dlls/sane.ds/capability.c

   1 /*
   2  * Copyright 2000 Corel Corporation
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #define NONAMELESSUNION
  20 #define NONAMELESSSTRUCT
  21
  22 #include "config.h"
  23
  24 #include <stdarg.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "twain.h"
  29 #include "sane_i.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(twain);
  33
  34 static TW_UINT16 get_onevalue(pTW_CAPABILITY pCapability, TW_UINT16 *type, TW_UINT32 *value)
  35 {
  36     if (pCapability->hContainer)
  37     {
  38         pTW_ONEVALUE pVal = GlobalLock (pCapability->hContainer);
  39         if (pVal)
  40         {
  41             *value = pVal->Item;
  42             if (type)
  43                 *type = pVal->ItemType;
  44             GlobalUnlock (pCapability->hContainer);
  45             return TWCC_SUCCESS;
  46         }
  47     }
  48     return TWCC_BUMMER;
  49 }
  50
  51
  52 static TW_UINT16 set_onevalue(pTW_CAPABILITY pCapability, TW_UINT16 type, TW_UINT32 value)
  53 {
  54     pCapability->hContainer = GlobalAlloc (0, sizeof(TW_ONEVALUE));
  55
  56     if (pCapability->hContainer)
  57     {
  58         pTW_ONEVALUE pVal = GlobalLock (pCapability->hContainer);
  59         if (pVal)
  60         {
  61             pCapability->ConType = TWON_ONEVALUE;
  62             pVal->ItemType = type;
  63             pVal->Item = value;
  64             GlobalUnlock (pCapability->hContainer);
  65             return TWCC_SUCCESS;
  66         }
  67     }
  68    return TWCC_LOWMEMORY;
  69 }
  70
  71 static TW_UINT16 msg_set(pTW_CAPABILITY pCapability, TW_UINT32 *val)
  72 {
  73     if (pCapability->ConType == TWON_ONEVALUE)
  74         return get_onevalue(pCapability, NULL, val);
  75
  76     FIXME("Partial Stub:  MSG_SET only supports TW_ONEVALUE\n");
  77     return TWCC_BADCAP;
  78 }
  79
  80
  81 static TW_UINT16 msg_get_enum(pTW_CAPABILITY pCapability, const TW_UINT32 *values, int value_count,
  82                               TW_UINT16 type, TW_UINT32 current, TW_UINT32 default_value)
  83 {
  84     TW_ENUMERATION *enumv = NULL;
  85     TW_UINT32 *p32;
  86     TW_UINT16 *p16;
  87     int i;
  88
  89     pCapability->ConType = TWON_ENUMERATION;
  90     pCapability->hContainer = 0;
  91
  92     if (type == TWTY_INT16 || type == TWTY_UINT16)
  93         pCapability->hContainer = GlobalAlloc (0, FIELD_OFFSET( TW_ENUMERATION, ItemList[value_count * sizeof(TW_UINT16)]));
  94
  95     if (type == TWTY_INT32 || type == TWTY_UINT32)
  96         pCapability->hContainer = GlobalAlloc (0, FIELD_OFFSET( TW_ENUMERATION, ItemList[value_count * sizeof(TW_UINT32)]));
  97
  98     if (pCapability->hContainer)
  99         enumv = GlobalLock(pCapability->hContainer);
 100
 101     if (! enumv)
 102         return TWCC_LOWMEMORY;
 103
 104     enumv->ItemType = type;
 105     enumv->NumItems = value_count;
 106
 107     p16 = (TW_UINT16 *) enumv->ItemList;
 108     p32 = (TW_UINT32 *) enumv->ItemList;
 109     for (i = 0; i < value_count; i++)
 110     {
 111         if (values[i] == current)
 112             enumv->CurrentIndex = i;
 113         if (values[i] == default_value)
 114             enumv->DefaultIndex = i;
 115         if (type == TWTY_INT16 || type == TWTY_UINT16)
 116             p16[i] = values[i];
 117         if (type == TWTY_INT32 || type == TWTY_UINT32)
 118             p32[i] = values[i];
 119     }
 120
 121     GlobalUnlock(pCapability->hContainer);
 122     return TWCC_SUCCESS;
 123 }
 124
 125 static TW_UINT16 TWAIN_GetSupportedCaps(pTW_CAPABILITY pCapability)
 126 {
 127     TW_ARRAY *a;
 128     static const UINT16 supported_caps[] = { CAP_SUPPORTEDCAPS, ICAP_XFERMECH };
 129
 130     pCapability->hContainer = GlobalAlloc (0, FIELD_OFFSET( TW_ARRAY, ItemList[sizeof(supported_caps)] ));
 131     pCapability->ConType = TWON_ARRAY;
 132
 133     if (pCapability->hContainer)
 134     {
 135         UINT16 *u;
 136         int i;
 137         a = GlobalLock (pCapability->hContainer);
 138         a->ItemType = TWTY_UINT16;
 139         a->NumItems = sizeof(supported_caps) / sizeof(supported_caps[0]);
 140         u = (UINT16 *) a->ItemList;
 141         for (i = 0; i < a->NumItems; i++)
 142             u[i] = supported_caps[i];
 143         GlobalUnlock (pCapability->hContainer);
 144         return TWCC_SUCCESS;
 145     }
 146     else
 147         return TWCC_LOWMEMORY;
 148 }
 149
 150
 151 /* ICAP_XFERMECH */
 152 static TW_UINT16 SANE_ICAPXferMech (pTW_CAPABILITY pCapability, TW_UINT16 action)
 153 {
 154     static const TW_UINT32 possible_values[] = { TWSX_NATIVE, TWSX_MEMORY };
 155     TW_UINT32 val;
 156     TW_UINT16 twCC = TWCC_BADCAP;
 157
 158     TRACE("ICAP_XFERMECH\n");
 159
 160     switch (action)
 161     {
 162         case MSG_QUERYSUPPORT:
 163             twCC = set_onevalue(pCapability, TWTY_INT32,
 164                     TWQC_GET | TWQC_SET | TWQC_GETDEFAULT | TWQC_GETCURRENT | TWQC_RESET );
 165             break;
 166
 167         case MSG_GET:
 168             twCC = msg_get_enum(pCapability, possible_values, sizeof(possible_values) / sizeof(possible_values[0]),
 169                     TWTY_UINT16, activeDS.capXferMech, TWSX_NATIVE);
 170             break;
 171
 172         case MSG_SET:
 173             twCC = msg_set(pCapability, &val);
 174             if (twCC == TWCC_SUCCESS)
 175             {
 176                activeDS.capXferMech = (TW_UINT16) val;
 177                FIXME("Partial Stub:  XFERMECH set to %d, but ignored\n", val);
 178             }
 179             break;
 180
 181         case MSG_GETDEFAULT:
 182             twCC = set_onevalue(pCapability, TWTY_UINT16, TWSX_NATIVE);
 183             break;
 184
 185         case MSG_RESET:
 186             activeDS.capXferMech = TWSX_NATIVE;
 187             /* .. fall through intentional .. */
 188
 189         case MSG_GETCURRENT:
 190             twCC = set_onevalue(pCapability, TWTY_UINT16, activeDS.capXferMech);
 191             FIXME("Partial Stub:  XFERMECH of %d not actually used\n", activeDS.capXferMech);
 192             break;
 193     }
 194     return twCC;
 195 }
 196
 197
 198 TW_UINT16 SANE_SaneCapability (pTW_CAPABILITY pCapability, TW_UINT16 action)
 199 {
 200     TW_UINT16 twCC = TWCC_CAPUNSUPPORTED;
 201
 202     TRACE("capability=%d action=%d\n", pCapability->Cap, action);
 203
 204     switch (pCapability->Cap)
 205     {
 206         case CAP_SUPPORTEDCAPS:
 207             if (action == MSG_GET)
 208                 twCC = TWAIN_GetSupportedCaps(pCapability);
 209             else
 210                 twCC = TWCC_BADVALUE;
 211             break;
 212
 213         case CAP_XFERCOUNT:
 214             /* This is a required capability that every source needs to
 215                support but we haven't implemented it yet. */
 216             twCC = TWCC_SUCCESS;
 217             break;
 218
 219         case ICAP_XFERMECH:
 220             twCC = SANE_ICAPXferMech (pCapability, action);
 221             break;
 222
 223         default:
 224             twCC = TWRC_FAILURE;
 225
 226     }
 227
 228     return twCC;
 229 }