bands.h

/* Copyright (c) 2007-2008 CSIRO
 Copyright (c) 2007-2009 Xiph.Org Foundation
 Copyright (c) 2008-2009 Gregory Maxwell
 Written by Jean-Marc Valin and Gregory Maxwell */
/*
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:

 - Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.

 - Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef BANDS_H
#define BANDS_H

#include "arch.h"
#include "modes.h"
#include "entenc.h"
#include "entdec.h"
#include "rate.h"

opus_int16 bitexact_cos(opus_int16 x);
int bitexact_log2tan(int isin,int icos);

void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM, int arch);

/*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/

void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M);

void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
 celt_sig * OPUS_RESTRICT freq, const opus_val16 *bandE, int start,
 int end, int M, int downsample, int silence);

#define SPREAD_NONE (0)
#define SPREAD_LIGHT (1)
#define SPREAD_NORMAL (2)
#define SPREAD_AGGRESSIVE (3)

int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
 int last_decision, int *hf_average, int *tapset_decision, int update_hf,
 int end, int C, int M);

#ifdef MEASURE_NORM_MSE
void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, float *bandE0, int M, int N, int C);
#endif

void haar1(celt_norm *X, int N0, int stride);

void quant_all_bands(int encode, const CELTMode *m, int start, int end,
 celt_norm * X, celt_norm * Y, unsigned char *collapse_masks,
 const celt_ener *bandE, int *pulses, int shortBlocks, int spread,
 int dual_stereo, int intensity, int *tf_res, opus_int32 total_bits,
 opus_int32 balance, ec_ctx *ec, int M, int codedBands, opus_uint32 *seed,
 int complexity, int arch, int disable_inv);

void anti_collapse(const CELTMode *m, celt_norm *X_,
 unsigned char *collapse_masks, int LM, int C, int size, int start,
 int end, const opus_val16 *logE, const opus_val16 *prev1logE,
 const opus_val16 *prev2logE, const int *pulses, opus_uint32 seed,
 int arch);

opus_uint32 celt_lcg_rand(opus_uint32 seed);

int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev);

#endif /* BANDS_H */