1 /* 2 * Copyright 2019 The Android Open Source Project 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 * http://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 17 18 #include "LinearShape.h" 19 20 using namespace oboe::flowgraph; 21 LinearShape()22LinearShape::LinearShape() 23 : FlowGraphFilter(1) { 24 } 25 onProcess(int numFrames)26int32_t LinearShape::onProcess(int numFrames) { 27 float *inputs = input.getBuffer(); 28 float *outputs = output.getBuffer(); 29 30 for (int i = 0; i < numFrames; i++) { 31 float normalizedPhase = (inputs[i] * 0.5f) + 0.5f; // from 0.0 to 1.0 32 outputs[i] = mMinimum + (normalizedPhase * (mMaximum - mMinimum)); 33 } 34 35 return numFrames; 36 } 37