limits.h

/*
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SCCSID @(#)limits.h	1.1 10/04/99
*/
/* SCCShid @(#)limits.h (limits.h) 1.4 */

#if !defined(limits_h)

#define limits_h

/*
* The transform block size.  IMPORTANT NOTE:  If changed to another number
* EXTENSIVE re-thinking of the transform compressor is necessary.  MANY
* calculations will not fit in their allocated word sizes (including the
* transform coefficients), the "unwound" loops will not execute the correct
* number of times, etc.  This is defined here so SOME dependencies can use
* a common definition.
*/
#define BLOCKSIZE	 256
/* The log (base 2) of the block size (used to avoid calculation overflow) */
#define LOGBLOCKSIZE	   8
/* The size of the image block in the x and y direction */
#define BLOCKDIMENSION	  16

/*
* The maximum number of blocks in an image (and its log base 2).  IMPORTANT
* NOTE:  If changed to another number SUBSTANTIAL re-thinking of the
* transform compressor is necessary.  SEVERAL calculations will not fit
* in their allocated word sizes, etc.  This is defined here so SOME
* dependencies can use a common definition.
*/
#define MAXBLOCKS	1024
#define LOGMAXBLOCKS	  10

/*
* The maximum number of ranking groups (and its log base 2).  IMPORTANT
* NOTE:  If changed to another number re-thinking of the transform
* compressor is necessary.  This is defined here so SEVERAL dependencies
* can use a common definition.
*/
#define MAXGROUPS	   8
#define LOGMAXGROUPS	   3

/*
* The maximum number of encoding tables (and its log base 2).  IMPORTANT
* NOTE:  If changed to another number re-thinking of the transform
* compressor is necessary.  This is defined here so SEVERAL dependencies
* can use a common definition.
*/
#define MAXCODES	   8
#define LOGMAXCODES	   3

/*
* The maximum size of an entry in the weighting table for the "AC energy"
* calculation (and its log base 2).  IMPORTANT NOTE:  If changed to another
* number re-thinking of the transform compressor is necessary.  This is
* defined here so SEVERAL dependencies can use a common definition.
*/
#define MAXWEIGHT	  32
#define LOGMAXWEIGHT	   5

#endif