Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2015 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_AUDIO_SCOPED_VOE_INTERFACE_H_
      12             : #define WEBRTC_AUDIO_SCOPED_VOE_INTERFACE_H_
      13             : 
      14             : #include "webrtc/base/checks.h"
      15             : 
      16             : namespace webrtc {
      17             : 
      18             : class VoiceEngine;
      19             : 
      20             : namespace internal {
      21             : 
      22             : // Utility template for obtaining and holding a reference to a VoiceEngine
      23             : // interface and making sure it is released when this object goes out of scope.
      24             : template<class T> class ScopedVoEInterface {
      25             :  public:
      26           0 :   explicit ScopedVoEInterface(webrtc::VoiceEngine* e)
      27           0 :       : ptr_(T::GetInterface(e)) {
      28           0 :     RTC_DCHECK(ptr_);
      29           0 :   }
      30           0 :   ~ScopedVoEInterface() {
      31           0 :     if (ptr_) {
      32           0 :       ptr_->Release();
      33             :     }
      34           0 :   }
      35           0 :   T* operator->() {
      36           0 :     RTC_DCHECK(ptr_);
      37           0 :     return ptr_;
      38             :   }
      39             :  private:
      40             :   T* ptr_;
      41             : };
      42             : }  // namespace internal
      43             : }  // namespace webrtc
      44             : 
      45             : #endif  // WEBRTC_AUDIO_SCOPED_VOE_INTERFACE_H_