1 /* 2 * Copyright 2018 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 #ifndef FLOWGRAPH_SOURCE_I32_H 18 #define FLOWGRAPH_SOURCE_I32_H 19 20 #include <stdint.h> 21 22 #include "AudioProcessorBase.h" 23 24 namespace flowgraph { 25 26 class SourceI32 : public AudioSource { 27 public: 28 explicit SourceI32(int32_t channelCount); 29 ~SourceI32() override = default; 30 31 int32_t onProcess(int64_t framePosition, int32_t numFrames) override; 32 33 private: 34 static constexpr float kScale = 1.0 / (1UL << 31); 35 }; 36 37 } /* namespace flowgraph */ 38 39 #endif //FLOWGRAPH_SOURCE_I32_H 40