|
committer | Mauro Carvalho Chehab | 2021-09-30 10:07:39 +0200 |
commit | b84f60a307f09debe30cc171b0f0a5c36797cf67 (patch) | |
tree | 13577d88b66efa8c670ffbb8c2b1c1a7ee14adc1 /Documentation/userspace-api | |
parent | 9be0352dae9ad8d7838d55c80d3b2e76c98fed87 (diff) |
media: Rename V4L2_PIX_FMT_SUNXI_TILED_NV12 to V4L2_PIX_FMT_NV12_32L32
The V4L2_PIX_FMT_SUNXI_TILED_NV12 format is actually a fairly
common NV12 tiled format, with 32x32 linear tiles. Rename the format
and move its documentation together with the other tiled NV12 formats.
Keep V4L2_PIX_FMT_SUNXI_TILED_NV12 for application compatibility.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/userspace-api')
3 files changed, 11 insertions, 17 deletions
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst index 0b879c0da713..e762f911737a 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst @@ -246,20 +246,6 @@ please make a proposal on the linux-media mailing list. It is an opaque intermediate format and the MDP hardware must be used to convert ``V4L2_PIX_FMT_MT21C`` to ``V4L2_PIX_FMT_NV12M``, ``V4L2_PIX_FMT_YUV420M`` or ``V4L2_PIX_FMT_YVU420``. - * .. _V4L2-PIX-FMT-SUNXI-TILED-NV12: - - - ``V4L2_PIX_FMT_SUNXI_TILED_NV12`` - - 'ST12' - - Two-planar NV12-based format used by the video engine found on Allwinner - (codenamed sunxi) platforms, with 32x32 tiles for the luminance plane - and 32x64 tiles for the chrominance plane. The data in each tile is - stored in linear order, within the tile bounds. Each tile follows the - previous one linearly in memory (from left to right, top to bottom). - - The associated buffer dimensions are aligned to match an integer number - of tiles, resulting in 32-aligned resolutions for the luminance plane - and 16-aligned resolutions for the chrominance plane (with 2x2 - subsampling). .. raw:: latex diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst index 090c091affd2..edeaf7628b28 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst @@ -254,14 +254,16 @@ of the luma plane. .. _V4L2-PIX-FMT-NV12MT: .. _V4L2-PIX-FMT-NV12MT-16X16: +.. _V4L2-PIX-FMT-NV12-32L32: -NV12MT and MV12MT_16X16 ------------------------ +Tiled NV12 +---------- Semi-planar YUV 4:2:0 formats, using macroblock tiling. The chroma plane is subsampled by 2 in each direction. Chroma lines contain half the number of pixels and the same number of bytes as luma lines, and the chroma plane -contains half the number of lines of the luma plane. +contains half the number of lines of the luma plane. Each tile follows the +previous one linearly in memory (from left to right, top to bottom). ``V4L2_PIX_FMT_NV12MT_16X16`` stores pixel in 2D 16x16 macroblocks, and stores macroblocks linearly in memory. The line stride and image height must be @@ -276,6 +278,11 @@ If the vertical resolution is an odd number of macroblocks, the last row of macroblocks is stored in linear order. The layouts of the luma and chroma planes are identical. +``V4L2_PIX_FMT_NV12_32L32`` stores pixel in 32x32 tiles, and stores +tiles linearly in memory. The line stride and image height must be +aligned to a multiple of 32. The layouts of the luma and chroma planes are +identical. + .. _nv12mt: .. kernel-figure:: nv12mt.svg diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions index 2217b56c2686..982675a2342e 100644 --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions @@ -187,6 +187,7 @@ replace define V4L2_CAP_IO_MC device-capabilities # V4L2 pix flags replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format` replace define V4L2_PIX_FMT_FLAG_PREMUL_ALPHA format-flags +replace define V4L2_PIX_FMT_SUNXI_TILED_NV12 :c:type:`v4l2_pix_format` # V4L2 format flags replace define V4L2_FMT_FLAG_COMPRESSED fmtdesc-flags |