Mercurial > hg > xemacs-beta
view src/imgproc.h @ 1298:1b4bc72f433e
[xemacs-hg @ 2003-02-14 12:05:06 by ben]
speedups to build process
autoload.el: Factor out common code in generate-{c-,}file-autoloads-1 into new
function generate-autoload-ish-1. \(I was originally going to use
this for custom as well but ended up thinking better of it.)
cus-dep.el: Cache the old computed values in custom-load.el and reuse them as
necessary, to speed up running cus-dep (which would take 25-30
seconds to do all files in lisp/*, lisp/*/* on my Pentium III
700). Use `message' not `princ' to get correct newline behavior.
Output messages showing each file we do actually process.
update-elc-2.el: Rewrite algorithm to be much faster -- cache calls to
directory-files and don't make needless calls to file-exists-p,
file-directory-p because they're way way slow.
Autoload early and only when update-elc has told us to.
update-elc.el: If no files need byte compilation, signal to update-elc-2 to do
any necessary autoload updating (using the file REBUILD_AUTOLOADS)
rather than doing it ourselves, which would be way slow. Ignore
updates to custom-load.el and auto-autoloads.el when checking to
see whether autoloads need updating. Optimize out many
unnecessary calls to file-exists-p to speed it up somewhat. (####
The remaining time is 50% or more in locate-file; this is
presumably because, even though it has a cache, it's still
statting each file to determine it's actually there. By calling
directory-files ourselves, building a tree, and then looking in
that tree, we could drastically shorten the time needed to do the
locate operation.)
| author | ben |
|---|---|
| date | Fri, 14 Feb 2003 12:05:07 +0000 |
| parents | 8de8e3f6228a |
| children | 2aa9cd456ae7 |
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/* Image processing aux functions header file Copyright (C) 1998 Jareth Hein This file is a part of XEmacs XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef INCLUDED_imgproc_h_ #define INCLUDED_imgproc_h_ /* Synched up with: Not in FSF. */ /* Original author: Jareth Hein */ #define MAX_CMAP_SIZE 256 #define COLOR_DEPTH 8 #define MAX_COLOR 256 #define B_DEPTH 5 /* # bits/pixel to use */ #define B_LEN (1L<<B_DEPTH) #define C_DEPTH 2 #define C_LEN (1L<<C_DEPTH) /* # cells/color to use */ #define COLOR_SHIFT (COLOR_DEPTH-B_DEPTH) typedef struct colorbox { struct colorbox *next, *prev; int rmin, rmax; int gmin, gmax; int bmin, bmax; int total; } Colorbox; typedef struct { int num_ents; int entries[MAX_CMAP_SIZE][2]; } C_cell; typedef struct { unsigned short rm[MAX_CMAP_SIZE], gm[MAX_CMAP_SIZE], bm[MAX_CMAP_SIZE]; /* map values */ int um[MAX_CMAP_SIZE]; /* usage counts for each mapentry */ int histogram[B_LEN][B_LEN][B_LEN]; int num_active_colors; Colorbox *freeboxes; /* used and freed internally */ Colorbox *usedboxes; /* used and freed internally */ C_cell **ColorCells; /* used and freed internally */ } quant_table; #define QUANT_GET_COLOR(qt,r,g,b) (qt->histogram[r>>COLOR_SHIFT][g>>COLOR_SHIFT][b>>COLOR_SHIFT]) quant_table *build_EImage_quantable(unsigned char *eimage, int width, int height, int num_colors); #endif /* INCLUDED_imgproc_h_ */