Module compression 

Compression level conversion utilities.

This module provides unified conversion from the user-friendly compression level scale (1-9) to codec-specific compression level types.

Level Mapping

User levels follow a consistent scale:

• 1-3: Fast compression (lower CPU usage, larger files)
• 6: Default compression (balanced)
• 7-9: Best compression (higher CPU usage, smaller files)

Each codec maps these levels to its own internal scale.

Enums

CompressionLevel

Unified compression level type.

Functions

compression_level_to_bzip2

Converts user compression level (1-9) to bzip2 compression level.

compression_level_to_flate2

Converts user compression level (1-9) to flate2 compression level.

compression_level_to_xz

Converts user compression level (1-9) to xz compression level.

compression_level_to_zstd

Converts user compression level (1-9) to zstd compression level.

convert_compression_level

Converts compression codec and level to the appropriate compression type.