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5
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1 /*
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2 * SpanDSP - a series of DSP components for telephony
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3 *
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4 * bitstream.h - Bitstream composition and decomposition routines.
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5 *
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6 * Written by Steve Underwood <steveu@coppice.org>
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7 *
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8 * Copyright (C) 2006 Steve Underwood
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9 *
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10 * All rights reserved.
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11 *
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12 * This program is free software; you can redistribute it and/or modify
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13 * it under the terms of the GNU General Public License version 2, as
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14 * published by the Free Software Foundation.
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15 *
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16 * This program is distributed in the hope that it will be useful,
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17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 * GNU General Public License for more details.
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20 *
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21 * You should have received a copy of the GNU General Public License
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22 * along with this program; if not, write to the Free Software
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23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 *
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25 * $Id: bitstream.h,v 1.3 2006/10/24 13:45:28 steveu Exp $
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26 */
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27
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28 /*! \file */
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29
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30 #if !defined(_BITSTREAM_H_)
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31 #define _BITSTREAM_H_
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32
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33 /*! \page bitstream_page Bitstream composition and decomposition
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34 \section bitstream_page_sec_1 What does it do?
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35
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36 \section bitstream_page_sec_2 How does it work?
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37 */
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38
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39 typedef struct
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40 {
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41 unsigned int bitstream;
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42 unsigned int residue;
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43 } bitstream_state_t;
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44
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45
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46 #ifdef __cplusplus
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47 extern "C" {
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48 #endif
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49
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50 bitstream_state_t *bitstream_init(bitstream_state_t *s);
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51
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52 void bitstream_put(bitstream_state_t *s, uint8_t **c, unsigned int value, int bits);
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53
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54 void bitstream_flush(bitstream_state_t *s, uint8_t **c);
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55
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56 void bitstream_put2(bitstream_state_t *s, uint8_t **c, unsigned int value, int bits);
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57
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58 void bitstream_flush2(bitstream_state_t *s, uint8_t **c);
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59
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60 unsigned int bitstream_get(bitstream_state_t *s, const uint8_t **c, int bits);
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61
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62 unsigned int bitstream_get2(bitstream_state_t *s, const uint8_t **c, int bits);
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63
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64 #ifdef __cplusplus
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65 }
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66 #endif
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67
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68 #endif
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69 /*- End of file ------------------------------------------------------------*/
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