Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / golomb-test.c
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/mem.h"
25
26 #include "get_bits.h"
27 #include "golomb.h"
28 #include "put_bits.h"
29
30 #define COUNT 8191
31 #define SIZE (COUNT * 4)
32
33 int main(void)
34 {
35 int i, ret = 0;
36 uint8_t *temp;
37 PutBitContext pb;
38 GetBitContext gb;
39
40 temp = av_malloc(SIZE);
41 if (!temp)
42 return 2;
43
44 init_put_bits(&pb, temp, SIZE);
45 for (i = 0; i < COUNT; i++)
46 set_ue_golomb(&pb, i);
47 flush_put_bits(&pb);
48
49 init_get_bits(&gb, temp, 8 * SIZE);
50 for (i = 0; i < COUNT; i++) {
51 int j, s = show_bits(&gb, 25);
52
53 j = get_ue_golomb(&gb);
54 if (j != i) {
55 fprintf(stderr, "get_ue_golomb: expected %d, got %d. bits: %7x\n",
56 i, j, s);
57 ret = 1;
58 }
59 }
60
61 #define EXTEND(i) ((i) << 3 | (i) & 7)
62 init_put_bits(&pb, temp, SIZE);
63 for (i = 0; i < COUNT; i++)
64 set_ue_golomb(&pb, EXTEND(i));
65 flush_put_bits(&pb);
66
67 init_get_bits(&gb, temp, 8 * SIZE);
68 for (i = 0; i < COUNT; i++) {
69 int j, s = show_bits_long(&gb, 32);
70
71 j = get_ue_golomb_long(&gb);
72 if (j != EXTEND(i)) {
73 fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
74 "bits: %8x\n", EXTEND(i), j, s);
75 ret = 1;
76 }
77 }
78
79 init_put_bits(&pb, temp, SIZE);
80 for (i = 0; i < COUNT; i++)
81 set_se_golomb(&pb, i - COUNT / 2);
82 flush_put_bits(&pb);
83
84 init_get_bits(&gb, temp, 8 * SIZE);
85 for (i = 0; i < COUNT; i++) {
86 int j, s = show_bits(&gb, 25);
87
88 j = get_se_golomb(&gb);
89 if (j != i - COUNT / 2) {
90 fprintf(stderr, "get_se_golomb: expected %d, got %d. bits: %7x\n",
91 i - COUNT / 2, j, s);
92 ret = 1;
93 }
94 }
95
96 av_free(temp);
97
98 return ret;
99 }