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+/*
+ * epsonds.c - Epson ESC/I-2 driver.
+ *
+ * Copyright (C) 2015 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This file is part of the SANE package.
+ *
+ * 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, version 2.
+ */
+
+#ifndef epsonds_h
+#define epsonds_h
+
+#undef BACKEND_NAME
+#define BACKEND_NAME epsonds
+#define DEBUG_NOT_STATIC
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef NEED_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#include <string.h> /* for memset and memcpy */
+#include <stdio.h>
+
+#include "sane/sane.h"
+#include "sane/sanei_backend.h"
+#include "sane/sanei_debug.h"
+#include "sane/sanei_usb.h"
+#include "sane/sanei_jpeg.h"
+
+#ifdef __GNUC__
+#define __func__ __FUNCTION__
+#else
+#define __func__ "(undef)"
+/* I cast my vote for C99... :) */
+#endif
+
+#define EPSONDS_CONFIG_FILE "epsonds.conf"
+
+#ifndef PATH_MAX
+#define PATH_MAX (1024)
+#endif
+
+#ifndef XtNumber
+#define XtNumber(x) (sizeof(x) / sizeof(x[0]))
+#define XtOffset(p_type, field) ((size_t)&(((p_type)NULL)->field))
+#define XtOffsetOf(s_type, field) XtOffset(s_type*, field)
+#endif
+
+#define ACK 0x06
+#define NAK 0x15
+#define FS 0x1C
+
+#define FBF_STR SANE_I18N("Flatbed")
+#define TPU_STR SANE_I18N("Transparency Unit")
+#define ADF_STR SANE_I18N("Automatic Document Feeder")
+
+enum {
+ OPT_NUM_OPTS = 0,
+ OPT_MODE_GROUP,
+ OPT_MODE,
+ OPT_DEPTH,
+ OPT_RESOLUTION,
+ OPT_GEOMETRY_GROUP,
+ OPT_TL_X,
+ OPT_TL_Y,
+ OPT_BR_X,
+ OPT_BR_Y,
+ OPT_EQU_GROUP,
+ OPT_SOURCE,
+ OPT_EJECT,
+ OPT_LOAD,
+ OPT_ADF_MODE,
+ OPT_ADF_SKEW,
+ NUM_OPTIONS
+};
+
+typedef enum
+{ /* hardware connection to the scanner */
+ SANE_EPSONDS_NODEV, /* default, no HW specified yet */
+ SANE_EPSONDS_USB, /* USB interface */
+ SANE_EPSONDS_NET /* network interface (unsupported)*/
+} epsonds_conn_type;
+
+/* hardware description */
+
+struct epsonds_device
+{
+ struct epsonds_device *next;
+
+ epsonds_conn_type connection;
+
+ char *name;
+ char *model;
+
+ unsigned int model_id;
+
+ SANE_Device sane;
+ SANE_Range *x_range;
+ SANE_Range *y_range;
+ SANE_Range dpi_range;
+ SANE_Byte alignment;
+
+
+ SANE_Int *res_list; /* list of resolutions */
+ SANE_Int *depth_list;
+ SANE_Int max_depth; /* max. color depth */
+
+ SANE_Bool has_raw; /* supports RAW format */
+
+ SANE_Bool has_fb; /* flatbed */
+ SANE_Range fbf_x_range; /* x range */
+ SANE_Range fbf_y_range; /* y range */
+ SANE_Byte fbf_alignment; /* left, center, right */
+ SANE_Bool fbf_has_skew; /* supports skew correction */
+
+ SANE_Bool has_adf; /* adf */
+ SANE_Range adf_x_range; /* x range */
+ SANE_Range adf_y_range; /* y range */
+ SANE_Bool adf_is_duplex; /* supports duplex mode */
+ SANE_Bool adf_singlepass; /* supports single pass duplex */
+ SANE_Bool adf_has_skew; /* supports skew correction */
+ SANE_Bool adf_has_load; /* supports load command */
+ SANE_Bool adf_has_eject; /* supports eject command */
+ SANE_Byte adf_alignment; /* left, center, right */
+
+ SANE_Bool has_tpu; /* tpu */
+ SANE_Range tpu_x_range; /* transparency unit x range */
+ SANE_Range tpu_y_range; /* transparency unit y range */
+};
+
+typedef struct epsonds_device epsonds_device;
+
+typedef struct ring_buffer
+{
+ SANE_Byte *ring, *wp, *rp, *end;
+ SANE_Int fill, size;
+
+} ring_buffer;
+
+/* an instance of a scanner */
+
+struct epsonds_scanner
+{
+ struct epsonds_scanner *next;
+ struct epsonds_device *hw;
+
+ int fd;
+
+ SANE_Option_Descriptor opt[NUM_OPTIONS];
+ Option_Value val[NUM_OPTIONS];
+ SANE_Parameters params;
+
+ SANE_Byte *buf, *line_buffer;
+ ring_buffer *current, front, back;
+
+ SANE_Bool eof, scanning, canceling, locked, backside, mode_jpeg;
+
+ SANE_Int left, top, pages, dummy;
+
+ /* jpeg stuff */
+
+ djpeg_dest_ptr jdst;
+ struct jpeg_decompress_struct jpeg_cinfo;
+ struct jpeg_error_mgr jpeg_err;
+ SANE_Bool jpeg_header_seen;
+};
+
+typedef struct epsonds_scanner epsonds_scanner;
+
+struct mode_param
+{
+ int color;
+ int flags;
+ int dropout_mask;
+ int depth;
+};
+
+enum {
+ MODE_BINARY, MODE_GRAY, MODE_COLOR
+};
+
+#endif