@@ -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
@@ -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
@@ -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
@@ -1282,6 +1282,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
+ case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break;
case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
@@ -1415,7 +1416,6 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
- case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
default:
if (fmt->description[0])
return;
@@ -282,7 +282,7 @@ static int cedrus_open(struct file *file)
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto err_ctrls;
}
- ctx->dst_fmt.pixelformat = V4L2_PIX_FMT_SUNXI_TILED_NV12;
+ ctx->dst_fmt.pixelformat = V4L2_PIX_FMT_NV12_32L32;
cedrus_prepare_format(&ctx->dst_fmt);
ctx->src_fmt.pixelformat = V4L2_PIX_FMT_MPEG2_SLICE;
/*
@@ -99,7 +99,7 @@ void cedrus_dst_format_set(struct cedrus_dev *dev,
cedrus_write(dev, VE_PRIMARY_FB_LINE_STRIDE, reg);
break;
- case V4L2_PIX_FMT_SUNXI_TILED_NV12:
+ case V4L2_PIX_FMT_NV12_32L32:
default:
reg = VE_PRIMARY_OUT_FMT_TILED_32_NV12;
cedrus_write(dev, VE_PRIMARY_OUT_FMT, reg);
@@ -56,7 +56,7 @@ static struct cedrus_format cedrus_formats[] = {
.capabilities = CEDRUS_CAPABILITY_VP8_DEC,
},
{
- .pixelformat = V4L2_PIX_FMT_SUNXI_TILED_NV12,
+ .pixelformat = V4L2_PIX_FMT_NV12_32L32,
.directions = CEDRUS_DECODE_DST,
},
{
@@ -124,7 +124,7 @@ void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
sizeimage = max_t(u32, SZ_1K, sizeimage);
break;
- case V4L2_PIX_FMT_SUNXI_TILED_NV12:
+ case V4L2_PIX_FMT_NV12_32L32:
/* 32-aligned stride. */
bytesperline = ALIGN(width, 32);
@@ -627,6 +627,9 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_YUV444M v4l2_fourcc('Y', 'M', '2', '4') /* 24 YUV444 planar */
#define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24 YVU444 planar */
+/* Tiled YUV formats */
+#define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12 Y/CbCr 4:2:0 32x32 tiles */
+
/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */
#define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */
@@ -734,7 +737,6 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_Z16 v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */
#define V4L2_PIX_FMT_MT21C v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode */
#define V4L2_PIX_FMT_INZI v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
-#define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */
#define V4L2_PIX_FMT_CNF4 v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */
@@ -2615,4 +2617,9 @@ struct v4l2_create_buffers {
#define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */
+/* Deprecated definitions kept for backwards compatibility */
+#ifndef __KERNEL__
+#define V4L2_PIX_FMT_SUNXI_TILED_NV12 V4L2_PIX_FMT_NV12_32L32
+#endif
+
#endif /* _UAPI__LINUX_VIDEODEV2_H */
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> --- .../userspace-api/media/v4l/pixfmt-reserved.rst | 14 -------------- .../userspace-api/media/v4l/pixfmt-yuv-planar.rst | 13 ++++++++++--- .../userspace-api/media/videodev2.h.rst.exceptions | 1 + drivers/media/v4l2-core/v4l2-ioctl.c | 2 +- drivers/staging/media/sunxi/cedrus/cedrus.c | 2 +- drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 2 +- drivers/staging/media/sunxi/cedrus/cedrus_video.c | 4 ++-- include/uapi/linux/videodev2.h | 9 ++++++++- 8 files changed, 24 insertions(+), 23 deletions(-)