os_support.c 1.85 KB
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/*
 * Various utilities for ffmpeg system
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
 *
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 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
 * 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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 * FFmpeg is distributed in the hope that it will be useful,
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 * 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
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 * License along with FFmpeg; 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 "config.h"
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#include "avformat.h"
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#if defined(CONFIG_WINCE)
/* Skip includes on WinCE. */
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#elif defined(__MINGW32__)
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#include <sys/types.h>
#include <sys/timeb.h>
#elif defined(CONFIG_OS2)
#include <string.h>
#include <sys/time.h>
#else
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#endif
#include <time.h>

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/**
 * gets the current time in micro seconds.
 */
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int64_t av_gettime(void)
{
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#if defined(CONFIG_WINCE)
    return timeGetTime() * int64_t_C(1000);
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#elif defined(__MINGW32__)
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    struct timeb tb;
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    _ftime(&tb);
    return ((int64_t)tb.time * int64_t_C(1000) + (int64_t)tb.millitm) * int64_t_C(1000);
#else
    struct timeval tv;
    gettimeofday(&tv,NULL);
    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
#endif
}

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#if !defined(CONFIG_WINCE) && !defined(HAVE_LOCALTIME_R)
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struct tm *localtime_r(const time_t *t, struct tm *tp)
{
    struct tm *l;
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    l = localtime(t);
    if (!l)
        return 0;
    *tp = *l;
    return tp;
}
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#endif /* !defined(CONFIG_WINCE) && !defined(HAVE_LOCALTIME_R) */