Mathieu Duponchelle
ff3cce38b6
line21dec: relax caps requirements
...
Instead of requiring interlaced video, simply skip CC detection
when the input is progressive.
This allows placing line21decoder unconditionally in pipelines,
without having to worry about whether the input stream will be
interlaced, or even worse interlacing just in case!
+ update doc cache
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1885 >
2021-04-03 00:42:15 +00:00
Mathieu Duponchelle
42586dd536
line21dec: expose mode property
...
That new property can be used to control whether and how
detected CC meta should be inserted in the list of existing
CC meta on the input frame (if there was any).
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1885 >
2021-04-03 00:42:14 +00:00
Mathieu Duponchelle
c915cb923e
line21dec: expose ntsc-only property
...
When this is set, the element only tries to detect CC when the
height is 525 or 486 (NTSC resolutions). The height is already
checked.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1885 >
2021-04-03 00:42:14 +00:00
Stéphane Cerveau
bbe3eecd3f
closedcaption: allow per feature registration
...
Split plugin into features including
dynamic types which can be indiviually
registered during a static build.
More details here:
https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/199
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/661
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2038 >
2021-03-23 14:19:16 +00:00
Tim-Philipp Müller
6dad8b7c78
closedcaption: fix leak in line21 decoder
...
Destroy old decoder instance when shutting down the
element, and also in case the input format changes.
Fix harness/pipeline leak in unit test.
2019-03-08 01:18:39 +00:00
Mathieu Duponchelle
919cd44f47
line21dec: general cleanup
...
This ports over the review comments made on line21enc in !217
2019-03-06 11:29:20 +01:00
Sebastian Dröge
48f48cc4ba
closedcaption: Replace GST_VIDEO_CAPTION_TYPE_CEA608_IN_CEA708_RAW with CEA608_S334_1A
...
As a side-effect we can now actually store the line offset in the
line21dec element, and have to perform fewer transformations in the
decklink elements (which were also buggy as they assumed a single byte
triplet per meta).
2018-12-15 21:31:28 +00:00
Sebastian Dröge
f9e4ed99b0
line21dec: If CCs are not found at the previous line, reset and search from the beginning again
2018-12-15 21:31:28 +00:00
Sebastian Dröge
36ba1e80b6
line21dec: Don't read more lines than the height of the frame
2018-12-15 21:31:28 +00:00
Edward Hervey
2a1553cb88
closedcaption: Add new "line 21 VBI" CC decoder
...
Allows detecting and extracting CEA608 closed caption present on
the VBI of analog NTSC SD signals.
2018-05-28 15:03:57 +02:00
