Intel® Integrated Performance Primitives (Intel® IPP) library provides threading layer (TL) functions for image processing. Intel IPP TL functions are visual examples of external threading for Intel IPP functions. Taking advantage of multithreaded execution and tile processing, Intel IPP TL functions enable you to overcome 32-bit size limitations.

TL functions are provided as:

Pre-built binaries:
Header files have the
_tl
suffix and can be found in:
<
ipp directory
>/include
Library files for use with Intel® OpenMP have the
_tl_omp
suffix and can be found in:
<
ipp directory
>/lib/<
arch
>/tl/openmp
Library files for use with Intel® oneTBB have the
_tl_tbb
suffix and can be found in:
<
ipp directory
>/lib/<
arch
>/tl/tbb
Source code samples:
the source code and corresponding header files are available in the
components_and_examples_<
os
>.zip
archive inside the
<
ipp directory
>/components
subdirectory. For more information about the archive contents and source code building instructions, refer to Finding Intel® IPP TL Source Code Files and Building Intel® IPP TL Libraries from Source Code, respectively.

The API of TL functions is similar to the API of other Intel IPP functions and has only slight differences. You can distinguish Intel IPP TL functions by the

_LT

or

_T

suffix in the function name, for example,

ippiAdd_8u_C1RSfs_LT

. Intel IPP TL functions are implemented as wrappers over Intel IPP functions by using tiling and multithreading with OpenMP* or the Intel® Threading Building Blocks. For implementation details, please see the corresponding source code files.