Remove damned ancient DOS line endings from Irrlicht. Hopefully I did not go overboard.

1 files changed, 667 insertions, 667 deletions

diff --git a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngmem.c b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngmem.c
index 25b5c73..bf5ff03 100644
--- a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngmem.c
+++ b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngmem.c
@@ -1,667 +1,667 @@
-

-/* pngmem.c - stub functions for memory allocation

- *

- * Last changed in libpng 1.5.7 [December 15, 2011]

- * Copyright (c) 1998-2011 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 code is released under the libpng license.

- * For conditions of distribution and use, see the disclaimer

- * and license in png.h

- *

- * This file provides a location for all memory allocation.  Users who

- * need special memory handling are expected to supply replacement

- * functions for png_malloc() and png_free(), and to use

- * png_create_read_struct_2() and png_create_write_struct_2() to

- * identify the replacement functions.

- */

-

-#include "pngpriv.h"

-

-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)

-

-/* Borland DOS special memory handler */

-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)

-/* If you change this, be sure to change the one in png.h also */

-

-/* Allocate memory for a png_struct.  The malloc and memset can be replaced

-   by a single call to calloc() if this is thought to improve performance. */

-PNG_FUNCTION(png_voidp /* PRIVATE */,

-png_create_struct,(int type),PNG_ALLOCATED)

-{

-#  ifdef PNG_USER_MEM_SUPPORTED

-   return (png_create_struct_2(type, NULL, NULL));

-}

-

-/* Alternate version of png_create_struct, for use with user-defined malloc. */

-PNG_FUNCTION(png_voidp /* PRIVATE */,

-png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),

-   PNG_ALLOCATED)

-{

-#  endif /* PNG_USER_MEM_SUPPORTED */

-   png_size_t size;

-   png_voidp struct_ptr;

-

-   if (type == PNG_STRUCT_INFO)

-      size = png_sizeof(png_info);

-

-   else if (type == PNG_STRUCT_PNG)

-      size = png_sizeof(png_struct);

-

-   else

-      return (png_get_copyright(NULL));

-

-#  ifdef PNG_USER_MEM_SUPPORTED

-   if (malloc_fn != NULL)

-   {

-      png_struct dummy_struct;

-      memset(&dummy_struct, 0, sizeof dummy_struct);

-      dummy_struct.mem_ptr=mem_ptr;

-      struct_ptr = (*(malloc_fn))(&dummy_struct, (png_alloc_size_t)size);

-   }

-

-   else

-#  endif /* PNG_USER_MEM_SUPPORTED */

-   struct_ptr = (png_voidp)farmalloc(size);

-   if (struct_ptr != NULL)

-      png_memset(struct_ptr, 0, size);

-

-   return (struct_ptr);

-}

-

-/* Free memory allocated by a png_create_struct() call */

-void /* PRIVATE */

-png_destroy_struct(png_voidp struct_ptr)

-{

-#  ifdef PNG_USER_MEM_SUPPORTED

-   png_destroy_struct_2(struct_ptr, NULL, NULL);

-}

-

-/* Free memory allocated by a png_create_struct() call */

-void /* PRIVATE */

-png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,

-    png_voidp mem_ptr)

-{

-#  endif

-   if (struct_ptr != NULL)

-   {

-#  ifdef PNG_USER_MEM_SUPPORTED

-      if (free_fn != NULL)

-      {

-         png_struct dummy_struct;

-         memset(&dummy_struct, 0, sizeof dummy_struct);

-         dummy_struct.mem_ptr=mem_ptr;

-         (*(free_fn))(&dummy_struct, struct_ptr);

-         return;

-      }

-

-#  endif /* PNG_USER_MEM_SUPPORTED */

-      farfree (struct_ptr);

-   }

-}

-

-/* Allocate memory.  For reasonable files, size should never exceed

- * 64K.  However, zlib may allocate more then 64K if you don't tell

- * it not to.  See zconf.h and png.h for more information. zlib does

- * need to allocate exactly 64K, so whatever you call here must

- * have the ability to do that.

- *

- * Borland seems to have a problem in DOS mode for exactly 64K.

- * It gives you a segment with an offset of 8 (perhaps to store its

- * memory stuff).  zlib doesn't like this at all, so we have to

- * detect and deal with it.  This code should not be needed in

- * Windows or OS/2 modes, and only in 16 bit mode.  This code has

- * been updated by Alexander Lehmann for version 0.89 to waste less

- * memory.

- *

- * Note that we can't use png_size_t for the "size" declaration,

- * since on some systems a png_size_t is a 16-bit quantity, and as a

- * result, we would be truncating potentially larger memory requests

- * (which should cause a fatal error) and introducing major problems.

- */

-PNG_FUNCTION(png_voidp,PNGAPI

-png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ret;

-

-   ret = (png_malloc(png_ptr, size));

-

-   if (ret != NULL)

-      png_memset(ret,0,(png_size_t)size);

-

-   return (ret);

-}

-

-PNG_FUNCTION(png_voidp,PNGAPI

-png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ret;

-

-   if (png_ptr == NULL || size == 0)

-      return (NULL);

-

-#  ifdef PNG_USER_MEM_SUPPORTED

-   if (png_ptr->malloc_fn != NULL)

-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));

-

-   else

-      ret = (png_malloc_default(png_ptr, size));

-

-   if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-       png_error(png_ptr, "Out of memory");

-

-   return (ret);

-}

-

-PNG_FUNCTION(png_voidp,PNGAPI

-png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ret;

-#  endif /* PNG_USER_MEM_SUPPORTED */

-

-   if (png_ptr == NULL || size == 0)

-      return (NULL);

-

-#  ifdef PNG_MAX_MALLOC_64K

-   if (size > (png_uint_32)65536L)

-   {

-      png_warning(png_ptr, "Cannot Allocate > 64K");

-      ret = NULL;

-   }

-

-   else

-#  endif

-

-   if (size != (size_t)size)

-      ret = NULL;

-

-   else if (size == (png_uint_32)65536L)

-   {

-      if (png_ptr->offset_table == NULL)

-      {

-         /* Try to see if we need to do any of this fancy stuff */

-         ret = farmalloc(size);

-         if (ret == NULL || ((png_size_t)ret & 0xffff))

-         {

-            int num_blocks;

-            png_uint_32 total_size;

-            png_bytep table;

-            int i, mem_level, window_bits;

-            png_byte huge * hptr;

-            int window_bits

-

-            if (ret != NULL)

-            {

-               farfree(ret);

-               ret = NULL;

-            }

-

-            window_bits =

-                png_ptr->zlib_window_bits >= png_ptr->zlib_text_window_bits ?

-                png_ptr->zlib_window_bits : png_ptr->zlib_text_window_bits;

-

-            if (window_bits > 14)

-               num_blocks = (int)(1 << (window_bits - 14));

-

-            else

-               num_blocks = 1;

-

-            mem_level =

-                png_ptr->zlib_mem_level >= png_ptr->zlib_text_mem_level ?

-                png_ptr->zlib_mem_level : png_ptr->zlib_text_mem_level;

-

-            if (mem_level >= 7)

-               num_blocks += (int)(1 << (mem_level - 7));

-

-            else

-               num_blocks++;

-

-            total_size = ((png_uint_32)65536L) * (png_uint_32)num_blocks+16;

-

-            table = farmalloc(total_size);

-

-            if (table == NULL)

-            {

-#  ifndef PNG_USER_MEM_SUPPORTED

-               if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-                  png_error(png_ptr, "Out Of Memory"); /* Note "O", "M" */

-

-               else

-                  png_warning(png_ptr, "Out Of Memory");

-#  endif

-               return (NULL);

-            }

-

-            if ((png_size_t)table & 0xfff0)

-            {

-#  ifndef PNG_USER_MEM_SUPPORTED

-               if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-                  png_error(png_ptr,

-                    "Farmalloc didn't return normalized pointer");

-

-               else

-                  png_warning(png_ptr,

-                    "Farmalloc didn't return normalized pointer");

-#  endif

-               return (NULL);

-            }

-

-            png_ptr->offset_table = table;

-            png_ptr->offset_table_ptr = farmalloc(num_blocks *

-               png_sizeof(png_bytep));

-

-            if (png_ptr->offset_table_ptr == NULL)

-            {

-#  ifndef PNG_USER_MEM_SUPPORTED

-               if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-                  png_error(png_ptr, "Out Of memory"); /* Note "O", "m" */

-

-               else

-                  png_warning(png_ptr, "Out Of memory");

-#  endif

-               return (NULL);

-            }

-

-            hptr = (png_byte huge *)table;

-            if ((png_size_t)hptr & 0xf)

-            {

-               hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L);

-               hptr = hptr + 16L;  /* "hptr += 16L" fails on Turbo C++ 3.0 */

-            }

-

-            for (i = 0; i < num_blocks; i++)

-            {

-               png_ptr->offset_table_ptr[i] = (png_bytep)hptr;

-               hptr = hptr + (png_uint_32)65536L;  /* "+=" fails on TC++3.0 */

-            }

-

-            png_ptr->offset_table_number = num_blocks;

-            png_ptr->offset_table_count = 0;

-            png_ptr->offset_table_count_free = 0;

-         }

-      }

-

-      if (png_ptr->offset_table_count >= png_ptr->offset_table_number)

-      {

-#  ifndef PNG_USER_MEM_SUPPORTED

-         if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-            png_error(png_ptr, "Out of Memory"); /* Note "O" and "M" */

-

-         else

-            png_warning(png_ptr, "Out of Memory");

-#  endif

-         return (NULL);

-      }

-

-      ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];

-   }

-

-   else

-      ret = farmalloc(size);

-

-#  ifndef PNG_USER_MEM_SUPPORTED

-   if (ret == NULL)

-   {

-      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-         png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */

-

-      else

-         png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */

-   }

-#  endif

-

-   return (ret);

-}

-

-/* Free a pointer allocated by png_malloc().  In the default

- * configuration, png_ptr is not used, but is passed in case it

- * is needed.  If ptr is NULL, return without taking any action.

- */

-void PNGAPI

-png_free(png_structp png_ptr, png_voidp ptr)

-{

-   if (png_ptr == NULL || ptr == NULL)

-      return;

-

-#  ifdef PNG_USER_MEM_SUPPORTED

-   if (png_ptr->free_fn != NULL)

-   {

-      (*(png_ptr->free_fn))(png_ptr, ptr);

-      return;

-   }

-

-   else

-      png_free_default(png_ptr, ptr);

-}

-

-void PNGAPI

-png_free_default(png_structp png_ptr, png_voidp ptr)

-{

-#  endif /* PNG_USER_MEM_SUPPORTED */

-

-   if (png_ptr == NULL || ptr == NULL)

-      return;

-

-   if (png_ptr->offset_table != NULL)

-   {

-      int i;

-

-      for (i = 0; i < png_ptr->offset_table_count; i++)

-      {

-         if (ptr == png_ptr->offset_table_ptr[i])

-         {

-            ptr = NULL;

-            png_ptr->offset_table_count_free++;

-            break;

-         }

-      }

-      if (png_ptr->offset_table_count_free == png_ptr->offset_table_count)

-      {

-         farfree(png_ptr->offset_table);

-         farfree(png_ptr->offset_table_ptr);

-         png_ptr->offset_table = NULL;

-         png_ptr->offset_table_ptr = NULL;

-      }

-   }

-

-   if (ptr != NULL)

-      farfree(ptr);

-}

-

-#else /* Not the Borland DOS special memory handler */

-

-/* Allocate memory for a png_struct or a png_info.  The malloc and

-   memset can be replaced by a single call to calloc() if this is thought

-   to improve performance noticably. */

-PNG_FUNCTION(png_voidp /* PRIVATE */,

-png_create_struct,(int type),PNG_ALLOCATED)

-{

-#  ifdef PNG_USER_MEM_SUPPORTED

-   return (png_create_struct_2(type, NULL, NULL));

-}

-

-/* Allocate memory for a png_struct or a png_info.  The malloc and

-   memset can be replaced by a single call to calloc() if this is thought

-   to improve performance noticably. */

-PNG_FUNCTION(png_voidp /* PRIVATE */,

-png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),

-   PNG_ALLOCATED)

-{

-#  endif /* PNG_USER_MEM_SUPPORTED */

-   png_size_t size;

-   png_voidp struct_ptr;

-

-   if (type == PNG_STRUCT_INFO)

-      size = png_sizeof(png_info);

-

-   else if (type == PNG_STRUCT_PNG)

-      size = png_sizeof(png_struct);

-

-   else

-      return (NULL);

-

-#  ifdef PNG_USER_MEM_SUPPORTED

-   if (malloc_fn != NULL)

-   {

-      png_struct dummy_struct;

-      png_structp png_ptr = &dummy_struct;

-      png_ptr->mem_ptr=mem_ptr;

-      struct_ptr = (*(malloc_fn))(png_ptr, size);

-

-      if (struct_ptr != NULL)

-         png_memset(struct_ptr, 0, size);

-

-      return (struct_ptr);

-   }

-#  endif /* PNG_USER_MEM_SUPPORTED */

-

-#  if defined(__TURBOC__) && !defined(__FLAT__)

-   struct_ptr = (png_voidp)farmalloc(size);

-#  else

-#    if defined(_MSC_VER) && defined(MAXSEG_64K)

-   struct_ptr = (png_voidp)halloc(size, 1);

-#    else

-   struct_ptr = (png_voidp)malloc(size);

-#    endif

-#  endif

-

-   if (struct_ptr != NULL)

-      png_memset(struct_ptr, 0, size);

-

-   return (struct_ptr);

-}

-

-

-/* Free memory allocated by a png_create_struct() call */

-void /* PRIVATE */

-png_destroy_struct(png_voidp struct_ptr)

-{

-#  ifdef PNG_USER_MEM_SUPPORTED

-   png_destroy_struct_2(struct_ptr, NULL, NULL);

-}

-

-/* Free memory allocated by a png_create_struct() call */

-void /* PRIVATE */

-png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,

-    png_voidp mem_ptr)

-{

-#  endif /* PNG_USER_MEM_SUPPORTED */

-   if (struct_ptr != NULL)

-   {

-#  ifdef PNG_USER_MEM_SUPPORTED

-      if (free_fn != NULL)

-      {

-         png_struct dummy_struct;

-         png_structp png_ptr = &dummy_struct;

-         png_ptr->mem_ptr=mem_ptr;

-         (*(free_fn))(png_ptr, struct_ptr);

-         return;

-      }

-#  endif /* PNG_USER_MEM_SUPPORTED */

-#  if defined(__TURBOC__) && !defined(__FLAT__)

-      farfree(struct_ptr);

-

-#  else

-#    if defined(_MSC_VER) && defined(MAXSEG_64K)

-      hfree(struct_ptr);

-

-#    else

-      free(struct_ptr);

-

-#    endif

-#  endif

-   }

-}

-

-/* Allocate memory.  For reasonable files, size should never exceed

- * 64K.  However, zlib may allocate more then 64K if you don't tell

- * it not to.  See zconf.h and png.h for more information.  zlib does

- * need to allocate exactly 64K, so whatever you call here must

- * have the ability to do that.

- */

-

-PNG_FUNCTION(png_voidp,PNGAPI

-png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ret;

-

-   ret = (png_malloc(png_ptr, size));

-

-   if (ret != NULL)

-      png_memset(ret,0,(png_size_t)size);

-

-   return (ret);

-}

-

-PNG_FUNCTION(png_voidp,PNGAPI

-png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ret;

-

-#  ifdef PNG_USER_MEM_SUPPORTED

-   if (png_ptr == NULL || size == 0)

-      return (NULL);

-

-   if (png_ptr->malloc_fn != NULL)

-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));

-

-   else

-      ret = (png_malloc_default(png_ptr, size));

-

-   if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-       png_error(png_ptr, "Out of Memory");

-

-   return (ret);

-}

-

-PNG_FUNCTION(png_voidp,PNGAPI

-png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ret;

-#  endif /* PNG_USER_MEM_SUPPORTED */

-

-   if (png_ptr == NULL || size == 0)

-      return (NULL);

-

-#  ifdef PNG_MAX_MALLOC_64K

-   if (size > (png_uint_32)65536L)

-   {

-#    ifndef PNG_USER_MEM_SUPPORTED

-      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-         png_error(png_ptr, "Cannot Allocate > 64K");

-

-      else

-#    endif

-         return NULL;

-   }

-#  endif

-

-   /* Check for overflow */

-#  if defined(__TURBOC__) && !defined(__FLAT__)

-

-   if (size != (unsigned long)size)

-      ret = NULL;

-

-   else

-      ret = farmalloc(size);

-

-#  else

-#    if defined(_MSC_VER) && defined(MAXSEG_64K)

-   if (size != (unsigned long)size)

-      ret = NULL;

-

-   else

-      ret = halloc(size, 1);

-

-#    else

-   if (size != (size_t)size)

-      ret = NULL;

-

-   else

-      ret = malloc((size_t)size);

-#    endif

-#  endif

-

-#  ifndef PNG_USER_MEM_SUPPORTED

-   if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)

-      png_error(png_ptr, "Out of Memory");

-#  endif

-

-   return (ret);

-}

-

-/* Free a pointer allocated by png_malloc().  If ptr is NULL, return

- * without taking any action.

- */

-void PNGAPI

-png_free(png_structp png_ptr, png_voidp ptr)

-{

-   if (png_ptr == NULL || ptr == NULL)

-      return;

-

-#  ifdef PNG_USER_MEM_SUPPORTED

-   if (png_ptr->free_fn != NULL)

-   {

-      (*(png_ptr->free_fn))(png_ptr, ptr);

-      return;

-   }

-

-   else

-      png_free_default(png_ptr, ptr);

-}

-

-void PNGAPI

-png_free_default(png_structp png_ptr, png_voidp ptr)

-{

-   if (png_ptr == NULL || ptr == NULL)

-      return;

-

-#  endif /* PNG_USER_MEM_SUPPORTED */

-

-#  if defined(__TURBOC__) && !defined(__FLAT__)

-   farfree(ptr);

-

-#  else

-#    if defined(_MSC_VER) && defined(MAXSEG_64K)

-   hfree(ptr);

-

-#    else

-   free(ptr);

-

-#    endif

-#  endif

-}

-#endif /* Not Borland DOS special memory handler */

-

-/* This function was added at libpng version 1.2.3.  The png_malloc_warn()

- * function will set up png_malloc() to issue a png_warning and return NULL

- * instead of issuing a png_error, if it fails to allocate the requested

- * memory.

- */

-PNG_FUNCTION(png_voidp,PNGAPI

-png_malloc_warn,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)

-{

-   png_voidp ptr;

-   png_uint_32 save_flags;

-   if (png_ptr == NULL)

-      return (NULL);

-

-   save_flags = png_ptr->flags;

-   png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;

-   ptr = (png_voidp)png_malloc((png_structp)png_ptr, size);

-   png_ptr->flags=save_flags;

-   return(ptr);

-}

-

-

-#ifdef PNG_USER_MEM_SUPPORTED

-/* This function is called when the application wants to use another method

- * of allocating and freeing memory.

- */

-void PNGAPI

-png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr

-  malloc_fn, png_free_ptr free_fn)

-{

-   if (png_ptr != NULL)

-   {

-      png_ptr->mem_ptr = mem_ptr;

-      png_ptr->malloc_fn = malloc_fn;

-      png_ptr->free_fn = free_fn;

-   }

-}

-

-/* This function returns a pointer to the mem_ptr associated with the user

- * functions.  The application should free any memory associated with this

- * pointer before png_write_destroy and png_read_destroy are called.

- */

-png_voidp PNGAPI

-png_get_mem_ptr(png_const_structp png_ptr)

-{

-   if (png_ptr == NULL)

-      return (NULL);

-

-   return ((png_voidp)png_ptr->mem_ptr);

-}

-#endif /* PNG_USER_MEM_SUPPORTED */

-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

+
+/* pngmem.c - stub functions for memory allocation
+ *
+ * Last changed in libpng 1.5.7 [December 15, 2011]
+ * Copyright (c) 1998-2011 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 code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all memory allocation.  Users who
+ * need special memory handling are expected to supply replacement
+ * functions for png_malloc() and png_free(), and to use
+ * png_create_read_struct_2() and png_create_write_struct_2() to
+ * identify the replacement functions.
+ */
+
+#include "pngpriv.h"
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
+/* Borland DOS special memory handler */
+#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
+/* If you change this, be sure to change the one in png.h also */
+
+/* Allocate memory for a png_struct.  The malloc and memset can be replaced
+   by a single call to calloc() if this is thought to improve performance. */
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct,(int type),PNG_ALLOCATED)
+{
+#  ifdef PNG_USER_MEM_SUPPORTED
+   return (png_create_struct_2(type, NULL, NULL));
+}
+
+/* Alternate version of png_create_struct, for use with user-defined malloc. */
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
+   PNG_ALLOCATED)
+{
+#  endif /* PNG_USER_MEM_SUPPORTED */
+   png_size_t size;
+   png_voidp struct_ptr;
+
+   if (type == PNG_STRUCT_INFO)
+      size = png_sizeof(png_info);
+
+   else if (type == PNG_STRUCT_PNG)
+      size = png_sizeof(png_struct);
+
+   else
+      return (png_get_copyright(NULL));
+
+#  ifdef PNG_USER_MEM_SUPPORTED
+   if (malloc_fn != NULL)
+   {
+      png_struct dummy_struct;
+      memset(&dummy_struct, 0, sizeof dummy_struct);
+      dummy_struct.mem_ptr=mem_ptr;
+      struct_ptr = (*(malloc_fn))(&dummy_struct, (png_alloc_size_t)size);
+   }
+
+   else
+#  endif /* PNG_USER_MEM_SUPPORTED */
+   struct_ptr = (png_voidp)farmalloc(size);
+   if (struct_ptr != NULL)
+      png_memset(struct_ptr, 0, size);
+
+   return (struct_ptr);
+}
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct(png_voidp struct_ptr)
+{
+#  ifdef PNG_USER_MEM_SUPPORTED
+   png_destroy_struct_2(struct_ptr, NULL, NULL);
+}
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
+    png_voidp mem_ptr)
+{
+#  endif
+   if (struct_ptr != NULL)
+   {
+#  ifdef PNG_USER_MEM_SUPPORTED
+      if (free_fn != NULL)
+      {
+         png_struct dummy_struct;
+         memset(&dummy_struct, 0, sizeof dummy_struct);
+         dummy_struct.mem_ptr=mem_ptr;
+         (*(free_fn))(&dummy_struct, struct_ptr);
+         return;
+      }
+
+#  endif /* PNG_USER_MEM_SUPPORTED */
+      farfree (struct_ptr);
+   }
+}
+
+/* Allocate memory.  For reasonable files, size should never exceed
+ * 64K.  However, zlib may allocate more then 64K if you don't tell
+ * it not to.  See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ *
+ * Borland seems to have a problem in DOS mode for exactly 64K.
+ * It gives you a segment with an offset of 8 (perhaps to store its
+ * memory stuff).  zlib doesn't like this at all, so we have to
+ * detect and deal with it.  This code should not be needed in
+ * Windows or OS/2 modes, and only in 16 bit mode.  This code has
+ * been updated by Alexander Lehmann for version 0.89 to waste less
+ * memory.
+ *
+ * Note that we can't use png_size_t for the "size" declaration,
+ * since on some systems a png_size_t is a 16-bit quantity, and as a
+ * result, we would be truncating potentially larger memory requests
+ * (which should cause a fatal error) and introducing major problems.
+ */
+PNG_FUNCTION(png_voidp,PNGAPI
+png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ret;
+
+   ret = (png_malloc(png_ptr, size));
+
+   if (ret != NULL)
+      png_memset(ret,0,(png_size_t)size);
+
+   return (ret);
+}
+
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ret;
+
+   if (png_ptr == NULL || size == 0)
+      return (NULL);
+
+#  ifdef PNG_USER_MEM_SUPPORTED
+   if (png_ptr->malloc_fn != NULL)
+      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
+
+   else
+      ret = (png_malloc_default(png_ptr, size));
+
+   if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+       png_error(png_ptr, "Out of memory");
+
+   return (ret);
+}
+
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ret;
+#  endif /* PNG_USER_MEM_SUPPORTED */
+
+   if (png_ptr == NULL || size == 0)
+      return (NULL);
+
+#  ifdef PNG_MAX_MALLOC_64K
+   if (size > (png_uint_32)65536L)
+   {
+      png_warning(png_ptr, "Cannot Allocate > 64K");
+      ret = NULL;
+   }
+
+   else
+#  endif
+
+   if (size != (size_t)size)
+      ret = NULL;
+
+   else if (size == (png_uint_32)65536L)
+   {
+      if (png_ptr->offset_table == NULL)
+      {
+         /* Try to see if we need to do any of this fancy stuff */
+         ret = farmalloc(size);
+         if (ret == NULL || ((png_size_t)ret & 0xffff))
+         {
+            int num_blocks;
+            png_uint_32 total_size;
+            png_bytep table;
+            int i, mem_level, window_bits;
+            png_byte huge * hptr;
+            int window_bits
+
+            if (ret != NULL)
+            {
+               farfree(ret);
+               ret = NULL;
+            }
+
+            window_bits =
+                png_ptr->zlib_window_bits >= png_ptr->zlib_text_window_bits ?
+                png_ptr->zlib_window_bits : png_ptr->zlib_text_window_bits;
+
+            if (window_bits > 14)
+               num_blocks = (int)(1 << (window_bits - 14));
+
+            else
+               num_blocks = 1;
+
+            mem_level =
+                png_ptr->zlib_mem_level >= png_ptr->zlib_text_mem_level ?
+                png_ptr->zlib_mem_level : png_ptr->zlib_text_mem_level;
+
+            if (mem_level >= 7)
+               num_blocks += (int)(1 << (mem_level - 7));
+
+            else
+               num_blocks++;
+
+            total_size = ((png_uint_32)65536L) * (png_uint_32)num_blocks+16;
+
+            table = farmalloc(total_size);
+
+            if (table == NULL)
+            {
+#  ifndef PNG_USER_MEM_SUPPORTED
+               if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+                  png_error(png_ptr, "Out Of Memory"); /* Note "O", "M" */
+
+               else
+                  png_warning(png_ptr, "Out Of Memory");
+#  endif
+               return (NULL);
+            }
+
+            if ((png_size_t)table & 0xfff0)
+            {
+#  ifndef PNG_USER_MEM_SUPPORTED
+               if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+                  png_error(png_ptr,
+                    "Farmalloc didn't return normalized pointer");
+
+               else
+                  png_warning(png_ptr,
+                    "Farmalloc didn't return normalized pointer");
+#  endif
+               return (NULL);
+            }
+
+            png_ptr->offset_table = table;
+            png_ptr->offset_table_ptr = farmalloc(num_blocks *
+               png_sizeof(png_bytep));
+
+            if (png_ptr->offset_table_ptr == NULL)
+            {
+#  ifndef PNG_USER_MEM_SUPPORTED
+               if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+                  png_error(png_ptr, "Out Of memory"); /* Note "O", "m" */
+
+               else
+                  png_warning(png_ptr, "Out Of memory");
+#  endif
+               return (NULL);
+            }
+
+            hptr = (png_byte huge *)table;
+            if ((png_size_t)hptr & 0xf)
+            {
+               hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L);
+               hptr = hptr + 16L;  /* "hptr += 16L" fails on Turbo C++ 3.0 */
+            }
+
+            for (i = 0; i < num_blocks; i++)
+            {
+               png_ptr->offset_table_ptr[i] = (png_bytep)hptr;
+               hptr = hptr + (png_uint_32)65536L;  /* "+=" fails on TC++3.0 */
+            }
+
+            png_ptr->offset_table_number = num_blocks;
+            png_ptr->offset_table_count = 0;
+            png_ptr->offset_table_count_free = 0;
+         }
+      }
+
+      if (png_ptr->offset_table_count >= png_ptr->offset_table_number)
+      {
+#  ifndef PNG_USER_MEM_SUPPORTED
+         if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+            png_error(png_ptr, "Out of Memory"); /* Note "O" and "M" */
+
+         else
+            png_warning(png_ptr, "Out of Memory");
+#  endif
+         return (NULL);
+      }
+
+      ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];
+   }
+
+   else
+      ret = farmalloc(size);
+
+#  ifndef PNG_USER_MEM_SUPPORTED
+   if (ret == NULL)
+   {
+      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+         png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */
+
+      else
+         png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */
+   }
+#  endif
+
+   return (ret);
+}
+
+/* Free a pointer allocated by png_malloc().  In the default
+ * configuration, png_ptr is not used, but is passed in case it
+ * is needed.  If ptr is NULL, return without taking any action.
+ */
+void PNGAPI
+png_free(png_structp png_ptr, png_voidp ptr)
+{
+   if (png_ptr == NULL || ptr == NULL)
+      return;
+
+#  ifdef PNG_USER_MEM_SUPPORTED
+   if (png_ptr->free_fn != NULL)
+   {
+      (*(png_ptr->free_fn))(png_ptr, ptr);
+      return;
+   }
+
+   else
+      png_free_default(png_ptr, ptr);
+}
+
+void PNGAPI
+png_free_default(png_structp png_ptr, png_voidp ptr)
+{
+#  endif /* PNG_USER_MEM_SUPPORTED */
+
+   if (png_ptr == NULL || ptr == NULL)
+      return;
+
+   if (png_ptr->offset_table != NULL)
+   {
+      int i;
+
+      for (i = 0; i < png_ptr->offset_table_count; i++)
+      {
+         if (ptr == png_ptr->offset_table_ptr[i])
+         {
+            ptr = NULL;
+            png_ptr->offset_table_count_free++;
+            break;
+         }
+      }
+      if (png_ptr->offset_table_count_free == png_ptr->offset_table_count)
+      {
+         farfree(png_ptr->offset_table);
+         farfree(png_ptr->offset_table_ptr);
+         png_ptr->offset_table = NULL;
+         png_ptr->offset_table_ptr = NULL;
+      }
+   }
+
+   if (ptr != NULL)
+      farfree(ptr);
+}
+
+#else /* Not the Borland DOS special memory handler */
+
+/* Allocate memory for a png_struct or a png_info.  The malloc and
+   memset can be replaced by a single call to calloc() if this is thought
+   to improve performance noticably. */
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct,(int type),PNG_ALLOCATED)
+{
+#  ifdef PNG_USER_MEM_SUPPORTED
+   return (png_create_struct_2(type, NULL, NULL));
+}
+
+/* Allocate memory for a png_struct or a png_info.  The malloc and
+   memset can be replaced by a single call to calloc() if this is thought
+   to improve performance noticably. */
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
+   PNG_ALLOCATED)
+{
+#  endif /* PNG_USER_MEM_SUPPORTED */
+   png_size_t size;
+   png_voidp struct_ptr;
+
+   if (type == PNG_STRUCT_INFO)
+      size = png_sizeof(png_info);
+
+   else if (type == PNG_STRUCT_PNG)
+      size = png_sizeof(png_struct);
+
+   else
+      return (NULL);
+
+#  ifdef PNG_USER_MEM_SUPPORTED
+   if (malloc_fn != NULL)
+   {
+      png_struct dummy_struct;
+      png_structp png_ptr = &dummy_struct;
+      png_ptr->mem_ptr=mem_ptr;
+      struct_ptr = (*(malloc_fn))(png_ptr, size);
+
+      if (struct_ptr != NULL)
+         png_memset(struct_ptr, 0, size);
+
+      return (struct_ptr);
+   }
+#  endif /* PNG_USER_MEM_SUPPORTED */
+
+#  if defined(__TURBOC__) && !defined(__FLAT__)
+   struct_ptr = (png_voidp)farmalloc(size);
+#  else
+#    if defined(_MSC_VER) && defined(MAXSEG_64K)
+   struct_ptr = (png_voidp)halloc(size, 1);
+#    else
+   struct_ptr = (png_voidp)malloc(size);
+#    endif
+#  endif
+
+   if (struct_ptr != NULL)
+      png_memset(struct_ptr, 0, size);
+
+   return (struct_ptr);
+}
+
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct(png_voidp struct_ptr)
+{
+#  ifdef PNG_USER_MEM_SUPPORTED
+   png_destroy_struct_2(struct_ptr, NULL, NULL);
+}
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
+    png_voidp mem_ptr)
+{
+#  endif /* PNG_USER_MEM_SUPPORTED */
+   if (struct_ptr != NULL)
+   {
+#  ifdef PNG_USER_MEM_SUPPORTED
+      if (free_fn != NULL)
+      {
+         png_struct dummy_struct;
+         png_structp png_ptr = &dummy_struct;
+         png_ptr->mem_ptr=mem_ptr;
+         (*(free_fn))(png_ptr, struct_ptr);
+         return;
+      }
+#  endif /* PNG_USER_MEM_SUPPORTED */
+#  if defined(__TURBOC__) && !defined(__FLAT__)
+      farfree(struct_ptr);
+
+#  else
+#    if defined(_MSC_VER) && defined(MAXSEG_64K)
+      hfree(struct_ptr);
+
+#    else
+      free(struct_ptr);
+
+#    endif
+#  endif
+   }
+}
+
+/* Allocate memory.  For reasonable files, size should never exceed
+ * 64K.  However, zlib may allocate more then 64K if you don't tell
+ * it not to.  See zconf.h and png.h for more information.  zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ */
+
+PNG_FUNCTION(png_voidp,PNGAPI
+png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ret;
+
+   ret = (png_malloc(png_ptr, size));
+
+   if (ret != NULL)
+      png_memset(ret,0,(png_size_t)size);
+
+   return (ret);
+}
+
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ret;
+
+#  ifdef PNG_USER_MEM_SUPPORTED
+   if (png_ptr == NULL || size == 0)
+      return (NULL);
+
+   if (png_ptr->malloc_fn != NULL)
+      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+
+   else
+      ret = (png_malloc_default(png_ptr, size));
+
+   if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+       png_error(png_ptr, "Out of Memory");
+
+   return (ret);
+}
+
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ret;
+#  endif /* PNG_USER_MEM_SUPPORTED */
+
+   if (png_ptr == NULL || size == 0)
+      return (NULL);
+
+#  ifdef PNG_MAX_MALLOC_64K
+   if (size > (png_uint_32)65536L)
+   {
+#    ifndef PNG_USER_MEM_SUPPORTED
+      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+         png_error(png_ptr, "Cannot Allocate > 64K");
+
+      else
+#    endif
+         return NULL;
+   }
+#  endif
+
+   /* Check for overflow */
+#  if defined(__TURBOC__) && !defined(__FLAT__)
+
+   if (size != (unsigned long)size)
+      ret = NULL;
+
+   else
+      ret = farmalloc(size);
+
+#  else
+#    if defined(_MSC_VER) && defined(MAXSEG_64K)
+   if (size != (unsigned long)size)
+      ret = NULL;
+
+   else
+      ret = halloc(size, 1);
+
+#    else
+   if (size != (size_t)size)
+      ret = NULL;
+
+   else
+      ret = malloc((size_t)size);
+#    endif
+#  endif
+
+#  ifndef PNG_USER_MEM_SUPPORTED
+   if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+      png_error(png_ptr, "Out of Memory");
+#  endif
+
+   return (ret);
+}
+
+/* Free a pointer allocated by png_malloc().  If ptr is NULL, return
+ * without taking any action.
+ */
+void PNGAPI
+png_free(png_structp png_ptr, png_voidp ptr)
+{
+   if (png_ptr == NULL || ptr == NULL)
+      return;
+
+#  ifdef PNG_USER_MEM_SUPPORTED
+   if (png_ptr->free_fn != NULL)
+   {
+      (*(png_ptr->free_fn))(png_ptr, ptr);
+      return;
+   }
+
+   else
+      png_free_default(png_ptr, ptr);
+}
+
+void PNGAPI
+png_free_default(png_structp png_ptr, png_voidp ptr)
+{
+   if (png_ptr == NULL || ptr == NULL)
+      return;
+
+#  endif /* PNG_USER_MEM_SUPPORTED */
+
+#  if defined(__TURBOC__) && !defined(__FLAT__)
+   farfree(ptr);
+
+#  else
+#    if defined(_MSC_VER) && defined(MAXSEG_64K)
+   hfree(ptr);
+
+#    else
+   free(ptr);
+
+#    endif
+#  endif
+}
+#endif /* Not Borland DOS special memory handler */
+
+/* This function was added at libpng version 1.2.3.  The png_malloc_warn()
+ * function will set up png_malloc() to issue a png_warning and return NULL
+ * instead of issuing a png_error, if it fails to allocate the requested
+ * memory.
+ */
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_warn,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+   png_voidp ptr;
+   png_uint_32 save_flags;
+   if (png_ptr == NULL)
+      return (NULL);
+
+   save_flags = png_ptr->flags;
+   png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
+   ptr = (png_voidp)png_malloc((png_structp)png_ptr, size);
+   png_ptr->flags=save_flags;
+   return(ptr);
+}
+
+
+#ifdef PNG_USER_MEM_SUPPORTED
+/* This function is called when the application wants to use another method
+ * of allocating and freeing memory.
+ */
+void PNGAPI
+png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
+  malloc_fn, png_free_ptr free_fn)
+{
+   if (png_ptr != NULL)
+   {
+      png_ptr->mem_ptr = mem_ptr;
+      png_ptr->malloc_fn = malloc_fn;
+      png_ptr->free_fn = free_fn;
+   }
+}
+
+/* This function returns a pointer to the mem_ptr associated with the user
+ * functions.  The application should free any memory associated with this
+ * pointer before png_write_destroy and png_read_destroy are called.
+ */
+png_voidp PNGAPI
+png_get_mem_ptr(png_const_structp png_ptr)
+{
+   if (png_ptr == NULL)
+      return (NULL);
+
+   return ((png_voidp)png_ptr->mem_ptr);
+}
+#endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */