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98 lines
3.8 KiB
98 lines
3.8 KiB
/* 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(OPUS_X86_MAY_HAVE_SSE2) && !defined(FIXED_POINT)) |
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#include "x86/vq_sse.h" |
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#endif |
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#if defined(FIXED_POINT) |
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opus_val32 celt_inner_prod_norm(const celt_norm *x, const celt_norm *y, int len, int arch); |
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opus_val32 celt_inner_prod_norm_shift(const celt_norm *x, const celt_norm *y, int len, int arch); |
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void norm_scaleup(celt_norm *X, int N, int shift); |
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void norm_scaledown(celt_norm *X, int N, int shift); |
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#else |
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#define celt_inner_prod_norm celt_inner_prod |
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#define celt_inner_prod_norm_shift celt_inner_prod |
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#define norm_scaleup(X, N, shift) |
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#define norm_scaledown(X, N, shift) |
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#endif |
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void exp_rotation(celt_norm *X, int len, int dir, int stride, int K, int spread); |
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opus_val16 op_pvq_search_c(celt_norm *X, int *iy, int K, int N, int arch); |
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#if !defined(OVERRIDE_OP_PVQ_SEARCH) |
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#define op_pvq_search(x, iy, K, N, arch) \ |
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(op_pvq_search_c(x, iy, K, N, arch)) |
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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, ec_enc *enc, |
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opus_val32 gain, int resynth |
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ARG_QEXT(ec_enc *ext_enc) ARG_QEXT(int extra_bits), int arch); |
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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_val32 gain |
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ARG_QEXT(ec_enc *ext_dec) ARG_QEXT(int extra_bits)); |
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void renormalise_vector(celt_norm *X, int N, opus_val32 gain, int arch); |
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opus_int32 stereo_itheta(const celt_norm *X, const celt_norm *Y, int stereo, int N, int arch); |
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unsigned cubic_quant(celt_norm *X, int N, int K, int B, ec_enc *enc, opus_val32 gain, int resynth); |
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unsigned cubic_unquant(celt_norm *X, int N, int K, int B, ec_dec *dec, opus_val32 gain); |
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#endif /* VQ_H */
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