Auxiliary objects¶

These objects are used during graph definition to configure event types and processor nodes.

Data types¶

DataTypes objects are used to specify the numeric data types used for timestamp and related event fields.

libtcspc.DataTypes

Set of integer types used by events and processors that are parameterised by data types.

Parameters¶

Various settings of processing nodes and other auxiliary objects can be left parameterized in the graph, so that the compiled graph can be reused with different values for those settings, supplied when creating the execution context. The Param object serves as a placeholder for parameterized values.

libtcspc.Param

Typed placeholder for a run-time parameter of a processing graph.

Access tags¶

Some processing nodes support direct interaction at run time. This is used, for example, to retrieve results from nodes that collect statistics, or to control stream behavior such as buffering. To enable such access, an AccessTag is attached to the node during graph definition; at execution time, access to the node can be obtained using the same tag.

libtcspc.AccessTag

Tag attached to _Accessible objects.

Acquisition readers¶

Readers that supply data to the Acquire processor by wrapping pull-style device APIs.

`libtcspc.AcquisitionReader`	Base class for built-in C++-side acquisition data sources usable with `Acquire`.
`libtcspc.NullReader`	Acquisition reader that immediately signals end of stream.
`libtcspc.StuckReader`	Acquisition reader that waits indefinitely without producing data.

Bucket sources¶

Allocation strategies for bucket instances used by processors that produce bulk data.

`libtcspc.BucketSource`	Base class for sources of `bucket` storage used by stream-processing graphs.
`libtcspc.NewDeleteBucketSource`	Bucket source that allocates fresh storage for each bucket using `new[]`/`delete[]`.
`libtcspc.RecyclingBucketSource`	Bucket source that reuses storage from destroyed buckets.

Input streams¶

Inputs to source processor nodes such as ReadBinaryStream.

`libtcspc.InputStream`	Base class for binary input streams used by `ReadBinaryStream`.
`libtcspc.BinaryFileInputStream`	Binary input stream that reads from a file on disk.