Matthew Waters
21b232ce30
closedcaption: write 0x00 padding instead of 0x80 in cc_data/cdp
...
Depending on the exact output format, 0x00 may be a better default for
padding than 0x80. 0x00 is the recommended padding value when used in
CDP (and cc_data) but is not when used in s334-1a. See CTA-708-E 4.3.5
amd SMPTE 334-1-2007 5.3.2.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4578 >
2023-05-10 00:52:01 +00:00
Seungha Yang
9be36adaa3
cea608mux: Add support for seeking
...
The "start_time" should be cleared per flush in order to apply
new offset time to each output buffer. Also, input running time
must be compared with output running time, not output position.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4398 >
2023-04-12 08:57:03 +00:00
Seungha Yang
a3fd3ad4d7
cea608mux: Implement GstAggregator::clip
...
Drop buffers if it's outside of segment
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4398 >
2023-04-12 08:57:03 +00:00
Seungha Yang
1876e5c429
cea608mux: Fix output buffer timestamping
...
Don't assume that input stream starts from zero running time.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4319 >
2023-04-03 13:11:00 +00:00
Mathieu Duponchelle
e8c362ee34
cea608mux: advance segment->position when outputting
...
It is the responsibility of the subclass to advance segment->position if
it wants to rely on gst_aggregator_simple_get_next_time() for timeouts
in live mode.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4266 >
2023-03-24 21:17:58 +00:00
Mathieu Duponchelle
af714091aa
cea608mux: don't consume input buffers too early
...
CCBuffer has no notion of time, we need to push caption pairs in
it when it is ready for consumption and no earlier.
Also perform comparisons with our output running time, not the raw
output PTS.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4103 >
2023-03-03 13:16:24 +00:00
Mathieu Duponchelle
84d6323610
closedcaption: implement cea608muxer element
...
Wrapper aggregator around the CCBuffer internal utility, this
version only supports aggregating CC1 and CC3 608 streams together into
the s334-1a format.
The element exposes CC1 and CC3 request pads.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4084 >
2023-03-02 00:27:47 +00:00
