avcodec: add a public function, avcodec_fill_audio_frame().
[libav.git] / tools / probetest.c
1 /*
2 * copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of Libav.
5 *
6 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
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
27 static int score_array[1000]; //this must be larger than the number of formats
28 static int failures = 0;
29
30 static void probe(AVProbeData *pd, int type, int p, int size)
31 {
32 int i = 0;
33 AVInputFormat *fmt = NULL;
34
35 while ((fmt = av_iformat_next(fmt))) {
36 if (fmt->flags & AVFMT_NOFILE)
37 continue;
38 if (fmt->read_probe) {
39 int score = fmt->read_probe(pd);
40 if (score > score_array[i] && score > AVPROBE_SCORE_MAX / 4) {
41 score_array[i] = score;
42 fprintf(stderr, "Failure of %s probing code with score=%d type=%d p=%X size=%d\n",
43 fmt->name, score, type, p, size);
44 failures++;
45 }
46 }
47 i++;
48 }
49 }
50
51 int main(void)
52 {
53 unsigned int p, i, type, size, retry;
54 AVProbeData pd;
55 AVLFG state;
56 PutBitContext pb;
57
58 avcodec_register_all();
59 av_register_all();
60
61 av_lfg_init(&state, 0xdeadbeef);
62
63 pd.buf = NULL;
64 for (size = 1; size < 65537; size *= 2) {
65 pd.buf_size = size;
66 pd.buf = av_realloc(pd.buf, size + AVPROBE_PADDING_SIZE);
67 pd.filename = "";
68
69 fprintf(stderr, "testing size=%d\n", size);
70
71 for (retry = 0; retry < 4097; retry += FFMAX(size, 32)) {
72 for (type = 0; type < 4; type++) {
73 for (p = 0; p < 4096; p++) {
74 unsigned hist = 0;
75 init_put_bits(&pb, pd.buf, size);
76 switch (type) {
77 case 0:
78 for (i = 0; i < size * 8; i++) {
79 put_bits(&pb, 1, (av_lfg_get(&state) & 0xFFFFFFFF) > p << 20);
80 }
81 break;
82 case 1:
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;
86 put_bits(&pb, 1, v);
87 hist = v;
88 }
89 break;
90 case 2:
91 for (i = 0; i < size * 8; i++) {
92 unsigned int p2 = (p >> (hist*3)) & 7;
93 unsigned int v = (av_lfg_get(&state) & 0xFFFFFFFF) > p2 << 29;
94 put_bits(&pb, 1, v);
95 hist = (2*hist + v) & 3;
96 }
97 break;
98 case 3:
99 for (i = 0; i < size; i++) {
100 int c = 0;
101 while (p & 63) {
102 c = (av_lfg_get(&state) & 0xFFFFFFFF) >> 24;
103 if (c >= 'a' && c <= 'z' && (p & 1)) break;
104 else if(c >= 'A' && c <= 'Z' && (p & 2)) break;
105 else if(c >= '0' && c <= '9' && (p & 4)) break;
106 else if(c == ' ' && (p & 8)) break;
107 else if(c == 0 && (p & 16)) break;
108 else if(c == 1 && (p & 32)) break;
109 }
110 pd.buf[i] = c;
111 }
112 }
113 flush_put_bits(&pb);
114 probe(&pd, type, p, size);
115 }
116 }
117 }
118 }
119 return failures;
120 }