From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../DocBook/media/v4l/pixfmt-yuv420m.xml | 154 +++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 kernel/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml (limited to 'kernel/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml') diff --git a/kernel/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml b/kernel/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml new file mode 100644 index 000000000..e781cc617 --- /dev/null +++ b/kernel/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml @@ -0,0 +1,154 @@ + + + V4L2_PIX_FMT_YUV420M ('YM12') + &manvol; + + + V4L2_PIX_FMT_YUV420M + Variation of V4L2_PIX_FMT_YUV420 + with planes non contiguous in memory. + + + + Description + + This is a multi-planar format, as opposed to a packed format. +The three components are separated into three sub- images or planes. + +The Y plane is first. The Y plane has one byte per pixel. The Cb data +constitutes the second plane which is half the width and half +the height of the Y plane (and of the image). Each Cb belongs to four +pixels, a two-by-two square of the image. For example, +Cb0 belongs to Y'00, +Y'01, Y'10, and +Y'11. The Cr data, just like the Cb plane, is +in the third plane. + + If the Y plane has pad bytes after each row, then the Cb +and Cr planes have half as many pad bytes after their rows. In other +words, two Cx rows (including padding) is exactly as long as one Y row +(including padding). + + V4L2_PIX_FMT_YUV420M is intended to be +used only in drivers and applications that support the multi-planar API, +described in . + + + <constant>V4L2_PIX_FMT_YUV420M</constant> 4 × 4 +pixel image + + + Byte Order. + Each cell is one byte. + + + + + + start0 + 0: + Y'00 + Y'01 + Y'02 + Y'03 + + + start0 + 4: + Y'10 + Y'11 + Y'12 + Y'13 + + + start0 + 8: + Y'20 + Y'21 + Y'22 + Y'23 + + + start0 + 12: + Y'30 + Y'31 + Y'32 + Y'33 + + + + start1 + 0: + Cb00 + Cb01 + + + start1 + 2: + Cb10 + Cb11 + + + + start2 + 0: + Cr00 + Cr01 + + + start2 + 2: + Cr10 + Cr11 + + + + + + + + + Color Sample Location. + + + + + + + 01 + 23 + + + 0 + YY + YY + + + + C + C + + + 1 + YY + YY + + + + + + 2 + YY + YY + + + + C + C + + + 3 + YY + YY + + + + + + + + + -- cgit 1.2.3-korg