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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 [DartPackage="mojo_services", JavaPackage="org.chromium.mojo.speech_recognizer"] | |
| 6 module speech_recognizer; | |
| 7 | |
| 8 enum Error { | |
| 9 NETWORK_TIMEOUT = 1, | |
| 10 NETWORK = 2, | |
| 11 AUDIO = 3, | |
| 12 SERVER = 4, | |
| 13 CLIENT = 5, | |
| 14 SPEECH_TIMEOUT = 6, | |
| 15 NO_MATCH = 7, | |
| 16 RECOGNIZER_BUSY = 8, | |
| 17 INSUFFICIENT_PERMISSIONS = 9 | |
| 18 }; | |
| 19 | |
| 20 struct UtteranceCandidate { | |
| 21 // Utterance text candidate returned by speech recognition service. | |
| 22 string text; | |
| 23 | |
| 24 // Confidence score in [0,1]. | |
| 25 float confidence_score; | |
| 26 }; | |
| 27 | |
| 28 union ResultOrError { | |
| 29 Error error_code; | |
| 30 array<UtteranceCandidate> results; | |
| 31 }; | |
| 32 | |
| 33 // |SpeechRecognizerService| provides access to a speech recognition service. | |
| 34 // It is responsible for reading microphone input, deciding when the user is | |
| 35 // done speaking, and performing speech recognition on the result. | |
| 36 interface SpeechRecognizerService { | |
| 37 // Starts listening to the user. When listening has finished or an error | |
| 38 // occurs, returns |result_or_error|. Any call to Listen() made while another | |
| 39 // is in progress will immediately return an error. | |
| 40 Listen() => (ResultOrError result_or_error); | |
| 41 | |
| 42 // Stops the SpeechRecognizer from listening and finishes any previous call | |
| 43 // to Listen() causing it to return. | |
| 44 StopListening(); | |
| 45 }; | |
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