Writes NDArrays in the JPEG file format, which is a lossy compression format. More...

#include <NDFileJPEG.h>

Inheritance diagram for NDFileJPEG:

Public Member Functions
	NDFileJPEG (const char portName, int queueSize, int blockingCallbacks, const char NDArrayPort, int NDArrayAddr, int priority, int stackSize)
	Constructor for NDFileJPEG; all parameters are simply passed to NDPluginFile::NDPluginFile.

virtual asynStatus	openFile (const char fileName, NDFileOpenMode_t openMode, NDArray pArray)
	Opens a JPEG file.

virtual asynStatus	readFile (NDArray **pArray)
	Reads single NDArray from a JPEG file; NOT CURRENTLY IMPLEMENTED.

virtual asynStatus	writeFile (NDArray *pArray)
	Writes single NDArray to the JPEG file.

virtual asynStatus	closeFile ()
	Closes the JPEG file.

void	initDestination ()
	Initializes the destination file; should be private but called from C so must be public.

boolean	emptyOutputBuffer ()
	Empties the output buffer; should be private but called from C so must be public.

void	termDestination ()
	Terminates the destination file; should be private but called from C so must be public.

Public Member Functions inherited from NDPluginFile
	NDPluginFile (const char portName, int queueSize, int blockingCallbacks, const char NDArrayPort, int NDArrayAddr, int maxAddr, int maxBuffers, size_t maxMemory, int interfaceMask, int interruptMask, int asynFlags, int autoConnect, int priority, int stackSize, int maxThreads, bool compressionAware=false)
	Constructor for NDPluginFile; all parameters are simply passed to NDPluginDriver::NDPluginDriver.

virtual void	processCallbacks (NDArray *pArray)
	Callback function that is called by the NDArray driver with new NDArray data.

virtual asynStatus	writeInt32 (asynUser *pasynUser, epicsInt32 value)
	Called when asyn clients call pasynInt32->write().

virtual asynStatus	writeNDArray (asynUser pasynUser, void genericPointer)

Public Member Functions inherited from NDPluginDriver
	NDPluginDriver (const char portName, int queueSize, int blockingCallbacks, const char NDArrayPort, int NDArrayAddr, int maxAddr, int maxBuffers, size_t maxMemory, int interfaceMask, int interruptMask, int asynFlags, int autoConnect, int priority, int stackSize, int maxThreads, bool compressionAware=false)
	Constructor for NDPluginDriver; most parameters are simply passed to asynNDArrayDriver::asynNDArrayDriver.

	~NDPluginDriver ()

virtual asynStatus	writeFloat64 (asynUser *pasynUser, epicsFloat64 value)
	Called when asyn clients call pasynFloat64->write().

virtual asynStatus	writeOctet (asynUser pasynUser, const char value, size_t maxChars, size_t *nActual)
	Called when asyn clients call pasynOctet->write().

virtual asynStatus	readInt32Array (asynUser pasynUser, epicsInt32 value, size_t nElements, size_t *nIn)
	Called when asyn clients call pasynInt32Array->read().

virtual void	driverCallback (asynUser pasynUser, void genericPointer)
	Method that is called from the driver with a new NDArray.

virtual void	run (void)
	Starts the thread that receives NDArrays from the epicsMessageQueue.

virtual asynStatus	start (void)
	Starts the plugin threads.

void	sortingTask ()
	Method runs as a separate thread, periodically doing NDArray callbacks to downstream plugins.

Public Member Functions inherited from asynNDArrayDriver
	asynNDArrayDriver (const char *portName, int maxAddr, int maxBuffers, size_t maxMemory, int interfaceMask, int interruptMask, int asynFlags, int autoConnect, int priority, int stackSize)
	This is the constructor for the asynNDArrayDriver class.

virtual	~asynNDArrayDriver ()

virtual asynStatus	readGenericPointer (asynUser pasynUser, void genericPointer)
	This method copies an NDArray object from the asynNDArrayDriver to an NDArray pointer passed in by the caller.

virtual asynStatus	writeGenericPointer (asynUser pasynUser, void genericPointer)
	This method currently does nothing, but it should be implemented in this base class.

virtual asynStatus	setIntegerParam (int index, int value)
	Sets the value for an integer in the parameter library.

virtual asynStatus	setIntegerParam (int list, int index, int value)
	Sets the value for an integer in the parameter library.

virtual void	report (FILE *fp, int details)
	Report status of the driver.

virtual asynStatus	createFilePath (const char *path, int pathDepth)
	Function to create a directory path for a file.

virtual asynStatus	checkPath ()
	Checks whether the directory specified NDFilePath parameter exists.

virtual bool	checkPath (std::string &filePath)
	Checks whether the directory specified exists.

virtual asynStatus	createFileName (int maxChars, char *fullFileName)
	Build a file name from component parts.

virtual asynStatus	createFileName (int maxChars, char filePath, char fileName)
	Build a file name from component parts.

virtual asynStatus	readNDAttributesFile ()
	Create this driver's NDAttributeList (pAttributeList) by reading an XML file This clears any existing attributes from this drivers' NDAttributeList and then creates a new list based on the XML file.

virtual asynStatus	getAttributes (NDAttributeList *pAttributeList)
	Get the current values of attributes from this driver and appends them to an output attribute list.

virtual void	updateTimeStamps (NDArray *pArray)

asynStatus	incrementQueuedArrayCount ()

asynStatus	decrementQueuedArrayCount ()

int	getQueuedArrayCount ()

void	updateQueuedArrayCount ()

Protected Attributes
int	NDFileJPEGQuality

Protected Attributes inherited from NDPluginDriver
int	NDPluginDriverArrayPort

int	NDPluginDriverArrayAddr

int	NDPluginDriverPluginType

int	NDPluginDriverDroppedArrays

int	NDPluginDriverQueueSize

int	NDPluginDriverQueueFree

int	NDPluginDriverMaxThreads

int	NDPluginDriverNumThreads

int	NDPluginDriverSortMode

int	NDPluginDriverSortTime

int	NDPluginDriverSortSize

int	NDPluginDriverSortFree

int	NDPluginDriverDisorderedArrays

int	NDPluginDriverDroppedOutputArrays

int	NDPluginDriverEnableCallbacks

int	NDPluginDriverBlockingCallbacks

int	NDPluginDriverProcessPlugin

int	NDPluginDriverExecutionTime

int	NDPluginDriverMinCallbackTime

int	NDPluginDriverMaxByteRate

NDArray *	pPrevInputArray_

Protected Attributes inherited from asynNDArrayDriver
int	NDPortNameSelf

int	NDADCoreVersion

int	NDDriverVersion

int	ADManufacturer

int	ADModel

int	ADSerialNumber

int	ADSDKVersion

int	ADFirmwareVersion

int	ADAcquire

int	ADAcquireBusy

int	ADWaitForPlugins

int	NDArraySizeX

int	NDArraySizeY

int	NDArraySizeZ

int	NDArraySize

int	NDNDimensions

int	NDDimensions

int	NDDataType

int	NDColorMode

int	NDUniqueId

int	NDTimeStamp

int	NDEpicsTSSec

int	NDEpicsTSNsec

int	NDBayerPattern

int	NDCodec

int	NDCompressedSize

int	NDArrayCounter

int	NDFilePath

int	NDFilePathExists

int	NDFileName

int	NDFileNumber

int	NDFileTemplate

int	NDAutoIncrement

int	NDFullFileName

int	NDFileFormat

int	NDAutoSave

int	NDWriteFile

int	NDReadFile

int	NDFileWriteMode

int	NDFileWriteStatus

int	NDFileWriteMessage

int	NDFileNumCapture

int	NDFileNumCaptured

int	NDFileFreeCapture

int	NDFileCapture

int	NDFileDeleteDriverFile

int	NDFileLazyOpen

int	NDFileCreateDir

int	NDFileTempSuffix

int	NDAttributesFile

int	NDAttributesStatus

int	NDAttributesMacros

int	NDArrayData

int	NDArrayCallbacks

int	NDPoolMaxBuffers

int	NDPoolAllocBuffers

int	NDPoolPreAllocBuffers

int	NDPoolNumPreAllocBuffers

int	NDPoolFreeBuffers

int	NDPoolMaxMemory

int	NDPoolUsedMemory

int	NDPoolEmptyFreeList

int	NDPoolPollStats

int	NDNumQueuedArrays

class NDArray **	pArrays
	An array of NDArray pointers used to store data in the driver.

class NDAttributeList *	pAttributeList
	An NDAttributeList object used to obtain the current values of a set of attributes.

int	threadStackSize_

int	threadPriority_

Additional Inherited Members
Public Attributes inherited from NDPluginFile
int	supportsMultipleArrays
	Derived classes must set this flag to 0/1 if they cannot/can write multiple NDArrays to a single file.

Public Attributes inherited from asynNDArrayDriver
class NDArrayPool *	pNDArrayPool
	An NDArrayPool pointer that is initialized to pNDArrayPoolPvt_ in the constructor.

Protected Member Functions inherited from NDPluginDriver
virtual void	beginProcessCallbacks (NDArray *pArray)
	Method that is normally called at the beginning of the processCallbacks method in derived classes.

virtual asynStatus	endProcessCallbacks (NDArray *pArray, bool copyArray=false, bool readAttributes=true)
	Method that is normally called at the end of the processCallbacks()) method in derived classes.

virtual asynStatus	connectToArrayPort (void)
	Connect this plugin to an NDArray port driver; disconnect from any existing driver first, register for callbacks if enabled.

virtual asynStatus	setArrayInterrupt (int connect)
	Register or unregister to receive asynGenericPointer (NDArray) callbacks from the driver.

bool	throttled (NDArray *pArray)

Detailed Description

Writes NDArrays in the JPEG file format, which is a lossy compression format.

This plugin was developed using the libjpeg library to write the file.

Constructor & Destructor Documentation

◆ NDFileJPEG()

NDFileJPEG::NDFileJPEG	(	const char *	portName,
		int	queueSize,
		int	blockingCallbacks,
		const char *	NDArrayPort,
		int	NDArrayAddr,
		int	priority,
		int	stackSize
	)

Constructor for NDFileJPEG; all parameters are simply passed to NDPluginFile::NDPluginFile.

Parameters

[in]	portName	The name of the asyn port driver to be created.
[in]	queueSize	The number of NDArrays that the input queue for this plugin can hold when NDPluginDriverBlockingCallbacks=0. Larger queues can decrease the number of dropped arrays, at the expense of more NDArray buffers being allocated from the underlying driver's NDArrayPool.
[in]	blockingCallbacks	Initial setting for the NDPluginDriverBlockingCallbacks flag. 0=callbacks are queued and executed by the callback thread; 1 callbacks execute in the thread of the driver doing the callbacks.
[in]	NDArrayPort	Name of asyn port driver for initial source of NDArray callbacks.
[in]	NDArrayAddr	asyn port driver address for initial source of NDArray callbacks.
[in]	priority	The thread priority for the asyn port driver thread if ASYN_CANBLOCK is set in asynFlags.
[in]	stackSize	The stack size for the asyn port driver thread if ASYN_CANBLOCK is set in asynFlags.

Member Function Documentation

◆ closeFile()

asynStatus NDFileJPEG::closeFile ( )

virtual

Closes the JPEG file.

Implements NDPluginFile.

◆ emptyOutputBuffer()

boolean NDFileJPEG::emptyOutputBuffer ( )

Empties the output buffer; should be private but called from C so must be public.

◆ initDestination()

void NDFileJPEG::initDestination ( )

Initializes the destination file; should be private but called from C so must be public.

◆ openFile()

asynStatus NDFileJPEG::openFile	(	const char *	fileName,
		NDFileOpenMode_t	openMode,
		NDArray *	pArray
	)

virtual

Opens a JPEG file.

Parameters

[in]	fileName	The name of the file to open.
[in]	openMode	Mask defining how the file should be opened; bits are NDFileModeRead, NDFileModeWrite, NDFileModeAppend, NDFileModeMultiple
[in]	pArray	A pointer to an NDArray; this is used to determine the array and attribute properties.

Implements NDPluginFile.

◆ readFile()

asynStatus NDFileJPEG::readFile ( NDArray ** pArray )

virtual

Reads single NDArray from a JPEG file; NOT CURRENTLY IMPLEMENTED.

Parameters

[in] pArray Pointer to the NDArray to be read

Implements NDPluginFile.

◆ termDestination()

void NDFileJPEG::termDestination ( )

Terminates the destination file; should be private but called from C so must be public.

◆ writeFile()

asynStatus NDFileJPEG::writeFile ( NDArray * pArray )

virtual

Writes single NDArray to the JPEG file.

Parameters

[in] pArray Pointer to the NDArray to be written

Implements NDPluginFile.

Member Data Documentation

◆ NDFileJPEGQuality

int NDFileJPEG::NDFileJPEGQuality

protected

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

/home/runner/work/areaDetector/areaDetector/ADCore/ADApp/pluginSrc/NDFileJPEG.h
/home/runner/work/areaDetector/areaDetector/ADCore/ADApp/pluginSrc/NDFileJPEG.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ NDFileJPEG()

Member Function Documentation

◆ closeFile()

◆ emptyOutputBuffer()

◆ initDestination()

◆ openFile()

◆ readFile()

◆ termDestination()

◆ writeFile()

Member Data Documentation

◆ NDFileJPEGQuality