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/* sane - Scanner Access Now Easy.
Copyright (C) 2019 Touboul Nathane
Copyright (C) 2019 Thierry HUCHARD <thierry@ordissimo.com>
This file is part of the SANE package.
SANE 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 3 of the License, or (at your
option) any later version.
SANE 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 sane; see the file COPYING. If not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
This file implements a SANE backend for eSCL scanners. */
#define DEBUG_DECLARE_ONLY
#include "../include/sane/config.h"
#include "escl.h"
#include "../include/sane/sanei.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if(defined HAVE_TIFFIO_H)
#include <tiffio.h>
#endif
#include <setjmp.h>
#if(defined HAVE_TIFFIO_H)
/**
* \fn SANE_Status escl_sane_decompressor(escl_sane_t *handler)
* \brief Function that aims to decompress the png image to SANE be able to read the image.
* This function is called in the "sane_read" function.
*
* \return SANE_STATUS_GOOD (if everything is OK, otherwise, SANE_STATUS_NO_MEM/SANE_STATUS_INVAL)
*/
SANE_Status
get_TIFF_data(capabilities_t *scanner, int *w, int *h, int *components)
{
TIFF* tif = NULL;
uint32 width = 0; /* largeur */
uint32 height = 0; /* hauteur */
unsigned char *raster = NULL; /* données de l'image */
int bps = 4;
uint32 npixels = 0;
lseek(fileno(scanner->tmp), 0, SEEK_SET);
tif = TIFFFdOpen(fileno(scanner->tmp), "temp", "r");
if (!tif) {
DBG( 1, "Escl Tiff : Can not open, or not a TIFF file.\n");
if (scanner->tmp) {
fclose(scanner->tmp);
scanner->tmp = NULL;
}
return (SANE_STATUS_INVAL);
}
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
npixels = width * height;
raster = (unsigned char*) malloc(npixels * sizeof (uint32));
if (raster != NULL)
{
DBG( 1, "Escl Tiff : Memory allocation problem.\n");
if (scanner->tmp) {
fclose(scanner->tmp);
scanner->tmp = NULL;
}
return (SANE_STATUS_INVAL);
}
if (!TIFFReadRGBAImage(tif, width, height, (uint32 *)raster, 0))
{
DBG( 1, "Escl Tiff : Problem reading image data.\n");
if (scanner->tmp) {
fclose(scanner->tmp);
scanner->tmp = NULL;
}
return (SANE_STATUS_INVAL);
}
*w = (int)width;
*h = (int)height;
*components = bps;
// we don't need row pointers anymore
scanner->img_data = raster;
scanner->img_size = (int)(width * height * bps);
scanner->img_read = 0;
TIFFClose(tif);
fclose(scanner->tmp);
scanner->tmp = NULL;
return (SANE_STATUS_GOOD);
}
#else
SANE_Status
get_TIFF_data(capabilities_t __sane_unused__ *scanner,
int __sane_unused__ *w,
int __sane_unused__ *h,
int __sane_unused__ *bps)
{
return (SANE_STATUS_INVAL);
}
#endif
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