1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
13 * express or implied.
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
17 */
18 #include "editlistatom.h"
19 #include "atomutils.h"
20
21 typedef Oscl_Vector<uint32, OsclMemAllocator> uint32VecType;
22 typedef Oscl_Vector<int32, OsclMemAllocator> int32VecType;
23 typedef Oscl_Vector<uint16, OsclMemAllocator> uint16VecType;
24
25 //WMF
EditListAtom(MP4_FF_FILE * fp,uint32 size,uint32 type)26 EditListAtom::EditListAtom(MP4_FF_FILE *fp, uint32 size, uint32 type)
27 : FullAtom(fp, size, type)
28 {
29 uint32 i = 0, temp = 0;
30 uint16 temp_16;
31
32 _psegmentDurations = NULL;
33 _pmediaTimes = NULL;
34 _pmediaRates = NULL;
35 _preserveds = NULL;
36
37 if (_success)
38 {
39
40 PV_MP4_FF_NEW(fp->auditCB, uint32VecType, (), _psegmentDurations);
41 PV_MP4_FF_NEW(fp->auditCB, int32VecType, (), _pmediaTimes);
42 PV_MP4_FF_NEW(fp->auditCB, uint16VecType, (), _pmediaRates);
43 PV_MP4_FF_NEW(fp->auditCB, uint16VecType, (), _preserveds);
44
45 AtomUtils::read32(fp, _entryCount);
46
47 uint32 dataSize = _size - (DEFAULT_FULL_ATOM_SIZE + 4);
48
49 uint32 entrySize = (4 + 4 + 2 + 2);
50
51 if ((_entryCount*entrySize) > dataSize)
52 {
53 _success = false;
54 _mp4ErrorCode = READ_EDITLIST_ATOM_FAILED;
55 return;
56 }
57
58 for (i = 0; i < _entryCount; i++)
59 {//only assume version 0 by now.
60
61 AtomUtils::read32(fp, temp);
62 (*_psegmentDurations).push_back(temp);
63
64 AtomUtils::read32(fp, temp);
65 (*_pmediaTimes).push_back(temp);
66
67 AtomUtils::read16(fp, temp_16);
68 (*_pmediaRates).push_back(temp_16);
69
70 AtomUtils::read16(fp, temp_16); //just for reserve
71 (*_preserveds).push_back(temp_16);
72
73 }
74 }
75 else
76 {
77 if (_mp4ErrorCode != ATOM_VERSION_NOT_SUPPORTED)
78 _mp4ErrorCode = READ_EDITLIST_ATOM_FAILED;
79 }
80 }
81
getInitialTimeOffset()82 uint32 EditListAtom::getInitialTimeOffset()
83 {
84 if ((_pmediaTimes == NULL) ||
85 (_psegmentDurations == NULL))
86 {
87 return 0;
88 }
89
90 if (_pmediaTimes->size() != 0)
91 {
92 if ((*_pmediaTimes)[0] == -1)
93 {
94 return((*_psegmentDurations)[0]);
95 }
96 else
97 {
98 return 0;
99 }
100 }
101 else
102 {
103 return 0;
104 }
105 }
106
107 // Destructor
~EditListAtom()108 EditListAtom::~EditListAtom()
109 {
110 if (_psegmentDurations != NULL)
111 {
112 PV_MP4_FF_TEMPLATED_DELETE(NULL, uint32VecType, Oscl_Vector, _psegmentDurations);
113 }
114 if (_pmediaTimes != NULL)
115 {
116 PV_MP4_FF_TEMPLATED_DELETE(NULL, int32VecType, Oscl_Vector, _pmediaTimes);
117 }
118 if (_pmediaRates != NULL)
119 {
120 PV_MP4_FF_TEMPLATED_DELETE(NULL, uint16VecType, Oscl_Vector, _pmediaRates);
121 }
122 if (_preserveds != NULL)
123 {
124 PV_MP4_FF_TEMPLATED_DELETE(NULL, uint16VecType, Oscl_Vector, _preserveds);
125 }
126 }
127