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Filesstreams
..
bootloader
drivers
hardware_design
resources
__init__.py
audio_cv_meter.h
compressor.cc
compressor.h
cv_scaler.cc
cv_scaler.h
envelope.cc
envelope.h
filter_controller.h
follower.cc
follower.h
gain.h
lorenz_generator.cc
lorenz_generator.h
makefile
meta_parameters.h
processor.cc
processor.h
resources.cc
resources.h
streams.cc
svf.cc
svf.h
ui.cc
ui.h
vactrol.cc
vactrol.h
filter_controller.h
// Copyright 2014 Olivier Gillet. // // Author: Olivier Gillet (ol.gillet@gmail.com) // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. // // See http://creativecommons.org/licenses/MIT/ for more information. // // ----------------------------------------------------------------------------- // // Plain filter. #ifndef STREAMS_FILTER_CONTROLLER_H_ #define STREAMS_FILTER_CONTROLLER_H_ #include "stmlib/stmlib.h" namespace streams { class FilterController { public: FilterController() { } ~FilterController() { } void Init() { frequency_offset_ = 0; frequency_amount_ = 0; } void Process( int16_t audio, int16_t excite, uint16_t* gain, uint16_t* frequency) { // Smooth frequency amount parameters. frequency_amount_ += (target_frequency_amount_ - frequency_amount_) >> 8; frequency_offset_ += (target_frequency_offset_ - frequency_offset_) >> 8; int32_t f; f = frequency_offset_ + (excite * frequency_amount_ >> 14); if (f < 0) { f = 0; } else if (f > 65535) { f = 65535; } *gain = 0; *frequency = f; } void Configure(bool alternate, int32_t* parameters, int32_t* globals) { int32_t amount = parameters[1]; amount -= 32768; amount = amount * amount >> 15; target_frequency_amount_ = parameters[1] < 32768 ? -amount : amount; target_frequency_offset_ = parameters[0]; } private: int32_t target_frequency_amount_; int32_t target_frequency_offset_; int32_t frequency_amount_; int32_t frequency_offset_; DISALLOW_COPY_AND_ASSIGN(FilterController); }; } // namespace streams #endif // STREAMS_ENVELOPE_H_
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