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Readme updates, mentioning JPEG lossless and built-in support (closes #471).

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Harald Kuhr 2021-03-01 18:42:59 +01:00
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README.md
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@ -29,7 +29,8 @@ The goal is to create a set of efficient and robust ImageIO plug-ins, that can b
| [HDR](https://github.com/haraldk/TwelveMonkeys/wiki/HDR-Plugin) | HDR | Radiance High Dynamic Range RGBE Format | ✔ | - | Standard |
| [ICNS](https://github.com/haraldk/TwelveMonkeys/wiki/ICNS-Plugin) | ICNS | Apple Icon Image | ✔ | ✔ | - |
| [IFF](https://github.com/haraldk/TwelveMonkeys/wiki/IFF-Plugin) | IFF | Commodore Amiga/Electronic Arts Interchange File Format | ✔ | ✔ | Standard |
| [JPEG](https://github.com/haraldk/TwelveMonkeys/wiki/JPEG-Plugin) | **JPEG** | Joint Photographers Expert Group | ✔ | ✔ | Native & Standard |
| [JPEG](https://github.com/haraldk/TwelveMonkeys/wiki/JPEG-Plugin) | **JPEG** | Joint Photographers Expert Group | ✔ | ✔ | Native & Standard |
| | **JPEG Lossless** | | ✔ | - | Native & Standard |
| [PCX](https://github.com/haraldk/TwelveMonkeys/wiki/PCX-Plugin) | PCX | ZSoft Paintbrush Format | ✔ | - | Standard |
| | DCX | Multi-page PCX fax document | ✔ | - | Standard |
| [PICT](https://github.com/haraldk/TwelveMonkeys/wiki/PICT-Plugin) | PICT | Apple Mac Paint Picture Format | ✔ | - | - |
@ -50,7 +51,11 @@ The goal is to create a set of efficient and robust ImageIO plug-ins, that can b
**Important note on using Batik:** *Please read [The Apache™ XML Graphics Project - Security](http://xmlgraphics.apache.org/security.html),
and make sure you use either version 1.6.1, 1.7.1, 1.8+ or later.*
and make sure you use version 1.14 or later.*
Note that GIF, PNG and WBMP formats are already supported through the ImageIO API, using the
[JDK standard plugins](https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/package-summary.html).
For BMP, JPEG, and TIFF formats the TwelveMonkeys plugins provides extended format support and additional features.
## Basic usage
@ -497,10 +502,15 @@ the Sun/Oracle provided `JPEGImageReader` and `BMPImageReader`, and the Apple pr
respectively. Using the pairwise ordering will not remove any functionality form these implementations, but in most
cases you'll end up using the TwelveMonkeys plug-ins instead.
q: Why is there no support for common formats like GIF or PNG?
a: The short answer is simply that the built-in support in ImageIO for these formats are good enough as-is.
If you are looking for better PNG write performance on Java 7 and 8, see [JDK9 PNG Writer Backport](https://github.com/gredler/jdk9-png-writer-backport).
q: What about JAI? Several of the formats are already supported by JAI.
a: While JAI (and jai-imageio in particular) have support for some of the formats, JAI has some major issues.
a: While JAI (and jai-imageio in particular) have support for some of the same formats, JAI has some major issues.
The most obvious being:
- It's not actively developed. No issues has been fixed for years.
- To get full format support, you need native libs.