openjpeg/libopenjpeg/function_list.c

/*
 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
 * 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.
 */

#include "opj_includes.h"

/**
 * Default size of the validation list, if not sufficient, data will be reallocated with a double size.
 */
#define OPJ_VALIDATION_SIZE 10

/**
 * Creates a validation list.
 *
 * @return	the newly created validation list.
 */
opj_procedure_list_t *  opj_procedure_list_create()
{
	/* memory allocation */
	opj_procedure_list_t * l_validation = (opj_procedure_list_t *) opj_malloc(sizeof(opj_procedure_list_t));
	if
		(! l_validation)
	{
		return 00;
	}
	/* initialization */
	memset(l_validation,0,sizeof(opj_procedure_list_t));
	l_validation->m_nb_max_procedures = OPJ_VALIDATION_SIZE;
	l_validation->m_procedures = (opj_procedure*)opj_malloc(
		OPJ_VALIDATION_SIZE * sizeof(opj_procedure));
	if
		(! l_validation->m_procedures)
	{
		opj_free(l_validation);
		return 00;
	}
	memset(l_validation->m_procedures,0,OPJ_VALIDATION_SIZE * sizeof(opj_procedure));
	return l_validation;
}



/**
 * Destroys a validation list.
 *
 * @param p_list the list to destroy.
 */
void  opj_procedure_list_destroy(opj_procedure_list_t * p_list)
{
	if
		(! p_list)
	{
		return;
	}
	/* initialization */
	if
		(p_list->m_procedures)
	{
		opj_free(p_list->m_procedures);
	}
	opj_free(p_list);
}

/**
 * Adds a new validation procedure.
 *
 * @param	p_validation_list the list of procedure to modify.
 * @param	p_procedure		the procedure to add.
 */
opj_bool  opj_procedure_list_add_procedure (opj_procedure_list_t * p_validation_list, opj_procedure p_procedure)
{
	if
		(p_validation_list->m_nb_max_procedures == p_validation_list->m_nb_procedures)
	{
         opj_procedure * new_procedures;

		p_validation_list->m_nb_max_procedures += OPJ_VALIDATION_SIZE;
                new_procedures = (opj_procedure*)opj_realloc(
		p_validation_list->m_procedures,p_validation_list->m_nb_max_procedures * sizeof(opj_procedure));
		if
			(! new_procedures)
		{
			opj_free(p_validation_list->m_procedures);
			p_validation_list->m_nb_max_procedures = 0;
			p_validation_list->m_nb_procedures = 0;
			return OPJ_FALSE;
		}
                else
                {
			p_validation_list->m_procedures = new_procedures;
                }
	}
	p_validation_list->m_procedures[p_validation_list->m_nb_procedures] = p_procedure;
	++p_validation_list->m_nb_procedures;
	return OPJ_TRUE;
}

/**
 * Gets the number of validation procedures.
 *
 * @param	p_validation_list the list of procedure to modify.
 *
 * @return the number of validation procedures.
 */
OPJ_UINT32 opj_procedure_list_get_nb_procedures (opj_procedure_list_t * p_validation_list)
{
	return p_validation_list->m_nb_procedures;
}

/**
 * Gets the pointer on the first validation procedure. This function is similar to the C++
 * iterator class to iterate through all the procedures inside the validation list.
 * the caller does not take ownership of the pointer.
 *
 * @param	p_validation_list the list of procedure to get the first procedure from.
 *
 * @return	a pointer to the first procedure.
 */
opj_procedure* opj_procedure_list_get_first_procedure (opj_procedure_list_t * p_validation_list)
{
	return p_validation_list->m_procedures;
}

/**
 * Clears the list of validation procedures.
 *
 * @param	p_validation_list the list of procedure to clear.
 *
 */
void  opj_procedure_list_clear (opj_procedure_list_t * p_validation_list)
{
	p_validation_list->m_nb_procedures = 0;
}