FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavutil/utils.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 28 50 56.0%
Functions: 3 6 50.0%
Branches: 31 55 56.4%

Line Branch Exec Source
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
23 /**
24 * @file
25 * various utility functions
26 */
27
28 924981 const char *av_get_media_type_string(enum AVMediaType media_type)
29 {
30
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924981 switch (media_type) {
31 364699 case AVMEDIA_TYPE_VIDEO: return "video";
32 556767 case AVMEDIA_TYPE_AUDIO: return "audio";
33 201 case AVMEDIA_TYPE_DATA: return "data";
34 3297 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
35 17 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
36 default: return NULL;
37 }
38 }
39
40 2014 char av_get_picture_type_char(enum AVPictureType pict_type)
41 {
42
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2014 switch (pict_type) {
43 256 case AV_PICTURE_TYPE_I: return 'I';
44 1389 case AV_PICTURE_TYPE_P: return 'P';
45 108 case AV_PICTURE_TYPE_B: return 'B';
46 case AV_PICTURE_TYPE_S: return 'S';
47 case AV_PICTURE_TYPE_SI: return 'i';
48 case AV_PICTURE_TYPE_SP: return 'p';
49 case AV_PICTURE_TYPE_BI: return 'b';
50 261 default: return '?';
51 }
52 }
53
54 #if FF_API_OPT_INT_LIST
55 unsigned av_int_list_length_for_size(unsigned elsize,
56 const void *list, uint64_t term)
57 {
58 unsigned i;
59
60 if (!list)
61 return 0;
62 #define LIST_LENGTH(type) \
63 { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); }
64 switch (elsize) {
65 case 1: LIST_LENGTH(uint8_t); break;
66 case 2: LIST_LENGTH(uint16_t); break;
67 case 4: LIST_LENGTH(uint32_t); break;
68 case 8: LIST_LENGTH(uint64_t); break;
69 default: av_assert0(!"valid element size");
70 }
71 return i;
72 }
73 #endif
74
75 56817 char *av_fourcc_make_string(char *buf, uint32_t fourcc)
76 {
77 int i;
78 56817 char *orig_buf = buf;
79 56817 size_t buf_size = AV_FOURCC_MAX_STRING_SIZE;
80
81
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284085 for (i = 0; i < 4; i++) {
82 227268 const int c = fourcc & 0xff;
83
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227268 const int print_chr = (c >= '0' && c <= '9') ||
84
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215170 (c >= 'a' && c <= 'z') ||
85
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460639 (c >= 'A' && c <= 'Z') ||
86
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6103 (c && strchr(". -_", c));
87
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227268 const int len = snprintf(buf, buf_size, print_chr ? "%c" : "[%d]", c);
88
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227268 if (len < 0)
89 break;
90 227268 buf += len;
91
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227268 buf_size = buf_size > len ? buf_size - len : 0;
92 227268 fourcc >>= 8;
93 }
94
95 56817 return orig_buf;
96 }
97
98 AVRational av_get_time_base_q(void)
99 {
100 return (AVRational){1, AV_TIME_BASE};
101 }
102
103 void av_assert0_fpu(void) {
104 #if HAVE_MMX_INLINE
105 uint16_t state[14];
106 __asm__ volatile (
107 "fstenv %0 \n\t"
108 : "+m" (state)
109 :
110 : "memory"
111 );
112 av_assert0((state[4] & 3) == 3);
113 #endif
114 }
115