X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f6bcfd974ef26faf6f91a62cac09827e09463fd1..96aaaff8654713ad989bd833476856e9df06f8a8:/src/common/imagtiff.cpp?ds=sidebyside

diff --git a/src/common/imagtiff.cpp b/src/common/imagtiff.cpp
index ec1a1bc534..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
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#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_LIBTIFF
+#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"
@@ -34,8 +33,14 @@ extern "C"
 }
 #include "wx/filefn.h"
 #include "wx/wfstream.h"
-#include "wx/intl.h"
-#include "wx/module.h"
+
+#ifndef TIFFLINKAGEMODE
+    #if defined(__WATCOMC__) && defined(__WXMGL__)
+        #define TIFFLINKAGEMODE cdecl
+    #else
+        #define TIFFLINKAGEMODE LINKAGEMODE
+    #endif
+#endif
 
 //-----------------------------------------------------------------------------
 // wxTIFFHandler
@@ -43,98 +48,165 @@ extern "C"
 
 IMPLEMENT_DYNAMIC_CLASS(wxTIFFHandler,wxImageHandler)
 
-static tsize_t
-_tiffNullProc(thandle_t WXUNUSED(handle),
-	      tdata_t WXUNUSED(buf),
-	      tsize_t WXUNUSED(size))
+#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
+wxTIFFNullProc(thandle_t WXUNUSED(handle),
+          tdata_t WXUNUSED(buf),
+          tsize_t WXUNUSED(size))
 {
     return (tsize_t) -1;
 }
 
-static tsize_t
-_tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size)
+tsize_t TIFFLINKAGEMODE
+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());
 }
 
-static tsize_t
-_tiffWriteProc(thandle_t handle, tdata_t buf, tsize_t size)
+tsize_t TIFFLINKAGEMODE
+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());
 }
 
-static toff_t
-_tiffSeekIProc(thandle_t handle, toff_t off, int whence)
+toff_t TIFFLINKAGEMODE
+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)));
 }
 
-static toff_t
-_tiffSeekOProc(thandle_t handle, toff_t off, int whence)
+toff_t TIFFLINKAGEMODE
+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;
 }
 
-static int
-_tiffCloseProc(thandle_t WXUNUSED(handle))
+int TIFFLINKAGEMODE
+wxTIFFCloseOProc(thandle_t handle)
 {
-    return 0;  // ?
+    wxOutputStream *stream = (wxOutputStream*) handle;
+
+    return stream->Close() ? 0 : -1;
 }
 
-static toff_t
-_tiffSizeProc(thandle_t handle)
+toff_t TIFFLINKAGEMODE
+wxTIFFSizeProc(thandle_t handle)
 {
     wxStreamBase *stream = (wxStreamBase*) handle;
     return (toff_t) stream->GetSize();
 }
 
-static int
-_tiffMapProc(thandle_t WXUNUSED(handle),
+int TIFFLINKAGEMODE
+wxTIFFMapProc(thandle_t WXUNUSED(handle),
              tdata_t* WXUNUSED(pbase),
              toff_t* WXUNUSED(psize))
 {
     return 0;
 }
 
-static void
-_tiffUnmapProc(thandle_t WXUNUSED(handle),
+void TIFFLINKAGEMODE
+wxTIFFUnmapProc(thandle_t WXUNUSED(handle),
                tdata_t WXUNUSED(base),
                toff_t WXUNUSED(size))
 {
 }
 
+static void
+TIFFwxWarningHandler(const char* module,
+                     const char* WXUNUSED_IN_UNICODE(fmt),
+                     va_list WXUNUSED_IN_UNICODE(ap))
+{
+    if (module != NULL)
+        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* WXUNUSED_IN_UNICODE(fmt),
+                   va_list WXUNUSED_IN_UNICODE(ap))
+{
+    if (module != NULL)
+        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"
+
 TIFF*
 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;
 }
@@ -144,15 +216,28 @@ 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;
 }
 
+wxTIFFHandler::wxTIFFHandler()
+{
+    m_name = wxT("TIFF file");
+    m_extension = wxT("tif");
+    m_type = wxBITMAP_TYPE_TIF;
+    m_mime = wxT("image/tiff");
+    TIFFSetWarningHandler((TIFFErrorHandler) TIFFwxWarningHandler);
+    TIFFSetErrorHandler((TIFFErrorHandler) TIFFwxErrorHandler);
+}
+
 bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index )
 {
+    if (index == -1)
+        index = 0;
+
     image->Destroy();
 
     TIFF *tif = TIFFwxOpen( stream, "image", "r" );
@@ -162,7 +247,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
         if (verbose)
             wxLogError( _("TIFF: Error loading image.") );
 
-        return FALSE;
+        return false;
     }
 
     if (!TIFFSetDirectory( tif, (tdir_t)index ))
@@ -172,7 +257,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
 
         TIFFClose( tif );
 
-        return FALSE;
+        return false;
     }
 
     uint32 w, h;
@@ -190,10 +275,10 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
     {
         if (verbose)
             wxLogError( _("TIFF: Couldn't allocate memory.") );
-            
+
         TIFFClose( tif );
 
-        return FALSE;
+        return false;
     }
 
     image->Create( (int)w, (int)h );
@@ -205,7 +290,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
         _TIFFfree( raster );
         TIFFClose( tif );
 
-        return FALSE;
+        return false;
     }
 
     if (!TIFFReadRGBAImage( tif, w, h, raster, 0 ))
@@ -217,10 +302,10 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
         image->Destroy();
         TIFFClose( tif );
 
-        return FALSE;
+        return false;
     }
 
-    bool hasmask = FALSE;
+    bool hasmask = false;
 
     unsigned char *ptr = image->GetData();
     ptr += w*3*(h-1);
@@ -233,7 +318,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
             unsigned char alpha = (unsigned char)TIFFGetA(raster[pos]);
             if (alpha < 127)
             {
-                hasmask = TRUE;
+                hasmask = true;
                 ptr[0] = image->GetMaskRed();
                 ptr++;
                 ptr[0] = image->GetMaskGreen();
@@ -261,7 +346,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
 
     image->SetMask( hasmask );
 
-    return TRUE;
+    return true;
 }
 
 int wxTIFFHandler::GetImageCount( wxInputStream& stream )
@@ -290,22 +375,57 @@ bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
         if (verbose)
             wxLogError( _("TIFF: Error saving image.") );
 
-        return FALSE;
+        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)
@@ -315,58 +435,79 @@ bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
 
             TIFFClose( tif );
 
-            return FALSE;
+            return false;
         }
-    } 
-    else 
+    }
+    else
     {
         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 (TIFFWriteScanline(tif, buf ? buf : ptr, (uint32)row, 0) < 0)
+        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 (verbose)
-	            wxLogError( _("TIFF: Error writing image.") );
-        
+            if (verbose)
+                wxLogError( _("TIFF: Error writing image.") );
+
             TIFFClose( tif );
             if (buf)
                 _TIFFfree(buf);
-                
-            return FALSE;
+
+            return false;
         }
+
         ptr += image->GetWidth()*3;
     }
 
     (void) TIFFClose(tif);
 
     if (buf)
-    _TIFFfree(buf);
+        _TIFFfree(buf);
 
-    return TRUE;
+    return true;
 }
 
 bool wxTIFFHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[2];
 
-    stream.Read(&hdr, 2);
-    stream.SeekI(-2, wxFromCurrent);
+    if ( !stream.Read(&hdr[0], WXSIZEOF(hdr)) )
+        return false;
 
-    return ((hdr[0] == 0x49 && hdr[1] == 0x49) ||
-            (hdr[0] == 0x4D && hdr[1] == 0x4D));
+    return (hdr[0] == 'I' && hdr[1] == 'I') ||
+           (hdr[0] == 'M' && hdr[1] == 'M');
 }
 
+#endif  // wxUSE_STREAMS
 
-#endif
-   // wxUSE_LIBTIFF
-
-
+#endif  // wxUSE_LIBTIFF