1 /* 2 * Copyright 2019 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 PC_JITTER_BUFFER_DELAY_H_ 12 #define PC_JITTER_BUFFER_DELAY_H_ 13 14 #include <stdint.h> 15 16 #include "absl/types/optional.h" 17 #include "api/sequence_checker.h" 18 #include "rtc_base/system/no_unique_address.h" 19 #include "rtc_base/thread_annotations.h" 20 21 namespace webrtc { 22 23 // JitterBufferDelay converts delay from seconds to milliseconds for the 24 // underlying media channel. It also handles cases when user sets delay before 25 // the start of media_channel by caching its request. 26 class JitterBufferDelay { 27 public: 28 JitterBufferDelay(); 29 30 void Set(absl::optional<double> delay_seconds); 31 int GetMs() const; 32 33 private: 34 RTC_NO_UNIQUE_ADDRESS SequenceChecker worker_thread_checker_; 35 absl::optional<double> cached_delay_seconds_ 36 RTC_GUARDED_BY(&worker_thread_checker_); 37 }; 38 39 } // namespace webrtc 40 41 #endif // PC_JITTER_BUFFER_DELAY_H_ 42