dlls/mscms/icc.c

   1 /*
   2  * MSCMS - Color Management System for Wine
   3  *
   4  * Copyright 2004, 2005 Hans Leidekker
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29 #include "winternl.h"
  30 #include "icm.h"
  31
  32 #include "mscms_priv.h"
  33
  34 #ifdef HAVE_LCMS
  35
  36 static inline void MSCMS_adjust_endianess32( ULONG *ptr )
  37 {
  38 #ifndef WORDS_BIGENDIAN
  39     *ptr = RtlUlongByteSwap(*ptr);
  40 #endif
  41 }
  42
  43 void MSCMS_get_profile_header( const icProfile *iccprofile, PROFILEHEADER *header )
  44 {
  45     unsigned int i;
  46
  47     memcpy( header, iccprofile, sizeof(PROFILEHEADER) );
  48
  49     /* ICC format is big-endian, swap bytes if necessary */
  50     for (i = 0; i < sizeof(PROFILEHEADER) / sizeof(ULONG); i++)
  51         MSCMS_adjust_endianess32( (ULONG *)header + i );
  52 }
  53
  54 void MSCMS_set_profile_header( icProfile *iccprofile, const PROFILEHEADER *header )
  55 {
  56     unsigned int i;
  57     icHeader *iccheader = (icHeader *)iccprofile;
  58
  59     memcpy( iccheader, header, sizeof(icHeader) );
  60
  61     /* ICC format is big-endian, swap bytes if necessary */
  62     for (i = 0; i < sizeof(icHeader) / sizeof(ULONG); i++)
  63         MSCMS_adjust_endianess32( (ULONG *)iccheader + i );
  64 }
  65
  66 DWORD MSCMS_get_tag_count( const icProfile *iccprofile )
  67 {
  68     ULONG count = iccprofile->count;
  69
  70     MSCMS_adjust_endianess32( &count );
  71     return count;
  72 }
  73
  74 void MSCMS_get_tag_by_index( icProfile *iccprofile, DWORD index, icTag *tag )
  75 {
  76     icTag *tmp = (icTag *)((char *)&iccprofile->data + index * sizeof(icTag));
  77
  78     tag->sig = tmp->sig;
  79     tag->offset = tmp->offset;
  80     tag->size = tmp->size;
  81
  82     MSCMS_adjust_endianess32( (ULONG *)&tag->sig );
  83     MSCMS_adjust_endianess32( (ULONG *)&tag->offset );
  84     MSCMS_adjust_endianess32( (ULONG *)&tag->size );
  85 }
  86
  87 void MSCMS_get_tag_data( const icProfile *iccprofile, const icTag *tag, DWORD offset, void *buffer )
  88 {
  89     memcpy( buffer, (const char *)iccprofile + tag->offset + offset, tag->size - offset );
  90 }
  91
  92 void MSCMS_set_tag_data( icProfile *iccprofile, const icTag *tag, DWORD offset, const void *buffer )
  93 {
  94     memcpy( (char *)iccprofile + tag->offset + offset, buffer, tag->size - offset );
  95 }
  96
  97 DWORD MSCMS_get_profile_size( const icProfile *iccprofile )
  98 {
  99     DWORD size = ((const icHeader *)iccprofile)->size;
 100
 101     MSCMS_adjust_endianess32( (ULONG *)&size );
 102     return size;
 103 }
 104
 105 #endif /* HAVE_LCMS */