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1 /*
2  * Copyright (C) 2012 Google Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *  * Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  *  * Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef WebSpeechRecognizer_h
27 #define WebSpeechRecognizer_h
28 
29 #include "../platform/WebCommon.h"
30 #include "WebSpeechRecognitionHandle.h"
31 
32 namespace blink {
33 
34 class WebSpeechGrammar;
35 class WebSpeechRecognitionParams;
36 class WebSpeechRecognizerClient;
37 
38 // Interface for speech recognition, to be implemented by the embedder.
39 class WebSpeechRecognizer {
40 public:
41     // Start speech recognition for the specified handle using the specified parameters. Notifications on progress, results, and errors will be sent via the client.
start(const WebSpeechRecognitionHandle &,const WebSpeechRecognitionParams &,WebSpeechRecognizerClient *)42     virtual void start(const WebSpeechRecognitionHandle&, const WebSpeechRecognitionParams&, WebSpeechRecognizerClient*) { BLINK_ASSERT_NOT_REACHED(); }
43 
44     // Stop speech recognition for the specified handle, returning any results for the audio recorded so far. Notifications and errors are sent via the client.
stop(const WebSpeechRecognitionHandle &,WebSpeechRecognizerClient *)45     virtual void stop(const WebSpeechRecognitionHandle&, WebSpeechRecognizerClient*) { BLINK_ASSERT_NOT_REACHED(); }
46 
47     // Abort speech recognition for the specified handle, discarding any recorded audio. Notifications and errors are sent via the client.
abort(const WebSpeechRecognitionHandle &,WebSpeechRecognizerClient *)48     virtual void abort(const WebSpeechRecognitionHandle&, WebSpeechRecognizerClient*) { BLINK_ASSERT_NOT_REACHED(); }
49 
50 protected:
~WebSpeechRecognizer()51     virtual ~WebSpeechRecognizer() { }
52 };
53 
54 } // namespace blink
55 
56 #endif // WebSpeechRecognizer_h
57