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This function implements a delay using the first available of the following functions: - nanosleep() - usleep() - Sleep() (Windows) The conditional #includes in time.c are simplified by including unistd.h and windows.h whenever they are available rather than having these lines triggered by specific functions. Signed-off-by: Mans Rullgard <mans@mansr.com>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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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 "config.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <time.h>
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#if HAVE_GETTIMEOFDAY
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#include <sys/time.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_WINDOWS_H
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#include <windows.h>
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#endif
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#include "libavutil/time.h"
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#include "error.h"
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int64_t av_gettime(void)
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{
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#if HAVE_GETTIMEOFDAY
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
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#elif HAVE_GETSYSTEMTIMEASFILETIME
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FILETIME ft;
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int64_t t;
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GetSystemTimeAsFileTime(&ft);
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t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
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return t / 10 - 11644473600000000; /* Jan 1, 1601 */
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#else
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return -1;
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#endif
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}
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int av_usleep(unsigned usec)
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{
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#if HAVE_NANOSLEEP
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struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 };
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while (nanosleep(&ts, &ts) < 0 && errno == EINTR);
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return 0;
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#elif HAVE_USLEEP
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return usleep(usec);
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#elif HAVE_SLEEP
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Sleep(usec / 1000);
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return 0;
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#else
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return AVERROR(ENOSYS);
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#endif
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}
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