142 lines
5.0 KiB
C
142 lines
5.0 KiB
C
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/*---------------------------------------------------------------------------*\
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FILE........: quantise.h
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AUTHOR......: David Rowe
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DATE CREATED: 31/5/92
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Quantisation functions for the sinusoidal coder.
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\*---------------------------------------------------------------------------*/
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/*
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __QUANTISE__
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#define __QUANTISE__
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#include "codec2_fft.h"
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#include "comp.h"
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#define WO_BITS 7
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#define WO_LEVELS (1<<WO_BITS)
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#define WO_DT_BITS 3
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#define E_BITS 5
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#define E_LEVELS (1<<E_BITS)
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#define E_MIN_DB -10.0
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#define E_MAX_DB 40.0
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#define LSP_SCALAR_INDEXES 10
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#define LSPD_SCALAR_INDEXES 10
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#define LSP_PRED_VQ_INDEXES 3
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#define LSP_DIFF_FREQ_INDEXES 5
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#define LSP_DIFF_TIME_BITS 7
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#define LSPDT_ALL 0
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#define LSPDT_LOW 1
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#define LSPDT_HIGH 2
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#define WO_E_BITS 8
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#define LPCPF_GAMMA 0.5
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#define LPCPF_BETA 0.2
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void quantise_init(void);
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float lpc_model_amplitudes(float Sn[], float w[], MODEL *model, int order,
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int lsp,float ak[]);
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void aks_to_M2(codec2_fftr_cfg fftr_fwd_cfg, float ak[], int order, MODEL *model,
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float E, float *snr, int dump, int sim_pf,
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int pf, int bass_boost, float beta, float gamma, COMP Aw[]);
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int encode_Wo(C2CONST *c2const, float Wo, int bits);
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float decode_Wo(C2CONST *c2const, int index, int bits);
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int encode_log_Wo(C2CONST *c2const, float Wo, int bits);
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float decode_log_Wo(C2CONST *c2const, int index, int bits);
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#if 0
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int encode_Wo_dt(C2CONST *c2const, float Wo, float prev_Wo);
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float decode_Wo_dt(C2CONST *c2const, int index, float prev_Wo);
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#endif
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void encode_lsps_scalar(int indexes[], float lsp[], int order);
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void decode_lsps_scalar(float lsp[], int indexes[], int order);
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void encode_lspds_scalar(int indexes[], float lsp[], int order);
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void decode_lspds_scalar(float lsp[], int indexes[], int order);
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void encode_lsps_diff_freq_vq(int indexes[], float lsp[], int order);
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void decode_lsps_diff_freq_vq(float lsp_[], int indexes[], int order);
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void encode_lsps_diff_time(int indexes[],
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float lsp[],
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float lsp__prev[],
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int order);
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void decode_lsps_diff_time(float lsp_[],
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int indexes[],
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float lsp__prev[],
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int order);
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void encode_lsps_vq(int *indexes, float *x, float *xq, int order);
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void decode_lsps_vq(int *indexes, float *xq, int order, int stages);
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long quantise(const float * cb, float vec[], float w[], int k, int m, float *se);
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void lspvq_quantise(float lsp[], float lsp_[], int order);
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void lspjnd_quantise(float lsp[], float lsp_[], int order);
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void lspdt_quantise(float lsps[], float lsps_[], float lsps__prev[], int mode);
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void lspjvm_quantise(float lsps[], float lsps_[], int order);
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void lspanssi_quantise(float lsps[], float lsps_[], int order, int mbest_entries);
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float lspmelvq_quantise(float *x, float *xq, int order);
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float lspmelvq_mbest_encode(int *indexes, float *x, float *xq, int ndim, int mbest_entries);
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void lspmelvq_decode(int *indexes, float *xq, int ndim);
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void encode_mels_scalar(int mel_indexes[], float mels[], int order);
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void decode_mels_scalar(float mels[], int mel_indexes[], int order);
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void quantise_WoE(C2CONST *c2const, MODEL *model, float *e, float xq[]);
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int encode_WoE(MODEL *model, float e, float xq[]);
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void decode_WoE(C2CONST *c2const, MODEL *model, float *e, float xq[], int n1);
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int encode_energy(float e, int bits);
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float decode_energy(int index, int bits);
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void pack(unsigned char * bits, unsigned int *nbit, int index, unsigned int index_bits);
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void pack_natural_or_gray(unsigned char * bits, unsigned int *nbit, int index, unsigned int index_bits, unsigned int gray);
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int unpack(const unsigned char * bits, unsigned int *nbit, unsigned int index_bits);
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int unpack_natural_or_gray(const unsigned char * bits, unsigned int *nbit, unsigned int index_bits, unsigned int gray);
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int lsp_bits(int i);
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int lspd_bits(int i);
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int lspdt_bits(int i);
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int lsp_pred_vq_bits(int i);
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int mel_bits(int i);
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int lspmelvq_cb_bits(int i);
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void apply_lpc_correction(MODEL *model);
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float speech_to_uq_lsps(float lsp[],
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float ak[],
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float Sn[],
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float w[],
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int m_pitch,
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int order
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);
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int check_lsp_order(float lsp[], int lpc_order);
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void bw_expand_lsps(float lsp[], int order, float min_sep_low, float min_sep_high);
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void bw_expand_lsps2(float lsp[], int order);
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void locate_lsps_jnd_steps(float lsp[], int order);
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float decode_amplitudes(MODEL *model,
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float ak[],
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int lsp_indexes[],
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int energy_index,
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float lsps[],
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float *e);
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#endif
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