在 2019/9/24 上午2:30, Ville Syrjälä 写道:
On Mon, Sep 23, 2019 at 06:05:22AM -0700, sandy.huang wrote:
在 2019/9/23 上午5:53, Ville Syrjälä 写道:
On Mon, Sep 23, 2019 at 08:38:50PM +0800, Sandy Huang wrote:
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 3feeaa3..5fe89e9 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -266,6 +266,21 @@ extern "C" {
#define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
/*
+ * 2 plane YCbCr 10bit
+ * index 0 = Y plane, [9:0] Y
+ * index 1 = Cr:Cb plane, [19:0] Cr:Cb little endian
+ * or
+ * index 1 = Cb:Cr plane, [19:0] Cb:Cr little endian
What does "little endian" even mean for these?
It's Inherited from the following define, the difference is 8bit and 10bit.
/*
* 2 plane YCbCr
* index 0 = Y plane, [7:0] Y
* index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
* or
* index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
*/
#define DRM_FORMAT_NV12 fourcc_code('N', 'V', '1', '2') /* 2x2
subsampled Cr:Cb plane */
#define DRM_FORMAT_NV21 fourcc_code('N', 'V', '2', '1') /* 2x2
subsampled Cb:Cr plane */
#define DRM_FORMAT_NV16 fourcc_code('N', 'V', '1', '6') /* 2x1
subsampled Cr:Cb plane */
#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',
Something not aligned to bytes can't have its endianness defined the
same way as these. Just doesn't make sense.
Get it ,thanks.
+ */
+
+#define DRM_FORMAT_NV12_10 fourcc_code('N', 'A', '1', '2') /* 2x2 subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV21_10 fourcc_code('N', 'A', '2', '1') /* 2x2 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV16_10 fourcc_code('N', 'A', '1', '6') /* 2x1 subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV61_10 fourcc_code('N', 'A', '6', '1') /* 2x1 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV24_10 fourcc_code('N', 'A', '2', '4') /* non-subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV42_10 fourcc_code('N', 'A', '4', '2') /* non-subsampled Cb:Cr plane */
+
+/*
* 3 plane YCbCr
* index 0: Y plane, [7:0] Y
* index 1: Cb plane, [7:0] Cb
--
2.7.4
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