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v4l2src: Prepend to lists and reverse them at the end.

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Gratuitous micro-optimisation - prepend to lists and reverse them, rather
than appending to them each time.
This commit is contained in:
Jan Schmidt 2009-03-13 15:43:52 +00:00
parent 608d13d462
commit a32581abee
1 changed files with 7 additions and 3 deletions
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10
sys/v4l2/v4l2_calls.c
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@ -181,8 +181,9 @@ gst_v4l2_fill_lists (GstV4l2Object * v4l2object)
}
v4l2object->channels =
g_list_append (v4l2object->channels, (gpointer) channel);
g_list_prepend (v4l2object->channels, (gpointer) channel);
}
v4l2object->channels = g_list_reverse (v4l2object->channels);
GST_DEBUG_OBJECT (e, " norms");
/* norms... */
@ -221,8 +222,9 @@ gst_v4l2_fill_lists (GstV4l2Object * v4l2object)
standard.frameperiod.denominator, standard.frameperiod.numerator);
v4l2norm->index = standard.id;
v4l2object->norms = g_list_append (v4l2object->norms, (gpointer) norm);
v4l2object->norms = g_list_prepend (v4l2object->norms, (gpointer) norm);
}
v4l2object->norms = g_list_reverse (v4l2object->norms);
GST_DEBUG_OBJECT (e, " controls+menus");
/* and lastly, controls+menus (if appropriate) */
@ -364,8 +366,10 @@ gst_v4l2_fill_lists (GstV4l2Object * v4l2object)
break;
}
v4l2object->colors = g_list_append (v4l2object->colors, (gpointer) channel);
v4l2object->colors =
g_list_prepend (v4l2object->colors, (gpointer) channel);
}
v4l2object->colors = g_list_reverse (v4l2object->colors);
GST_DEBUG_OBJECT (e, "done");
return TRUE;