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121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*
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* MSCMS - Color Management System for Wine
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*
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* Copyright 2004, 2005 Hans Leidekker
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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 <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winternl.h"
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#include "icm.h"
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#include "mscms_priv.h"
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#ifdef HAVE_LCMS2
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static inline void adjust_endianness32( ULONG *ptr )
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{
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#ifndef WORDS_BIGENDIAN
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*ptr = RtlUlongByteSwap(*ptr);
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#endif
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}
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void get_profile_header( const struct profile *profile, PROFILEHEADER *header )
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{
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unsigned int i;
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memcpy( header, profile->data, sizeof(PROFILEHEADER) );
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/* ICC format is big-endian, swap bytes if necessary */
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for (i = 0; i < sizeof(PROFILEHEADER) / sizeof(ULONG); i++)
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adjust_endianness32( (ULONG *)header + i );
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}
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void set_profile_header( const struct profile *profile, const PROFILEHEADER *header )
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{
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unsigned int i;
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memcpy( profile->data, header, sizeof(PROFILEHEADER) );
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/* ICC format is big-endian, swap bytes if necessary */
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for (i = 0; i < sizeof(PROFILEHEADER) / sizeof(ULONG); i++)
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adjust_endianness32( (ULONG *)profile->data + i );
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}
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static BOOL get_adjusted_tag( const struct profile *profile, TAGTYPE type, cmsTagEntry *tag )
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{
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DWORD i, num_tags = *(DWORD *)(profile->data + sizeof(cmsICCHeader));
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cmsTagEntry *entry;
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ULONG sig;
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adjust_endianness32( &num_tags );
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for (i = 0; i < num_tags; i++)
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{
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entry = (cmsTagEntry *)(profile->data + sizeof(cmsICCHeader) + sizeof(DWORD) + i * sizeof(*tag));
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sig = entry->sig;
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adjust_endianness32( &sig );
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if (sig == type)
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{
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tag->sig = sig;
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tag->offset = entry->offset;
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tag->size = entry->size;
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adjust_endianness32( &tag->offset );
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adjust_endianness32( &tag->size );
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return TRUE;
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}
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}
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return FALSE;
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}
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BOOL get_tag_data( const struct profile *profile, TAGTYPE type, DWORD offset, void *buffer, DWORD *len )
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{
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cmsTagEntry tag;
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if (!get_adjusted_tag( profile, type, &tag )) return FALSE;
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if (!buffer) offset = 0;
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if (offset > tag.size) return FALSE;
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if (*len < tag.size - offset || !buffer)
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{
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*len = tag.size - offset;
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return FALSE;
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}
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memcpy( buffer, profile->data + tag.offset + offset, tag.size - offset );
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*len = tag.size - offset;
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return TRUE;
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}
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BOOL set_tag_data( const struct profile *profile, TAGTYPE type, DWORD offset, const void *buffer, DWORD *len )
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{
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cmsTagEntry tag;
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if (!get_adjusted_tag( profile, type, &tag )) return FALSE;
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if (offset > tag.size) return FALSE;
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*len = min( tag.size - offset, *len );
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memcpy( profile->data + tag.offset + offset, buffer, *len );
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return TRUE;
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}
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#endif /* HAVE_LCMS2 */
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