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layer: Add ability to get clips in a given interval

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Reviewed-by: Alex Băluț <<alexandru.balut@gmail.com>>
Reviewed-by: Thibault Saunier <thibault.saunier@collabora.com>
Differential Revision: https://phabricator.freedesktop.org/D1689
This commit is contained in:
suhas2go 2017-03-17 19:02:56 +00:00 committed by Thibault Saunier
parent dd8dacdfde
commit 6dc0cd0dec
3 changed files with 147 additions and 0 deletions
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37
ges/ges-layer.c
View file

@ -734,3 +734,40 @@ ges_layer_set_timeline (GESLayer * layer, GESTimeline * timeline)
layer->timeline = timeline;
}
/**
* ges_layer_get_clips_in_interval:
* @layer: a #GESLayer
* @start: start of the interval
* @end: end of the interval
*
* Gets the clips which appear between @start and @end on @layer.
*
* Returns: (transfer full) (element-type GESClip): a #GList of clips intersecting [@start, @end) interval on @layer.
*/
GList *
ges_layer_get_clips_in_interval (GESLayer * layer, GstClockTime start,
GstClockTime end)
{
GList *tmp;
GList *intersecting_clips = NULL;
GstClockTime clip_start, clip_end;
gboolean clip_intersects;
for (tmp = layer->priv->clips_start; tmp; tmp = tmp->next) {
clip_intersects = FALSE;
clip_start = ges_timeline_element_get_start (tmp->data);
clip_end = clip_start + ges_timeline_element_get_duration (tmp->data);
if (start <= clip_start && clip_start < end)
clip_intersects = TRUE;
else if (start < clip_end && clip_end <= end)
clip_intersects = TRUE;
else if (clip_start < start && clip_end > end)
clip_intersects = TRUE;
if (clip_intersects)
intersecting_clips =
g_list_insert_sorted (intersecting_clips, tmp->data,
(GCompareFunc) element_start_compare);
}
return intersecting_clips;
}

2
ges/ges-layer.h
View file

@ -116,6 +116,8 @@ void ges_layer_set_priority (GESLayer * layer,
gboolean ges_layer_is_empty (GESLayer * layer);
GList* ges_layer_get_clips_in_interval (GESLayer * layer, GstClockTime start, GstClockTime end);
guint ges_layer_get_priority (GESLayer * layer);
gboolean ges_layer_get_auto_transition (GESLayer * layer);

108
tests/check/ges/layer.c
View file

@ -1753,6 +1753,113 @@ GST_START_TEST (test_layer_meta_foreach)
GST_END_TEST;
GST_START_TEST (test_layer_get_clips_in_interval)
{
GESTimeline *timeline;
GESLayer *layer;
GESClip *clip, *clip2, *clip3;
GList *objects, *current;
ges_init ();
timeline = ges_timeline_new_audio_video ();
layer = ges_layer_new ();
ges_timeline_add_layer (timeline, layer);
clip = (GESClip *) ges_test_clip_new ();
fail_unless (clip != NULL);
g_object_set (clip, "start", 10, "duration", 30, NULL);
assert_equals_uint64 (_START (clip), 10);
assert_equals_uint64 (_DURATION (clip), 30);
ges_layer_add_clip (layer, GES_CLIP (clip));
/* Clip's start lies between the interval */
current = objects = ges_layer_get_clips_in_interval (layer, 0, 30);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
current = objects = ges_layer_get_clips_in_interval (layer, 0, 11);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
/* Clip's end lies between the interval */
current = objects = ges_layer_get_clips_in_interval (layer, 30, 50);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
current = objects = ges_layer_get_clips_in_interval (layer, 39, 50);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
/* Clip exactly overlaps the interval */
current = objects = ges_layer_get_clips_in_interval (layer, 10, 40);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
/* Clip completely inside the interval */
current = objects = ges_layer_get_clips_in_interval (layer, 0, 50);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
/* Interval completely inside the clip duration */
current = objects = ges_layer_get_clips_in_interval (layer, 20, 30);
assert_equals_int (g_list_length (objects), 1);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
/* No intersecting clip */
objects = ges_layer_get_clips_in_interval (layer, 0, 10);
assert_equals_int (g_list_length (objects), 0);
objects = ges_layer_get_clips_in_interval (layer, 40, 50);
assert_equals_int (g_list_length (objects), 0);
/* Multiple intersecting clips */
clip2 = (GESClip *) ges_test_clip_new ();
fail_unless (clip2 != NULL);
g_object_set (clip2, "start", 50, "duration", 10, NULL);
assert_equals_uint64 (_START (clip2), 50);
assert_equals_uint64 (_DURATION (clip2), 10);
ges_layer_add_clip (layer, GES_CLIP (clip2));
clip3 = (GESClip *) ges_test_clip_new ();
fail_unless (clip3 != NULL);
g_object_set (clip3, "start", 0, "duration", 5, NULL);
assert_equals_uint64 (_START (clip3), 0);
assert_equals_uint64 (_DURATION (clip3), 5);
ges_layer_add_clip (layer, GES_CLIP (clip3));
/**
* Our timeline:
* -------------
*
* |-------- 0--------------- 0--------- |
* layer: | clip3 | | clip | | clip2 | |
* |-------05 10-------------40 50--------60 |
* |--------------------------------------------------|
*
*/
current = objects = ges_layer_get_clips_in_interval (layer, 4, 52);
assert_equals_int (g_list_length (objects), 3);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip3));
current = current->next;
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
current = current->next;
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip2));
current = objects = ges_layer_get_clips_in_interval (layer, 39, 65);
assert_equals_int (g_list_length (objects), 2);
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip));
current = current->next;
fail_unless (current->data == GES_TIMELINE_ELEMENT (clip2));
}
GST_END_TEST;
static Suite *
ges_suite (void)
{
@ -1784,6 +1891,7 @@ ges_suite (void)
tcase_add_test (tc_chain, test_layer_meta_value);
tcase_add_test (tc_chain, test_layer_meta_register);
tcase_add_test (tc_chain, test_layer_meta_foreach);
tcase_add_test (tc_chain, test_layer_get_clips_in_interval);
return s;
}