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[media] doc-rst: add sh_mobile_ceu_camera crop documentation 

Convert it to ReST and add it to media/v4l-drivers book.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-07-17 19:43:22 -03:00
parent ae9d2873a8
commit 9cbfcd7cf2
2 changed files with 30 additions and 28 deletions
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1
Documentation/media/v4l-drivers/index.rst
View File

@ -34,4 +34,5 @@ License".
pxa_camera pxa_camera
radiotrack radiotrack
saa7134 saa7134
sh_mobile_ceu_camera
zr364xx zr364xx

7
Documentation/media/v4l-drivers/sh_mobile_ceu_camera.rst
View File

@ -1,6 +1,8 @@
Cropping and Scaling algorithm, used in the sh_mobile_ceu_camera driver Cropping and Scaling algorithm, used in the sh_mobile_ceu_camera driver
======================================================================= =======================================================================
Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Terminology Terminology
----------- -----------
@ -12,6 +14,8 @@ combined scales: sensor_scale * host_scale
Generic scaling / cropping scheme Generic scaling / cropping scheme
--------------------------------- ---------------------------------
.. code-block:: none
-1-- -1--
| |
-2-- -\ -2-- -\
@ -134,6 +138,3 @@ Cropping is performed in the following 6 steps:
5. Calculate and apply host scale = (6' - 6) / (4' - 4) 5. Calculate and apply host scale = (6' - 6) / (4' - 4)
6. Calculate and apply host crop: 6 - 7 = (5 - 2) * (6' - 6) / (5' - 5) 6. Calculate and apply host crop: 6 - 7 = (5 - 2) * (6' - 6) / (5' - 5)
--
Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>