IP PortfolioDatapath and DSPcompression
of_deflate_dec
DEFLATE / gzip / zlib decompressor
Maturity plannedTargets FPGA + ASICDifficulty HardPriority 2
Streaming DEFLATE decompressor with stored, fixed and dynamic Huffman blocks, 32 KiB history window, and gzip/zlib wrapper parsing with CRC-32/Adler-32 check.
Planned. This block is specified in the catalog with its interfaces and targets. No implementation exists yet; the skeleton command below generates a lint-clean shell with its ports and registers.
Interfaces
| Port | Direction | Kind | Width | Notes |
|---|---|---|---|---|
| ctrl | in/out | AXI4-Lite control bus | 32 | Control and status registers, including ID, VERSION and STATUS |
| irq | out | interrupt | 1 | Interrupt request |
| s_in | in | AXI4-Stream | 64 | |
| m_out | out | AXI4-Stream | 64 |
Standards
- IETF RFC 1951
- IETF RFC 1952
- IETF RFC 1950
More in compression
| ID | Block | Maturity |
|---|---|---|
| of_huffman_dec | Canonical Huffman decoder | planned |
| of_deflate_enc | DEFLATE / gzip compressor | planned |
| of_lz4_codec | LZ4 compressor and decompressor | planned |
| of_zstd_dec | Zstandard decompressor | planned |