#pragma warn -use
static char 	*sccsid = "@(#)TIFF/tif_dumpmode.c 1.12, Copyright (c) Sam Leffler, Dieter Linde, "__DATE__;
#pragma warn .use
/*
 * Copyright (c) 1988, 1990 by Sam Leffler, Oct 8 1990
 * All rights reserved.
 *
 * This file is provided for unrestricted use provided that this legend is included on all tape media and as a part of the
 * software program in whole or part.  Users may copy, modify or distribute this file at will.
 *
 * TIFF Library.
 *
 * "Null" Compression Algorithm Support.
 */
#include <stdio.h>
#include <assert.h>
#include "tiffio.h"

/****************************************************************************
 * Encode a scanline of pixels.
 */
static int
DumpModeEncode(
       	register TIFF	*tif,
        u_char 		*buf,
        int 		cc
        )
{
        if (tif->tif_rawcc + cc > tif->tif_rawdatasize)
                if (!TIFFFlushData(tif))
                        return(-1);
        bcopy(buf, tif->tif_rawcp, cc);
        if (tif->tif_flags & TIFF_SWAB) {
                switch (tif->tif_dir.td_bitspersample) {
	                case 16:
        	                assert((cc & 3) == 0);
                	        TIFFSwabArrayOfShort((u_short *)tif->tif_rawcp, cc / 2);
                        	break;
	                case 32:
        	                assert((cc & 15) == 0);
                	        TIFFSwabArrayOfLong((u_long *)tif->tif_rawcp, cc / 4);
                        	break;
                }
        }
        tif->tif_rawcp += cc;
        tif->tif_rawcc += cc;
        return(1);
}

/****************************************************************************
 * Decode a scanline of pixels.
 */
static int
DumpModeDecode(
        register TIFF 	*tif,
        u_char 		*buf,
        int 		cc
        )
{
        if (tif->tif_rawcc < cc) {
                TIFFError(tif->tif_name, "DumpModeDecode: Not enough data for scanline %d", tif->tif_row);
                return(0);
        }
        bcopy(tif->tif_rawcp, buf, cc);
        if (tif->tif_flags & TIFF_SWAB) {
                switch (tif->tif_dir.td_bitspersample) {
	                case 16:
        	                assert((cc & 3) == 0);
                	        TIFFSwabArrayOfShort((u_short *)buf, cc / 2);
	                        break;
        	        case 32:
                	        assert((cc & 15) == 0);
                        	TIFFSwabArrayOfLong((u_long *)buf, cc / 4);
	                        break;
                }
        }
        tif->tif_rawcp += cc;
        tif->tif_rawcc -= cc;
        return(1);
}

/****************************************************************************
 * Seek forwards nrows in the current strip.
 */
static int
DumpModeSeek(
        register TIFF	*tif,
        long 		nrows
        )
{
        tif->tif_rawcp += nrows * tif->tif_scanlinesize;
        tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
        return(1);
}

/****************************************************************************
 * Initialize dump mode.
 */
int
TIFFInitDumpMode(
	register TIFF	*tif
	)
{
        tif->tif_decoderow = DumpModeDecode;
        tif->tif_encoderow = DumpModeEncode;
        tif->tif_seek = DumpModeSeek;
        return(1);
}