/////////////////////////////////////////////////////////////////////////////
-// Name: imagtiff.cpp
+// Name: src/common/imagtiff.cpp
// Purpose: wxImage TIFF handler
// Author: Robert Roebling
// RCS-ID: $Id$
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "imagtiff.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/module.h"
#ifndef TIFFLINKAGEMODE
- #define TIFFLINKAGEMODE LINKAGEMODE
+ #if defined(__WATCOMC__) && defined(__WXMGL__)
+ #define TIFFLINKAGEMODE cdecl
+ #else
+ #define TIFFLINKAGEMODE LINKAGEMODE
+ #endif
#endif
//-----------------------------------------------------------------------------
#if wxUSE_STREAMS
+// helper to translate our, possibly 64 bit, wxFileOffset to TIFF, always 32
+// bit, toff_t
+static toff_t wxFileOffsetToTIFF(wxFileOffset ofs)
+{
+ if ( ofs == wxInvalidOffset )
+ return (toff_t)-1;
+
+ toff_t tofs = wx_truncate_cast(toff_t, ofs);
+ wxCHECK_MSG( (wxFileOffset)tofs == ofs, (toff_t)-1,
+ _T("TIFF library doesn't support large files") );
+
+ return tofs;
+}
+
+// another helper to convert standard seek mode to our
+static wxSeekMode wxSeekModeFromTIFF(int whence)
+{
+ switch ( whence )
+ {
+ case SEEK_SET:
+ return wxFromStart;
+
+ case SEEK_CUR:
+ return wxFromCurrent;
+
+ case SEEK_END:
+ return wxFromEnd;
+
+ default:
+ return wxFromCurrent;
+ }
+}
+
extern "C"
{
{
wxInputStream *stream = (wxInputStream*) handle;
stream->Read( (void*) buf, (size_t) size );
- return stream->LastRead();
+ return wx_truncate_cast(tsize_t, stream->LastRead());
}
tsize_t TIFFLINKAGEMODE
{
wxOutputStream *stream = (wxOutputStream*) handle;
stream->Write( (void*) buf, (size_t) size );
- return stream->LastWrite();
+ return wx_truncate_cast(tsize_t, stream->LastWrite());
}
toff_t TIFFLINKAGEMODE
_tiffSeekIProc(thandle_t handle, toff_t off, int whence)
{
wxInputStream *stream = (wxInputStream*) handle;
- wxSeekMode mode;
- switch (whence)
- {
- case SEEK_SET: mode = wxFromStart; break;
- case SEEK_CUR: mode = wxFromCurrent; break;
- case SEEK_END: mode = wxFromEnd; break;
- default: mode = wxFromCurrent; break;
- }
- return (toff_t)stream->SeekI( (wxFileOffset)off, mode );
+ return wxFileOffsetToTIFF(stream->SeekI((wxFileOffset)off,
+ wxSeekModeFromTIFF(whence)));
}
toff_t TIFFLINKAGEMODE
_tiffSeekOProc(thandle_t handle, toff_t off, int whence)
{
wxOutputStream *stream = (wxOutputStream*) handle;
- wxSeekMode mode;
- switch (whence)
- {
- case SEEK_SET: mode = wxFromStart; break;
- case SEEK_CUR: mode = wxFromCurrent; break;
- case SEEK_END: mode = wxFromEnd; break;
- default: mode = wxFromCurrent; break;
- }
- return (toff_t)stream->SeekO( (wxFileOffset)off, mode );
+ return wxFileOffsetToTIFF(stream->SeekO((wxFileOffset)off,
+ wxSeekModeFromTIFF(whence)));
}
int TIFFLINKAGEMODE
if ( ptr[column*24 + bp*3] > 0 )
{
// check only red as this is sufficient
- reverse = reverse | 128 >> bp;
+ reverse = (uint8)(reverse | 128 >> bp);
}
}
#endif // wxUSE_STREAMS
#endif // wxUSE_LIBTIFF
-