kopia lustrzana https://gitlab.com/sane-project/backends
107 wiersze
3.5 KiB
C
107 wiersze
3.5 KiB
C
/* sane - Scanner Access Now Easy.
|
|
|
|
Copyright (C) 2020 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
unsigned char *
|
|
escl_crop_surface(capabilities_t *scanner,
|
|
unsigned char *surface,
|
|
int w,
|
|
int h,
|
|
int bps,
|
|
int *width,
|
|
int *height)
|
|
{
|
|
int x_off = 0, x = 0;
|
|
int real_w = 0;
|
|
int y_off = 0, y = 0;
|
|
int real_h = 0;
|
|
unsigned char *surface_crop = NULL;
|
|
/*
|
|
DBG( 1, "Escl Image Crop\n");
|
|
if (w < (int)scanner->caps[scanner->source].width)
|
|
scanner->caps[scanner->source].width = w;
|
|
if (scanner->caps[scanner->source].pos_x < 0)
|
|
scanner->caps[scanner->source].pos_x = 0;
|
|
|
|
if (h < (int)scanner->caps[scanner->source].height)
|
|
scanner->caps[scanner->source].height = h;
|
|
if (scanner->caps[scanner->source].pos_x < 0)
|
|
scanner->caps[scanner->source].pos_x = 0;
|
|
|
|
DBG( 1, "Escl Image Crop [%dx%d|%dx%d]\n", scanner->caps[scanner->source].pos_x, scanner->caps[scanner->source].pos_y,
|
|
scanner->caps[scanner->source].width, scanner->caps[scanner->source].height);
|
|
x_off = scanner->caps[scanner->source].pos_x;
|
|
if (x_off >= scanner->caps[scanner->source].width) {
|
|
real_w = scanner->caps[scanner->source].width;
|
|
x_off = 0;
|
|
}
|
|
else
|
|
real_w = scanner->caps[scanner->source].width - x_off;
|
|
y_off = scanner->caps[scanner->source].pos_y;
|
|
if(y_off >= scanner->caps[scanner->source].height) {
|
|
real_h = scanner->caps[scanner->source].height;
|
|
y_off = 0;
|
|
}
|
|
else
|
|
real_h = scanner->caps[scanner->source].height - y_off;
|
|
*/
|
|
*width = w; //real_w;
|
|
*height = h; //real_h;
|
|
DBG( 1, "Escl Image Crop [%dx%d]\n", *width, *height);
|
|
/*
|
|
if (x_off > 0 || real_w < scanner->caps[scanner->source].width ||
|
|
y_off > 0 || real_h < scanner->caps[scanner->source].height) {
|
|
surface_crop = (unsigned char *)malloc (sizeof (unsigned char) * real_w
|
|
* real_h * bps);
|
|
if(!surface_crop) {
|
|
DBG( 1, "Escl Crop : Surface_crop Memory allocation problem\n");
|
|
free(surface);
|
|
surface = NULL;
|
|
goto finish;
|
|
}
|
|
for (y = 0; y < real_h; y++)
|
|
{
|
|
for (x = 0; x < real_w; x++)
|
|
{
|
|
surface_crop[y * real_w + x] = surface[(y + y_off) * w + x + x_off];
|
|
}
|
|
}
|
|
free(surface);
|
|
surface = surface_crop;
|
|
}
|
|
*/
|
|
// we don't need row pointers anymore
|
|
scanner->img_data = surface;
|
|
scanner->img_size = (int)(w * h * bps);
|
|
// scanner->img_size = (int)(real_w * real_h * bps);
|
|
scanner->img_read = 0;
|
|
finish:
|
|
return surface;
|
|
}
|