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69 lines
2.3 KiB
69 lines
2.3 KiB
/*
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* Copyright (C) 2021 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 <android/hardware/graphics/mapper/2.0/IMapper.h>
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#include <atomic>
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#include <mutex>
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#include <thread>
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#include <vector>
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#include "utils/Timers.h"
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#include "vsock_connection.h"
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namespace cuttlefish {
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using ::android::hardware::graphics::mapper::V2_0::YCbCrLayout;
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// VsockFrameProvider reads data from vsock
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// Users can get the data by using copyYUVFrame/copyJpegData methods
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class VsockFrameProvider {
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public:
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VsockFrameProvider() = default;
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~VsockFrameProvider();
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VsockFrameProvider(const VsockFrameProvider&) = delete;
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VsockFrameProvider& operator=(const VsockFrameProvider&) = delete;
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void start(std::shared_ptr<cuttlefish::VsockConnection> connection,
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uint32_t expected_width, uint32_t expected_height);
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void stop();
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void requestJpeg();
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void cancelJpegRequest();
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bool jpegPending() const { return jpeg_pending_.load(); }
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bool isRunning() const { return running_.load(); }
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bool waitYUVFrame(unsigned int max_wait_ms);
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bool copyYUVFrame(uint32_t width, uint32_t height, YCbCrLayout dst);
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bool copyJpegData(uint32_t size, void* dst);
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private:
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bool isBlob(const std::vector<char>& blob);
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bool framesizeMatches(uint32_t width, uint32_t height,
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const std::vector<char>& data);
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void VsockReadLoop(uint32_t expected_width, uint32_t expected_height);
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std::thread reader_thread_;
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std::mutex frame_mutex_;
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std::mutex jpeg_mutex_;
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std::atomic<nsecs_t> timestamp_;
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std::atomic<bool> running_;
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std::atomic<bool> jpeg_pending_;
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std::vector<char> frame_;
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std::vector<char> next_frame_;
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std::vector<char> cached_jpeg_;
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std::condition_variable yuv_frame_updated_;
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std::shared_ptr<cuttlefish::VsockConnection> connection_;
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};
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} // namespace cuttlefish
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