95 lines
3.5 KiB
C
Executable file
95 lines
3.5 KiB
C
Executable file
/* (C) 2001-2008 Timothy B. Terriberry
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(C) 2008 Jean-Marc Valin */
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cc6_celt_types.h"
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#if !defined(cc6__entcode_H)
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# define cc6__entcode_H (1)
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# include <limits.h>
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# include "cc6_ecintrin.h"
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typedef cc6_celt_int32_t cc6_ec_int32;
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typedef cc6_celt_uint32_t cc6_ec_uint32;
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typedef cc6_celt_uint64_t cc6_ec_uint64;
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typedef struct cc6_ec_byte_buffer cc6_ec_byte_buffer;
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/*The number of bits to code at a time when coding bits directly.*/
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# define cc6_EC_UNIT_BITS (8)
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/*The mask for the given bits.*/
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# define cc6_EC_UNIT_MASK ((1U<<cc6_EC_UNIT_BITS)-1)
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/*Simple libogg1-style buffer.*/
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struct cc6_ec_byte_buffer{
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unsigned char *buf;
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unsigned char *ptr;
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long storage;
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int resizable;
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};
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/*Encoding functions.*/
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void cc6_ec_byte_writeinit_buffer(cc6_ec_byte_buffer *_b, unsigned char *_buf, long _size);
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void cc6_ec_byte_writeinit(cc6_ec_byte_buffer *_b);
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void cc6_ec_byte_writetrunc(cc6_ec_byte_buffer *_b,long _bytes);
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void cc6_ec_byte_write1(cc6_ec_byte_buffer *_b,unsigned _value);
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void cc6_ec_byte_write4(cc6_ec_byte_buffer *_b,cc6_ec_uint32 _value);
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void cc6_ec_byte_writecopy(cc6_ec_byte_buffer *_b,void *_source,long _bytes);
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void cc6_ec_byte_writeclear(cc6_ec_byte_buffer *_b);
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/*Decoding functions.*/
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void cc6_ec_byte_readinit(cc6_ec_byte_buffer *_b,unsigned char *_buf,long _bytes);
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int cc6_ec_byte_look1(cc6_ec_byte_buffer *_b);
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int cc6_ec_byte_look4(cc6_ec_byte_buffer *_b,cc6_ec_uint32 *_val);
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void cc6_ec_byte_adv1(cc6_ec_byte_buffer *_b);
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void cc6_ec_byte_adv4(cc6_ec_byte_buffer *_b);
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int cc6_ec_byte_read1(cc6_ec_byte_buffer *_b);
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int cc6_ec_byte_read4(cc6_ec_byte_buffer *_b,cc6_ec_uint32 *_val);
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/*Shared functions.*/
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static __inline void cc6_ec_byte_reset(cc6_ec_byte_buffer *_b){
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_b->ptr=_b->buf;
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}
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static __inline long cc6_ec_byte_bytes(cc6_ec_byte_buffer *_b){
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return _b->ptr-_b->buf;
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}
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static __inline unsigned char *cc6_ec_byte_get_buffer(cc6_ec_byte_buffer *_b){
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return _b->buf;
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}
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int cc6_ec_ilog(cc6_ec_uint32 _v);
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int cc6_ec_ilog64(cc6_ec_uint64 _v);
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#endif
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