OrderedCacheOfFiles Class Reference

#include <OrderedCacheOfFiles.h>

Collaboration diagram for OrderedCacheOfFiles:

Classes
struct	CacheIteratorState
struct	Video
struct	videoPath
struct	videoTS

Public Member Functions
	OrderedCacheOfFiles (std::string &video_folder, uint32_t initial_batch_size=1440, uint32_t _lowerWaterMark=1441, uint32_t _upperWaterMark=2880)
	~OrderedCacheOfFiles ()
void	updateBatchSize (uint32_t _batchSize)
void	cleanCacheOnSeperateThread (bool flag)
void	deleteLostEntry (std::string &filePath)
uint64_t	getFileDuration (std::string &filename)
std::string	getFileAt (uint64_t timestamp, bool direction)
bool	isTimeStampInFile (std::string &filename, uint64_t timestamp)
std::string	getNextFileAfter (std::string &currentFile, bool direction)
std::vector< boost::filesystem::path >	parseAndSortDateDir (const std::string &rootDir)
std::vector< boost::filesystem::path >	parseAndSortHourDir (const std::string &rootDir)
std::vector< boost::filesystem::path >	parseAndSortMp4Files (const std::string &rootDir)
bool	parseFiles (uint64_t start_ts, bool direction, bool includeFloorFile=false, bool disableBatchSizeCheck=false, uint64_t skipTS=0)
bool	getRandomSeekFile (uint64_t ts, bool direction, uint64_t &skipMsecs, std::string &fileName)
bool	getFileFromCache (uint64_t timestamp, bool direction, std::string &fileName)
size_t	getCacheSize ()
bool	fetchAndUpdateFromDisk (std::string videoFile, uint64_t &start_ts, uint64_t &end_ts)
bool	fetchFromCache (std::string &videoFile, uint64_t &start_ts, uint64_t &end_ts)
void	readVideoStartEnd (std::string &filePath, uint64_t &start_ts, uint64_t &end_ts)
void	clearCache ()
bool	refreshCache ()
std::string	getLastVideoInCache ()
void	updateCache (std::string &filePath, uint64_t &start_ts, uint64_t &end_ts)
std::map< std::string, std::pair< uint64_t, uint64_t > >	getSnapShot ()
bool	probe (boost::filesystem::path dirPath, std::string &videoName)
bool	getPreviousAndNextFile (std::string videoPath, std::string &previousFile, std::string &nextFile)

Private Types
typedef boost::multi_index_container< Video, bmi::indexed_by< bmi::ordered_unique< bmi::tag< videoPath >, bmi::member< Video, std::string, &Video::path > >, bmi::ordered_non_unique< bmi::tag< videoTS >, bmi::member< Video, uint64_t, &Video::start_ts > > > >	VideoCache

Private Member Functions
bool	filePatternCheck (const fs::path &path)
bool	datePatternCheck (const boost::filesystem::path &path)
bool	hourPatternCheck (const boost::filesystem::path &path)
void	insertInVideoCache (Video vid)
void	retireOldFiles (uint64_t startTSofRelevantFile)
void	dropFarthestFromTS (uint64_t startTS)

Private Attributes
bool	lastKnownPlaybackDir = true
boost::mutex	m_mutex
boost::shared_ptr< boost::thread >	mThread = nullptr
int	cacheSize = 1440
int	batchSize = 1440
std::string	rootDir = ""
uint32_t	lowerWaterMark
uint32_t	upperWaterMark
bool	cleanCacheOnMainThread = true
struct OrderedCacheOfFiles::CacheIteratorState	cacheIteratorState
VideoCache	videoCache
VideoCache::index< videoTS >::type &	videoCacheStartTSIndex = videoCache.get<videoTS>()

Member Typedef Documentation

VideoCache

boost::multi_index_container< Video, bmi::indexed_by< bmi::ordered_unique<bmi::tag<videoPath>, bmi::member<Video, std::string, &Video::path> >, bmi::ordered_non_unique<bmi::tag<videoTS>, bmi::member<Video, uint64_t, &Video::start_ts> > > > OrderedCacheOfFiles::VideoCache

private

Constructor & Destructor Documentation

OrderedCacheOfFiles()

OrderedCacheOfFiles::OrderedCacheOfFiles	(	std::string &	video_folder,
		uint32_t	initial_batch_size = 1440,
		uint32_t	_lowerWaterMark = 1441,
		uint32_t	_upperWaterMark = 2880 )

~OrderedCacheOfFiles()

OrderedCacheOfFiles::~OrderedCacheOfFiles ( )

inline

Member Function Documentation

cleanCacheOnSeperateThread()

void OrderedCacheOfFiles::cleanCacheOnSeperateThread ( bool flag )

inline

clearCache()

void OrderedCacheOfFiles::clearCache

(

)

datePatternCheck()

bool OrderedCacheOfFiles::datePatternCheck ( const boost::filesystem::path & path )

private

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deleteLostEntry()

void OrderedCacheOfFiles::deleteLostEntry

(

std::string &

filePath

)

dropFarthestFromTS()

void OrderedCacheOfFiles::dropFarthestFromTS ( uint64_t startTS )

private

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fetchAndUpdateFromDisk()

bool OrderedCacheOfFiles::fetchAndUpdateFromDisk	(	std::string	videoFile,
		uint64_t &	start_ts,
		uint64_t &	end_ts )

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fetchFromCache()

bool OrderedCacheOfFiles::fetchFromCache	(	std::string &	videoFile,
		uint64_t &	start_ts,
		uint64_t &	end_ts )

filePatternCheck()

bool OrderedCacheOfFiles::filePatternCheck ( const fs::path & path )

private

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getCacheSize()

size_t OrderedCacheOfFiles::getCacheSize ( )

inline

getFileAt()

std::string OrderedCacheOfFiles::getFileAt	(	uint64_t	timestamp,
		bool	direction )

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getFileDuration()

uint64_t OrderedCacheOfFiles::getFileDuration

(

std::string &

filename

)

getFileFromCache()

bool OrderedCacheOfFiles::getFileFromCache	(	uint64_t	timestamp,
		bool	direction,
		std::string &	fileName )

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getLastVideoInCache()

std::string OrderedCacheOfFiles::getLastVideoInCache ( )

inline

getNextFileAfter()

std::string OrderedCacheOfFiles::getNextFileAfter	(	std::string &	currentFile,
		bool	direction )

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getPreviousAndNextFile()

bool OrderedCacheOfFiles::getPreviousAndNextFile	(	std::string	videoPath,
		std::string &	previousFile,
		std::string &	nextFile )

getRandomSeekFile()

bool OrderedCacheOfFiles::getRandomSeekFile	(	uint64_t	ts,
		bool	direction,
		uint64_t &	skipMsecs,
		std::string &	fileName )

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getSnapShot()

std::map< std::string, std::pair< uint64_t, uint64_t > > OrderedCacheOfFiles::getSnapShot

(

)

hourPatternCheck()

bool OrderedCacheOfFiles::hourPatternCheck ( const boost::filesystem::path & path )

private

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insertInVideoCache()

void OrderedCacheOfFiles::insertInVideoCache ( Video vid )

private

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isTimeStampInFile()

bool OrderedCacheOfFiles::isTimeStampInFile	(	std::string &	filename,
		uint64_t	timestamp )

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parseAndSortDateDir()

std::vector< boost::filesystem::path > OrderedCacheOfFiles::parseAndSortDateDir

(

const std::string &

rootDir

)

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parseAndSortHourDir()

std::vector< boost::filesystem::path > OrderedCacheOfFiles::parseAndSortHourDir

(

const std::string &

rootDir

)

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parseAndSortMp4Files()

std::vector< boost::filesystem::path > OrderedCacheOfFiles::parseAndSortMp4Files

(

const std::string &

rootDir

)

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parseFiles()

bool OrderedCacheOfFiles::parseFiles	(	uint64_t	start_ts,
		bool	direction,
		bool	includeFloorFile = false,
		bool	disableBatchSizeCheck = false,
		uint64_t	skipTS = 0 )

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probe()

bool OrderedCacheOfFiles::probe	(	boost::filesystem::path	dirPath,
		std::string &	videoName )

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readVideoStartEnd()

void OrderedCacheOfFiles::readVideoStartEnd	(	std::string &	filePath,
		uint64_t &	start_ts,
		uint64_t &	end_ts )

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refreshCache()

bool OrderedCacheOfFiles::refreshCache

(

)

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retireOldFiles()

void OrderedCacheOfFiles::retireOldFiles ( uint64_t startTSofRelevantFile )

private

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updateBatchSize()

void OrderedCacheOfFiles::updateBatchSize ( uint32_t _batchSize )

inline

updateCache()

void OrderedCacheOfFiles::updateCache	(	std::string &	filePath,
		uint64_t &	start_ts,
		uint64_t &	end_ts )

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Member Data Documentation

batchSize

int OrderedCacheOfFiles::batchSize = 1440

private

cacheIteratorState

struct OrderedCacheOfFiles::CacheIteratorState OrderedCacheOfFiles::cacheIteratorState

private

cacheSize

int OrderedCacheOfFiles::cacheSize = 1440

private

cleanCacheOnMainThread

bool OrderedCacheOfFiles::cleanCacheOnMainThread = true

private

lastKnownPlaybackDir

bool OrderedCacheOfFiles::lastKnownPlaybackDir = true

private

lowerWaterMark

uint32_t OrderedCacheOfFiles::lowerWaterMark

private

m_mutex

boost::mutex OrderedCacheOfFiles::m_mutex

private

mThread

boost::shared_ptr<boost::thread> OrderedCacheOfFiles::mThread = nullptr

private

rootDir

std::string OrderedCacheOfFiles::rootDir = ""

private

upperWaterMark

uint32_t OrderedCacheOfFiles::upperWaterMark

private

videoCache

VideoCache OrderedCacheOfFiles::videoCache

private

videoCacheStartTSIndex

VideoCache::index<videoTS>::type& OrderedCacheOfFiles::videoCacheStartTSIndex = videoCache.get<videoTS>()

private

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The documentation for this class was generated from the following files:

• base/include/OrderedCacheOfFiles.h
• base/src/OrderedCacheOfFiles.cpp