Tim-Philipp Müller
f04a9589d4
video: add video blend helper functions to docs
...
I don't think those were ever meant to be made public,
but they are, so we might as well document them.
2014-11-01 14:30:07 +00:00
Vineeth T M
2847a8108c
video-blend: segfault when xpos >= video size
...
When the xpos is given as greater than or equal to the video size,
we get a segfault, due to improper condition.
Hence adding proper conditions.
https://bugzilla.gnome.org/show_bug.cgi?id=738984
2014-10-27 10:29:15 +00:00
Luis de Bethencourt
3f5b9c4c8b
videoblend: Avoid assigning a negative value to a guint
...
There are some few but certain conditions where it is possible for the
dest_width to be smaller than x. So we check this before assigning a negative
value to src_width, which is a unsigned and would be promoted to a number that
can segfault videoblend.
https://bugzilla.gnome.org/show_bug.cgi?id=738242
2014-10-11 19:10:46 +01:00
Tim-Philipp Müller
377c806685
video: don't crash when blending onto video formats that unpack to 64 bits per pixel
...
We only allocate 8 bits per component for our temp buffers, which
causes invalid memory accesses if we try to unpack formats that
unpack into a format with 16 bits per component such as e.g. v210.
We don't support blending onto those yet, so just bail out.
2012-11-07 11:17:14 +00:00
Tim-Philipp Müller
5f59b4f7ee
Fix FSF address
...
https://bugzilla.gnome.org/show_bug.cgi?id=687520
2012-11-03 23:05:09 +00:00
Miguel Angel Cabrera Moya
2d8edb1e86
video-blend: fix memory leak when called with invalid parameters
...
https://bugzilla.gnome.org/show_bug.cgi?id=687472
2012-11-02 19:37:26 +00:00
Sreerenj Balachandran
1256d5ed71
video-blend: Doc fix
2012-07-24 12:56:46 +02:00
Wim Taymans
38552a2a8a
video: rename gst_video_orc_* to video_orc_*
...
Because then the functions would not be exported
2012-07-23 17:10:08 +02:00
Wim Taymans
e98c8538c5
orc: prefix orc functions with gst_video_orc_
...
See https://bugzilla.gnome.org/show_bug.cgi?id=680025
2012-07-23 16:56:55 +02:00
Wim Taymans
b392b28179
orc: rename to video-orc*
2012-07-23 16:52:33 +02:00
Mark Nauwelaerts
d03f926162
videoblend: use correct stride when scaling
2012-07-17 18:08:11 +02:00
Edward Hervey
3eb5378247
video-blend: Fix argument signedness
...
The x/y values are meant to be signed.
This bug was introduced by 76c0881549
2012-07-13 12:18:29 +02:00
Mark Nauwelaerts
e94022806f
videooverlaycomposition: port to 0.11
...
... which also entails porting video-blend
Fixes #678384 .
2012-06-28 18:16:20 +02:00
Wim Taymans
cdf55c7c7a
video-blend: prepare for 0.11 porting
...
Remove obsolete code.
Remove the BlendInfo structure, we can do this better with GstVideoFrame
Use GstVideoFrame in the API
Prefix functions with gst_
2012-05-30 09:25:12 +02:00
Wim Taymans
67587918f3
video-blend: remove unused defines
2012-05-29 17:52:06 +02:00
Edward Hervey
0a7d047b1f
video: Add GST_VIDEO_FORMAT_ENCODED
2012-04-24 10:44:44 +02:00
Tim-Philipp Müller
3242f55861
test: fix leak in video overlay composition unit test
...
gst_buffer_set_qdata() will leak the structure passed to it
when called incorrectly (e.g. on a non-metadata-writable buffer).
This is expected, but we must avoid doing that in valgrind.
2012-03-25 13:35:23 +01:00
Tim-Philipp Müller
35a17ac152
video: overlay-composition: blending micro-optimisation
2012-03-25 11:33:04 +01:00
Tim-Philipp Müller
79953f27a8
video: overlay-composition: try to avoid floating point maths in inner loop
...
Try to avoid floating point maths for each pixel to be blended in
inner loop, and try to avoid the multiplication entirely for the
most common case of the global alpha being 1. Could probably be
refactored a bit more.
2012-03-25 11:31:31 +01:00
Holger Kaelberer
76c0881549
video: overlay-composition: add support for global alpha multiplicator
...
https://bugzilla.gnome.org/show_bug.cgi?id=668483
2012-03-25 11:27:24 +01:00
Sebastian Dröge
1af6f94d84
video-blend: Actually allow negative offsets in the function signature too
2012-03-06 12:42:03 +01:00
Vincent Penquerc'h
5cf87eedc4
video: overlays may now have premultiplied alpha
...
https://bugzilla.gnome.org/show_bug.cgi?id=666177
2012-01-06 10:19:19 +00:00
Vincent Penquerc'h
ceeff69bc1
gstvideo: fix a RGB ordering mixup in colorspace conversion code
2011-12-20 19:55:53 +00:00
Thibault Saunier
80054a3b1e
video: add some internal helper functions for image blending
...
This could be improved if we decide we don't need it to
be this generic/flexible.
2011-12-05 15:03:47 +00:00
