2 * Copyright (c) 2001-2002, David Janssens
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
31 * Number of bytes written.
33 * returns number of bytes written
38 * Get position in byte stream.
40 * return position in bytes
45 * Set position in byte stream.
47 * pos : position, in number of bytes, from the beginning of the stream
49 void cio_seek(int pos);
52 * Number of bytes left before the end of the stream.
54 * Returns the number of bytes before the end of the stream
56 int cio_numbytesleft();
59 * Get pointer to the current position in the stream.
61 * return : pointer to the position
63 unsigned char *cio_getbp();
68 * bp : destination/source stream
69 * len : length of the stream
71 void cio_init(unsigned char *bp, int len);
77 * n : number of bytes to write
79 void cio_write(unsigned int v, int n);
84 * n : number of bytes to read
86 * return : value of the n bytes read
88 unsigned int cio_read(int n);
93 * n : number of bytes to skip
98 * Read n bytes, copy to buffer
100 void cio_read_to_buf(unsigned char* src_buf, int n);/* Glenn Pearson adds */
103 * Write n bytes, copy from buffer
105 void cio_write_from_buf(unsigned char* dest_buf, int n);/* Glenn Pearson adds */