100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
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/*
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*
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* Copyright (C) 1997-2011, OFFIS e.V.
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* All rights reserved. See COPYRIGHT file for details.
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*
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* This software and supporting documentation were developed by
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*
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* OFFIS e.V.
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* R&D Division Health
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* Escherweg 2
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* D-26121 Oldenburg, Germany
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*
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*
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* Module: dcmjpeg
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*
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* Author: Norbert Olges, Marco Eichelberg
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*
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* Purpose: abstract base class for compression classes
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*
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*/
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#ifndef DJENCABS_H
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#define DJENCABS_H
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#include "dcmtk/config/osconfig.h"
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#include "dcmtk/dcmdata/dctypes.h"
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#include "dcmtk/dcmimgle/diutils.h" /* for EP_Interpretation */
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#include "dcmtk/dcmjpeg/djutils.h" /* for enums */
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/** abstract base class for compression classes.
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*/
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class DCMTK_DCMJPEG_EXPORT DJEncoder
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{
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public:
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/// default constructor
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DJEncoder()
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{
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}
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/// destructor
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virtual ~DJEncoder()
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{
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}
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/** single frame compression routine for 16-bit raw pixel data.
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* May only be called if bytesPerSample() == 2.
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* @param columns columns of frame
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* @param rows rows of frame
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* @param interpr photometric interpretation of input frame
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* @param samplesPerPixel samples per pixel of input frame
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* @param image_buffer pointer to frame buffer
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* @param to compressed frame returned in this parameter upon success
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* @param length length of compressed frame (in bytes) returned in this parameter
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* upon success; length guaranteed to be always even.
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* @return EC_Normal if successful, an error code otherwise.
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*/
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virtual OFCondition encode(
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Uint16 columns,
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Uint16 rows,
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EP_Interpretation interpr,
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Uint16 samplesPerPixel,
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Uint16 *image_buffer,
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Uint8 *&to,
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Uint32 &length) = 0;
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/** single frame compression routine for 8-bit raw pixel data.
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* May only be called if bytesPerSample() == 1.
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* @param columns columns of frame
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* @param rows rows of frame
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* @param interpr photometric interpretation of input frame
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* @param samplesPerPixel samples per pixel of input frame
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* @param image_buffer pointer to frame buffer
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* @param to compressed frame returned in this parameter upon success
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* @param length length of compressed frame (in bytes) returned in this parameter
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* upon success; length guaranteed to be always even.
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* @return EC_Normal if successful, an error code otherwise.
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*/
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virtual OFCondition encode(
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Uint16 columns,
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Uint16 rows,
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EP_Interpretation interpr,
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Uint16 samplesPerPixel,
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Uint8 *image_buffer,
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Uint8 *&to,
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Uint32 &length) = 0;
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/** returns the number of bytes per sample that will be expected when encoding.
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*/
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virtual Uint16 bytesPerSample() const = 0;
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/** returns the number of bits per sample that will be expected when encoding.
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*/
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virtual Uint16 bitsPerSample() const = 0;
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};
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#endif
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