blob: 806fff06e351bec0528c0276aaad74971dd2448a [file] [log] [blame]
* 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.
#if _MSC_VER > 1000
#pragma once
#include "typedefs.h"
#include "voice_engine_defines.h"
namespace webrtc {
class CriticalSectionWrapper;
class DtmfInband
DtmfInband(const WebRtc_Word32 id);
virtual ~DtmfInband();
void Init();
int SetSampleRate(const WebRtc_UWord16 frequency);
int GetSampleRate(WebRtc_UWord16& frequency);
int AddTone(const WebRtc_UWord8 eventCode,
WebRtc_Word32 lengthMs,
WebRtc_Word32 attenuationDb);
int ResetTone();
int StartTone(const WebRtc_UWord8 eventCode,
WebRtc_Word32 attenuationDb);
int StopTone();
bool IsAddingTone();
int Get10msTone(WebRtc_Word16 output[320],
WebRtc_UWord16& outputSizeInSamples);
WebRtc_UWord32 DelaySinceLastTone() const;
void UpdateDelaySinceLastTone();
void ReInit();
WebRtc_Word16 DtmfFix_generate(WebRtc_Word16* decoded,
const WebRtc_Word16 value,
const WebRtc_Word16 volume,
const WebRtc_Word16 frameLen,
const WebRtc_Word16 fs);
enum {kDtmfFrameSizeMs = 10};
enum {kDtmfAmpHigh = 32768};
enum {kDtmfAmpLow = 23171}; // 3 dB lower than the high frequency
WebRtc_Word16 DtmfFix_generateSignal(const WebRtc_Word16 a1_times2,
const WebRtc_Word16 a2_times2,
const WebRtc_Word16 volume,
WebRtc_Word16* signal,
const WebRtc_Word16 length);
CriticalSectionWrapper& _critSect;
WebRtc_Word32 _id;
WebRtc_UWord16 _outputFrequencyHz; // {8000, 16000, 32000}
WebRtc_Word16 _oldOutputLow[2]; // Data needed for oscillator model
WebRtc_Word16 _oldOutputHigh[2]; // Data needed for oscillator model
WebRtc_Word16 _frameLengthSamples; // {80, 160, 320}
WebRtc_Word32 _remainingSamples;
WebRtc_Word16 _eventCode; // [0, 15]
WebRtc_Word16 _attenuationDb; // [0, 36]
WebRtc_Word32 _lengthMs;
bool _reinit; // 'true' if the oscillator should be reinit for next event
bool _playing;
WebRtc_UWord32 _delaySinceLastToneMS; // time since last generated tone [ms]
} // namespace webrtc