-public:
- framecnt_t interpolate (int channel, framecnt_t nframes, Sample* input, Sample* output);
+ public:
+ CubicInterpolation ();
+ samplecnt_t interpolate (int channel, samplecnt_t input_samples, Sample* input, samplecnt_t & output_samples, Sample* output);
+ samplecnt_t distance (samplecnt_t nframes);
+ void reset ();
+
+ private:
+ Sample z[4];
+ char valid_z_bits;
+
+ bool is_valid (int n) const { return valid_z_bits & (1<<n); }
+ bool invalid (int n) const { return !is_valid (n); }
+ void validate (int n) { valid_z_bits |= (1<<n); }
+ void invalidate (int n) { valid_z_bits &= (1<<n); }