// For JPEG library error handling
#include <setjmp.h>
-#ifdef __SALFORDC__
-#undef FAR
-#endif
-
// ----------------------------------------------------------------------------
// types
// ----------------------------------------------------------------------------
typedef wx_source_mgr * wx_src_ptr;
+extern "C"
+{
+
CPP_METHODDEF(void) wx_init_source ( j_decompress_ptr WXUNUSED(cinfo) )
{
}
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];
}
}
+ // set up resolution if available: it's part of optional JFIF APP0 chunk
+ if ( cinfo.saw_JFIF_marker )
+ {
+ image->SetOption(wxIMAGE_OPTION_RESOLUTIONX, cinfo.X_density);
+ image->SetOption(wxIMAGE_OPTION_RESOLUTIONY, cinfo.Y_density);
+
+ // we use the same values for this option as libjpeg so we don't need
+ // any conversion here
+ image->SetOption(wxIMAGE_OPTION_RESOLUTIONUNIT, cinfo.density_unit);
+ }
+
jpeg_finish_decompress( &cinfo );
jpeg_destroy_decompress( &cinfo );
return true;
#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;
dest->stream = &outfile;
}
+} // extern "C"
+
bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
{
struct jpeg_compress_struct cinfo;
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 = (UINT16)image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX);
- resY = (UINT16)image->GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY);
- }
- else if ( image->HasOption(wxIMAGE_OPTION_RESOLUTION) )
- {
- resX =
- resY = (UINT16)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;
- }
- // 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);