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_INTERFACE_H_ 12 #define PC_JITTER_BUFFER_DELAY_INTERFACE_H_ 13 14 #include <stdint.h> 15 16 #include "absl/types/optional.h" 17 #include "media/base/delayable.h" 18 #include "rtc_base/ref_count.h" 19 20 namespace webrtc { 21 22 // JitterBufferDelay delivers user's queries to the underlying media channel. It 23 // can describe either video or audio delay for receiving stream. "Interface" 24 // suffix in the interface name is required to be compatible with api/proxy.cc 25 class JitterBufferDelayInterface : public rtc::RefCountInterface { 26 public: 27 // OnStart allows to uniqely identify to which receiving stream playout 28 // delay must correpond through |media_channel| and |ssrc| pair. 29 virtual void OnStart(cricket::Delayable* media_channel, uint32_t ssrc) = 0; 30 31 // Indicates that underlying receiving stream is stopped. 32 virtual void OnStop() = 0; 33 34 virtual void Set(absl::optional<double> delay_seconds) = 0; 35 }; 36 37 } // namespace webrtc 38 39 #endif // PC_JITTER_BUFFER_DELAY_INTERFACE_H_ 40