| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_SIMPLE_H_ |
| #define REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_SIMPLE_H_ |
| |
| #include "remoting/protocol/webrtc_frame_scheduler.h" |
| |
| #include "base/timer/timer.h" |
| #include "remoting/base/leaky_bucket.h" |
| #include "remoting/base/running_samples.h" |
| |
| namespace remoting { |
| namespace protocol { |
| |
| // WebrtcFrameSchedulerSimple is a simple implementation of |
| // WebrtcFrameScheduler that always keeps only one frame in the pipeline. |
| // It schedules each frame after the previous one is expected to finish sending. |
| class WebrtcFrameSchedulerSimple : public WebrtcFrameScheduler { |
| public: |
| WebrtcFrameSchedulerSimple(); |
| ~WebrtcFrameSchedulerSimple() override; |
| |
| // WebrtcFrameScheduler implementation. |
| void Start(const base::Closure& capture_callback) override; |
| void Pause(bool pause) override; |
| void SetKeyFrameRequest() override; |
| void SetTargetBitrate(int bitrate_kbps) override; |
| bool GetEncoderFrameParams( |
| const webrtc::DesktopFrame& frame, |
| WebrtcVideoEncoder::FrameParams* params_out) override; |
| void OnFrameEncoded( |
| const WebrtcVideoEncoder::EncodedFrame& encoded_frame, |
| const webrtc::EncodedImageCallback::Result& send_result) override; |
| |
| private: |
| void ScheduleNextFrame(base::TimeTicks now); |
| void CaptureNextFrame(); |
| |
| base::Closure capture_callback_; |
| bool paused_ = false; |
| bool key_frame_request_ = false; |
| |
| base::TimeTicks last_capture_started_time_; |
| |
| LeakyBucket pacing_bucket_; |
| |
| // Set to true when encoding unchanged frames for top-off. |
| bool top_off_is_active_ = false; |
| |
| // Accumulator for capture and encoder delay history. |
| RunningSamples frame_processing_delay_us_; |
| |
| // Accumulator for updated region area in the previously encoded frames. |
| RunningSamples updated_region_area_; |
| |
| base::OneShotTimer capture_timer_; |
| }; |
| |
| } // namespace protocol |
| } // namespace remoting |
| |
| #endif // REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_SIMPLE_H_ |