diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2017-10-02 12:42:44 -0400 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2017-10-02 12:44:52 -0400 |
commit | 45b1f6f6b8de94c90f0fb93a18062d02fdb62ca9 (patch) | |
tree | 12277aabba0f484b99dab150c7cd276430e5526a /libs/ardour/ardour/interpolation.h | |
parent | 4b9bf57b39f79f82db1e2311e9cd401deedc35ce (diff) |
change API and implementation for CubicInterpolation and Interpolation.
Also remove LinearInterpolation which is not used
Diffstat (limited to 'libs/ardour/ardour/interpolation.h')
-rw-r--r-- | libs/ardour/ardour/interpolation.h | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/libs/ardour/ardour/interpolation.h b/libs/ardour/ardour/interpolation.h index 4b6a66d54b..488a5fe5b4 100644 --- a/libs/ardour/ardour/interpolation.h +++ b/libs/ardour/ardour/interpolation.h @@ -40,7 +40,7 @@ protected: public: Interpolation () { _speed = 1.0; _target_speed = 1.0; } - ~Interpolation () { phase.clear(); } + virtual ~Interpolation() {} void set_speed (double new_speed) { _speed = new_speed; _target_speed = new_speed; } void set_target_speed (double new_speed) { _target_speed = new_speed; } @@ -48,31 +48,31 @@ public: double target_speed() const { return _target_speed; } double speed() const { return _speed; } - void add_channel_to (int /*input_buffer_size*/, int /*output_buffer_size*/) { phase.push_back (0.0); } - void remove_channel_from () { phase.pop_back (); } + void add_channel () { phase.push_back (0.0); } + void remove_channel () { phase.pop_back (); } - void reset () { + virtual void reset () { for (size_t i = 0; i < phase.size(); i++) { phase[i] = 0.0; } } }; -class LIBARDOUR_API LinearInterpolation : public Interpolation { -public: - samplecnt_t interpolate (int channel, samplecnt_t nframes, Sample* input, Sample* output); -}; - class LIBARDOUR_API CubicInterpolation : public Interpolation { -public: - samplecnt_t interpolate (int channel, samplecnt_t nframes, Sample* input, Sample* output); -}; - -class BufferSet; - -class LIBARDOUR_API CubicMidiInterpolation : public Interpolation { -public: - samplecnt_t distance (samplecnt_t nframes, bool roll = true); + 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); } }; } // namespace ARDOUR |