Compile fix

[wxWidgets.git] / src / common / imagtiff.cpp

diff --git a/src/common/imagtiff.cpp b/src/common/imagtiff.cpp
index 4c09339ca7683b09147b7b0d7ce00017f132fe62..6a2d5b445a4fa1112da51995b9a4b694a2e7a2ea 100644 (file)
--- a/src/common/imagtiff.cpp
+++ b/src/common/imagtiff.cpp
@@ -11,18 +11,21 @@
 #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"
@@ -30,15 +33,13 @@ 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
+    #if defined(__WATCOMC__) && defined(__WXMGL__)
+        #define TIFFLINKAGEMODE cdecl
+    #else
+        #define TIFFLINKAGEMODE LINKAGEMODE
+    #endif
 #endif
 
 //-----------------------------------------------------------------------------
@@ -86,7 +87,7 @@ extern "C"
 {
 
 tsize_t TIFFLINKAGEMODE
-_tiffNullProc(thandle_t WXUNUSED(handle),
+wxTIFFNullProc(thandle_t WXUNUSED(handle),
           tdata_t WXUNUSED(buf),
           tsize_t WXUNUSED(size))
 {
@@ -94,7 +95,7 @@ _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 );
@@ -102,7 +103,7 @@ _tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size)
 }
 
 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 );
@@ -110,7 +111,7 @@ _tiffWriteProc(thandle_t handle, tdata_t buf, tsize_t size)
 }
 
 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;
 
@@ -119,7 +120,7 @@ _tiffSeekIProc(thandle_t handle, toff_t off, int 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;
 
@@ -128,20 +129,29 @@ _tiffSeekOProc(thandle_t handle, toff_t off, int whence)
 }
 
 int TIFFLINKAGEMODE
-_tiffCloseProc(thandle_t WXUNUSED(handle))
+wxTIFFCloseIProc(thandle_t WXUNUSED(handle))
 {
-    return 0;  // ?
+    // there is no need to close the input stream
+    return 0;
+}
+
+int TIFFLINKAGEMODE
+wxTIFFCloseOProc(thandle_t handle)
+{
+    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))
 {
@@ -149,7 +159,7 @@ _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))
 {
@@ -194,9 +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;
 }
@@ -206,9 +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;
 }
@@ -257,6 +267,14 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
     TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &w );
     TIFFGetField( tif, TIFFTAG_IMAGELENGTH, &h );
 
+    uint16 extraSamples;
+    uint16* samplesInfo;
+    TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
+                          &extraSamples, &samplesInfo);
+    const bool hasAlpha = (extraSamples == 1 &&
+                           (samplesInfo[0] == EXTRASAMPLE_ASSOCALPHA ||
+                            samplesInfo[0] == EXTRASAMPLE_UNASSALPHA));
+
     npixels = w * h;
 
     raster = (uint32*) _TIFFmalloc( npixels * sizeof(uint32) );
@@ -283,6 +301,9 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
         return false;
     }
 
+    if ( hasAlpha )
+        image->SetAlpha();
+
     if (!TIFFReadRGBAImage( tif, w, h, raster, 0 ))
     {
         if (verbose)
@@ -295,47 +316,38 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
         return false;
     }
 
-    bool hasmask = false;
-
     unsigned char *ptr = image->GetData();
     ptr += w*3*(h-1);
+
+    unsigned char *alpha = hasAlpha ? image->GetAlpha() : NULL;
+    if ( hasAlpha )
+        alpha += w*(h-1);
+
     uint32 pos = 0;
 
     for (uint32 i = 0; i < h; i++)
     {
         for (uint32 j = 0; j < w; j++)
         {
-            unsigned char alpha = (unsigned char)TIFFGetA(raster[pos]);
-            if (alpha < 127)
-            {
-                hasmask = true;
-                ptr[0] = image->GetMaskRed();
-                ptr++;
-                ptr[0] = image->GetMaskGreen();
-                ptr++;
-                ptr[0] = image->GetMaskBlue();
-                ptr++;
-            }
-            else
-            {
-                ptr[0] = (unsigned char)TIFFGetR(raster[pos]);
-                ptr++;
-                ptr[0] = (unsigned char)TIFFGetG(raster[pos]);
-                ptr++;
-                ptr[0] = (unsigned char)TIFFGetB(raster[pos]);
-                ptr++;
-            }
+            *(ptr++) = (unsigned char)TIFFGetR(raster[pos]);
+            *(ptr++) = (unsigned char)TIFFGetG(raster[pos]);
+            *(ptr++) = (unsigned char)TIFFGetB(raster[pos]);
+            if ( hasAlpha )
+                *(alpha++) = (unsigned char)TIFFGetA(raster[pos]);
+
             pos++;
         }
-        ptr -= 2*w*3; // subtract line we just added plus one line
+
+        // subtract line we just added plus one line:
+        ptr -= 2*w*3;
+        if ( hasAlpha )
+            alpha -= 2*w;
     }
 
     _TIFFfree( raster );
 
     TIFFClose( tif );
 
-    image->SetMask( hasmask );
-
     return true;
 }
 
@@ -393,7 +405,13 @@ bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
 
     int compression = image->GetOptionInt(wxIMAGE_OPTION_COMPRESSION);
     if ( !compression )
-        compression=COMPRESSION_LZW;
+    {
+        // 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);