1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "avutil.h"
#include "avassert.h"
#include "samplefmt.h"
/**
* @file
* various utility functions
*/
unsigned avutil_version(void)
{
av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake
av_assert0(AV_SAMPLE_FMT_DBLP == 9);
av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4);
av_assert0(AV_PICTURE_TYPE_BI == 7);
av_assert0(LIBAVUTIL_VERSION_MICRO >= 100);
av_assert0(HAVE_MMX2 == HAVE_MMXEXT);
if (av_sat_dadd32(1, 2) != 5) {
av_log(NULL, AV_LOG_FATAL, "Libavutil has been build with a broken binutils, please upgrade binutils and rebuild\n");
abort();
}
return LIBAVUTIL_VERSION_INT;
}
const char *avutil_configuration(void)
{
return FFMPEG_CONFIGURATION;
}
const char *avutil_license(void)
{
#define LICENSE_PREFIX "libavutil license: "
return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
}
const char *av_get_media_type_string(enum AVMediaType media_type)
{
switch (media_type) {
case AVMEDIA_TYPE_VIDEO: return "video";
case AVMEDIA_TYPE_AUDIO: return "audio";
case AVMEDIA_TYPE_DATA: return "data";
case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
default: return NULL;
}
}
char av_get_picture_type_char(enum AVPictureType pict_type)
{
switch (pict_type) {
case AV_PICTURE_TYPE_I: return 'I';
case AV_PICTURE_TYPE_P: return 'P';
case AV_PICTURE_TYPE_B: return 'B';
case AV_PICTURE_TYPE_S: return 'S';
case AV_PICTURE_TYPE_SI: return 'i';
case AV_PICTURE_TYPE_SP: return 'p';
case AV_PICTURE_TYPE_BI: return 'b';
default: return '?';
}
}
unsigned av_int_list_length_for_size(unsigned elsize,
const void *list, uint64_t term)
{
unsigned i;
if (!list)
return 0;
#define LIST_LENGTH(type) \
{ type t = term, *l = list; for (i = 0; l[i] != t; i++); }
switch (elsize) {
case 1: LIST_LENGTH(uint8_t); break;
case 2: LIST_LENGTH(uint16_t); break;
case 4: LIST_LENGTH(uint32_t); break;
case 8: LIST_LENGTH(uint64_t); break;
default: av_assert0(!"valid element size");
}
return i;
}
|
