check that the version of __sync_sub_and_fetch that returns a value is supported...

[wxWidgets.git] / src / png / pngwio.c

diff --git a/src/png/pngwio.c b/src/png/pngwio.c
index 05fe6dd96b3309c191aec63bca5b96fa237b75eb..371a4fad624b8b57fa94a876b52fb9ff95c135d3 100644 (file)
--- a/src/png/pngwio.c
+++ b/src/png/pngwio.c
@@ -1,11 +1,11 @@
 
 /* pngwio.c - functions for data output
  *
 
 /* pngwio.c - functions for data output
  *

- * libpng 1.0.3 - January 14, 1999
+ * Last changed in libpng 1.2.13 November 13, 2006

  * For conditions of distribution and use, see copyright notice in png.h
  * For conditions of distribution and use, see copyright notice in png.h

- * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
- * Copyright (c) 1996, 1997 Andreas Dilger
- * Copyright (c) 1998, 1999 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)

  *
  * This file provides a location for all output.  Users who need
  * special handling are expected to write functions that have the same
  *
  * This file provides a location for all output.  Users who need
  * special handling are expected to write functions that have the same


@@ -17,6 +17,7 @@
 
 #define PNG_INTERNAL
 #include "png.h"
 
 #define PNG_INTERNAL
 #include "png.h"

+#ifdef PNG_WRITE_SUPPORTED

 
 /* Write the data to whatever output you are using.  The default routine
    writes to a file pointer.  Note that this routine sometimes gets called
 
 /* Write the data to whatever output you are using.  The default routine
    writes to a file pointer.  Note that this routine sometimes gets called


@@ -24,7 +25,7 @@
    buffering if you are using unbuffered writes.  This should never be asked
    to write more than 64K on a 16 bit machine.  */
 
    buffering if you are using unbuffered writes.  This should never be asked
    to write more than 64K on a 16 bit machine.  */
 

-void
+void /* PRIVATE */

 png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
    if (png_ptr->write_data_fn != NULL )
 png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
    if (png_ptr->write_data_fn != NULL )


@@ -39,21 +40,20 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
    write_data function and use it at run time with png_set_write_fn(), rather
    than changing the library. */
 #ifndef USE_FAR_KEYWORD
    write_data function and use it at run time with png_set_write_fn(), rather
    than changing the library. */
 #ifndef USE_FAR_KEYWORD

-#ifdef __VISAGECPP__
-static void _Optlink
+void PNGAPI

 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)

-#else
-static void
-png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
-#endif

 {
    png_uint_32 check;
 
 {
    png_uint_32 check;
 

-   check = fwrite(data, 1, length, (FILE *)(png_ptr->io_ptr));
+   if(png_ptr == NULL) return;
+#if defined(_WIN32_WCE)
+   if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
+      check = 0;
+#else
+   check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
+#endif

    if (check != length)
    if (check != length)

-   {

       png_error(png_ptr, "Write Error");
       png_error(png_ptr, "Write Error");

-   }

 }
 #else
 /* this is the model-independent version. Since the standard I/O library
 }
 #else
 /* this is the model-independent version. Since the standard I/O library


@@ -64,24 +64,25 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 #define NEAR_BUF_SIZE 1024
 #define MIN(a,b) (a <= b ? a : b)
 
 #define NEAR_BUF_SIZE 1024
 #define MIN(a,b) (a <= b ? a : b)
 

-#ifdef __VISAGECPP__
-static void _Optlink
+void PNGAPI

 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)

-#else
-static void
-png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
-#endif

 {
    png_uint_32 check;
    png_byte *near_data;  /* Needs to be "png_byte *" instead of "png_bytep" */
 {
    png_uint_32 check;
    png_byte *near_data;  /* Needs to be "png_byte *" instead of "png_bytep" */

-   FILE *io_ptr;
+   png_FILE_p io_ptr;

 
 

+   if(png_ptr == NULL) return;

    /* Check if data really is near. If so, use usual code. */
    near_data = (png_byte *)CVT_PTR_NOCHECK(data);
    /* Check if data really is near. If so, use usual code. */
    near_data = (png_byte *)CVT_PTR_NOCHECK(data);

-   io_ptr = (FILE *)CVT_PTR(png_ptr->io_ptr);
+   io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);

    if ((png_bytep)near_data == data)
    {
    if ((png_bytep)near_data == data)
    {

+#if defined(_WIN32_WCE)
+      if ( !WriteFile(io_ptr, near_data, length, &check, NULL) )
+         check = 0;
+#else

       check = fwrite(near_data, 1, length, io_ptr);
       check = fwrite(near_data, 1, length, io_ptr);

+#endif

    }
    else
    {
    }
    else
    {


@@ -93,7 +94,12 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
       {
          written = MIN(NEAR_BUF_SIZE, remaining);
          png_memcpy(buf, data, written); /* copy far buffer to near buffer */
       {
          written = MIN(NEAR_BUF_SIZE, remaining);
          png_memcpy(buf, data, written); /* copy far buffer to near buffer */

+#if defined(_WIN32_WCE)
+         if ( !WriteFile(io_ptr, buf, written, &err, NULL) )
+            err = 0;
+#else

          err = fwrite(buf, 1, written, io_ptr);
          err = fwrite(buf, 1, written, io_ptr);

+#endif

          if (err != written)
             break;
          else
          if (err != written)
             break;
          else


@@ -104,9 +110,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
       while (remaining != 0);
    }
    if (check != length)
       while (remaining != 0);
    }
    if (check != length)

-   {

       png_error(png_ptr, "Write Error");
       png_error(png_ptr, "Write Error");

-   }

 }
 
 #endif
 }
 
 #endif


@@ -116,7 +120,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
    to disk).  After png_flush is called, there should be no data pending
    writing in any buffers. */
 #if defined(PNG_WRITE_FLUSH_SUPPORTED)
    to disk).  After png_flush is called, there should be no data pending
    writing in any buffers. */
 #if defined(PNG_WRITE_FLUSH_SUPPORTED)

-void
+void /* PRIVATE */

 png_flush(png_structp png_ptr)
 {
    if (png_ptr->output_flush_fn != NULL)
 png_flush(png_structp png_ptr)
 {
    if (png_ptr->output_flush_fn != NULL)


@@ -124,18 +128,18 @@ png_flush(png_structp png_ptr)
 }
 
 #if !defined(PNG_NO_STDIO)
 }
 
 #if !defined(PNG_NO_STDIO)

-#ifdef __VISAGECPP__
-static void _Optlink
+void PNGAPI

 png_default_flush(png_structp png_ptr)
 png_default_flush(png_structp png_ptr)

-#else
-static void
-png_default_flush(png_structp png_ptr)
-#endif

 {
 {

-   FILE *io_ptr;
-   io_ptr = (FILE *)CVT_PTR((png_ptr->io_ptr));
+#if !defined(_WIN32_WCE)
+   png_FILE_p io_ptr;
+#endif
+   if(png_ptr == NULL) return;
+#if !defined(_WIN32_WCE)
+   io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));

    if (io_ptr != NULL)
       fflush(io_ptr);
    if (io_ptr != NULL)
       fflush(io_ptr);

+#endif

 }
 #endif
 #endif
 }
 #endif
 #endif


@@ -162,10 +166,11 @@ png_default_flush(png_structp png_ptr)
                    PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
                    time, output_flush_fn will be ignored, although it must be
                    supplied for compatibility. */
                    PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
                    time, output_flush_fn will be ignored, although it must be
                    supplied for compatibility. */

-void
+void PNGAPI

 png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
    png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
 {
 png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
    png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
 {

+   if(png_ptr == NULL) return;

    png_ptr->io_ptr = io_ptr;
 
 #if !defined(PNG_NO_STDIO)
    png_ptr->io_ptr = io_ptr;
 
 #if !defined(PNG_NO_STDIO)


@@ -226,3 +231,4 @@ void *png_far_to_near(png_structp png_ptr,png_voidp ptr, int check)
 }
 #   endif
 #   endif
 }
 #   endif
 #   endif

+#endif /* PNG_WRITE_SUPPORTED */