127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
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/* Header for the .desc file parser in im_global_balance()
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*
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* 1/11/01 JC
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* - cut from global_balance.c
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/* Number of entries in spine of file name hash table.
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*/
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#define SYM_TAB_SIZE (113)
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typedef enum _JoinType JoinType;
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typedef struct _OverlapInfo OverlapInfo;
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typedef struct _JoinNode JoinNode;
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typedef struct _SymbolTable SymbolTable;
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/* Type of a transform function.
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*/
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typedef IMAGE *(*transform_fn)( JoinNode *, void * );
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/* Join type.
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*/
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enum _JoinType {
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JOIN_LR, /* im_lrmerge join */
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JOIN_TB, /* im_tbmerge join */
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JOIN_LRROTSCALE, /* 1st oder lrmerge */
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JOIN_TBROTSCALE, /* 1st oder tbmerge */
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JOIN_CP, /* im_copy operation */
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JOIN_LEAF /* Base file */
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};
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/* An overlap struct. Attach a list of these to each leaf, one for each of
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* the other leaves we touch.
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*/
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struct _OverlapInfo {
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JoinNode *node; /* The base node - we are on this list */
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JoinNode *other; /* Node we overlap with */
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Rect overlap; /* The overlap area */
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DOUBLEMASK *nstats; /* Node's stats for overlap area */
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DOUBLEMASK *ostats; /* Other's stats for overlap area */
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};
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/* Struct for a join node.
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*/
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struct _JoinNode {
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char *name; /* This file name */
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JoinType type; /* What kind of join */
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SymbolTable *st; /* Symbol table we are on */
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int dirty; /* Used for circularity detection */
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/* Params from join line in .desc file.
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*/
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double a, b;
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double dx, dy;
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int mwidth;
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/* Cumulative transform for this node. What our parents do to us.
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* cumtrn.area is position and size of us, thistrn.area is pos and
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* size of arg2.
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*/
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Transformation cumtrn;
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/* X-tras for LR/TB. thistrn is what we do to arg2.
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*/
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JoinNode *arg1; /* Left or up thing to join */
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JoinNode *arg2; /* Right or down thing to join */
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Transformation thistrn; /* Transformation for arg2 */
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/* Special for leaves: all the join_nodes we overlap with, the
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* IMAGE for that file, and the index.
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*/
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GSList *overlaps;
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IMAGE *im;
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IMAGE *trnim; /* Transformed image .. used in 2nd pass */
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int index;
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};
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/* We need to keep a table of JoinNode, indexed by file name. Hash into one
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* of these from the name to get a pointer to the base of a list of JoinNode
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* which hash to that offset.
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*/
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struct _SymbolTable {
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GSList **table; /* Ptr to base of hash table */
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int sz; /* Size of hash table */
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IMAGE *im; /* Malloc relative to this */
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int novl; /* Number of unique overlaps */
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int nim; /* Number of leaf images */
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int njoin; /* Number of join nodes */
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JoinNode *root; /* Root of join tree */
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JoinNode *leaf; /* Leaf nominated to be 1.000 */
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double *fac; /* Correction factors */
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};
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IMAGE *im__global_open_image( SymbolTable *st, char *name );
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SymbolTable *im__build_symtab( IMAGE *out, int sz );
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int im__parse_desc( SymbolTable *st, IMAGE *in );
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void *im__map_table( SymbolTable *st, void *(*fn)(), void *a, void *b );
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int im__build_mosaic( SymbolTable *st,
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IMAGE *out, transform_fn tfn, void * );
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