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/* sane - Scanner Access Now Easy.
Copyright (C) 2009-2012 stef.dev@free.fr
This program 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 2 of the
License, or (at your option) any later version.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file p5.h
* @brief Declaration of high level structures used by the p5 backend.
*
* The structures and functions declared here are used to do the deal with
* the SANE API.
*/
#ifndef P5_H
#define P5_H
#include "../include/sane/config.h"
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#include "../include/sane/sane.h"
#include "../include/sane/saneopts.h"
#include "../include/sane/sanei_config.h"
#include "../include/sane/sanei_backend.h"
/**< macro to enable an option */
#define ENABLE(OPTION) session->options[OPTION].descriptor.cap &= ~SANE_CAP_INACTIVE
/**< macro to disable an option */
#define DISABLE(OPTION) session->options[OPTION].descriptor.cap |= SANE_CAP_INACTIVE
/** macro to test is an option is active */
#define IS_ACTIVE(OPTION) (((s->opt[OPTION].cap) & SANE_CAP_INACTIVE) == 0)
/**< name of the configuration file */
#define P5_CONFIG_FILE "p5.conf"
/**< macro to define texts that should translated */
#ifndef SANE_I18N
#define SANE_I18N(text) text
#endif
/** color mode names
*/
/* @{ */
#define COLOR_MODE "Color"
#define GRAY_MODE "Gray"
#define LINEART_MODE "Lineart"
/* @} */
#include "p5_device.h"
/**
* List of all SANE options available for the frontend. Given a specific
* device, some options may be set to inactive when the scanner model is
* detected. The default values and the ranges they belong maybe also model
* dependent.
*/
enum P5_Options
{
OPT_NUM_OPTS = 0, /** first enum which must be zero */
/** @name standard options group
*/
/* @{ */
OPT_STANDARD_GROUP,
OPT_MODE, /** set the mode: color, grey levels or lineart */
OPT_PREVIEW, /** set up for preview */
OPT_RESOLUTION, /** set scan's resolution */
/* @} */
/** @name geometry group
* geometry related options
*/
/* @{ */
OPT_GEOMETRY_GROUP, /** group of options defining the position and size of the scanned area */
OPT_TL_X, /** top-left x of the scanned area*/
OPT_TL_Y, /** top-left y of the scanned area*/
OPT_BR_X, /** bottom-right x of the scanned area*/
OPT_BR_Y, /** bottom-right y of the scanned area*/
/* @} */
/** @name sensor group
* detectors group
*/
/* @{ */
OPT_SENSOR_GROUP,
OPT_PAGE_LOADED_SW,
OPT_NEED_CALIBRATION_SW,
/* @} */
/** @name button group
* buttons group
*/
/* @{ */
OPT_BUTTON_GROUP,
OPT_CALIBRATE,
OPT_CLEAR_CALIBRATION,
/* @} */
/** @name option list terminator
* must come last so it can be used for array and list size
*/
NUM_OPTIONS
};
/**
* Contains one SANE option description and its value.
*/
typedef struct P5_Option
{
SANE_Option_Descriptor descriptor; /** option description */
Option_Value value; /** option value */
} P5_Option;
/**
* Frontend session. This struct holds information useful for
* the functions defined in SANE's standard. Information closer
* to the hardware are in the P5_Device structure. There is
* as many session structure than frontends using the backend.
*/
typedef struct P5_Session
{
/**
* Point to the next session in a linked list
*/
struct P5_Session *next;
/**
* low-level device object used by the session
*/
P5_Device *dev;
/**
* array of possible options and their values for the backend
*/
P5_Option options[NUM_OPTIONS];
/**
* SANE_True if a scan is in progress, ie sane_start has been called.
* Stay SANE_True until sane_cancel() is called.
*/
SANE_Bool scanning;
/** @brief non blocking flag
* SANE_TRUE if sane_read are non-blocking, ie returns immediately if there
* is no data available from the scanning device. Modified by sane_set_io_mode()
*/
SANE_Bool non_blocking;
/**
* SANE Parameters describes what the next or current scan will be
* according to the current values of the options
*/
SANE_Parameters params;
/**
* bytes to send to frontend for the scan
*/
SANE_Int to_send;
/**
* bytes currently sent to frontend during the scan
*/
SANE_Int sent;
} P5_Session;
static SANE_Status probe_p5_devices (void);
static P5_Model *probe (const char *devicename);
static SANE_Status config_attach (SANEI_Config * config, const char *devname,
void *data);
static SANE_Status attach_p5 (const char *name, SANEI_Config * config);
static SANE_Status init_options (struct P5_Session *session);
static SANE_Status compute_parameters (struct P5_Session *session);
/* vim: set sw=2 cino=>2se-1sn-1s{s^-1st0(0u0 smarttab expandtab: */
#endif /* not P5_H */
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