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BaseVisualizer.java
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BaseVisualizer.java
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/*
* Copyright (C) 2017 Gautam Chibde
*
* 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.
*/
package com.chibde;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Paint;
import android.media.MediaPlayer;
import android.media.audiofx.Visualizer;
import androidx.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;
/**
* Base class that contains common implementation for all
* visualizers.
* Created by gautam chibde on 28/10/17.
*/
abstract public class BaseVisualizer extends View {
protected byte[] bytes;
protected Paint paint;
protected Visualizer visualizer;
protected int color = Color.BLUE;
public BaseVisualizer(Context context) {
super(context);
init(null);
init();
}
public BaseVisualizer(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
init(attrs);
init();
}
public BaseVisualizer(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(attrs);
init();
}
private void init(AttributeSet attributeSet) {
paint = new Paint();
}
/**
* Set color to visualizer with color resource id.
*
* @param color color resource id.
*/
public void setColor(int color) {
this.color = color;
this.paint.setColor(this.color);
}
/**
* @deprecated will be removed in next version use {@link BaseVisualizer#setPlayer(int)} instead
* @param mediaPlayer MediaPlayer
*/
@Deprecated
public void setPlayer(MediaPlayer mediaPlayer) {
setPlayer(mediaPlayer.getAudioSessionId());
}
public void setPlayer(int audioSessionId) {
visualizer = new Visualizer(audioSessionId);
visualizer.setCaptureSize(Visualizer.getCaptureSizeRange()[1]);
visualizer.setDataCaptureListener(new Visualizer.OnDataCaptureListener() {
@Override
public void onWaveFormDataCapture(Visualizer visualizer, byte[] bytes,
int samplingRate) {
BaseVisualizer.this.bytes = bytes;
invalidate();
}
@Override
public void onFftDataCapture(Visualizer visualizer, byte[] bytes,
int samplingRate) {
}
}, Visualizer.getMaxCaptureRate() / 2, true, false);
visualizer.setEnabled(true);
}
public void release() {
visualizer.release();
}
public Visualizer getVisualizer() {
return visualizer;
}
protected abstract void init();
}