mirror of
https://github.com/Evolution-X/hardware_interfaces
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e04a700d86
Test: Build and run (mock) evs_app tests Bug: 300533205 Change-Id: I8e43c5879dee9942c27d69cdfb3012d35b123441
145 lines
5.0 KiB
C++
145 lines
5.0 KiB
C++
/*
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* Copyright (C) 2023 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 "EvsCameraBase.h"
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#include <aidl/android/hardware/automotive/evs/IEvsCameraStream.h>
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#include <cutils/native_handle.h>
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#include <cstddef>
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#include <mutex>
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#include <utility>
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#include <vector>
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namespace aidl::android::hardware::automotive::evs::implementation {
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class EvsCamera : public EvsCameraBase {
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private:
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using Base = EvsCameraBase;
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using Self = EvsCamera;
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public:
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using Base::Base;
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~EvsCamera() override;
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// Methods from ::android::hardware::automotive::evs::IEvsCamera follow.
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ndk::ScopedAStatus doneWithFrame(const std::vector<evs::BufferDesc>& buffers) override;
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ndk::ScopedAStatus importExternalBuffers(const std::vector<evs::BufferDesc>& buffers,
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int32_t* _aidl_return) override;
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ndk::ScopedAStatus setMaxFramesInFlight(int32_t bufferCount) override;
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ndk::ScopedAStatus startVideoStream(
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const std::shared_ptr<evs::IEvsCameraStream>& receiver) override;
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ndk::ScopedAStatus stopVideoStream() override;
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ndk::ScopedAStatus pauseVideoStream() override;
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ndk::ScopedAStatus resumeVideoStream() override;
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protected:
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virtual ::android::status_t allocateOneFrame(buffer_handle_t* handle) = 0;
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virtual void freeOneFrame(const buffer_handle_t handle);
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virtual bool preVideoStreamStart_locked(const std::shared_ptr<evs::IEvsCameraStream>& receiver,
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ndk::ScopedAStatus& status,
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std::unique_lock<std::mutex>& lck);
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virtual bool startVideoStreamImpl_locked(const std::shared_ptr<evs::IEvsCameraStream>& receiver,
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ndk::ScopedAStatus& status,
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std::unique_lock<std::mutex>& lck) = 0;
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virtual bool postVideoStreamStart_locked(const std::shared_ptr<evs::IEvsCameraStream>& receiver,
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ndk::ScopedAStatus& status,
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std::unique_lock<std::mutex>& lck);
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virtual bool preVideoStreamStop_locked(ndk::ScopedAStatus& status,
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std::unique_lock<std::mutex>& lck);
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virtual bool stopVideoStreamImpl_locked(ndk::ScopedAStatus& status,
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std::unique_lock<std::mutex>& lck) = 0;
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virtual bool postVideoStreamStop_locked(ndk::ScopedAStatus& status,
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std::unique_lock<std::mutex>& lck);
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void shutdown() override;
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void closeAllBuffers_unsafe();
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// Returns (ID, handle) if succeeds. (kInvalidBufferID, nullptr) otherwise.
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[[nodiscard]] std::pair<std::size_t, buffer_handle_t> useBuffer_unsafe();
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void returnBuffer_unsafe(const std::size_t id);
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bool increaseAvailableFrames_unsafe(const buffer_handle_t handle);
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bool decreaseAvailableFrames_unsafe();
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bool setAvailableFrames_unsafe(const std::size_t bufferCount);
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void swapBufferFrames_unsafe(const std::size_t pos1, const std::size_t pos2);
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struct BufferRecord {
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BufferRecord() = default;
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BufferRecord(const BufferRecord&) = default;
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BufferRecord(BufferRecord&&) = default;
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BufferRecord& operator=(const BufferRecord&) = default;
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BufferRecord& operator=(BufferRecord&&) = default;
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~BufferRecord() = default;
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explicit BufferRecord(buffer_handle_t h) : handle(h) {}
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buffer_handle_t handle{nullptr};
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bool inUse{false};
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};
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enum class StreamState {
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STOPPED = 0,
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RUNNING = 1,
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STOPPING = 2,
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DEAD = 3,
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};
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StreamState mStreamState{StreamState::STOPPED};
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std::mutex mMutex;
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// Graphics buffers to transfer images, always in the order of:
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// In use buffers ... available buffers ... unavailable (unallocated) buffers.
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std::vector<BufferRecord> mBuffers;
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// Double-mapping between buffer position and ID.
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std::vector<std::size_t> mBufferPosToId;
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std::vector<std::size_t> mBufferIdToPos;
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std::size_t mAvailableFrames{0};
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std::size_t mFramesInUse{0};
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// We use all 1's as a reserved invalid buffer ID.
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static constexpr std::size_t kInvalidBufferID = ~static_cast<std::size_t>(0);
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public:
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static bool IsBufferIDValid(const std::size_t bufferId) { return ~bufferId; }
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};
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} // namespace aidl::android::hardware::automotive::evs::implementation
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