void
Rat_to_extended(ASDCP::Rational rate, byte_t* buf)
{
memset(buf, 0, 10);
ui32_t value = (ui32_t)ceil(rate.Quotient());
ui32_t exp = value;
exp >>= 1;
ui8_t i = 0;
for ( ; i < 32; i++ )
{
exp >>= 1;
if ( ! exp )
break;
}
*(buf+1) = i;
for ( i = 32; i != 0 ; i-- )
{
if ( value & 0x80000000 )
break;
value <<= 1;
}
*(ui32_t*)(buf+2) = KM_i32_BE(value);
}
// all the above for a single source clip
Result_t
AS_02::PHDR::MXFWriter::h__Writer::WritePHDRHeader(const std::string& PackageLabel, const ASDCP::UL& WrappingUL,
const std::string& TrackName, const ASDCP::UL& EssenceUL,
const ASDCP::UL& DataDefinition, const ASDCP::Rational& EditRate,
const ui32_t& TCFrameRate)
{
if ( EditRate.Numerator == 0 || EditRate.Denominator == 0 )
{
DefaultLogSink().Error("Non-zero edit-rate reqired.\n");
return RESULT_PARAM;
}
InitHeader();
AddSourceClip(EditRate, EditRate/*TODO: for a moment*/, TCFrameRate, TrackName, EssenceUL, DataDefinition, PackageLabel);
// add metadata track
TrackSet<SourceClip> metdata_track =
CreateTrackAndSequence<SourcePackage, SourceClip>(m_HeaderPart, *m_FilePackage,
MD_DEF_LABEL, EditRate,
UL(m_Dict->ul(MDD_PHDRImageMetadataItem)),
3 /* track id */, m_Dict);
metdata_track.Sequence->Duration.set_has_value();
m_DurationUpdateList.push_back(&(metdata_track.Sequence->Duration.get()));
// Consult ST 379:2004 Sec. 6.3, "Element to track relationship" to see where "12" comes from.
metdata_track.Track->TrackNumber = KM_i32_BE(Kumu::cp2i<ui32_t>((UL(m_MetadataUL).Value() + 12)));
metdata_track.Clip = new SourceClip(m_Dict);
m_HeaderPart.AddChildObject(metdata_track.Clip);
metdata_track.Sequence->StructuralComponents.push_back(metdata_track.Clip->InstanceUID);
metdata_track.Clip->DataDefinition = UL(m_Dict->ul(MDD_PHDRImageMetadataWrappingFrame));
// for now we do not allow setting this value, so all files will be 'original'
metdata_track.Clip->SourceTrackID = 0;
metdata_track.Clip->SourcePackageID = NilUMID;
metdata_track.Clip->Duration.set_has_value();
m_DurationUpdateList.push_back(&(metdata_track.Clip->Duration.get()));
// add PHDR subdescriptor
m_MetadataTrackSubDescriptor = new PHDRMetadataTrackSubDescriptor(m_Dict);
m_EssenceSubDescriptorList.push_back(m_MetadataTrackSubDescriptor);
GenRandomValue(m_MetadataTrackSubDescriptor->InstanceUID);
m_EssenceDescriptor->SubDescriptors.push_back(m_MetadataTrackSubDescriptor->InstanceUID);
m_MetadataTrackSubDescriptor->DataDefinition = UL(m_Dict->ul(MDD_PHDRImageMetadataWrappingFrame));
m_MetadataTrackSubDescriptor->SourceTrackID = 3;
m_MetadataTrackSubDescriptor->SimplePayloadSID = 0;
AddEssenceDescriptor(WrappingUL);
m_IndexWriter.SetPrimerLookup(&m_HeaderPart.m_Primer);
m_RIP.PairArray.push_back(RIP::Pair(0, 0)); // Header partition RIP entry
m_IndexWriter.OperationalPattern = m_HeaderPart.OperationalPattern;
m_IndexWriter.EssenceContainers = m_HeaderPart.EssenceContainers;
Result_t result = m_HeaderPart.WriteToFile(m_File, m_HeaderSize);
if ( KM_SUCCESS(result) )
{
m_PartitionSpace *= floor( EditRate.Quotient() + 0.5 ); // convert seconds to edit units
m_ECStart = m_File.Tell();
m_IndexWriter.IndexSID = 129;
UL body_ul(m_Dict->ul(MDD_ClosedCompleteBodyPartition));
Partition body_part(m_Dict);
body_part.BodySID = 1;
body_part.OperationalPattern = m_HeaderPart.OperationalPattern;
body_part.EssenceContainers = m_HeaderPart.EssenceContainers;
body_part.ThisPartition = m_ECStart;
result = body_part.WriteToFile(m_File, body_ul);
m_RIP.PairArray.push_back(RIP::Pair(1, body_part.ThisPartition)); // Second RIP Entry
}
return result;
}