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AP_AtomDefinitions.h
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AP_AtomDefinitions.h
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//==================================================================//
/*
AtomicParsley - AP_AtomDefinitions.h
AtomicParsley is GPL software; you can freely distribute,
redistribute, modify & use under the terms of the GNU General
Public License; either version 2 or its successor.
AtomicParsley is distributed under the GPL "AS IS", without
any warranty; without the implied warranty of merchantability
or fitness for either an expressed or implied particular purpose.
Please see the included GNU General Public License (GPL) for
your rights and further details; see the file COPYING. If you
cannot, write to the Free Software Foundation, 59 Temple Place
Suite 330, Boston, MA 02111-1307, USA. Or www.fsf.org
Copyright ©2006 puck_lock
*/
//==================================================================//
#ifndef ATOM_DEFINITION_H
#define ATOM_DEFINITION_H
enum {
PARENT_ATOM = 0, //container atom
SIMPLE_PARENT_ATOM = 1,
DUAL_STATE_ATOM = 2, //acts as both parent (contains other atoms) & child (carries data)
CHILD_ATOM = 3, //atom that does NOT contain any children
UNKNOWN_ATOM_TYPE = 4
};
enum {
REQUIRED_ONCE = 30, //means total of 1 atom per file (or total of 1 if parent atom is required to be present)
REQUIRED_ONE = 31, //means 1 atom per container atom; totalling many per file (or required present if optional parent atom is present)
REQUIRED_VARIABLE = 32, //means 1 or more atoms per container atom are required to be present
PARENT_SPECIFIC = 33, //means (iTunes-style metadata) the atom defines how many are present; most are MAX 1 'data' atoms; 'covr' is ?unlimited?
OPTIONAL_ONCE = 34, //means total of 1 atom per file, but not required
OPTIONAL_ONE = 35, //means 1 atom per container atom but not required; many may be present in a file
OPTIONAL_MANY = 36, //means more than 1 occurrence per container atom
REQ_FAMILIAL_ONE = OPTIONAL_ONE, //means that one of the family of atoms defined by the spec is required by the parent atom
UKNOWN_REQUIREMENTS= 38
};
enum {
SIMPLE_ATOM = 50,
VERSIONED_ATOM = 51,
EXTENDED_ATOM = 52,
PACKED_LANG_ATOM = 53,
UNKNOWN_ATOM = 59
};
typedef struct {
const char* known_atom_name;
const char* known_parent_atoms[5]; //max known to be tested
unsigned int container_state;
int presence_requirements;
unsigned int box_type;
} AtomDefinition;
AtomDefinition knownAtoms[] = {
//name parent atom(s) container number box_type
{"<()>", {"_ANY_LEVEL"}, UNKNOWN_ATOM_TYPE, UKNOWN_REQUIREMENTS, UNKNOWN_ATOM }, //our unknown atom (self-defined)
{"ftyp", {"FILE_LEVEL"}, CHILD_ATOM, REQUIRED_ONCE, SIMPLE_ATOM },
{"moov", {"FILE_LEVEL"}, PARENT_ATOM, REQUIRED_ONCE, SIMPLE_ATOM },
{"mdat", {"FILE_LEVEL"}, CHILD_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"pdin", {"FILE_LEVEL"}, CHILD_ATOM, OPTIONAL_ONCE, VERSIONED_ATOM },
{"moof", {"FILE_LEVEL"}, PARENT_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"mfhd", {"moof"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"traf", {"moof"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"tfhd", {"traf"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"trun", {"traf"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"mfra", {"FILE_LEVEL"}, PARENT_ATOM, OPTIONAL_ONCE, SIMPLE_ATOM },
{"tfra", {"mfra"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"mfro", {"mfra"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"free", {"_ANY_LEVEL"}, CHILD_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"skip", {"_ANY_LEVEL"}, CHILD_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"uuid", {"_ANY_LEVEL"}, CHILD_ATOM, REQUIRED_ONCE, EXTENDED_ATOM },
{"mvhd", {"moov"}, CHILD_ATOM, REQUIRED_ONCE, VERSIONED_ATOM },
{"iods", {"moov"}, CHILD_ATOM, OPTIONAL_ONCE, VERSIONED_ATOM },
{"drm ", {"moov"}, CHILD_ATOM, OPTIONAL_ONCE, VERSIONED_ATOM }, // 3gp/MobileMP4
{"trak", {"moov"}, PARENT_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"tkhd", {"trak"}, CHILD_ATOM, OPTIONAL_MANY, VERSIONED_ATOM },
{"tref", {"trak"}, PARENT_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"mdia", {"trak"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"tapt", {"trak"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"clef", {"tapt"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"prof", {"tapt"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"enof", {"tapt"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"mdhd", {"mdia"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"minf", {"mdia"}, PARENT_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"hdlr", {"mdia", "meta", "minf"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM }, //minf parent present in chapterized
{"vmhd", {"minf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"smhd", {"minf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"hmhd", {"minf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"nmhd", {"minf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"gmhd", {"minf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM }, //present in chapterized
{"dinf", {"minf", "meta"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //required in minf
{"url ", {"dinf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"urn ", {"dinf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"dref", {"dinf"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"stbl", {"minf"}, PARENT_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"stts", {"stbl"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"ctts", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"cslg", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"stsd", {"stbl"}, DUAL_STATE_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"stsz", {"stbl"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"stz2", {"stbl"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"stsc", {"stbl"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"stco", {"stbl"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"co64", {"stbl"}, CHILD_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"stss", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"stsh", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"stdp", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"padb", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"sdtp", {"stbl", "traf"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"sbgp", {"stbl", "traf"}, CHILD_ATOM, OPTIONAL_MANY, VERSIONED_ATOM },
{"sbgp", {"stbl"}, CHILD_ATOM, OPTIONAL_MANY, VERSIONED_ATOM },
{"stps", {"stbl"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"edts", {"trak"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"elst", {"edts"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"udta", {"moov", "trak"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"meta", {"FILE_LEVEL", "moov", "trak", "udta"}, DUAL_STATE_ATOM, OPTIONAL_ONE, VERSIONED_ATOM }, //optionally contains info
{"mvex", {"moov"}, PARENT_ATOM, OPTIONAL_ONCE, SIMPLE_ATOM },
{"mehd", {"mvex"}, CHILD_ATOM, OPTIONAL_ONCE, VERSIONED_ATOM },
{"trex", {"mvex"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"subs", {"stbl", "traf"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"xml ", {"meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"bxml", {"meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"iloc", {"meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"pitm", {"meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"ipro", {"meta"}, PARENT_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"infe", {"meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"iinf", {"meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"sinf", {"ipro", "drms", "drmi"}, PARENT_ATOM, REQUIRED_ONE, SIMPLE_ATOM }, //parent atom is also "Protected Sample Entry"
{"frma", {"sinf"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"imif", {"sinf"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"schm", {"sinf", "srpp"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"schi", {"sinf", "srpp"}, DUAL_STATE_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"skcr", {"sinf"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"user", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"key ", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM }, //could be required in 'drms'/'drmi'
{"iviv", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"righ", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"name", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"priv", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"iKMS", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM }, // 'iAEC', '264b', 'iOMA', 'ICSD'
{"iSFM", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"iSLT", {"schi"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //boxes with 'k***' are also here; reserved
{"IKEY", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"hint", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"dpnd", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"ipir", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"mpod", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"sync", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"chap", {"tref"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //?possible versioned?
{"ipmc", {"moov", "meta"}, CHILD_ATOM, OPTIONAL_ONE, VERSIONED_ATOM },
{"tims", {"rtp "}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"tsro", {"rtp "}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"snro", {"rtp "}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"srpp", {"srtp"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"hnti", {"udta"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"rtp ", {"hnti"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //'rtp ' is defined twice in different containers
{"sdp ", {"hnti"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"hinf", {"udta"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"name", {"udta"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"trpy", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"nump", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"tpyl", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"totl", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"npck", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"maxr", {"hinf"}, CHILD_ATOM, OPTIONAL_MANY, SIMPLE_ATOM },
{"dmed", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"dimm", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"drep", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"tmin", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"tmax", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"pmax", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"dmax", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"payt", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"tpay", {"hinf"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"drms", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"drmi", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"alac", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"mp4a", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"mp4s", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"mp4v", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"avc1", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"avcp", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"text", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"jpeg", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"tx3g", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"rtp ", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM }, //"rtp " occurs twice; disparate meanings
{"srtp", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, SIMPLE_ATOM },
{"enca", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"encv", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"enct", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"encs", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"samr", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"sawb", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"sawp", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"s263", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"sevc", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"sqcp", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"ssmv", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"tmcd", {"stsd"}, DUAL_STATE_ATOM, REQ_FAMILIAL_ONE, VERSIONED_ATOM },
{"alac", {"alac"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"avcC", {"avc1", "drmi"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"damr", {"samr", "sawb"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"d263", {"s263"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"dawp", {"sawp"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"devc", {"sevc"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"dqcp", {"sqcp"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"dsmv", {"ssmv"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"bitr", {"d263"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM },
{"btrt", {"avc1"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //found in NeroAVC
{"m4ds", {"avc1"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //?possible versioned?
{"ftab", {"tx3g"}, CHILD_ATOM, OPTIONAL_ONE, SIMPLE_ATOM },
{"cprt", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM }, //the only ISO defined metadata tag; also a 3gp asset
{"titl", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM }, //3gp assets
{"auth", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"perf", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"gnre", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"dscp", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"albm", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"yrrc", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, VERSIONED_ATOM },
{"rtng", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"clsf", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"kywd", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"loci", {"udta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM },
{"ID32", {"meta"}, CHILD_ATOM, OPTIONAL_MANY, PACKED_LANG_ATOM }, //id3v2 tag
{"ilst", {"meta"}, PARENT_ATOM, OPTIONAL_ONCE, SIMPLE_ATOM }, //iTunes metadata container
{"----", {"ilst"}, PARENT_ATOM, OPTIONAL_MANY, SIMPLE_ATOM }, //reverse dns metadata
{"mean", {"----"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"name", {"----"}, CHILD_ATOM, REQUIRED_ONE, VERSIONED_ATOM },
{"esds", {"SAMPLE_DESC"}, CHILD_ATOM, REQUIRED_ONE, SIMPLE_ATOM }, //multiple parents; keep 3rd from end; manual return
{"(..)", {"ilst"}, PARENT_ATOM, OPTIONAL_ONE, SIMPLE_ATOM }, //multiple parents; keep 2nd from end; manual return
{"data", {"ITUNES_METADATA"}, CHILD_ATOM, PARENT_SPECIFIC, VERSIONED_ATOM } //multiple parents
};
#endif