javax.imageio.stream.MemoryCacheImageInputStream
An implementation of ImageInputStream that gets its input from a regular InputStream. A memory buffer is used to cache at least the data between the discard position and the current read position.
In general, it is preferable to use a FileCacheImageInputStream when reading from a regular InputStream. This class is provided for cases where it is not possible to create a writable temporary file.
An implementation of ImageInputStream that gets its input from a regular InputStream. A memory buffer is used to cache at least the data between the discard position and the current read position. In general, it is preferable to use a FileCacheImageInputStream when reading from a regular InputStream. This class is provided for cases where it is not possible to create a writable temporary file.
->memory-cache-image-input-streamclj
(->memory-cache-image-input-stream stream)Constructor.
Constructs a MemoryCacheImageInputStream that will read from a given InputStream.
stream - an InputStream to read from. - java.io.InputStream
throws: java.lang.IllegalArgumentException - if stream is null.
Constructor. Constructs a MemoryCacheImageInputStream that will read from a given InputStream. stream - an InputStream to read from. - `java.io.InputStream` throws: java.lang.IllegalArgumentException - if stream is null.
cached-file?clj
(cached-file? this)Returns false since this ImageInputStream does not maintain a file cache.
returns: false. - boolean
Returns false since this ImageInputStream does not maintain a file cache. returns: false. - `boolean`
cached-memory?clj
(cached-memory? this)Returns true since this ImageInputStream maintains a main memory cache.
returns: true. - boolean
Returns true since this ImageInputStream maintains a main memory cache. returns: true. - `boolean`
cached?clj
(cached? this)Returns true since this ImageInputStream caches data in order to allow seeking backwards.
returns: true. - boolean
Returns true since this ImageInputStream caches data in order to allow seeking backwards. returns: true. - `boolean`
closeclj
(close this)Closes this MemoryCacheImageInputStream, freeing the cache. The source InputStream is not closed.
throws: java.io.IOException - if an I/O error occurs.
Closes this MemoryCacheImageInputStream, freeing the cache. The source InputStream is not closed. throws: java.io.IOException - if an I/O error occurs.
flush-beforeclj
(flush-before this pos)Description copied from interface: ImageInputStream
pos - a long containing the length of the stream prefix that may be flushed. - long
throws: java.io.IOException - if an I/O error occurs.
Description copied from interface: ImageInputStream pos - a long containing the length of the stream prefix that may be flushed. - `long` throws: java.io.IOException - if an I/O error occurs.
readclj
(read this)(read this b off len)Description copied from class: ImageInputStreamImpl
b - an array of bytes to be written to. - byte[]
off - the starting position within b to write to. - int
len - the maximum number of bytes to read. - int
returns: the number of bytes actually read, or -1
to indicate EOF. - int
throws: java.io.IOException - if an I/O error occurs.
Description copied from class: ImageInputStreamImpl b - an array of bytes to be written to. - `byte[]` off - the starting position within b to write to. - `int` len - the maximum number of bytes to read. - `int` returns: the number of bytes actually read, or -1 to indicate EOF. - `int` throws: java.io.IOException - if an I/O error occurs.
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