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clip: Don't split clips at illegal position

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Make sure that when we split a clip, the resulting timeline would
not be in an illegal state.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-editing-services/issues/94
This commit is contained in:
Thibault Saunier 2020-03-04 17:16:18 -03:00
parent 1cc5221d49
commit f8091262b5
2 changed files with 50 additions and 2 deletions
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26
ges/ges-clip.c
View file

@ -1428,6 +1428,30 @@ ges_clip_split (GESClip * clip, guint64 position)
return NULL;
}
old_duration = position - start;
if (!timeline_tree_can_move_element (timeline_get_tree
(GES_TIMELINE_ELEMENT_TIMELINE (clip)), GES_TIMELINE_ELEMENT (clip),
GES_TIMELINE_ELEMENT_LAYER_PRIORITY (clip),
start, old_duration, NULL)) {
GST_WARNING_OBJECT (clip,
"Can not split %" GES_FORMAT " at %" GST_TIME_FORMAT
" as timeline would be in an illegal" " state.", GES_ARGS (clip),
GST_TIME_ARGS (position));
return NULL;
}
new_duration = duration + start - position;
if (!timeline_tree_can_move_element (timeline_get_tree
(GES_TIMELINE_ELEMENT_TIMELINE (clip)), GES_TIMELINE_ELEMENT (clip),
GES_TIMELINE_ELEMENT_LAYER_PRIORITY (clip), position, new_duration,
NULL)) {
GST_WARNING_OBJECT (clip,
"Can not split %" GES_FORMAT " at %" GST_TIME_FORMAT
" as timeline would end up in an illegal" " state.", GES_ARGS (clip),
GST_TIME_ARGS (position));
return NULL;
}
GST_DEBUG_OBJECT (clip, "Spliting at %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
@ -1440,8 +1464,6 @@ ges_clip_split (GESClip * clip, guint64 position)
media_duration_factor =
ges_timeline_element_get_media_duration_factor (GES_TIMELINE_ELEMENT
(clip));
new_duration = duration + start - position;
old_duration = position - start;
_set_start0 (GES_TIMELINE_ELEMENT (new_object), position);
_set_inpoint0 (GES_TIMELINE_ELEMENT (new_object),
inpoint + old_duration * media_duration_factor);

26
tests/check/python/test_timeline.py
View file

@ -561,6 +561,32 @@ class TestInvalidOverlaps(common.GESSimpleTimelineTest):
self.assertIsNone(clip3.split(12))
self.assertIsNone(clip3.split(15))
def test_split_with_transition(self):
self.track_types = [GES.TrackType.AUDIO]
super().setUp()
self.timeline.set_auto_transition(True)
clip0 = self.add_clip(start=0, in_point=0, duration=50)
clip1 = self.add_clip(start=20, in_point=0, duration=50)
self.assertTimelineTopology([
[
(GES.TestClip, 0, 50),
(GES.TransitionClip, 20, 30),
(GES.TestClip, 20, 50)
]
])
# Split should file as the first part of the split
# would be fully overlapping clip0
self.assertIsNone(clip1.split(40))
self.assertTimelineTopology([
[
(GES.TestClip, 0, 50),
(GES.TransitionClip, 20, 30),
(GES.TestClip, 20, 50)
]
])
def test_changing_duration(self):
clip1 = self.add_clip(start=9, in_point=0, duration=2)
clip2 = self.add_clip(start=10, in_point=0, duration=2)