995dcb610c
Took the opportunity to undo the Godot changed made to the
opus source. The opus module should eventually be built in its
own environment to avoid polluting others with too many include
dirs and defines.
TODO: Fix the platform/ stuff for opus.
(cherry picked from commit d9a291f641)
speex module was only added while cherry-picking, as speex is removed
in the master branch but we don't want to break compatibility in 2.1.x.
Unbundling wasn't done as the module uses the internal speex_free,
so it would require some more work.
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
/* Copyright (c) 2007-2008 CSIRO
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Copyright (c) 2007-2009 Xiph.Org Foundation
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Written by Jean-Marc Valin */
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/**
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@file vq.h
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@brief Vector quantisation of the residual
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*/
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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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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 COPYRIGHT OWNER
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OR 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 VQ_H
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#define VQ_H
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#include "entenc.h"
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#include "entdec.h"
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#include "modes.h"
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#if defined(MIPSr1_ASM)
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#include "mips/vq_mipsr1.h"
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#endif
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/** Algebraic pulse-vector quantiser. The signal x is replaced by the sum of
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* the pitch and a combination of pulses such that its norm is still equal
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* to 1. This is the function that will typically require the most CPU.
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* @param X Residual signal to quantise/encode (returns quantised version)
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* @param N Number of samples to encode
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* @param K Number of pulses to use
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* @param enc Entropy encoder state
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* @ret A mask indicating which blocks in the band received pulses
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*/
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unsigned alg_quant(celt_norm *X, int N, int K, int spread, int B,
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ec_enc *enc
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#ifdef RESYNTH
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, opus_val16 gain
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#endif
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);
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/** Algebraic pulse decoder
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* @param X Decoded normalised spectrum (returned)
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* @param N Number of samples to decode
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* @param K Number of pulses to use
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* @param dec Entropy decoder state
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* @ret A mask indicating which blocks in the band received pulses
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*/
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unsigned alg_unquant(celt_norm *X, int N, int K, int spread, int B,
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ec_dec *dec, opus_val16 gain);
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void renormalise_vector(celt_norm *X, int N, opus_val16 gain, int arch);
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int stereo_itheta(const celt_norm *X, const celt_norm *Y, int stereo, int N, int arch);
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#endif /* VQ_H */
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