141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/*
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* Copyright 2009 Jeremy White <jwhite@codeweavers.com> for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include "twain.h"
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#include "sane_i.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(twain);
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#ifdef SONAME_LIBSANE
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static SANE_Status sane_find_option(SANE_Handle h, const char *option_name,
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const SANE_Option_Descriptor **opt_p, int *optno, SANE_Value_Type type)
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{
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SANE_Status rc;
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SANE_Int optcount;
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const SANE_Option_Descriptor *opt;
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int i;
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/* Debian, in 32_net_backend_standard_fix.dpatch,
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* forces a frontend (that's us) to reload options
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* manually by invoking get_option_descriptor. */
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opt = psane_get_option_descriptor(h, 0);
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if (! opt)
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return SANE_STATUS_EOF;
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rc = psane_control_option(h, 0, SANE_ACTION_GET_VALUE, &optcount, NULL);
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if (rc != SANE_STATUS_GOOD)
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return rc;
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for (i = 1; i < optcount; i++)
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{
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opt = psane_get_option_descriptor(h, i);
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if (opt && (opt->name && strcmp(opt->name, option_name) == 0) &&
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opt->type == type)
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{
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*opt_p = opt;
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*optno = i;
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return SANE_STATUS_GOOD;
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}
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}
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return SANE_STATUS_EOF;
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}
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SANE_Status sane_option_get_int(SANE_Handle h, const char *option_name, SANE_Int *val)
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{
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SANE_Status rc;
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int optno;
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const SANE_Option_Descriptor *opt;
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rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_INT);
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if (rc != SANE_STATUS_GOOD)
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return rc;
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return psane_control_option(h, optno, SANE_ACTION_GET_VALUE, val, NULL);
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}
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SANE_Status sane_option_set_int(SANE_Handle h, const char *option_name, SANE_Int val, SANE_Int *status)
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{
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SANE_Status rc;
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int optno;
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const SANE_Option_Descriptor *opt;
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rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_INT);
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if (rc != SANE_STATUS_GOOD)
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return rc;
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return psane_control_option(h, optno, SANE_ACTION_SET_VALUE, (void *) &val, status);
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}
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/* Important: SANE has the side effect of of overwriting val with the returned value */
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SANE_Status sane_option_set_str(SANE_Handle h, const char *option_name, SANE_String val, SANE_Int *status)
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{
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SANE_Status rc;
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int optno;
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const SANE_Option_Descriptor *opt;
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rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_STRING);
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if (rc != SANE_STATUS_GOOD)
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return rc;
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return psane_control_option(h, optno, SANE_ACTION_SET_VALUE, (void *) val, status);
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}
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SANE_Status sane_option_probe_resolution(SANE_Handle h, const char *option_name, SANE_Int *minval, SANE_Int *maxval, SANE_Int *quant)
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{
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SANE_Status rc;
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int optno;
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const SANE_Option_Descriptor *opt;
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rc = sane_find_option(h, option_name, &opt, &optno, SANE_TYPE_INT);
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if (rc != SANE_STATUS_GOOD)
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return rc;
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if (opt->constraint_type != SANE_CONSTRAINT_RANGE)
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return SANE_STATUS_UNSUPPORTED;
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*minval = opt->constraint.range->min;
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*maxval = opt->constraint.range->max;
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*quant = opt->constraint.range->quant;
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return rc;
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}
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SANE_Status sane_option_probe_mode(SANE_Handle h, SANE_String_Const **choices, char *current, int current_size)
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{
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SANE_Status rc;
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int optno;
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const SANE_Option_Descriptor *opt;
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rc = sane_find_option(h, "mode", &opt, &optno, SANE_TYPE_STRING);
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if (rc != SANE_STATUS_GOOD)
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return rc;
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if (choices && opt->constraint_type == SANE_CONSTRAINT_STRING_LIST)
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*choices = (SANE_String_Const *) opt->constraint.string_list;
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if (opt->size < current_size)
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return psane_control_option(h, optno, SANE_ACTION_GET_VALUE, current, NULL);
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else
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return SANE_STATUS_NO_MEM;
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}
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#endif
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