void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem) { /* see similar ffmpeg.c:grow_array() */ int nb, nb_alloc; intptr_t *tab; nb = *nb_ptr; tab = *(intptr_t**)tab_ptr; if ((nb & (nb - 1)) == 0) { if (nb == 0) nb_alloc = 1; else nb_alloc = nb * 2; tab = av_realloc(tab, nb_alloc * sizeof(intptr_t)); *(intptr_t**)tab_ptr = tab; } tab[nb++] = (intptr_t)elem; *nb_ptr = nb; }