1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libopus/celt/vq.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,70 @@
1.4 +/* Copyright (c) 2007-2008 CSIRO
1.5 + Copyright (c) 2007-2009 Xiph.Org Foundation
1.6 + Written by Jean-Marc Valin */
1.7 +/**
1.8 + @file vq.h
1.9 + @brief Vector quantisation of the residual
1.10 + */
1.11 +/*
1.12 + Redistribution and use in source and binary forms, with or without
1.13 + modification, are permitted provided that the following conditions
1.14 + are met:
1.15 +
1.16 + - Redistributions of source code must retain the above copyright
1.17 + notice, this list of conditions and the following disclaimer.
1.18 +
1.19 + - Redistributions in binary form must reproduce the above copyright
1.20 + notice, this list of conditions and the following disclaimer in the
1.21 + documentation and/or other materials provided with the distribution.
1.22 +
1.23 + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.24 + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.25 + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.26 + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
1.27 + OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.28 + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.29 + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.30 + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.31 + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.32 + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.33 + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.34 +*/
1.35 +
1.36 +#ifndef VQ_H
1.37 +#define VQ_H
1.38 +
1.39 +#include "entenc.h"
1.40 +#include "entdec.h"
1.41 +#include "modes.h"
1.42 +
1.43 +/** Algebraic pulse-vector quantiser. The signal x is replaced by the sum of
1.44 + * the pitch and a combination of pulses such that its norm is still equal
1.45 + * to 1. This is the function that will typically require the most CPU.
1.46 + * @param X Residual signal to quantise/encode (returns quantised version)
1.47 + * @param N Number of samples to encode
1.48 + * @param K Number of pulses to use
1.49 + * @param enc Entropy encoder state
1.50 + * @ret A mask indicating which blocks in the band received pulses
1.51 +*/
1.52 +unsigned alg_quant(celt_norm *X, int N, int K, int spread, int B,
1.53 + ec_enc *enc
1.54 +#ifdef RESYNTH
1.55 + , opus_val16 gain
1.56 +#endif
1.57 + );
1.58 +
1.59 +/** Algebraic pulse decoder
1.60 + * @param X Decoded normalised spectrum (returned)
1.61 + * @param N Number of samples to decode
1.62 + * @param K Number of pulses to use
1.63 + * @param dec Entropy decoder state
1.64 + * @ret A mask indicating which blocks in the band received pulses
1.65 + */
1.66 +unsigned alg_unquant(celt_norm *X, int N, int K, int spread, int B,
1.67 + ec_dec *dec, opus_val16 gain);
1.68 +
1.69 +void renormalise_vector(celt_norm *X, int N, opus_val16 gain);
1.70 +
1.71 +int stereo_itheta(celt_norm *X, celt_norm *Y, int stereo, int N);
1.72 +
1.73 +#endif /* VQ_H */
