Vitis DSP Library¶
Vitis DSP library provides implementation of different L1/L2/L3 primitives for digital signal processing. Current version only provides implementation of Discrete Fourier Transform using Fast Fourier Transform algorithm for acceleration on Xilinx FPGAs. The Library is planned to provide three types of implementations namely L1 primitives, L2 kernels and L3 software APIs. Those implementations are organized in their corresponding directories L1, L2 and L3. The L1 primitives can be leveraged by developers working on harware design implementation or designing hardware kernels for acceleration. L1 primitives are partitcularly suitable for hardware savy designers. The L2 kernels are HLS-based predesigned kernels that can be directly used for FPGA acceleration of different applications on integration with Xilinx Runtime (XRT). The L3 provides software APIs in C, C++ and Python which allows software developers to offload FFT calculation to FPGAs for acceleration. Before an FGPA can perform the FFT computation. The FPGA needs to be configured with a particular image called an Overlay.
Since all the kernel code is developed with the permissive Apache 2.0 license, advanced users can easily tailor, optimize or combine them for their own needs. Demos and usage examples of different level implementations are also provided for reference.
Note: Current release of the Vitis FFT only provides L1 primitives.