Encoder - Githubissues

umjammer / vavi-image-jpegxl

🖼️ JPEG XL Java ImageIO SPI (libjxl, jna)

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Encoder #5

Open T8RIN opened 1 year ago

T8RIN commented 1 year ago

Will the encoder be added?

umjammer commented 1 year ago

currently no.

imo

java should read every data format
java should write data using the best (≒ de facto standard) format only

i chose 'avif' as the de facto standard. so writing 'jpeg-xl' has not been implemented yet.

do u still want this feature? this is a hobby project, wait patiently for that time.

T8RIN commented 1 year ago

currently no.

imo

java should read every data format

java should write data using the best (≒ de facto standard) format only

i chose 'avif' as the de facto standard. so writing 'jpeg-xl' has not been implemented yet.

do u still want this feature? this is a hobby project, wait patiently for that time.

Is there is java lob which can write avif without cpp ?

umjammer commented 1 year ago

it seems there is no avif in pure java.

i tried to write avif in pure java before, but i realized libavif is just an integration library for several codec libraries.

that means libavif consists of

libaom (encoder and decoder)
dav1d (decoder)
libgav1 (decoder)
rav1e (encoder)
SVT-AV1 (encoder)

and most of those library are written in assembler not even in C! porting those assemblers into java is beyond my capacity. so i quit porting libavif into java.

recently macos and windows? supports avif os natively. it's better to wait until android supports avif natively.

T8RIN commented 1 year ago

Sounds quite interesting :)

T8RIN commented 1 year ago

it seems there is no avif in pure java.

i tried to write avif in pure java before, but i realized libavif is just an integration library for several codec libraries.

that means libavif consists of

libaom (encoder and decoder)

dav1d (decoder)

libgav1 (decoder)

rav1e (encoder)

SVT-AV1 (encoder)

and most of those library are written in assembler not even in C! porting those assemblers into java is beyond my capacity. so i quit porting libavif into java.

recently macos and windows? supports avif os natively. it's better to wait until android supports avif natively.

Didn't know that it was written on an assembler, that is mind-blowing for me, because i thought it was C...

umjammer commented 10 months ago

jpeg-xl is better than avif???

https://support.imageengine.io/hc/en-us/articles/16739209580301

anyway avif is still de facto standard because my chrome browser doesn't support jpeg-xl yet

https://caniuse.com/jpegxl