1 #ifndef DALI_TTS_PLAYER_H
2 #define DALI_TTS_PLAYER_H
5 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/object/base-handle.h>
23 #include <dali/public-api/signals/dali-signal.h>
26 #include <dali/public-api/dali-adaptor-common.h>
31 * @addtogroup dali_adaptor_framework
35 namespace Internal DALI_INTERNAL
41 } // namespace DALI_INTERNAL
44 * @brief The Text-to-speech (TTS) Player.
45 * @deprecated Instead of this class use Dali::Accessibility::Say() method
48 class DALI_ADAPTOR_API TtsPlayer : public BaseHandle
52 * @brief Enumeration for the instance of TTS mode.
57 DEFAULT = 0, ///< Default mode for normal application @SINCE_1_0.0
58 NOTIFICATION, ///< Notification mode, such as playing utterance is started or completed @SINCE_1_0.0
59 SCREEN_READER, ///< Screen reader mode. To help visually impaired users interact with their devices, screen reader reads text or graphic elements on the screen using the TTS engine. @SINCE_1_0.0
64 * @brief Enumeration for the instance of TTS state.
69 UNAVAILABLE = 0, ///< Player is not available @SINCE_1_0.0
70 READY, ///< Player is ready to play @SINCE_1_0.0
71 PLAYING, ///< Player is playing @SINCE_1_0.0
72 PAUSED ///< Player is paused @SINCE_1_0.0
77 * @brief Type of signal emitted when the TTS state changes.
80 typedef Signal<void(const Dali::TtsPlayer::State, const Dali::TtsPlayer::State)> StateChangedSignalType;
84 * @brief Creates an uninitialized handle.
86 * This can be initialized by calling TtsPlayer::Get().
92 * @brief Gets the singleton of the TtsPlayer for the given mode.
95 * @param mode The mode of tts-player
96 * @return A handle of the Ttsplayer for the given mode
98 static TtsPlayer Get(Dali::TtsPlayer::Mode mode = Dali::TtsPlayer::DEFAULT);
103 * This is non-virtual since derived Handle types must not contain data or virtual methods.
109 * @brief This copy constructor is required for (smart) pointer semantics.
112 * @param [in] handle A reference to the copied handle
114 TtsPlayer(const TtsPlayer& handle);
117 * @brief This assignment operator is required for (smart) pointer semantics.
120 * @param [in] rhs A reference to the copied handle
121 * @return A reference to this
123 TtsPlayer& operator=(const TtsPlayer& rhs);
126 * @brief Move constructor.
129 * @param[in] rhs A reference to the moved handle
131 TtsPlayer(TtsPlayer&& rhs);
134 * @brief Move assignment operator.
137 * @param[in] rhs A reference to the moved handle
138 * @return A reference to this handle
140 TtsPlayer& operator=(TtsPlayer&& rhs);
143 * @brief Starts playing the audio data synthesized from the specified text.
146 * @param[in] text The text to play
147 * @pre The TtsPlayer needs to be initialized.
149 void Play(const std::string& text);
152 * @brief Stops playing the utterance.
154 * @pre The TtsPlayer needs to be initialized.
159 * @brief Pauses the currently playing utterance.
161 * @pre The TtsPlayer needs to be initialized.
166 * @brief Resumes the previously paused utterance.
168 * @pre The TtsPlayer needs to be initialized.
173 * @brief Gets the current state of the player.
175 * @return The current TTS state
176 * @pre The TtsPlayer needs to be initialized.
181 * @brief Allows connection TTS state change signal.
183 * @return A reference to the signal for connection
184 * @note Only supported by some adaptor types.
186 Dali::TtsPlayer::StateChangedSignalType& StateChangedSignal();
188 public: // Not intended for application developers
191 * @brief This constructor is used by TtsPlayer::Get().
193 * @param[in] ttsPlayer A pointer to the TTS player
195 explicit DALI_INTERNAL TtsPlayer(Internal::Adaptor::TtsPlayer* ttsPlayer);
204 #endif // DALI_TTS_PLAYER_H