graph2dot: Use the fallback getopt implementation if needed
[libav.git] / tools / probetest.c
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1/*
2 * copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
3 *
2912e87a 4 * This file is part of Libav.
6e7ef5ec 5 *
2912e87a 6 * Libav is free software; you can redistribute it and/or
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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 *
2912e87a 11 * Libav is distributed in the hope that it will be useful,
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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
2912e87a 17 * License along with Libav; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include <stdlib.h>
22
23#include "libavformat/avformat.h"
24#include "libavcodec/put_bits.h"
25#include "libavutil/lfg.h"
26
27static int score_array[1000]; //this must be larger than the number of formats
497559ec 28static int failures = 0;
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29
30static void probe(AVProbeData *pd, int type, int p, int size)
31{
ff19d438 32 int i = 0;
ad2d0fdf 33 AVInputFormat *fmt = NULL;
6e7ef5ec 34
ad2d0fdf 35 while ((fmt = av_iformat_next(fmt))) {
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36 if (fmt->flags & AVFMT_NOFILE)
37 continue;
38 if (fmt->read_probe) {
39 int score = fmt->read_probe(pd);
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40 if (score > score_array[i] && score > AVPROBE_SCORE_MAX / 4) {
41 score_array[i] = score;
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42 fprintf(stderr,
43 "Failure of %s probing code with score=%d type=%d p=%X size=%d\n",
497559ec 44 fmt->name, score, type, p, size);
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45 failures++;
46 }
47 }
48 i++;
49 }
50}
51
9407246d 52int main(void)
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53{
54 unsigned int p, i, type, size, retry;
55 AVProbeData pd;
56 AVLFG state;
57 PutBitContext pb;
58
59 avcodec_register_all();
60 av_register_all();
61
62 av_lfg_init(&state, 0xdeadbeef);
63
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64 pd.buf = NULL;
65 for (size = 1; size < 65537; size *= 2) {
66 pd.buf_size = size;
67 pd.buf = av_realloc(pd.buf, size + AVPROBE_PADDING_SIZE);
68 pd.filename = "";
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69
70 fprintf(stderr, "testing size=%d\n", size);
71
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72 for (retry = 0; retry < 4097; retry += FFMAX(size, 32)) {
73 for (type = 0; type < 4; type++) {
74 for (p = 0; p < 4096; p++) {
75 unsigned hist = 0;
6e7ef5ec 76 init_put_bits(&pb, pd.buf, size);
497559ec 77 switch (type) {
6e7ef5ec 78 case 0:
4e81b5f5 79 for (i = 0; i < size * 8; i++)
497559ec 80 put_bits(&pb, 1, (av_lfg_get(&state) & 0xFFFFFFFF) > p << 20);
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81 break;
82 case 1:
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83 for (i = 0; i < size * 8; i++) {
84 unsigned int p2 = hist ? p & 0x3F : (p >> 6);
85 unsigned int v = (av_lfg_get(&state) & 0xFFFFFFFF) > p2 << 26;
6e7ef5ec 86 put_bits(&pb, 1, v);
497559ec 87 hist = v;
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88 }
89 break;
90 case 2:
497559ec 91 for (i = 0; i < size * 8; i++) {
4e81b5f5 92 unsigned int p2 = (p >> (hist * 3)) & 7;
497559ec 93 unsigned int v = (av_lfg_get(&state) & 0xFFFFFFFF) > p2 << 29;
6e7ef5ec 94 put_bits(&pb, 1, v);
4e81b5f5 95 hist = (2 * hist + v) & 3;
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96 }
97 break;
98 case 3:
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99 for (i = 0; i < size; i++) {
100 int c = 0;
101 while (p & 63) {
102 c = (av_lfg_get(&state) & 0xFFFFFFFF) >> 24;
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103 if (c >= 'a' && c <= 'z' && (p & 1))
104 break;
105 else if (c >= 'A' && c <= 'Z' && (p & 2))
106 break;
107 else if (c >= '0' && c <= '9' && (p & 4))
108 break;
109 else if (c == ' ' && (p & 8))
110 break;
111 else if (c == 0 && (p & 16))
112 break;
113 else if (c == 1 && (p & 32))
114 break;
6e7ef5ec 115 }
497559ec 116 pd.buf[i] = c;
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117 }
118 }
119 flush_put_bits(&pb);
120 probe(&pd, type, p, size);
121 }
122 }
123 }
124 }
125 return failures;
126}