153 lines
4.7 KiB
C++
153 lines
4.7 KiB
C++
/*
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* Copyright 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 <aidl/android/hardware/tv/tuner/BnDvr.h>
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#include <aidl/android/hardware/tv/tuner/RecordStatus.h>
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#include <fmq/AidlMessageQueue.h>
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#include <math.h>
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#include <atomic>
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#include <set>
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#include <thread>
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#include "Demux.h"
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#include "Frontend.h"
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#include "Tuner.h"
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using namespace std;
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace tv {
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namespace tuner {
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using ::aidl::android::hardware::common::fmq::MQDescriptor;
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using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
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using ::android::AidlMessageQueue;
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using ::android::hardware::EventFlag;
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using DvrMQ = AidlMessageQueue<int8_t, SynchronizedReadWrite>;
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struct MediaEsMetaData {
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bool isAudio;
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int startIndex;
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int len;
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int pts;
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};
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class Demux;
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class Filter;
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class Frontend;
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class Tuner;
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class Dvr : public BnDvr {
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public:
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Dvr(DvrType type, uint32_t bufferSize, const std::shared_ptr<IDvrCallback>& cb,
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std::shared_ptr<Demux> demux);
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~Dvr();
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::ndk::ScopedAStatus getQueueDesc(
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MQDescriptor<int8_t, SynchronizedReadWrite>* out_queue) override;
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::ndk::ScopedAStatus configure(const DvrSettings& in_settings) override;
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::ndk::ScopedAStatus attachFilter(const std::shared_ptr<IFilter>& in_filter) override;
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::ndk::ScopedAStatus detachFilter(const std::shared_ptr<IFilter>& in_filter) override;
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::ndk::ScopedAStatus start() override;
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::ndk::ScopedAStatus stop() override;
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::ndk::ScopedAStatus flush() override;
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::ndk::ScopedAStatus close() override;
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binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
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/**
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* To create a DvrMQ and its Event Flag.
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*
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* Return false is any of the above processes fails.
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*/
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bool createDvrMQ();
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bool writeRecordFMQ(const std::vector<int8_t>& data);
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bool addPlaybackFilter(int64_t filterId, std::shared_ptr<IFilter> filter);
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bool removePlaybackFilter(int64_t filterId);
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bool readPlaybackFMQ(bool isVirtualFrontend, bool isRecording);
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bool processEsDataOnPlayback(bool isVirtualFrontend, bool isRecording);
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bool startFilterDispatcher(bool isVirtualFrontend, bool isRecording);
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EventFlag* getDvrEventFlag();
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DvrSettings getSettings() { return mDvrSettings; }
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private:
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// Demux service
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std::shared_ptr<Demux> mDemux;
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DvrType mType;
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uint32_t mBufferSize;
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std::shared_ptr<IDvrCallback> mCallback;
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std::map<int64_t, std::shared_ptr<IFilter>> mFilters;
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void deleteEventFlag();
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bool readDataFromMQ();
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void getMetaDataValue(int& index, int8_t* dataOutputBuffer, int& value);
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void maySendPlaybackStatusCallback();
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void maySendRecordStatusCallback();
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PlaybackStatus checkPlaybackStatusChange(uint32_t availableToWrite, uint32_t availableToRead,
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int64_t highThreshold, int64_t lowThreshold);
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RecordStatus checkRecordStatusChange(uint32_t availableToWrite, uint32_t availableToRead,
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int64_t highThreshold, int64_t lowThreshold);
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/**
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* A dispatcher to read and dispatch input data to all the started filters.
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* Each filter handler handles the data filtering/output writing/filterEvent updating.
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*/
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void startTpidFilter(vector<int8_t> data);
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void playbackThreadLoop();
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unique_ptr<DvrMQ> mDvrMQ;
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EventFlag* mDvrEventFlag;
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/**
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* Demux callbacks used on filter events or IO buffer status
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*/
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bool mDvrConfigured = false;
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DvrSettings mDvrSettings;
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// Thread handlers
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std::thread mDvrThread;
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// FMQ status local records
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PlaybackStatus mPlaybackStatus;
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RecordStatus mRecordStatus;
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/**
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* If a specific filter's writing loop is still running
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*/
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std::atomic<bool> mDvrThreadRunning;
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/**
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* Lock to protect writes to the FMQs
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*/
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std::mutex mWriteLock;
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/**
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* Lock to protect writes to the input status
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*/
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std::mutex mPlaybackStatusLock;
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std::mutex mRecordStatusLock;
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const bool DEBUG_DVR = false;
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};
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} // namespace tuner
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} // namespace tv
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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