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/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _PLAYER_SIMIPLEMULTIPLAYER_H_
#define _PLAYER_SIMIPLEMULTIPLAYER_H_
#include <vector>
#include <oboe/Oboe.h>
#include "OneShotSampleSource.h"
#include "SampleBuffer.h"
namespace iolib {
typedef unsigned char byte; // an 8-bit unsigned value
/**
* A simple streaming player for multiple SampleBuffers.
*/
class SimpleMultiPlayer : public oboe::AudioStreamCallback {
public:
SimpleMultiPlayer();
// Inherited from oboe::AudioStreamCallback
oboe::DataCallbackResult onAudioReady(oboe::AudioStream *oboeStream, void *audioData,
int32_t numFrames) override;
virtual void onErrorAfterClose(oboe::AudioStream *oboeStream, oboe::Result error) override;
virtual void onErrorBeforeClose(oboe::AudioStream * oboeStream, oboe::Result error) override;
void setupAudioStream(int32_t channelCount);
void teardownAudioStream();
bool openStream();
bool startStream();
int getSampleRate() { return mSampleRate; }
// Wave Sample Loading...
/**
* Adds the SampleSource/Samplebuffer pair to the list of source channels.
* Transfers ownership of those objects so that they can be deleted/unloaded.
* The indexes associated with each source channel is the order in which they
* are added.
*/
void addSampleSource(SampleSource* source, SampleBuffer* buffer);
/**
* Deallocates and deletes all added source/buffer (see addSampleSource()).
*/
void unloadSampleData();
void triggerDown(int32_t index);
void triggerUp(int32_t index);
void resetAll();
bool getOutputReset() { return mOutputReset; }
void clearOutputReset() { mOutputReset = false; }
void setPan(int index, float pan);
float getPan(int index);
void setGain(int index, float gain);
float getGain(int index);
private:
// Oboe Audio Stream
std::shared_ptr<oboe::AudioStream> mAudioStream;
// Playback Audio attributes
int32_t mChannelCount;
int32_t mSampleRate;
// Sample Data
int32_t mNumSampleBuffers;
std::vector<SampleBuffer*> mSampleBuffers;
std::vector<SampleSource*> mSampleSources;
bool mOutputReset;
};
}
#endif //_PLAYER_SIMIPLEMULTIPLAYER_H_
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