1 /*
2 * The contents of this file are subject to the Mozilla Public
3 * License Version 1.1 (the "License"); you may not use this file
4 * except in compliance with the License. You may obtain a copy of
5 * the License at http://www.mozilla.org/MPL/
6 *
7 * Software distributed under the License is distributed on an "AS
8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
9 * implied. See the License for the specific language governing
10 * rights and limitations under the License.
11 *
12 * The Original Code is MPEG4IP.
13 *
14 * The Initial Developer of the Original Code is Cisco Systems Inc.
15 * Portions created by Cisco Systems Inc. are
16 * Copyright (C) Cisco Systems Inc. 2004. All Rights Reserved.
17 *
18 * Contributor(s):
19 * Bill May wmay@cisco.com
20 */
21
22 #include "mp4common.h"
23
MP4Avc1Atom()24 MP4Avc1Atom::MP4Avc1Atom()
25 : MP4Atom("avc1")
26 {
27 AddReserved("reserved1", 6); /* 0 */
28
29 AddProperty( /* 1 */
30 new MP4Integer16Property("dataReferenceIndex"));
31
32 AddReserved("reserved2", 16); /* 2 */
33
34 AddProperty( /* 3 */
35 new MP4Integer16Property("width"));
36 AddProperty( /* 4 */
37 new MP4Integer16Property("height"));
38
39 AddReserved("reserved3", 14); /* 5 */
40
41 MP4StringProperty* pProp =
42 new MP4StringProperty("compressorName");
43 pProp->SetFixedLength(32);
44 pProp->SetValue("AVC Coding");
45 AddProperty(pProp); /* 6 */
46
47 AddReserved("reserved4", 4); /* 7 */
48
49 ExpectChildAtom("avcC", Required, OnlyOne);
50 ExpectChildAtom("btrt", Optional, OnlyOne);
51 // for now ExpectChildAtom("m4ds", Optional, OnlyOne);
52 }
53
Generate()54 void MP4Avc1Atom::Generate()
55 {
56 MP4Atom::Generate();
57
58 ((MP4Integer16Property*)m_pProperties[1])->SetValue(1);
59
60 // property reserved3 has non-zero fixed values
61 static u_int8_t reserved3[14] = {
62 0x00, 0x48, 0x00, 0x00,
63 0x00, 0x48, 0x00, 0x00,
64 0x00, 0x00, 0x00, 0x00,
65 0x00, 0x01,
66 };
67 m_pProperties[5]->SetReadOnly(false);
68 ((MP4BytesProperty*)m_pProperties[5])->
69 SetValue(reserved3, sizeof(reserved3));
70 m_pProperties[5]->SetReadOnly(true);
71
72 // property reserved4 has non-zero fixed values
73 static u_int8_t reserved4[4] = {
74 0x00, 0x18, 0xFF, 0xFF,
75 };
76 m_pProperties[7]->SetReadOnly(false);
77 ((MP4BytesProperty*)m_pProperties[7])->
78 SetValue(reserved4, sizeof(reserved4));
79 m_pProperties[7]->SetReadOnly(true);
80 }
81
82