options.c 7.87 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
/*
 * Copyright 2009 Jeremy White <jwhite@codeweavers.com> for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"

#include <stdlib.h>
#include "twain.h"
#include "sane_i.h"
#include "wine/debug.h"

#ifdef SONAME_LIBSANE
27 28
static SANE_Status sane_find_option(SANE_Handle h, const char *option_name,
        const SANE_Option_Descriptor **opt_p, int *optno, SANE_Value_Type type)
29 30 31 32 33 34
{
    SANE_Status rc;
    SANE_Int optcount;
    const SANE_Option_Descriptor *opt;
    int i;

35 36 37 38 39 40 41
    /* Debian, in 32_net_backend_standard_fix.dpatch,
     *  forces a frontend (that's us) to reload options
     *  manually by invoking get_option_descriptor. */
    opt = psane_get_option_descriptor(h, 0);
    if (! opt)
        return SANE_STATUS_EOF;

42 43 44 45 46 47 48 49
    rc = psane_control_option(h, 0, SANE_ACTION_GET_VALUE, &optcount, NULL);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    for (i = 1; i < optcount; i++)
    {
        opt = psane_get_option_descriptor(h, i);
        if (opt && (opt->name && strcmp(opt->name, option_name) == 0) &&
50 51 52 53 54 55
               opt->type == type)
        {
            *opt_p = opt;
            *optno = i;
            return SANE_STATUS_GOOD;
        }
56 57 58
    }
    return SANE_STATUS_EOF;
}
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85

SANE_Status sane_option_get_int(SANE_Handle h, const char *option_name, SANE_Int *val)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_INT);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    return psane_control_option(h, optno, SANE_ACTION_GET_VALUE, val, NULL);
}

SANE_Status sane_option_set_int(SANE_Handle h, const char *option_name, SANE_Int val, SANE_Int *status)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_INT);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    return psane_control_option(h, optno, SANE_ACTION_SET_VALUE, (void *) &val, status);
}

86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
SANE_Status sane_option_get_bool(SANE_Handle h, const char *option_name, SANE_Bool *val, SANE_Int *status)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_BOOL);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    return psane_control_option(h, optno, SANE_ACTION_GET_VALUE, (void *) val, status);
}

SANE_Status sane_option_set_bool(SANE_Handle h, const char *option_name, SANE_Bool val, SANE_Int *status)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_BOOL);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    return psane_control_option(h, optno, SANE_ACTION_SET_VALUE, (void *) &val, status);
}

112 113 114 115 116 117 118 119 120 121 122 123 124
SANE_Status sane_option_set_fixed(SANE_Handle h, const char *option_name, SANE_Fixed val, SANE_Int *status)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_FIXED);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    return psane_control_option(h, optno, SANE_ACTION_SET_VALUE, (void *) &val, status);
}

125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
SANE_Status sane_option_get_str(SANE_Handle h, const char *option_name, SANE_String val, size_t len, SANE_Int *status)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_STRING);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    if (opt->size < len)
        return psane_control_option(h, optno, SANE_ACTION_GET_VALUE, (void *) val, status);
    else
        return SANE_STATUS_NO_MEM;
}
140

141
/* Important:  SANE has the side effect of overwriting val with the returned value */
142 143 144 145 146 147 148 149 150 151 152 153 154
SANE_Status sane_option_set_str(SANE_Handle h, const char *option_name, SANE_String val, SANE_Int *status)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_STRING);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    return psane_control_option(h, optno, SANE_ACTION_SET_VALUE, (void *) val, status);
}

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
SANE_Status sane_option_probe_resolution(SANE_Handle h, const char *option_name, SANE_Int *minval, SANE_Int *maxval, SANE_Int *quant)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_INT);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    if (opt->constraint_type != SANE_CONSTRAINT_RANGE)
        return SANE_STATUS_UNSUPPORTED;

    *minval = opt->constraint.range->min;
    *maxval = opt->constraint.range->max;
    *quant = opt->constraint.range->quant;

    return rc;
}
174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192

SANE_Status sane_option_probe_mode(SANE_Handle h, SANE_String_Const **choices, char *current, int current_size)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;
    rc = sane_find_option(h, "mode", &opt, &optno, SANE_TYPE_STRING);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    if (choices && opt->constraint_type == SANE_CONSTRAINT_STRING_LIST)
        *choices = (SANE_String_Const *) opt->constraint.string_list;

    if (opt->size < current_size)
        return psane_control_option(h, optno, SANE_ACTION_GET_VALUE, current, NULL);
    else
        return SANE_STATUS_NO_MEM;

}
193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218

SANE_Status sane_option_probe_scan_area(SANE_Handle h, const char *option_name, SANE_Fixed *val,
                                        SANE_Unit *unit, SANE_Fixed *min, SANE_Fixed *max, SANE_Fixed *quant)
{
    SANE_Status rc;
    int optno;
    const SANE_Option_Descriptor *opt;

    rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_FIXED);
    if (rc != SANE_STATUS_GOOD)
        return rc;

    if (unit)
        *unit = opt->unit;
    if (min)
        *min = opt->constraint.range->min;
    if (max)
        *max = opt->constraint.range->max;
    if (quant)
        *quant = opt->constraint.range->quant;

    if (val)
        rc = psane_control_option(h, optno, SANE_ACTION_GET_VALUE, val, NULL);

    return rc;
}
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267

TW_UINT16 sane_status_to_twcc(SANE_Status rc)
{
    switch (rc)
    {
        case SANE_STATUS_GOOD:
            return TWCC_SUCCESS;
        case SANE_STATUS_UNSUPPORTED:
            return TWCC_CAPUNSUPPORTED;
        case SANE_STATUS_JAMMED:
            return TWCC_PAPERJAM;
        case SANE_STATUS_NO_MEM:
            return TWCC_LOWMEMORY;
        case SANE_STATUS_ACCESS_DENIED:
            return TWCC_DENIED;

        case SANE_STATUS_IO_ERROR:
        case SANE_STATUS_NO_DOCS:
        case SANE_STATUS_COVER_OPEN:
        case SANE_STATUS_EOF:
        case SANE_STATUS_INVAL:
        case SANE_STATUS_CANCELLED:
        case SANE_STATUS_DEVICE_BUSY:
        default:
            return TWCC_BUMMER;
    }
}
static void convert_double_fix32(double d, TW_FIX32 *fix32)
{
    TW_INT32 value = (TW_INT32) (d * 65536.0 + 0.5);
    fix32->Whole = value >> 16;
    fix32->Frac = value & 0x0000ffffL;
}

BOOL convert_sane_res_to_twain(double sane_res, SANE_Unit unit, TW_FIX32 *twain_res, TW_UINT16 twtype)
{
    double d;

    if (unit != SANE_UNIT_MM)
        return FALSE;

    if (twtype != TWUN_INCHES)
        return FALSE;

    d = (sane_res / 10.0) / 2.54;
    convert_double_fix32((sane_res / 10.0) / 2.54, twain_res);

    return TRUE;
}
268
#endif