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60 lines
1.9 KiB
60 lines
1.9 KiB
/* |
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* various simple utilities for libavformat |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/time_internal.h" |
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#include "avformat.h" |
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#include "internal.h" |
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/* add one element to a dynamic array */ |
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void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem) |
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{ |
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/* see similar avconv.c:grow_array() */ |
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int nb, nb_alloc; |
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intptr_t *tab; |
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nb = *nb_ptr; |
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tab = *tab_ptr; |
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if ((nb & (nb - 1)) == 0) { |
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if (nb == 0) |
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nb_alloc = 1; |
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else |
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nb_alloc = nb * 2; |
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tab = av_realloc(tab, nb_alloc * sizeof(intptr_t)); |
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*tab_ptr = tab; |
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} |
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tab[nb++] = elem; |
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*nb_ptr = nb; |
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} |
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#define ISLEAP(y) (((y) % 4 == 0) && (((y) % 100) != 0 || ((y) % 400) == 0)) |
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#define LEAPS_COUNT(y) ((y)/4 - (y)/100 + (y)/400) |
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/* This is our own gmtime_r. It differs from its POSIX counterpart in a |
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couple of places, though. */ |
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struct tm *ff_brktimegm(time_t secs, struct tm *tm) |
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{ |
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tm = gmtime_r(&secs, tm); |
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tm->tm_year += 1900; /* unlike gmtime_r we store complete year here */ |
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tm->tm_mon += 1; /* unlike gmtime_r tm_mon is from 1 to 12 */ |
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return tm; |
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}
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