there is no sqrt(int) in standard C++ (although glibc seems to provide it); select...

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

diff --git a/src/common/imagiff.cpp b/src/common/imagiff.cpp
index 5a6dc5cced6e3343ddec1ae76aa064725dda8d26..058d6e5cd0bb0e1409edb0d4e36cd30468e302c2 100644 (file)
--- a/src/common/imagiff.cpp
+++ b/src/common/imagiff.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        imagiff.h
+// Name:        src/common/imagiff.h

 // Purpose:     wxImage handler for Amiga IFF images
 // Author:      Steffen Gutmann, Thomas Meyer
 // RCS-ID:      $Id$
 // Purpose:     wxImage handler for Amiga IFF images
 // Author:      Steffen Gutmann, Thomas Meyer
 // RCS-ID:      $Id$


@@ -12,27 +12,22 @@
 // by the author of xv, John Bradley for using the iff loading part
 // in wxWidgets has been gratefully given.
 
 // by the author of xv, John Bradley for using the iff loading part
 // in wxWidgets has been gratefully given.
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "imagiff.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#  pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

+#if wxUSE_IMAGE && wxUSE_IFF
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

-#  include "wx/defs.h"
+    #include "wx/log.h"
+    #include "wx/intl.h"

 #endif
 
 #endif
 

-#if wxUSE_IMAGE && wxUSE_IFF
-

 #include "wx/imagiff.h"
 #include "wx/wfstream.h"
 #include "wx/imagiff.h"
 #include "wx/wfstream.h"

-#include "wx/log.h"
-#include "wx/intl.h"

 
 #if wxUSE_PALETTE
     #include "wx/palette.h"
 
 #if wxUSE_PALETTE
     #include "wx/palette.h"


@@ -239,7 +234,7 @@ bool wxIFFDecoder::CanRead()
     if ( !m_f->Read(buf, WXSIZEOF(buf)) )
         return false;
 
     if ( !m_f->Read(buf, WXSIZEOF(buf)) )
         return false;
 

-    m_f->SeekI(-(off_t)WXSIZEOF(buf), wxFromCurrent);
+    m_f->SeekI(-(wxFileOffset)WXSIZEOF(buf), wxFromCurrent);

 
     return (memcmp(buf, "FORM", 4) == 0) && (memcmp(buf+8, "ILBM", 4) == 0);
 }
 
     return (memcmp(buf, "FORM", 4) == 0) && (memcmp(buf+8, "ILBM", 4) == 0);
 }


@@ -339,7 +334,7 @@ int wxIFFDecoder::ReadIFF()
     }
 
     // compute file length
     }
 
     // compute file length

-    off_t currentPos = m_f->TellI();
+    wxFileOffset currentPos = m_f->TellI();

     m_f->SeekI(0, wxFromEnd);
     long filesize = m_f->TellI();
     m_f->SeekI(currentPos, wxFromStart);
     m_f->SeekI(0, wxFromEnd);
     long filesize = m_f->TellI();
     m_f->SeekI(currentPos, wxFromStart);


@@ -384,22 +379,15 @@ int wxIFFDecoder::ReadIFF()
     // main decoding loop. searches IFF chunks and handles them.
     // terminates when BODY chunk was found or dataptr ran over end of file
     //
     // main decoding loop. searches IFF chunks and handles them.
     // terminates when BODY chunk was found or dataptr ran over end of file
     //

-    bool BMHDok = false, CMAPok = false, CAMGok = false;
+    bool BMHDok = false, CAMGok = false;

     int bmhd_width = 0, bmhd_height = 0, bmhd_bitplanes = 0, bmhd_transcol = -1;
     int bmhd_width = 0, bmhd_height = 0, bmhd_bitplanes = 0, bmhd_transcol = -1;

-    byte bmhd_masking = 0, bmhd_compression = 0;
+    byte bmhd_compression = 0;

     long camg_viewmode = 0;
     int colors = 0;
     while (dataptr + 8 <= dataend) {
     // get chunk length and make even
     long camg_viewmode = 0;
     int colors = 0;
     while (dataptr + 8 <= dataend) {
     // get chunk length and make even

-    size_t chunkLen = (iff_getlong(dataptr + 4) + 1) & 0xfffffffe;
-#ifdef __VMS
-       // Silence compiler warning
-       int chunkLen_;
-       chunkLen_ = chunkLen;
-       if (chunkLen_ < 0) {     // format error?
-#else
-       if (chunkLen < 0) {     // format error?
-#endif
+    long chunkLen = (iff_getlong(dataptr + 4) + 1) & 0xfffffffe;
+    if (chunkLen < 0) {     // format error?

          break;
     }
     bool truncated = (dataptr + 8 + chunkLen > dataend);
          break;
     }
     bool truncated = (dataptr + 8 + chunkLen > dataend);


@@ -411,7 +399,7 @@ int wxIFFDecoder::ReadIFF()
         bmhd_width = iff_getword(dataptr + 8);      // width of picture
         bmhd_height= iff_getword(dataptr + 8 + 2);  // height of picture
         bmhd_bitplanes = *(dataptr + 8 + 8);        // # of bitplanes
         bmhd_width = iff_getword(dataptr + 8);      // width of picture
         bmhd_height= iff_getword(dataptr + 8 + 2);  // height of picture
         bmhd_bitplanes = *(dataptr + 8 + 8);        // # of bitplanes

-        bmhd_masking  = *(dataptr + 8 + 9);
+        // bmhd_masking  = *(dataptr + 8 + 9); -- unused currently

         bmhd_compression = *(dataptr + 8 + 10);     // get compression
         bmhd_transcol    = iff_getword(dataptr + 8 + 12);
         BMHDok = true;                              // got BMHD
         bmhd_compression = *(dataptr + 8 + 10);     // get compression
         bmhd_transcol    = iff_getword(dataptr + 8 + 12);
         BMHDok = true;                              // got BMHD


@@ -445,7 +433,6 @@ int wxIFFDecoder::ReadIFF()
         wxLogTrace(_T("iff"), _T("Read %d colors from IFF file."),
             colors);
 
         wxLogTrace(_T("iff"), _T("Read %d colors from IFF file."),
             colors);
 

-        CMAPok = true;                              // got CMAP

         dataptr += 8 + chunkLen;                    // to next chunk
     } else if (strncmp((char *)dataptr, "CAMG", 4) == 0) { // CAMG ?
         if (chunkLen < 4 || truncated) {
         dataptr += 8 + chunkLen;                    // to next chunk
     } else if (strncmp((char *)dataptr, "CAMG", 4) == 0) { // CAMG ?
         if (chunkLen < 4 || truncated) {