Przemyslaw Szczepaniak | ad6df74 | 2014-07-01 17:04:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 5 | * use this file except in compliance with the License. You may obtain a copy of |
| 6 | * 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, WITHOUT |
| 12 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | * License for the specific language governing permissions and limitations under |
| 14 | * the License. |
| 15 | */ |
| 16 | |
| 17 | package android.speech.tts; |
| 18 | |
| 19 | import android.os.Parcel; |
| 20 | import android.os.Parcelable; |
| 21 | |
| 22 | import java.util.ArrayList; |
| 23 | import java.util.Collections; |
| 24 | import java.util.HashSet; |
| 25 | import java.util.Locale; |
| 26 | import java.util.Set; |
| 27 | |
| 28 | /** |
| 29 | * Characteristics and features of a Text-To-Speech Voice. Each TTS Engine can expose |
| 30 | * multiple voices for each locale, with different set of features. |
| 31 | */ |
| 32 | public class Voice implements Parcelable { |
| 33 | /** Very low, but still intelligible quality of speech synthesis */ |
| 34 | public static final int QUALITY_VERY_LOW = 100; |
| 35 | |
| 36 | /** Low, not human-like quality of speech synthesis */ |
| 37 | public static final int QUALITY_LOW = 200; |
| 38 | |
| 39 | /** Normal quality of speech synthesis */ |
| 40 | public static final int QUALITY_NORMAL = 300; |
| 41 | |
| 42 | /** High, human-like quality of speech synthesis */ |
| 43 | public static final int QUALITY_HIGH = 400; |
| 44 | |
| 45 | /** Very high, almost human-indistinguishable quality of speech synthesis */ |
| 46 | public static final int QUALITY_VERY_HIGH = 500; |
| 47 | |
| 48 | /** Very low expected synthesizer latency (< 20ms) */ |
| 49 | public static final int LATENCY_VERY_LOW = 100; |
| 50 | |
| 51 | /** Low expected synthesizer latency (~20ms) */ |
| 52 | public static final int LATENCY_LOW = 200; |
| 53 | |
| 54 | /** Normal expected synthesizer latency (~50ms) */ |
| 55 | public static final int LATENCY_NORMAL = 300; |
| 56 | |
| 57 | /** Network based expected synthesizer latency (~200ms) */ |
| 58 | public static final int LATENCY_HIGH = 400; |
| 59 | |
| 60 | /** Very slow network based expected synthesizer latency (> 200ms) */ |
| 61 | public static final int LATENCY_VERY_HIGH = 500; |
| 62 | |
| 63 | private final String mName; |
| 64 | private final Locale mLocale; |
| 65 | private final int mQuality; |
| 66 | private final int mLatency; |
| 67 | private final boolean mRequiresNetworkConnection; |
| 68 | private final Set<String> mFeatures; |
| 69 | |
| 70 | public Voice(String name, |
| 71 | Locale locale, |
| 72 | int quality, |
| 73 | int latency, |
| 74 | boolean requiresNetworkConnection, |
| 75 | Set<String> features) { |
| 76 | this.mName = name; |
| 77 | this.mLocale = locale; |
| 78 | this.mQuality = quality; |
| 79 | this.mLatency = latency; |
| 80 | this.mRequiresNetworkConnection = requiresNetworkConnection; |
| 81 | this.mFeatures = features; |
| 82 | } |
| 83 | |
| 84 | private Voice(Parcel in) { |
| 85 | this.mName = in.readString(); |
| 86 | this.mLocale = (Locale)in.readSerializable(); |
| 87 | this.mQuality = in.readInt(); |
| 88 | this.mLatency = in.readInt(); |
| 89 | this.mRequiresNetworkConnection = (in.readByte() == 1); |
| 90 | this.mFeatures = new HashSet<String>(); |
| 91 | Collections.addAll(this.mFeatures, in.readStringArray()); |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * @hide |
| 96 | */ |
| 97 | @Override |
| 98 | public void writeToParcel(Parcel dest, int flags) { |
| 99 | dest.writeString(mName); |
| 100 | dest.writeSerializable(mLocale); |
| 101 | dest.writeInt(mQuality); |
| 102 | dest.writeInt(mLatency); |
| 103 | dest.writeByte((byte) (mRequiresNetworkConnection ? 1 : 0)); |
| 104 | dest.writeStringList(new ArrayList<String>(mFeatures)); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * @hide |
| 109 | */ |
| 110 | @Override |
| 111 | public int describeContents() { |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * @hide |
| 117 | */ |
| 118 | public static final Parcelable.Creator<Voice> CREATOR = new Parcelable.Creator<Voice>() { |
| 119 | @Override |
| 120 | public Voice createFromParcel(Parcel in) { |
| 121 | return new Voice(in); |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public Voice[] newArray(int size) { |
| 126 | return new Voice[size]; |
| 127 | } |
| 128 | }; |
| 129 | |
| 130 | |
| 131 | /** |
| 132 | * @return The voice's locale |
| 133 | */ |
| 134 | public Locale getLocale() { |
| 135 | return mLocale; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * @return The voice's quality (higher is better) |
| 140 | * @see #QUALITY_VERY_HIGH |
| 141 | * @see #QUALITY_HIGH |
| 142 | * @see #QUALITY_NORMAL |
| 143 | * @see #QUALITY_LOW |
| 144 | * @see #QUALITY_VERY_LOW |
| 145 | */ |
| 146 | public int getQuality() { |
| 147 | return mQuality; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * @return The voice's latency (lower is better) |
| 152 | * @see #LATENCY_VERY_LOW |
| 153 | * @see #LATENCY_LOW |
| 154 | * @see #LATENCY_NORMAL |
| 155 | * @see #LATENCY_HIGH |
| 156 | * @see #LATENCY_VERY_HIGH |
| 157 | */ |
| 158 | public int getLatency() { |
| 159 | return mLatency; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * @return Does the Voice require a network connection to work. |
| 164 | */ |
| 165 | public boolean getRequiresNetworkConnection() { |
| 166 | return mRequiresNetworkConnection; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * @return Unique voice name. |
| 171 | */ |
| 172 | public String getName() { |
| 173 | return mName; |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Returns the set of features it supports for a given voice. |
| 178 | * Features can either be framework defined, e.g. |
| 179 | * {@link TextToSpeech.Engine#KEY_FEATURE_NETWORK_TIMEOUT_MS} or engine specific. |
| 180 | * Engine specific keys must be prefixed by the name of the engine they |
| 181 | * are intended for. These keys can be used as parameters to |
| 182 | * {@link TextToSpeech#speak(String, int, java.util.HashMap)} and |
| 183 | * {@link TextToSpeech#synthesizeToFile(String, java.util.HashMap, String)}. |
| 184 | * |
| 185 | * Features values are strings and their values must met restrictions described in their |
| 186 | * documentation. |
| 187 | * |
| 188 | * @return Set instance. May return {@code null} on error. |
| 189 | */ |
| 190 | public Set<String> getFeatures() { |
| 191 | return mFeatures; |
| 192 | } |
| 193 | |
| 194 | @Override |
| 195 | public String toString() { |
| 196 | StringBuilder builder = new StringBuilder(64); |
| 197 | return builder.append("Voice[Name: ").append(mName) |
| 198 | .append(", locale: ").append(mLocale) |
| 199 | .append(", quality: ").append(mQuality) |
| 200 | .append(", latency: ").append(mLatency) |
| 201 | .append(", requiresNetwork: ").append(mRequiresNetworkConnection) |
| 202 | .append(", features: ").append(mFeatures.toString()) |
| 203 | .append("]").toString(); |
| 204 | } |
| 205 | |
| 206 | @Override |
| 207 | public int hashCode() { |
| 208 | final int prime = 31; |
| 209 | int result = 1; |
| 210 | result = prime * result + ((mFeatures == null) ? 0 : mFeatures.hashCode()); |
| 211 | result = prime * result + mLatency; |
| 212 | result = prime * result + ((mLocale == null) ? 0 : mLocale.hashCode()); |
| 213 | result = prime * result + ((mName == null) ? 0 : mName.hashCode()); |
| 214 | result = prime * result + mQuality; |
| 215 | result = prime * result + (mRequiresNetworkConnection ? 1231 : 1237); |
| 216 | return result; |
| 217 | } |
| 218 | |
| 219 | @Override |
| 220 | public boolean equals(Object obj) { |
| 221 | if (this == obj) { |
| 222 | return true; |
| 223 | } |
| 224 | if (obj == null) { |
| 225 | return false; |
| 226 | } |
| 227 | if (getClass() != obj.getClass()) { |
| 228 | return false; |
| 229 | } |
| 230 | Voice other = (Voice) obj; |
| 231 | if (mFeatures == null) { |
| 232 | if (other.mFeatures != null) { |
| 233 | return false; |
| 234 | } |
| 235 | } else if (!mFeatures.equals(other.mFeatures)) { |
| 236 | return false; |
| 237 | } |
| 238 | if (mLatency != other.mLatency) { |
| 239 | return false; |
| 240 | } |
| 241 | if (mLocale == null) { |
| 242 | if (other.mLocale != null) { |
| 243 | return false; |
| 244 | } |
| 245 | } else if (!mLocale.equals(other.mLocale)) { |
| 246 | return false; |
| 247 | } |
| 248 | if (mName == null) { |
| 249 | if (other.mName != null) { |
| 250 | return false; |
| 251 | } |
| 252 | } else if (!mName.equals(other.mName)) { |
| 253 | return false; |
| 254 | } |
| 255 | if (mQuality != other.mQuality) { |
| 256 | return false; |
| 257 | } |
| 258 | if (mRequiresNetworkConnection != other.mRequiresNetworkConnection) { |
| 259 | return false; |
| 260 | } |
| 261 | return true; |
| 262 | } |
| 263 | } |