/* * 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; import java.util.UUID; /** * */ 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; private boolean mVirtualizerIsHeadphoneOnly; /** * 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; if (effect.uuid.equals(UUID.fromString("1d4033c0-8557-11df-9f2d-0002a5d5c51b"))) { mVirtualizerIsHeadphoneOnly = 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); } } }); final Switch sw = (Switch) findViewById(R.id.vIStrengthToggle); sw.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(final CompoundButton buttonView, final boolean isChecked) { ControlPanelEffect.setParameterBoolean(mContext, mCallingPackageName, mAudioSession, ControlPanelEffect.Key.virt_enabled, isChecked); } }); } // 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 adapter = new ArrayAdapter(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 adapter = new ArrayAdapter(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 bar = (SeekBar) findViewById(R.id.vIStrengthSeekBar); Switch sw = (Switch) findViewById(R.id.vIStrengthToggle); int strength = ControlPanelEffect .getParameterInt(mContext, mCallingPackageName, mAudioSession, ControlPanelEffect.Key.virt_strength); bar.setProgress(strength); boolean hasStrength = ControlPanelEffect.getParameterBoolean(mContext, mCallingPackageName, mAudioSession, ControlPanelEffect.Key.virt_strength_supported); if (hasStrength) { sw.setVisibility(View.GONE); } else { bar.setVisibility(View.GONE); sw.setChecked(sw.isEnabled() && strength != 0); } } 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 || !mVirtualizerIsHeadphoneOnly); ((SeekBar) findViewById(R.id.vIStrengthSeekBar)).setEnabled( mIsHeadsetOn || !mVirtualizerIsHeadphoneOnly); findViewById(R.id.vILayout).setEnabled(!mIsHeadsetOn || !mVirtualizerIsHeadphoneOnly); ((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(); } }