1 /* 2 * Copyright (C) 2020 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 _PLAYER_SAMPLEBUFFER_ 18 #define _PLAYER_SAMPLEBUFFER_ 19 20 #include <wav/WavStreamReader.h> 21 22 namespace iolib { 23 24 /* 25 * Defines the relevant properties of the audio data being sourced. 26 */ 27 struct AudioProperties { 28 int32_t channelCount; 29 int32_t sampleRate; 30 }; 31 32 class SampleBuffer { 33 public: SampleBuffer()34 SampleBuffer() : mNumSamples(0) {}; ~SampleBuffer()35 ~SampleBuffer() { unloadSampleData(); } 36 37 // Data load/unload 38 void loadSampleData(parselib::WavStreamReader* reader); 39 void unloadSampleData(); 40 41 void resampleData(int sampleRate); 42 getProperties()43 virtual AudioProperties getProperties() const { return mAudioProperties; } 44 getSampleData()45 float* getSampleData() { return mSampleData; } getNumSampleFrames()46 int32_t getNumSampleFrames() { return mNumSamples; } 47 48 protected: 49 AudioProperties mAudioProperties; 50 51 float* mSampleData; 52 int32_t mNumSamples; 53 }; 54 55 } 56 57 #endif //_PLAYER_SAMPLEBUFFER_ 58