virtual ReadResult readNode(const std::string& uri, const Options* options) const
{
std::string ext = osgDB::getFileExtension(uri);
if ( acceptsExtension(ext) )
{
// See if the filename starts with server: and strip it off. This will trick OSG
// into passing in the filename to our plugin instead of using the CURL plugin if
// the filename contains a URL. So, if you want to read a URL, you can use the
// following format: osgDB::readNodeFile("server:http://myserver/myearth.earth").
// This should only be necessary for the first level as the other files will have
// a tilekey prepended to them.
if ((uri.length() > 7) && (uri.substr(0, 7) == "server:"))
return readNode(uri.substr(7), options);
// parse the tile key and engine ID:
std::string tileDef = osgDB::getNameLessExtension(uri);
unsigned int lod, x, y, engineID;
sscanf(tileDef.c_str(), "%d/%d/%d.%d", &lod, &x, &y, &engineID);
// find the appropriate engine:
osg::ref_ptr<MPTerrainEngineNode> engineNode;
MPTerrainEngineNode::getEngineByUID( (UID)engineID, engineNode );
if ( engineNode.valid() )
{
OE_START_TIMER(tileLoadTime);
// see if we have a progress tracker
ProgressCallback* progress =
options ? const_cast<ProgressCallback*>(
dynamic_cast<const ProgressCallback*>(options->getUserData())) : 0L;
// must have a ProgressCallback if we're profiling.
bool ownProgress = (progress == 0L);
if ( !progress && _profiling )
progress = new ProgressCallback();
// assemble the key and create the node:
const Profile* profile = engineNode->getMap()->getProfile();
TileKey key( lod, x, y, profile );
osg::ref_ptr<osg::Node> node;
if ( "osgearth_engine_mp_tile" == ext )
{
node = engineNode->createNode(key, progress);
}
else if ( "osgearth_engine_mp_standalone_tile" == ext )
{
node = engineNode->createStandaloneNode(key, progress);
}
double tileLoadTime = OE_STOP_TIMER(tileLoadTime);
if ( progress )
progress->stats()["tile_load_time"] = tileLoadTime;
if ( _profiling )
{
OE_NOTICE << "tile: " << tileDef << std::endl;
for(std::map<std::string,double>::iterator i = progress->stats().begin();
i != progress->stats().end();
++i)
{
OE_NOTICE << " " << i->first << " = " << std::setprecision(4)
<< i->second << " ("
<< (int)((i->second/tileLoadTime)*100)
<< "%)"
<< std::endl;
}
if ( ownProgress )
{
delete progress;
progress = 0L;
}
}
// Deal with failed loads.
if ( !node.valid() )
{
if ( key.getLOD() == 0 || (progress && progress->isCanceled()) )
{
// the tile will ask again next time.
return ReadResult::FILE_NOT_FOUND;
}
else
{
// the parent tile will never ask again as long as it remains in memory.
node = new InvalidTileNode( key );
}
}
else
{
// notify the Terrain interface of a new tile
osg::Timer_t start = osg::Timer::instance()->tick();
engineNode->getTerrain()->notifyTileAdded(key, node.get());
osg::Timer_t end = osg::Timer::instance()->tick();
}
return ReadResult( node.get(), ReadResult::FILE_LOADED );
}
else
{
return ReadResult::FILE_NOT_FOUND;
}
}
else
{
return ReadResult::FILE_NOT_HANDLED;
}
}
virtual ReadResult readNode(const std::string& uri, const Options* options) const
{
std::string ext = osgDB::getFileExtension(uri);
if ( acceptsExtension(ext) )
{
// See if the filename starts with server: and strip it off. This will trick OSG
// into passing in the filename to our plugin instead of using the CURL plugin if
// the filename contains a URL. So, if you want to read a URL, you can use the
// following format: osgDB::readNodeFile("server:http://myserver/myearth.earth").
// This should only be necessary for the first level as the other files will have
// a tilekey prepended to them.
if ((uri.length() > 7) && (uri.substr(0, 7) == "server:"))
return readNode(uri.substr(7), options);
// parse the tile key and engine ID:
std::string tileDef = osgDB::getNameLessExtension(uri);
unsigned int lod, x, y, engineID;
sscanf(tileDef.c_str(), "%d/%d/%d.%d", &lod, &x, &y, &engineID);
// find the appropriate engine:
osg::ref_ptr<MPTerrainEngineNode> engineNode;
MPTerrainEngineNode::getEngineByUID( (UID)engineID, engineNode );
if ( engineNode.valid() )
{
Registry::instance()->startActivity(uri);
OE_START_TIMER(tileLoadTime);
// see if we have a progress tracker
ProgressCallback* progress =
options ? const_cast<ProgressCallback*>(
dynamic_cast<const ProgressCallback*>(options->getUserData())) : 0L;
// must have a ProgressCallback if we're profiling.
bool ownProgress = (progress == 0L);
if ( !progress && _profiling )
progress = new ProgressCallback();
// assemble the key and create the node:
const Profile* profile = engineNode->getMap()->getProfile();
TileKey key( lod, x, y, profile );
osg::ref_ptr<osg::Node> node;
if ( "osgearth_engine_mp_tile" == ext )
{
node = engineNode->createNode(key, progress);
}
else if ( "osgearth_engine_mp_standalone_tile" == ext )
{
node = engineNode->createStandaloneNode(key, progress);
}
double tileLoadTime = OE_STOP_TIMER(tileLoadTime);
if ( progress )
progress->stats()["tile_load_time"] = tileLoadTime;
// profiling level 1 = detailed stats about individual loads.
if ( _profiling == 1 )
{
progress->stats()["http_get_time_avg"] =
progress->stats()["http_get_time"] / progress->stats()["http_get_count"];
OE_NOTICE << "tile: " << tileDef << std::endl;
for(ProgressCallback::Stats::iterator i = progress->stats().begin();
i != progress->stats().end();
++i)
{
std::stringstream buf;
if ( osgEarth::endsWith(i->first, "_time") )
{
buf
<< i->first << " = " << std::setprecision(4) << (i->second*1000.0) << "ms ("
<< (int)((i->second/tileLoadTime)*100) << "%)";
}
else
{
buf << i->first << " = " << std::setprecision(4) << i->second;
}
OE_NOTICE << " " << buf.str() << std::endl;
}
if ( ownProgress )
{
delete progress;
progress = 0L;
}
}
// profiling level 2 = running 60-sample averages
else if ( _profiling == 2 )
{
static std::deque<double> tileLoadTimes[3];
static int samples[3] = { 64, 256, 1024 };
static double runningTotals[3] = { 0.0, 0.0, 0.0 };
static Threading::Mutex averageMutex;
averageMutex.lock();
for(int i=0; i<3; ++i)
{
runningTotals[i] += tileLoadTime;
tileLoadTimes[i].push_back( tileLoadTime );
if ( tileLoadTimes[i].size() > samples[i] )
{
runningTotals[i] -= tileLoadTimes[i].front();
tileLoadTimes[i].pop_front();
}
}
OE_NOTICE << "(samples)time : "
<< "(" << samples[0] << "): " << (tileLoadTimes[0].size() == samples[0] ? (runningTotals[0]/(double)samples[0])*1000.0 : -1.0) << "ms; "
<< "(" << samples[1] << "): " << (tileLoadTimes[1].size() == samples[1] ? (runningTotals[1]/(double)samples[1])*1000.0 : -1.0) << "ms; "
<< "(" << samples[2] << "): " << (tileLoadTimes[2].size() == samples[2] ? (runningTotals[2]/(double)samples[2])*1000.0 : -1.0) << "ms; "
<< std::endl;
averageMutex.unlock();
}
Registry::instance()->endActivity(uri);
// Deal with failed loads.
if ( !node.valid() )
{
if ( key.getLOD() == 0 )
{
// the tile will ask again next time.
return ReadResult::FILE_NOT_FOUND;
}
else if (progress && progress->isCanceled())
{
if ( _profiling )
{
OE_NOTICE << LC << "Tile " << key.str() << " -- canceled!" << std::endl;
}
return ReadResult::FILE_NOT_FOUND;
}
else
{
// the parent tile will never ask again as long as it remains in memory.
node = new InvalidTileNode( key );
}
}
else
{
// notify the Terrain interface of a new tile
// moved this to TileNodeRegistry::add
//osg::Timer_t start = osg::Timer::instance()->tick();
//engineNode->getTerrain()->notifyTileAdded(key, node.get());
//osg::Timer_t end = osg::Timer::instance()->tick();
}
return ReadResult( node.get(), ReadResult::FILE_LOADED );
}
else
{
return ReadResult::FILE_NOT_FOUND;
}
}
else
{
return ReadResult::FILE_NOT_HANDLED;
}
}
