Mercurial > hg > xemacs-beta
view src/imgproc.h @ 5303:4c4085177ca5
Fix some bugs in fns.c, discovered in passing while doing other work.
2010-11-14 Aidan Kehoe <kehoea@parhasard.net>
* fns.c (Fnreverse):
Check that non-list sequences are writable from Lisp before
modifying them. (There's an argument that we should do this for
list sequences too, but for the moment other code (e.g. #'setcar)
doesn't.)
(mapcarX): Initialise lisp_vals_staging, lisp_vals_type
explicitly, for the sake of compile warnings. Check if
lisp_vals_staging is non-NULL when deciding whether to replace a
string's range.
(Fsome): Cross-reference to #'find-if in the doc string for this
function.
(Freduce): GCPRO accum in this function, when a key argument is
specicified it can be silently garbage-collected. When deciding
whether to iterate across a string, check whether the cursor
exceeds the byte len; while iterating, increment an integer
counter. Don't ABORT() if check_sequence_range() returns when
handed a suspicious sequence; it is legal to supply the length of
SEQUENCE as the :end keyword value, and this will provoke our
suspicions, legitimately enough. (Problems with this function
revealed by Paul Dietz' ANSI test suite, thank you Paul Dietz.)
(Freplace): Check list sequence lengths using the arguments, not
the conses we're currently looking at, thank you Paul Dietz.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 14 Nov 2010 14:54:09 +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_ */