mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-12-15 06:30:49 +00:00
114 lines
5 KiB
C
114 lines
5 KiB
C
/* 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"
|
|
|
|
/** Compute the amplitude (sqrt energy) in each of the bands
|
|
* @param m Mode data
|
|
* @param X Spectrum
|
|
* @param bandE Square root of the energy for each band (returned)
|
|
*/
|
|
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int M);
|
|
|
|
/*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/
|
|
|
|
/** Normalise each band of X such that the energy in each band is
|
|
equal to 1
|
|
* @param m Mode data
|
|
* @param X Spectrum (returned normalised)
|
|
* @param bandE Square root of the energy for each band
|
|
*/
|
|
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);
|
|
|
|
/** Denormalise each band of X to restore full amplitude
|
|
* @param m Mode data
|
|
* @param X Spectrum (returned de-normalised)
|
|
* @param bandE Square root of the energy for each band
|
|
*/
|
|
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 C, int M);
|
|
|
|
#define SPREAD_NONE (0)
|
|
#define SPREAD_LIGHT (1)
|
|
#define SPREAD_NORMAL (2)
|
|
#define SPREAD_AGGRESSIVE (3)
|
|
|
|
int spreading_decision(const CELTMode *m, 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);
|
|
|
|
/** Quantisation/encoding of the residual spectrum
|
|
* @param encode flag that indicates whether we're encoding (1) or decoding (0)
|
|
* @param m Mode data
|
|
* @param start First band to process
|
|
* @param end Last band to process + 1
|
|
* @param X Residual (normalised)
|
|
* @param Y Residual (normalised) for second channel (or NULL for mono)
|
|
* @param collapse_masks Anti-collapse tracking mask
|
|
* @param bandE Square root of the energy for each band
|
|
* @param pulses Bit allocation (per band) for PVQ
|
|
* @param shortBlocks Zero for long blocks, non-zero for short blocks
|
|
* @param spread Amount of spreading to use
|
|
* @param dual_stereo Zero for MS stereo, non-zero for dual stereo
|
|
* @param intensity First band to use intensity stereo
|
|
* @param tf_res Time-frequency resolution change
|
|
* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
|
|
* @param balance Number of unallocated bits
|
|
* @param en Entropy coder state
|
|
* @param LM log2() of the number of 2.5 subframes in the frame
|
|
* @param codedBands Last band to receive bits + 1
|
|
* @param seed Random generator seed
|
|
*/
|
|
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);
|
|
|
|
void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_masks, int LM, int C, int size,
|
|
int start, int end, opus_val16 *logE, opus_val16 *prev1logE,
|
|
opus_val16 *prev2logE, int *pulses, opus_uint32 seed);
|
|
|
|
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 */
|