From mboxrd@z Thu Jan 1 00:00:00 1970 From: paul.kocialkowski@bootlin.com (Paul Kocialkowski) Date: Fri, 04 May 2018 09:58:41 +0200 Subject: [PATCH v2 06/10] media: v4l: Add definition for Allwinner's MB32-tiled NV12 format In-Reply-To: <198e991c-1052-5bfb-f397-0e7d388b3c00@xs4all.nl> References: <20180419154124.17512-1-paul.kocialkowski@bootlin.com> <20180419154536.17846-2-paul.kocialkowski@bootlin.com> <198e991c-1052-5bfb-f397-0e7d388b3c00@xs4all.nl> Message-ID: <18af23e5efe2cdef5ed4b51c6dbf1ddeef8ffd5f.camel@bootlin.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, On Fri, 2018-04-20 at 15:59 +0200, Hans Verkuil wrote: > On 04/19/18 17:45, Paul Kocialkowski wrote: > > This introduces support for Allwinner's MB32-tiled NV12 format, > > where > > each plane is divided into macroblocks of 32x32 pixels. Hence, the > > size > > of each plane has to be aligned to 32 bytes. The pixels inside each > > macroblock are coded as they would be if the macroblock was a single > > plane, line after line. > > > > The MB32-tiled NV12 format is used by the video engine on Allwinner > > platforms: it is the default format for decoded frames (and the only > > one > > available in the oldest supported platforms). > > > > Signed-off-by: Paul Kocialkowski > > --- > > include/uapi/linux/videodev2.h | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/include/uapi/linux/videodev2.h > > b/include/uapi/linux/videodev2.h > > index 4b8336f7bcf0..43993a116e2b 100644 > > --- a/include/uapi/linux/videodev2.h > > +++ b/include/uapi/linux/videodev2.h > > @@ -669,6 +669,7 @@ 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_MB32_NV12 v4l2_fourcc('M', 'N', '1', '2') /* > > Allwinner NV12 in 32x32 macroblocks */ > > > > /* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 > > bits unused */ > > #define V4L2_PIX_FMT_IPU3_SBGGR10 v4l2_fourcc('i', 'p', '3', > > 'b') /* IPU3 packed 10-bit BGGR bayer */ > > > > Add an entry for this to v4l_fill_fmtdesc() in v4l2-ioctl.c. > > It also needs to be documented in the spec. Noted, I will look in that direction for the future versions. Cheers, -- Paul Kocialkowski, Bootlin (formerly Free Electrons) Embedded Linux and kernel engineering https://bootlin.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 488 bytes Desc: This is a digitally signed message part URL: