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