Na bijna zes jaar stilte is er onlangs weer een nieuwe versie van de Free Lossless Audio Codec, oftewel FLAC, verschenen. Dit geluidsbestandsformaat slaat data op, zonder dat hierbij informatie verloren gaat, zoals dat bijvoorbeeld wel het geval is bij mp3, Ogg Vorbis en Opus. FLAC is beschikbaar voor diverse besturingssystemen en heeft meestal een extern programma nodig, dat als gebruikersinterface dient. In Windows kan dat bijvoorbeeld met ExactAudioCopy en foobar2000. Hoewel er een lange tijd verstreken is, laat het changelog geen grote veranderingen zien.
General:FLAC format:
- Move development to Xiph.org git repository.
- The --sector-align option of flac has been deprecated and may not exist in future versions. shntool provides similar functionality.
- Support for the RF64 and Wave64 formats in flac (see below).
- Better handling of cuesheets with non-CD-DA sample rates.
- The --ignore-chunk-sizes option has been added to the flac command line tool.
Ogg FLAC format:
- (none)
flac:
- (none)
metaflac:
- Added support for encoding from and decoding to the RF64 format, and a new corresponding option --force-rf64-format. (SF #1762502). --keep-foreign-metadata is also supported.
- Added support for encoding from and decoding to the Sony Wave64 format, and a new corresponding option --force-wave64-format. (SF #1769582). --keep-foreign-metadata is also supported.
- Added new options --preserve-modtime and --no-preserve-modtime to specify whether or not output files should copy the timestamp and permissions from their input files. The default is --preserve-modtime as in previous versions. (SF #1805428).
- Allow MM:SS:FF and MM:SS.SS time formats in non-CD-DA cuesheets. (SF #1947353, SF #2182432)
- The --sector-align option of flac has been deprecated and may not exist in future versions. shntool provides similar functionality. (SF #1805946)
- Improved error message when user attempts to decode a non-FLAC file (SF #2222789).
- Fix bug where flac was disallowing use of --replay-gain when encoding from stdin (SF #1840124).
- Fix bug with fractional seconds on some locales (SF #1815517, SF #1858012).
- Read and write appropriate channel masks for 6.1 and 7.1 surround input WAV files. Documentation was also updated.
- Correct Wave64 GUIDs.
- Support 56kHz to 192kHz gain analysis (patch from Earl Chew)
- Add ability to handle utf8 filenames on Windows (large set of patches from Janne Hyvärinen)
plugins:
- Allow MM:SS:FF and MM:SS.SS time formats in non-CD-DA cuesheets. (SF #1947353, SF #2182432)
build system:
- Minor updates for XMMS plugin.
- Winamp2 plugin was dropped because Nullsoft has provided native FLAC support since 2006.
documentation:
- Fixes for autotools (including SF #1859664).
- Fixes for MinGW (including SF #2000973, SF #2209829).
- Fixes for gcc (including SF #1834168, SF #2002481).
- Fixes for Sun Studio/Forte (SF #1701960).
- Fixes for windows builds (including SF #1676822, SF #1756624, SF #1809863, SF #1911149).
- Fixes for FreeBSD and OpenBSD.
- Compile with GNU gcc _FORTIFY_SOURCE=2 and stack protection where those features are detected.
- Enable a bunch of GCC compiler warnings and fix code that generates warnings.
libraries:
- Document --ignore-chunk-sizes and --apply-replaygain-which-is-not-lossless option for flac.
Interface changes:
- libFLAC encoder was defaulting to level 0 compression instead of 5 (SF #1816825).
- Fix bug in bitreader handling of read callback returning a short count (SF #2490454).
- Improve decoder's ability to distinguish between a FLAC sync code and an MPEG one (SF #2491433).
- libFLAC:
- Added FLAC__format_blocksize_is_subset()
- libFLAC++:
- Add a number of convienience methods.