def fetch_dataset (bq, uri, destdir):
""" Fetch the binaries associated with a bisque dataset
@param bq: A BQSession object
@param uri: a dataset uri
@param destdir: directory to put the binaries in
@return : A dict mapping a blob uri -> binary filename
"""
# Get the elements of the dataset as xml entries
dataset = bq.fetchxml("%s/value" %uri)
results = {}
# loop through each element i.e each image/video to fetch the binary
for fxml in dataset:
# get the unique uri of the blob
furi = fxml.get ('uri')
logging.debug( "FETCHING %s", furi)
# sanity check that we are fetching something that has a binary component
if fxml.tag == 'file' or fxml.tag == 'image':
x = fetch_blob(bq, furi, dest=destdir)
#elif fxml.tag == 'image':
# x = fetch_image_pixels(bq, furi, dest=destdir)
else:
logging.warn ('skipping %s', BQFactory.to_string(fxml))
continue
results.update (x)
return results
def main(self, image_url, mex_url = None, bisque_token=None, bq = None, args = None):
# Allow for testing by passing an alreay initialized session
if bq is None:
bq = BQSession().init_mex(mex_url, bisque_token)
# Fetch the blob links
if not os.path.exists ('videos'):
os.makedirs ('videos')
video = fetch_blob(bq, image_url, 'videos')
print "VIDEO file ", video
#pass arguments to MotionMeerkat scripts, located in MotionMeerkat/main.py
#Structure arguments
#Format call string
callargs = ["python MotionMeerkat/main.py",
"--i", video.values()[0],
"--threshT", args[0],
"--sub", args[1],
"--mogh", args[2],
"--mogv", args[3],
"--accA", args[4],
"--burn", args[5],
"--frameSET",
"--frame_rate", "1",
"--makeV", "none",
"--fileD", "Output"]
print "Calling ", " ".join(callargs)
#run MotionMeerkat
r = call(" ".join(callargs), shell=True)
if r != 0:
bq.fail_mex ("Meerkat returned non-zero")
#Post Results
#get filename to get the destination of the csv to be posted
fn=video.values()[0]
fbs= os.path.basename(fn)
head, tail = os.path.splitext(fbs)
#post file
frames_blob = bq.postblob(str("Output/" + head + "/Frames.csv"))
#get file location from regex
uri=re.search("uri=\"(.*?)\"", frames_blob).group(1)
tags = [{ 'name': 'outputs','tag' : [{'name': 'frames_csv', 'type':'file', 'value':uri}]}]
bq.finish_mex(tags = tags)
sys.exit(0)
