// UnParse the tree to the JPC codestream.
bool CNCSJPCTagTree::UnParse(CNCSJPCIOStream &Stream, INT32 nX, INT32 nY, INT32 nThreshold)
{
INT32 nLeaf = nY * m_nWidth + nX;
Node *stk[31];
Node **stkptr;
Node *node;
int low;
bool bRet = true;
stkptr = stk;
node = &m_Nodes[nLeaf];
while(node->m_pParent) {
*stkptr++ = node;
node = node->m_pParent;
}
low=0;
for (;;) {
if (low > node->m_nState) {
node->m_nState = (UINT16)low;
} else {
low = node->m_nState;
}
while (low < nThreshold) {
if (low >= node->m_nValue) {
if (!node->m_bKnown) {
bRet &= Stream.Stuff(true);
node->m_bKnown = true;
}
break;
}
bRet &= Stream.Stuff(false);
++low;
}
node->m_nState = (UINT16)low;
if (stkptr == stk) break;
node = *--stkptr;
}
return(bRet);
}
