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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#ifndef LPCNET_PRIVATE_H
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#define LPCNET_PRIVATE_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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#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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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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};
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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, unsigned char buf[8]);
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#endif
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