// Parse the marker in from the JP2 file.
CNCSError CNCSJPCPPTMarker::Parse(CNCSJPC &JPC, CNCSJPCIOStream &Stream)
{
&JPC;//Keep compiler happy
CNCSError Error;
m_bHaveMarker = true;
NCSJP2_CHECKIO_BEGIN(Error, Stream);
NCSJP2_CHECKIO(ReadUINT16(m_nLength));
NCSJP2_CHECKIO(ReadUINT8(m_nZppt));
NCSJP2_CHECKIO(Seek(m_nLength - (sizeof(UINT16) + sizeof(UINT8))));
if(Error == NCS_SUCCESS) {
m_bValid = true;
}
NCSJP2_CHECKIO_END();
return(Error);
}
// UnParse the box to the stream
CNCSError CNCSJP2File::CNCSJP2SignatureBox::UnParse(class CNCSJP2File &JP2File, CNCSJPCIOStream &Stream)
{
CNCSError Error;
Error = CNCSJP2Box::UnParse(JP2File, Stream);
NCSJP2_CHECKIO_BEGIN(Error, Stream);
NCSJP2_CHECKIO(WriteUINT32(sm_JP2Signature));
NCSJP2_CHECKIO_END();
return(Error);
}
// UnParse the marker out to the stream.
CNCSError CNCSJPCRGNMarker::UnParse(CNCSJPC &JPC, CNCSJPCIOStream &Stream)
{
CNCSError Error;
Error = CNCSJPCMarker::UnParse(JPC, Stream);
NCSJP2_CHECKIO_BEGIN(Error, Stream);
NCSJP2_CHECKIO(WriteUINT16(m_nLength));
if(JPC.m_SIZ.m_nCsiz < 257) {
NCSJP2_CHECKIO(WriteUINT8((UINT8)m_nCrgn));
} else {
NCSJP2_CHECKIO(WriteUINT16(m_nCrgn));
}
NCSJP2_CHECKIO(WriteUINT8((UINT8)m_eSrgn));
NCSJP2_CHECKIO(WriteUINT8(m_nSPrgn));
NCSJP2_CHECKIO_END();
return(Error);
}
// Parse the marker in from the JP2 file.
CNCSError CNCSJPCCRGMarker::Parse(CNCSJPC &JPC, CNCSJPCIOStream &Stream)
{
CNCSError Error;
m_bHaveMarker = true;
NCSJP2_CHECKIO_BEGIN(Error, Stream);
NCSJP2_CHECKIO(ReadUINT16(m_nLength));
for(int i = 0; i < JPC.m_SIZ.m_nCsiz; i++) {
Registration reg;
NCSJP2_CHECKIO(ReadUINT16(reg.m_nXcrg));
NCSJP2_CHECKIO(ReadUINT16(reg.m_nYcrg));
m_Offsets.push_back(reg);
}
if(Error == NCS_SUCCESS) {
m_bValid = true;
}
NCSJP2_CHECKIO_END();
return(Error);
}
// Parse the marker in from the JP2 file.
CNCSError CNCSJPCComponentDepthType::Parse(CNCSJPC &JPC, CNCSJPCIOStream &Stream)
{
&JPC;//Keep compiler happy
CNCSError Error;
NCSJP2_CHECKIO_BEGIN(Error, Stream);
NCSJP2_CHECKIO(ReadUINT8(m_nBits));
if(m_nBits != 255) {
if(m_nBits & 0x80) {
m_bSigned = true;
} else {
m_bSigned = false;
}
m_nBits = (m_nBits & 0x7f) + 1;
}
NCSJP2_CHECKIO_END();
return(Error);
}
// Parse the box from the stream
CNCSError CNCSJP2File::CNCSJP2SignatureBox::Parse(class CNCSJP2File &JP2File, CNCSJPCIOStream &Stream)
{
CNCSError Error;
NCSJP2_CHECKIO_BEGIN(Error, Stream);
// UINT8 buf[4];
// Read in the signature
// NCSJP2_CHECKIO(Read(buf, 4));
UINT32 buf;
NCSJP2_CHECKIO(ReadUINT32(buf));
if(memcmp(&sm_JP2Signature, &buf, sizeof(buf)) == 0) {
// Signature is valid
m_bValid = true;
} else {
Error = NCS_FILE_INVALID;
}
NCSJP2_CHECKIO_END();
return(Error);
}
CNCSError JP2UUID3DNBox::Parse(class CNCSJP2File &JP2File, CNCSJPCIOStream &Stream)
{
CNCSError Error;
//See NCSJPCIOStream.h to get an understanding of these macros
NCSJP2_CHECKIO_BEGIN(Error, Stream);
NCSJP2_CHECKIO(Read(m_UUID.m_UUID, sizeof(m_UUID.m_UUID)));
if (m_UUID == sm_UUID)
{
Stream.ReadIEEE8(_OrigMaxVal);
Stream.ReadIEEE8(_OrigMinVal);
Stream.ReadUINT32(_NormalizedMaxVal);
Stream.ReadUINT32(_NormalizedMinVal);
} // if
NCSJP2_CHECKIO_END();
return(Error);
} // JP2UUID3DNBox::Parse
