/********************************************************
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SBC Example PLC ANSI-C Source Code
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This is copy from HFP spec, just only for study and demo.
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Please don't use in commercial product.
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File: sbcplc.h
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*****************************************************************************/
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#ifndef SBCPLC_H
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#define SBCPLC_H
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#define FS 120 /* Frame Size */
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#define N 256 /* 16ms - Window Length for pattern matching */
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#define M 64 /* 4ms - Template for matching */
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#define LHIST (N+FS-1) /* Length of history buffer required */
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#define SBCRT 36 /* SBC Reconvergence Time (samples) */
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#define OLAL 16 /* OverLap-Add Length (samples) */
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/* PLC State Information */
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struct PLC_State
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{
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short hist[LHIST+FS+SBCRT+OLAL];
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short bestlag;
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int nbf;
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};
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/* Prototypes */
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void InitPLC(struct PLC_State *plc_state);
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void PLC_bad_frame(struct PLC_State *plc_state, short *ZIRbuf, short *out);
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void PLC_good_frame(struct PLC_State *plc_state, short *in, short *out);
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#endif /* SBCPLC_H */
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