1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/mm/mmplugins/lib3gp/impl/src/memwrap.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,143 @@
     1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#include <3gplibrary/mp4config.h>
    1.20 +#include <stdlib.h>
    1.21 +#include <string.h>
    1.22 +
    1.23 +
    1.24 +/*
    1.25 + * Function:
    1.26 + *
    1.27 + *   void *mp4malloc(size_t size)
    1.28 + *
    1.29 + * Description:
    1.30 + *
    1.31 + *   This is a wrapper for standard C library function calloc.
    1.32 + *
    1.33 + * Parameters:
    1.34 + *
    1.35 + *   size   Size of memory block to be allocated.
    1.36 + *
    1.37 + * Return value:
    1.38 + *
    1.39 + *   See calloc.
    1.40 + *
    1.41 + */
    1.42 +void *mp4malloc(size_t size)
    1.43 +	{
    1.44 +	TInt sizex = size;
    1.45 +  
    1.46 +	if ( sizex <= 0 || sizex >= KMaxTInt/2 )
    1.47 +		{
    1.48 +		return NULL;    // calloc will panic with negative values or size >= KMaxTInt / 2
    1.49 +		}
    1.50 +	else
    1.51 +		{
    1.52 +		return calloc(size, 1);
    1.53 +		}
    1.54 +	}
    1.55 +
    1.56 +
    1.57 +/*
    1.58 + * Function:
    1.59 + *
    1.60 + *   void *mp4realloc(void *memblock,
    1.61 + *                    size_t size,
    1.62 + *                    size_t oldsize)
    1.63 + *
    1.64 + * Description:
    1.65 + *
    1.66 + *   This is a wrapper for standard C library function realloc.
    1.67 + *
    1.68 + * Parameters:
    1.69 + *
    1.70 + *   memblock   Allocated memory pointer
    1.71 + *   size       New size
    1.72 + *   oldsize    Size of memblock
    1.73 + *
    1.74 + * Return value:
    1.75 + *
    1.76 + *   See realloc.
    1.77 + *
    1.78 + */
    1.79 +void *mp4realloc(void *memblock, size_t size, size_t oldsize)
    1.80 +{
    1.81 +  void *p;
    1.82 +
    1.83 +  p = realloc(memblock, size);
    1.84 +  if (p == NULL)
    1.85 +    return p;
    1.86 +
    1.87 +  memset(((mp4_u8 *)p) + oldsize, 0, size - oldsize);
    1.88 +
    1.89 +  return p;
    1.90 +}
    1.91 +
    1.92 +
    1.93 +/*
    1.94 + * Function:
    1.95 + *
    1.96 + *   void mp4free(void *mem)
    1.97 + *
    1.98 + * Description:
    1.99 + *
   1.100 + *   This is a wrapper for standard C library function free.
   1.101 + *
   1.102 + * Parameters:
   1.103 + *
   1.104 + *   mem   Pointer to allocated memory
   1.105 + *
   1.106 + * Return value:
   1.107 + *
   1.108 + *   None
   1.109 + *
   1.110 + */
   1.111 +void mp4free(void *mem)
   1.112 +{
   1.113 +  free(mem);
   1.114 +}
   1.115 +
   1.116 +
   1.117 +/*
   1.118 + * Function:
   1.119 + *
   1.120 + *   void *mp4memcpy(void *dest,
   1.121 + *                   void *src,
   1.122 + *                   mp4_u32 count)
   1.123 + *
   1.124 + * Description:
   1.125 + *
   1.126 + *   This is a wrapper for standard C library function memcpy.
   1.127 + *
   1.128 + * Parameters:
   1.129 + *
   1.130 + *   dest    Destination of copy
   1.131 + *   src     Source of copy
   1.132 + *   count   Number of nytes to copy
   1.133 + *
   1.134 + * Return value:
   1.135 + *
   1.136 + *   See memcpy.
   1.137 + *
   1.138 + */
   1.139 +void *mp4memcpy(void *dest, void *src, mp4_u32 count)
   1.140 +{
   1.141 +  memcpy(dest, src, count);
   1.142 +
   1.143 +  return dest;
   1.144 +}
   1.145 +
   1.146 +// End of File