libavutil/version.c

   1 /*
   2  * Version functions.
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <stdlib.h>
  22
  23 #include "config.h"
  24 #include "avassert.h"
  25 #include "avutil.h"
  26 #include "common.h"
  27 #include "libm.h"
  28 #include "log.h"
  29 #include "samplefmt.h"
  30 #include "version.h"
  31
  32 #include "libavutil/ffversion.h"
  33 const char av_util_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
  34
  35 const char *av_version_info(void)
  36 {
  37     return FFMPEG_VERSION;
  38 }
  39
  40 unsigned avutil_version(void)
  41 {
  42     av_assert0(AV_SAMPLE_FMT_DBLP == 9);
  43     av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4);
  44     av_assert0(AV_PICTURE_TYPE_BI == 7);
  45     av_assert0(LIBAVUTIL_VERSION_MICRO >= 100);
  46     av_assert0(HAVE_MMX2 == HAVE_MMXEXT);
  47
  48     av_assert0(((size_t)-1) > 0); // C guarantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844
  49
  50     if (av_sat_dadd32(1, 2) != 5) {
  51         av_log(NULL, AV_LOG_FATAL, "Libavutil has been built with a broken binutils, please upgrade binutils and rebuild\n");
  52         abort();
  53     }
  54
  55     if (llrint(1LL<<60) != 1LL<<60) {
  56         av_log(NULL, AV_LOG_ERROR, "Libavutil has been linked to a broken llrint()\n");
  57     }
  58
  59     return LIBAVUTIL_VERSION_INT;
  60 }
  61
  62 const char *avutil_configuration(void)
  63 {
  64     return FFMPEG_CONFIGURATION;
  65 }
  66
  67 const char *avutil_license(void)
  68 {
  69 #define LICENSE_PREFIX "libavutil license: "
  70     return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
  71 }