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/include/critical_section_wrapper.h"
15 #include "webrtc/typedefs.h"
16 #include "webrtc/voice_engine/voice_engine_defines.h"
17 
18 
19 namespace webrtc {
20 
21 class DtmfInbandQueue
22 {
23 public:
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 
37 private:
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