From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: AndrĂ© Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml | 153 +++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml (limited to 'Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml') diff --git a/Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml new file mode 100644 index 000000000..4ce6463fe --- /dev/null +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv422p.xml @@ -0,0 +1,153 @@ + + + V4L2_PIX_FMT_YUV422P ('422P') + &manvol; + + + V4L2_PIX_FMT_YUV422P + Format with ½ horizontal chroma resolution, +also known as YUV 4:2:2. Planar layout as opposed to +V4L2_PIX_FMT_YUYV + + + Description + + This format is not commonly used. This is a planar +version of the YUYV 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 plane immediately follows the Y plane in +memory. The Cb plane is half the width of the Y plane (and of the +image). Each Cb belongs to two pixels. For example, +Cb0 belongs to Y'00, +Y'01. Following the Cb plane is the Cr plane, +just like the Cb plane. + + If the Y plane has pad bytes after each row, then the Cr +and Cb 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). + + + <constant>V4L2_PIX_FMT_YUV422P</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: + Cb00 + Cb01 + + + start + 18: + Cb10 + Cb11 + + + start + 20: + Cb20 + Cb21 + + + start + 22: + Cb30 + Cb31 + + + start + 24: + Cr00 + Cr01 + + + start + 26: + Cr10 + Cr11 + + + start + 28: + Cr20 + Cr21 + + + start + 30: + Cr30 + Cr31 + + + + + + + + + Color Sample Location. + + + + + + + 01 + 23 + + + 0 + YCY + YCY + + + 1 + YCY + YCY + + + 2 + YCY + YCY + + + 3 + YCY + YCY + + + + + + + + + -- cgit v1.2.3-54-g00ecf