FFTLIB Release Notes
Version: 02.05.00.00
Contents
- Introduction
- Licensing
- Getting Started
- Documentation
- What's New
- Upgrade and Compatibility Information
- Device Support
- Validation Information
- Fixed Issues
- Deprecation
- Known Issues
- Technical Support
- Package Versioning
Introduction
The FFTLIB package consists of the Texas Instruments optimized kernels for FFT.
Licensing
The licensing information of this library and a complete manifest along with export control information is detailed here [HTML].
Getting Started
The FFTLIB User Guide [USER_GUIDE] provides the documentation and references necessary to begin development on TI's platforms.
Documentation
Refer to following documentation for further details:
| FFTLIB User Guide | Build instructions, API Guide | [USER_GUIDE] |
| Test Reports | Misra C reports, conformance test reports, TI platform test reports | [TEST_RESULTS] |
| Software Manifest | Licenses, terms of use | [HTML] |
What's New
Here are a few of the new features supported in this release:
FFT
- Support for 16-bit and 32-bit signed complex input/output
- Support for real and imaginary parts of data to be in either interleaved or non-interleaved format. Optimal performance assumes interleaved data format
- Support for FFT sizes from 16 through 8192. FFT sizes are assumed to be powers of 2
- Support for batch processing of multiple FFTs in one kernel call. For optimal performance, input data and output data for the entire batch, and twiddle factor data are assumed to fit in L2 memory
- FFTLIB_FFT_dftSmall_ixX_cxX_oxX
- FFTLIB_FFT_dftLarge_ixX_cxX_oxX
- FFTLIB_FFT_highRadixDecompositions_ixX_cxX_oxX
- FFTLIB_FFT_fft_ixX_cxX_oxX
- FFTLIB_fft1dBatched_i16sc_c16sc_o16sc [C7x only]
- FFTLIB_fft1dBatched_i32fc_c32fc_o32fc [C7x only]
- FFTLIB_fft1d_i16sc_c16sc_o16sc [C7x only]
- FFTLIB_fft1d_i32fc_c32fc_o32fc [C7x only]
- Utility functions (with suffixes _getSizes) to compute sizes required for data and twiddle factor buffers
- Utility functions (with suffixes _twGen) to compute relevant DFT matrices and twiddle factors
C7x+MMA DFT building blocks
- 16-bit, interleaved/non-interleaved, any FFT_SIZE, any BATCH_SIZE: works
- 32-bit, interleaved/non-interleaved, any FFT_SIZE, any BATCH_SIZE: works
- 16-bit, interleaved, 64 < FFT_SIZE < 8192, BATCH_SIZE = 1,2,4,8,16,32,64: works
- 32-bit, interleaved, 32 < FFT_SIZE < 8192, BATCH_SIZE = 1,2,4,8,16,32,64: works
Upgrade and Compatibility Information
| File | Change description | User application change required | User application recompile required |
Device Support
| SoC | Host (OS) | Target (OS) | Test Platform |
| J7AEP, J7ES C7x, MMA | No OS | No OS | EVM |
Validation Information
This release was built and validated using the following tools:
Build Tools (NOT included in FFTLIB):
- C7x CGT C7000-CGT-3.0.0 STS
Fixed Issues
Deprecation
Known Issues
-
None
Technical Support
For technical support, please post your questions on TI E2E Forum for Automotive ADAS SoCs.
For additional assistance, contact local TI Field Application Engineer
Package Versioning
Each package version is composed of 4 period-delimited numbers - represented here by the letters M, m, p and b [M.m.p.b]. The table below provides a descriptive reference regarding package version numbering.
| Digit | Meaning | Description |
|---|---|---|
| 1 (M=Major) | Major revision | Incremented when the new version is substantially different from the previous For example, a new module added or an existing module's algorithm significantly altered. |
| 2 (m=minor) | Minor revision | Incremented when the new version has changed but not in a major way. For example, some minor changes in the API or feature set. |
| 3 (p=patch) | Patch number | Incremented for all other source code changes. This include any packaging support code. |
| 4 (b=build) | Build number | Incremented for each release delivery to CM. Reset for any change to M, m or p |
Copyright 2018, Texas Instruments Incorporated