Documentation
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Overview ¶
Package jbig2 provides the jbig2 standard image Encoder and Decoder. All the comments reference to the 'ISO/IEC 14992 INFORMATION TECHNOLOGY - CODED REPRESENTATION OF PICTURE AND AUDIO INFORMATION - LOSSY/LOSSLESS CODING OF BI-LEVEL IMAGES JBIG committee 1999 July 16' document. The document is available and can be downloaded at: 'https://github.com/agl/jbig2enc/blob/master/fcd14492.pdf'
The decoder was based on the 'Apache PDFBox JBIG2 Java plugin' which can be found at: 'https://github.com/apache/pdfbox-jbig2'.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func DecodeBytes ¶
DecodeBytes decodes jbig2 'encode' byte slice data, with provided 'parameters' and optional 'globals'. The function decodes only a single page from the given input.
Types ¶
type Globals ¶
Globals is the v3 mapping of the jbig2 segments to header mapping.
func DecodeGlobals ¶
DecodeGlobals decodes globally defined data segments from the provided 'encoded' byte slice.
func (Globals) ToDocumentGlobals ¶
ToDocumentGlobals converts 'jbig2.Globals' into '*document.Globals'
Source Files
Directories
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| Path | Synopsis |
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Package basic contains common structures, slices and maps used within the jbig2 package.
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Package basic contains common structures, slices and maps used within the jbig2 package. |
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Package bitmap contains the bitmap data container for the binary images used when decoding the jbig2 encoded images.
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Package bitmap contains the bitmap data container for the binary images used when decoding the jbig2 encoded images. |
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Package decoder provides primitives used to decode the jbig2 data stream.
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Package decoder provides primitives used to decode the jbig2 data stream. |
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arithmetic
Package arithmetic contains the jbig2 arithmetic decoder used to decode the jbig2 encoded segments.
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Package arithmetic contains the jbig2 arithmetic decoder used to decode the jbig2 encoded segments. |
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huffman
Package huffman contains jbig2 huffman tables used to decode jbig2 encoded data segments.
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Package huffman contains jbig2 huffman tables used to decode jbig2 encoded data segments. |
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mmr
Package mmr contains the jbig2 mmr decoder used to decode jbig2 encoded data segments.
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Package mmr contains the jbig2 mmr decoder used to decode jbig2 encoded data segments. |
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Package document provides jbig2 encoding primitives used for encoding and decoding purpose.
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Package document provides jbig2 encoding primitives used for encoding and decoding purpose. |
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segments
Package segments provides jbig2 segments models used in the jbig2 document decoding process.
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Package segments provides jbig2 segments models used in the jbig2 document decoding process. |
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encoder
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arithmetic
Package arithmetic provides jbig2 arithmetic encoder definitions.
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Package arithmetic provides jbig2 arithmetic encoder definitions. |
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classer
Package classer contains apache leptonica like implementation of the jbig2 classificator.
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Package classer contains apache leptonica like implementation of the jbig2 classificator. |
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Package errors contains error wrappers and creators used for precise error messaging in the jbig2 package.
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Package errors contains error wrappers and creators used for precise error messaging in the jbig2 package. |
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Package reader provides the stream readers used by the jbig2 segments decoder.
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Package reader provides the stream readers used by the jbig2 segments decoder. |
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Package tests contains the tests and benchmarks for the JBIG2 decoder and encoder.
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Package tests contains the tests and benchmarks for the JBIG2 decoder and encoder. |
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Package writer contains the data writer that implements io.Writer, io.ByteWriter and allows to write single bits.
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Package writer contains the data writer that implements io.Writer, io.ByteWriter and allows to write single bits. |