/*
 *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef ACM_DTMF_DETECTION_H
#define ACM_DTMF_DETECTION_H

#include "acm_resampler.h"
#include "audio_coding_module_typedefs.h"
#include "typedefs.h"

namespace webrtc
{

class ACMDTMFDetection
{
public:
    ACMDTMFDetection();
    ~ACMDTMFDetection();
    WebRtc_Word16 Enable(ACMCountries cpt = ACMDisableCountryDetection);
    WebRtc_Word16 Disable();
    WebRtc_Word16 Detect(
        const WebRtc_Word16* inAudioBuff,
        const WebRtc_UWord16 inBuffLenWord16,
        const WebRtc_Word32  inFreqHz,
        bool&                toneDetected,
        WebRtc_Word16&       tone);
    
    static WebRtc_Word16 GetVersion(
        WebRtc_Word8*   version,
        WebRtc_UWord32& remainingBufferInBytes,
        WebRtc_UWord32& position);

private:
    ACMResampler  _resampler;    
    bool          _init;
};

} // namespace webrtc

#endif // ACM_DTMF_DETECTION_H