X-Git-Url: http://git.shiar.net/sheet.git/blobdiff_plain/53d46a1b9a53afd1f4e9e639e9d3e0fb2a512f3d..433d74a7369648a5a005b8678d005d85fe1dfac1:/codec.inc.pl?ds=sidebyside
diff --git a/codec.inc.pl b/codec.inc.pl
new file mode 100644
index 0000000..a76b04d
--- /dev/null
+++ b/codec.inc.pl
@@ -0,0 +1,391 @@
+use utf8;
++{
+codec => {
+ jpeg => {
+ name => 'JPEG',
+ available => 1992,
+ },
+ png => {
+ name => 'PNG',
+ available => 1996,
+ },
+ jp2k => {
+ name => 'JPEG 2000',
+ available => 2000,
+ },
+ webp => {
+ name => 'WebP',
+ available => 2010,
+ },
+ heic => {
+ name => 'HEIC',
+ available => 2015,
+ },
+ avif => {
+ name => 'AVIF',
+ available => 2019,
+ },
+ jxl => {
+ name => 'JPEG XL',
+ available => 2021,
+ },
+},
+feature => {
+ quality_photo => {
+ name => 'compression (photo)',
+ score => {
+ jpeg => 3,
+ png => 1,
+ jp2k => 4,
+ webp => 3,
+ heic => 5,
+ avif => 5,
+ jxl => 5,
+ },
+ },
+ quality_photo_1 => {
+ name => 'low fidelity',
+ score => {
+ jpeg => 2,
+ png => 1,
+ jp2k => 3,
+ webp => 3,
+ heic => 5,
+ avif => 5,
+ jxl => 4,
+ },
+ },
+ quality_photo_2 => {
+ name => 'medium fidelity',
+ score => {
+ jpeg => 3,
+ png => 1,
+ jp2k => 4,
+ webp => 3,
+ heic => 4,
+ avif => 5,
+ jxl => 5,
+ },
+ },
+ quality_photo_3 => {
+ name => 'high fidelity',
+ score => {
+ jpeg => 3,
+ png => 2,
+ jp2k => 4,
+ webp => 2,
+ heic => 3,
+ avif => 4,
+ jxl => 5,
+ },
+ },
+ quality_photo_ll => {
+ name => 'lossless',
+ score => {
+ jpeg => 1,
+ png => 2,
+ jp2k => 4,
+ webp => 3,
+ heic => 3,
+ avif => 3,
+ jxl => 5,
+ },
+ },
+ quality_art => {
+ name => 'compression (other images)',
+ score => {
+ jpeg => 2,
+ png => 3,
+ jp2k => 2,
+ webp => 4,
+ heic => 3,
+ avif => 4.5,
+ jxl => 5,
+ },
+ },
+ quality_art_2 => {
+ name => 'lossy non-photographic',
+ score => {
+ jpeg => 2,
+ png => 3,
+ jp2k => 2,
+ webp => 4,
+ heic => 3,
+ avif => 5,
+ jxl => 5,
+ },
+ },
+ quality_art_ll => {
+ name => 'lossless non-photographic',
+ score => {
+ jpeg => 1,
+ png => 4,
+ jp2k => 2,
+ webp => 5,
+ heic => 2,
+ avif => 3,
+ jxl => 5,
+ },
+ },
+ quality_art_mixed => {
+ name => 'mixed photo/nonphoto',
+ score => {
+ jpeg => 2,
+ png => 2,
+ jp2k => 2,
+ webp => 3,
+ heic => 3,
+ avif => 5,
+ jxl => 5,
+ },
+ },
+ speed => {
+ score => {
+ jpeg => 5,
+ png => 4,
+ jp2k => 3,
+ webp => 4,
+ heic => 3,
+ avif => 3,
+ jxl => 5,
+ },
+ },
+ speed_encode => {
+ name => 'single-core encode',
+ score => {
+ jpeg => 5,
+ png => 3,
+ jp2k => 4,
+ webp => 4,
+ heic => 3,
+ avif => 2,
+ jxl => 5,
+ },
+ },
+ speed_decode => {
+ name => 'single-core decode',
+ score => {
+ jpeg => 5,
+ png => 5,
+ jp2k => 4,
+ webp => 5,
+ heic => 3,
+ avif => 3,
+ jxl => 5,
+ },
+ },
+ speed_parallel => {
+ name => 'pararellizable',
+ score => {
+ jpeg => 2,
+ png => 2,
+ jp2k => 4,
+ webp => 2,
+ heic => 4,
+ avif => 4,
+ jxl => 5,
+ },
+ },
+ limits => {
+ score => {
+ jpeg => 3,
+ png => 4,
+ jp2k => 5,
+ webp => 2,
+ heic => 4,
+ avif => 4.5,
+ jxl => 5,
+ },
+ },
+ max_dimensions => {
+ name => 'maximum image dimensions',
+ data => {
+ jpeg => '65k²', # 2**16
+ png => '2G²', # 2**31
+ jp2k => '4G²', # 2**32
+ webp => '16k²', # 2**14
+ heic => '8kÃ4k+', # 2**13
+ avif => '8kÃ4k+',
+ jxl => '1G²', # 2**30
+ },
+ },
+ max_bitdepth => {
+ name => 'precision (max. bit depth)',
+ data => {
+ jpeg => 8,
+ png => 16,
+ jp2k => 38,
+ webp => 8,
+ heic => 10,
+ avif => 10,
+ jxl => 32,
+ },
+ },
+ color_444 => {
+ name => 'can do (lossy) 4:4:4',
+ score => {
+ jpeg => 'y',
+ png => 'y',
+ jp2k => 'y',
+ webp => 'n',
+ heic => 'n',
+ avif => 'y',
+ jxl => 'y',
+ },
+ },
+ hdr => {
+ name => 'wide gamut/HDR',
+ score => {
+ jpeg => 'n',
+ png => 'y',
+ jp2k => 'y',
+ webp => 'n',
+ heic => 'y',
+ avif => 'y',
+ jxl => 'y',
+ },
+ },
+ max_channels => {
+ name => 'maximum number of channels',
+ data => {
+ jpeg => 4, # cmyk
+ png => 4, # cmyk
+ jp2k => 2**15,
+ webp => 4,
+ heic => 5,
+ avif => 5,
+ jxl => 4099,
+ },
+ },
+ features => {
+ score => {
+ jpeg => 2,
+ png => 3,
+ jp2k => 4,
+ webp => 2,
+ heic => 4,
+ avif => 4,
+ jxl => 5,
+ },
+ },
+ animation => {
+ name => 'supports animation',
+ score => {
+ jpeg => 'n',
+ png => 'y',
+ jp2k => 'n',
+ webp => 'y',
+ heic => 'y',
+ avif => 'y',
+ jxl => 'y',
+ },
+ data => {
+ jpeg => 'MJPEG',
+ png => 'APNG',
+ jp2k => 'MJP2',
+ },
+ },
+ progressive => {
+ name => 'progressive decoding',
+ score => {
+ jpeg => 4,
+ png => 2,
+ jp2k => 5,
+ webp => 'n',
+ heic => 'n',
+ avif => 'n',
+ jxl => 5,
+ },
+ },
+ alpha => {
+ name => 'alpha transparency',
+ score => {
+ jpeg => 'n',
+ png => 'y',
+ jp2k => 'y',
+ webp => 'y',
+ heic => 'y',
+ avif => 'y',
+ jxl => 'y',
+ },
+ },
+ depthmap => {
+ name => 'depth map',
+ score => {
+ jpeg => 'n',
+ png => 'n',
+ jp2k => 'n',
+ webp => 'n',
+ heic => 'y',
+ avif => 'y',
+ jxl => 'y',
+ },
+ },
+ overlays => {
+ name => 'overlays',
+ score => {
+ jpeg => 'n',
+ png => 'n',
+ jp2k => 'n',
+ webp => 'n',
+ heic => 'y',
+ avif => 'y',
+ jxl => 'y',
+ },
+ },
+ authoring => {
+ name => 'authoring workflow suitability',
+ score => {
+ jpeg => 2,
+ png => 3,
+ jp2k => 3,
+ webp => 2,
+ heic => 2,
+ avif => 2,
+ jxl => 5,
+ },
+ },
+ reencode => {
+ name => 'generation loss resilience',
+ score => {
+ jpeg => 4,
+ png => 'n/a',
+ jp2k => 3,
+ webp => 2,
+ heic => 3,
+ avif => 3,
+ jxl => 4,
+ },
+ data => {
+ png => 'n/a',
+ },
+ },
+ compat_jpeg => {
+ name => 'lossless JPEG recompression',
+ score => {
+ jpeg => 0,
+ png => 'n',
+ jp2k => 'n',
+ webp => 'n',
+ heic => 'n',
+ avif => 'n',
+ jxl => 'y',
+ },
+ data => {
+ jpeg => 'n/a',
+ },
+ },
+ royalties => {
+ name => 'royalty-free',
+ score => {
+ jpeg => 'y',
+ png => 'y',
+ jp2k => 'y',
+ webp => 'y',
+ heic => 'n',
+ avif => 'y',
+ jxl => 'y',
+ },
+ },
+},
+}