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119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _PLAYER_SIMPLEMULTIPLAYER_H_
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#define _PLAYER_SIMPLEMULTIPLAYER_H_
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#include <vector>
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#include <oboe/Oboe.h>
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#include "OneShotSampleSource.h"
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#include "SampleBuffer.h"
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namespace iolib {
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/**
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* A simple streaming player for multiple SampleBuffers.
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*/
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class SimpleMultiPlayer {
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public:
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SimpleMultiPlayer();
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void setupAudioStream(int32_t channelCount);
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void teardownAudioStream();
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bool openStream();
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bool startStream();
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int getSampleRate() { return mSampleRate; }
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// Wave Sample Loading...
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/**
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* Adds the SampleSource/SampleBuffer pair to the list of source channels.
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* Transfers ownership of those objects so that they can be deleted/unloaded.
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* The indexes associated with each source channel is the order in which they
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* are added.
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*/
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void addSampleSource(SampleSource* source, SampleBuffer* buffer);
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/**
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* Deallocates and deletes all added source/buffer (see addSampleSource()).
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*/
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void unloadSampleData();
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void triggerDown(int32_t index);
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void triggerUp(int32_t index);
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void resetAll();
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bool getOutputReset() { return mOutputReset; }
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void clearOutputReset() { mOutputReset = false; }
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void setPan(int index, float pan);
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float getPan(int index);
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void setGain(int index, float gain);
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float getGain(int index);
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void setLoopMode(int index, bool isLoopMode);
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private:
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class MyDataCallback : public oboe::AudioStreamDataCallback {
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public:
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MyDataCallback(SimpleMultiPlayer *parent) : mParent(parent) {}
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oboe::DataCallbackResult onAudioReady(
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oboe::AudioStream *audioStream,
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void *audioData,
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int32_t numFrames) override;
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private:
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SimpleMultiPlayer *mParent;
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};
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class MyErrorCallback : public oboe::AudioStreamErrorCallback {
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public:
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MyErrorCallback(SimpleMultiPlayer *parent) : mParent(parent) {}
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virtual ~MyErrorCallback() {
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}
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void onErrorAfterClose(oboe::AudioStream *oboeStream, oboe::Result error) override;
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private:
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SimpleMultiPlayer *mParent;
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};
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// Oboe Audio Stream
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std::shared_ptr<oboe::AudioStream> mAudioStream;
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// Playback Audio attributes
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int32_t mChannelCount;
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int32_t mSampleRate;
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// Sample Data
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int32_t mNumSampleBuffers;
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std::vector<SampleBuffer*> mSampleBuffers;
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std::vector<SampleSource*> mSampleSources;
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bool mOutputReset;
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std::shared_ptr<MyDataCallback> mDataCallback;
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std::shared_ptr<MyErrorCallback> mErrorCallback;
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};
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}
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#endif //_PLAYER_SIMPLEMULTIPLAYER_H_
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