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AVIF support (#671) Demand for AVIF support on the web is growing, as the word gets out about this new file format which allows higher-quality encoding at smaller sizes. Core contributors to major open-source CMSs are interested in auto-generating AVIF images! They've been simply waiting for support to appear in libgd. This PR aims to meet the growing demand, and to help bring smaller, more beautiful images to more of the web - to sites created by experienced developers and CMS users alike. This PR adds support by incorporating libavif in addition to the existing libheif support. It's generally felt that libavif has more complete support for the AVIF format. libavif is also used by the Chromium project and squoosh.app. In this PR, I've endeavored to incorporate the latest research into best practices for AVIF encoding - not just for default quantizer values, but also an algorithm for determining the number of horizontal tiles, vertical tiles, and threads. Fixes #557.
2021-03-03 18:35:56 -08:00
Ben Morss (morsssss)
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2015-01-13 19:05:51 -08:00
chapg
Add myself to CONTRIBUTORS
2019-12-22 06:47:52 -08:00
Chen Pingping (Wilson)
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2015-01-13 19:05:51 -08:00
Chris Reuter
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2016-07-19 09:08:47 -07:00
Christoph M. Becker
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2015-01-13 19:05:51 -08:00
Colin Watson
Dimitar Dobrev
edink
Gilles Espinasse
guenter
Kornel Lesiński
kshepherd
lhecking
Marcin Wojdyr
HEIF support through libheif (#670) With the adoption of AVIF by Firefox and Chromium based browsers (still in experimental phase), the newer incorporation of HEIF by Canon and Sony in their cameras and the newer support of both of them in modern software like ImageMagick, GIMP and Krita, `gd` haven't seen any endorsement for the formats up until this PR. Reading and writing is done by `libheif`, with functionality for chroma subsampling (for now `4:2:0`, `4:2:2` and `4:4:4`), quality (with new `200` for lossless) and compression (whether `HEVC` or `AV1`) selection. This was tested with `libheif` version `1.11.0` in my Solus machine. Also, fixes both #395 and #557.
2021-03-02 09:32:03 -08:00
Martin Reboredo (YakoYakoYokuYoku)
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2015-01-13 19:05:51 -08:00
mattias
Mike Frysinger
Updated myself in CONTRIBUTORS
2018-04-05 03:08:15 -07:00
Mateusz Loskot (mloskot)
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2015-01-13 19:05:51 -08:00
Nathanael Jones
nlopess
Ondřej Surý
Pierre Joye
pornel
Remi Collet
scottmac
tabe
Takeshi Abe
Tim Toohey
tostercx
Vincent Bernat