[trunk] improve memory management (fixes issue 359)
[openjpeg.git] / src / lib / openjp2 / function_list.c
1 /*
2  * The copyright in this software is being made available under the 2-clauses 
3  * BSD License, included below. This software may be subject to other third 
4  * party and contributor rights, including patent rights, and no such rights
5  * are granted under this license.
6  *
7  * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31
32 #include "opj_includes.h"
33
34 /**
35  * Default size of the validation list, if not sufficient, data will be reallocated with a double size.
36  */
37 #define OPJ_VALIDATION_SIZE 10
38
39 opj_procedure_list_t *  opj_procedure_list_create()
40 {
41         /* memory allocation */
42         opj_procedure_list_t * l_validation = (opj_procedure_list_t *) opj_calloc(1,sizeof(opj_procedure_list_t));
43         if (! l_validation)
44         {
45                 return 00;
46         }
47         /* initialization */
48         l_validation->m_nb_max_procedures = OPJ_VALIDATION_SIZE;
49         l_validation->m_procedures = (opj_procedure*)opj_calloc(OPJ_VALIDATION_SIZE, sizeof(opj_procedure));
50         if (! l_validation->m_procedures)
51         {
52                 opj_free(l_validation);
53                 return 00;
54         }
55         return l_validation;
56 }
57
58 void  opj_procedure_list_destroy(opj_procedure_list_t * p_list)
59 {
60         if (! p_list)
61         {
62                 return;
63         }
64         /* initialization */
65         if (p_list->m_procedures)
66         {
67                 opj_free(p_list->m_procedures);
68         }
69         opj_free(p_list);
70 }
71
72 OPJ_BOOL opj_procedure_list_add_procedure (opj_procedure_list_t * p_validation_list, opj_procedure p_procedure)
73 {
74         if (p_validation_list->m_nb_max_procedures == p_validation_list->m_nb_procedures)
75         {
76                 opj_procedure * new_procedures;
77
78                 p_validation_list->m_nb_max_procedures += OPJ_VALIDATION_SIZE;
79                 new_procedures = (opj_procedure*)opj_realloc(
80                         p_validation_list->m_procedures,
81                         p_validation_list->m_nb_max_procedures * sizeof(opj_procedure));
82                 if (! new_procedures)
83                 {
84                         opj_free(p_validation_list->m_procedures);
85                         p_validation_list->m_nb_max_procedures = 0;
86                         p_validation_list->m_nb_procedures = 0;
87                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to add a new validation procedure\n"); */
88                         fprintf(stderr, "Not enough memory to add a new validation procedure\n");
89                         
90                         return OPJ_FALSE;
91                 }
92                 else
93                 {
94                         p_validation_list->m_procedures = new_procedures;
95                 }
96         }
97         p_validation_list->m_procedures[p_validation_list->m_nb_procedures] = p_procedure;
98         ++p_validation_list->m_nb_procedures;
99
100         return OPJ_TRUE;
101 }
102
103 OPJ_UINT32 opj_procedure_list_get_nb_procedures (opj_procedure_list_t * p_validation_list)
104 {
105         return p_validation_list->m_nb_procedures;
106 }
107
108 opj_procedure* opj_procedure_list_get_first_procedure (opj_procedure_list_t * p_validation_list)
109 {
110         return p_validation_list->m_procedures;
111 }
112
113 void opj_procedure_list_clear (opj_procedure_list_t * p_validation_list)
114 {
115         p_validation_list->m_nb_procedures = 0;
116 }