LinuxTV Patchwork [v10,2/2] drm/fourcc: add a 10bits fully packed variant of NV12

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Submitter ayaka
Date Jan. 9, 2019, 7:57 p.m.
Message ID <20190109195710.28501-3-ayaka@soulik.info>
Download mbox | patch
Permalink /patch/53829/
State New
Headers show

Comments

ayaka - Jan. 9, 2019, 7:57 p.m.
This pixel format is a fully packed and 10bits variant of NV12.
A luma pixel would take 10bits in memory, without any
filled bits between pixels in a stride.

Signed-off-by: Randy Li <ayaka@soulik.info>
---
 drivers/gpu/drm/drm_fourcc.c  | 4 ++++
 include/uapi/drm/drm_fourcc.h | 8 ++++++++
 2 files changed, 12 insertions(+)

Patch

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index ba7e19d4336c..16d3be8278f1 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -247,6 +247,10 @@  const struct drm_format_info *__drm_format_info(u32 format)
 		{ .format = DRM_FORMAT_P016,		.depth = 0,  .num_planes = 2,
 		  .char_per_block = { 2, 4, 0 }, .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 },
 		  .hsub = 2, .vsub = 2, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV12_10LE40,	.depth = 0,  .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 },
+		},
 	};
 
 	unsigned int i;
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 8dd1328bc8d6..4985fb19b4ce 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -194,6 +194,14 @@  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 */
+/*
+ * A fully packed  2 plane YCbCr
+ * Y1 0-9, Y2 10-19, Y3 20-29, Y4 20-39
+ * ....
+ * U1V1: 0-19, U2V2: 20-39
+ */
+#define DRM_FORMAT_NV12_10LE40	fourcc_code('R', 'K', '2', '0') /* 2x2 subsampled Cr:Cb plane */
+
 
 /*
  * 2 plane YCbCr MSB aligned

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