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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CONTENT_PUBLIC_BROWSER_SPEECH_INPUT_MANAGER_DELEGATE_H_ | |
| 6 #define CONTENT_PUBLIC_BROWSER_SPEECH_INPUT_MANAGER_DELEGATE_H_ | |
| 7 #pragma once | |
| 8 | |
| 9 #include <string> | |
| 10 | |
| 11 #include "content/public/common/speech_input_result.h" | |
| 12 | |
| 13 namespace gfx { | |
| 14 class Rect; | |
| 15 } | |
| 16 | |
| 17 namespace content { | |
| 18 | |
| 19 struct SpeechInputResult; | |
| 20 | |
| 21 // Allows embedders to display the current state of recognition, for getting the | |
| 22 // user's permission and for fetching optional request information. | |
| 23 class SpeechInputManagerDelegate { | |
| 24 public: | |
| 25 // Describes the microphone errors that are reported via ShowMicError. | |
| 26 enum MicError { | |
| 27 MIC_ERROR_NO_DEVICE_AVAILABLE = 0, | |
| 28 MIC_ERROR_DEVICE_IN_USE | |
| 29 }; | |
| 30 | |
| 31 virtual ~SpeechInputManagerDelegate() {} | |
| 32 | |
| 33 // Get the optional request information if available. | |
| 34 virtual void GetRequestInfo(bool* can_report_metrics, | |
| 35 std::string* request_info) = 0; | |
| 36 | |
| 37 // Called when recognition has been requested from point |element_rect_| on | |
| 38 // the view port for the given caller. The embedder should call the | |
| 39 // StartRecognition or CancelRecognition methods on SpeechInutManager in | |
| 40 // response. | |
| 41 virtual void ShowRecognitionRequested(int caller_id, | |
| 42 int render_process_id, | |
| 43 int render_view_id, | |
| 44 const gfx::Rect& element_rect) = 0; | |
| 45 | |
| 46 // Called when recognition is starting up. | |
| 47 virtual void ShowWarmUp(int caller_id) = 0; | |
| 48 | |
| 49 // Called when recognition has started. | |
| 50 virtual void ShowRecognizing(int caller_id) = 0; | |
| 51 | |
| 52 // Called when recording has started. | |
| 53 virtual void ShowRecording(int caller_id) = 0; | |
| 54 | |
| 55 // Continuously updated with the current input volume. | |
| 56 virtual void ShowInputVolume(int caller_id, | |
| 57 float volume, | |
| 58 float noise_volume) = 0; | |
| 59 | |
| 60 // Called when no microphone has been found. | |
| 61 virtual void ShowMicError(int caller_id, MicError error) = 0; | |
| 62 | |
| 63 // Called when there has been a error with the recognition. | |
| 64 virtual void ShowRecognizerError(int caller_id, | |
| 65 SpeechInputError error) = 0; | |
| 66 | |
| 67 // Called when recognition has ended or has been canceled. | |
| 68 virtual void DoClose(int caller_id) = 0; | |
| 69 }; | |
| 70 | |
| 71 } // namespace content | |
| 72 | |
| 73 #endif // CONTENT_PUBLIC_BROWSER_SPEECH_INPUT_MANAGER_DELEGATE_H_ | |
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