ping method almost there

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

diff --git a/src/common/imagjpeg.cpp b/src/common/imagjpeg.cpp
index b8f642502fd357e51ff0d132ad4a3994ffb19ea3..b2e4447a024f58272d3c88b5d560e71246b44aa9 100644 (file)
--- a/src/common/imagjpeg.cpp
+++ b/src/common/imagjpeg.cpp
@@ -10,10 +10,6 @@
 /*
    We don't put pragma implement in this file because it is already present in
    src/common/image.cpp
 /*
    We don't put pragma implement in this file because it is already present in
    src/common/image.cpp

-
-#ifdef __GNUG__
-#pragma implementation "image.h"
-#endif

 */
 
 // For compilers that support precompilation, includes "wx.h".
 */
 
 // For compilers that support precompilation, includes "wx.h".


@@ -23,16 +19,18 @@
 #pragma hdrstop
 #endif
 
 #pragma hdrstop
 #endif
 

+#include "wx/defs.h"
+
+#if wxUSE_LIBJPEG
+

 #include "wx/image.h"
 #include "wx/bitmap.h"
 #include "wx/debug.h"
 #include "wx/log.h"
 #include "wx/app.h"
 #include "wx/image.h"
 #include "wx/bitmap.h"
 #include "wx/debug.h"
 #include "wx/log.h"
 #include "wx/app.h"

-#if wxUSE_LIBJPEG
-extern "C" {
-#include <jpeglib.h>
+extern "C" { 
+#include "jpeglib.h"

 }
 }

-#endif

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


@@ -57,15 +55,12 @@ extern "C" {
 // wxJPEGHandler
 //-----------------------------------------------------------------------------
 
 // wxJPEGHandler
 //-----------------------------------------------------------------------------
 

-#if wxUSE_LIBJPEG
-

 #if !USE_SHARED_LIBRARIES
 IMPLEMENT_DYNAMIC_CLASS(wxJPEGHandler,wxImageHandler)
 #endif
 
 #if wxUSE_STREAMS
 
 #if !USE_SHARED_LIBRARIES
 IMPLEMENT_DYNAMIC_CLASS(wxJPEGHandler,wxImageHandler)
 #endif
 
 #if wxUSE_STREAMS
 

-

 //------------- JPEG Data Source Manager
 
 typedef struct {
 //------------- JPEG Data Source Manager
 
 typedef struct {


@@ -76,11 +71,11 @@ typedef struct {
 
 typedef my_source_mgr * my_src_ptr;
 
 
 typedef my_source_mgr * my_src_ptr;
 

-METHODDEF(void) my_init_source ( j_decompress_ptr cinfo )
+METHODDEF(void) my_init_source ( j_decompress_ptr WXUNUSED(cinfo) )

 {
 }
 
 {
 }
 

-METHODDEF(boolean) my_fill_input_buffer ( j_decompress_ptr cinfo )
+METHODDEF(boolean) my_fill_input_buffer ( j_decompress_ptr WXUNUSED(cinfo) )

 {
     return TRUE;
 }
 {
     return TRUE;
 }


@@ -111,10 +106,10 @@ void jpeg_wxio_src( j_decompress_ptr cinfo, wxInputStream& infile )
         src = (my_src_ptr) cinfo->src;
     }
     src = (my_src_ptr) cinfo->src;
         src = (my_src_ptr) cinfo->src;
     }
     src = (my_src_ptr) cinfo->src;

-    src->pub.bytes_in_buffer = infile.StreamSize(); /* forces fill_input_buffer on first read */
-    src->buffer = (JOCTET *) malloc (infile.StreamSize());
+    src->pub.bytes_in_buffer = infile.GetSize(); /* forces fill_input_buffer on first read */
+    src->buffer = (JOCTET *) malloc (infile.GetSize());

     src->pub.next_input_byte = src->buffer; /* until buffer loaded */
     src->pub.next_input_byte = src->buffer; /* until buffer loaded */

-    infile.Read(src->buffer, infile.StreamSize());
+    infile.Read(src->buffer, infile.GetSize());

     
     src->pub.init_source = my_init_source;
     src->pub.fill_input_buffer = my_fill_input_buffer;
     
     src->pub.init_source = my_init_source;
     src->pub.fill_input_buffer = my_fill_input_buffer;


@@ -146,7 +141,7 @@ my_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. */

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


@@ -154,7 +149,7 @@ my_error_exit (j_common_ptr cinfo)
 
 
 
 
 
 

-bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream )
+bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose )

 {
     struct jpeg_decompress_struct cinfo;
     struct my_error_mgr jerr;
 {
     struct jpeg_decompress_struct cinfo;
     struct my_error_mgr jerr;


@@ -166,12 +161,14 @@ bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream )
     cinfo.err = jpeg_std_error( &jerr.pub );
     jerr.pub.error_exit = my_error_exit;
 
     cinfo.err = jpeg_std_error( &jerr.pub );
     jerr.pub.error_exit = my_error_exit;
 

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

     /* Establish the setjmp return context for my_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer)) {
       /* If we get here, the JPEG code has signaled an error.
        * We need to clean up the JPEG object, close the input file, and return.
        */
     /* Establish the setjmp return context for my_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer)) {
       /* If we get here, the JPEG code has signaled an error.
        * We need to clean up the JPEG object, close the input file, and return.
        */

-      wxLogError(_("Couldn't load a JPEG image - probably file is corrupted."));
+      if (verbose) wxLogError(_("Couldn't load a JPEG image - probably file is corrupted."));

       jpeg_destroy_decompress(&cinfo);
       if (image->Ok()) image->Destroy();
       return FALSE;
       jpeg_destroy_decompress(&cinfo);
       if (image->Ok()) image->Destroy();
       return FALSE;


@@ -268,7 +265,7 @@ GLOBAL(void) jpeg_wxio_dest (j_compress_ptr cinfo, wxOutputStream& outfile)
     dest->stream = &outfile;
 }
 
     dest->stream = &outfile;
 }
 

-bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream )
+bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )

 {
     struct jpeg_compress_struct cinfo;
     struct my_error_mgr jerr;
 {
     struct jpeg_compress_struct cinfo;
     struct my_error_mgr jerr;


@@ -279,12 +276,14 @@ bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream )
     cinfo.err = jpeg_std_error(&jerr.pub);
     jerr.pub.error_exit = my_error_exit;
 
     cinfo.err = jpeg_std_error(&jerr.pub);
     jerr.pub.error_exit = my_error_exit;
 

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

     /* Establish the setjmp return context for my_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer)) {
       /* If we get here, the JPEG code has signaled an error.
        * We need to clean up the JPEG object, close the input file, and return.
        */
     /* Establish the setjmp return context for my_error_exit to use. */
     if (setjmp(jerr.setjmp_buffer)) {
       /* If we get here, the JPEG code has signaled an error.
        * We need to clean up the JPEG object, close the input file, and return.
        */

-      wxLogError(_("Couldn't save a JPEG image - probably file is corrupted."));
+      if (verbose) wxLogError(_("Couldn't save a JPEG image - probably file is corrupted."));

       jpeg_destroy_compress(&cinfo);
       return FALSE;
     }
       jpeg_destroy_compress(&cinfo);
       return FALSE;
     }


@@ -310,12 +309,20 @@ bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream )
     
     return TRUE;
 }
     
     return TRUE;
 }

-#endif // wxUSE_STREAMS

 
 

-#endif

 
 

-// wxUSE_LIBJPEG
+bool wxJPEGHandler::CanRead( wxInputStream& stream )
+{
+    unsigned char hdr[2];
+    
+    stream.Read(&hdr, 2);
+    stream.SeekI(-2, wxFromCurrent);
+    return (hdr[0] == 0xFF && hdr[1] == 0xD8);
+}
+
+#endif   // wxUSE_STREAMS

 
 

+#endif   // wxUSE_LIBJPEG