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atom_standard.cpp
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/*
* 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 (from others work).
*/
#include "src/impl.h"
namespace mp4v2 { namespace impl {
///////////////////////////////////////////////////////////////////////////////
MP4StandardAtom::MP4StandardAtom (MP4File &file, const char *type) : MP4Atom(file, type)
{
/*
* This is a big if else loop. Make sure that you don't break it
* when adding new atoms, or you will set the unknown type flag
*
* Try to keep it in alphabetical order - it should only be called
* 1 time per atom, so it's not that urgent.
*/
if (ATOMID(type) == ATOMID("bitr")) {
AddProperty( /* 0 */
new MP4Integer32Property(*this, "avgBitrate"));
AddProperty( /* 1 */
new MP4Integer32Property(*this, "maxBitrate"));
} else if (ATOMID(type) == ATOMID("btrt")) {
AddProperty( new MP4Integer32Property(*this, "bufferSizeDB")); /* 0 */
AddProperty( new MP4Integer32Property(*this, "avgBitrate")); /* 1 */
AddProperty( new MP4Integer32Property(*this, "maxBitrate")); /* 2 */
} else if (ATOMID(type) == ATOMID("burl")) {
AddProperty( new MP4StringProperty(*this, "base_url"));
/*
* c???
*/
} else if (ATOMID(type) == ATOMID("co64")) {
AddVersionAndFlags();
MP4Integer32Property* pCount =
new MP4Integer32Property(*this, "entryCount");
AddProperty(pCount);
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable);
pTable->AddProperty(
new MP4Integer64Property(*this, "chunkOffset"));
} else if (ATOMID(type) == ATOMID("ctts")) {
AddVersionAndFlags();
MP4Integer32Property* pCount =
new MP4Integer32Property(*this, "entryCount");
AddProperty(pCount);
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable);
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "sampleCount"));
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "sampleOffset"));
/*
* d???
*/
} else if (ATOMID(type) == ATOMID("dinf")) {
ExpectChildAtom("dref", Required, OnlyOne);
} else if (ATOMID(type) == ATOMID("dimm")) {
AddProperty( // bytes of immediate data
new MP4Integer64Property(*this, "bytes"));
} else if (ATOMID(type) == ATOMID("dmax")) {
AddProperty( // max packet duration
new MP4Integer32Property(*this, "milliSecs"));
} else if (ATOMID(type) == ATOMID("dmed")) {
AddProperty( // bytes sent from media data
new MP4Integer64Property(*this, "bytes"));
} else if (ATOMID(type) == ATOMID("drep")) {
AddProperty( // bytes of repeated data
new MP4Integer64Property(*this, "bytes"));
/*
* e???
*/
} else if (ATOMID(type) == ATOMID("edts")) {
ExpectChildAtom("elst", Required, OnlyOne);
} else if (ATOMID(type) == ATOMID("esds")) {
AddVersionAndFlags();
AddProperty(
new MP4DescriptorProperty(*this, NULL, MP4ESDescrTag, 0,
Required, OnlyOne));
/*
* f???
*/
} else if (ATOMID(type) == ATOMID("frma")) {
AddProperty( /* 0 */
new MP4Integer32Property(*this, "data-format"));
/*
* g???
*/
} else if (ATOMID(type) == ATOMID("gmhd")) {
ExpectChildAtom("gmin", Required, OnlyOne);
ExpectChildAtom("tmcd", Optional, OnlyOne);
ExpectChildAtom("text", Optional, OnlyOne);
} else if (ATOMID(type) == ATOMID("hmhd")) {
AddVersionAndFlags();
AddProperty(new MP4Integer16Property(*this, "maxPduSize"));
AddProperty(new MP4Integer16Property(*this, "avgPduSize"));
AddProperty(new MP4Integer32Property(*this, "maxBitRate"));
AddProperty(new MP4Integer32Property(*this, "avgBitRate"));
AddProperty(new MP4Integer32Property(*this, "slidingAvgBitRate"));
/*
* i???
*/
} else if (ATOMID(type) == ATOMID("iKMS")) {
AddVersionAndFlags(); /* 0, 1 */
MP4StringProperty* pProp = new MP4StringProperty(*this, "kms_URI");
AddProperty(pProp); /* 2 */
} else if (ATOMID(type) == ATOMID("iSFM")) {
AddVersionAndFlags(); /* 0, 1 */
AddProperty( /* 2 */
new MP4BitfieldProperty(*this, "selective-encryption", 1));
AddProperty( /* 3 */
new MP4BitfieldProperty(*this, "reserved", 7));
AddProperty( /* 4 */
new MP4Integer8Property(*this, "key-indicator-length"));
AddProperty( /* 5 */
new MP4Integer8Property(*this, "IV-length"));
} else if (ATOMID(type) == ATOMID("ilst")) {
ExpectChildAtom("\251nam", Optional, OnlyOne); /* name */
ExpectChildAtom("\251ART", Optional, OnlyOne); /* artist */
ExpectChildAtom("\251wrt", Optional, OnlyOne); /* writer */
ExpectChildAtom("\251alb", Optional, OnlyOne); /* album */
ExpectChildAtom("\251day", Optional, OnlyOne); /* date */
ExpectChildAtom("\251too", Optional, OnlyOne); /* tool */
ExpectChildAtom("\251cmt", Optional, OnlyOne); /* comment */
ExpectChildAtom("\251gen", Optional, OnlyOne); /* custom genre */
ExpectChildAtom("trkn", Optional, OnlyOne); /* tracknumber */
ExpectChildAtom("disk", Optional, OnlyOne); /* disknumber */
ExpectChildAtom("gnre", Optional, OnlyOne); /* genre (ID3v1 index + 1) */
ExpectChildAtom("cpil", Optional, OnlyOne); /* compilation */
ExpectChildAtom("tmpo", Optional, OnlyOne); /* BPM */
ExpectChildAtom("covr", Optional, OnlyOne); /* cover art */
ExpectChildAtom("aART", Optional, OnlyOne); /* album artist */
ExpectChildAtom("----", Optional, Many); /* ---- free form */
ExpectChildAtom("pgap", Optional, OnlyOne); /* part of gapless album */
ExpectChildAtom("tvsh", Optional, OnlyOne); /* TV show */
ExpectChildAtom("tvsn", Optional, OnlyOne); /* TV season */
ExpectChildAtom("tven", Optional, OnlyOne); /* TV episode number */
ExpectChildAtom("tvnn", Optional, OnlyOne); /* TV network name */
ExpectChildAtom("tves", Optional, OnlyOne); /* TV epsidoe */
ExpectChildAtom("desc", Optional, OnlyOne); /* description */
ExpectChildAtom("ldes", Optional, OnlyOne); /* long description */
ExpectChildAtom("soal", Optional, OnlyOne); /* sort album */
ExpectChildAtom("soar", Optional, OnlyOne); /* sort artist */
ExpectChildAtom("soaa", Optional, OnlyOne); /* sort album artist */
ExpectChildAtom("sonm", Optional, OnlyOne); /* sort name */
ExpectChildAtom("soco", Optional, OnlyOne); /* sort composer */
ExpectChildAtom("sosn", Optional, OnlyOne); /* sort show */
ExpectChildAtom("hdvd", Optional, OnlyOne); /* HD video */
ExpectChildAtom("©enc", Optional, OnlyOne); /* Encoded by */
ExpectChildAtom("pcst", Optional, OnlyOne); /* Podcast flag */
ExpectChildAtom("keyw", Optional, OnlyOne); /* Keywords (for podcasts?) */
ExpectChildAtom("catg", Optional, OnlyOne); /* Category (for podcasts?) */
ExpectChildAtom("purl", Optional, OnlyOne); /* Podcast URL */
ExpectChildAtom("egid", Optional, OnlyOne); /* Podcast episode global unique ID */
ExpectChildAtom("rtng", Optional, OnlyOne); /* Content Rating */
ExpectChildAtom("stik", Optional, OnlyOne); /* MediaType */
ExpectChildAtom("\251grp", Optional, OnlyOne); /* Grouping */
ExpectChildAtom("\251lyr", Optional, OnlyOne); /* Lyrics */
ExpectChildAtom("cprt", Optional, OnlyOne); /* Copyright */
ExpectChildAtom("apID", Optional, OnlyOne); /* iTunes Account */
ExpectChildAtom("akID", Optional, OnlyOne); /* iTunes Account Type */
ExpectChildAtom("sfID", Optional, OnlyOne); /* iTunes Country */
ExpectChildAtom("cnID", Optional, OnlyOne); /* Content ID */
ExpectChildAtom("atID", Optional, OnlyOne); /* Artist ID */
ExpectChildAtom("plID", Optional, OnlyOne); /* Playlist ID */
ExpectChildAtom("geID", Optional, OnlyOne); /* Genre ID */
ExpectChildAtom("cmID", Optional, OnlyOne); /* Composer ID */
ExpectChildAtom("xid ", Optional, OnlyOne); /* XID */
} else if (ATOMID(type) == ATOMID("imif")) {
AddVersionAndFlags();
AddProperty(new MP4DescriptorProperty(*this, "ipmp_desc", MP4IPMPDescrTag,
MP4IPMPDescrTag, Required, Many));
} else if (ATOMID(type) == ATOMID("iods")) {
AddVersionAndFlags();
AddProperty(
new MP4DescriptorProperty(*this, NULL, MP4FileIODescrTag,
MP4FileODescrTag,
Required, OnlyOne));
/*
* m???
*/
} else if (ATOMID(type) == ATOMID("maxr")) {
AddProperty(new MP4Integer32Property(*this, "granularity"));
AddProperty(new MP4Integer32Property(*this, "bytes"));
} else if (ATOMID(type) == ATOMID("mdia")) {
ExpectChildAtom("mdhd", Required, OnlyOne);
ExpectChildAtom("hdlr", Required, OnlyOne);
ExpectChildAtom("minf", Required, OnlyOne);
} else if (ATOMID(type) == ATOMID("meta")) { // iTunes
AddVersionAndFlags(); /* 0, 1 */
ExpectChildAtom("hdlr", Required, OnlyOne);
ExpectChildAtom("ilst", Required, OnlyOne);
} else if (ATOMID(type) == ATOMID("mfhd")) {
AddVersionAndFlags(); /* 0, 1 */
AddProperty( /* 2 */
new MP4Integer32Property(*this, "sequenceNumber"));
} else if (ATOMID(type) == ATOMID("minf")) {
ExpectChildAtom("vmhd", Optional, OnlyOne);
ExpectChildAtom("smhd", Optional, OnlyOne);
ExpectChildAtom("hmhd", Optional, OnlyOne);
ExpectChildAtom("nmhd", Optional, OnlyOne);
ExpectChildAtom("gmhd", Optional, OnlyOne);
ExpectChildAtom("dinf", Required, OnlyOne);
ExpectChildAtom("stbl", Required, OnlyOne);
} else if (ATOMID(type) == ATOMID("moof")) {
ExpectChildAtom("mfhd", Required, OnlyOne);
ExpectChildAtom("traf", Optional, Many);
} else if (ATOMID(type) == ATOMID("moov")) {
ExpectChildAtom("mvhd", Required, OnlyOne);
ExpectChildAtom("iods", Optional, OnlyOne);
ExpectChildAtom("trak", Required, Many);
ExpectChildAtom("udta", Optional, Many);
ExpectChildAtom("mvex", Optional, OnlyOne);
} else if (ATOMID(type) == ATOMID("mvex")) {
ExpectChildAtom("trex", Required, Many);
/*
* n???
*/
} else if (ATOMID(type) == ATOMID("nmhd")) {
AddVersionAndFlags();
} else if (ATOMID(type) == ATOMID("nump")) {
AddProperty( // packets sent
new MP4Integer64Property(*this, "packets"));
/*
* o???
*/
} else if (ATOMID(type) == ATOMID("odkm")) {
AddVersionAndFlags();
ExpectChildAtom("ohdr", Required, OnlyOne);
/*
* p???
*/
} else if (ATOMID(type) == ATOMID("payt")) {
AddProperty(new MP4Integer32Property(*this, "payloadNumber"));
AddProperty(new MP4StringProperty(*this, "rtpMap", Counted));
} else if (ATOMID(type) == ATOMID("pinf")) {
ExpectChildAtom("frma", Required, OnlyOne);
} else if (ATOMID(type) == ATOMID("pmax")) {
AddProperty( // max packet size
new MP4Integer32Property(*this, "bytes"));
} else if (ATOMID(type) == ATOMID("schi")) {
// not sure if this is child atoms or table of boxes
// get clarification on spec 9.1.2.5
ExpectChildAtom("odkm", Optional, OnlyOne);
ExpectChildAtom("iKMS", Optional, OnlyOne);
ExpectChildAtom("iSFM", Optional, OnlyOne);
} else if (ATOMID(type) == ATOMID("schm")) {
AddVersionAndFlags(); /* 0, 1 */
AddProperty( /* 2 */
new MP4Integer32Property(*this, "scheme_type"));
AddProperty( /* 3 */
new MP4Integer32Property(*this, "scheme_version"));
// browser URI if flags set, TODO
} else if (ATOMID(type) == ATOMID("sinf")) {
ExpectChildAtom("frma", Required, OnlyOne);
ExpectChildAtom("imif", Optional, OnlyOne);
ExpectChildAtom("schm", Optional, OnlyOne);
ExpectChildAtom("schi", Optional, OnlyOne);
} else if (ATOMID(type) == ATOMID("smhd")) {
AddVersionAndFlags();
AddReserved(*this, "reserved", 4);
} else if (ATOMID(type) == ATOMID("snro")) {
AddProperty(new MP4Integer32Property(*this, "offset"));
} else if (ATOMID(type) == ATOMID("stco")) {
AddVersionAndFlags();
MP4Integer32Property* pCount = new MP4Integer32Property(*this, "entryCount");
AddProperty(pCount);
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable);
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "chunkOffset"));
} else if (ATOMID(type) == ATOMID("stsh")) {
AddVersionAndFlags();
MP4Integer32Property* pCount = new MP4Integer32Property(*this, "entryCount");
AddProperty(pCount);
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable);
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "shadowedSampleNumber"));
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "syncSampleNumber"));
} else if (ATOMID(type) == ATOMID("stss")) {
AddVersionAndFlags();
MP4Integer32Property* pCount = new MP4Integer32Property(*this, "entryCount");
AddProperty(pCount);
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable);
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "sampleNumber"));
} else if (ATOMID(type) == ATOMID("stts")) {
AddVersionAndFlags();
MP4Integer32Property* pCount = new MP4Integer32Property(*this, "entryCount");
AddProperty(pCount);
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable);
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "sampleCount"));
pTable->AddProperty(new MP4Integer32Property(pTable->GetParentAtom(), "sampleDelta"));
} else if (ATOMID(type) == ATOMID("tims")) {
AddProperty(
new MP4Integer32Property(*this, "timeScale"));
} else if (ATOMID(type) == ATOMID("tmin")) {
AddProperty( // min relative xmit time
new MP4Integer32Property(*this, "milliSecs"));
} else if (ATOMID(type) == ATOMID("tmax")) {
AddProperty( // max relative xmit time
new MP4Integer32Property(*this, "milliSecs"));
} else if (ATOMID(type) == ATOMID("traf")) {
ExpectChildAtom("tfhd", Required, OnlyOne);
ExpectChildAtom("trun", Optional, Many);
} else if (ATOMID(type) == ATOMID("trak")) {
ExpectChildAtom("tkhd", Required, OnlyOne);
ExpectChildAtom("tref", Optional, OnlyOne);
ExpectChildAtom("edts", Optional, OnlyOne);
ExpectChildAtom("mdia", Required, OnlyOne);
ExpectChildAtom("udta", Optional, Many);
} else if (ATOMID(type) == ATOMID("tref")) {
ExpectChildAtom("chap", Optional, OnlyOne);
ExpectChildAtom("dpnd", Optional, OnlyOne);
ExpectChildAtom("hint", Optional, OnlyOne);
ExpectChildAtom("ipir", Optional, OnlyOne);
ExpectChildAtom("mpod", Optional, OnlyOne);
ExpectChildAtom("sync", Optional, OnlyOne);
} else if (ATOMID(type) == ATOMID("trex")) {
AddVersionAndFlags(); /* 0, 1 */
AddProperty( /* 2 */
new MP4Integer32Property(*this, "trackId"));
AddProperty( /* 3 */
new MP4Integer32Property(*this, "defaultSampleDesriptionIndex"));
AddProperty( /* 4 */
new MP4Integer32Property(*this, "defaultSampleDuration"));
AddProperty( /* 5 */
new MP4Integer32Property(*this, "defaultSampleSize"));
AddProperty( /* 6 */
new MP4Integer32Property(*this, "defaultSampleFlags"));
} else if (ATOMID(type) == ATOMID("trpy") ||
ATOMID(type) == ATOMID("tpyl")) {
AddProperty( // bytes sent including RTP headers
new MP4Integer64Property(*this, "bytes"));
} else if (ATOMID(type) == ATOMID("tsro")) {
AddProperty(
new MP4Integer32Property(*this, "offset"));
} else if (ATOMID(type) == ATOMID("wave")) {
ExpectChildAtom("esds", Required, OnlyOne);
} else {
/*
* default - unknown type
*/
SetUnknownType(true);
}
}
///////////////////////////////////////////////////////////////////////////////
}} // namespace mp4v2::impl