On 2019/4/16 14:43, Park Ju Hyung wrote:
> Following extensions are removed:
> - divx: deprecated video format and it's usually wrapped with avi
> - asf: deprecated streaming format
> - asx: redirecting file to asf(small)
> - wmx: redirecting file to wma/wmv(small)
> - rm: deprecated media container
> - video: unused
> - wv: unpopular audio format from 1998
>
> The extensions list is limited to 64 and those don't deserve to be
> on this space-precious list.
>
> Common prefixes are introduced and are checked with
> https://en.wikipedia.org/wiki/List_of_filename_extensions
> to avoid treating possible hot files as cold:
> - mp: covers mp3, mp4, mpeg, mpg
> - wm: covers wma, wmb, wmv
> - og: covers oga, ogg, ogm, ogv
> - jp: covers jpg, jpeg, jp2
>
> Following extensions are added:
> - webm: extremely popular free media container format from Google
> VP8/VP9/AV1 and Vorbis/Opus is often wrapped with this container
> - wav: uncompressed audio format, commonly used with voice recorders
> - svg: vector image format commonly used in web
> - webp: free lossy image format commonly used in web
> - jar: Java archive file
> - deb: Debian software package
> - iso: disk image file
> - gz: gzip compressed file, unable to randomly update
> - xz: xz compressed file, unable to randomly update
> - zst: zstd compressed file, unable to randomly update
> - pdf: PDF document
> - pyc: Python bytecode automatically generated when
> executing python to run .py files
> - ttc, ttf: font files
> - cnt: image alias files commonly used in Android apps
> - exo: EXO player's cache files, commonly used in Android's YouTube app
> - odex, vdex: Android RunTime files found in /data/app/*/oat
>
> Total entries on the list changed from 34 to 36.
>
> Signed-off-by: Park Ju Hyung <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Thanks,
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