void IsoffMainParser::parseTimeline(Node *node, MediaSegmentTemplate *templ)
{
if(!node)
return;
SegmentTimeline *timeline = new (std::nothrow) SegmentTimeline(templ);
if(timeline)
{
std::vector<Node *> elements = DOMHelper::getElementByTagName(node, "S", false);
std::vector<Node *>::const_iterator it;
for(it = elements.begin(); it != elements.end(); ++it)
{
const Node *s = *it;
if(!s->hasAttribute("d")) /* Mandatory */
continue;
mtime_t d = Integer<mtime_t>(s->getAttributeValue("d"));
mtime_t r = 0; // never repeats by default
if(s->hasAttribute("r"))
r = Integer<uint64_t>(s->getAttributeValue("r"));
if(s->hasAttribute("t"))
{
mtime_t t = Integer<mtime_t>(s->getAttributeValue("t"));
timeline->addElement(d, r, t);
}
else timeline->addElement(d, r);
templ->segmentTimeline.Set(timeline);
}
}
}
void SegmentInformation::mergeWithTimeline(SegmentTimeline *updated)
{
MediaSegmentTemplate *templ = inheritSegmentTemplate();
if(templ)
{
SegmentTimeline *timeline = templ->segmentTimeline.Get();
if(timeline)
timeline->mergeWith(*updated);
}
}
void MediaSegmentTemplate::mergeWith(MediaSegmentTemplate *updated, vlc_tick_t prunebarrier)
{
SegmentTimeline *timeline = segmentTimeline.Get();
if(timeline && updated->segmentTimeline.Get())
{
timeline->mergeWith(*updated->segmentTimeline.Get());
if(prunebarrier)
{
const Timescale timescale = timeline->inheritTimescale();
const uint64_t number =
timeline->getElementNumberByScaledPlaybackTime(timescale.ToScaled(prunebarrier));
timeline->pruneBySequenceNumber(number);
}
}
}
/* Returns wanted segment, or next in sequence if not found */
ISegment * SegmentInformation::getNextSegment(SegmentInfoType type, uint64_t i_pos,
uint64_t *pi_newpos, bool *pb_gap) const
{
*pb_gap = false;
*pi_newpos = i_pos;
if( type != INFOTYPE_MEDIA )
return NULL;
std::vector<ISegment *> retSegments;
const size_t size = getSegments( type, retSegments );
if( size )
{
std::vector<ISegment *>::const_iterator it;
for(it = retSegments.begin(); it != retSegments.end(); ++it)
{
ISegment *seg = *it;
if(seg->isTemplate()) /* we don't care about seq number */
{
/* Check if we don't exceed timeline */
MediaSegmentTemplate *templ = dynamic_cast<MediaSegmentTemplate*>(retSegments[0]);
SegmentTimeline *timeline = (templ) ? templ->segmentTimeline.Get() : NULL;
if(timeline)
{
*pi_newpos = std::max(timeline->minElementNumber(), i_pos);
if(timeline->maxElementNumber() < i_pos)
return NULL;
}
else
{
*pi_newpos = i_pos;
/* start number */
*pi_newpos = std::max((uint64_t)templ->startNumber.Get(), i_pos);
}
return seg;
}
else if(seg->getSequenceNumber() >= i_pos)
{
*pi_newpos = seg->getSequenceNumber();
*pb_gap = (*pi_newpos != i_pos);
return seg;
}
}
}
return NULL;
}
bool SegmentInformation::getSegmentNumberByTime(mtime_t time, uint64_t *ret) const
{
if( mediaSegmentTemplate )
{
const Timescale timescale = mediaSegmentTemplate->inheritTimescale();
SegmentTimeline *timeline = mediaSegmentTemplate->segmentTimeline.Get();
if(timeline)
{
time = timescale.ToScaled(time);
*ret = timeline->getElementNumberByScaledPlaybackTime(time);
return true;
}
const stime_t duration = mediaSegmentTemplate->duration.Get();
*ret = mediaSegmentTemplate->startNumber.Get();
if(duration)
{
*ret += timescale.ToScaled(time) / duration;
return true;
}
}
else if ( segmentList && !segmentList->getSegments().empty() )
{
const Timescale timescale = segmentList->inheritTimescale();
time = timescale.ToScaled(time);
return segmentList->getSegmentNumberByScaledTime(time, ret);
}
else if( segmentBase )
{
const Timescale timescale = inheritTimescale();
time = timescale.ToScaled(time);
*ret = 0;
const std::vector<ISegment *> list = segmentBase->subSegments();
return SegmentInfoCommon::getSegmentNumberByScaledTime(list, time, ret);
}
if(parent)
return parent->getSegmentNumberByTime(time, ret);
else
return false;
}
uint64_t SegmentInformation::getLiveStartSegmentNumber(uint64_t def) const
{
if( mediaSegmentTemplate )
{
SegmentTimeline *timeline = mediaSegmentTemplate->segmentTimeline.Get();
if(timeline)
{
const uint64_t start = timeline->minElementNumber();
const uint64_t end = timeline->maxElementNumber();
if(end > 2 && (end - start >= 2))
return end - 2;
else
return start;
}
return mediaSegmentTemplate->startNumber.Get();
}
else if ( segmentList && !segmentList->getSegments().empty() )
{
const std::vector<ISegment *> list = segmentList->getSegments();
if(list.size() > 3)
return list.at(list.size() - 3)->getSequenceNumber();
else if(!list.empty())
return list.front()->getSequenceNumber();
else
return segmentList->getStartIndex();
}
else if( segmentBase )
{
const std::vector<ISegment *> list = segmentBase->subSegments();
if(list.size() > 3)
return list.at(list.size() - 3)->getSequenceNumber();
else if(!list.empty())
return list.front()->getSequenceNumber();
else
return segmentBase->getSequenceNumber();
}
if(parent)
return parent->getLiveStartSegmentNumber(def);
else
return def;
}
