1 /* 2 * Copyright 2019 Google LLC 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef ANDROID_FXLAB_FIRDESCRIPTION_H 17 #define ANDROID_FXLAB_FIRDESCRIPTION_H 18 19 #include "EffectDescription.h" 20 #include "../CombFilter.h" 21 namespace Effect { 22 class FIRDescription: public EffectDescription<FIRDescription, 2> { 23 public: getName()24 static constexpr std::string_view getName() { 25 return std::string_view("FIR"); 26 } 27 getCategory()28 static constexpr std::string_view getCategory() { 29 return std::string_view("Comb"); 30 } 31 getParams()32 static constexpr std::array<ParamType, getNumParams()> getParams() { 33 return std::array<ParamType, getNumParams()> { 34 ParamType("Delay (samples)", 1, 500, 10), 35 ParamType("Gain", 0, 0.99, 0.5), 36 }; 37 } 38 template<class iter_type> buildEffect(std::array<float,getNumParams ()> paramArr)39 static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) { 40 return _ef<iter_type> { 41 CombFilter<iter_type>{1, paramArr[1], 0, static_cast<int>(paramArr[0])} 42 }; 43 } 44 }; 45 } //namespace Effect 46 #endif //ANDROID_FXLAB_FIRDESCRIPTION_H 47