/usr/include/dcmtk/dcmjpeg/djdecabs.h is in libdcmtk-dev 3.6.1~20160216-4.
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*
* Copyright (C) 1997-2011, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
*
* OFFIS e.V.
* R&D Division Health
* Escherweg 2
* D-26121 Oldenburg, Germany
*
*
* Module: dcmjpeg
*
* Author: Norbert Olges, Marco Eichelberg
*
* Purpose: abstract base class for decompression classes
*
*/
#ifndef DJDECABS_H
#define DJDECABS_H
#include "dcmtk/config/osconfig.h"
#include "dcmtk/dcmdata/dctypes.h"
#include "dcmtk/dcmjpeg/djutils.h" /* for enums */
#include "dcmtk/dcmimgle/diutils.h" /* for EP_Interpretation */
/** abstract base class for decompression classes.
* Implementations of this class must support suspended decompression
* in which compressed data for one frame is fed block by block
* into the decompression routine, see description below.
*/
class DCMTK_DCMJPEG_EXPORT DJDecoder
{
public:
/// default constructor
DJDecoder()
{
}
/// destructor
virtual ~DJDecoder()
{
}
/** initializes internal object structures.
* Must be called before a new frame is decompressed.
* @return EC_Normal if successful, an error code otherwise
*/
virtual OFCondition init() = 0;
/** suspended decompression routine. Decompresses a JPEG frame
* until finished or out of data. Can be called with new data
* until a frame is complete.
* @param compressedFrameBuffer pointer to compressed input data, must not be NULL
* @param compressedFrameBufferSize size of buffer, in bytes
* @param uncompressedFrameBuffer pointer to uncompressed output data, must not be NULL.
* This buffer must not change between multiple decode() calls for a single frame.
* @param uncompressedFrameBufferSize size of buffer, in words???
* Buffer must be large enough to contain a complete frame.
* @param isSigned OFTrue, if uncompressed pixel data is signed, OFFalse otherwise
* @return EC_Normal if successful, EC_Suspend if more data is needed, an error code otherwise.
*/
virtual OFCondition decode(
Uint8 *compressedFrameBuffer,
Uint32 compressedFrameBufferSize,
Uint8 *uncompressedFrameBuffer,
Uint32 uncompressedFrameBufferSize,
OFBool isSigned) = 0;
/** returns the number of bytes per sample that will be written when decoding.
*/
virtual Uint16 bytesPerSample() const = 0;
/** after successful compression,
* returns the color model of the decompressed image
*/
virtual EP_Interpretation getDecompressedColorModel() const = 0;
};
#endif
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