def test_bbb_iter_small_frame_window(tmpdir):
"""Tests that iter_frame returns frames if time window is small."""
repo = Repository(str(tmpdir.join('frames_from_to_small_window')))
repo_start = 0
nFC = 10
span = 1000
nFrames = nFC * span
repo_end = repo_start + nFrames
begin_end_cam_id = [(ts, ts + span, 0)
for ts in range(repo_start, repo_end, span)]
for begin, end, cam_id in begin_end_cam_id:
fc = build_frame_container(begin, end, cam_id)
fc.init('frames', span)
for i, tstamp in enumerate(range(begin, end)):
frame = fc.frames[i]
frame.id = tstamp
frame.timestamp = tstamp
repo.add(fc)
begin = 1
end = 10
fnames = list(repo.iter_frames(begin, end))
assert (len(fnames) > 0)
begin = 1001
end = 1011
fnames = list(repo.iter_fnames(begin, end))
assert (len(fnames) > 0)
def test_bbb_repo_iter_frames_filtered(tmpdir):
repo = Repository(str(tmpdir.join('frames_from_to_filtered')))
repo_start = 0
nFC = 10
span = 1000
nFrames = nFC * span
repo_end = repo_start + nFrames
begin_end_cam_id = [(ts, ts + span, 0)
for ts in range(repo_start, repo_end, span)]
for begin, end, cam_id in begin_end_cam_id:
fc = build_frame_container(begin, end, cam_id)
fc.init('frames', span)
for i, tstamp in enumerate(range(begin, end)):
frame = fc.frames[i]
frame.id = tstamp
frame.timestamp = tstamp
repo.add(fc)
timestamps = [f[0].timestamp for f in repo.iter_frames(begin, end)]
selected_timestamps = set(np.random.choice(timestamps, size=5, replace=False))
class TimestepFilter():
def __init__(self, timesteps):
self.timesteps = timesteps
def __call__(self, frame):
return frame.timestamp in self.timesteps
filtered_frames = list(repo.iter_frames(begin, end,
frame_filter=TimestepFilter(selected_timestamps)))
filtered_timestamps = set([f[0].timestamp for f in filtered_frames])
assert(filtered_timestamps == selected_timestamps)
def test_bbb_iter_small_frame_window(tmpdir):
"""Tests that iter_frame returns frames if time window is small."""
repo = Repository(str(tmpdir.join('frames_from_to_small_window')))
repo_start = 0
nFC = 10
span = 1000
nFrames = nFC * span
repo_end = repo_start + nFrames
begin_end_cam_id = [(ts, ts + span, 0)
for ts in range(repo_start, repo_end, span)]
for begin, end, cam_id in begin_end_cam_id:
fc = build_frame_container(begin, end, cam_id)
fc.init('frames', span)
for i, tstamp in enumerate(range(begin, end)):
frame = fc.frames[i]
frame.id = tstamp
frame.timestamp = tstamp
repo.add(fc)
begin = 1
end = 10
fnames = list(repo.iter_frames(begin, end))
assert(len(fnames) > 0)
begin = 1001
end = 1011
fnames = list(repo.iter_fnames(begin, end))
assert(len(fnames) > 0)
def test_bbb_repo_open_frame_container(tmpdir):
repo = Repository(str(tmpdir))
cam_id = 1
fc = build_frame_container(1000, 5000, cam_id)
repo.add(fc)
open_fc = repo.open(2000, 1)
assert fc.fromTimestamp == open_fc.fromTimestamp
assert fc.toTimestamp == open_fc.toTimestamp
def test_bbb_repo_open_frame_container(tmpdir):
repo = Repository(str(tmpdir))
cam_id = 1
fc = build_frame_container(1000, 5000, cam_id)
repo.add(fc)
open_fc = repo.open(2000, 1)
assert fc.fromTimestamp == open_fc.fromTimestamp
assert fc.toTimestamp == open_fc.toTimestamp
def test_bbb_iter_frames_from_to(tmpdir):
"""Tests that only frames in given range are iterated."""
repo = Repository(str(tmpdir.join('frames_from_to')))
repo_start = 0
nFC = 10
span = 1000
nFrames = nFC * span
repo_end = repo_start + nFrames
begin_end_cam_id = [(ts, ts + span, 0)
for ts in range(repo_start, repo_end, span)]
for begin, end, cam_id in begin_end_cam_id:
fc = build_frame_container(begin, end, cam_id)
fc.init('frames', span)
for i, tstamp in enumerate(range(begin, end)):
frame = fc.frames[i]
frame.id = tstamp
frame.timestamp = tstamp
repo.add(fc)
def check_tstamp_invariant(begin, end):
"""Helper to check if begin <= tstamp < end is true for all frames."""
for frame, fc in repo.iter_frames(begin, end):
# frame container invariant
assert begin < fc.toTimestamp
assert fc.fromTimestamp < end
# frame invariant
assert begin <= frame.timestamp < end
# repo_start < start < end < repo_end
check_tstamp_invariant(repo_start + 10, repo_end - 10)
# start < repo_start < end < repo_end
check_tstamp_invariant(repo_start - 10, repo_end - 10)
# start < end < repo_start < repo_end
check_tstamp_invariant(repo_start - 20, repo_start - 10)
# repo_start < start < repo_end < end
check_tstamp_invariant(repo_start + 10, repo_end + 10)
# repo_start < repo_end < start < end
check_tstamp_invariant(repo_end + 10, repo_end + 20)
# check whole length
all_frames = [f for f, _ in repo.iter_frames()]
assert len(all_frames) == nFrames
# check with begin = None
skip_end = [f for f, _ in repo.iter_frames(end=repo_end - span)]
assert len(skip_end) == nFrames - span
# check with end = None
skip_start = [f for f, _ in repo.iter_frames(begin=span)]
assert len(skip_start) == nFrames - span
def test_bbb_iter_frames_from_to(tmpdir):
"""Tests that only frames in given range are iterated."""
repo = Repository(str(tmpdir.join('frames_from_to')))
repo_start = 0
nFC = 10
span = 1000
nFrames = nFC * span
repo_end = repo_start + nFrames
begin_end_cam_id = [(ts, ts + span, 0)
for ts in range(repo_start, repo_end, span)]
for begin, end, cam_id in begin_end_cam_id:
fc = build_frame_container(begin, end, cam_id)
fc.init('frames', span)
for i, tstamp in enumerate(range(begin, end)):
frame = fc.frames[i]
frame.id = tstamp
frame.timestamp = tstamp
repo.add(fc)
def check_tstamp_invariant(begin, end):
"""Helper to check if begin <= tstamp < end is true for all frames."""
for frame, fc in repo.iter_frames(begin, end):
# frame container invariant
assert begin < fc.toTimestamp
assert fc.fromTimestamp < end
# frame invariant
assert begin <= frame.timestamp < end
# repo_start < start < end < repo_end
check_tstamp_invariant(repo_start + 10, repo_end - 10)
# start < repo_start < end < repo_end
check_tstamp_invariant(repo_start - 10, repo_end - 10)
# start < end < repo_start < repo_end
check_tstamp_invariant(repo_start - 20, repo_start - 10)
# repo_start < start < repo_end < end
check_tstamp_invariant(repo_start + 10, repo_end + 10)
# repo_start < repo_end < start < end
check_tstamp_invariant(repo_end + 10, repo_end + 20)
# check whole length
all_frames = [f for f, _ in repo.iter_frames()]
assert len(all_frames) == nFrames
# check with begin = None
skip_end = [f for f, _ in repo.iter_frames(end=repo_end - span)]
assert len(skip_end) == nFrames - span
# check with end = None
skip_start = [f for f, _ in repo.iter_frames(begin=span)]
assert len(skip_start) == nFrames - span
def test_bbb_repo_add_frame_container(tmpdir):
repo = Repository(str(tmpdir))
cam_id = 1
fc = build_frame_container(1000, 5000, 1)
repo.add(fc)
fnames = repo.find(1000)
expected_fname = repo._get_filename(fc.fromTimestamp, fc.toTimestamp,
cam_id, 'bbb')
expected_fname = os.path.basename(expected_fname)
assert os.path.basename(fnames[0]) == expected_fname
fnames = repo.find(1500)
assert os.path.basename(fnames[0]) == expected_fname
fnames = repo.find(2500)
assert os.path.basename(fnames[0]) == expected_fname
def test_bbb_repo_add_frame_container(tmpdir):
repo = Repository(str(tmpdir))
cam_id = 1
fc = build_frame_container(1000, 5000, 1)
repo.add(fc)
fnames = repo.find(1000)
expected_fname = repo._get_filename(fc.fromTimestamp,
fc.toTimestamp, cam_id, 'bbb')
expected_fname = os.path.basename(expected_fname)
assert os.path.basename(fnames[0]) == expected_fname
fnames = repo.find(1500)
assert os.path.basename(fnames[0]) == expected_fname
fnames = repo.find(2500)
assert os.path.basename(fnames[0]) == expected_fname
def test_bbb_repo_iter_frames_filtered(tmpdir):
repo = Repository(str(tmpdir.join('frames_from_to_filtered')))
repo_start = 0
nFC = 10
span = 1000
nFrames = nFC * span
repo_end = repo_start + nFrames
begin_end_cam_id = [(ts, ts + span, 0)
for ts in range(repo_start, repo_end, span)]
for begin, end, cam_id in begin_end_cam_id:
fc = build_frame_container(begin, end, cam_id)
fc.init('frames', span)
for i, tstamp in enumerate(range(begin, end)):
frame = fc.frames[i]
frame.id = tstamp
frame.timestamp = tstamp
repo.add(fc)
timestamps = [f[0].timestamp for f in repo.iter_frames(begin, end)]
selected_timestamps = set(
np.random.choice(timestamps, size=5, replace=False))
class TimestepFilter():
def __init__(self, timesteps):
self.timesteps = timesteps
def __call__(self, frame):
return frame.timestamp in self.timesteps
filtered_frames = list(
repo.iter_frames(begin,
end,
frame_filter=TimestepFilter(selected_timestamps)))
filtered_timestamps = set([f[0].timestamp for f in filtered_frames])
assert (filtered_timestamps == selected_timestamps)
