Index: content/public/browser/speech_recognizer_delegate.h |
=================================================================== |
--- content/public/browser/speech_recognizer_delegate.h (revision 121818) |
+++ content/public/browser/speech_recognizer_delegate.h (working copy) |
@@ -1,65 +0,0 @@ |
-// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_ |
-#define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_ |
-#pragma once |
- |
-#include "content/public/common/speech_input_result.h" |
- |
-namespace content { |
- |
-// An interface to be implemented by consumers interested in receiving |
-// recognition events. |
-class SpeechRecognizerDelegate { |
- public: |
- virtual void SetRecognitionResult(int caller_id, |
- const SpeechInputResult& result) = 0; |
- |
- // Invoked when the first audio packet was received from the audio capture |
- // device. |
- virtual void DidStartReceivingAudio(int caller_id) = 0; |
- |
- // Invoked when audio recording stops, either due to the end pointer |
- // detecting silence in user input or if |StopRecording| was called. The |
- // delegate has to wait until |DidCompleteRecognition| is invoked before |
- // destroying the |SpeechRecognizer| object. |
- virtual void DidCompleteRecording(int caller_id) = 0; |
- |
- // This is guaranteed to be the last method invoked in the recognition |
- // sequence and the |SpeechRecognizer| object can be freed up if necessary. |
- virtual void DidCompleteRecognition(int caller_id) = 0; |
- |
- // Informs that the end pointer has started detecting speech. |
- virtual void DidStartReceivingSpeech(int caller_id) = 0; |
- |
- // Informs that the end pointer has stopped detecting speech. |
- virtual void DidStopReceivingSpeech(int caller_id) = 0; |
- |
- // Invoked if there was an error while recording or recognizing audio. The |
- // session has already been cancelled when this call is made and the DidXxxx |
- // callbacks will not be issued. It is safe to destroy/release the |
- // |SpeechRecognizer| object while processing this call. |
- virtual void OnRecognizerError(int caller_id, SpeechInputError error) = 0; |
- |
- // At the start of recognition, a short amount of audio is recorded to |
- // estimate the environment/background noise and this callback is issued |
- // after that is complete. Typically the delegate brings up any speech |
- // recognition UI once this callback is received. |
- virtual void DidCompleteEnvironmentEstimation(int caller_id) = 0; |
- |
- // Informs of a change in the captured audio level, useful if displaying |
- // a microphone volume indicator while recording. |
- // The value of |volume| and |noise_volume| is in the [0.0, 1.0] range. |
- virtual void SetInputVolume(int caller_id, |
- float volume, |
- float noise_volume) = 0; |
- |
- protected: |
- virtual ~SpeechRecognizerDelegate() {} |
-}; |
- |
-} // namespace content |
- |
-#endif // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNIZER_DELEGATE_H_ |