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#ifdef __cplusplus
extern "C" {#endif
/* nabtsdsp.c */Double dmin (Double x, Double y);Double dmin3 (Double x, Double y, Double z);int imin (int x, int y);int imin3 (int x, int y, int z);Double dmax (Double x, Double y);Double dmax3 (Double x, Double y, Double z);int imax (int x, int y);int imax3 (int x, int y, int z);int iabs (int x);int idivceil (int a, int b);int idivfloor (int a, int b);void NDSPInitGlobals (void);NDSPState *NDSPStateNew (void *memory);int NDSPStateSetSampleRate(NDSPState* pState, unsigned long samp_rate);int NDSPStateDestroy (NDSPState *pState);int NDSPStateConnectToFEC (NDSPState *pDSPState, NFECState *pFECState);int NDSPStartRetrain (NDSPState *pState);int NDSPResetFilter (NDSPState *pState);void Copy_d_8 (Double *pfOutput, unsigned char *pbInput, int nLen);void Convolve_d_d_filt_var (NDSPState *pState, Double *dest, int dest_begin, int dest_end, Double *a, int a_begin, int a_end, FIRFilter *pFilt, BOOL bSubtractMean);void Convolve_d_d_filt (Double *dest, int dest_begin, int dest_end, Double *a, int a_begin, int a_end, FIRFilter *pFilt, BOOL bSubtractMean);void Convolve_d_d_d (Double *dest, int dest_begin, int dest_end, Double *a, Double a_begin, Double a_end, Double a_step, Double *b, Double b_begin, Double b_end, Double b_step, BOOL bSubtractMean);void RecalcVariableFIRFilterBounds (FIRFilter *pFilter);void AddToVariableFIRFilter (FIRFilter *pFilter, int nCenterPos, int nLeftTaps, int nRightTaps, int nTapSpacing);void ClearVariableFIRFilter (FIRFilter *pFilter);void CopyFIRFilter (FIRFilter *pfilterDest, FIRFilter *pfilterSrc);int DoEqualizeFromGCRs (NDSPState *pState);int DoEqualizeFromNabsync (NDSPState *pState);int DoGCREqualFromSignal (NDSPState *pState, NDSPSigMatch *sigmatch, EqualizeMatch *eqm, FIRFilter *pfilterTemplate, int nAddTaps);int DoEqualize (NDSPState *pState);int ComputeOffsets (KS_VBIINFOHEADER *pVBIINFO, int *pnOffsetData, int *pnOffsetSamples);int NDSPProcessGCRLine (NDSPGCRStats *pLineStats, unsigned char *pbSamples, NDSPState *pState, int nFieldNumber, int nLineNumber, KS_VBIINFOHEADER *pVBIINFO);void NDSPResetGCRAcquisition (NDSPState *pState);void NDSPResetNabsyncAcquisition (NDSPState *pState);int NDSPAvgSigs (NDSPState *pState, Double *pdDest, NDSPSigMatch *psm, Double *dConvRet);void NDSPTryToInsertSig(NDSPState *pState, NDSPSigMatch *psm, Double dMaxval, unsigned char *pbSamples, int nOffset);void NDSPAcquireNabsync (NDSPState *pState, unsigned char *pbSamples);void NDSPAcquireGCR (NDSPState *pState, unsigned char *pbSamples);int NDSPSyncBytesToConfidence (unsigned char *pbSyncBytes);int NDSPDetectGCRConfidence (unsigned char *pbSamples);int NDSPPartialDecodeLine (unsigned char *pbDest, NDSPLineStats *pLineStats, unsigned char *pbSamples, NDSPState *pState, int nFECType, int nFieldNumber, int nLineNumber, int nStart, int nEnd, KS_VBIINFOHEADER *pVBIINFO);int NDSPDecodeLine (unsigned char *pbDest, NDSPLineStats *pLineStats, unsigned char *pbSamples, NDSPState *pState, int nFECType, int nFieldNumber, int nLineNumber, KS_VBIINFOHEADER *pVBIINFO);int NDSPStateSetFilter (NDSPState *pState, FIRFilter *filter, int nFilterSize);void NormalizeFilter (FIRFilter *pFilter);void NDSPDecodeFindSync (unsigned char *pbSamples, Double *pdSyncConfidence, Double *pdSyncStart, Double *pdDC, Double *pdAC, NDSPState *pState, KS_VBIINFOHEADER *pVBIINFO);int NDSPGetBits (unsigned char *pbDest, unsigned char *pbSamples, Double dSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_5_5 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_5_4 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_5_47 (unsigned char *pbDest, unsigned char *pbSamples, Double dSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_no_filter (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);Double Sum_d (Double *a, int a_size);int NDSPGetBits_21_2 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_var (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);BOOL FilterIsVar (FIRFilter *pFilter, int nSpacing, int nLeft, int nRight, int nExtra);int NDSPGetBits_var_5_2_2_0 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_var_3_11_9_0 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_var_3_11_9_2 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);int NDSPGetBits_var_2_11_9_2 (unsigned char *pbDest, unsigned char *pbSamples, int nSyncStart, double dDC, NDSPState *pState, int nFECType);void print_filter (FIRFilter *pFilt);void printarray_d1 (Double *arr, int n);void printarray_ed1 (Double *arr, int n);void printarray_d2 (Double *arr, int a_size, int b_size);void printarray_ed2 (Double *arr, int a_size, int b_size);void SubtractMean_d (Double *pfOutput, Double *pfInput, int nLen);void FillGCRSignals (void);void NormalizeSyncSignal (void);Double Mean_d (Double *a, int a_size);Double Mean_8 (unsigned char *a, int a_size);void Mult_d (Double *dest, Double *src, int size, Double factor);int Sum_16 (short *a, int a_size);int MatchWithEqualizeSignal (NDSPState *pState, unsigned char *pbSamples, EqualizeMatch *eqm, int *pnOffset, Double *pdMaxval, BOOL bNegativeOK);BOOL EqualizeVar (NDSPState *pState, Double *pfInput, int nMinInputIndex, int nMaxInputIndex, Double *pfDesiredOutput, int nDesiredOutputLength, int nOutputSpacing, FIRFilter *pFilter);int get_sync_samples(unsigned long newHZ);int get_gcr_samples(unsigned long newHZ);void onResample (double sample_rate, int syncLen, int gcrLen);void NDSPComputeNewSampleRate(unsigned long new_rate, unsigned long old_rate);void NDSPReset (void);
#ifdef __cplusplus
}#endif
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