1 /*
2 * ss.c --
3 *
4 * FIXME: This file needs a description here.
5 *
6 * Copyright (c) 1996-2002 The Regents of the University of California.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 * A. Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 * B. Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * C. Neither the names of the copyright holders nor the names of its
18 * contributors may be used to endorse or promote products derived from this
19 * software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
22 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <stdio.h>
35 #include <sys/param.h>
36
37 void
38 scan_startcodes(FILE* f)
39 {
40 int v;
41 int n = 0;
42 u_int bb;
43
44 bb = getc(f);
45 bb <<= 8;
46 bb |= getc(f);
47 v = getc(f);
48 bb <<= 4;
49 bb |= v >> 4;
50 v <<= 4;
51 for (;;) {
52 int bit;
53 for (bit = 0; bit < 4; ++bit) {
54 if ((bb & 0xffff0) == 0x00010)
55 printf("%d\n", bb & 0xf);
56
57 bb <<= 1;
58 v <<= 1;
59 bb |= (v >> 8) & 1;
60 }
61 v = getc(f);
62 if (feof(f))
63 break;
64 for (; bit < 8; ++bit) {
65 if ((bb & 0xffff0) == 0x00010)
66 printf("%d\n", bb & 0xf);
67
68 bb <<= 1;
69 v <<= 1;
70 bb |= (v >> 8) & 1;
71 }
72 }
73 }
74
75 int
76 main(int argc, char **argv)
77 {
78 FILE *f;
79
80 if (argc != 2)
81 exit(1);
82
83 f = fopen(argv[1], "r");
84 if (f == 0) {
85 perror(argv[1]);
86 exit(1);
87 }
88 scan_startcodes(f);
89 exit(0);
90 }
91
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