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Side by Side Diff: content/public/browser/speech_recognizer_delegate.h

Issue 9568002: Renamed speech input implementation from to speech_recognition_*. The namespace has been renamed fr… (Closed) Base URL: http://git.chromium.org/chromium/src.git@master
Patch Set: Rebased from master. Created 8 years, 9 months ago
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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 CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_ 5 #ifndef CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_
6 #define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_ 6 #define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_
7 #pragma once 7 #pragma once
8 8
9 #include "content/public/common/speech_input_result.h" 9 #include "content/public/common/speech_recognition_result.h"
10 10
11 namespace content { 11 namespace content {
12 12
13 // An interface to be implemented by consumers interested in receiving 13 // An interface to be implemented by consumers interested in receiving
14 // recognition events. 14 // recognition events.
15 class SpeechRecognizerDelegate { 15 class SpeechRecognizerDelegate {
16 public: 16 public:
17 virtual void SetRecognitionResult(int caller_id, 17 virtual void SetRecognitionResult(int caller_id,
18 const SpeechInputResult& result) = 0; 18 const SpeechRecognitionResult& result) = 0;
19 19
20 // Invoked when the first audio packet was received from the audio capture 20 // Invoked when the first audio packet was received from the audio capture
21 // device. 21 // device.
22 virtual void DidStartReceivingAudio(int caller_id) = 0; 22 virtual void DidStartReceivingAudio(int caller_id) = 0;
23 23
24 // Invoked when audio recording stops, either due to the end pointer 24 // Invoked when audio recording stops, either due to the end pointer
25 // detecting silence in user input or if |StopRecording| was called. The 25 // detecting silence in user input or if |StopRecording| was called. The
26 // delegate has to wait until |DidCompleteRecognition| is invoked before 26 // delegate has to wait until |DidCompleteRecognition| is invoked before
27 // destroying the |SpeechRecognizer| object. 27 // destroying the |SpeechRecognizer| object.
28 virtual void DidCompleteRecording(int caller_id) = 0; 28 virtual void DidCompleteRecording(int caller_id) = 0;
29 29
30 // This is guaranteed to be the last method invoked in the recognition 30 // This is guaranteed to be the last method invoked in the recognition
31 // sequence and the |SpeechRecognizer| object can be freed up if necessary. 31 // sequence and the |SpeechRecognizer| object can be freed up if necessary.
32 virtual void DidCompleteRecognition(int caller_id) = 0; 32 virtual void DidCompleteRecognition(int caller_id) = 0;
33 33
34 // Informs that the end pointer has started detecting speech. 34 // Informs that the end pointer has started detecting speech.
35 virtual void DidStartReceivingSpeech(int caller_id) = 0; 35 virtual void DidStartReceivingSpeech(int caller_id) = 0;
36 36
37 // Informs that the end pointer has stopped detecting speech. 37 // Informs that the end pointer has stopped detecting speech.
38 virtual void DidStopReceivingSpeech(int caller_id) = 0; 38 virtual void DidStopReceivingSpeech(int caller_id) = 0;
39 39
40 // Invoked if there was an error while recording or recognizing audio. The 40 // Invoked if there was an error while recording or recognizing audio. The
41 // session has already been cancelled when this call is made and the DidXxxx 41 // session has already been cancelled when this call is made and the DidXxxx
42 // callbacks will not be issued. It is safe to destroy/release the 42 // callbacks will not be issued. It is safe to destroy/release the
43 // |SpeechRecognizer| object while processing this call. 43 // |SpeechRecognizer| object while processing this call.
44 virtual void OnRecognizerError(int caller_id, SpeechInputError error) = 0; 44 virtual void OnRecognizerError(int caller_id,
45 SpeechRecognitionErrorCode error) = 0;
45 46
46 // At the start of recognition, a short amount of audio is recorded to 47 // At the start of recognition, a short amount of audio is recorded to
47 // estimate the environment/background noise and this callback is issued 48 // estimate the environment/background noise and this callback is issued
48 // after that is complete. Typically the delegate brings up any speech 49 // after that is complete. Typically the delegate brings up any speech
49 // recognition UI once this callback is received. 50 // recognition UI once this callback is received.
50 virtual void DidCompleteEnvironmentEstimation(int caller_id) = 0; 51 virtual void DidCompleteEnvironmentEstimation(int caller_id) = 0;
51 52
52 // Informs of a change in the captured audio level, useful if displaying 53 // Informs of a change in the captured audio level, useful if displaying
53 // a microphone volume indicator while recording. 54 // a microphone volume indicator while recording.
54 // The value of |volume| and |noise_volume| is in the [0.0, 1.0] range. 55 // The value of |volume| and |noise_volume| is in the [0.0, 1.0] range.
55 virtual void SetInputVolume(int caller_id, 56 virtual void SetInputVolume(int caller_id,
56 float volume, 57 float volume,
57 float noise_volume) = 0; 58 float noise_volume) = 0;
58 59
59 protected: 60 protected:
60 virtual ~SpeechRecognizerDelegate() {} 61 virtual ~SpeechRecognizerDelegate() {}
61 }; 62 };
62 63
63 } // namespace content 64 } // namespace content
64 65
65 #endif // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_ 66 #endif // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_
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