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video: overlay-composition: fix rectangle caching after alpha (un)premultiplying

Browse source 
If we are asked to (un)premultiply,we need to create the new rectangle
with the right flags, so we can find it properly on subsequent cache
lookups (also because it's wrong otherwise).

https://bugzilla.gnome.org/show_bug.cgi?id=668483
This commit is contained in:
Holger Kaelberer 2012-03-14 17:28:57 +00:00 committed by Tim-Philipp Müller
parent 7a21d1eb32
commit 027f5bb471
1 changed files with 5 additions and 1 deletions

6
gst-libs/gst/video/video-overlay-composition.c
View file

@ -908,6 +908,7 @@ gst_video_overlay_rectangle_get_pixels_argb_internal (GstVideoOverlayRectangle *
rectangle, guint * stride, GstVideoOverlayFormatFlags flags,
gboolean unscaled)
{
GstVideoOverlayFormatFlags new_flags;
GstVideoOverlayRectangle *scaled_rect = NULL;
GstBlendVideoFormatInfo info;
GstBuffer *buf;
@ -960,11 +961,14 @@ gst_video_overlay_rectangle_get_pixels_argb_internal (GstVideoOverlayRectangle *
info.pixels = g_memdup (info.pixels, info.size);
}
new_flags = rectangle->flags;
if (!gst_video_overlay_rectangle_is_same_alpha_type (rectangle->flags, flags)) {
if (rectangle->flags & GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA) {
gst_video_overlay_rectangle_unpremultiply (&info);
new_flags &= ~GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA;
} else {
gst_video_overlay_rectangle_premultiply (&info);
new_flags |= GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA;
}
}
@ -975,7 +979,7 @@ gst_video_overlay_rectangle_get_pixels_argb_internal (GstVideoOverlayRectangle *
scaled_rect = gst_video_overlay_rectangle_new_argb (buf,
wanted_width, wanted_height, info.stride[0],
0, 0, wanted_width, wanted_height, rectangle->flags);
0, 0, wanted_width, wanted_height, new_flags);
gst_buffer_unref (buf);