| /* |
| * The contents of this file are subject to the Mozilla Public |
| * License Version 1.1 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS |
| * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * rights and limitations under the License. |
| * |
| * The Original Code is MPEG4IP. |
| * |
| * The Initial Developer of the Original Code is Cisco Systems Inc. |
| * Portions created by Cisco Systems Inc. are |
| * Copyright (C) Cisco Systems Inc. 2001. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Dave Mackie dmackie@cisco.com |
| */ |
| |
| #include "src/impl.h" |
| |
| namespace mp4v2 { |
| namespace impl { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| MP4MvhdAtom::MP4MvhdAtom(MP4File &file) |
| : MP4Atom(file, "mvhd") |
| { |
| AddVersionAndFlags(); |
| } |
| |
| void MP4MvhdAtom::AddProperties(uint8_t version) |
| { |
| if (version == 1) { |
| AddProperty( /* 2 */ |
| new MP4Integer64Property(*this, "creationTime")); |
| AddProperty( /* 3 */ |
| new MP4Integer64Property(*this, "modificationTime")); |
| } else { |
| AddProperty( /* 2 */ |
| new MP4Integer32Property(*this, "creationTime")); |
| AddProperty( /* 3 */ |
| new MP4Integer32Property(*this, "modificationTime")); |
| } |
| |
| AddProperty( /* 4 */ |
| new MP4Integer32Property(*this, "timeScale")); |
| |
| if (version == 1) { |
| AddProperty( /* 5 */ |
| new MP4Integer64Property(*this, "duration")); |
| } else { |
| AddProperty( /* 5 */ |
| new MP4Integer32Property(*this, "duration")); |
| } |
| |
| MP4Float32Property* pProp; |
| |
| pProp = new MP4Float32Property(*this, "rate"); |
| pProp->SetFixed32Format(); |
| AddProperty(pProp); /* 6 */ |
| |
| pProp = new MP4Float32Property(*this, "volume"); |
| pProp->SetFixed16Format(); |
| AddProperty(pProp); /* 7 */ |
| |
| AddReserved(*this, "reserved1", 70); /* 8 */ |
| |
| AddProperty( /* 9 */ |
| new MP4Integer32Property(*this, "nextTrackId")); |
| } |
| |
| void MP4MvhdAtom::Generate() |
| { |
| uint8_t version = m_File.Use64Bits(GetType()) ? 1 : 0; |
| SetVersion(version); |
| AddProperties(version); |
| |
| MP4Atom::Generate(); |
| |
| // set creation and modification times |
| MP4Timestamp now = MP4GetAbsTimestamp(); |
| if (version == 1) { |
| ((MP4Integer64Property*)m_pProperties[2])->SetValue(now); |
| ((MP4Integer64Property*)m_pProperties[3])->SetValue(now); |
| } else { |
| ((MP4Integer32Property*)m_pProperties[2])->SetValue(now); |
| ((MP4Integer32Property*)m_pProperties[3])->SetValue(now); |
| } |
| |
| ((MP4Integer32Property*)m_pProperties[4])->SetValue(1000); |
| |
| ((MP4Float32Property*)m_pProperties[6])->SetValue(1.0); |
| ((MP4Float32Property*)m_pProperties[7])->SetValue(1.0); |
| |
| // property reserved has non-zero fixed values |
| static uint8_t reserved[70] = { |
| 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x01, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x01, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x40, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, |
| }; |
| m_pProperties[8]->SetReadOnly(false); |
| ((MP4BytesProperty*)m_pProperties[8])-> |
| SetValue(reserved, sizeof(reserved)); |
| m_pProperties[8]->SetReadOnly(true); |
| |
| // set next track id |
| ((MP4Integer32Property*)m_pProperties[9])->SetValue(1); |
| } |
| |
| void MP4MvhdAtom::Read() |
| { |
| /* read atom version */ |
| ReadProperties(0, 1); |
| |
| /* need to create the properties based on the atom version */ |
| AddProperties(GetVersion()); |
| |
| /* now we can read the remaining properties */ |
| ReadProperties(1); |
| |
| Skip(); // to end of atom |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| } |
| } // namespace mp4v2::impl |