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Consolidate timewarp computation and add tests.

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robin@ynput.io 2025-01-15 18:43:02 +01:00
parent 704ef232b6
commit 8351395a82
6 changed files with 1015 additions and 13 deletions
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48
client/ayon_core/pipeline/editorial.py
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@ -375,10 +375,6 @@ def get_media_range_with_retimes(otio_clip, handle_start, handle_end):
tw_node.update(metadata)
tw_node["lookup"] = list(lookup)
# get first and last frame offsets
offset_in += lookup[0]
offset_out += lookup[-1]
# add to timewarp nodes
time_warp_nodes.append(tw_node)
@ -403,19 +399,14 @@ def get_media_range_with_retimes(otio_clip, handle_start, handle_end):
src_in = conformed_source_range.start_time
src_duration = conformed_source_range.duration
offset_in = otio.opentime.RationalTime(offset_in, rate=src_in.rate)
offset_duration = otio.opentime.RationalTime(
offset_out,
rate=src_duration.rate
)
retimed_duration = otio.opentime.RationalTime(
src_duration.value * abs(time_scalar),
src_duration.rate
)
trim_range = otio.opentime.TimeRange(
start_time=src_in + offset_in,
duration=retimed_duration + offset_duration
start_time=src_in,
duration=retimed_duration,
)
# preserve discrete frame numbers
@ -431,7 +422,6 @@ def get_media_range_with_retimes(otio_clip, handle_start, handle_end):
media_in_trimmed = conformed_source_range.start_time.value + offset_in
offset_duration = conformed_source_range.duration.value * abs(time_scalar)
offset_duration += offset_out
offset_duration -= 1 # duration 1 frame -> freeze frame -> end = start + 0
offset_duration = max(0, offset_duration) # negative duration = frozen frame
media_out_trimmed = media_in_trimmed + offset_duration
@ -439,6 +429,38 @@ def get_media_range_with_retimes(otio_clip, handle_start, handle_end):
media_in = available_range.start_time.value
media_out = available_range.end_time_inclusive().value
if time_warp_nodes:
# Naive approach: Resolve consecutive timewarp(s) on range,
# then check if plate range has to be extended beyond source range.
frame_range = [media_in_trimmed]
in_frame = media_in_trimmed + time_scalar
while in_frame <= media_out_trimmed:
frame_range.append(in_frame)
in_frame += time_scalar
for tw_idx, tw in enumerate(time_warp_nodes):
for idx, frame_number in enumerate(frame_range):
# First timewarp, apply on media range
if tw_idx == 0:
frame_range[idx] = round(frame_number + tw["lookup"][idx] * time_scalar)
# Consecutive timewarp, apply on the previous result
else:
new_idx = round(idx + tw["lookup"][idx])
if not 0 <= new_idx < len(frame_range):
# TODO: implementing this would need to actually have
# retiming engine resolve process within AYON, resolving wraps
# as curves, then projecting those into the previous media_range.
raise NotImplementedError(
"Unsupported consecutive timewarps (out of computed range)"
)
frame_range[idx] = frame_range[new_idx]
# adjust range if needed
media_in_trimmed = min(media_in_trimmed, min(frame_range))
media_out_trimmed = max(media_out_trimmed, max(frame_range))
# adjust available handles if needed
if (media_in_trimmed - media_in) < handle_start:
handle_start = max(0, media_in_trimmed - media_in)