areaDetector  3-12-1
EPICS areaDetector framework
Public Member Functions | Protected Attributes | List of all members
URLDriver Class Reference

URL driver; reads images from URLs, such as Web cameras and Axis video servers, but also files, etc. More...

Inheritance diagram for URLDriver:
ADDriver asynNDArrayDriver

Public Member Functions

 URLDriver (const char *portName, int maxBuffers, size_t maxMemory, int priority, int stackSize)
 Constructor for URLDriver; most parameters are simply passed to ADDriver::ADDriver. More...
 
virtual asynStatus writeInt32 (asynUser *pasynUser, epicsInt32 value)
 Called when asyn clients call pasynInt32->write(). More...
 
virtual void report (FILE *fp, int details)
 Report status of the driver. More...
 
void URLTask ()
 Should be private, but gets called from C, so must be public. More...
 
- Public Member Functions inherited from ADDriver
 ADDriver (const char *portName, int maxAddr, int numParams, int maxBuffers, size_t maxMemory, int interfaceMask, int interruptMask, int asynFlags, int autoConnect, int priority, int stackSize)
 All of the arguments are simply passed to the constructor for the asynNDArrayDriver base class, except numParams. More...
 
virtual asynStatus connect (asynUser *pasynUser)
 Connects driver to device; This method is called when the driver's pasynCommon->connect() function is called. More...
 
virtual void setShutter (int open)
 Set the shutter position. More...
 
- 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. More...
 
virtual ~asynNDArrayDriver ()
 
virtual asynStatus writeOctet (asynUser *pasynUser, const char *value, size_t maxChars, size_t *nActual)
 Called when asyn clients call pasynOctet->write(). More...
 
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. More...
 
virtual asynStatus writeGenericPointer (asynUser *pasynUser, void *genericPointer)
 This method currently does nothing, but it should be implemented in this base class. More...
 
virtual asynStatus setIntegerParam (int index, int value)
 Sets the value for an integer in the parameter library. More...
 
virtual asynStatus setIntegerParam (int list, int index, int value)
 Sets the value for an integer in the parameter library. More...
 
virtual asynStatus readInt32 (asynUser *pasynUser, epicsInt32 *value)
 
virtual asynStatus readFloat64 (asynUser *pasynUser, epicsFloat64 *value)
 
virtual asynStatus createFilePath (const char *path, int pathDepth)
 Function to create a directory path for a file. More...
 
virtual asynStatus checkPath ()
 Checks whether the directory specified NDFilePath parameter exists. More...
 
virtual bool checkPath (std::string &filePath)
 Checks whether the directory specified exists. More...
 
virtual asynStatus createFileName (int maxChars, char *fullFileName)
 Build a file name from component parts. More...
 
virtual asynStatus createFileName (int maxChars, char *filePath, char *fileName)
 Build a file name from component parts. More...
 
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. More...
 
virtual asynStatus getAttributes (NDAttributeList *pAttributeList)
 Get the current values of attributes from this driver and appends them to an output attribute list. More...
 
asynStatus incrementQueuedArrayCount ()
 
asynStatus decrementQueuedArrayCount ()
 
int getQueuedArrayCount ()
 
void updateQueuedArrayCount ()
 

Protected Attributes

int URLName
 
- Protected Attributes inherited from ADDriver
int ADGain
 
int ADBinX
 
int ADBinY
 
int ADMinX
 
int ADMinY
 
int ADSizeX
 
int ADSizeY
 
int ADMaxSizeX
 
int ADMaxSizeY
 
int ADReverseX
 
int ADReverseY
 
int ADFrameType
 
int ADImageMode
 
int ADNumExposures
 
int ADNumExposuresCounter
 
int ADNumImages
 
int ADNumImagesCounter
 
int ADAcquireTime
 
int ADAcquirePeriod
 
int ADTimeRemaining
 
int ADStatus
 
int ADTriggerMode
 
int ADShutterControl
 
int ADShutterControlEPICS
 
int ADShutterStatus
 
int ADShutterMode
 
int ADShutterOpenDelay
 
int ADShutterCloseDelay
 
int ADTemperature
 
int ADTemperatureActual
 
int ADReadStatus
 
int ADStatusMessage
 
int ADStringToServer
 
int ADStringFromServer
 
bool deviceIsReachable
 
- 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 NDFileCapture
 
int NDFileDeleteDriverFile
 
int NDFileLazyOpen
 
int NDFileCreateDir
 
int NDFileTempSuffix
 
int NDAttributesFile
 
int NDAttributesStatus
 
int NDAttributesMacros
 
int NDArrayData
 
int NDArrayCallbacks
 
int NDPoolMaxBuffers
 
int NDPoolAllocBuffers
 
int NDPoolFreeBuffers
 
int NDPoolMaxMemory
 
int NDPoolUsedMemory
 
int NDPoolEmptyFreeList
 
int NDNumQueuedArrays
 
class NDArray ** pArrays
 An array of NDArray pointers used to store data in the driver. More...
 
class NDAttributeListpAttributeList
 An NDAttributeList object used to obtain the current values of a set of attributes. More...
 
int threadStackSize_
 
int threadPriority_
 

Additional Inherited Members

- Public Attributes inherited from asynNDArrayDriver
class NDArrayPoolpNDArrayPool
 An NDArrayPool pointer that is initialized to pNDArrayPoolPvt_ in the constructor. More...
 

Detailed Description

URL driver; reads images from URLs, such as Web cameras and Axis video servers, but also files, etc.

Constructor & Destructor Documentation

◆ URLDriver()

URLDriver::URLDriver ( const char *  portName,
int  maxBuffers,
size_t  maxMemory,
int  priority,
int  stackSize 
)

Constructor for URLDriver; most parameters are simply passed to ADDriver::ADDriver.

After calling the base class constructor this method creates a thread to read the URL images, and sets reasonable default values for parameters defined in this class, asynNDArrayDriver and ADDriver.

Parameters
[in]portNameThe name of the asyn port driver to be created.
[in]maxBuffersThe maximum number of NDArray buffers that the NDArrayPool for this driver is allowed to allocate. Set this to -1 to allow an unlimited number of buffers.
[in]maxMemoryThe maximum amount of memory that the NDArrayPool for this driver is allowed to allocate. Set this to -1 to allow an unlimited amount of memory.
[in]priorityThe thread priority for the asyn port driver thread if ASYN_CANBLOCK is set in asynFlags.
[in]stackSizeThe stack size for the asyn port driver thread if ASYN_CANBLOCK is set in asynFlags.

Member Function Documentation

◆ report()

void URLDriver::report ( FILE *  fp,
int  details 
)
virtual

Report status of the driver.

Prints details about the driver if details>0. It then calls the ADDriver::report() method.

Parameters
[in]fpFile pointed passed by caller where the output is written to.
[in]detailsIf >0 then driver details are printed.

Reimplemented from asynNDArrayDriver.

◆ URLTask()

void URLDriver::URLTask ( )

Should be private, but gets called from C, so must be public.

This thread calls computeImage to compute new image data and does the callbacks to send it to higher layers.

It implements the logic for single, multiple or continuous acquisition.

◆ writeInt32()

asynStatus URLDriver::writeInt32 ( asynUser *  pasynUser,
epicsInt32  value 
)
virtual

Called when asyn clients call pasynInt32->write().

This function performs actions for some parameters, including ADAcquire, ADColorMode, etc. For all parameters it sets the value in the parameter library and calls any registered callbacks..

Parameters
[in]pasynUserpasynUser structure that encodes the reason and address.
[in]valueValue to write.

Reimplemented from ADDriver.

Member Data Documentation

◆ URLName

int URLDriver::URLName
protected

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