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
32namespace blink {
33
34class WebSpeechGrammar;
35class WebSpeechRecognitionParams;
36class WebSpeechRecognizerClient;
37
38// Interface for speech recognition, to be implemented by the embedder.
39class WebSpeechRecognizer {
40public:
41    // Start speech recognition for the specified handle using the specified parameters. Notifications on progress, results, and errors will be sent via the client.
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.
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.
48    virtual void abort(const WebSpeechRecognitionHandle&, WebSpeechRecognizerClient*) { BLINK_ASSERT_NOT_REACHED(); }
49
50protected:
51    virtual ~WebSpeechRecognizer() { }
52};
53
54} // namespace blink
55
56#endif // WebSpeechRecognizer_h
57