/*!
\warning Assume that the list has been sorted (Sort())
*/
const KaxCuePoint * KaxCues::GetTimecodePoint(uint64 aTimecode) const
{
uint64 TimecodeToLocate = aTimecode / GlobalTimecodeScale();
const KaxCuePoint * aPointPrev = NULL;
uint64 aPrevTime = 0;
uint64 aNextTime = EBML_PRETTYLONGINT(0xFFFFFFFFFFFF);
EBML_MASTER_CONST_ITERATOR Itr;
for (Itr = begin(); Itr != end(); ++Itr)
{
if (EbmlId(*(*Itr)) == EBML_ID(KaxCuePoint)) {
const KaxCuePoint *tmp = static_cast<const KaxCuePoint *>(*Itr);
// check the tile
const KaxCueTime *aTime = static_cast<const KaxCueTime *>(tmp->FindFirstElt(EBML_INFO(KaxCueTime)));
if (aTime != NULL)
{
uint64 _Time = uint64(*aTime);
if (_Time > aPrevTime && _Time < TimecodeToLocate) {
aPrevTime = _Time;
aPointPrev = tmp;
}
if (_Time < aNextTime && _Time > TimecodeToLocate) {
aNextTime= _Time;
}
}
}
}
return aPointPrev;
}
uint64 KaxCluster::GetBlockGlobalTimecode(int16 GlobalSavedTimecode)
{
if (!bFirstFrameInside) {
KaxClusterTimecode * Timecode = static_cast<KaxClusterTimecode *>(this->FindElt(EBML_INFO(KaxClusterTimecode)));
assert (bFirstFrameInside); // use the InitTimecode() hack for now
MinTimecode = MaxTimecode = PreviousTimecode = *static_cast<EbmlUInteger *>(Timecode);
bFirstFrameInside = true;
bPreviousTimecodeIsSet = true;
}
return int64(GlobalSavedTimecode * GlobalTimecodeScale()) + GlobalTimecode();
}
void KaxCues::PositionSet(const KaxBlockBlob & BlockReference)
{
// look for the element in the temporary references
std::vector<const KaxBlockBlob *>::iterator ListIdx;
for (ListIdx = myTempReferences.begin(); ListIdx != myTempReferences.end(); ListIdx++) {
if (*ListIdx == &BlockReference) {
// found, now add the element to the entry list
KaxCuePoint & NewPoint = AddNewChild<KaxCuePoint>(*this);
NewPoint.PositionSet(BlockReference, GlobalTimecodeScale());
myTempReferences.erase(ListIdx);
break;
}
}
}
void KaxCues::PositionSet(const KaxBlockGroup & BlockRef)
{
// look for the element in the temporary references
std::vector<const KaxBlockBlob *>::iterator ListIdx;
for (ListIdx = myTempReferences.begin(); ListIdx != myTempReferences.end(); ListIdx++) {
const KaxInternalBlock &refTmp = **ListIdx;
if (refTmp.GlobalTimecode() == BlockRef.GlobalTimecode() &&
refTmp.TrackNum() == BlockRef.TrackNumber()) {
// found, now add the element to the entry list
KaxCuePoint & NewPoint = AddNewChild<KaxCuePoint>(*this);
NewPoint.PositionSet(**ListIdx, GlobalTimecodeScale());
myTempReferences.erase(ListIdx);
break;
}
}
}
/*!
\brief retrieve the relative
\todo !!! We need a way to know the TimecodeScale
*/
int16 KaxCluster::GetBlockLocalTimecode(uint64 aGlobalTimecode) const
{
int64 TimecodeDelay = (int64(aGlobalTimecode) - int64(GlobalTimecode())) / int64(GlobalTimecodeScale());
assert(TimecodeDelay >= int16(0x8000) && TimecodeDelay <= int16(0x7FFF));
return int16(TimecodeDelay);
}
/*!
\todo only put the Blocks written in the cue entries
*/
filepos_t KaxCluster::Render(IOCallback & output, KaxCues & CueToUpdate, bool bSaveDefault)
{
filepos_t Result = 0;
size_t Index;
EBML_MASTER_ITERATOR TrkItr, Itr;
// update the Timecode of the Cluster before writing
KaxClusterTimecode * Timecode = static_cast<KaxClusterTimecode *>(this->FindElt(EBML_INFO(KaxClusterTimecode)));
*static_cast<EbmlUInteger *>(Timecode) = GlobalTimecode() / GlobalTimecodeScale();
if (Blobs.size() == 0) {
// old-school direct KaxBlockGroup
// SilentTracks handling
// check the parent cluster for existing tracks and see if they are contained in this cluster or not
if (bSilentTracksUsed) {
KaxTracks & MyTracks = *static_cast<KaxTracks *>(ParentSegment->FindElt(EBML_INFO(KaxTracks)));
for (TrkItr = MyTracks.begin(); TrkItr != MyTracks.end(); ++TrkItr) {
if (EbmlId(*(*TrkItr)) == EBML_ID(KaxTrackEntry)) {
KaxTrackEntry & entry = *static_cast<KaxTrackEntry *>(*TrkItr);
uint32 tracknum = entry.TrackNumber();
for (Itr = begin(); Itr != end(); ++Itr) {
if (EbmlId(*(*Itr)) == EBML_ID(KaxBlockGroup)) {
KaxBlockGroup & group = *static_cast<KaxBlockGroup *>(*Itr);
if (group.TrackNumber() == tracknum)
break; // this track is used
}
}
// the track wasn't found in this cluster
if (Itr == end()) {
KaxClusterSilentTracks * SilentTracks = static_cast<KaxClusterSilentTracks *>(this->FindFirstElt(EBML_INFO(KaxClusterSilentTracks)));
assert(SilentTracks != NULL); // the flag bSilentTracksUsed should be set when creating the Cluster
KaxClusterSilentTrackNumber * trackelt = static_cast<KaxClusterSilentTrackNumber *>(SilentTracks->AddNewElt(EBML_INFO(KaxClusterSilentTrackNumber)));
*static_cast<EbmlUInteger *>(trackelt) = tracknum;
}
}
}
}
Result = EbmlMaster::Render(output, bSaveDefault);
// For all Blocks add their position on the CueEntry
for (Itr = begin(); Itr != end(); ++Itr) {
if (EbmlId(*(*Itr)) == EBML_ID(KaxBlockGroup)) {
CueToUpdate.PositionSet(*static_cast<const KaxBlockGroup *>(*Itr));
}
}
} else {
// new school, using KaxBlockBlob
for (Index = 0; Index<Blobs.size(); Index++) {
#if MATROSKA_VERSION >= 2
if (Blobs[Index]->IsSimpleBlock())
PushElement( (KaxSimpleBlock&) *Blobs[Index] );
else
#endif
PushElement( (KaxBlockGroup&) *Blobs[Index] );
}
// SilentTracks handling
// check the parent cluster for existing tracks and see if they are contained in this cluster or not
if (bSilentTracksUsed) {
KaxTracks & MyTracks = *static_cast<KaxTracks *>(ParentSegment->FindElt(EBML_INFO(KaxTracks)));
for (TrkItr = MyTracks.begin(); TrkItr != MyTracks.end(); ++TrkItr) {
if (EbmlId(*(*TrkItr)) == EBML_ID(KaxTrackEntry)) {
KaxTrackEntry & entry = *static_cast<KaxTrackEntry *>(*TrkItr);
uint32 tracknum = entry.TrackNumber();
for (Index = 0; Index<Blobs.size(); Index++) {
if (((KaxInternalBlock&)*Blobs[Index]).TrackNum() == tracknum)
break; // this track is used
}
// the track wasn't found in this cluster
if (Index == ListSize()) {
KaxClusterSilentTracks * SilentTracks = static_cast<KaxClusterSilentTracks *>(this->FindFirstElt(EBML_INFO(KaxClusterSilentTracks)));
assert(SilentTracks != NULL); // the flag bSilentTracksUsed should be set when creating the Cluster
KaxClusterSilentTrackNumber * trackelt = static_cast<KaxClusterSilentTrackNumber *>(SilentTracks->AddNewElt(EBML_INFO(KaxClusterSilentTrackNumber)));
*static_cast<EbmlUInteger *>(trackelt) = tracknum;
}
}
}
}
Result = EbmlMaster::Render(output, bSaveDefault);
// For all Blocks add their position on the CueEntry
for (Index = 0; Index<Blobs.size(); Index++) {
CueToUpdate.PositionSet(*Blobs[Index]);
}
Blobs.clear();
}
return Result;
}
