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124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
#ifndef LPCNET_PRIVATE_H
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#define LPCNET_PRIVATE_H
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#include <stdio.h>
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#include "common.h"
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#include "freq.h"
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#include "lpcnet.h"
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#include "nnet_data.h"
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#include "plc_data.h"
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#include "kiss99.h"
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#define BITS_PER_CHAR 8
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#define PITCH_MIN_PERIOD 32
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#define PITCH_MAX_PERIOD 256
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#define PITCH_FRAME_SIZE 320
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#define PITCH_BUF_SIZE (PITCH_MAX_PERIOD+PITCH_FRAME_SIZE)
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#define MULTI 4
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#define MULTI_MASK (MULTI-1)
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#define FORBIDDEN_INTERP 7
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#define PLC_MAX_FEC 100
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struct LPCNetState {
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NNetState nnet;
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int last_exc;
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float last_sig[LPC_ORDER];
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float last_features[NB_FEATURES];
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#if FEATURES_DELAY>0
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float old_lpc[FEATURES_DELAY][LPC_ORDER];
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#endif
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float sampling_logit_table[256];
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float gru_a_condition[3*GRU_A_STATE_SIZE];
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float gru_b_condition[3*GRU_B_STATE_SIZE];
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int frame_count;
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float deemph_mem;
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float lpc[LPC_ORDER];
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kiss99_ctx rng;
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};
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struct LPCNetDecState {
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LPCNetState lpcnet_state;
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float vq_mem[NB_BANDS];
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};
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struct LPCNetEncState{
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float analysis_mem[OVERLAP_SIZE];
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float mem_preemph;
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int pcount;
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float pitch_mem[LPC_ORDER];
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float pitch_filt;
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float xc[10][PITCH_MAX_PERIOD+1];
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float frame_weight[10];
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float exc_buf[PITCH_BUF_SIZE];
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float pitch_max_path[2][PITCH_MAX_PERIOD];
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float pitch_max_path_all;
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int best_i;
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float last_gain;
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int last_period;
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float lpc[LPC_ORDER];
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float vq_mem[NB_BANDS];
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float features[4][NB_TOTAL_FEATURES];
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float sig_mem[LPC_ORDER];
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int exc_mem;
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float burg_cepstrum[2*NB_BANDS];
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};
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#define PLC_BUF_SIZE (FEATURES_DELAY*FRAME_SIZE + TRAINING_OFFSET)
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struct LPCNetPLCState {
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LPCNetState lpcnet;
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LPCNetEncState enc;
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float fec[PLC_MAX_FEC][NB_FEATURES];
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int fec_keep_pos;
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int fec_read_pos;
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int fec_fill_pos;
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int fec_active;
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short pcm[PLC_BUF_SIZE+FRAME_SIZE];
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int pcm_fill;
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int skip_analysis;
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int blend;
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float features[NB_TOTAL_FEATURES];
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int loss_count;
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PLCNetState plc_net;
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PLCNetState plc_copy[FEATURES_DELAY+1];
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int enable_blending;
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int non_causal;
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double dc_mem;
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double syn_dc;
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int remove_dc;
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short dc_buf[TRAINING_OFFSET];
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int queued_update;
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short queued_samples[FRAME_SIZE];
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};
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extern float ceps_codebook1[];
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extern float ceps_codebook2[];
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extern float ceps_codebook3[];
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extern float ceps_codebook_diff4[];
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void preemphasis(float *y, float *mem, const float *x, float coef, int N);
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void perform_double_interp(float features[4][NB_TOTAL_FEATURES], const float *mem, int best_id);
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void process_superframe(LPCNetEncState *st, unsigned char *buf, FILE *ffeat, int encode, int quantize);
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void compute_frame_features(LPCNetEncState *st, const float *in);
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void decode_packet(float features[4][NB_TOTAL_FEATURES], float *vq_mem, const unsigned char buf[8]);
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void run_frame_network(LPCNetState *lpcnet, float *gru_a_condition, float *gru_b_condition, float *lpc, const float *features);
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void lpcnet_synthesize_tail_impl(LPCNetState *lpcnet, short *output, int N, int preload);
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void lpcnet_synthesize_impl(LPCNetState *lpcnet, const float *features, short *output, int N, int preload);
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void lpcnet_synthesize_blend_impl(LPCNetState *lpcnet, const short *pcm_in, short *output, int N);
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void process_single_frame(LPCNetEncState *st, FILE *ffeat);
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int lpcnet_compute_single_frame_features(LPCNetEncState *st, const short *pcm, float features[NB_TOTAL_FEATURES]);
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void process_single_frame(LPCNetEncState *st, FILE *ffeat);
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void run_frame_network(LPCNetState *lpcnet, float *gru_a_condition, float *gru_b_condition, float *lpc, const float *features);
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#endif
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