73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* pnm.h
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*
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* Copyright (C) 1995, Erik Corry (ehcorry@inet.uni-c.dk)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU 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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*
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef PNM_H_INCLUDED
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#define PNM_H_INCLUDED 1
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#include "image_format.h"
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/*
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* pnmState
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*/
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typedef struct pnm_state
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{
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int state; /* state of PNM reader */
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FormatLineProc lineProc; /* line callback */
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void *closure; /* closure for callback */
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Image *image;
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int pos; /* current read position */
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int ypos; /* current line */
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int xpos; /* current pixel */
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byte *imagepos; /* current posn. in output */
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bool mac_newlines; /* CR or LFCR for newlines */
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bool raw; /* raw file */
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byte *input_table;
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bool free_input_table;
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Intensity cmap[3][256]; /* colormap */
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int max_val;
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int pnm_class;
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int width;
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} pnmState;
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/*
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* state of PNM reader
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*/
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#define PNM_READ_MAGIC 1
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#define PNM_READ_WIDTH 2
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#define PNM_READ_HEIGHT 3
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#define PNM_READ_MAX_VAL 4
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#define PNM_READ_PRE_RAW_NEWLINE 5
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#define PNM_READ_RAW 6
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#define PNM_READ_ASC 7
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#define PNM_READ_ASC_BIT 8
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#define PNM_FINISHED 0
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/*
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* return values from pnm processing fns
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*/
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#define PNM_ERROR 0
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#define PNM_SUCCESS 1
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#define PNM_NEED_DATA 2
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#endif
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