bw.cfg

视频601芯片的驱动源码,你可以完全掌控该芯片了,对于其它多媒体芯片的设计具有参考价值

 1.0  0.9  0.8  0.6  0.4  0.3
 1.0  1.0  1.0
 1.0  1.0  1.0

 700.0  200.0  50.0  10.0  3.0  1.0
   1.0    1.2   1.2
   1.3    1.0   1

 70.0 50.0 30.0 10.0  6.0 4.0
  1.0  1.5  1.5
  1.0  1.0  1.0

0.3
0.1
0.101
0.05

------------------------------------------------------------------
Last three numbers:
  Feedback Gain;
  Feedback Scene Detection Threshold;
  Regular (Demo) Scene Detection;

==================================================================

This is the  bin width configuration file.  It  is usefull  mostly for
experimentation and can  be safely deleted  from the  directory -- the
bin width calculator (BWC) does not mind  when it is missing. What the
BWC DOES MIND is when this file has bad values in it. Incorrect values
can easily crash the driver or send it into an infinite loop.
This file might be of value to people interested in experimenting with
BWC or for those interested in special effects, otherwise it is better
left untouched. As with the rest of the software,

THE FILE IS PROVIDED AS IS, AND ANALOG DEVICES ASSUMES NO
RESPONSIBILITY FOR ANY PROBLEMS RESULTING FROM THE USE AND/OR
MODIFICATION OF THIS FILE.

Below is an attempt to explain the semantics of these numbers.

There are three sets of numbers, 12 numbers each. 
Set 1 specifies the minimum bin widths,
Set 2 specifies the maximum bin widths.
Set 3 specifies clipping values.

Each of the sets is used to compute a set of 42 bin widths, one for
	each block in bit stream. 
6 numbers in the first lines refer to the block's level in the wavelet
	transfomr diagram, first number corresponding to the highest 
	frequency (finest scale), the last -- to the lowest frequence
	(the most coarse scale).
3 numbers on the second line refer to the block's color (Y,U,V)
3 numbers on the third line refer to the block's direction (diagonal,
	horizontal or vertical).
To compute the  bin width for a   specific block, one has to  multiply
three numbers from  the set: one  corresponding to block's  level, one
corresponding to its direction and one corresponding to its color. The
exceptions are the blocks at level 6, which have no direction.

The BWC   computes bin  widths by  interpolation   between minimum and
maximum set. It then takes the result and "clips"  it according to the
clipping level set  of bin widths. Clipping  means setting to 0 values
which go beyond the limit. In  particular, setting clipping level to 0
means that the corresponding bin width  will always be  0 too, and the
corresponding block will be  empty. This can  be  used to  create some
special effects, like edge extraction.

Note:  all white space is treated  as separators only.  The above line
format is used for readability by humans, while being ignored ot BWC.