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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 SpeechInputClient_h
#define SpeechInputClient_h
#if ENABLE(INPUT_SPEECH)
namespace WebCore {
class SpeechInputListener;
// Provides an interface for SpeechInput to call into the embedder.
class SpeechInputClient {
public:
// This is the first call made by a listener, registering itself for future callbacks.
// When the listener no longer needs speech input (for e.g. when it gets destroyed),
// it should set a null listener to stop receiving callbacks.
// The client does not take ownership of the pointer.
virtual void setListener(SpeechInputListener*) = 0;
// Starts speech recognition and audio recording.
virtual bool startRecognition(int requestId) = 0;
// Stops audio recording and performs recognition with the audio recorded until now
// (does not discard audio).
virtual void stopRecording(int requestId) = 0;
// Cancels an ongoing recognition and discards any audio recorded so far. No partial
// recognition results are returned to the listener.
virtual void cancelRecognition(int requestId) = 0;
protected:
virtual ~SpeechInputClient() { }
};
} // namespace WebCore
#endif // ENABLE(INPUT_SPEECH)
#endif // SpeechInputClient_h
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