Pass length including the null-terminator to cWC2MB

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

diff --git a/src/common/imagbmp.cpp b/src/common/imagbmp.cpp
index 09b1a9387f26a6e326ae09b99a93008b95cb4312..5f45ba920795ad8182929baeaf165edb566d44ee 100644 (file)
--- a/src/common/imagbmp.cpp
+++ b/src/common/imagbmp.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        imagbmp.cpp
+// Name:        src/common/imagbmp.cpp

 // Purpose:     wxImage BMP,ICO and CUR handlers
 // Author:      Robert Roebling, Chris Elliott
 // RCS-ID:      $Id$
 // Purpose:     wxImage BMP,ICO and CUR handlers
 // Author:      Robert Roebling, Chris Elliott
 // RCS-ID:      $Id$


@@ -7,31 +7,32 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "imagbmp.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
 

-#include "wx/defs.h"
-

 #if wxUSE_IMAGE
 
 #include "wx/imagbmp.h"
 #if wxUSE_IMAGE
 
 #include "wx/imagbmp.h"

-#include "wx/bitmap.h"
-#include "wx/debug.h"
-#include "wx/log.h"
-#include "wx/app.h"
+
+#ifndef WX_PRECOMP
+    #ifdef __WXMSW__
+        #include "wx/msw/wrapwin.h"
+    #endif
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/bitmap.h"
+    #include "wx/palette.h"
+    #include "wx/intl.h"
+#endif
+

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

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

 #include "wx/quantize.h"
 #include "wx/quantize.h"

+#include "wx/anidecod.h"

 
 // For memcpy
 #include <string.h>
 
 // For memcpy
 #include <string.h>


@@ -42,10 +43,6 @@
 #endif
 #endif
 
 #endif
 #endif
 

-#ifdef __WXMSW__
-#include "wx/msw/wrapwin.h"
-#endif
-

 //-----------------------------------------------------------------------------
 // wxBMPHandler
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // wxBMPHandler
 //-----------------------------------------------------------------------------


@@ -273,16 +270,16 @@ bool wxBMPHandler::SaveDib(wxImage *image,
     else if ( (format == wxBMP_8BPP_GREY) || (format == wxBMP_8BPP_RED) ||
               (format == wxBMP_1BPP_BW) )
     {
     else if ( (format == wxBMP_8BPP_GREY) || (format == wxBMP_8BPP_RED) ||
               (format == wxBMP_1BPP_BW) )
     {

-        int i;

         rgbquad = new wxUint8 [palette_size*4];
 
         rgbquad = new wxUint8 [palette_size*4];
 

-        for (i = 0; i < palette_size; i++)
+        for ( int i = 0; i < palette_size; i++ )

         {
         {

-            // if 1BPP_BW then just 0 and 255 then exit
-            if (( i > 0) && (format == wxBMP_1BPP_BW)) i = 255;
-            rgbquad[i*4] = i;
-            rgbquad[i*4+1] = i;
-            rgbquad[i*4+2] = i;
+            // if 1BPP_BW then the value should be either 0 or 255
+            wxUint8 c = (wxUint8)((i > 0) && (format == wxBMP_1BPP_BW) ? 255 : i);
+
+            rgbquad[i*4] =
+            rgbquad[i*4+1] =
+            rgbquad[i*4+2] = c;

             rgbquad[i*4+3] = 0;
         }
     }
             rgbquad[i*4+3] = 0;
         }
     }


@@ -336,9 +333,9 @@ bool wxBMPHandler::SaveDib(wxImage *image,
             {
                 pixel = 3*(y*width + x);
 #if wxUSE_PALETTE
             {
                 pixel = 3*(y*width + x);
 #if wxUSE_PALETTE

-                buffer[x] = palette->GetPixel( data[pixel],
-                                               data[pixel+1],
-                                               data[pixel+2] );
+                buffer[x] = (wxUint8)palette->GetPixel( data[pixel],
+                                                        data[pixel+1],
+                                                        data[pixel+2] );

 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x] = 0;
 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x] = 0;


@@ -370,7 +367,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
 
                 // fill buffer, ignore if > width
 #if wxUSE_PALETTE
 
                 // fill buffer, ignore if > width
 #if wxUSE_PALETTE

-                buffer[x/2] =
+                buffer[x/2] = (wxUint8)(

                     ((wxUint8)palette->GetPixel(data[pixel],
                                                 data[pixel+1],
                                                 data[pixel+2]) << 4) |
                     ((wxUint8)palette->GetPixel(data[pixel],
                                                 data[pixel+1],
                                                 data[pixel+2]) << 4) |


@@ -378,7 +375,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
                      ? 0
                      : ((wxUint8)palette->GetPixel(data[pixel+3],
                                                    data[pixel+4],
                      ? 0
                      : ((wxUint8)palette->GetPixel(data[pixel+3],
                                                    data[pixel+4],

-                                                   data[pixel+5]) ));
+                                                   data[pixel+5]) ))    );

 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x/2] = 0;
 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x/2] = 0;


@@ -392,14 +389,15 @@ bool wxBMPHandler::SaveDib(wxImage *image,
                 pixel = 3*(y*width + x);
 
 #if wxUSE_PALETTE
                 pixel = 3*(y*width + x);
 
 #if wxUSE_PALETTE

-                buffer[x/8] = ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) |
+                buffer[x/8] = (wxUint8)(
+                                           ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) |

                     (((x+1) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+3], data[pixel+4], data[pixel+5]) << 6)) |
                     (((x+2) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+6], data[pixel+7], data[pixel+8]) << 5)) |
                     (((x+3) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+9], data[pixel+10], data[pixel+11]) << 4)) |
                     (((x+4) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+12], data[pixel+13], data[pixel+14]) << 3)) |
                     (((x+5) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+15], data[pixel+16], data[pixel+17]) << 2)) |
                     (((x+6) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+18], data[pixel+19], data[pixel+20]) << 1)) |
                     (((x+1) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+3], data[pixel+4], data[pixel+5]) << 6)) |
                     (((x+2) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+6], data[pixel+7], data[pixel+8]) << 5)) |
                     (((x+3) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+9], data[pixel+10], data[pixel+11]) << 4)) |
                     (((x+4) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+12], data[pixel+13], data[pixel+14]) << 3)) |
                     (((x+5) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+15], data[pixel+16], data[pixel+17]) << 2)) |
                     (((x+6) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+18], data[pixel+19], data[pixel+20]) << 1)) |

-                    (((x+7) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+21], data[pixel+22], data[pixel+23])     ));
+                    (((x+7) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+21], data[pixel+22], data[pixel+23])     ))    );

 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x/8] = 0;
 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x/8] = 0;


@@ -412,7 +410,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
             {
                 pixel = 3*(y*width + x);
 
             {
                 pixel = 3*(y*width + x);
 

-                buffer[x/8] =
+                buffer[x/8] = (wxUint8)(

                                           (((wxUint8)(data[pixel]   /128.)) << 7) |
                    (((x+1) > width) ? 0 : (((wxUint8)(data[pixel+3] /128.)) << 6)) |
                    (((x+2) > width) ? 0 : (((wxUint8)(data[pixel+6] /128.)) << 5)) |
                                           (((wxUint8)(data[pixel]   /128.)) << 7) |
                    (((x+1) > width) ? 0 : (((wxUint8)(data[pixel+3] /128.)) << 6)) |
                    (((x+2) > width) ? 0 : (((wxUint8)(data[pixel+6] /128.)) << 5)) |


@@ -420,7 +418,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
                    (((x+4) > width) ? 0 : (((wxUint8)(data[pixel+12]/128.)) << 3)) |
                    (((x+5) > width) ? 0 : (((wxUint8)(data[pixel+15]/128.)) << 2)) |
                    (((x+6) > width) ? 0 : (((wxUint8)(data[pixel+18]/128.)) << 1)) |
                    (((x+4) > width) ? 0 : (((wxUint8)(data[pixel+12]/128.)) << 3)) |
                    (((x+5) > width) ? 0 : (((wxUint8)(data[pixel+15]/128.)) << 2)) |
                    (((x+6) > width) ? 0 : (((wxUint8)(data[pixel+18]/128.)) << 1)) |

-                   (((x+7) > width) ? 0 : (((wxUint8)(data[pixel+21]/128.))     ));
+                   (((x+7) > width) ? 0 : (((wxUint8)(data[pixel+21]/128.))     ))    );

             }
         }
 
             }
         }
 


@@ -517,9 +515,9 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
             else
             {
                 //used in reading .ico file mask
             else
             {
                 //used in reading .ico file mask

-                r[j] = cmap[j].r = j * 255;
-                g[j] = cmap[j].g = j * 255;
-                b[j] = cmap[j].b = j * 255;
+                r[j] = cmap[j].r =
+                g[j] = cmap[j].g =
+                b[j] = cmap[j].b = ( j ? 255 : 0 );

             }
         }
 
             }
         }
 


@@ -669,8 +667,8 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                                     {
                                         ++readBytes ;
                                         aByte = stream.GetC();
                                     {
                                         ++readBytes ;
                                         aByte = stream.GetC();

-                                        nibble[0] = ( (aByte & 0xF0) >> 4 ) ;
-                                        nibble[1] = ( aByte & 0x0F ) ;
+                                        nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ;
+                                        nibble[1] = (wxUint8)( aByte & 0x0F ) ;

                                     }
                                     ptr[poffset    ] = cmap[nibble[k%2]].r;
                                     ptr[poffset + 1] = cmap[nibble[k%2]].g;
                                     }
                                     ptr[poffset    ] = cmap[nibble[k%2]].r;
                                     ptr[poffset + 1] = cmap[nibble[k%2]].g;


@@ -686,8 +684,8 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                         else
                         {
                             wxUint8 nibble[2] ;
                         else
                         {
                             wxUint8 nibble[2] ;

-                            nibble[0] = ( (aByte & 0xF0) >> 4 ) ;
-                            nibble[1] = ( aByte & 0x0F ) ;
+                            nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ;
+                            nibble[1] = (wxUint8)( aByte & 0x0F ) ;

 
                             for ( int l = 0; l < first && column < width; l++ )
                             {
 
                             for ( int l = 0; l < first && column < width; l++ )
                             {


@@ -797,11 +795,11 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                    to retrieve the color data out of the word.  Then
                    shift it left by (8 - number of bits) such that
                    the image has the proper dynamic range */
                    to retrieve the color data out of the word.  Then
                    shift it left by (8 - number of bits) such that
                    the image has the proper dynamic range */

-                temp = (aWord & rmask) >> rshift << (8-rbits);
+                temp = (unsigned char)((aWord & rmask) >> rshift << (8-rbits));

                 ptr[poffset] = temp;
                 ptr[poffset] = temp;

-                temp = (aWord & gmask) >> gshift << (8-gbits);
+                temp = (unsigned char)((aWord & gmask) >> gshift << (8-gbits));

                 ptr[poffset + 1] = temp;
                 ptr[poffset + 1] = temp;

-                temp = (aWord & bmask) >> bshift << (8-bbits);
+                temp = (unsigned char)((aWord & bmask) >> bshift << (8-bbits));

                 ptr[poffset + 2] = temp;
                 column++;
             }
                 ptr[poffset + 2] = temp;
                 column++;
             }


@@ -811,11 +809,11 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                 stream.Read(&aDword, 4);
                 aDword = wxINT32_SWAP_ON_BE(aDword);
                 linepos += 4;
                 stream.Read(&aDword, 4);
                 aDword = wxINT32_SWAP_ON_BE(aDword);
                 linepos += 4;

-                temp = (aDword & rmask) >> rshift;
+                temp = (unsigned char)((aDword & rmask) >> rshift);

                 ptr[poffset] = temp;
                 ptr[poffset] = temp;

-                temp = (aDword & gmask) >> gshift;
+                temp = (unsigned char)((aDword & gmask) >> gshift);

                 ptr[poffset + 1] = temp;
                 ptr[poffset + 1] = temp;

-                temp = (aDword & bmask) >> bshift;
+                temp = (unsigned char)((aDword & bmask) >> bshift);

                 ptr[poffset + 2] = temp;
                 column++;
             }
                 ptr[poffset + 2] = temp;
                 column++;
             }


@@ -866,8 +864,8 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     offset = offset + wxINT32_SWAP_ON_BE(dbuf[2]);
 
     stream.Read(dbuf, 4 * 2);
     offset = offset + wxINT32_SWAP_ON_BE(dbuf[2]);
 
     stream.Read(dbuf, 4 * 2);

-    int width = (int)wxINT32_SWAP_ON_BE(dbuf[0]);
-    int height = (int)wxINT32_SWAP_ON_BE(dbuf[1]);
+    int width = wxINT32_SWAP_ON_BE((int)dbuf[0]);
+    int height = wxINT32_SWAP_ON_BE((int)dbuf[1]);

     if ( !IsBmp)height = height  / 2; // for icons divide by 2
 
     if ( width > 32767 )
     if ( !IsBmp)height = height  / 2; // for icons divide by 2
 
     if ( width > 32767 )


@@ -889,7 +887,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
             int planes = (int)wxUINT16_SWAP_ON_BE( aWord );
         */
     stream.Read(&aWord, 2);
             int planes = (int)wxUINT16_SWAP_ON_BE( aWord );
         */
     stream.Read(&aWord, 2);

-    int bpp = (int)wxUINT16_SWAP_ON_BE(aWord);
+    int bpp = wxUINT16_SWAP_ON_BE((int)aWord);

     if ( bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32 )
     {
         if (verbose)
     if ( bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32 )
     {
         if (verbose)


@@ -898,7 +896,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     }
 
     stream.Read(dbuf, 4 * 4);
     }
 
     stream.Read(dbuf, 4 * 4);

-    int comp = (int)wxINT32_SWAP_ON_BE(dbuf[0]);
+    int comp = wxINT32_SWAP_ON_BE((int)dbuf[0]);

     if ( comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 &&
          comp != BI_BITFIELDS )
     {
     if ( comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 &&
          comp != BI_BITFIELDS )
     {


@@ -908,7 +906,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     }
 
     stream.Read(dbuf, 4 * 2);
     }
 
     stream.Read(dbuf, 4 * 2);

-    int ncolors = (int)wxINT32_SWAP_ON_BE( dbuf[0] );
+    int ncolors = wxINT32_SWAP_ON_BE( (int)dbuf[0] );

     if (ncolors == 0)
         ncolors = 1 << bpp;
     /* some more sanity checks */
     if (ncolors == 0)
         ncolors = 1 << bpp;
     /* some more sanity checks */


@@ -926,7 +924,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
                     verbose, IsBmp, true) )
     {
         if (verbose)
                     verbose, IsBmp, true) )
     {
         if (verbose)

-            wxLogError( _("Error in reading image DIB .") );
+            wxLogError( _("Error in reading image DIB.") );

         return false;
     }
 
         return false;
     }
 


@@ -1022,7 +1020,7 @@ bool wxICOHandler::SaveFile(wxImage *image,
         return false;
     }
 
         return false;
     }
 

-    int images = 1; // only generate one image
+    const int images = 1; // only generate one image

 
     // VS: This is a hack of sort - since ICO and CUR files are almost
     //     identical, we have all the meat in wxICOHandler and check for
 
     // VS: This is a hack of sort - since ICO and CUR files are almost
     //     identical, we have all the meat in wxICOHandler and check for


@@ -1036,8 +1034,8 @@ bool wxICOHandler::SaveFile(wxImage *image,
 
     ICONDIR IconDir;
     IconDir.idReserved = 0;
 
     ICONDIR IconDir;
     IconDir.idReserved = 0;

-    IconDir.idType = wxUINT16_SWAP_ON_BE(type);
-    IconDir.idCount = wxUINT16_SWAP_ON_BE(images);
+    IconDir.idType = wxUINT16_SWAP_ON_BE((wxUint16)type);
+    IconDir.idCount = wxUINT16_SWAP_ON_BE((wxUint16)images);

     stream.Write(&IconDir.idReserved, sizeof(IconDir.idReserved));
     stream.Write(&IconDir.idType, sizeof(IconDir.idType));
     stream.Write(&IconDir.idCount, sizeof(IconDir.idCount));
     stream.Write(&IconDir.idReserved, sizeof(IconDir.idReserved));
     stream.Write(&IconDir.idType, sizeof(IconDir.idType));
     stream.Write(&IconDir.idCount, sizeof(IconDir.idCount));


@@ -1050,7 +1048,7 @@ bool wxICOHandler::SaveFile(wxImage *image,
 
     // for each iamage write a description ICONDIRENTRY:
     ICONDIRENTRY icondirentry;
 
     // for each iamage write a description ICONDIRENTRY:
     ICONDIRENTRY icondirentry;

-    for (int i = 0; i < images; i++)
+    for (int img = 0; img < images; img++)

     {
         wxImage mask;
 
     {
         wxImage mask;
 


@@ -1117,7 +1115,7 @@ bool wxICOHandler::SaveFile(wxImage *image,
         }
         wxUint32 Size = cStream.GetSize();
 
         }
         wxUint32 Size = cStream.GetSize();
 

-        // wxCountingOutputStream::Ok() always returns true for now and this
+        // wxCountingOutputStream::IsOk() always returns true for now and this

         // "if" provokes VC++ warnings in optimized build
 #if 0
         if ( !cStream.Ok() )
         // "if" provokes VC++ warnings in optimized build
 #if 0
         if ( !cStream.Ok() )


@@ -1130,8 +1128,8 @@ bool wxICOHandler::SaveFile(wxImage *image,
 
         offset = offset + sizeof(ICONDIRENTRY);
 
 
         offset = offset + sizeof(ICONDIRENTRY);
 

-        icondirentry.bWidth = image->GetWidth();
-        icondirentry.bHeight = 2 * image->GetHeight();
+        icondirentry.bWidth = (wxUint8)image->GetWidth();
+        icondirentry.bHeight = (wxUint8)(2 * image->GetHeight());

         icondirentry.bColorCount = 0;
         icondirentry.bReserved = 0;
         icondirentry.wPlanes = wxUINT16_SWAP_ON_BE(1);
         icondirentry.bColorCount = 0;
         icondirentry.bReserved = 0;
         icondirentry.wPlanes = wxUINT16_SWAP_ON_BE(1);


@@ -1327,160 +1325,28 @@ IMPLEMENT_DYNAMIC_CLASS(wxANIHandler, wxCURHandler)
 #if wxUSE_STREAMS
 
 bool wxANIHandler::LoadFile(wxImage *image, wxInputStream& stream,
 #if wxUSE_STREAMS
 
 bool wxANIHandler::LoadFile(wxImage *image, wxInputStream& stream,

-                            bool verbose, int index)
+                            bool WXUNUSED(verbose), int index)

 {
 {

-    wxInt32 FCC1, FCC2;
-    wxUint32 datalen;
-
-    wxInt32 riff32;
-    memcpy( &riff32, "RIFF", 4 );
-    wxInt32 list32;
-    memcpy( &list32, "LIST", 4 );
-    wxInt32 ico32;
-    memcpy( &ico32, "icon", 4 );
-    int iIcon = 0;
-
-    stream.SeekI(0);
-    stream.Read(&FCC1, 4);
-    if ( FCC1 != riff32 )
+    wxANIDecoder decoder;
+    if (!decoder.Load(stream))

         return false;
 
         return false;
 

-    // we have a riff file:
-    while (stream.IsOk())
-    {
-        // we always have a data size
-        stream.Read(&datalen, 4);
-        datalen = wxINT32_SWAP_ON_BE(datalen) ;
-        //data should be padded to make even number of bytes
-        if (datalen % 2 == 1) datalen ++ ;
-        //now either data or a FCC
-        if ( (FCC1 == riff32) || (FCC1 == list32) )
-        {
-            stream.Read(&FCC2, 4);
-        }
-        else
-        {
-            if (FCC1 == ico32 && iIcon >= index)
-            {
-                return DoLoadFile(image, stream, verbose, -1);
-            }
-            else
-            {
-                stream.SeekI(stream.TellI() + datalen);
-                if ( FCC1 == ico32 )
-                    iIcon ++;
-            }
-        }
-
-        // try to read next data chunk:
-        stream.Read(&FCC1, 4);
-    }
-    return false;
+    return decoder.ConvertToImage(index != -1 ? (size_t)index : 0, image);

 }
 
 bool wxANIHandler::DoCanRead(wxInputStream& stream)
 {
 }
 
 bool wxANIHandler::DoCanRead(wxInputStream& stream)
 {

-    wxInt32 FCC1, FCC2;
-    wxUint32 datalen ;
-
-    wxInt32 riff32;
-    memcpy( &riff32, "RIFF", 4 );
-    wxInt32 list32;
-    memcpy( &list32, "LIST", 4 );
-    wxInt32 ico32;
-    memcpy( &ico32, "icon", 4 );
-    wxInt32 anih32;
-    memcpy( &anih32, "anih", 4 );
-
-    stream.SeekI(0);
-    if ( !stream.Read(&FCC1, 4) )
-        return false;
-
-    if ( FCC1 != riff32 )
-        return false;
-
-    // we have a riff file:
-    while ( stream.IsOk() )
-    {
-        if ( FCC1 == anih32 )
-            return true;
-        // we always have a data size:
-        stream.Read(&datalen, 4);
-        datalen = wxINT32_SWAP_ON_BE(datalen) ;
-        //data should be padded to make even number of bytes
-        if (datalen % 2 == 1) datalen ++ ;
-        // now either data or a FCC:
-        if ( (FCC1 == riff32) || (FCC1 == list32) )
-        {
-            stream.Read(&FCC2, 4);
-        }
-        else
-        {
-            stream.SeekI(stream.TellI() + datalen);
-        }
-
-        // try to read next data chunk:
-        if ( !stream.Read(&FCC1, 4) )
-        {
-            // reading failed -- either EOF or IO error, bail out anyhow
-            return false;
-        }
-    }
-
-    return false;
+    wxANIDecoder decod;
+    return decod.CanRead(stream);

 }
 
 int wxANIHandler::GetImageCount(wxInputStream& stream)
 {
 }
 
 int wxANIHandler::GetImageCount(wxInputStream& stream)
 {

-    wxInt32 FCC1, FCC2;
-    wxUint32 datalen ;
-
-    wxInt32 riff32;
-    memcpy( &riff32, "RIFF", 4 );
-    wxInt32 list32;
-    memcpy( &list32, "LIST", 4 );
-    wxInt32 ico32;
-    memcpy( &ico32, "icon", 4 );
-    wxInt32 anih32;
-    memcpy( &anih32, "anih", 4 );
-
-    stream.SeekI(0);
-    stream.Read(&FCC1, 4);
-    if ( FCC1 != riff32 )
+    wxANIDecoder decoder;
+    if (!decoder.Load(stream))

         return wxNOT_FOUND;
 
         return wxNOT_FOUND;
 

-    // we have a riff file:
-    while ( stream.IsOk() )
-    {
-        // we always have a data size:
-        stream.Read(&datalen, 4);
-        datalen = wxINT32_SWAP_ON_BE(datalen) ;
-        //data should be padded to make even number of bytes
-        if (datalen % 2 == 1) datalen ++ ;
-        // now either data or a FCC:
-        if ( (FCC1 == riff32) || (FCC1 == list32) )
-        {
-            stream.Read(&FCC2, 4);
-        }
-        else
-        {
-            if ( FCC1 == anih32 )
-            {
-                wxUint32 *pData = new wxUint32[datalen/4];
-                stream.Read(pData, datalen);
-                int nIcons = wxINT32_SWAP_ON_BE(*(pData + 1));
-                delete[] pData;
-                return nIcons;
-            }
-            else
-                stream.SeekI(stream.TellI() + datalen);
-        }
-
-        // try to read next data chunk:
-        stream.Read(&FCC1, 4);
-    }
-
-    return wxNOT_FOUND;
+    return decoder.GetFrameCount();

 }
 
 #endif // wxUSE_STREAMS
 }
 
 #endif // wxUSE_STREAMS