Public Member Functions
	vil_jpeg_decompressor (vil_stream *s)
	using jpeg decompressor objects :.
	~vil_jpeg_decompressor ()
	NB.
JSAMPLE const *	read_scanline (unsigned line)
	Do not delete the return value.
Public Attributes
struct jpeg_error_mgr	jerr
struct jpeg_decompress_struct	jobj
vil_stream *	stream
Private Attributes
bool	ready
bool	valid
JSAMPLE *	biffer

Detailed Description

Definition at line 18 of file vil_jpeg_decompressor.h.

Constructor & Destructor Documentation

vil_jpeg_decompressor::vil_jpeg_decompressor ( vil_stream * s )

using jpeg decompressor objects :.

supply an error manager, e.g. with jpeg_std_err(). this must be done before initializing the object.
initialize with jpeg_create_decompress().
supply a data stream, e.g. with jpeg_std_source().
call jpeg_read_header() to start reading the data stream. this will read to the start of the compressed data and store various tables and parameters. if you just want the image parameters and not the data, it's ok to stop now, so long as you call jpeg_abort_decompress() or jpeg_destroy_decompress() to release resources.
call jpeg_finish_decompress() if you read all the data. if you only read some of the data, call jpeg_abort_decompress().
destruct the object with jpeg_destroy_decompress().

Definition at line 35 of file vil_jpeg_decompressor.cxx.

vil_jpeg_decompressor::~vil_jpeg_decompressor ( )

NB.

does not delete the stream.

Definition at line 152 of file vil_jpeg_decompressor.cxx.