media DocBook: fix NV16M description.
Subsystems (2)
PATCH 1/1 media DocBook: fix NV16M description.
The NV16M description contained some copy-and-paste text from NV12M, suggesting that this format is a 4:2:0 format when it really is a 4:2:2 format.
Fixed the text.
--- Documentation/DocBook/media/v4l/pixfmt-nv16m.xml | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
Documentation/DocBook/media/v4l/pixfmt-nv16m.xml +4 -5
@@ -12,18 +12,17 @@ <refsect1> <title>Description</title> - <para>This is a multi-planar, two-plane version of the YUV 4:2:0 format. + <para>This is a multi-planar, two-plane version of the YUV 4:2:2 format. The three components are separated into two sub-images or planes. <constant>V4L2_PIX_FMT_NV16M</constant> differs from <constant>V4L2_PIX_FMT_NV16 </constant> in that the two planes are non-contiguous in memory, i.e. the chroma -plane does not necessarily immediately follows the luma plane. +plane does not necessarily immediately follow the luma plane. The luminance data occupies the first plane. The Y plane has one byte per pixel. In the second plane there is chrominance data with alternating chroma samples. The CbCr plane is the same width and height, in bytes, as the Y plane. -Each CbCr pair belongs to four pixels. For example, +Each CbCr pair belongs to two pixels. For example, Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to -Y'<subscript>00</subscript>, Y'<subscript>01</subscript>, -Y'<subscript>10</subscript>, Y'<subscript>11</subscript>. +Y'<subscript>00</subscript>, Y'<subscript>01</subscript>. <constant>V4L2_PIX_FMT_NV61M</constant> is the same as <constant>V4L2_PIX_FMT_NV16M</constant> except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte.</para>
Signature · 1 line
1.9.rc1
Hi Hans,
Thank you for the patch.
Quoted 7 lines · On Sunday 02 March 2014 10:43:12 Hans Verkuil wrote:
The NV16M description contained some copy-and-paste text from NV12M, suggesting that this format is a 4:2:0 format when it really is a 4:2:2 format.
Fixed the text.
Signed-off-by Hans Verkuil <[email protected]>
Quoted 33 lines
--- Documentation/DocBook/media/v4l/pixfmt-nv16m.xml | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)(quoted diff) +0
-0
b/Documentation/DocBook/media/v4l/pixfmt-nv16m.xmlindex c51d5a4..fb2b5e3 100644Documentation/DocBook/media/v4l/pixfmt-nv16m.xml +1
-1@@ -12,18 +12,17 @@ <refsect1> <title>Description</title> - <para>This is a multi-planar, two-plane version of the YUV 4:2:0 format. + <para>This is a multi-planar, two-plane version of the YUV 4:2:2 format. The three components are separated into two sub-images or planes. <constant>V4L2_PIX_FMT_NV16M</constant> differs from<constant>V4L2_PIX_FMT_NV16 </constant> in that the two planes are non-contiguous in memory, i.e. the chroma -plane does not necessarily immediately follows the luma plane.
+plane does not necessarily immediately follow the luma plane.
The luminance data occupies the first plane. The Y plane has one byte per
pixel. In the second plane there is chrominance data with alternating chroma samples. The CbCr plane is the same width and height, in bytes, as the Y plane. -Each CbCr pair belongs to four pixels. For example,Documentation/DocBook/media/v4l/pixfmt-nv16m.xml +2
-2+Each CbCr pair belongs to two pixels. For example, Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to -Y'<subscript>00</subscript>, Y'<subscript>01</subscript>, -Y'<subscript>10</subscript>, Y'<subscript>11</subscript>. +Y'<subscript>00</subscript>, Y'<subscript>01</subscript>. <constant>V4L2_PIX_FMT_NV61M</constant> is the same as<constant>V4L2_PIX_FMT_NV16M</constant> except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte.</para>
Signature · 3 lines
Regards, Laurent Pinchart