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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.volume;
     18 
     19 import android.content.Context;
     20 import android.media.AudioManager;
     21 import android.media.MediaMetadata;
     22 import android.media.VolumeProvider;
     23 import android.media.session.MediaController.PlaybackInfo;
     24 import android.media.session.PlaybackState;
     25 import android.telephony.TelephonyManager;
     26 import android.view.View;
     27 import android.widget.TextView;
     28 
     29 import java.text.SimpleDateFormat;
     30 import java.util.Date;
     31 import java.util.Locale;
     32 import java.util.Objects;
     33 
     34 /**
     35  * Static helpers for the volume dialog.
     36  */
     37 class Util {
     38 
     39     // Note: currently not shown (only used in the text footer)
     40     private static final SimpleDateFormat HMMAA = new SimpleDateFormat("h:mm aa", Locale.US);
     41 
     42     private static int[] AUDIO_MANAGER_FLAGS = new int[] {
     43         AudioManager.FLAG_SHOW_UI,
     44         AudioManager.FLAG_VIBRATE,
     45         AudioManager.FLAG_PLAY_SOUND,
     46         AudioManager.FLAG_ALLOW_RINGER_MODES,
     47         AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE,
     48         AudioManager.FLAG_SHOW_VIBRATE_HINT,
     49         AudioManager.FLAG_SHOW_SILENT_HINT,
     50         AudioManager.FLAG_FROM_KEY,
     51         AudioManager.FLAG_SHOW_UI_WARNINGS,
     52     };
     53 
     54     private static String[] AUDIO_MANAGER_FLAG_NAMES = new String[] {
     55         "SHOW_UI",
     56         "VIBRATE",
     57         "PLAY_SOUND",
     58         "ALLOW_RINGER_MODES",
     59         "REMOVE_SOUND_AND_VIBRATE",
     60         "SHOW_VIBRATE_HINT",
     61         "SHOW_SILENT_HINT",
     62         "FROM_KEY",
     63         "SHOW_UI_WARNINGS",
     64     };
     65 
     66     public static String logTag(Class<?> c) {
     67         final String tag = "vol." + c.getSimpleName();
     68         return tag.length() < 23 ? tag : tag.substring(0, 23);
     69     }
     70 
     71     public static String ringerModeToString(int ringerMode) {
     72         switch (ringerMode) {
     73             case AudioManager.RINGER_MODE_SILENT: return "RINGER_MODE_SILENT";
     74             case AudioManager.RINGER_MODE_VIBRATE: return "RINGER_MODE_VIBRATE";
     75             case AudioManager.RINGER_MODE_NORMAL: return "RINGER_MODE_NORMAL";
     76             default: return "RINGER_MODE_UNKNOWN_" + ringerMode;
     77         }
     78     }
     79 
     80     public static String mediaMetadataToString(MediaMetadata metadata) {
     81         return metadata.getDescription().toString();
     82     }
     83 
     84     public static String playbackInfoToString(PlaybackInfo info) {
     85         if (info == null) return null;
     86         final String type = playbackInfoTypeToString(info.getPlaybackType());
     87         final String vc = volumeProviderControlToString(info.getVolumeControl());
     88         return String.format("PlaybackInfo[vol=%s,max=%s,type=%s,vc=%s],atts=%s",
     89                 info.getCurrentVolume(), info.getMaxVolume(), type, vc, info.getAudioAttributes());
     90     }
     91 
     92     public static String playbackInfoTypeToString(int type) {
     93         switch (type) {
     94             case PlaybackInfo.PLAYBACK_TYPE_LOCAL: return "LOCAL";
     95             case PlaybackInfo.PLAYBACK_TYPE_REMOTE: return "REMOTE";
     96             default: return "UNKNOWN_" + type;
     97         }
     98     }
     99 
    100     public static String playbackStateStateToString(int state) {
    101         switch (state) {
    102             case PlaybackState.STATE_NONE: return "STATE_NONE";
    103             case PlaybackState.STATE_STOPPED: return "STATE_STOPPED";
    104             case PlaybackState.STATE_PAUSED: return "STATE_PAUSED";
    105             case PlaybackState.STATE_PLAYING: return "STATE_PLAYING";
    106             default: return "UNKNOWN_" + state;
    107         }
    108     }
    109 
    110     public static String volumeProviderControlToString(int control) {
    111         switch (control) {
    112             case VolumeProvider.VOLUME_CONTROL_ABSOLUTE: return "VOLUME_CONTROL_ABSOLUTE";
    113             case VolumeProvider.VOLUME_CONTROL_FIXED: return "VOLUME_CONTROL_FIXED";
    114             case VolumeProvider.VOLUME_CONTROL_RELATIVE: return "VOLUME_CONTROL_RELATIVE";
    115             default: return "VOLUME_CONTROL_UNKNOWN_" + control;
    116         }
    117     }
    118 
    119     public static String playbackStateToString(PlaybackState playbackState) {
    120         if (playbackState == null) return null;
    121         return playbackStateStateToString(playbackState.getState()) + " " + playbackState;
    122     }
    123 
    124     public static String audioManagerFlagsToString(int value) {
    125         return bitFieldToString(value, AUDIO_MANAGER_FLAGS, AUDIO_MANAGER_FLAG_NAMES);
    126     }
    127 
    128     private static String bitFieldToString(int value, int[] values, String[] names) {
    129         if (value == 0) return "";
    130         final StringBuilder sb = new StringBuilder();
    131         for (int i = 0; i < values.length; i++) {
    132             if ((value & values[i]) != 0) {
    133                 if (sb.length() > 0) sb.append(',');
    134                 sb.append(names[i]);
    135             }
    136             value &= ~values[i];
    137         }
    138         if (value != 0) {
    139             if (sb.length() > 0) sb.append(',');
    140             sb.append("UNKNOWN_").append(value);
    141         }
    142         return sb.toString();
    143     }
    144 
    145     public static String getShortTime(long millis) {
    146         return HMMAA.format(new Date(millis));
    147     }
    148 
    149     private static CharSequence emptyToNull(CharSequence str) {
    150         return str == null || str.length() == 0 ? null : str;
    151     }
    152 
    153     public static boolean setText(TextView tv, CharSequence text) {
    154         if (Objects.equals(emptyToNull(tv.getText()), emptyToNull(text))) return false;
    155         tv.setText(text);
    156         return true;
    157     }
    158 
    159     public static final void setVisOrGone(View v, boolean vis) {
    160         if (v == null || (v.getVisibility() == View.VISIBLE) == vis) return;
    161         v.setVisibility(vis ? View.VISIBLE : View.GONE);
    162     }
    163 
    164     public static final void setVisOrInvis(View v, boolean vis) {
    165         if (v == null || (v.getVisibility() == View.VISIBLE) == vis) return;
    166         v.setVisibility(vis ? View.VISIBLE : View.INVISIBLE);
    167     }
    168 
    169     public static boolean isVoiceCapable(Context context) {
    170         final TelephonyManager telephony =
    171                 (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    172         return telephony != null && telephony.isVoiceCapable();
    173     }
    174 }
    175