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utils.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "config.h"
20 #include "avutil.h"
21 #include "avassert.h"
22 #include "samplefmt.h"
23 
24 /**
25  * @file
26  * various utility functions
27  */
28 
29 unsigned avutil_version(void)
30 {
31  av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake
36  av_assert0(HAVE_MMX2 == HAVE_MMXEXT);
37 
38  if (av_sat_dadd32(1, 2) != 5) {
39  av_log(NULL, AV_LOG_FATAL, "Libavutil has been build with a broken binutils, please upgrade binutils and rebuild\n");
40  abort();
41  }
42 
43  return LIBAVUTIL_VERSION_INT;
44 }
45 
46 const char *avutil_configuration(void)
47 {
48  return FFMPEG_CONFIGURATION;
49 }
50 
51 const char *avutil_license(void)
52 {
53 #define LICENSE_PREFIX "libavutil license: "
54  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
55 }
56 
57 const char *av_get_media_type_string(enum AVMediaType media_type)
58 {
59  switch (media_type) {
60  case AVMEDIA_TYPE_VIDEO: return "video";
61  case AVMEDIA_TYPE_AUDIO: return "audio";
62  case AVMEDIA_TYPE_DATA: return "data";
63  case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
64  case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
65  default: return NULL;
66  }
67 }
68 
70 {
71  switch (pict_type) {
72  case AV_PICTURE_TYPE_I: return 'I';
73  case AV_PICTURE_TYPE_P: return 'P';
74  case AV_PICTURE_TYPE_B: return 'B';
75  case AV_PICTURE_TYPE_S: return 'S';
76  case AV_PICTURE_TYPE_SI: return 'i';
77  case AV_PICTURE_TYPE_SP: return 'p';
78  case AV_PICTURE_TYPE_BI: return 'b';
79  default: return '?';
80  }
81 }