media/libopus/celt/mfrngcod.h

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/media/libopus/celt/mfrngcod.h	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,48 @@
     1.4 +/* Copyright (c) 2001-2008 Timothy B. Terriberry
     1.5 +   Copyright (c) 2008-2009 Xiph.Org Foundation */
     1.6 +/*
     1.7 +   Redistribution and use in source and binary forms, with or without
     1.8 +   modification, are permitted provided that the following conditions
     1.9 +   are met:
    1.10 +
    1.11 +   - Redistributions of source code must retain the above copyright
    1.12 +   notice, this list of conditions and the following disclaimer.
    1.13 +
    1.14 +   - Redistributions in binary form must reproduce the above copyright
    1.15 +   notice, this list of conditions and the following disclaimer in the
    1.16 +   documentation and/or other materials provided with the distribution.
    1.17 +
    1.18 +   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    1.19 +   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    1.20 +   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    1.21 +   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
    1.22 +   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    1.23 +   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    1.24 +   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    1.25 +   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    1.26 +   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    1.27 +   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    1.28 +   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    1.29 +*/
    1.30 +
    1.31 +#if !defined(_mfrngcode_H)
    1.32 +# define _mfrngcode_H (1)
    1.33 +# include "entcode.h"
    1.34 +
    1.35 +/*Constants used by the entropy encoder/decoder.*/
    1.36 +
    1.37 +/*The number of bits to output at a time.*/
    1.38 +# define EC_SYM_BITS   (8)
    1.39 +/*The total number of bits in each of the state registers.*/
    1.40 +# define EC_CODE_BITS  (32)
    1.41 +/*The maximum symbol value.*/
    1.42 +# define EC_SYM_MAX    ((1U<<EC_SYM_BITS)-1)
    1.43 +/*Bits to shift by to move a symbol into the high-order position.*/
    1.44 +# define EC_CODE_SHIFT (EC_CODE_BITS-EC_SYM_BITS-1)
    1.45 +/*Carry bit of the high-order range symbol.*/
    1.46 +# define EC_CODE_TOP   (((opus_uint32)1U)<<(EC_CODE_BITS-1))
    1.47 +/*Low-order bit of the high-order range symbol.*/
    1.48 +# define EC_CODE_BOT   (EC_CODE_TOP>>EC_SYM_BITS)
    1.49 +/*The number of bits available for the last, partial symbol in the code field.*/
    1.50 +# define EC_CODE_EXTRA ((EC_CODE_BITS-2)%EC_SYM_BITS+1)
    1.51 +#endif

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