FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/tests/golomb.c
Date: 2025-10-27 03:13:05
Exec Total Coverage
Lines: 42 53 79.2%
Functions: 1 1 100.0%
Branches: 21 26 80.8%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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 <stdint.h>
22 #include <stdio.h>
23
24 #include "libavutil/internal.h"
25 #include "libavutil/mem.h"
26
27 #include "libavcodec/get_bits.h"
28 #include "libavcodec/golomb.h"
29 #include "libavcodec/put_bits.h"
30 #include "libavcodec/put_golomb.h"
31
32 #define COUNT 8191
33 #define SIZE (COUNT * 4)
34
35 1 int main(void)
36 {
37 1 int i, ret = 0;
38 uint8_t *temp;
39 PutBitContext pb;
40 GetBitContext gb;
41
42 1 temp = av_malloc(SIZE);
43
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 1 if (!temp)
44 ✗ return 2;
45
46 1 init_put_bits(&pb, temp, SIZE);
47
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 8192 for (i = 0; i < COUNT; i++)
48 8191 set_ue_golomb(&pb, i);
49 1 flush_put_bits(&pb);
50
51 1 init_get_bits(&gb, temp, 8 * SIZE);
52
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 8192 for (i = 0; i < COUNT; i++) {
53 8191 int j, s = show_bits(&gb, 25);
54
55 8191 j = get_ue_golomb(&gb);
56
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 8191 if (j != i) {
57 ✗ fprintf(stderr, "get_ue_golomb: expected %d, got %d. bits: %7x\n",
58 i, j, s);
59 ✗ ret = 1;
60 }
61 }
62
63 #define EXTEND(i) ((i) << 3 | (i) & 7)
64 1 init_put_bits(&pb, temp, SIZE);
65
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 8192 for (i = 0; i < COUNT; i++)
66 8191 set_ue_golomb(&pb, EXTEND(i));
67 1 flush_put_bits(&pb);
68
69 1 init_get_bits(&gb, temp, 8 * SIZE);
70
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 8192 for (i = 0; i < COUNT; i++) {
71 8191 int j, s = show_bits_long(&gb, 32);
72
73 8191 j = get_ue_golomb_long(&gb);
74
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 8191 if (j != EXTEND(i)) {
75 ✗ fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
76 ✗ "bits: %8x\n", EXTEND(i), j, s);
77 ✗ ret = 1;
78 }
79 }
80
81 #define EXTEND_L(i) ((i) << 4 | (i) & 15)
82 1 init_put_bits(&pb, temp, SIZE);
83
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 8192 for (i = 0; i < COUNT; i++)
84 8191 set_ue_golomb_long(&pb, EXTEND_L(i));
85 1 flush_put_bits(&pb);
86
87 1 init_get_bits(&gb, temp, 8 * SIZE);
88
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 8192 for (i = 0; i < COUNT; i++) {
89 8191 int j, s = show_bits_long(&gb, 32);
90
91 8191 j = get_ue_golomb_long(&gb);
92
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 8191 if (j != EXTEND_L(i)) {
93 ✗ fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
94 ✗ "bits: %8x\n", EXTEND_L(i), j, s);
95 ✗ ret = 1;
96 }
97 }
98
99 1 init_put_bits(&pb, temp, SIZE);
100
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 8192 for (i = 0; i < COUNT; i++)
101 8191 set_se_golomb(&pb, i - COUNT / 2);
102 1 flush_put_bits(&pb);
103
104 1 init_get_bits(&gb, temp, 8 * SIZE);
105
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 8192 for (i = 0; i < COUNT; i++) {
106 8191 int j, s = show_bits(&gb, 25);
107
108 8191 j = get_se_golomb(&gb);
109
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 8191 if (j != i - COUNT / 2) {
110 ✗ fprintf(stderr, "get_se_golomb: expected %d, got %d. bits: %7x\n",
111 i - COUNT / 2, j, s);
112 ✗ ret = 1;
113 }
114 }
115
116 1 av_free(temp);
117
118 1 return ret;
119 }
120