From 4266129964b8238526936d723de65b419d8069c6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 31 May 2011 16:27:44 -0300 Subject: [media] DocBook: Move all media docbook stuff into its own directory This patch addresses several issues pointed by Randy Dunlap at changeset ece722c: - In the generated index.html file, "media" is listed first, but it should be listed in alphabetical order, not first. - The generated files are (hidden) in .tmpmedia/ - The link from the top-level index.html file to "media" is to media/index.html, but the file is actually in .tmpmedia/media/index.html - Please build docs with and without using "O=builddir" and test that. - Would it be possible for media to have its own Makefile instead of merging into this one? Due to the way cleandocs target works, I had to rename the media DocBook to media_api, otherwise cleandocs would remove the /media directory. Thanks-to: Randy Dunlap Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/pixfmt-yuv410.xml | 141 ++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 Documentation/DocBook/media/v4l/pixfmt-yuv410.xml (limited to 'Documentation/DocBook/media/v4l/pixfmt-yuv410.xml') diff --git a/Documentation/DocBook/media/v4l/pixfmt-yuv410.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv410.xml new file mode 100644 index 0000000..8eb4a19 --- /dev/null +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv410.xml @@ -0,0 +1,141 @@ + + + V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9') + &manvol; + + + V4L2_PIX_FMT_YVU410 + V4L2_PIX_FMT_YUV410 + Planar formats with ¼ horizontal and +vertical chroma resolution, also known as YUV 4:1:0 + + + Description + + These are planar formats, 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. For +V4L2_PIX_FMT_YVU410, the Cr plane immediately +follows the Y plane in memory. The Cr plane is ¼ the width and +¼ the height of the Y plane (and of the image). Each Cr belongs +to 16 pixels, a four-by-four square of the image. Following the Cr +plane is the Cb plane, just like the Cr plane. +V4L2_PIX_FMT_YUV410 is the same, except the Cb +plane comes first, then the Cr plane. + + If the Y plane has pad bytes after each row, then the Cr +and Cb planes have ¼ as many pad bytes after their rows. In +other words, four Cx rows (including padding) are exactly as long as +one Y row (including padding). + + + <constant>V4L2_PIX_FMT_YVU410</constant> 4 × 4 +pixel image + + + Byte Order. + Each cell is one byte. + + + + + + start + 0: + Y'00 + Y'01 + Y'02 + Y'03 + + + start + 4: + Y'10 + Y'11 + Y'12 + Y'13 + + + start + 8: + Y'20 + Y'21 + Y'22 + Y'23 + + + start + 12: + Y'30 + Y'31 + Y'32 + Y'33 + + + start + 16: + Cr00 + + + start + 17: + Cb00 + + + + + + + + + Color Sample Location. + + + + + + + 01 + 23 + + + 0 + YY + YY + + + + + + 1 + YY + YY + + + + C + + + + 2 + YY + YY + + + + + + 3 + YY + YY + + + + + + + + + + + -- cgit v1.1