1/*
2 *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef WEBRTC_VOICE_ENGINE_DTMF_INBAND_QUEUE_H
12#define WEBRTC_VOICE_ENGINE_DTMF_INBAND_QUEUE_H
13
14#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
15#include "webrtc/typedefs.h"
16#include "webrtc/voice_engine/voice_engine_defines.h"
17
18
19namespace webrtc {
20
21class DtmfInbandQueue
22{
23public:
24
25    DtmfInbandQueue(int32_t id);
26
27    virtual ~DtmfInbandQueue();
28
29    int AddDtmf(uint8_t DtmfKey, uint16_t len, uint8_t level);
30
31    int8_t NextDtmf(uint16_t* len, uint8_t* level);
32
33    bool PendingDtmf();
34
35    void ResetDtmf();
36
37private:
38    enum {kDtmfInbandMax = 20};
39
40    int32_t _id;
41    CriticalSectionWrapper& _DtmfCritsect;
42    uint8_t _nextEmptyIndex;
43    uint8_t _DtmfKey[kDtmfInbandMax];
44    uint16_t _DtmfLen[kDtmfInbandMax];
45    uint8_t _DtmfLevel[kDtmfInbandMax];
46};
47
48}  // namespace webrtc
49
50#endif  // WEBRTC_VOICE_ENGINE_DTMF_INBAND_QUEUE_H
51