Revision d42dc217 libavcodec/iirfilter.h

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libavcodec/iirfilter.h
49 49 
/**
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 * Initialize filter coefficients.
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 *
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 * @param avc          a pointer to an arbitrary struct of which the first
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 *                     field is a pointer to an AVClass struct
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 * @param filt_type    filter type (e.g. Butterworth)
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 * @param filt_mode    filter mode (e.g. lowpass)
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 * @param order        filter order
......
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 *
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 * @return pointer to filter coefficients structure or NULL if filter cannot be created
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 */
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struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(enum IIRFilterType filt_type,
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struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(void *avc,
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                                                enum IIRFilterType filt_type,
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                                                    enum IIRFilterMode filt_mode,
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                                                    int order, float cutoff_ratio,
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                                                    float stopband, float ripple);

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