F:/My Projects/LSEngine/Modules/LSImageLib/Src/Jpeg/LSICio.h

/*
 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2007, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __LSI_CIO_H__
#define __LSI_CIO_H__

#include "../LSIImageLib.h"
#include "LSIJpegCommonStructs.h"

namespace lsi {

        class CCio {
        public :
                // == Types.
                typedef struct opj_cio {
                        CJpegCommonStructs::opj_common_ptr                                              cinfo;

                        LSINT32                                                                                                 openmode;
                        LSUINT8 *                                                                                               buffer;
                        LSINT32                                                                                                 length;

                        LSUINT8 *                                                                                               start;
                        LSUINT8 *                                                                                               end;
                        LSUINT8 *                                                                                               bp;
                } opj_cio_t;

                // == Functions.
                static opj_cio_t * LSE_CALL                                                                     opj_cio_open( CJpegCommonStructs::opj_common_ptr _cpInfoC, LSUINT8 * _pui8Buffer, LSINT32 _i32Length );

                static LSVOID LSE_CALL                                                                          opj_cio_close( opj_cio_t * _pcCio );

                static LSINT32 LSE_CALL                                                                         cio_tell( opj_cio_t * _pcCio );

                static LSVOID LSE_CALL                                                                          cio_seek( opj_cio_t * _pcCio, LSINT32 _i32Pos );
                
                static LSINT32 LSE_CALL                                                                         cio_numbytesleft( opj_cio_t * _pcCio );
                
                static LSUINT8 * LSE_CALL                                                                       cio_getbp( opj_cio_t * _pcCio );
                
                static LSUINT32 LSE_CALL                                                                        cio_write( opj_cio_t * _pcCio, LSUINT32 _i32V, LSUINT32 _ui32N );
                
                static LSUINT32 LSE_CALL                                                                        cio_write( opj_cio_t * _pcCio, LSINT32 _i32V, LSUINT32 _ui32N );
                
                static LSUINT32 LSE_CALL                                                                        cio_read( opj_cio_t * _pcCio, LSUINT32 _ui32N );
                
                static LSVOID LSE_CALL                                                                          cio_skip( opj_cio_t * _pcCio, LSINT32 _i32N );


        protected :
                /*
                 * Write a byte.
                 *
                 * \param _pcCio CIO handle.
                 * \param _ui8V Value to write.
                 */
                static LSBOOL LSE_CALL                                                                          cio_byteout( opj_cio_t * _pcCio, LSUINT8 _ui8V );

                /*
                 * Read a byte.
                 *
                 * \param _pcCio CIO handle.
                 */
                static LSUINT8 LSE_CALL                                                                         cio_bytein( opj_cio_t * _pcCio );
        };

}       // namespace lsi

#endif  // __LSI_CIO_H__