/*
* Copyright (C) 2010-2011 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.android.musicfx;
import com.android.audiofx.OpenSLESConstants;
import com.android.musicfx.seekbar.SeekBar;
import com.android.musicfx.seekbar.SeekBar.OnSeekBarChangeListener;
import android.app.ActionBar;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioManager;
import android.media.audiofx.AudioEffect;
import android.media.audiofx.AudioEffect.Descriptor;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.Spinner;
import android.widget.Switch;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Formatter;
import java.util.Locale;
/**
*
*/
public class ActivityMusic extends Activity implements OnSeekBarChangeListener {
private final static String TAG = "MusicFXActivityMusic";
/**
* Max number of EQ bands supported
*/
private final static int EQUALIZER_MAX_BANDS = 32;
/**
* Indicates if Virtualizer effect is supported.
*/
private boolean mVirtualizerSupported;
/**
* Indicates if BassBoost effect is supported.
*/
private boolean mBassBoostSupported;
/**
* Indicates if Equalizer effect is supported.
*/
private boolean mEqualizerSupported;
/**
* Indicates if Preset Reverb effect is supported.
*/
private boolean mPresetReverbSupported;
// Equalizer fields
private final SeekBar[] mEqualizerSeekBar = new SeekBar[EQUALIZER_MAX_BANDS];
private int mNumberEqualizerBands;
private int mEqualizerMinBandLevel;
private int mEQPresetUserPos = 1;
private int mEQPreset;
private int mEQPresetPrevious;
private int[] mEQPresetUserBandLevelsPrev;
private String[] mEQPresetNames;
private int mPRPreset;
private int mPRPresetPrevious;
private boolean mIsHeadsetOn = false;
private CompoundButton mToggleSwitch;
private StringBuilder mFormatBuilder = new StringBuilder();
private Formatter mFormatter = new Formatter(mFormatBuilder, Locale.getDefault());
/**
* Mapping for the EQ widget ids per band
*/
private static final int[][] EQViewElementIds = {
{ R.id.EQBand0TextView, R.id.EQBand0SeekBar },
{ R.id.EQBand1TextView, R.id.EQBand1SeekBar },
{ R.id.EQBand2TextView, R.id.EQBand2SeekBar },
{ R.id.EQBand3TextView, R.id.EQBand3SeekBar },
{ R.id.EQBand4TextView, R.id.EQBand4SeekBar },
{ R.id.EQBand5TextView, R.id.EQBand5SeekBar },
{ R.id.EQBand6TextView, R.id.EQBand6SeekBar },
{ R.id.EQBand7TextView, R.id.EQBand7SeekBar },
{ R.id.EQBand8TextView, R.id.EQBand8SeekBar },
{ R.id.EQBand9TextView, R.id.EQBand9SeekBar },
{ R.id.EQBand10TextView, R.id.EQBand10SeekBar },
{ R.id.EQBand11TextView, R.id.EQBand11SeekBar },
{ R.id.EQBand12TextView, R.id.EQBand12SeekBar },
{ R.id.EQBand13TextView, R.id.EQBand13SeekBar },
{ R.id.EQBand14TextView, R.id.EQBand14SeekBar },
{ R.id.EQBand15TextView, R.id.EQBand15SeekBar },
{ R.id.EQBand16TextView, R.id.EQBand16SeekBar },
{ R.id.EQBand17TextView, R.id.EQBand17SeekBar },
{ R.id.EQBand18TextView, R.id.EQBand18SeekBar },
{ R.id.EQBand19TextView, R.id.EQBand19SeekBar },
{ R.id.EQBand20TextView, R.id.EQBand20SeekBar },
{ R.id.EQBand21TextView, R.id.EQBand21SeekBar },
{ R.id.EQBand22TextView, R.id.EQBand22SeekBar },
{ R.id.EQBand23TextView, R.id.EQBand23SeekBar },
{ R.id.EQBand24TextView, R.id.EQBand24SeekBar },
{ R.id.EQBand25TextView, R.id.EQBand25SeekBar },
{ R.id.EQBand26TextView, R.id.EQBand26SeekBar },
{ R.id.EQBand27TextView, R.id.EQBand27SeekBar },
{ R.id.EQBand28TextView, R.id.EQBand28SeekBar },
{ R.id.EQBand29TextView, R.id.EQBand29SeekBar },
{ R.id.EQBand30TextView, R.id.EQBand30SeekBar },
{ R.id.EQBand31TextView, R.id.EQBand31SeekBar } };
// Preset Reverb fields
/**
* Array containing the PR preset names.
*/
private static final String[] PRESETREVERBPRESETSTRINGS = { "None", "SmallRoom", "MediumRoom",
"LargeRoom", "MediumHall", "LargeHall", "Plate" };
/**
* Context field
*/
private Context mContext;
/**
* Calling package name field
*/
private String mCallingPackageName = "empty";
/**
* Audio session field
*/
private int mAudioSession = AudioEffect.ERROR_BAD_VALUE;
// Broadcast receiver to handle wired and Bluetooth A2dp headset events
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(final Context context, final Intent intent) {
final String action = intent.getAction();
final boolean isHeadsetOnPrev = mIsHeadsetOn;
final AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
mIsHeadsetOn = (intent.getIntExtra("state", 0) == 1)
|| audioManager.isBluetoothA2dpOn();
} else if (action.equals(BluetoothDevice.ACTION_ACL_CONNECTED)) {
final int deviceClass = ((BluetoothDevice) intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)).getBluetoothClass()
.getDeviceClass();
if ((deviceClass == BluetoothClass.Device.AUDIO_VIDEO_HEADPHONES)
|| (deviceClass == BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET)) {
mIsHeadsetOn = true;
}
} else if (action.equals(AudioManager.ACTION_AUDIO_BECOMING_NOISY)) {
mIsHeadsetOn = audioManager.isBluetoothA2dpOn() || audioManager.isWiredHeadsetOn();
} else if (action.equals(BluetoothDevice.ACTION_ACL_DISCONNECTED)) {
final int deviceClass = ((BluetoothDevice) intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)).getBluetoothClass()
.getDeviceClass();
if ((deviceClass == BluetoothClass.Device.AUDIO_VIDEO_HEADPHONES)
|| (deviceClass == BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET)) {
mIsHeadsetOn = audioManager.isWiredHeadsetOn();
}
}
if (isHeadsetOnPrev != mIsHeadsetOn) {
updateUIHeadset();
}
}
};
/*
* Declares and initializes all objects and widgets in the layouts and the CheckBox and SeekBar
* onchange methods on creation.
*
* (non-Javadoc)
*
* @see android.app.ActivityGroup#onCreate(android.os.Bundle)
*/
@Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Init context to be used in listeners
mContext = this;
// Receive intent
// get calling intent
final Intent intent = getIntent();
mAudioSession = intent.getIntExtra(AudioEffect.EXTRA_AUDIO_SESSION,
AudioEffect.ERROR_BAD_VALUE);
Log.v(TAG, "audio session: " + mAudioSession);
mCallingPackageName = getCallingPackage();
// check for errors
if (mCallingPackageName == null) {
Log.e(TAG, "Package name is null");
setResult(RESULT_CANCELED);
finish();
return;
}
setResult(RESULT_OK);
Log.v(TAG, mCallingPackageName + " (" + mAudioSession + ")");
ControlPanelEffect.initEffectsPreferences(mContext, mCallingPackageName, mAudioSession);
// query available effects
final Descriptor[] effects = AudioEffect.queryEffects();
// Determine available/supported effects
Log.v(TAG, "Available effects:");
for (final Descriptor effect : effects) {
Log.v(TAG, effect.name.toString() + ", type: " + effect.type.toString());
if (effect.type.equals(AudioEffect.EFFECT_TYPE_VIRTUALIZER)) {
mVirtualizerSupported = true;
} else if (effect.type.equals(AudioEffect.EFFECT_TYPE_BASS_BOOST)) {
mBassBoostSupported = true;
} else if (effect.type.equals(AudioEffect.EFFECT_TYPE_EQUALIZER)) {
mEqualizerSupported = true;
} else if (effect.type.equals(AudioEffect.EFFECT_TYPE_PRESET_REVERB)) {
mPresetReverbSupported = true;
}
}
setContentView(R.layout.music_main);
final ViewGroup viewGroup = (ViewGroup) findViewById(R.id.contentSoundEffects);
// Fill array with presets from AudioEffects call.
// allocate a space for 2 extra strings (CI Extreme & User)
final int numPresets = ControlPanelEffect.getParameterInt(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.eq_num_presets);
mEQPresetNames = new String[numPresets + 2];
for (short i = 0; i < numPresets; i++) {
mEQPresetNames[i] = ControlPanelEffect.getParameterString(mContext,
mCallingPackageName, mAudioSession, ControlPanelEffect.Key.eq_preset_name, i);
}
mEQPresetNames[numPresets] = getString(R.string.ci_extreme);
mEQPresetNames[numPresets + 1] = getString(R.string.user);
mEQPresetUserPos = numPresets + 1;
// Watch for button clicks and initialization.
if ((mVirtualizerSupported) || (mBassBoostSupported) || (mEqualizerSupported)
|| (mPresetReverbSupported)) {
// Set the listener for the main enhancements toggle button.
// Depending on the state enable the supported effects if they were
// checked in the setup tab.
mToggleSwitch = new Switch(this);
mToggleSwitch.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(final CompoundButton buttonView,
final boolean isChecked) {
// set parameter and state
ControlPanelEffect.setParameterBoolean(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.global_enabled, isChecked);
// Enable Linear layout (in scroll layout) view with all
// effect contents depending on checked state
setEnabledAllChildren(viewGroup, isChecked);
// update UI according to headset state
updateUIHeadset();
}
});
// Initialize the Virtualizer elements.
// Set the SeekBar listener.
if (mVirtualizerSupported) {
// Show msg when disabled slider (layout) is touched
findViewById(R.id.vILayout).setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(final View v, final MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
showHeadsetMsg();
}
return false;
}
});
final SeekBar seekbar = (SeekBar) findViewById(R.id.vIStrengthSeekBar);
seekbar.setMax(OpenSLESConstants.VIRTUALIZER_MAX_STRENGTH
- OpenSLESConstants.VIRTUALIZER_MIN_STRENGTH);
seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
// Update the parameters while SeekBar changes and set the
// effect parameter.
@Override
public void onProgressChanged(final SeekBar seekBar, final int progress,
final boolean fromUser) {
// set parameter and state
ControlPanelEffect.setParameterInt(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.virt_strength, progress);
}
// If slider pos was 0 when starting re-enable effect
@Override
public void onStartTrackingTouch(final SeekBar seekBar) {
if (seekBar.getProgress() == 0) {
ControlPanelEffect.setParameterBoolean(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.virt_enabled, true);
}
}
// If slider pos = 0 when stopping disable effect
@Override
public void onStopTrackingTouch(final SeekBar seekBar) {
if (seekBar.getProgress() == 0) {
// disable
ControlPanelEffect.setParameterBoolean(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.virt_enabled, false);
}
}
});
}
// Initialize the Bass Boost elements.
// Set the SeekBar listener.
if (mBassBoostSupported) {
// Show msg when disabled slider (layout) is touched
findViewById(R.id.bBLayout).setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(final View v, final MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
showHeadsetMsg();
}
return false;
}
});
final SeekBar seekbar = (SeekBar) findViewById(R.id.bBStrengthSeekBar);
seekbar.setMax(OpenSLESConstants.BASSBOOST_MAX_STRENGTH
- OpenSLESConstants.BASSBOOST_MIN_STRENGTH);
seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
// Update the parameters while SeekBar changes and set the
// effect parameter.
@Override
public void onProgressChanged(final SeekBar seekBar, final int progress,
final boolean fromUser) {
// set parameter and state
ControlPanelEffect.setParameterInt(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.bb_strength, progress);
}
// If slider pos was 0 when starting re-enable effect
@Override
public void onStartTrackingTouch(final SeekBar seekBar) {
if (seekBar.getProgress() == 0) {
ControlPanelEffect.setParameterBoolean(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.bb_enabled, true);
}
}
// If slider pos = 0 when stopping disable effect
@Override
public void onStopTrackingTouch(final SeekBar seekBar) {
if (seekBar.getProgress() == 0) {
// disable
ControlPanelEffect.setParameterBoolean(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.bb_enabled, false);
}
}
});
}
// Initialize the Equalizer elements.
if (mEqualizerSupported) {
mEQPreset = ControlPanelEffect.getParameterInt(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.eq_current_preset);
if (mEQPreset >= mEQPresetNames.length) {
mEQPreset = 0;
}
mEQPresetPrevious = mEQPreset;
equalizerSpinnerInit((Spinner)findViewById(R.id.eqSpinner));
equalizerBandsInit(findViewById(R.id.eqcontainer));
}
// Initialize the Preset Reverb elements.
// Set Spinner listeners.
if (mPresetReverbSupported) {
mPRPreset = ControlPanelEffect.getParameterInt(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.pr_current_preset);
mPRPresetPrevious = mPRPreset;
reverbSpinnerInit((Spinner)findViewById(R.id.prSpinner));
}
} else {
viewGroup.setVisibility(View.GONE);
((TextView) findViewById(R.id.noEffectsTextView)).setVisibility(View.VISIBLE);
}
ActionBar ab = getActionBar();
final int padding = getResources().getDimensionPixelSize(
R.dimen.action_bar_switch_padding);
mToggleSwitch.setPadding(0,0, padding, 0);
ab.setCustomView(mToggleSwitch, new ActionBar.LayoutParams(
ActionBar.LayoutParams.WRAP_CONTENT,
ActionBar.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_VERTICAL | Gravity.RIGHT));
ab.setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE | ActionBar.DISPLAY_SHOW_CUSTOM);
}
/*
* (non-Javadoc)
*
* @see android.app.Activity#onResume()
*/
@Override
protected void onResume() {
super.onResume();
if ((mVirtualizerSupported) || (mBassBoostSupported) || (mEqualizerSupported)
|| (mPresetReverbSupported)) {
// Listen for broadcast intents that might affect the onscreen UI for headset.
final IntentFilter intentFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
intentFilter.addAction(AudioManager.ACTION_AUDIO_BECOMING_NOISY);
registerReceiver(mReceiver, intentFilter);
// Check if wired or Bluetooth headset is connected/on
final AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
mIsHeadsetOn = (audioManager.isWiredHeadsetOn() || audioManager.isBluetoothA2dpOn());
Log.v(TAG, "onResume: mIsHeadsetOn : " + mIsHeadsetOn);
// Update UI
updateUI();
}
}
/*
* (non-Javadoc)
*
* @see android.app.Activity#onPause()
*/
@Override
protected void onPause() {
super.onPause();
// Unregister for broadcast intents. (These affect the visible UI,
// so we only care about them while we're in the foreground.)
unregisterReceiver(mReceiver);
}
private void reverbSpinnerInit(Spinner spinner) {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, PRESETREVERBPRESETSTRINGS);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if (position != mPRPresetPrevious) {
presetReverbSetPreset(position);
}
mPRPresetPrevious = position;
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
spinner.setSelection(mPRPreset);
}
private void equalizerSpinnerInit(Spinner spinner) {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, mEQPresetNames);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if (position != mEQPresetPrevious) {
equalizerSetPreset(position);
}
mEQPresetPrevious = position;
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
spinner.setSelection(mEQPreset);
}
/**
* En/disables all children for a given view. For linear and relative layout children do this
* recursively
*
* @param viewGroup
* @param enabled
*/
private void setEnabledAllChildren(final ViewGroup viewGroup, final boolean enabled) {
final int count = viewGroup.getChildCount();
for (int i = 0; i < count; i++) {
final View view = viewGroup.getChildAt(i);
if ((view instanceof LinearLayout) || (view instanceof RelativeLayout)) {
final ViewGroup vg = (ViewGroup) view;
setEnabledAllChildren(vg, enabled);
}
view.setEnabled(enabled);
}
}
/**
* Updates UI (checkbox, seekbars, enabled states) according to the current stored preferences.
*/
private void updateUI() {
final boolean isEnabled = ControlPanelEffect.getParameterBoolean(mContext,
mCallingPackageName, mAudioSession, ControlPanelEffect.Key.global_enabled);
mToggleSwitch.setChecked(isEnabled);
setEnabledAllChildren((ViewGroup) findViewById(R.id.contentSoundEffects), isEnabled);
updateUIHeadset();
if (mVirtualizerSupported) {
((SeekBar) findViewById(R.id.vIStrengthSeekBar)).setProgress(ControlPanelEffect
.getParameterInt(mContext, mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.virt_strength));
}
if (mBassBoostSupported) {
((SeekBar) findViewById(R.id.bBStrengthSeekBar)).setProgress(ControlPanelEffect
.getParameterInt(mContext, mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.bb_strength));
}
if (mEqualizerSupported) {
equalizerUpdateDisplay();
}
if (mPresetReverbSupported) {
int reverb = ControlPanelEffect.getParameterInt(
mContext, mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.pr_current_preset);
((Spinner)findViewById(R.id.prSpinner)).setSelection(reverb);
}
}
/**
* Updates UI for headset mode. En/disable VI and BB controls depending on headset state
* (on/off) if effects are on. Do the inverse for their layouts so they can take over
* control/events.
*/
private void updateUIHeadset() {
if (mToggleSwitch.isChecked()) {
((TextView) findViewById(R.id.vIStrengthText)).setEnabled(mIsHeadsetOn);
((SeekBar) findViewById(R.id.vIStrengthSeekBar)).setEnabled(mIsHeadsetOn);
findViewById(R.id.vILayout).setEnabled(!mIsHeadsetOn);
((TextView) findViewById(R.id.bBStrengthText)).setEnabled(mIsHeadsetOn);
((SeekBar) findViewById(R.id.bBStrengthSeekBar)).setEnabled(mIsHeadsetOn);
findViewById(R.id.bBLayout).setEnabled(!mIsHeadsetOn);
}
}
/**
* Initializes the equalizer elements. Set the SeekBars and Spinner listeners.
*/
private void equalizerBandsInit(View eqcontainer) {
// Initialize the N-Band Equalizer elements.
mNumberEqualizerBands = ControlPanelEffect.getParameterInt(mContext, mCallingPackageName,
mAudioSession, ControlPanelEffect.Key.eq_num_bands);
mEQPresetUserBandLevelsPrev = ControlPanelEffect.getParameterIntArray(mContext,
mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.eq_preset_user_band_level);
final int[] centerFreqs = ControlPanelEffect.getParameterIntArray(mContext,
mCallingPackageName, mAudioSession, ControlPanelEffect.Key.eq_center_freq);
final int[] bandLevelRange = ControlPanelEffect.getParameterIntArray(mContext,
mCallingPackageName, mAudioSession, ControlPanelEffect.Key.eq_level_range);
mEqualizerMinBandLevel = bandLevelRange[0];
final int mEqualizerMaxBandLevel = bandLevelRange[1];
for (int band = 0; band < mNumberEqualizerBands; band++) {
// Unit conversion from mHz to Hz and use k prefix if necessary to display
final int centerFreq = centerFreqs[band] / 1000;
float centerFreqHz = centerFreq;
String unitPrefix = "";
if (centerFreqHz >= 1000) {
centerFreqHz = centerFreqHz / 1000;
unitPrefix = "k";
}
((TextView) eqcontainer.findViewById(EQViewElementIds[band][0])).setText(
format("%.0f ", centerFreqHz) + unitPrefix + "Hz");
mEqualizerSeekBar[band] = (SeekBar) eqcontainer
.findViewById(EQViewElementIds[band][1]);
mEqualizerSeekBar[band].setMax(mEqualizerMaxBandLevel - mEqualizerMinBandLevel);
mEqualizerSeekBar[band].setOnSeekBarChangeListener(this);
}
// Hide the inactive Equalizer bands.
for (int band = mNumberEqualizerBands; band < EQUALIZER_MAX_BANDS; band++) {
// CenterFreq text
eqcontainer.findViewById(EQViewElementIds[band][0]).setVisibility(View.GONE);
// SeekBar
eqcontainer.findViewById(EQViewElementIds[band][1]).setVisibility(View.GONE);
}
// TODO: get the actual values from somewhere
TextView tv = (TextView) findViewById(R.id.maxLevelText);
tv.setText("+15 dB");
tv = (TextView) findViewById(R.id.centerLevelText);
tv.setText("0 dB");
tv = (TextView) findViewById(R.id.minLevelText);
tv.setText("-15 dB");
equalizerUpdateDisplay();
}
private String format(String format, Object... args) {
mFormatBuilder.setLength(0);
mFormatter.format(format, args);
return mFormatBuilder.toString();
}
/*
* For the EQ Band SeekBars
*
* (non-Javadoc)
*
* @see android.widget.SeekBar.OnSeekBarChangeListener#onProgressChanged(android
* .widget.SeekBar, int, boolean)
*/
@Override
public void onProgressChanged(final SeekBar seekbar, final int progress, final boolean fromUser) {
final int id = seekbar.getId();
for (short band = 0; band < mNumberEqualizerBands; band++) {
if (id == EQViewElementIds[band][1]) {
final short level = (short) (progress + mEqualizerMinBandLevel);
if (fromUser) {
equalizerBandUpdate(band, level);
}
break;
}
}
}
/*
* (non-Javadoc)
*
* @see android.widget.SeekBar.OnSeekBarChangeListener#onStartTrackingTouch(android
* .widget.SeekBar)
*/
@Override
public void onStartTrackingTouch(final SeekBar seekbar) {
// get current levels
final int[] bandLevels = ControlPanelEffect.getParameterIntArray(mContext,
mCallingPackageName, mAudioSession, ControlPanelEffect.Key.eq_band_level);
// copy current levels to user preset
for (short band = 0; band < mNumberEqualizerBands; band++) {
equalizerBandUpdate(band, bandLevels[band]);
}
equalizerSetPreset(mEQPresetUserPos);
((Spinner)findViewById(R.id.eqSpinner)).setSelection(mEQPresetUserPos);
}
/*
* Updates the EQ display when the user stops changing.
*
* (non-Javadoc)
*
* @see android.widget.SeekBar.OnSeekBarChangeListener#onStopTrackingTouch(android
* .widget.SeekBar)
*/
@Override
public void onStopTrackingTouch(final SeekBar seekbar) {
equalizerUpdateDisplay();
}
/**
* Updates the EQ by getting the parameters.
*/
private void equalizerUpdateDisplay() {
// Update and show the active N-Band Equalizer bands.
final int[] bandLevels = ControlPanelEffect.getParameterIntArray(mContext,
mCallingPackageName, mAudioSession, ControlPanelEffect.Key.eq_band_level);
for (short band = 0; band < mNumberEqualizerBands; band++) {
final int level = bandLevels[band];
final int progress = level - mEqualizerMinBandLevel;
mEqualizerSeekBar[band].setProgress(progress);
}
}
/**
* Updates/sets a given EQ band level.
*
* @param band
* Band id
* @param level
* EQ band level
*/
private void equalizerBandUpdate(final int band, final int level) {
ControlPanelEffect.setParameterInt(mContext, mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.eq_band_level, level, band);
}
/**
* Sets the given EQ preset.
*
* @param preset
* EQ preset id.
*/
private void equalizerSetPreset(final int preset) {
ControlPanelEffect.setParameterInt(mContext, mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.eq_current_preset, preset);
equalizerUpdateDisplay();
}
/**
* Sets the given PR preset.
*
* @param preset
* PR preset id.
*/
private void presetReverbSetPreset(final int preset) {
ControlPanelEffect.setParameterInt(mContext, mCallingPackageName, mAudioSession,
ControlPanelEffect.Key.pr_current_preset, preset);
}
/**
* Show msg that headset needs to be plugged.
*/
private void showHeadsetMsg() {
final Context context = getApplicationContext();
final int duration = Toast.LENGTH_SHORT;
final Toast toast = Toast.makeText(context, getString(R.string.headset_plug), duration);
toast.setGravity(Gravity.CENTER, toast.getXOffset() / 2, toast.getYOffset() / 2);
toast.show();
}
}