cio.h

Go to the documentation of this file.

/*
 * The copyright in this software is being made available under the 2-clauses 
 * BSD License, included below. This software may be subject to other third 
 * party and contributor rights, including patent rights, and no such rights
 * are granted under this license.
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux 
 * Copyright (c) 2003-2014, Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR 
 * Copyright (c) 2012, CS Systemes d'Information, France
 * 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 __CIO_H
#define __CIO_H


#include "opj_config_private.h"

/* ----------------------------------------------------------------------- */

#if defined(OPJ_BIG_ENDIAN)
        #define opj_write_bytes         opj_write_bytes_BE
        #define opj_read_bytes          opj_read_bytes_BE
        #define opj_write_double        opj_write_double_BE
        #define opj_read_double         opj_read_double_BE
        #define opj_write_float         opj_write_float_BE
        #define opj_read_float          opj_read_float_BE
#else
        #define opj_write_bytes         opj_write_bytes_LE
        #define opj_read_bytes          opj_read_bytes_LE
        #define opj_write_double        opj_write_double_LE
        #define opj_read_double         opj_read_double_LE
        #define opj_write_float         opj_write_float_LE
        #define opj_read_float          opj_read_float_LE
#endif



typedef enum
{
        opj_signed_sentinel             = -1, /* do not use in code */
        opj_stream_e_output             = 0x1,
        opj_stream_e_input              = 0x2,
        opj_stream_e_end                = 0x4,
        opj_stream_e_error              = 0x8
}
opj_stream_flag ;

typedef struct opj_stream_private
{
        void *                                  m_user_data;

        opj_stream_free_user_data_fn            m_free_user_data_fn;

        OPJ_UINT64                              m_user_data_length;

        opj_stream_read_fn              m_read_fn;

        opj_stream_write_fn             m_write_fn;

        opj_stream_skip_fn              m_skip_fn;

        opj_stream_seek_fn              m_seek_fn;

        OPJ_BYTE *                                      m_stored_data;

        OPJ_BYTE *                                      m_current_data;

        OPJ_OFF_T (* m_opj_skip)(struct opj_stream_private * ,OPJ_OFF_T , struct opj_event_mgr *);

        OPJ_BOOL (* m_opj_seek) (struct opj_stream_private * , OPJ_OFF_T , struct opj_event_mgr *);

        OPJ_SIZE_T                      m_bytes_in_buffer;

        OPJ_OFF_T                       m_byte_offset;

        OPJ_SIZE_T                      m_buffer_size;

        opj_stream_flag m_status;

}
opj_stream_private_t;

/* ----------------------------------------------------------------------- */
void opj_write_bytes_BE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_nb_bytes);

void opj_read_bytes_BE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT32 p_nb_bytes);

void opj_write_bytes_LE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_nb_bytes);

void opj_read_bytes_LE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT32 p_nb_bytes);


void opj_write_double_LE(OPJ_BYTE * p_buffer, OPJ_FLOAT64 p_value);

/***
 * Write some bytes to the given data buffer, this function is used in Big Endian cpus.
 * @param p_buffer              pointer the data buffer to write data to.
 * @param p_value               the value to write
 */
void opj_write_double_BE(OPJ_BYTE * p_buffer, OPJ_FLOAT64 p_value);

void opj_read_double_LE(const OPJ_BYTE * p_buffer, OPJ_FLOAT64 * p_value);

void opj_read_double_BE(const OPJ_BYTE * p_buffer, OPJ_FLOAT64 * p_value);

void opj_read_float_LE(const OPJ_BYTE * p_buffer, OPJ_FLOAT32 * p_value);

void opj_read_float_BE(const OPJ_BYTE * p_buffer, OPJ_FLOAT32 * p_value);

void opj_write_float_LE(OPJ_BYTE * p_buffer, OPJ_FLOAT32 p_value);

/***
 * Write some bytes to the given data buffer, this function is used in Big Endian cpus.
 * @param p_buffer              pointer the data buffer to write data to.
 * @param p_value               the value to write
 */
void opj_write_float_BE(OPJ_BYTE * p_buffer, OPJ_FLOAT32 p_value);

OPJ_SIZE_T opj_stream_read_data (opj_stream_private_t * p_stream,OPJ_BYTE * p_buffer, OPJ_SIZE_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_SIZE_T opj_stream_write_data (opj_stream_private_t * p_stream,const OPJ_BYTE * p_buffer, OPJ_SIZE_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_BOOL opj_stream_flush (opj_stream_private_t * p_stream, struct opj_event_mgr * p_event_mgr);

OPJ_OFF_T opj_stream_skip (opj_stream_private_t * p_stream,OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_OFF_T opj_stream_tell (const opj_stream_private_t * p_stream);


OPJ_OFF_T opj_stream_get_number_byte_left (const opj_stream_private_t * p_stream);

OPJ_OFF_T opj_stream_write_skip (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_OFF_T opj_stream_read_skip (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_BOOL opj_stream_read_seek (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_BOOL opj_stream_write_seek (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_BOOL opj_stream_seek (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);

OPJ_BOOL opj_stream_has_seek (const opj_stream_private_t * p_stream);

OPJ_SIZE_T opj_stream_default_read (void * p_buffer, OPJ_SIZE_T p_nb_bytes, void * p_user_data);

OPJ_SIZE_T opj_stream_default_write (void * p_buffer, OPJ_SIZE_T p_nb_bytes, void * p_user_data);

OPJ_OFF_T opj_stream_default_skip (OPJ_OFF_T p_nb_bytes, void * p_user_data);

OPJ_BOOL opj_stream_default_seek (OPJ_OFF_T p_nb_bytes, void * p_user_data);

/* ----------------------------------------------------------------------- */


#endif /* __CIO_H */