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 explicit ScopedVoEInterface(webrtc::VoiceEngine* e) 27 : ptr_(T::GetInterface(e)) { 28 RTC_DCHECK(ptr_); 29 } 30 ~ScopedVoEInterface() { 31 if (ptr_) { 32 ptr_->Release(); 33 } 34 } 35 T* operator->() { 36 RTC_DCHECK(ptr_); 37 return ptr_; 38 } 39 private: 40 T* ptr_; 41 }; 42 } // namespace internal 43 } // namespace webrtc 44 45 #endif // WEBRTC_AUDIO_SCOPED_VOE_INTERFACE_H_ 46
