def test_layout_helpers():
layout = ov.Layout("NCHWD")
assert (layout_helpers.has_batch(layout))
assert (layout_helpers.has_channels(layout))
assert (layout_helpers.has_depth(layout))
assert (layout_helpers.has_height(layout))
assert (layout_helpers.has_width(layout))
assert layout_helpers.batch_idx(layout) == 0
assert layout_helpers.channels_idx(layout) == 1
assert layout_helpers.height_idx(layout) == 2
assert layout_helpers.width_idx(layout) == 3
assert layout_helpers.depth_idx(layout) == 4
layout = ov.Layout("N...C")
assert (layout_helpers.has_batch(layout))
assert (layout_helpers.has_channels(layout))
assert not (layout_helpers.has_depth(layout))
assert not (layout_helpers.has_height(layout))
assert not (layout_helpers.has_width(layout))
assert layout_helpers.batch_idx(layout) == 0
assert layout_helpers.channels_idx(layout) == -1
with pytest.raises(RuntimeError):
layout_helpers.height_idx(layout)
with pytest.raises(RuntimeError):
layout_helpers.width_idx(layout)
with pytest.raises(RuntimeError):
layout_helpers.depth_idx(layout)
layout = ov.Layout("NC?")
assert (layout_helpers.has_batch(layout))
assert (layout_helpers.has_channels(layout))
assert not (layout_helpers.has_depth(layout))
assert not (layout_helpers.has_height(layout))
assert not (layout_helpers.has_width(layout))
assert layout_helpers.batch_idx(layout) == 0
assert layout_helpers.channels_idx(layout) == 1
with pytest.raises(RuntimeError):
layout_helpers.height_idx(layout)
with pytest.raises(RuntimeError):
layout_helpers.width_idx(layout)
with pytest.raises(RuntimeError):
layout_helpers.depth_idx(layout)
def check_suitable_for_reverse(layout: Layout, ov_input):
"""
Internal function. Checks if input with layout is suitable for reversing channels
:param: layout Existing source/target layout items specified by user
:param: ov_input Model's input
:return: True if reverse channels can be applied to input
"""
if not layout_helpers.has_channels(layout):
return False
if ov_input.get_partial_shape().rank.is_dynamic:
return False
c_idx = layout_helpers.channels_idx(layout)
rank = ov_input.get_partial_shape().rank.get_length()
if c_idx < 0:
c_idx += rank
if c_idx >= rank:
raise Error('Layout {} for input {} is inconsistent with shape {}'.format(
layout, ov_input.get_tensor().get_any_name(), ov_input.get_partial_shape()))
c_num = ov_input.get_partial_shape()[c_idx]
return c_num.is_dynamic or c_num.get_length() == 3
layout = Layout('N...')
# Second dimension is 'channels' others are whatever
layout = Layout('?C...')
# Last dimension is 'channels' others are whatever
layout = Layout('...C')
# ! [ov:layout:dynamic]
# ! [ov:layout:predefined]
from openvino.runtime import layout_helpers
# returns 0 for batch
layout_helpers.batch_idx(Layout('NCDHW'))
# returns 1 for channels
layout_helpers.channels_idx(Layout('NCDHW'))
# returns 2 for depth
layout_helpers.depth_idx(Layout('NCDHW'))
# returns -2 for height
layout_helpers.height_idx(Layout('...HW'))
# returns -1 for width
layout_helpers.width_idx(Layout('...HW'))
# ! [ov:layout:predefined]
# ! [ov:layout:dump]
layout = Layout('NCHW')
print(layout) # prints [N,C,H,W]
# ! [ov:layout:dump]