# extract the ring around the needle from each image 
# to create a spectrogram

from java.lang.System import currentTimeMillis
import java.lang.Exception
from java.io import File

tr= getParam( 'timerange', '2016-10-01T00:00/01:00', 'timerange to load' )
drtr= DatumRangeUtil.parseTimeRange(tr)

xx= 241 + linspace( 0, 257-241, 21 )
yy= 55 + zeros( 21 )

dsb= DataSetBuilder(2,1000,yy.length())
xdsb= DataSetBuilder(1,1000)

root='/home/jbf/public_html/camE/'
tp= TimeParser.create('$Y$m$dT$H$M$S.jpg')
dirs= generateTimeRanges('$Y/$m/$d/',tr)
monitor.started()
for d in dirs:
    print root+d+'*.jpg'
    if ( not File(root+d).exists() ):
        continue
    ff= listDirectory(root+d+'*.jpg')
    print 'found files: ',len(ff)
    monitor.setTaskSize(len(ff))
    t0= currentTimeMillis()
    for f in ff:
        if ( monitor.isCancelled() ): break
        monitor.setTaskProgress( monitor.getTaskProgress()+1 )
        try:
             t= tp.parse(f).getTimeDatum()
             print t, drtr, drtr.contains(t)
             if ( drtr.contains(t) ):
                 print root + d + f 
                 im= getDataSet( root + d + f + '?channel=greyscale' )
                 print im
                 zz= interpolate( im, xx, yy )
                 dsb.nextRecord( zz )
                 xdsb.nextRecord( t )
                 print dsb
        except java.lang.Exception, e:
             print e
             continue   
print xdsb          
dsb.putProperty( QDataSet.DEPEND_0, xdsb.getDataSet() )
dsb.putProperty( QDataSet.DEPEND_1, putProperty( xx, QDataSet.LABEL, 'x location' ) )
dsb.putProperty( QDataSet.VALID_MAX, 256 )
dsb.putProperty( QDataSet.VALID_MIN, 0 )
dsb.putProperty( QDataSet.LABEL, 'grayscale' )
result= dsb.getDataSet()
print result