00001 /* 00002 * SpanDSP - a series of DSP components for telephony 00003 * 00004 * bitstream.h - Bitstream composition and decomposition routines. 00005 * 00006 * Written by Steve Underwood <steveu@coppice.org> 00007 * 00008 * Copyright (C) 2006 Steve Underwood 00009 * 00010 * All rights reserved. 00011 * 00012 * This program is free software; you can redistribute it and/or modify 00013 * it under the terms of the GNU General Public License version 2, as 00014 * published by the Free Software Foundation. 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU General Public License for more details. 00020 * 00021 * You should have received a copy of the GNU General Public License 00022 * along with this program; if not, write to the Free Software 00023 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00024 * 00025 * $Id: bitstream.h,v 1.6 2007/04/08 08:16:17 steveu Exp $ 00026 */ 00027 00028 /*! \file */ 00029 00030 #if !defined(_SPANDSP_BITSTREAM_H_) 00031 #define _SPANDSP_BITSTREAM_H_ 00032 00033 /*! \page bitstream_page Bitstream composition and decomposition 00034 \section bitstream_page_sec_1 What does it do? 00035 00036 \section bitstream_page_sec_2 How does it work? 00037 */ 00038 00039 typedef struct 00040 { 00041 unsigned int bitstream; 00042 unsigned int residue; 00043 } bitstream_state_t; 00044 00045 00046 #if defined(__cplusplus) 00047 extern "C" 00048 { 00049 #endif 00050 00051 bitstream_state_t *bitstream_init(bitstream_state_t *s); 00052 00053 void bitstream_put(bitstream_state_t *s, uint8_t **c, unsigned int value, int bits); 00054 00055 void bitstream_flush(bitstream_state_t *s, uint8_t **c); 00056 00057 void bitstream_put2(bitstream_state_t *s, uint8_t **c, unsigned int value, int bits); 00058 00059 void bitstream_flush2(bitstream_state_t *s, uint8_t **c); 00060 00061 unsigned int bitstream_get(bitstream_state_t *s, const uint8_t **c, int bits); 00062 00063 unsigned int bitstream_get2(bitstream_state_t *s, const uint8_t **c, int bits); 00064 00065 #if defined(__cplusplus) 00066 } 00067 #endif 00068 00069 #endif 00070 /*- End of file ------------------------------------------------------------*/