enum IIRFilterType{
FF_FILTER_TYPE_BESSEL,
+ FF_FILTER_TYPE_BIQUAD,
FF_FILTER_TYPE_BUTTERWORTH,
FF_FILTER_TYPE_CHEBYSHEV,
FF_FILTER_TYPE_ELLIPTIC,
/**
* Initialize filter coefficients.
*
+ * @param avc a pointer to an arbitrary struct of which the first
+ * field is a pointer to an AVClass struct
* @param filt_type filter type (e.g. Butterworth)
* @param filt_mode filter mode (e.g. lowpass)
* @param order filter order
*
* @return pointer to filter coefficients structure or NULL if filter cannot be created
*/
-struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(enum IIRFilterType filt_type,
- enum IIRFilterMode filt_mode,
- int order, float cutoff_ratio,
- float stopband, float ripple);
+struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(void *avc,
+ enum IIRFilterType filt_type,
+ enum IIRFilterMode filt_mode,
+ int order, float cutoff_ratio,
+ float stopband, float ripple);
/**
* Create new filter state.
*/
void ff_iir_filter_flt(const struct FFIIRFilterCoeffs *coeffs,
struct FFIIRFilterState *state, int size,
- const float *src, int sstep, void *dst, int dstep);
+ const float *src, int sstep, float *dst, int dstep);
#endif /* AVCODEC_IIRFILTER_H */