5ee9715c5c
It is no slower with a large number of pulses, and as much as 30% faster with a large number of dimensions.
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/* (C) 2007-2008 Timothy Terriberry */
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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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#ifndef CWRS_H
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#define CWRS_H
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#include "arch.h"
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#include "stack_alloc.h"
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#include "entenc.h"
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#include "entdec.h"
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/* Returns log of an integer with fractional accuracy */
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int log2_frac64(ec_uint64 val, int frac);
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/* Whether the CWRS codebook will fit into 32 bits */
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int fits_in32(int _n, int _m);
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/* Whether the CWRS codebook will fit into 64 bits */
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int fits_in64(int _n, int _m);
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/* 32-bit versions */
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celt_uint32_t ncwrs_u32(int _n,int _m,celt_uint32_t *_u);
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void cwrsi32(int _n,int _m,celt_uint32_t _i,int *_y,celt_uint32_t *_u);
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celt_uint32_t icwrs32(int _n,int _m,celt_uint32_t *_nc,const int *_y,
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celt_uint32_t *_u);
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/* 64-bit versions */
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celt_uint64_t ncwrs_u64(int _n,int _m,celt_uint64_t *_u);
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void cwrsi64(int _n,int _m,celt_uint64_t _i,int *_y,celt_uint64_t *_u);
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celt_uint64_t icwrs64(int _n,int _m,celt_uint64_t *_nc,const int *_y,
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celt_uint64_t *_u);
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int get_required_bits(int N, int K, int frac);
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void encode_pulses(int *_y, int N, int K, ec_enc *enc);
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void decode_pulses(int *_y, int N, int K, ec_dec *dec);
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#endif /* CWRS_H */
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