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/*
This file is part of Subsonic.
Subsonic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Subsonic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2011 (C) Sindre Mehus
*/
package github.daneren2005.subphonic.activity;
import java.util.HashMap;
import java.util.Map;
import android.app.Activity;
import android.media.audiofx.Equalizer;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import github.daneren2005.subphonic.R;
import github.daneren2005.subphonic.audiofx.EqualizerController;
import github.daneren2005.subphonic.service.DownloadServiceImpl;
/**
* Equalizer controls.
*
* @author Sindre Mehus
* @version $Id$
*/
public class EqualizerActivity extends Activity {
private static final int MENU_GROUP_PRESET = 100;
private final Map<Short, SeekBar> bars = new HashMap<Short, SeekBar>();
private EqualizerController equalizerController;
private Equalizer equalizer;
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.equalizer);
equalizerController = DownloadServiceImpl.getInstance().getEqualizerController();
equalizer = equalizerController.getEqualizer();
initEqualizer();
final View presetButton = findViewById(R.id.equalizer_preset);
registerForContextMenu(presetButton);
presetButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
presetButton.showContextMenu();
}
});
CheckBox enabledCheckBox = (CheckBox) findViewById(R.id.equalizer_enabled);
enabledCheckBox.setChecked(equalizer.getEnabled());
enabledCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
setEqualizerEnabled(b);
}
});
}
@Override
protected void onPause() {
super.onPause();
equalizerController.saveSettings();
}
@Override
public void onCreateContextMenu(ContextMenu menu, View view, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, view, menuInfo);
short currentPreset;
try {
currentPreset = equalizer.getCurrentPreset();
} catch (Exception x) {
currentPreset = -1;
}
for (short preset = 0; preset < equalizer.getNumberOfPresets(); preset++) {
MenuItem menuItem = menu.add(MENU_GROUP_PRESET, preset, preset, equalizer.getPresetName(preset));
if (preset == currentPreset) {
menuItem.setChecked(true);
}
}
menu.setGroupCheckable(MENU_GROUP_PRESET, true, true);
}
@Override
public boolean onContextItemSelected(MenuItem menuItem) {
short preset = (short) menuItem.getItemId();
equalizer.usePreset(preset);
updateBars();
return true;
}
private void setEqualizerEnabled(boolean enabled) {
equalizer.setEnabled(enabled);
updateBars();
}
private void updateBars() {
for (Map.Entry<Short, SeekBar> entry : bars.entrySet()) {
short band = entry.getKey();
SeekBar bar = entry.getValue();
bar.setEnabled(equalizer.getEnabled());
short minEQLevel = equalizer.getBandLevelRange()[0];
bar.setProgress(equalizer.getBandLevel(band) - minEQLevel);
}
}
private void initEqualizer() {
LinearLayout layout = (LinearLayout) findViewById(R.id.equalizer_layout);
final short minEQLevel = equalizer.getBandLevelRange()[0];
final short maxEQLevel = equalizer.getBandLevelRange()[1];
for (short i = 0; i < equalizer.getNumberOfBands(); i++) {
final short band = i;
View bandBar = LayoutInflater.from(this).inflate(R.layout.equalizer_bar, null);
TextView freqTextView = (TextView) bandBar.findViewById(R.id.equalizer_frequency);
final TextView levelTextView = (TextView) bandBar.findViewById(R.id.equalizer_level);
SeekBar bar = (SeekBar) bandBar.findViewById(R.id.equalizer_bar);
freqTextView.setText((equalizer.getCenterFreq(band) / 1000) + " Hz");
bars.put(band, bar);
bar.setMax(maxEQLevel - minEQLevel);
short level = equalizer.getBandLevel(band);
bar.setProgress(level - minEQLevel);
bar.setEnabled(equalizer.getEnabled());
updateLevelText(levelTextView, level);
bar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
short level = (short) (progress + minEQLevel);
if (fromUser) {
equalizer.setBandLevel(band, level);
}
updateLevelText(levelTextView, level);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
layout.addView(bandBar);
}
}
private void updateLevelText(TextView levelTextView, short level) {
levelTextView.setText((level > 0 ? "+" : "") + level / 100 + " dB");
}
}
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