jackqdyulei | 2d7de48 | 2019-02-26 13:34:27 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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.settingslib.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.widget.TextView; |
| 27 | |
| 28 | import java.util.Objects; |
| 29 | |
| 30 | /** |
| 31 | * Static helpers for the volume dialog. |
| 32 | */ |
| 33 | public class Util { |
| 34 | |
| 35 | private static final int[] AUDIO_MANAGER_FLAGS = new int[]{ |
| 36 | AudioManager.FLAG_SHOW_UI, |
| 37 | AudioManager.FLAG_VIBRATE, |
| 38 | AudioManager.FLAG_PLAY_SOUND, |
| 39 | AudioManager.FLAG_ALLOW_RINGER_MODES, |
| 40 | AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE, |
| 41 | AudioManager.FLAG_SHOW_VIBRATE_HINT, |
| 42 | AudioManager.FLAG_SHOW_SILENT_HINT, |
| 43 | AudioManager.FLAG_FROM_KEY, |
| 44 | AudioManager.FLAG_SHOW_UI_WARNINGS, |
| 45 | }; |
| 46 | |
| 47 | private static final String[] AUDIO_MANAGER_FLAG_NAMES = new String[]{ |
| 48 | "SHOW_UI", |
| 49 | "VIBRATE", |
| 50 | "PLAY_SOUND", |
| 51 | "ALLOW_RINGER_MODES", |
| 52 | "REMOVE_SOUND_AND_VIBRATE", |
| 53 | "SHOW_VIBRATE_HINT", |
| 54 | "SHOW_SILENT_HINT", |
| 55 | "FROM_KEY", |
| 56 | "SHOW_UI_WARNINGS", |
| 57 | }; |
| 58 | |
| 59 | /** |
| 60 | * Extract log tag from {@code c} |
| 61 | */ |
| 62 | public static String logTag(Class<?> c) { |
| 63 | final String tag = "vol." + c.getSimpleName(); |
| 64 | return tag.length() < 23 ? tag : tag.substring(0, 23); |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Convert media metadata to string |
| 69 | */ |
| 70 | public static String mediaMetadataToString(MediaMetadata metadata) { |
| 71 | if (metadata == null) return null; |
| 72 | return metadata.getDescription().toString(); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Convert playback info to string |
| 77 | */ |
| 78 | public static String playbackInfoToString(PlaybackInfo info) { |
| 79 | if (info == null) return null; |
| 80 | final String type = playbackInfoTypeToString(info.getPlaybackType()); |
| 81 | final String vc = volumeProviderControlToString(info.getVolumeControl()); |
| 82 | return String.format("PlaybackInfo[vol=%s,max=%s,type=%s,vc=%s],atts=%s", |
| 83 | info.getCurrentVolume(), info.getMaxVolume(), type, vc, info.getAudioAttributes()); |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Convert type of playback info to string |
| 88 | */ |
| 89 | public static String playbackInfoTypeToString(int type) { |
| 90 | switch (type) { |
| 91 | case PlaybackInfo.PLAYBACK_TYPE_LOCAL: |
| 92 | return "LOCAL"; |
| 93 | case PlaybackInfo.PLAYBACK_TYPE_REMOTE: |
| 94 | return "REMOTE"; |
| 95 | default: |
| 96 | return "UNKNOWN_" + type; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Convert state of playback info to string |
| 102 | */ |
| 103 | public static String playbackStateStateToString(int state) { |
| 104 | switch (state) { |
| 105 | case PlaybackState.STATE_NONE: |
| 106 | return "STATE_NONE"; |
| 107 | case PlaybackState.STATE_STOPPED: |
| 108 | return "STATE_STOPPED"; |
| 109 | case PlaybackState.STATE_PAUSED: |
| 110 | return "STATE_PAUSED"; |
| 111 | case PlaybackState.STATE_PLAYING: |
| 112 | return "STATE_PLAYING"; |
| 113 | default: |
| 114 | return "UNKNOWN_" + state; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Convert volume provider control to string |
| 120 | */ |
| 121 | public static String volumeProviderControlToString(int control) { |
| 122 | switch (control) { |
| 123 | case VolumeProvider.VOLUME_CONTROL_ABSOLUTE: |
| 124 | return "VOLUME_CONTROL_ABSOLUTE"; |
| 125 | case VolumeProvider.VOLUME_CONTROL_FIXED: |
| 126 | return "VOLUME_CONTROL_FIXED"; |
| 127 | case VolumeProvider.VOLUME_CONTROL_RELATIVE: |
| 128 | return "VOLUME_CONTROL_RELATIVE"; |
| 129 | default: |
| 130 | return "VOLUME_CONTROL_UNKNOWN_" + control; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Convert {@link PlaybackState} to string |
| 136 | */ |
| 137 | public static String playbackStateToString(PlaybackState playbackState) { |
| 138 | if (playbackState == null) return null; |
| 139 | return playbackStateStateToString(playbackState.getState()) + " " + playbackState; |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Convert audio manager flags to string |
| 144 | */ |
| 145 | public static String audioManagerFlagsToString(int value) { |
| 146 | return bitFieldToString(value, AUDIO_MANAGER_FLAGS, AUDIO_MANAGER_FLAG_NAMES); |
| 147 | } |
| 148 | |
| 149 | protected static String bitFieldToString(int value, int[] values, String[] names) { |
| 150 | if (value == 0) return ""; |
| 151 | final StringBuilder sb = new StringBuilder(); |
| 152 | for (int i = 0; i < values.length; i++) { |
| 153 | if ((value & values[i]) != 0) { |
| 154 | if (sb.length() > 0) sb.append(','); |
| 155 | sb.append(names[i]); |
| 156 | } |
| 157 | value &= ~values[i]; |
| 158 | } |
| 159 | if (value != 0) { |
| 160 | if (sb.length() > 0) sb.append(','); |
| 161 | sb.append("UNKNOWN_").append(value); |
| 162 | } |
| 163 | return sb.toString(); |
| 164 | } |
| 165 | |
| 166 | private static CharSequence emptyToNull(CharSequence str) { |
| 167 | return str == null || str.length() == 0 ? null : str; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Set text for specific {@link TextView} |
| 172 | */ |
| 173 | public static boolean setText(TextView tv, CharSequence text) { |
| 174 | if (Objects.equals(emptyToNull(tv.getText()), emptyToNull(text))) return false; |
| 175 | tv.setText(text); |
| 176 | return true; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Return {@code true} if it is voice capable |
| 181 | */ |
| 182 | public static boolean isVoiceCapable(Context context) { |
| 183 | final TelephonyManager telephony = |
| 184 | (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); |
| 185 | return telephony != null && telephony.isVoiceCapable(); |
| 186 | } |
| 187 | } |