Ruslan Burakov | 428dcb2 | 2019-04-18 17:49:49 +0200 | [diff] [blame] | 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 "media/base/delayable.h" |
| 18 | #include "pc/jitter_buffer_delay_interface.h" |
| 19 | #include "rtc_base/thread.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. Note, this class is not |
| 26 | // thread safe. Its thread safe version is defined in |
| 27 | // pc/jitter_buffer_delay_proxy.h |
| 28 | class JitterBufferDelay : public JitterBufferDelayInterface { |
| 29 | public: |
| 30 | // Must be called on signaling thread. |
| 31 | explicit JitterBufferDelay(rtc::Thread* worker_thread); |
| 32 | |
| 33 | void OnStart(cricket::Delayable* media_channel, uint32_t ssrc) override; |
| 34 | |
| 35 | void OnStop() override; |
| 36 | |
| 37 | void Set(absl::optional<double> delay_seconds) override; |
| 38 | |
| 39 | private: |
| 40 | // Throughout webrtc source, sometimes it is also called as |main_thread_|. |
| 41 | rtc::Thread* const signaling_thread_; |
| 42 | rtc::Thread* const worker_thread_; |
| 43 | // Media channel and ssrc together uniqely identify audio stream. |
| 44 | cricket::Delayable* media_channel_ = nullptr; |
| 45 | absl::optional<uint32_t> ssrc_; |
| 46 | absl::optional<double> cached_delay_seconds_; |
| 47 | }; |
| 48 | |
| 49 | } // namespace webrtc |
| 50 | |
| 51 | #endif // PC_JITTER_BUFFER_DELAY_H_ |