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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.
*/
package com.mobileer.oboetester;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.LinearLayout;
public class BufferSizeView extends LinearLayout {
private OboeAudioStream mStream;
private static final int FADER_THRESHOLD_MAX = 1000; // must match layout
private static final int USE_FADER = -1;
private static final int DEFAULT_NUM_BURSTS = 2;
private TextView mTextLabel;
private SeekBar mFader;
private ExponentialTaper mTaper;
private RadioGroup mBufferSizeGroup;
private RadioButton mBufferSizeRadio1;
private RadioButton mBufferSizeRadio2;
private RadioButton mBufferSizeRadio3;
private int mCachedCapacity;
private int mFramesPerBurst;
private int mNumBursts;
private SeekBar.OnSeekBarChangeListener mFaderListener = new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mNumBursts = USE_FADER;
updateRadioButtons();
setBufferSizeByPosition(progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
};
public BufferSizeView(Context context) {
super(context);
initializeViews(context);
}
public BufferSizeView(Context context, AttributeSet attrs) {
super(context, attrs);
initializeViews(context);
}
public BufferSizeView(Context context,
AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
initializeViews(context);
}
void setFaderNormalizedProgress(double fraction) {
mFader.setProgress((int) (fraction * FADER_THRESHOLD_MAX));
}
/**
* Inflates the views in the layout.
*
* @param context the current context for the view.
*/
private void initializeViews(Context context) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.buffer_size_view, this);
mTextLabel = (TextView) findViewById(R.id.textThreshold);
mFader = (SeekBar) findViewById(R.id.faderBufferSize);
mFader.setOnSeekBarChangeListener(mFaderListener);
mTaper = new ExponentialTaper(0.0, 1.0, 10.0);
mFader.setProgress(0);
mBufferSizeGroup = (RadioGroup) findViewById(R.id.bufferSizeGroup);
mBufferSizeRadio1 = (RadioButton) findViewById(R.id.bufferSize1);
mBufferSizeRadio1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onSizeRadioButtonClicked(view, 1);
}
});
mBufferSizeRadio2 = (RadioButton) findViewById(R.id.bufferSize2);
mBufferSizeRadio2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onSizeRadioButtonClicked(view, 2);
}
});
mBufferSizeRadio3 = (RadioButton) findViewById(R.id.bufferSize3);
mBufferSizeRadio3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onSizeRadioButtonClicked(view, 3);
}
});
mNumBursts = DEFAULT_NUM_BURSTS;
updateRadioButtons();
updateBufferSize();
}
public void updateRadioButtons() {
if (mNumBursts == USE_FADER && mBufferSizeGroup != null) {
// Clear all the radio buttons using the group.
// If you clear a checked button directly then it stops working.
mBufferSizeGroup.clearCheck();
} else if (mBufferSizeRadio3 != null) {
mBufferSizeRadio1.setChecked(mNumBursts == 1);
mBufferSizeRadio2.setChecked(mNumBursts == 2);
mBufferSizeRadio3.setChecked(mNumBursts == 3);
}
}
private void onSizeRadioButtonClicked(View view, int numBursts) {
boolean checked = ((RadioButton) view).isChecked();
if (!checked) return;
mNumBursts = numBursts;
setBufferSizeByNumBursts(numBursts);
}
// sets mStream, mCachedCapacity and mFramesPerBurst
public void onStreamOpened(OboeAudioStream stream) {
mStream = stream;
if (mStream != null) {
int capacity = mStream.getBufferCapacityInFrames();
if (capacity > 0) mCachedCapacity = capacity;
int framesPerBurst = mStream.getFramesPerBurst();
if (framesPerBurst > 0) mFramesPerBurst = framesPerBurst;
}
updateBufferSize();
}
private void setBufferSizeByNumBursts(int numBursts) {
int sizeFrames = -1;
if (mStream != null) {
int framesPerBurst = mStream.getFramesPerBurst();
if (framesPerBurst > 0) {
sizeFrames = numBursts * framesPerBurst;
}
}
StringBuffer message = new StringBuffer();
message.append("bufferSize = #" + numBursts);
setBufferSize(message, sizeFrames);
}
private void setBufferSizeByPosition(int progress) {
int sizeFrames = -1;
double normalizedThreshold = 0.0;
StringBuffer message = new StringBuffer();
normalizedThreshold = mTaper.linearToExponential(
((double) progress) / FADER_THRESHOLD_MAX);
if (normalizedThreshold < 0.0) normalizedThreshold = 0.0;
else if (normalizedThreshold > 1.0) normalizedThreshold = 1.0;
int percent = (int) (normalizedThreshold * 100);
message.append("bufferSize = " + percent + "%");
if (mCachedCapacity > 0) {
sizeFrames = (int) (normalizedThreshold * mCachedCapacity);
}
setBufferSize(message, sizeFrames);
}
private void setBufferSize(StringBuffer message, int sizeFrames) {
if (mStream != null) {
message.append(", " + sizeFrames);
if (mStream != null && sizeFrames >= 0) {
mStream.setBufferSizeInFrames(sizeFrames);
}
int bufferSize = mStream.getBufferSizeInFrames();
if (bufferSize >= 0) {
message.append(" / " + bufferSize);
}
message.append(" / " + mCachedCapacity);
}
mTextLabel.setText(message.toString());
}
private void updateBufferSize() {
if (mNumBursts == USE_FADER) {
int progress = mFader.getProgress();
setBufferSizeByPosition(progress);
} else {
setBufferSizeByNumBursts(mNumBursts);
}
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
mFader.setEnabled(enabled);
}
}
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