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mediaapi: Add notes to README about resizers

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Robert Swain 2017-06-06 03:02:27 +02:00
parent 08339d9682
commit 5b3f91057c
1 changed files with 3 additions and 1 deletions
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src/github.com/matrix-org/dendrite/mediaapi/README.md
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@ -4,4 +4,6 @@ This server is responsible for serving `/media` requests as per:
http://matrix.org/docs/spec/client_server/r0.2.0.html#id43 http://matrix.org/docs/spec/client_server/r0.2.0.html#id43
Thumbnailing uses bimg from https://github.com/h2non/bimg (MIT-licensed) which uses libvips from https://github.com/jcupitt/libvips (LGPL v2.1+ -licensed). libvips is a C library and must be installed/built separately. See the github page for details. Thumbnailing uses https://github.com/nfnt/resize by default which is a pure golang image scaling library relying on image codecs from the standard library. It is ISC-licensed.
Alternatively one can use `gb build -tags bimg` to use bimg from https://github.com/h2non/bimg (MIT-licensed) which uses libvips from https://github.com/jcupitt/libvips (LGPL v2.1+ -licensed). libvips is a C library and must be installed/built separately. See the github page for details. Also note that libvips in turn has dependencies with a selection of FOSS licenses. bimg and libvips have significantly better performance than nfnt/resize.