This format is produced by VeriSilicon Hantro G2 and VC8000D cores. It is a simple 4x4 tiling layout in a linear way. The pixel format was introduced by GStreamer using FourCC VT12, so let's stick to it. Link: https://gstreamer.freedesktop.org/documentation/video/video-format.html Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> --- Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | 6 ++++++ drivers/media/v4l2-core/v4l2-common.c | 3 +++ include/uapi/linux/videodev2.h | 1 + 3 files changed, 10 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst index e4dd62dc08cf..c21ab9400e53 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst @@ -255,6 +255,7 @@ of the luma plane. .. _V4L2-PIX-FMT-NV12MT: .. _V4L2-PIX-FMT-NV12MT-16X16: .. _V4L2-PIX-FMT-NV12-32L32: +.. _V4L2-PIX-FMT-NV12-4L4: Tiled NV12 ---------- @@ -283,6 +284,11 @@ macroblocks 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. +``V4L2_PIX_FMT_NV12_4L4`` stores pixel in 2D 4x4 macroblocks, and stores +macroblocks linearly in memory. The line stride and image height must be +aligned to a multiple of 4. The layouts of the luma and chroma planes are +identical. + .. _nv12mt: .. kernel-figure:: nv12mt.svg diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 04af03285a20..df34b2a283bc 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -275,6 +275,9 @@ const struct v4l2_format_info *v4l2_format_info(u32 format) { .format = V4L2_PIX_FMT_YUV422P, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 1 }, { .format = V4L2_PIX_FMT_GREY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 }, + /* Tiled YUV formats */ + { .format = V4L2_PIX_FMT_NV12_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 2 }, + /* YUV planar formats, non contiguous variant */ { .format = V4L2_PIX_FMT_YUV420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 }, { .format = V4L2_PIX_FMT_YVU420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 }, diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 5a293175f791..f0ce0ea54754 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -629,6 +629,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_NV12MT v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 64x32 macroblocks */ #define V4L2_PIX_FMT_NV12MT_16X16 v4l2_fourcc('V', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 16x16 macroblocks */ #define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* Tiled NV12 32x32 macroblocks in linear order */ +#define V4L2_PIX_FMT_NV12_4L4 v4l2_fourcc('V', 'T', '1', '2') /* Tiled NV12 4x4 macroblocks in linear order */ /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */ #define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */ -- 2.32.0
