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74 lines
2.4 KiB
74 lines
2.4 KiB
4 months ago
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <mutex>
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#include <memory>
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#include "host/frontend/webrtc/cvd_video_frame_buffer.h"
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#include "host/frontend/webrtc/lib/video_sink.h"
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#include "host/libs/screen_connector/screen_connector.h"
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namespace cuttlefish {
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/**
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* ScreenConnectorImpl will generate this, and enqueue
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*
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* It's basically a (processed) frame, so it:
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* must be efficiently std::move-able
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* Also, for the sake of algorithm simplicity:
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* must be default-constructable & assignable
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*
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*/
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struct WebRtcScProcessedFrame : public ScreenConnectorFrameInfo {
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// must support move semantic
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std::unique_ptr<CvdVideoFrameBuffer> buf_;
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std::unique_ptr<WebRtcScProcessedFrame> Clone() {
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// copy internal buffer, not move
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CvdVideoFrameBuffer* new_buffer = new CvdVideoFrameBuffer(*(buf_.get()));
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auto cloned_frame = std::make_unique<WebRtcScProcessedFrame>();
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cloned_frame->buf_ =
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std::move(std::unique_ptr<CvdVideoFrameBuffer>(new_buffer));
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return std::move(cloned_frame);
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}
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};
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class DisplayHandler {
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public:
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using ScreenConnector = cuttlefish::ScreenConnector<WebRtcScProcessedFrame>;
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using GenerateProcessedFrameCallback = ScreenConnector::GenerateProcessedFrameCallback;
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DisplayHandler(std::shared_ptr<webrtc_streaming::VideoSink> display_sink,
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ScreenConnector& screen_connector);
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~DisplayHandler() = default;
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[[noreturn]] void Loop();
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void SendLastFrame();
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void IncClientCount();
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void DecClientCount();
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private:
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GenerateProcessedFrameCallback GetScreenConnectorCallback();
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std::shared_ptr<webrtc_streaming::VideoSink> display_sink_;
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ScreenConnector& screen_connector_;
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std::shared_ptr<webrtc_streaming::VideoFrameBuffer> last_buffer_;
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std::mutex last_buffer_mutex_;
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std::mutex next_frame_mutex_;
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int client_count_ = 0;
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};
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} // namespace cuttlefish
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