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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WebSpeechInputController_h
#define WebSpeechInputController_h
#include "WebCommon.h"
namespace WebKit {
struct WebRect;
// Provides an embedder API called by WebKit.
class WebSpeechInputController {
public:
// Starts speech recognition. Speech will get recorded until the endpointer detects silence,
// runs to the limit or stopRecording is called. Progress indications and the recognized
// text are returned via the listener interface.
virtual bool startRecognition(int requestId, const WebRect&)
{
return startRecognition(requestId);
}
// FIXME: Remove this once chromium has picked up this change.
virtual bool startRecognition(int)
{
WEBKIT_ASSERT_NOT_REACHED();
return false;
}
// Cancels an ongoing recognition and discards any audio recorded so far. No partial
// recognition results are returned to the listener.
virtual void cancelRecognition(int) { WEBKIT_ASSERT_NOT_REACHED(); }
// Stops audio recording and performs recognition with the audio recorded until now
// (does not discard audio). This is an optional call and is typically invoked if the user
// wants to stop recording audio as soon as they finished speaking. Otherwise, the speech
// recording 'endpointer' should detect silence in the input and stop recording automatically.
// Call startRecognition() to record audio and recognize speech again.
virtual void stopRecording(int) { WEBKIT_ASSERT_NOT_REACHED(); }
protected:
virtual ~WebSpeechInputController() { }
};
} // namespace WebKit
#endif // WebSpeechInputController_h
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