don't test for things which bakefile already tests for (STRIP, RANLIB, INSTALL, WINDR...

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

diff --git a/src/common/imagjpeg.cpp b/src/common/imagjpeg.cpp
index fed0d78859b8eca8616c7f53ac577faaad5dde6b..86dfa2da770a10349398879cb5c857a902dcb081 100644 (file)
--- a/src/common/imagjpeg.cpp
+++ b/src/common/imagjpeg.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     wxImage JPEG handler
 // Author:      Vaclav Slavik
 // RCS-ID:      $Id$
 // Purpose:     wxImage JPEG handler
 // Author:      Vaclav Slavik
 // RCS-ID:      $Id$


@@ -7,35 +7,34 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "imagjpeg.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 && wxUSE_LIBJPEG
 
 #include "wx/imagjpeg.h"
 #if wxUSE_IMAGE && wxUSE_LIBJPEG
 
 #include "wx/imagjpeg.h"

-#include "wx/bitmap.h"
-#include "wx/debug.h"
-#include "wx/log.h"
-#include "wx/app.h"
-
-// NB: Some compilers define boolean type in Windows headers
-//     (e.g. Watcom C++, but not Open Watcom).
-//     This causes a conflict with jmorecfg.h header from libjpeg, so we have
-//     to make sure libjpeg won't try to define boolean itself. This is done by
-//     defining HAVE_BOOLEAN.
-#if defined(__WXMSW__) && (defined(__MWERKS__) || defined(__DIGITALMARS__) || (defined(__WATCOMC__) && __WATCOMC__ < 1200))
+
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/intl.h"
+    #include "wx/bitmap.h"
+    #include "wx/module.h"
+#endif
+
+// A hack based on one from tif_jpeg.c to overcome the problem on Windows
+// of rpcndr.h defining boolean with a different type to the jpeg headers.
+// 
+// This hack is only necessary for an external jpeg library, the builtin one
+// usually used on Windows doesn't use the type boolean, so always works.
+//
+#ifdef wxHACK_BOOLEAN

     #define HAVE_BOOLEAN
     #define HAVE_BOOLEAN

-    #include "wx/msw/wrapwin.h"
+    #define boolean wxHACK_BOOLEAN

 #endif
 
 extern "C"
 #endif
 
 extern "C"


@@ -46,10 +45,12 @@ extern "C"
     #include "jpeglib.h"
 }
 
     #include "jpeglib.h"
 }
 

+#ifndef HAVE_WXJPEG_BOOLEAN
+typedef boolean wxjpeg_boolean;
+#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"

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


@@ -99,11 +100,14 @@ typedef struct {
 
 typedef wx_source_mgr * wx_src_ptr;
 
 
 typedef wx_source_mgr * wx_src_ptr;
 

+extern "C"
+{
+

 CPP_METHODDEF(void) wx_init_source ( j_decompress_ptr WXUNUSED(cinfo) )
 {
 }
 
 CPP_METHODDEF(void) wx_init_source ( j_decompress_ptr WXUNUSED(cinfo) )
 {
 }
 

-CPP_METHODDEF(boolean) wx_fill_input_buffer ( j_decompress_ptr cinfo )
+CPP_METHODDEF(wxjpeg_boolean) wx_fill_input_buffer ( j_decompress_ptr cinfo )

 {
     wx_src_ptr src = (wx_src_ptr) cinfo->src;
 
 {
     wx_src_ptr src = (wx_src_ptr) cinfo->src;
 


@@ -167,12 +171,22 @@ CPP_METHODDEF(void) wx_error_exit (j_common_ptr cinfo)
 
   /* Always display the message. */
   /* We could postpone this until after returning, if we chose. */
 
   /* Always display the message. */
   /* We could postpone this until after returning, if we chose. */

-  if (cinfo->err->output_message) (*cinfo->err->output_message) (cinfo);
+  (*cinfo->err->output_message) (cinfo);

 
   /* Return control to the setjmp point */
   longjmp(myerr->setjmp_buffer, 1);
 }
 
 
   /* Return control to the setjmp point */
   longjmp(myerr->setjmp_buffer, 1);
 }
 

+/*
+ * This will replace the standard output_message method when the user
+ * wants us to be silent (verbose==false). We must have such method instead of
+ * simply using NULL for cinfo->err->output_message because it's called
+ * unconditionally from within libjpeg when there's "garbage input".
+ */
+CPP_METHODDEF(void) wx_ignore_message (j_common_ptr WXUNUSED(cinfo))
+{
+}
+

 void wx_jpeg_io_src( j_decompress_ptr cinfo, wxInputStream& infile )
 {
     wx_src_ptr src;
 void wx_jpeg_io_src( j_decompress_ptr cinfo, wxInputStream& infile )
 {
     wx_src_ptr src;


@@ -195,6 +209,23 @@ void wx_jpeg_io_src( j_decompress_ptr cinfo, wxInputStream& infile )
     src->pub.term_source = wx_term_source;
 }
 
     src->pub.term_source = wx_term_source;
 }
 

+} // extern "C"
+
+static inline void wx_cmyk_to_rgb(unsigned char* rgb, const unsigned char* cmyk)
+{
+    register int k = 255 - cmyk[3];
+    register int k2 = cmyk[3];
+    register int c;
+
+    c = k + k2 * (255 - cmyk[0]) / 255;
+    rgb[0] = (unsigned char)((c > 255) ? 0 : (255 - c));
+
+    c = k + k2 * (255 - cmyk[1]) / 255;
+    rgb[1] = (unsigned char)((c > 255) ? 0 : (255 - c));
+
+    c = k + k2 * (255 - cmyk[2]) / 255;
+    rgb[2] = (unsigned char)((c > 255) ? 0 : (255 - c));
+}

 
 // temporarily disable the warning C4611 (interaction between '_setjmp' and
 // C++ object destruction is non-portable) - I don't see any dtors here
 
 // temporarily disable the warning C4611 (interaction between '_setjmp' and
 // C++ object destruction is non-portable) - I don't see any dtors here


@@ -206,15 +237,14 @@ bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
 {
     struct jpeg_decompress_struct cinfo;
     struct wx_error_mgr jerr;
 {
     struct jpeg_decompress_struct cinfo;
     struct wx_error_mgr jerr;

-    JSAMPARRAY tempbuf;

     unsigned char *ptr;
     unsigned char *ptr;

-    unsigned stride;

 
     image->Destroy();
     cinfo.err = jpeg_std_error( &jerr.pub );
     jerr.pub.error_exit = wx_error_exit;
 
 
     image->Destroy();
     cinfo.err = jpeg_std_error( &jerr.pub );
     jerr.pub.error_exit = wx_error_exit;
 

-    if (!verbose) cinfo.err->output_message=NULL;
+    if (!verbose)
+        cinfo.err->output_message = wx_ignore_message;

 
     /* Establish the setjmp return context for wx_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer)) {
 
     /* Establish the setjmp return context for wx_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer)) {


@@ -232,7 +262,19 @@ bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
     jpeg_create_decompress( &cinfo );
     wx_jpeg_io_src( &cinfo, stream );
     jpeg_read_header( &cinfo, TRUE );
     jpeg_create_decompress( &cinfo );
     wx_jpeg_io_src( &cinfo, stream );
     jpeg_read_header( &cinfo, TRUE );

-    cinfo.out_color_space = JCS_RGB;
+
+    int bytesPerPixel;
+    if ((cinfo.out_color_space == JCS_CMYK) || (cinfo.out_color_space == JCS_YCCK))
+    {
+        cinfo.out_color_space = JCS_CMYK;
+        bytesPerPixel = 4;
+    }
+    else // all the rest is treated as RGB
+    {
+        cinfo.out_color_space = JCS_RGB;
+        bytesPerPixel = 3;
+    }
+

     jpeg_start_decompress( &cinfo );
 
     image->Create( cinfo.image_width, cinfo.image_height );
     jpeg_start_decompress( &cinfo );
 
     image->Create( cinfo.image_width, cinfo.image_height );


@@ -243,15 +285,31 @@ bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
     }
     image->SetMask( false );
     ptr = image->GetData();
     }
     image->SetMask( false );
     ptr = image->GetData();

-    stride = cinfo.output_width * 3;
-    tempbuf = (*cinfo.mem->alloc_sarray)
-        ((j_common_ptr) &cinfo, JPOOL_IMAGE, stride, 1 );

 
 

-    while ( cinfo.output_scanline < cinfo.output_height ) {
+    unsigned stride = cinfo.output_width * bytesPerPixel;
+    JSAMPARRAY tempbuf = (*cinfo.mem->alloc_sarray)
+                            ((j_common_ptr) &cinfo, JPOOL_IMAGE, stride, 1 );
+
+    while ( cinfo.output_scanline < cinfo.output_height )
+    {

         jpeg_read_scanlines( &cinfo, tempbuf, 1 );
         jpeg_read_scanlines( &cinfo, tempbuf, 1 );

-        memcpy( ptr, tempbuf[0], stride );
-        ptr += stride;
+        if (cinfo.out_color_space == JCS_RGB)
+        {
+            memcpy( ptr, tempbuf[0], stride );
+            ptr += stride;
+        }
+        else // CMYK
+        {
+            const unsigned char* inptr = (const unsigned char*) tempbuf[0];
+            for (size_t i = 0; i < cinfo.output_width; i++)
+            {
+                wx_cmyk_to_rgb(ptr, inptr);
+                ptr += 3;
+                inptr += 4;
+            }
+        }

     }
     }

+

     jpeg_finish_decompress( &cinfo );
     jpeg_destroy_decompress( &cinfo );
     return true;
     jpeg_finish_decompress( &cinfo );
     jpeg_destroy_decompress( &cinfo );
     return true;


@@ -268,6 +326,9 @@ typedef wx_destination_mgr * wx_dest_ptr;
 
 #define OUTPUT_BUF_SIZE  4096    /* choose an efficiently fwrite'able size */
 
 
 #define OUTPUT_BUF_SIZE  4096    /* choose an efficiently fwrite'able size */
 

+extern "C"
+{
+

 CPP_METHODDEF(void) wx_init_destination (j_compress_ptr cinfo)
 {
     wx_dest_ptr dest = (wx_dest_ptr) cinfo->dest;
 CPP_METHODDEF(void) wx_init_destination (j_compress_ptr cinfo)
 {
     wx_dest_ptr dest = (wx_dest_ptr) cinfo->dest;


@@ -280,7 +341,7 @@ CPP_METHODDEF(void) wx_init_destination (j_compress_ptr cinfo)
     dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
 }
 
     dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
 }
 

-CPP_METHODDEF(boolean) wx_empty_output_buffer (j_compress_ptr cinfo)
+CPP_METHODDEF(wxjpeg_boolean) wx_empty_output_buffer (j_compress_ptr cinfo)

 {
     wx_dest_ptr dest = (wx_dest_ptr) cinfo->dest;
 
 {
     wx_dest_ptr dest = (wx_dest_ptr) cinfo->dest;
 


@@ -316,6 +377,8 @@ GLOBAL(void) wx_jpeg_io_dest (j_compress_ptr cinfo, wxOutputStream& outfile)
     dest->stream = &outfile;
 }
 
     dest->stream = &outfile;
 }
 

+} // extern "C"
+

 bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
 {
     struct jpeg_compress_struct cinfo;
 bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
 {
     struct jpeg_compress_struct cinfo;


@@ -327,7 +390,8 @@ bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
     cinfo.err = jpeg_std_error(&jerr.pub);
     jerr.pub.error_exit = wx_error_exit;
 
     cinfo.err = jpeg_std_error(&jerr.pub);
     jerr.pub.error_exit = wx_error_exit;
 

-    if (!verbose) cinfo.err->output_message=NULL;
+    if (!verbose)
+        cinfo.err->output_message = wx_ignore_message;

 
     /* Establish the setjmp return context for wx_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer))
 
     /* Establish the setjmp return context for wx_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer))


@@ -360,37 +424,16 @@ bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbo
         jpeg_set_quality(&cinfo, image->GetOptionInt(wxIMAGE_OPTION_QUALITY), TRUE);
 
     // set the resolution fields in the output file
         jpeg_set_quality(&cinfo, image->GetOptionInt(wxIMAGE_OPTION_QUALITY), TRUE);
 
     // set the resolution fields in the output file

-    UINT16 resX,
-           resY;
-    if ( image->HasOption(wxIMAGE_OPTION_RESOLUTIONX) &&
-         image->HasOption(wxIMAGE_OPTION_RESOLUTIONY) )
-    {
-        resX = image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX);
-        resY = image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY);
-    }
-    else if ( image->HasOption(wxIMAGE_OPTION_RESOLUTION) )
-    {
-        resX =
-        resY = image->GetOptionInt(wxIMAGE_OPTION_RESOLUTION);
-    }
-    else
-    {
-        resX =
-        resY = 0;
-    }
-
-    if ( resX && resY )
+    int resX, resY;
+    wxImageResolution res = GetResolutionFromOptions(*image, &resX, &resY);
+    if ( res != wxIMAGE_RESOLUTION_NONE )

     {
         cinfo.X_density = resX;
         cinfo.Y_density = resY;
     {
         cinfo.X_density = resX;
         cinfo.Y_density = resY;

-    }

 
 

-    // sets the resolution unit field in the output file
-    // wxIMAGE_RESOLUTION_INCHES for inches
-    // wxIMAGE_RESOLUTION_CM for centimeters
-    if ( image->HasOption(wxIMAGE_OPTION_RESOLUTIONUNIT) )
-    {
-        cinfo.density_unit = (UINT8)image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONUNIT);
+        // it so happens that wxIMAGE_RESOLUTION_INCHES/CM values are the same
+        // ones as used by libjpeg, so we can assign them directly
+        cinfo.density_unit = res;

     }
 
     jpeg_start_compress(&cinfo, TRUE);
     }
 
     jpeg_start_compress(&cinfo, TRUE);


@@ -424,9 +467,3 @@ bool wxJPEGHandler::DoCanRead( wxInputStream& stream )
 #endif   // wxUSE_STREAMS
 
 #endif   // wxUSE_LIBJPEG
 #endif   // wxUSE_STREAMS
 
 #endif   // wxUSE_LIBJPEG

-
-
-
-
-
-