X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7beb59f36c016d27cf8949eb8c0d38fc63ad536a..30c4dd918ad3fd79065f5253e012b39e5fe942c8:/src/common/imagtiff.cpp

diff --git a/src/common/imagtiff.cpp b/src/common/imagtiff.cpp
index 6a4e3d3bce..b7871ba994 100644
--- a/src/common/imagtiff.cpp
+++ b/src/common/imagtiff.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        imagtiff.cpp
+// Name:        src/common/imagtiff.cpp
 // Purpose:     wxImage TIFF handler
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
@@ -7,26 +7,25 @@
 // 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"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
-#include "wx/defs.h"
-
 #if wxUSE_IMAGE && wxUSE_LIBTIFF
 
 #include "wx/imagtiff.h"
-#include "wx/bitmap.h"
-#include "wx/debug.h"
-#include "wx/log.h"
-#include "wx/app.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/intl.h"
+    #include "wx/bitmap.h"
+    #include "wx/module.h"
+#endif
+
 extern "C"
 {
     #include "tiff.h"
@@ -34,11 +33,13 @@ extern "C"
 }
 #include "wx/filefn.h"
 #include "wx/wfstream.h"
-#include "wx/intl.h"
-#include "wx/module.h"
 
 #ifndef TIFFLINKAGEMODE
-  #define TIFFLINKAGEMODE LINKAGEMODE
+    #if defined(__WATCOMC__) && defined(__WXMGL__)
+        #define TIFFLINKAGEMODE cdecl
+    #else
+        #define TIFFLINKAGEMODE LINKAGEMODE
+    #endif
 #endif
 
 //-----------------------------------------------------------------------------
@@ -49,11 +50,44 @@ IMPLEMENT_DYNAMIC_CLASS(wxTIFFHandler,wxImageHandler)
 
 #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"
 {
 
 tsize_t TIFFLINKAGEMODE
-_tiffNullProc(thandle_t WXUNUSED(handle),
+wxTIFFNullProc(thandle_t WXUNUSED(handle),
           tdata_t WXUNUSED(buf),
           tsize_t WXUNUSED(size))
 {
@@ -61,68 +95,63 @@ _tiffNullProc(thandle_t WXUNUSED(handle),
 }
 
 tsize_t TIFFLINKAGEMODE
-_tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size)
+wxTIFFReadProc(thandle_t handle, tdata_t buf, tsize_t size)
 {
     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
-_tiffWriteProc(thandle_t handle, tdata_t buf, tsize_t size)
+wxTIFFWriteProc(thandle_t handle, tdata_t buf, tsize_t size)
 {
     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)
+wxTIFFSeekIProc(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( (off_t)off, mode );
+    return wxFileOffsetToTIFF(stream->SeekI((wxFileOffset)off,
+                                            wxSeekModeFromTIFF(whence)));
 }
 
 toff_t TIFFLINKAGEMODE
-_tiffSeekOProc(thandle_t handle, toff_t off, int whence)
+wxTIFFSeekOProc(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( (off_t)off, mode );
+    return wxFileOffsetToTIFF(stream->SeekO((wxFileOffset)off,
+                                            wxSeekModeFromTIFF(whence)));
+}
+
+int TIFFLINKAGEMODE
+wxTIFFCloseIProc(thandle_t WXUNUSED(handle))
+{
+    // there is no need to close the input stream
+    return 0;
 }
 
 int TIFFLINKAGEMODE
-_tiffCloseProc(thandle_t WXUNUSED(handle))
+wxTIFFCloseOProc(thandle_t handle)
 {
-    return 0;  // ?
+    wxOutputStream *stream = (wxOutputStream*) handle;
+
+    return stream->Close() ? 0 : -1;
 }
 
 toff_t TIFFLINKAGEMODE
-_tiffSizeProc(thandle_t handle)
+wxTIFFSizeProc(thandle_t handle)
 {
     wxStreamBase *stream = (wxStreamBase*) handle;
     return (toff_t) stream->GetSize();
 }
 
 int TIFFLINKAGEMODE
-_tiffMapProc(thandle_t WXUNUSED(handle),
+wxTIFFMapProc(thandle_t WXUNUSED(handle),
              tdata_t* WXUNUSED(pbase),
              toff_t* WXUNUSED(psize))
 {
@@ -130,26 +159,42 @@ _tiffMapProc(thandle_t WXUNUSED(handle),
 }
 
 void TIFFLINKAGEMODE
-_tiffUnmapProc(thandle_t WXUNUSED(handle),
+wxTIFFUnmapProc(thandle_t WXUNUSED(handle),
                tdata_t WXUNUSED(base),
                toff_t WXUNUSED(size))
 {
 }
 
 static void
-TIFFwxWarningHandler(const char* module, const char* fmt, va_list ap)
+TIFFwxWarningHandler(const char* module,
+                     const char* WXUNUSED_IN_UNICODE(fmt),
+                     va_list WXUNUSED_IN_UNICODE(ap))
 {
     if (module != NULL)
-            wxLogWarning(_("tiff module: %s"), module);
-    wxLogWarning((wxChar *) fmt, ap);
+        wxLogWarning(_("tiff module: %s"), wxString::FromAscii(module).c_str());
+
+    // FIXME: this is not terrible informative but better than crashing!
+#if wxUSE_UNICODE
+    wxLogWarning(_("TIFF library warning."));
+#else
+    wxVLogWarning(fmt, ap);
+#endif
 }
 
 static void
-TIFFwxErrorHandler(const char* module, const char* fmt, va_list ap)
+TIFFwxErrorHandler(const char* module,
+                   const char* WXUNUSED_IN_UNICODE(fmt),
+                   va_list WXUNUSED_IN_UNICODE(ap))
 {
     if (module != NULL)
-            wxLogError(_("tiff module: %s"), module);
-    wxVLogError((wxChar *) fmt, ap);
+        wxLogError(_("tiff module: %s"), wxString::FromAscii(module).c_str());
+
+    // FIXME: as above
+#if wxUSE_UNICODE
+    wxLogError(_("TIFF library error."));
+#else
+    wxVLogError(fmt, ap);
+#endif
 }
 
 } // extern "C"
@@ -159,9 +204,9 @@ TIFFwxOpen(wxInputStream &stream, const char* name, const char* mode)
 {
     TIFF* tif = TIFFClientOpen(name, mode,
         (thandle_t) &stream,
-        _tiffReadProc, _tiffNullProc,
-        _tiffSeekIProc, _tiffCloseProc, _tiffSizeProc,
-        _tiffMapProc, _tiffUnmapProc);
+        wxTIFFReadProc, wxTIFFNullProc,
+        wxTIFFSeekIProc, wxTIFFCloseIProc, wxTIFFSizeProc,
+        wxTIFFMapProc, wxTIFFUnmapProc);
 
     return tif;
 }
@@ -171,9 +216,9 @@ TIFFwxOpen(wxOutputStream &stream, const char* name, const char* mode)
 {
     TIFF* tif = TIFFClientOpen(name, mode,
         (thandle_t) &stream,
-        _tiffNullProc, _tiffWriteProc,
-        _tiffSeekOProc, _tiffCloseProc, _tiffSizeProc,
-        _tiffMapProc, _tiffUnmapProc);
+        wxTIFFNullProc, wxTIFFWriteProc,
+        wxTIFFSeekOProc, wxTIFFCloseOProc, wxTIFFSizeProc,
+        wxTIFFMapProc, wxTIFFUnmapProc);
 
     return tif;
 }
@@ -333,19 +378,54 @@ bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
         return false;
     }
 
+    TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
     TIFFSetField(tif, TIFFTAG_IMAGEWIDTH,  (uint32)image->GetWidth());
     TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (uint32)image->GetHeight());
     TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
-    TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
-    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
     TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
-    TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
-    TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_LZW);
 
-    tsize_t linebytes = (tsize_t)image->GetWidth() * 3;
+    if ( image->HasOption(wxIMAGE_OPTION_RESOLUTIONX) &&
+            image->HasOption(wxIMAGE_OPTION_RESOLUTIONY) )
+    {
+        TIFFSetField(tif, TIFFTAG_XRESOLUTION,
+                        (float)image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX));
+        TIFFSetField(tif, TIFFTAG_YRESOLUTION,
+                        (float)image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY));
+    }
+
+    int spp = image->GetOptionInt(wxIMAGE_OPTION_SAMPLESPERPIXEL);
+    if ( !spp )
+        spp = 3;
+
+    int bpp = image->GetOptionInt(wxIMAGE_OPTION_BITSPERSAMPLE);
+    if ( !bpp )
+        bpp=8;
+
+    int compression = image->GetOptionInt(wxIMAGE_OPTION_COMPRESSION);
+    if ( !compression )
+    {
+        // we can't use COMPRESSION_LZW because current version of libtiff
+        // doesn't implement it ("no longer implemented due to Unisys patent
+        // enforcement") and other compression methods are lossy so we
+        // shouldn't use them by default -- and the only remaining one is none
+        compression = COMPRESSION_NONE;
+    }
+
+    TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, spp);
+    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bpp);
+    TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, spp*bpp == 1 ? PHOTOMETRIC_MINISBLACK
+                                                        : PHOTOMETRIC_RGB);
+    TIFFSetField(tif, TIFFTAG_COMPRESSION, compression);
+
+    // scanlinesize if determined by spp and bpp
+    tsize_t linebytes = (tsize_t)image->GetWidth() * spp * bpp / 8;
+
+    if ( (image->GetWidth() % 8 > 0) && (spp * bpp < 8) )
+        linebytes+=1;
+
     unsigned char *buf;
 
-    if (TIFFScanlineSize(tif) > linebytes)
+    if (TIFFScanlineSize(tif) > linebytes || (spp * bpp < 24))
     {
         buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(tif));
         if (!buf)
@@ -363,16 +443,38 @@ bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
         buf = NULL;
     }
 
-    TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP,
-        TIFFDefaultStripSize(tif, (uint32) -1));
+    TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP,TIFFDefaultStripSize(tif, (uint32) -1));
 
     unsigned char *ptr = image->GetData();
-    for (int row = 0; row < image->GetHeight(); row++)
+    for ( int row = 0; row < image->GetHeight(); row++ )
     {
-        if (buf)
-            memcpy(buf, ptr, image->GetWidth());
+        if ( buf )
+        {
+            if ( spp * bpp > 1 )
+            {
+                // color image
+                memcpy(buf, ptr, image->GetWidth());
+            }
+            else // black and white image
+            {
+                for ( int column = 0; column < linebytes; column++ )
+                {
+                    uint8 reverse = 0;
+                    for ( int bp = 0; bp < 8; bp++ )
+                    {
+                        if ( ptr[column*24 + bp*3] > 0 )
+                        {
+                            // check only red as this is sufficient
+                            reverse = (uint8)(reverse | 128 >> bp);
+                        }
+                    }
+
+                    buf[column] = reverse;
+                }
+            }
+        }
 
-        if (TIFFWriteScanline(tif, buf ? buf : ptr, (uint32)row, 0) < 0)
+        if ( TIFFWriteScanline(tif, buf ? buf : ptr, (uint32)row, 0) < 0 )
         {
             if (verbose)
                 wxLogError( _("TIFF: Error writing image.") );
@@ -383,13 +485,14 @@ bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
 
             return false;
         }
+
         ptr += image->GetWidth()*3;
     }
 
     (void) TIFFClose(tif);
 
     if (buf)
-    _TIFFfree(buf);
+        _TIFFfree(buf);
 
     return true;
 }
@@ -398,7 +501,7 @@ bool wxTIFFHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[2];
 
-    if ( !stream.Read(&hdr, WXSIZEOF(hdr)) )
+    if ( !stream.Read(&hdr[0], WXSIZEOF(hdr)) )
         return false;
 
     return (hdr[0] == 'I' && hdr[1] == 'I') ||
@@ -408,4 +511,3 @@ bool wxTIFFHandler::DoCanRead( wxInputStream& stream )
 #endif  // wxUSE_STREAMS
 
 #endif  // wxUSE_LIBTIFF
-