Skip navigation links

Package io.scif.media.imageio.stream

Provides ImageInputStream and ImageOutputStream classes for use with the Java Image I/O Framework.

See: Description

Package io.scif.media.imageio.stream Description

Provides ImageInputStream and ImageOutputStream classes for use with the Java Image I/O Framework. The FileChannel-based classes use the new I/O java.nio package to accelerate reading and writing of image data.

FileChannelImageInputStream

FileChannelImageInputStream uses memory mapping and NIO view Buffers to perform its data reading. It may be created by direct instantiation given a FileChannel or via the Java Image I/O plug-in mechanism, for example from ImageIO.createImageInputStream().

A service provider is also registered which creates an ImageInputStream given a ReadableByteChannel. If the ReadableByteChannel is a FileChannel then the ImageInputStream will be a FileChannelImageInputStream. Otherwise an InputStream will be derived from the Channel and wrapped by a FileCacheImageInputStream if a disk cache is being used and does not cause a security violation, or a MemoryCacheImageInputStream if disk caching is disabled or not permitted.

FileChannelImageOutputStream

FileChannelImageOutputStream uses memory mapping and NIO view Buffers to perform its data reading and direct NIO and view Buffers to perform its data writing. It may be created by direct instantiation given a FileChannel or via the Java Image I/O plug-in mechanism, for example from ImageIO.createImageOutputStream().

A service provider is also registered which creates an ImageOutputStream given a WritableByteChannel. If the WritableByteChannel is a FileChannel which has been opened for both reading and writing, then the ImageOutputStream will be a FileChannelImageOutputStream. Otherwise an OutputStream will be derived from the Channel and wrapped by a FileCacheImageOutputStream if a disk cache is being used and does not cause a security violation, or a MemoryCacheImageOutputStream if disk caching is disabled or not permitted.

RawImageInputStream

A RawImageInputStream provides a data input source for the "raw" image format ImageReader plug-in. The RawImageInputStream constructor which requires an InputSource parameter allows an application to use a pre-established XML description of the raw image file. This may be useful in cases where groups of files have the same layout in which case identical or similar XML description files may be re-used. Such a description file would be used to create a FileInputStream from which the InputSource would be created.

SegmentedImageInputStream

A SegmentedImageInputStream provides a contiguous view of another ImageInputStream which itself consists of a sequence of discontiguous segments containing the image data of interest. Such a stream may be used for example in conjunction with a RawImageInputStream to enable reading from a data source which has non-image data interspersed with the image data. For example, an image could be stored in a line-oriented fashion with prefix data such as a time stamp embedded in each line.
Since:
1.0
Skip navigation links

Copyright © 2015–2017 SCIFIO. All rights reserved.