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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_ | 5 #ifndef CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_ |
6 #define CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_ | 6 #define CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_ |
7 | 7 |
8 #include <queue> | 8 #include <queue> |
9 #include <set> | 9 #include <set> |
10 #include <string> | 10 #include <string> |
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24 | 24 |
25 // Events sent back from the TTS engine indicating the progress. | 25 // Events sent back from the TTS engine indicating the progress. |
26 enum TtsEventType { | 26 enum TtsEventType { |
27 TTS_EVENT_START, | 27 TTS_EVENT_START, |
28 TTS_EVENT_END, | 28 TTS_EVENT_END, |
29 TTS_EVENT_WORD, | 29 TTS_EVENT_WORD, |
30 TTS_EVENT_SENTENCE, | 30 TTS_EVENT_SENTENCE, |
31 TTS_EVENT_MARKER, | 31 TTS_EVENT_MARKER, |
32 TTS_EVENT_INTERRUPTED, | 32 TTS_EVENT_INTERRUPTED, |
33 TTS_EVENT_CANCELLED, | 33 TTS_EVENT_CANCELLED, |
34 TTS_EVENT_ERROR | 34 TTS_EVENT_ERROR, |
| 35 TTS_EVENT_PAUSE, |
| 36 TTS_EVENT_RESUME |
35 }; | 37 }; |
36 | 38 |
37 enum TtsGenderType { | 39 enum TtsGenderType { |
38 TTS_GENDER_NONE, | 40 TTS_GENDER_NONE, |
39 TTS_GENDER_MALE, | 41 TTS_GENDER_MALE, |
40 TTS_GENDER_FEMALE | 42 TTS_GENDER_FEMALE |
41 }; | 43 }; |
42 | 44 |
43 // Returns true if this event type is one that indicates an utterance | 45 // Returns true if this event type is one that indicates an utterance |
44 // is finished and can be destroyed. | 46 // is finished and can be destroyed. |
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244 | 246 |
245 // Returns true if we're currently speaking an utterance. | 247 // Returns true if we're currently speaking an utterance. |
246 bool IsSpeaking(); | 248 bool IsSpeaking(); |
247 | 249 |
248 // Speak the given utterance. If the utterance's can_enqueue flag is true | 250 // Speak the given utterance. If the utterance's can_enqueue flag is true |
249 // and another utterance is in progress, adds it to the end of the queue. | 251 // and another utterance is in progress, adds it to the end of the queue. |
250 // Otherwise, interrupts any current utterance and speaks this one | 252 // Otherwise, interrupts any current utterance and speaks this one |
251 // immediately. | 253 // immediately. |
252 void SpeakOrEnqueue(Utterance* utterance); | 254 void SpeakOrEnqueue(Utterance* utterance); |
253 | 255 |
254 // Stop all utterances and flush the queue. | 256 // Stop all utterances and flush the queue. Implies leaving pause mode |
| 257 // as well. |
255 void Stop(); | 258 void Stop(); |
256 | 259 |
| 260 // Pause the speech queue. Some engines may support pausing in the middle |
| 261 // of an utterance. |
| 262 void Pause(); |
| 263 |
| 264 // Resume speaking. |
| 265 void Resume(); |
| 266 |
257 // Handle events received from the speech engine. Events are forwarded to | 267 // Handle events received from the speech engine. Events are forwarded to |
258 // the callback function, and in addition, completion and error events | 268 // the callback function, and in addition, completion and error events |
259 // trigger finishing the current utterance and starting the next one, if | 269 // trigger finishing the current utterance and starting the next one, if |
260 // any. | 270 // any. |
261 void OnTtsEvent(int utterance_id, | 271 void OnTtsEvent(int utterance_id, |
262 TtsEventType event_type, | 272 TtsEventType event_type, |
263 int char_index, | 273 int char_index, |
264 const std::string& error_message); | 274 const std::string& error_message); |
265 | 275 |
266 // Return a list of all available voices, including the native voice, | 276 // Return a list of all available voices, including the native voice, |
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310 // Given an utterance and a vector of voices, return the | 320 // Given an utterance and a vector of voices, return the |
311 // index of the voice that best matches the utterance. | 321 // index of the voice that best matches the utterance. |
312 int GetMatchingVoice(const Utterance* utterance, | 322 int GetMatchingVoice(const Utterance* utterance, |
313 std::vector<VoiceData>& voices); | 323 std::vector<VoiceData>& voices); |
314 | 324 |
315 friend struct DefaultSingletonTraits<TtsController>; | 325 friend struct DefaultSingletonTraits<TtsController>; |
316 | 326 |
317 // The current utterance being spoken. | 327 // The current utterance being spoken. |
318 Utterance* current_utterance_; | 328 Utterance* current_utterance_; |
319 | 329 |
| 330 // Whether the queue is paused or not. |
| 331 bool paused_; |
| 332 |
320 // A queue of utterances to speak after the current one finishes. | 333 // A queue of utterances to speak after the current one finishes. |
321 std::queue<Utterance*> utterance_queue_; | 334 std::queue<Utterance*> utterance_queue_; |
322 | 335 |
323 // A set of delegates that want to be notified when the voices change. | 336 // A set of delegates that want to be notified when the voices change. |
324 std::set<VoicesChangedDelegate*> voices_changed_delegates_; | 337 std::set<VoicesChangedDelegate*> voices_changed_delegates_; |
325 | 338 |
326 // A pointer to the platform implementation of text-to-speech, for | 339 // A pointer to the platform implementation of text-to-speech, for |
327 // dependency injection. | 340 // dependency injection. |
328 TtsPlatformImpl* platform_impl_; | 341 TtsPlatformImpl* platform_impl_; |
329 | 342 |
330 DISALLOW_COPY_AND_ASSIGN(TtsController); | 343 DISALLOW_COPY_AND_ASSIGN(TtsController); |
331 }; | 344 }; |
332 | 345 |
333 #endif // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_ | 346 #endif // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_ |
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