void Parser::parseAtom (QString s)
{
initAtom();
atom=s;
QRegExp re;
int pos;
// Strip WS at beginning
re.setPattern ("\\w");
re.setMinimal (true);
pos=re.indexIn (atom);
if (pos>=0)
s=s.right(s.length()-pos);
// Get command
re.setPattern ("\\b(.*)(\\s|\\()");
pos=re.indexIn (s);
if (pos>=0)
com=re.cap(1);
// Get parameters
paramList.clear();
QString t;
int leftParenthesis;
int rightParenthesis;
if (!nextParenthesisContents(s, leftParenthesis, rightParenthesis, t)) return;
paramList=findParameters(t);
}
AtomParser(const nsACString& aType, const MediaLargeByteBuffer* aData)
{
const nsCString mType(aType); // for logging macro.
mp4_demuxer::ByteReader reader(aData);
mp4_demuxer::AtomType initAtom("ftyp");
mp4_demuxer::AtomType mediaAtom("moof");
while (reader.Remaining() >= 8) {
uint64_t size = reader.ReadU32();
const uint8_t* typec = reader.Peek(4);
uint32_t type = reader.ReadU32();
MSE_DEBUGV(AtomParser ,"Checking atom:'%c%c%c%c'",
typec[0], typec[1], typec[2], typec[3]);
if (mInitOffset.isNothing() &&
mp4_demuxer::AtomType(type) == initAtom) {
mInitOffset = Some(reader.Offset());
}
if (mMediaOffset.isNothing() &&
mp4_demuxer::AtomType(type) == mediaAtom) {
mMediaOffset = Some(reader.Offset());
}
if (mInitOffset.isSome() && mMediaOffset.isSome()) {
// We have everything we need.
break;
}
if (size == 1) {
// 64 bits size.
if (!reader.CanReadType<uint64_t>()) {
break;
}
size = reader.ReadU64();
} else if (size == 0) {
// Atom extends to the end of the buffer, it can't have what we're
// looking for.
break;
}
if (reader.Remaining() < size - 8) {
// Incomplete atom.
break;
}
reader.Read(size - 8);
}
reader.DiscardRemaining();
}
Atom::Atom(std::string what) {
d_atomicNum = PeriodicTable::getTable()->getAtomicNumber(what);
initAtom();
};
void Parser::initParser()
{
initAtom();
current=-1;
}
