void SegmentList::pruneByPlaybackTime(mtime_t time)
{
uint64_t num;
const Timescale timescale = inheritTimescale();
if(getSegmentNumberByScaledTime(timescale.ToScaled(time), &num))
pruneBySegmentNumber(num);
}
void SegmentInformation::SplitUsingIndex(std::vector<SplitPoint> &splitlist)
{
std::vector<ISegment *> seglist;
getSegments(INFOTYPE_MEDIA, seglist);
size_t prevstart = 0;
stime_t prevtime = 0;
const Timescale timescale = inheritTimescale();
SplitPoint split = {0,0,0};
std::vector<SplitPoint>::const_iterator splitIt;
for(splitIt = splitlist.begin(); splitIt < splitlist.end(); ++splitIt)
{
split = *splitIt;
if(splitIt != splitlist.begin())
{
/* do previous splitpoint */
const stime_t duration = timescale.ToScaled(split.duration);
insertIntoSegment(seglist, prevstart, split.offset - 1, prevtime, duration);
}
prevstart = split.offset;
prevtime = timescale.ToScaled(split.time);
}
if(splitlist.size() == 1)
{
const stime_t duration = timescale.ToScaled(split.duration);
insertIntoSegment(seglist, prevstart, 0, prevtime, duration);
}
else if(splitlist.size() > 1)
{
const stime_t duration = timescale.ToScaled(split.duration);
insertIntoSegment(seglist, prevstart, split.offset - 1, prevtime, duration);
}
}
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);
}
}
}
uint64_t MediaSegmentTemplate::getCurrentLiveTemplateNumber() const
{
uint64_t number = startNumber.Get();
/* live streams / templated */
const stime_t dur = duration.Get();
if(dur)
{
/* compute, based on current time */
const time_t playbacktime = time(NULL);
const Timescale timescale = inheritTimescale();
time_t streamstart = parentSegmentInformation->getPlaylist()->availabilityStartTime.Get();
streamstart += parentSegmentInformation->getPeriodStart();
stime_t elapsed = timescale.ToScaled(vlc_tick_from_sec(playbacktime - streamstart));
number += elapsed / dur;
}
return number;
}
bool SegmentList::getPlaybackTimeDurationBySegmentNumber(uint64_t number,
vlc_tick_t *time, vlc_tick_t *dur) const
{
*time = *dur = VLC_TICK_INVALID;
if(segments.empty())
return false;
const Timescale timescale = inheritTimescale();
const ISegment *first = segments.front();
if(first->getSequenceNumber() > number)
return false;
bool found = false;
stime_t seg_start = first->startTime.Get();
stime_t seg_dura = 0;
std::vector<ISegment *>::const_iterator it = segments.begin();
for(it = segments.begin(); it != segments.end(); ++it)
{
const ISegment *seg = *it;
if(seg->duration.Get())
seg_dura = seg->duration.Get();
else
seg_dura = duration.Get();
/* Assuming there won't be any discontinuity in sequence */
if(seg->getSequenceNumber() == number)
{
found = true;
break;
}
seg_start += seg_dura;
}
if(!found)
return false;
*time = VLC_TICK_0 + timescale.ToTime(seg_start);
*dur = VLC_TICK_0 + timescale.ToTime(seg_dura);
return true;
}
bool SegmentList::getPlaybackTimeDurationBySegmentNumber(uint64_t number,
mtime_t *time, mtime_t *dur) const
{
*time = *dur = VLC_TS_INVALID;
if(segments.empty())
return false;
const Timescale timescale = inheritTimescale();
const ISegment *first = segments.front();
if(first->getSequenceNumber() > number)
return false;
*time = first->startTime.Get();
std::vector<ISegment *>::const_iterator it = segments.begin();
for(it = segments.begin(); it != segments.end(); ++it)
{
const ISegment *seg = *it;
/* Assuming there won't be any discontinuity in sequence */
if(seg->getSequenceNumber() == number)
{
break;
}
else if(seg->duration.Get())
{
*time += seg->duration.Get();
*dur = seg->duration.Get();
}
else
{
*time += duration.Get();
*dur = duration.Get();
}
}
*time = VLC_TS_0 + timescale.ToTime( *time );
*dur = VLC_TS_0 + timescale.ToTime( *dur );
return true;
}
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;
}
bool SegmentInformation::getPlaybackTimeDurationBySegmentNumber(uint64_t number,
mtime_t *time, mtime_t *duration) const
{
SegmentList *segList;
MediaSegmentTemplate *mediaTemplate;
if( (mediaTemplate = inheritSegmentTemplate()) )
{
const Timescale timescale = mediaTemplate->inheritTimescale();
stime_t stime, sduration;
if(mediaTemplate->segmentTimeline.Get())
{
mediaTemplate->segmentTimeline.Get()->
getScaledPlaybackTimeDurationBySegmentNumber(number, &stime, &sduration);
}
else
{
stime = number * mediaTemplate->duration.Get();
sduration = mediaTemplate->duration.Get();
}
*time = timescale.ToTime(stime);
*duration = timescale.ToTime(sduration);
return true;
}
else if ( (segList = inheritSegmentList()) )
{
return segList->getPlaybackTimeDurationBySegmentNumber(number, time, duration);
}
else
{
const Timescale timescale = inheritTimescale();
const ISegment *segment = getSegment(SegmentInfoType::INFOTYPE_MEDIA, number);
if( segment )
{
*time = timescale.ToTime(segment->startTime.Get());
*duration = timescale.ToTime(segment->duration.Get());
return true;
}
}
return false;
}
SegmentChunk * SegmentTracker::getNextChunk(bool switch_allowed,
AbstractConnectionManager *connManager)
{
/* LVP added, TFE DEBUG */
//msg_Info(NULL, "TFE DEBUG SegmentTracker getNextChunk, %" PRId64, mdate());
//std::cerr << "TFE DEBUG SegmentTracker getNextChunk, " << mdate() << std::endl;
BaseRepresentation *rep = NULL, *prevRep = NULL;
ISegment *segment;
if(!adaptationSet) {
/* LVP added, TFE DEBUG */
//msg_Info(NULL, "TFE DEBUG SegmentTracker getNextChunk no adaptation set, %" PRId64, mdate());
//std::cerr << "TFE DEBUG SegmentTracker getNextChunk no adaptation set, " << mdate() << std::endl;
return NULL;
}
/* Ensure we don't keep chaining init/index without data */
if( initializing )
{
if( curRepresentation )
switch_allowed = false;
else
switch_allowed = true;
}
if( !switch_allowed ||
(curRepresentation && curRepresentation->getSwitchPolicy() == SegmentInformation::SWITCH_UNAVAILABLE) )
rep = curRepresentation;
else
rep = logic->getNextRepresentation(adaptationSet, curRepresentation);
if ( rep == NULL ) {
/* LVP added, TFE DEBUG */
//msg_Info(NULL, "TFE DEBUG SegmentTracker no rep 1, %" PRId64, mdate());
//std::cerr << "TFE DEBUG SegmentTracker no rep 1, " << mdate() << std::endl;
return NULL;
}
if(rep != curRepresentation)
{
notify(SegmentTrackerEvent(curRepresentation, rep));
prevRep = curRepresentation;
curRepresentation = rep;
init_sent = false;
index_sent = false;
initializing = true;
}
bool b_updated = false;
/* Ensure ephemere content is updated/loaded */
if(rep->needsUpdate())
b_updated = rep->runLocalUpdates(getPlaybackTime(), curNumber, false);
if(prevRep && !rep->consistentSegmentNumber())
{
/* Convert our segment number */
next = rep->translateSegmentNumber(next, prevRep);
}
else if(first && rep->getPlaylist()->isLive())
{
next = rep->getLiveStartSegmentNumber(next);
first = false;
}
if(b_updated)
{
if(!rep->consistentSegmentNumber())
curRepresentation->pruneBySegmentNumber(curNumber);
curRepresentation->scheduleNextUpdate(next);
}
if(rep->getStreamFormat() != format)
{
/* Initial format ? */
if(format == StreamFormat(StreamFormat::UNSUPPORTED))
{
format = rep->getStreamFormat();
}
else
{
format = rep->getStreamFormat();
notify(SegmentTrackerEvent(&format)); /* Notify new demux format */
return NULL; /* Force current demux to end */
}
}
if(format == StreamFormat(StreamFormat::UNSUPPORTED))
{
return NULL; /* Can't return chunk because no demux will be created */
}
if(!init_sent)
{
init_sent = true;
segment = rep->getSegment(BaseRepresentation::INFOTYPE_INIT);
if(segment) {
/* LVP added, TFE DEBUG */
std::cerr << "TFE DEBUG SegmentTracker getNextChunk no init sent but segment, " << mdate() << std::endl;
//msg_Info(NULL, "TFE DEBUG SegmentTracker getNextChunk no init sent but segment, %" PRId64, mdate());
//std::cerr << "TFE DEBUG SegmentTracker getNextChunk no init sent but segment, " << mdate() << std::endl;
return segment->toChunk(next, rep, connManager);
}
}
if(!index_sent)
{
index_sent = true;
segment = rep->getSegment(BaseRepresentation::INFOTYPE_INDEX);
if(segment) {
/* LVP added, TFE DEBUG */
// happens after no init sent
//msg_Info(NULL, "TFE DEBUG SegmentTracker getNextChunk no index sent but segment, %" PRId64, mdate());
//std::cerr << "TFE DEBUG SegmentTracker getNextChunk no index sent but segment, " << mdate() << std::endl;
return segment->toChunk(next, rep, connManager);
}
}
bool b_gap = false;
segment = rep->getNextSegment(BaseRepresentation::INFOTYPE_MEDIA, next, &next, &b_gap);
if(!segment)
{
reset();
/* LVP added, TFE DEBUG */
// once at the end
//msg_Info(NULL, "TFE DEBUG SegmentTracker getNextChunk no segment and reset, %" PRId64, mdate());
//std::cerr << "TFE DEBUG SegmentTracker getNextChunk no segment and reset, " << mdate() << std::endl;
return NULL;
}
if(initializing)
{
b_gap = false;
/* stop initializing after 1st chunk */
initializing = false;
}
SegmentChunk *chunk = segment->toChunk(next, rep, connManager);
/* Notify new segment length for stats / logic */
if(chunk)
{
const Timescale timescale = rep->inheritTimescale();
notify(SegmentTrackerEvent(rep->getAdaptationSet()->getID(),
timescale.ToTime(segment->duration.Get())));
}
/* We need to check segment/chunk format changes, as we can't rely on representation's (HLS)*/
if(chunk && format != chunk->getStreamFormat())
{
format = chunk->getStreamFormat();
notify(SegmentTrackerEvent(&format));
}
/* Handle both implicit and explicit discontinuities */
if( (b_gap && next) || (chunk && chunk->discontinuity) )
{
notify(SegmentTrackerEvent(chunk));
}
if(chunk)
{
curNumber = next;
next++;
}
/* LVP added, TFE */
//msg_Info(NULL, "TFE SegmentTracker getNextChunk done, %" PRId64 ", %" PRId64, mdate(), rep->getBandwidth());
//std::cerr << "TFE SegmentTracker getNextChunk done, " << mdate() << ", " << rep->getBandwidth() << std::endl;
return chunk;
}
