| // 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_H_ |
| #define REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_H_ |
| |
| #include "base/callback_forward.h" |
| #include "base/memory/weak_ptr.h" |
| #include "remoting/codec/webrtc_video_encoder.h" |
| |
| namespace remoting { |
| namespace protocol { |
| |
| struct HostFrameStats; |
| class WebrtcDummyVideoEncoderFactory; |
| |
| // An abstract interface for frame schedulers, which are responsible for |
| // scheduling when video frames are captured and for defining encoding |
| // parameters for each frame. |
| class WebrtcFrameScheduler { |
| public: |
| WebrtcFrameScheduler() {} |
| virtual ~WebrtcFrameScheduler() {} |
| |
| // Starts the scheduler. |capture_callback| will be called whenever a new |
| // frame should be captured. |
| virtual void Start(WebrtcDummyVideoEncoderFactory* video_encoder_factory, |
| const base::Closure& capture_callback) = 0; |
| |
| // Pause and resumes the scheduler. |
| virtual void Pause(bool pause) = 0; |
| |
| // Called after |frame| has been captured to get encoding parameters for the |
| // frame. Returns false if the frame should be dropped (e.g. when there are no |
| // changes), true otherwise. |frame| may be set to nullptr if the capture |
| // request failed. |
| virtual bool OnFrameCaptured(const webrtc::DesktopFrame* frame, |
| WebrtcVideoEncoder::FrameParams* params_out) = 0; |
| |
| // Called after a frame has been encoded and passed to the sender. |
| // |encoded_frame| may be nullptr. If |frame_stats| is not null then sets |
| // send_pending_delay, rtt_estimate and bandwidth_estimate_kbps fields. |
| virtual void OnFrameEncoded( |
| const WebrtcVideoEncoder::EncodedFrame* encoded_frame, |
| HostFrameStats* frame_stats) = 0; |
| }; |
| |
| } // namespace protocol |
| } // namespace remoting |
| |
| #endif // REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_H_ |