| Message ID | 20200706223009.1200-2-jonas@kwiboo.se (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2,1/2] drm: drm_fourcc: add NV20 and NV30 YUV formats | expand |
在 2020/7/7 6:30, Jonas Karlman 写道: > DRM_FORMAT_NV20 and DRM_FORMAT_NV30 formats is the 2x1 and non-subsampled > variant of NV15, a 10-bit 2-plane YUV format that 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 '20' and '30' suffix refers to the optimum effective bits per pixel > which is achieved when the total number of luminance samples is a multiple > of 4. > > V2: Added NV30 format > > Signed-off-by: Jonas Karlman <jonas@kwiboo.se> > --- > drivers/gpu/drm/drm_fourcc.c | 8 ++++++++ > include/uapi/drm/drm_fourcc.h | 2 ++ > 2 files changed, 10 insertions(+) > > diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c > index 722c7ebe4e88..2daf8a304b53 100644 > --- a/drivers/gpu/drm/drm_fourcc.c > +++ b/drivers/gpu/drm/drm_fourcc.c > @@ -278,6 +278,14 @@ const struct drm_format_info *__drm_format_info(u32 format) > .num_planes = 2, .char_per_block = { 5, 5, 0 }, > .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, > .vsub = 2, .is_yuv = true }, > + { .format = DRM_FORMAT_NV20, .depth = 0, > + .num_planes = 2, .char_per_block = { 5, 5, 0 }, > + .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, > + .vsub = 1, .is_yuv = true }, > + { .format = DRM_FORMAT_NV30, .depth = 0, > + .num_planes = 2, .char_per_block = { 5, 5, 0 }, > + .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1, > + .vsub = 1, .is_yuv = true }, > { .format = DRM_FORMAT_Q410, .depth = 0, > .num_planes = 3, .char_per_block = { 2, 2, 2 }, > .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0, > diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h > index cbf92fdf2712..c8695673295c 100644 > --- a/include/uapi/drm/drm_fourcc.h > +++ b/include/uapi/drm/drm_fourcc.h > @@ -242,6 +242,8 @@ extern "C" { > * 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 */ > +#define DRM_FORMAT_NV20 fourcc_code('N', 'V', '2', '0') /* 2x1 subsampled Cr:Cb plane */ > +#define DRM_FORMAT_NV30 fourcc_code('N', 'V', '3', '0') /* non-subsampled Cr:Cb plane */ > > /* > * 2 plane YCbCr MSB aligned Reviewed-by: Sandy Huang <hjc@rock-chips.com>
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index 722c7ebe4e88..2daf8a304b53 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -278,6 +278,14 @@ const struct drm_format_info *__drm_format_info(u32 format) .num_planes = 2, .char_per_block = { 5, 5, 0 }, .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, + { .format = DRM_FORMAT_NV20, .depth = 0, + .num_planes = 2, .char_per_block = { 5, 5, 0 }, + .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, + .vsub = 1, .is_yuv = true }, + { .format = DRM_FORMAT_NV30, .depth = 0, + .num_planes = 2, .char_per_block = { 5, 5, 0 }, + .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1, + .vsub = 1, .is_yuv = true }, { .format = DRM_FORMAT_Q410, .depth = 0, .num_planes = 3, .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0, diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index cbf92fdf2712..c8695673295c 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -242,6 +242,8 @@ extern "C" { * 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 */ +#define DRM_FORMAT_NV20 fourcc_code('N', 'V', '2', '0') /* 2x1 subsampled Cr:Cb plane */ +#define DRM_FORMAT_NV30 fourcc_code('N', 'V', '3', '0') /* non-subsampled Cr:Cb plane */ /* * 2 plane YCbCr MSB aligned
DRM_FORMAT_NV20 and DRM_FORMAT_NV30 formats is the 2x1 and non-subsampled variant of NV15, a 10-bit 2-plane YUV format that 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 '20' and '30' suffix refers to the optimum effective bits per pixel which is achieved when the total number of luminance samples is a multiple of 4. V2: Added NV30 format Signed-off-by: Jonas Karlman <jonas@kwiboo.se> --- drivers/gpu/drm/drm_fourcc.c | 8 ++++++++ include/uapi/drm/drm_fourcc.h | 2 ++ 2 files changed, 10 insertions(+)