/*
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
  * as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVUTIL_DYNARRAY_H
 #define AVUTIL_DYNARRAY_H
 
 #include "log.h"
 #include "mem.h"
 
 /**
  * Add an element of to a dynamic array.
  *
  * The array is reallocated when its number of elements reaches powers of 2.
  * Therefore, the amortized cost of adding an element is constant.
  *
  * In case of success, the pointer to the array is updated in order to
  * point to the new grown array, and the size is incremented.
  *
  * @param av_size_max  maximum size of the array, usually the MAX macro of
  *                     the type of the size
  * @param av_elt_size  size of the elements in the array, in bytes
  * @param av_array     pointer to the array, must be a lvalue

  * @param av_size      size of the array, must be an integer lvalue

  * @param av_success   statement to execute on success; at this point, the
  *                     size variable is not yet incremented
  * @param av_failure   statement to execute on failure; if this happens, the
  *                     array and size are not changed; the statement can end
  *                     with a return or a goto
  */

 #define FF_DYNARRAY_ADD(av_size_max, av_elt_size, av_array, av_size, \

                         av_success, av_failure) \
     do { \
         size_t av_size_new = (av_size); \
         if (!((av_size) & ((av_size) - 1))) { \
             av_size_new = (av_size) ? (av_size) << 1 : 1; \
             if (av_size_new > (av_size_max) / (av_elt_size)) { \
                 av_size_new = 0; \
             } else { \
                 void *av_array_new = \
                     av_realloc((av_array), av_size_new * (av_elt_size)); \
                 if (!av_array_new) \
                     av_size_new = 0; \
                 else \
                     (av_array) = av_array_new; \
             } \
         } \
         if (av_size_new) { \
             { av_success } \
             (av_size)++; \
         } else { \
             av_failure \
         } \
     } while (0)
 
 #endif /* AVUTIL_DYNARRAY_H */