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 /*********************************************************************************/
19 /* ------------------------------------------------------------------- */
20 /* MPEG-4 Util: DecoderSpecificInfo */
21 /* ------------------------------------------------------------------- */
22 /*********************************************************************************/
23 /*
24 This DecoderSpecificInfo Class that holds the Mpeg4 VOL header for the
25 video stream
26 */
27
28 #define __IMPLEMENT_DecoderSpecificInfo__
29
30 #include "decoderspecificinfo.h"
31
32 #include "atomutils.h"
33
34 // Stream-in Constructor
DecoderSpecificInfo(MP4_FF_FILE * fp,bool o3GPPTrack,bool read_struct)35 DecoderSpecificInfo::DecoderSpecificInfo(MP4_FF_FILE *fp, bool o3GPPTrack, bool read_struct)
36 : BaseDescriptor(fp, o3GPPTrack)
37 {
38 _pinfo = NULL;
39 _infoSize = 0;
40
41 if (o3GPPTrack)
42 {
43 return;
44 }
45
46 if (_success)
47 {
48 if (o3GPPTrack)
49 {
50 _infoSize = _sizeOfClass;
51 }
52 else
53 {
54 _infoSize = _sizeOfClass - 1 - getSizeOfSizeField();
55 }
56
57 if (_infoSize > 0)
58 {
59 _pinfo = (uint8 *)oscl_malloc(_infoSize);
60
61 if (read_struct)
62 {
63 if (!AtomUtils::readByteData(fp, _infoSize, _pinfo))
64 {
65 _success = false;
66 _mp4ErrorCode = READ_DECODER_SPECIFIC_INFO_FAILED;
67 }
68 }
69 else
70 {
71 if (!AtomUtils::readByteData(fp, _infoSize, _pinfo))
72 {
73 _success = false;
74 _mp4ErrorCode = READ_DECODER_SPECIFIC_INFO_FAILED;
75 }
76 else
77 {
78 AtomUtils::rewindFilePointerByN(fp, _infoSize);
79 }
80 }
81 }
82 else
83 {
84 _success = false;
85 _mp4ErrorCode = READ_DECODER_SPECIFIC_INFO_FAILED;
86 }
87
88 }
89 else
90 {
91 _mp4ErrorCode = READ_DECODER_SPECIFIC_INFO_FAILED;
92 }
93 }
94
95 // Destructor
~DecoderSpecificInfo()96 DecoderSpecificInfo::~DecoderSpecificInfo()
97 {
98 if (_pinfo != NULL)
99 {
100 oscl_free(_pinfo);
101 }
102 }
103
104
105
106