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  1. /*
  2.  * Copyright (c) 2002 Fabrice Bellard
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #ifndef AVUTIL_MEM_INTERNAL_H
  22. #define AVUTIL_MEM_INTERNAL_H
  23.  
  24. #include "avassert.h"
  25. #include "mem.h"
  26.  
  27. static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
  28. {
  29.     void *val;
  30.  
  31.     memcpy(&val, ptr, sizeof(val));
  32.     if (min_size <= *size) {
  33.         av_assert0(val || !min_size);
  34.         return 0;
  35.     }
  36.     min_size = FFMAX(min_size + min_size / 16 + 32, min_size);
  37.     av_freep(ptr);
  38.     val = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
  39.     memcpy(ptr, &val, sizeof(val));
  40.     if (!val)
  41.         min_size = 0;
  42.     *size = min_size;
  43.     return 1;
  44. }
  45. #endif /* AVUTIL_MEM_INTERNAL_H */
  46.