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view src/imgproc.h @ 4844:91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
dynarr.c: Add comment explaining Dynarr_largest() use.
dynarr.c: In Dynarr_insert_many(), don't call Dynarr_resize() unless we
actually need to resize, and note that an assert() that we are
inserting at or below the current end could be wrong if code
wants to access stuff between `len' and `largest'.
dynarr.c: Don't just Dynarr_resize() to the right size; instead use
Dynarr_reset() then Dynarr_add_many(), so that the 'len' and
'largest' and such get set properly.
dynarr.c, faces.c, gutter.c, lisp.h, lread.c, lrecord.h, redisplay-output.c, redisplay.c: Rename Dynarr member 'cur' to 'len' since it's the length of
the dynarr, not really a pointer to a "current insertion point".
Use type_checking_assert() instead of just assert() in some places.
Add additional assertions (Dynarr_verify*()) to check that we're
being given positions within range. Use them in Dynarr_at,
Dynarr_atp, etc. New Dynarr_atp_allow_end() for retrieving a
pointer to a position that might be the element past the last one.
New Dynarr_past_lastp() to retrieve a pointer to the position
past the last one, using Dynarr_atp_allow_end(). Change code
appropriately to use it.
Rename Dynarr_end() to Dynarr_lastp() (pointer to the last
element) for clarity, and change code appropriately to use it.
Change code appropriately to use Dynarr_begin().
Rewrite Dynarr_add_many(). New version can accept a NULL pointer
to mean "reserve space but don't put anything in it". Used by
stack_like_malloc().
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Wed, 13 Jan 2010 04:07:42 -0600 |
| 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_ */