PreComp utility
Current version: Precomp v0.3.8, lprepaq v1.3, paq8o8pre v2 (21.07.2008) -
Main site
21.07.2008 - Precomp v0.3.8
- Files larger than 2 GB supported.
- Support for SWF files without slow mode.
- Updated packJPG to inofficial version 2.4WIP4 which improves compression ratio for JPGs a bit.
- New switches -pdfbmp (see prepaq v2) and -progonly (recompress only progressive JPG files, useful to leave the other ones for PAQ).
- Speed up for decompression (30-150%).
- Speed up for slow and brute mode (up to 4 times faster).
- Dynamic temporary filenames, it is possible now to run multiple Precomp instances in the same directory.
- Error message if not enough space left on disk.
15.01.2008 - prepaq v2 (paq8o8pre v2)
- Added prepaq v2. Images in PDF files are now wrapped inside a BMP header to improve compression and speed.
08.11.2007 - prepaq (paq8o8pre)
- Added prepaq (paq8o8pre) by Jan Ondrus. This combines Precomp 0.3.7 and paq8o8 by Matt Mahoney.
05.11.2007 - Precomp v0.3.7, lprepaq v1.3 - JPG bugfix
- JPG detection improved to avoid passing invalid JPGs to packJPG resulting in a crash.
31.10.2007 - Precomp v0.3.7, lprepaq v1.3
- Precomp version is now shown if a PCF file was made with a different version.
- Added progressive JPG detection.
- Updated packJPG to version 2.3 which is 10% faster than version 2.2 and supports progressive JPG files.
- Switched compiler for both Precomp and lprepaq to MinGW g++.
- Combined lpaq6 by Matt Mahoney and Precomp v0.3.7 to lprepaq v1.3.
01.10.2007 - lprepaq v1.2
- Speeded up lprepaq compression speed slightly (around 10%).
29.09.2007 - lprepaq v1.2
- Added Precomp switches to lprepaq.
- Fixed lprepaq crashes.
22.08.2007 - Precomp v0.3.6, lprepaq v1.1
- Improved JPG handling for JPG files with multiple SOI markers.
- Combined lpaq1 by Matt Mahoney and Precomp v0.3.6 to lprepaq v1.1.
20.08.2007 - Precomp v0.3.5, lprepaq v1.0
- Fixed a bug in GIF handling that sometimes led to a crash (thanks to Stephan Busch).
- Combined lpaq1 by Matt Mahoney and Precomp v0.3.5 to lprepaq v1.0.
17.08.2007 - Precomp v0.3.4
- Fixed packJPG 2.2 DLL that crashed under Windows XP.
14.08.2007 - Precomp v0.3.4
- Updated packJPG to version 2.2 which is faster and compresses better than version 2.0.
- After compression, a summary of stream types detected is shown.
- Fixed a bug in the GIF routine that lead to a crash sometimes (thanks to Radek "Black_Fox" Liska).
16.07.2007 - Precomp v0.3.3
- Added JPG support using packJPG by Matthias Stirner.
- Added brute mode.
- Speeded up slow mode.
- Fixed ignore list that didn't work in v0.3.2.
20.06.2007 - Precomp v0.3.2
- Speeded up Precomp a lot (sometimes 10-20 times faster).
- Added slow mode.
- Added GIF compression.
- PNG files with multiple IDAT chunks are now handled correctly ("multiPNG").
- Fixed a rare bug that destroyed bit-to-bit-identity.
- Fixed some cases in which Precomp Comfort didn't wait for a keypress.
- Renamed Precomp.ini to Precomf.ini.
- Filename is now stored in lower case.
16.11.2006 - Precomp v0.3.1
- Added fast mode.
- Added GZip support.
- Added several parameters.
- Split to normal and comfort version.
- Penalty byte method added. Leads to better compression.
- Switch -d changed to -r (it is restoring/recompressing, not decompressing).
- Temporary files renamed to ~tempX.dat instead of tempX.dat.
- Several memory leaks fixed.
- PCF header changed.
11.09.2006 - Precomp v0.3
- Fastened up Precomp a lot.
- Overwrite check added.
06.09.2006 - Precomp v0.2
- Fastened up and cleaned the code a bit.
- Added stream statistics.
- Drag and drop support.
- Header for PCF files.
01.09.2006 - Precomp v0.1
- ZIP support
- Parameters -c and -m added