diff options
Diffstat (limited to 'debian/mp4v2/mp4v2-2.0.0~dfsg0/src/atom_sound.cpp')
-rw-r--r-- | debian/mp4v2/mp4v2-2.0.0~dfsg0/src/atom_sound.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/debian/mp4v2/mp4v2-2.0.0~dfsg0/src/atom_sound.cpp b/debian/mp4v2/mp4v2-2.0.0~dfsg0/src/atom_sound.cpp new file mode 100644 index 00000000..368f4318 --- /dev/null +++ b/debian/mp4v2/mp4v2-2.0.0~dfsg0/src/atom_sound.cpp @@ -0,0 +1,139 @@ +/* + * 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. 2004. All Rights Reserved. + * + * Contributor(s): + * Bill May [email protected] + */ + +#include "src/impl.h" + +namespace mp4v2 { +namespace impl { + +/////////////////////////////////////////////////////////////////////////////// + +MP4SoundAtom::MP4SoundAtom(MP4File &file, const char *atomid) + : MP4Atom(file, atomid) +{ + AddReserved(*this, "reserved1", 6); /* 0 */ + + AddProperty( /* 1 */ + new MP4Integer16Property(*this, "dataReferenceIndex")); + AddProperty( /* 2 */ + new MP4Integer16Property(*this, "soundVersion")); + AddReserved( *this, "reserved2", 6); /* 3 */ + + AddProperty( /* 4 */ + new MP4Integer16Property(*this, "channels")); + AddProperty( /* 5 */ + new MP4Integer16Property(*this, "sampleSize")); + AddProperty( /* 6 */ + new MP4Integer16Property(*this, "compressionId")); + AddProperty( /* 7 */ + new MP4Integer16Property(*this, "packetSize")); + AddProperty( /* 8 */ + new MP4Integer32Property(*this, "timeScale")); + + if (ATOMID(atomid) == ATOMID("mp4a")) { + ExpectChildAtom("esds", Required, OnlyOne); + ExpectChildAtom("wave", Optional, OnlyOne); + } else if (ATOMID(atomid) == ATOMID("alac")) { + ExpectChildAtom("alac", Optional, Optional); + //AddProperty( new MP4BytesProperty(*this, "alacInfo", 36)); + } +} + +void MP4SoundAtom::AddProperties (uint8_t version) +{ + if (version > 0) { + AddProperty( /* 9 */ + new MP4Integer32Property(*this, "samplesPerPacket")); + AddProperty( /* 10 */ + new MP4Integer32Property(*this, "bytesPerPacket")); + AddProperty( /* 11 */ + new MP4Integer32Property(*this, "bytesPerFrame")); + AddProperty( /* 12 */ + new MP4Integer32Property(*this, "bytesPerSample")); + } + if (version == 2) { + AddReserved(*this, "reserved4", 20); + } +} +void MP4SoundAtom::Generate() +{ + MP4Atom::Generate(); + + ((MP4Integer16Property*)m_pProperties[1])->SetValue(1); + ((MP4Integer16Property*)m_pProperties[2])->SetValue(0); + + // property reserved2 has non-zero fixed values + static const uint8_t reserved2[6] = { + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, + }; + m_pProperties[3]->SetReadOnly(false); + ((MP4BytesProperty*)m_pProperties[3])-> + SetValue(reserved2, sizeof(reserved2)); + m_pProperties[3]->SetReadOnly(true); + ((MP4Integer16Property*)m_pProperties[4])->SetValue(2); + ((MP4Integer16Property*)m_pProperties[5])->SetValue(0x0010); + ((MP4Integer16Property*)m_pProperties[6])->SetValue(0); + +} + +void MP4SoundAtom::Read() +{ + MP4Atom *parent = GetParentAtom(); + if (ATOMID(parent->GetType()) != ATOMID("stsd")) { + // Quicktime has an interesting thing - they'll put an mp4a atom + // which is blank inside a wave atom, which is inside an mp4a atom + // we have a mp4a inside an wave inside an mp4a - delete all properties + for(int i = 0; i < 9; ++ i) + delete m_pProperties[i]; // make sure we delete the properties themselves, then remove from m_pProperties + + m_pProperties.Delete(8); + m_pProperties.Delete(7); + m_pProperties.Delete(6); + m_pProperties.Delete(5); + m_pProperties.Delete(4); + m_pProperties.Delete(3); + m_pProperties.Delete(2); + m_pProperties.Delete(1); + m_pProperties.Delete(0); + + if (ATOMID(GetType()) == ATOMID("alac")) { + AddProperty(new MP4BytesProperty(*this, "decoderConfig", m_size)); + ReadProperties(); + } + if (m_pChildAtomInfos.Size() > 0) { + ReadChildAtoms(); + } + } else { + ReadProperties(0, 3); // read first 3 properties + AddProperties(((MP4IntegerProperty *)m_pProperties[2])->GetValue()); + ReadProperties(3); // continue + if (m_pChildAtomInfos.Size() > 0) { + ReadChildAtoms(); + } + } + Skip(); +} + +/////////////////////////////////////////////////////////////////////////////// + +} +} // namespace mp4v2::impl |