nengel@2: /*
nengel@2:  * utils for libavcodec
nengel@2:  * Copyright (c) 2001 Fabrice Bellard
nengel@2:  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
nengel@2:  *
nengel@2:  * This file is part of FFmpeg.
nengel@2:  *
nengel@2:  * FFmpeg is free software; you can redistribute it and/or
nengel@2:  * modify it under the terms of the GNU Lesser General Public
nengel@2:  * License as published by the Free Software Foundation; either
nengel@2:  * version 2.1 of the License, or (at your option) any later version.
nengel@2:  *
nengel@2:  * FFmpeg is distributed in the hope that it will be useful,
nengel@2:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
nengel@2:  * Lesser General Public License for more details.
nengel@2:  *
nengel@2:  * You should have received a copy of the GNU Lesser General Public
nengel@2:  * License along with FFmpeg; if not, write to the Free Software
nengel@2:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2:  */
nengel@2: 
nengel@2: /**
nengel@2:  * @file
nengel@2:  * utils.
nengel@2:  */
nengel@2: 
nengel@2: /* needed for mkstemp() */
nengel@2: #define _XOPEN_SOURCE 600
nengel@2: 
nengel@2: #include "avcodec.h"
nengel@2: #include "dsputil.h"
nengel@2: 
nengel@2: #include <stdlib.h>
nengel@2: #include <stdarg.h>
nengel@2: #include <limits.h>
nengel@2: #include <float.h>
nengel@2: //#undef NDEBUG
nengel@2: #include <assert.h>
nengel@2: 
nengel@2: #include <fcntl.h>
nengel@2: 
nengel@2: void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
nengel@2: {
nengel@2:     if(min_size < *size)
nengel@2:         return ptr;
nengel@2: 
nengel@2:     *size= FFMAX(17*min_size/16 + 32, min_size);
nengel@2: 
nengel@2:     ptr= av_realloc(ptr, *size);
nengel@2:     if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now
nengel@2:         *size= 0;
nengel@2: 
nengel@2:     return ptr;
nengel@2: }
nengel@2: 
nengel@2: void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
nengel@2: {
nengel@2:     void **p = ptr;
nengel@2:     if (min_size < *size)
nengel@2:         return;
nengel@2:     *size= FFMAX(17*min_size/16 + 32, min_size);
nengel@2:     av_free(*p);
nengel@2:     *p = av_malloc(*size);
nengel@2:     if (!*p) *size = 0;
nengel@2: }
nengel@2: 
nengel@2: