104 lines
4.9 KiB
C
104 lines
4.9 KiB
C
|
/* (C) 2007 Jean-Marc Valin, CSIRO
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
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.
|
||
|
|
|
||
|
|
- Neither the name of the Xiph.org Foundation nor the names of its
|
||
|
|
contributors may be used to endorse or promote products derived from
|
||
|
|
this software without specific prior written permission.
|
||
|
|
|
||
|
|
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 FOUNDATION 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 bands Square root of the energy for each band (returned)
|
||
|
|
*/
|
||
|
|
void compute_band_energies(const CELTMode *m, const celt_sig_t *X, celt_ener_t *bands);
|
||
|
|
|
||
|
|
void compute_noise_energies(const CELTMode *m, const celt_sig_t *X, const celt_word16_t *tonality, celt_ener_t *bank);
|
||
|
|
|
||
|
|
/** 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 bands Square root of the energy for each band
|
||
|
|
*/
|
||
|
|
void normalise_bands(const CELTMode *m, const celt_sig_t * __restrict freq, celt_norm_t * __restrict X, const celt_ener_t *bands);
|
||
|
|
|
||
|
|
void renormalise_bands(const CELTMode *m, celt_norm_t * __restrict X);
|
||
|
|
|
||
|
|
/** Denormalise each band of X to restore full amplitude
|
||
|
|
* @param m Mode data
|
||
|
|
* @param X Spectrum (returned de-normalised)
|
||
|
|
* @param bands Square root of the energy for each band
|
||
|
|
*/
|
||
|
|
void denormalise_bands(const CELTMode *m, const celt_norm_t * __restrict X, celt_sig_t * __restrict freq, const celt_ener_t *bands);
|
||
|
|
|
||
|
|
/** Compute the pitch predictor gain for each pitch band
|
||
|
|
* @param m Mode data
|
||
|
|
* @param X Spectrum to predict
|
||
|
|
* @param P Pitch vector (normalised)
|
||
|
|
* @param gains Gain computed for each pitch band (returned)
|
||
|
|
* @param bank Square root of the energy for each band
|
||
|
|
*/
|
||
|
|
int compute_pitch_gain(const CELTMode *m, const celt_norm_t *X, const celt_norm_t *P, celt_pgain_t *gains);
|
||
|
|
|
||
|
|
int folding_decision(const CELTMode *m, celt_norm_t *X, celt_word16_t *average, int *last_decision);
|
||
|
|
|
||
|
|
/** Quantisation/encoding of the residual spectrum
|
||
|
|
* @param m Mode data
|
||
|
|
* @param X Residual (normalised)
|
||
|
|
* @param P Pitch vector (normalised)
|
||
|
|
* @param W Perceptual weighting
|
||
|
|
* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
|
||
|
|
* @param enc Entropy encoder
|
||
|
|
*/
|
||
|
|
void quant_bands(const CELTMode *m, celt_norm_t * __restrict X, celt_norm_t *P, celt_mask_t *W, int pitch_used, celt_pgain_t *pgains, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_enc *enc);
|
||
|
|
|
||
|
|
void quant_bands_stereo(const CELTMode *m, celt_norm_t * __restrict X, celt_norm_t *P, celt_mask_t *W, int pitch_used, celt_pgain_t *pgains, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_enc *enc);
|
||
|
|
|
||
|
|
/** Decoding of the residual spectrum
|
||
|
|
* @param m Mode data
|
||
|
|
* @param X Residual (normalised)
|
||
|
|
* @param P Pitch vector (normalised)
|
||
|
|
* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
|
||
|
|
* @param dec Entropy decoder
|
||
|
|
*/
|
||
|
|
void unquant_bands(const CELTMode *m, celt_norm_t * __restrict X, celt_norm_t *P, int pitch_used, celt_pgain_t *pgains, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
|
||
|
|
|
||
|
|
void unquant_bands_stereo(const CELTMode *m, celt_norm_t * __restrict X, celt_norm_t *P, int pitch_used, celt_pgain_t *pgains, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
|
||
|
|
|
||
|
|
void stereo_decision(const CELTMode *m, celt_norm_t * __restrict X, int *stereo_mode, int len);
|
||
|
|
|
||
|
|
#endif /* BANDS_H */
|