Move ksquirrel-libs-png to kernel folder since it is shared by three different codecs (dicom, png, svg)

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

1 files changed, 0 insertions, 608 deletions

diff --git a/kernel/kls_png/ksquirrel-libs-png/pngmem.c b/kernel/kls_png/ksquirrel-libs-png/pngmem.c
deleted file mode 100644
index 248060f..0000000
--- a/kernel/kls_png/ksquirrel-libs-png/pngmem.c
+++ /dev/null
@@ -1,608 +0,0 @@
-
-/* pngmem.c - stub functions for memory allocation
- *
- * Last changed in libpng 1.2.13 November 13, 2006
- * For conditions of distribution and use, see copyright notice in png.h
- * 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 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.
- */
-
-#define PNG_INTERNAL
-#include "png.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_voidp /* PRIVATE */
-png_create_struct(int type)
-{
-#ifdef PNG_USER_MEM_SUPPORTED
-   return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
-}
-
-/* Alternate version of png_create_struct, for use with user-defined malloc. */
-png_voidp /* PRIVATE */
-png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
-{
-#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;
-      png_structp png_ptr = &dummy_struct;
-      png_ptr->mem_ptr=mem_ptr;
-      struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)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, png_free_ptr_NULL, png_voidp_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;
-         png_structp png_ptr = &dummy_struct;
-         png_ptr->mem_ptr=mem_ptr;
-         (*(free_fn))(png_ptr, 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_voidp PNGAPI
-png_malloc(png_structp png_ptr, png_uint_32 size)
-{
-   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, (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_voidp PNGAPI
-png_malloc_default(png_structp png_ptr, png_uint_32 size)
-{
-   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;
-            png_byte huge * hptr;
-
-            if (ret != NULL)
-            {
-               farfree(ret);
-               ret = NULL;
-            }
-
-            if(png_ptr->zlib_window_bits > 14)
-               num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14));
-            else
-               num_blocks = 1;
-            if (png_ptr->zlib_mem_level >= 7)
-               num_blocks += (int)(1 << (png_ptr->zlib_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" and "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" and "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) 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_voidp /* PRIVATE */
-png_create_struct(int type)
-{
-#ifdef PNG_USER_MEM_SUPPORTED
-   return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_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_voidp /* PRIVATE */
-png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
-{
-#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, png_free_ptr_NULL, png_voidp_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_voidp PNGAPI
-png_malloc(png_structp png_ptr, png_uint_32 size)
-{
-   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_voidp PNGAPI
-png_malloc_default(png_structp png_ptr, png_uint_32 size)
-{
-   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 */
-
-#if defined(PNG_1_0_X)
-#  define png_malloc_warn png_malloc
-#else
-/* 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_voidp PNGAPI
-png_malloc_warn(png_structp png_ptr, png_uint_32 size)
-{
-   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);
-}
-#endif
-
-png_voidp PNGAPI
-png_memcpy_check (png_structp png_ptr, png_voidp s1, png_voidp s2,
-   png_uint_32 length)
-{
-   png_size_t size;
-
-   size = (png_size_t)length;
-   if ((png_uint_32)size != length)
-      png_error(png_ptr,"Overflow in png_memcpy_check.");
-
-   return(png_memcpy (s1, s2, size));
-}
-
-png_voidp PNGAPI
-png_memset_check (png_structp png_ptr, png_voidp s1, int value,
-   png_uint_32 length)
-{
-   png_size_t size;
-
-   size = (png_size_t)length;
-   if ((png_uint_32)size != length)
-      png_error(png_ptr,"Overflow in png_memset_check.");
-
-   return (png_memset (s1, value, size));
-
-}
-
-#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_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 */