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