text: /*
   *  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 WEBRTC_MODULES_RTP_RTCP_SOURCE_DTMF_QUEUE_H_
  #define WEBRTC_MODULES_RTP_RTCP_SOURCE_DTMF_QUEUE_H_
  
  #include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h"
  #include "webrtc/system_wrappers/include/critical_section_wrapper.h"
  #include "webrtc/typedefs.h"
  
  namespace webrtc {
  class DTMFqueue {
   public:
    DTMFqueue();
    virtual ~DTMFqueue();
  
    int32_t AddDTMF(uint8_t dtmf_key, uint16_t len, uint8_t level);
    int8_t NextDTMF(uint8_t* dtmf_key, uint16_t* len, uint8_t* level);
    bool PendingDTMF();
    void ResetDTMF();
  
   private:
    CriticalSectionWrapper* dtmf_critsect_;
    uint8_t next_empty_index_;
    uint8_t dtmf_key_[DTMF_OUTBAND_MAX];
    uint16_t dtmf_length[DTMF_OUTBAND_MAX];
    uint8_t dtmf_level_[DTMF_OUTBAND_MAX];
  };
  }  // namespace webrtc
  
  #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_DTMF_QUEUE_H_
  