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New & improved README with tables and link to Wiki!
This commit is contained in:
Harald Kuhr
parent
fcd03eb903
commit
17d65a1f6f
368
README.md
368
README.md
@ -1,4 +1,6 @@
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[](https://travis-ci.org/haraldk/TwelveMonkeys) [](https://paypal.me/haraldk76/10)
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[](https://travis-ci.org/haraldk/TwelveMonkeys)
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[](https://stackoverflow.com/questions/tagged/twelvemonkeys)
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[](https://paypal.me/haraldk76/100)
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## Latest
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@ -9,7 +11,7 @@ Latest release is TwelveMonkeys ImageIO [3.6](https://search.maven.org/search?q=
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TwelveMonkeys ImageIO is a collection of plugins and extensions for Java's ImageIO.
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These plugins extends the number of image file formats supported in Java, using the javax.imageio.* package.
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These plugins extend the number of image file formats supported in Java, using the `javax.imageio.*` package.
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The main purpose of this project is to provide support for formats not covered by the JRE itself.
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Support for formats is important, both to be able to read data found
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@ -17,250 +19,66 @@ Support for formats is important, both to be able to read data found
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Because there is lots of legacy data out there, we see the need for open implementations of readers for popular formats.
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The goal is to create a set of efficient and robust ImageIO plug-ins, that can be distributed independently.
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----
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## Features
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## File formats supported
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Mainstream format support
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| Plugin | Format | Description | Read | Write | Metadata | Notes |
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| ------ | -------- | ----------- |:----:|:-----:| -------- | ----- |
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| Batik | **SVG** | Scalable Vector Graphics | ✔ | - | | Requires [Batik](https://xmlgraphics.apache.org/batik/)
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| | WMF | MS Windows Metafile | ✔ | - | Standard | Requires [Batik](https://xmlgraphics.apache.org/batik/)
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| |
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| [BMP](https://github.com/haraldk/TwelveMonkeys/wiki/BMP-Plugin) | **BMP** |
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| | CUR | MS Windows Cursor Format | ✔ | - | Standard |
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| | ICO | MS Windows Icon Format | ✔ | ✔ | Standard |
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| |
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| [HDR](https://github.com/haraldk/TwelveMonkeys/wiki/HDR-Plugin) | HDR | Radiance High Dynamic Range RGBE Format | ✔ | - | Standard |
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| [ICNS](https://github.com/haraldk/TwelveMonkeys/wiki/ICNS-Plugin) | ICNS | Apple Icon Image | ✔ | ✔ | Standard |
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| [IFF](https://github.com/haraldk/TwelveMonkeys/wiki/IFF-Plugin) | IFF | Commodore Amiga/Electronic Arts Interchange File Format | ✔ | ✔ | Standard |
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| [JPEG](https://github.com/haraldk/TwelveMonkeys/wiki/JPEG-Plugin) | **JPEG** | Joint Photographers Expert Group | ✔ | ✔ | Native & Standard |
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| [PCX](https://github.com/haraldk/TwelveMonkeys/wiki/PCX-Plugin) | PCX | ZSoft Paintbrush Format | ✔ | - | Standard |
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| | DCX | Multi-page PCX fax document | ✔ | - | Standard |
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| |
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| [PICT](https://github.com/haraldk/TwelveMonkeys/wiki/PICT-Plugin) | PICT | Apple Mac Paint Picture Format | ✔ | - | Standard |
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| [PNM](https://github.com/haraldk/TwelveMonkeys/wiki/PNM-Plugin) | PAM | NetPBM Portable Any Map | ✔ | ✔ | Standard |
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| | PBM | NetPBM Portable Bit Map | ✔ | - | Standard |
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| | PGM | NetPBM Portable Grey Map | ✔ | - | Standard |
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| | PPM | NetPBM Portable Pix Map | ✔ | ✔ | Standard |
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| | PFM | Portable Float Map | ✔ | - | Standard |
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| |
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| [PSD](https://github.com/haraldk/TwelveMonkeys/wiki/PSD-Plugin) | **PSD** | Adobe Photoshop Document | ✔ | - | Native & Standard |
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| | PSB | Adobe Photoshop Large Document | ✔ | - | Native & Standard |
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| |
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| [SGI](https://github.com/haraldk/TwelveMonkeys/wiki/SGI-Plugin) | SGI | Silicon Graphics Image Format | ✔ | - | Standard |
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| [TGA](https://github.com/haraldk/TwelveMonkeys/wiki/TGA-Plugin) | TGA | Truevision TGA Image Format | ✔ | ✔ | Standard |
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|ThumbsDB| Thumbs.db| MS Windows Thumbs DB | ✔ | - | Standard | OLE2 Compound Documents based format only
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| [TIFF](https://github.com/haraldk/TwelveMonkeys/wiki/TIFF-Plugin) | **TIFF** | Aldus/Adobe Tagged Image File Format | ✔ | ✔ | Native & Standard |
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| | BigTIFF | | ✔ | - | Native & Standard |
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| |
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| [WebP](https://github.com/haraldk/TwelveMonkeys/wiki/WebP-Plugin) | **WebP** | Google WebP Format | ✔ | - | Standard | In progress
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| XWD | XWD | X11 Window Dump Format | ✔ | - | Standard |
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#### BMP - MS Windows/IBM OS/2 Device Independent Bitmap
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* Read support for all known versions of the DIB/BMP format
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* Indexed color, 1, 4 and 8 bit, including 4 and 8 bit RLE
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* RGB, 16, 24 and 32 bit
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* Embedded PNG and JPEG data
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* Windows and OS/2 versions
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* Native and standard metadata format
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#### JPEG
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* Read support for the following JPEG "flavors":
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* All JFIF compliant JPEGs
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* All Exif compliant JPEGs
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* YCbCr JPEGs without JFIF segment (converted to RGB, using embedded ICC profile)
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* CMYK JPEGs (converted to RGB by default or as CMYK, using embedded ICC profile)
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* Adobe YCCK JPEGs (converted to RGB by default or as CMYK, using embedded ICC profile)
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* JPEGs containing ICC profiles with interpretation other than 'Perceptual' or class other than 'Display'
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* JPEGs containing ICC profiles that are incompatible with stream data, corrupted ICC profiles or corrupted `ICC_PROFILE` segments
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* JPEGs using non-standard color spaces, unsupported by Java 2D
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* JPEGs with APP14/Adobe segments with length other than 14 bytes
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* 8 bit JPEGs with 16 bit DQT segments
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* Issues warnings instead of throwing exceptions in cases of corrupted or non-conformant data where ever the image
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data can still be read in a reasonable way
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* Thumbnail support:
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* JFIF thumbnails (even if stream contains "inconsistent metadata")
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* JFXX thumbnails (JPEG, Indexed and RGB)
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* EXIF thumbnails (JPEG, RGB and YCbCr)
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* Metadata support:
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* JPEG metadata in both standard and native formats (even if stream contains "inconsistent metadata")
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* `javax_imageio_jpeg_image_1.0` format (currently as native format, may change in the future)
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* Non-conforming combinations of JFIF, Exif and Adobe markers, using "unknown" segments in the
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"MarkerSequence" tag for the unsupported segments (for `javax_imageio_jpeg_image_1.0` format)
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* Extended write support:
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* CMYK JPEGs
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* YCCK JPEGs in progress
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#### JPEG-2000
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* Possibly coming in the future, pending some license issues.
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If you are one of the authors, or know one of the authors and/or the current license holders of either the original
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jj2000 package or the JAI ImageIO project, please contact me (I've tried to get in touch in various ways,
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without success so far).
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Alternatively, if you have or know of a JPEG-2000 implementation in Java with a suitable license, get in touch. :-)
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#### PNM - NetPBM Portable Any Map
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* Read support for the following file types:
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* PBM in 'P1' (ASCII) and 'P4' (binary) formats, 1 bit per pixel
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* PGM in 'P2' (ASCII) and 'P5' (binary) formats, up to 16/32 bits per pixel
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* PPM in 'P3' (ASCII) and 'P6' (binary) formats, up to 16/32 bits per pixel component
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* PAM in 'P7' (binary) format up to 32 bits per pixel component
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* Limited support for PFM in 'Pf' (gray) and 'PF' (RGB) formats, 32 bits floating point
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* Write support for the following formats:
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* PPM in 'P6' (binary) format
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* PAM in 'P7' (binary) format
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* Standard metadata support
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#### PSD - Adobe Photoshop Document
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* Read support for the following file types:
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* Monochrome, 1 channel, 1 bit
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* Indexed, 1 channel, 8 bit
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* Gray, 1 channel, 8, 16 and 32 bit
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* Duotone, 1 channel, 8, 16 and 32 bit
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* RGB, 3-4 channels, 8, 16 and 32 bit
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* CMYK, 4-5 channels, 8, 16 and 32 bit
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* Read support for the following compression types:
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* Uncompressed
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* RLE (PackBits)
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* Layer support
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* Image layers only, in all of the above types
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* Thumbnail support
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* JPEG
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* RAW (RGB)
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* Support for "Large Document Format" (PSB)
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* Native and Standard metadata support
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#### TIFF - Aldus/Adobe Tagged Image File Format
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* Read support for the following "Baseline" TIFF file types:
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* Class B (Bi-level), all relevant compression types, 1 bit per sample
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* Class G (Gray), all relevant compression types, 2, 4, 8, 16 or 32 bits per sample, unsigned integer
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* Class P (Palette/indexed color), all relevant compression types, 1, 2, 4, 8 or 16 bits per sample, unsigned integer
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* Class R (RGB), all relevant compression types, 8 or 16 bits per sample, unsigned integer
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* Read support for the following TIFF extensions:
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* Tiling
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* Class F (Facsimile), CCITT Modified Huffman RLE, T4 and T6 (type 2, 3 and 4) compressions.
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* LZW Compression (type 5)
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* "Old-style" JPEG Compression (type 6), as a best effort, as the spec is not well-defined
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* JPEG Compression (type 7)
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* ZLib (aka Adobe-style Deflate) Compression (type 8)
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* Deflate Compression (type 32946)
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* Horizontal differencing Predictor (type 2) for LZW, ZLib, Deflate and PackBits compression
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* Alpha channel (ExtraSamples type 1/Associated Alpha and type 2/Unassociated Alpha)
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* CMYK data (PhotometricInterpretation type 5/Separated)
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* YCbCr data (PhotometricInterpretation type 6/YCbCr) for JPEG
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* CIELab data in TIFF, ITU and ICC variants (PhotometricInterpretation type 9, 10 and 11)
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* Planar data (PlanarConfiguration type 2/Planar)
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* ICC profiles (ICCProfile)
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* BitsPerSample values up to 16 for most PhotometricInterpretations
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* Multiple images (pages) in one file
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* Write support for most "Baseline" TIFF options
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* Uncompressed, PackBits, ZLib and Deflate
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* Additional support for CCITT T4 and and T6 compressions.
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* Additional support for LZW and JPEG (type 7) compressions
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* Horizontal differencing Predictor (type 2) for LZW, ZLib, Deflate
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* Native and Standard metadata support
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Legacy formats
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#### HDR - Radiance High Dynamic Range RGBE Format
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* Read support for the most common RGBE (.hdr) format
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* Samples are converted to 32 bit floating point (`float`) and normalized using a global tone mapper by default.
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* Support for custom global tone mappers
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* Alternatively, use a "null-tone mapper", for unnormalized data (allows local tone mapping)
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* Unconverted RGBE samples accessible using `readRaster`
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* Standard metadata support
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#### IFF - Commodore Amiga/Electronic Arts Interchange File Format
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* Legacy format, allows reading popular image format from the Commodore Amiga computer.
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* Read support for the following file types:
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* ILBM Indexed color, 1-8 interleaved bit planes, including 6 bit EHB
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* ILBM Gray, 8 bit interleaved bit planes
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* ILBM RGB, 24 and 32 bit interleaved bit planes
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* ILBM HAM6 and HAM8
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* PBM Indexed color, 1-8 bit,
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* PBM Gray, 8 bit
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* PBM RGB, 24 and 32 bit
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* PBM HAM6 and HAM8
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* Write support
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* ILBM Indexed color, 1-8 bits per sample, 8 bit gray, 24 and 32 bit true color.
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* Support for the following compression types (read/write):
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* Uncompressed
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* RLE (PackBits)
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#### PCX - ZSoft Paintbrush Format
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* Read support for the following file types:
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* Indexed color, 1, 2, 4 or 8 bits per pixel, bit planes or interleaved
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* Grayscale, 8 bits per pixel
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* Color (RGB), 8 bits per pixel component
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* Read support for DCX (multi-page) fax format, containing any of the above types
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* Support for the following compression types:
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* Uncompressed (experimental)
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* RLE compressed
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* Standard metadata support
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#### PICT - Apple Mac Paint Picture Format
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* Legacy format, especially useful for reading OS X clipboard data.
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* Read support for the following file types:
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* QuickDraw (format support is not complete, but supports most OS X clipboard data as well as RGB pixel data)
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* QuickDraw bitmap
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* QuickDraw pixmap
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* QuickTime stills
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* Write support for RGB pixel data:
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* QuickDraw pixmap
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#### SGI - Silicon Graphics Image Format
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* Read support for the following file types:
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* 1, 2, 3 or 4 channel image data
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* 8 or 16 bits per pixel component
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* Support for the following compression types:
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* Uncompressed
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* RLE compressed
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* Standard metadata support
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#### TGA - Truevision TGA Image Format
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* Read support for the following file types:
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* ColorMapped
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* Monochrome
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* TrueColor
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* Support for the following compression types:
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* Uncompressed
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* RLE compressed
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* Standard metadata support
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* Write support
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Icon/other formats
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#### ICNS - Apple Icon Image
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* Read support for the following icon types:
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* All known "native" icon types
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* Large PNG encoded icons
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* Large JPEG 2000 encoded icons (requires JPEG 2000 ImageIO plugin or fallback to `sips` command line tool)
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* Write support for PNG encoded icons
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#### ICO & CUR - MS Windows Icon and Cursor Formats
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* Read support for the following file types:
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* ICO Indexed color, 1, 4 and 8 bit
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* ICO RGB, 16, 24 and 32 bit
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* CUR Indexed color, 1, 4 and 8 bit
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* CUR RGB, 16, 24 and 32 bit
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* Write support
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* *3.1* Note: These formats are now part of the BMP plugin
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#### Thumbs.db - MS Windows Thumbs DB
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* Read support
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Other formats, using 3rd party libraries
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#### SVG - Scalable Vector Graphics
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* Read-only support using Batik
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#### WMF - MS Windows MetaFile
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* Limited read-only support using Batik
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**Important note on using Batik:** *Please read [The Apache™ XML Graphics Project - Security](http://xmlgraphics.apache.org/security.html), and make sure you use
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either version 1.6.1, 1.7.1 or 1.8+.*
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**Important note on using Batik:** *Please read [The Apache™ XML Graphics Project - Security](http://xmlgraphics.apache.org/security.html),
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and make sure you use either version 1.6.1, 1.7.1, 1.8+ or later.*
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## Basic usage
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Most of the time, all you need to do is simply include the plugins in your project and write:
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BufferedImage image = ImageIO.read(file);
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```java
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BufferedImage image = ImageIO.read(file);
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```
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This will load the first image of the file, entirely into memory.
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The basic and simplest form of writing is:
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if (!ImageIO.write(image, format, file)) {
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```java
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if (!ImageIO.write(image, format, file)) {
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// Handle image not written case
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}
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}
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```
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This will write the entire image into a single file, using the default settings for the given format.
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@ -271,10 +89,10 @@ The plugins are discovered automatically at run time. See the [FAQ](#faq) for mo
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If you need more control of read parameters and the reading process, the common idiom for reading is something like:
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```java
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// Create input stream
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ImageInputStream input = ImageIO.createImageInputStream(file);
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// Create input stream
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ImageInputStream input = ImageIO.createImageInputStream(file);
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try {
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try {
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// Get the reader
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Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
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@ -310,11 +128,11 @@ If you need more control of read parameters and the reading process, the common
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// Dispose reader in finally block to avoid memory leaks
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reader.dispose();
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}
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}
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finally {
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}
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finally {
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// Close stream in finally block to avoid resource leaks
|
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input.close();
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}
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}
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```
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Query the reader for source image dimensions using `reader.getWidth(n)` and `reader.getHeight(n)` without reading the
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@ -326,16 +144,16 @@ It's also possible to read multiple images from the same file in a loop, using `
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If you need more control of write parameters and the writing process, the common idiom for writing is something like:
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```java
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// Get the writer
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Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(format);
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// Get the writer
|
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Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(format);
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||||
if (!writers.hasNext()) {
|
||||
if (!writers.hasNext()) {
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||||
throw new IllegalArgumentException("No writer for: " + format);
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||||
}
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||||
}
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||||
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||||
ImageWriter writer = writers.next();
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ImageWriter writer = writers.next();
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||||
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||||
try {
|
||||
try {
|
||||
// Create output stream
|
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ImageOutputStream output = ImageIO.createImageOutputStream(file);
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||||
@ -356,32 +174,48 @@ If you need more control of write parameters and the writing process, the common
|
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// Close stream in finally block to avoid resource leaks
|
||||
output.close();
|
||||
}
|
||||
}
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finally {
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||||
}
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||||
finally {
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||||
// Dispose writer in finally block to avoid memory leaks
|
||||
writer.dispose();
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||||
}
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}
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```
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||||
For more advanced usage, and information on how to use the ImageIO API, I suggest you read the
|
||||
[Java Image I/O API Guide](http://docs.oracle.com/javase/7/docs/technotes/guides/imageio/spec/imageio_guideTOC.fm.html)
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from Oracle.
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||||
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||||
#### Adobe Clipping Path support
|
||||
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||||
```java
|
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import com.twelvemonkeys.imageio.path.Paths;
|
||||
|
||||
...
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||||
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||||
try (ImageInputStream stream = ImageIO.createImageInputStream(new File("image_with_path.jpg")) {
|
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BufferedImage image = Paths.readClipped(stream);
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||||
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||||
// Do something with the clipped image...
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}
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```
|
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See [Adobe Clipping Path support on the Wiki](https://github.com/haraldk/TwelveMonkeys/wiki/Photoshop-Clipping-Path-support) for more details and example code.
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||||
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||||
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||||
#### Using the ResampleOp
|
||||
|
||||
The library comes with a resampling (image resizing) operation, that contains many different algorithms
|
||||
to provide excellent results at reasonable speed.
|
||||
|
||||
```java
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||||
import com.twelvemonkeys.image.ResampleOp;
|
||||
import com.twelvemonkeys.image.ResampleOp;
|
||||
|
||||
...
|
||||
...
|
||||
|
||||
BufferedImage input = ...; // Image to resample
|
||||
int width, height = ...; // new width/height
|
||||
BufferedImage input = ...; // Image to resample
|
||||
int width, height = ...; // new width/height
|
||||
|
||||
BufferedImageOp resampler = new ResampleOp(width, height, ResampleOp.FILTER_LANCZOS); // A good default filter, see class documentation for more info
|
||||
BufferedImage output = resampler.filter(input, null);
|
||||
BufferedImageOp resampler = new ResampleOp(width, height, ResampleOp.FILTER_LANCZOS); // A good default filter, see class documentation for more info
|
||||
BufferedImage output = resampler.filter(input, null);
|
||||
```
|
||||
|
||||
#### Using the DiffusionDither
|
||||
@ -390,14 +224,14 @@ The library comes with a dithering operation, that can be used to convert `Buffe
|
||||
Floyd-Steinberg error-diffusion dither.
|
||||
|
||||
```java
|
||||
import com.twelvemonkeys.image.DiffusionDither;
|
||||
import com.twelvemonkeys.image.DiffusionDither;
|
||||
|
||||
...
|
||||
...
|
||||
|
||||
BufferedImage input = ...; // Image to dither
|
||||
BufferedImage input = ...; // Image to dither
|
||||
|
||||
BufferedImageOp ditherer = new DiffusionDither();
|
||||
BufferedImage output = ditherer.filter(input, null);
|
||||
BufferedImageOp ditherer = new DiffusionDither();
|
||||
BufferedImage output = ditherer.filter(input, null);
|
||||
```
|
||||
|
||||
## Building
|
||||
@ -435,10 +269,10 @@ The ImageIO registry and service lookup mechanism will make sure the plugins are
|
||||
To verify that the JPEG plugin is installed and used at run-time, you could use the following code:
|
||||
|
||||
```java
|
||||
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
|
||||
while (readers.hasNext()) {
|
||||
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
|
||||
while (readers.hasNext()) {
|
||||
System.out.println("reader: " + readers.next());
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
The first line should print:
|
||||
@ -450,8 +284,8 @@ The first line should print:
|
||||
To depend on the JPEG and TIFF plugin using Maven, add the following to your POM:
|
||||
|
||||
```xml
|
||||
...
|
||||
<dependencies>
|
||||
...
|
||||
<dependencies>
|
||||
...
|
||||
<dependency>
|
||||
<groupId>com.twelvemonkeys.imageio</groupId>
|
||||
@ -473,7 +307,7 @@ To depend on the JPEG and TIFF plugin using Maven, add the following to your POM
|
||||
<artifactId>servlet</artifactId>
|
||||
<version>3.6</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
</dependencies>
|
||||
```
|
||||
|
||||
#### Manual dependency example
|
||||
@ -506,18 +340,18 @@ it is *strongly recommended* to use the `IIOProviderContextListener` that implem
|
||||
dynamic loading and unloading of ImageIO plugins for web applications.
|
||||
|
||||
```xml
|
||||
<web-app ...>
|
||||
<web-app ...>
|
||||
|
||||
...
|
||||
...
|
||||
|
||||
<listener>
|
||||
<display-name>ImageIO service provider loader/unloader</display-name>
|
||||
<listener-class>com.twelvemonkeys.servlet.image.IIOProviderContextListener</listener-class>
|
||||
</listener>
|
||||
|
||||
...
|
||||
...
|
||||
|
||||
</web-app>
|
||||
</web-app>
|
||||
```
|
||||
|
||||
Loading plugins from `WEB-INF/lib` without the context listener installed is unsupported and will not work correctly.
|
||||
@ -624,7 +458,7 @@ Servlet support
|
||||
|
||||
The project is distributed under the OSI approved [BSD license](http://opensource.org/licenses/BSD-3-Clause):
|
||||
|
||||
Copyright (c) 2008-2018, Harald Kuhr
|
||||
Copyright (c) 2008-2020, Harald Kuhr
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user