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 #define IMPLEMENT__AVCLayerDescEntry
19
20 #include "avcsubseqdescriptionentry.h"
21 #include "atomutils.h"
22 #include "atomdefs.h"
23
AVCSubSequenceEntry(MP4_FF_FILE * fp,uint32 size,uint32 type)24 AVCSubSequenceEntry::AVCSubSequenceEntry(MP4_FF_FILE *fp, uint32 size, uint32 type)
25 : Atom(fp, size, type)
26 {
27 if (_success)
28 {
29 if (!AtomUtils::read16(fp, _subSequenceIdentifier))
30 {
31 _success = false;
32 }
33 if (!AtomUtils::read8(fp, _layerNumber))
34 {
35 _success = false;
36 }
37
38 if (!AtomUtils::read8(fp, _reserved))
39 {
40 _success = false;
41 }
42
43 _durationFlag = (uint8)(_reserved & ~0x7F);
44 _avgRateFlag = (uint8)(_reserved & ~0xBF);
45
46 if (_durationFlag)
47 {
48 if (!AtomUtils::read32(fp, _duration))
49 {
50 _success = false;
51 }
52 }
53 if (_avgRateFlag)
54 {
55 if (!AtomUtils::read8(fp, _accurateStatisticsFlag))
56 {
57 _success = false;
58 }
59 if (!AtomUtils::read16(fp, _avgBitRate))
60 {
61 _success = false;
62 }
63 if (!AtomUtils::read16(fp, _avgFrameRate))
64 {
65 _success = false;
66 }
67 }
68 if (!AtomUtils::read8(fp, numReferences))
69 {
70 _success = false;
71 }
72
73 PV_MP4_FF_NEW(fp->auditCB, DependencyInfo, (fp), dependencyinfo);
74
75 if (dependencyinfo == NULL)
76 {
77 _success = false;
78 }
79 }
80 if (!_success)
81 {
82 _mp4ErrorCode = READ_AVC_SUBSEQUENCE_DESCRIPTION_BOX_FAILED;
83 }
84 }
85
DependencyInfo(MP4_FF_FILE * fp)86 DependencyInfo::DependencyInfo(MP4_FF_FILE *fp)
87 {
88 _subSeqCount = 0;
89 _layerNumber = 0;
90 _subSequenceIdentifier = 0;
91
92 if (!AtomUtils::read8(fp, _subSeqCount))
93 {
94 return;
95 }
96 if (!AtomUtils::read8(fp, _layerNumber))
97 {
98 return;
99 }
100 if (!AtomUtils::read16(fp, _subSequenceIdentifier))
101 {
102 return;
103 }
104 }
105
106 // Destructor
~AVCSubSequenceEntry()107 AVCSubSequenceEntry::~AVCSubSequenceEntry()
108 {
109 if (dependencyinfo)
110 PV_MP4_FF_DELETE(NULL, DependencyInfo, dependencyinfo);
111 }
112