Commit graph

21 commits

Author SHA1 Message Date
Edward Hervey
44390d9d1d decklinkvideosrc: Add support for extracting Closed Caption
If the "output-cc" property is set to TRUE and there is CC present
in the VBI Ancillary Data, they will be extracted and set on the
outgoing buffer as GstVideoCaptionMeta.

Only CDP packets are supported.

https://bugzilla.gnome.org/show_bug.cgi?id=773863
2018-04-23 16:16:06 +02:00
Vivia Nikolaidou
a3a7d2e0ff decklink: Detect gaps on incoming stream times, issue warnings
When we receive a video or audio buffer, we calculate the next stream
time based on the current stream time + buffer duration. If the next
buffer's stream time is after that, we issue a warning.

This happens because the stream time incoming from Decklink should be
really constant and without gaps. If there is a gap, it means that
something went wrong, e.g. the internal buffer pool is empty (too many
buffers queued up downstream).

https://bugzilla.gnome.org/show_bug.cgi?id=781776
2018-01-04 15:43:17 +02:00
Vivia Nikolaidou
42a03a8124 Revert "WIP: Revert "Revert "decklink: Detect gaps on incoming stream times, issue warnings"""
This reverts commit 8dceeb5ccd.
2018-01-04 15:41:51 +02:00
Vivia Nikolaidou
8dceeb5ccd WIP: Revert "Revert "decklink: Detect gaps on incoming stream times, issue warnings""
This reverts commit 07819afda4.
2018-01-04 13:54:37 +02:00
Vivia Nikolaidou
07819afda4 Revert "decklink: Detect gaps on incoming stream times, issue warnings"
This reverts commit c1294e10f9.

Was not ready to be pushed yet.
2017-11-07 21:12:42 +02:00
Vivia Nikolaidou
c1294e10f9 decklink: Detect gaps on incoming stream times, issue warnings
When we receive a video or audio buffer, we calculate the next stream
time based on the current stream time + buffer duration. If the next
buffer's stream time is after that, we issue a warning.

This happens because the stream time incoming from Decklink should be
really constant and without gaps. If there is a gap, it means that
something went wrong, e.g. the internal buffer pool is empty (too many
buffers queued up downstream).

https://bugzilla.gnome.org/show_bug.cgi?id=781776
2017-11-07 16:45:52 +02:00
Sebastian Dröge
d53da45886 decklink: Use GstQueueArray instead of GQueue
Let's save two allocations and frees per frame.
2017-03-24 14:26:39 +02:00
Sebastian Dröge
aec46143bb decklinksrc: Add property to drop frames that are marked as having no input signal
https://bugzilla.gnome.org/show_bug.cgi?id=774850
2016-11-28 14:27:51 +02:00
Sebastian Dröge
331b2af050 decklinksrc: Add property to skip the first N seconds of capture
On some hardware the first few frames are bogus and not very useful.
Their timestamps are off, they have no timecodes, or there are spurious
black frames / no-signal frames. After a few frames this stabilizes
though.

https://bugzilla.gnome.org/show_bug.cgi?id=774850
2016-11-28 14:27:51 +02:00
Sebastian Dröge
09dd64bb4f decklinksrc: Keep track of a window of capture/stream time mappings and calculate relationship
Based on this we calculate the actual capture time, which should get us
rid of any capturing jitter by averaging it out.

Also add a output-stream-time property which forces the elements to
output the stream time directly instead of doing any conversion to the
pipeline clock. Use with care.

https://bugzilla.gnome.org/show_bug.cgi?id=774850
2016-11-28 14:27:51 +02:00
Sebastian Dröge
881a08671e decklinksrc: Stop using the "hardware" timestamps and directly use the pipeline clock
The hardware timestamps have no relation to when frames were produced,
only when frames arrived somewhere in the hardware. Especially there is
no guarantee that audio and video will have the same hardware timestamps
although they belong together, and even more important: the rate with
which the hardware timestamps increase is completely unrelated to the
rate with which the frames are captured!

As such we can as well use the pipeline clock directly and stop doing
complicated calculations. Also as a side effect this allows now running
without any pipeline clock, by directly making use of the stream times
as reported by the driver.

https://bugzilla.gnome.org/show_bug.cgi?id=774850
2016-11-28 14:27:51 +02:00
Vivia Nikolaidou
85ef4166a2 decklinkvideosrc: Issue "no signal" warnings
When a frame is found to not have an associated input source (cable
unplugged, wrong mode selected), an element warning will be issued. When
the next frame in the stream is found to have an input source selected
(e.g. cable replugged), an element info will be issued.

https://bugzilla.gnome.org/show_bug.cgi?id=774629
2016-11-17 18:40:42 +02:00
Vivia Nikolaidou
8faa36e105 decklinkvideosrc: Add support for GstVideoTimeCode
The timecode will be fetched from the decklink source and attached to the
video buffer.

https://bugzilla.gnome.org/show_bug.cgi?id=766419
2016-08-04 19:08:27 +03:00
Vivia Nikolaidou
832764d2fd decklink: Add initial 10bit support for YUV modes
https://bugzilla.gnome.org/show_bug.cgi?id=742878
2016-05-03 15:57:23 +03:00
Julien Moutte
3ea431c5b5 decklinkvideosrc: implement RGB capture support
Combine mode and format to generate caps and support the flags from VideoChanged callback to support RGB capture.

https://bugzilla.gnome.org/show_bug.cgi?id=760594
2016-01-22 16:11:08 +01:00
Sebastian Dröge
f0e85023c2 decklink{audio,video}src: Implement clock slaving if the pipeline clock is not the decklink clock 2015-02-09 17:17:37 +01:00
Florian Langlois
9480d91ad4 decklinkvideosrc: Add automatic mode detection
https://bugzilla.gnome.org/show_bug.cgi?id=739284
2015-01-08 18:16:12 +01:00
Florian Langlois
81c1ef190d decklink: Add property for configuring the input connection of the video sources 2015-01-08 12:12:50 +01:00
Sebastian Dröge
ec90bbb6f3 decklink: Add property for configuring the buffer size of the sources 2014-12-19 14:40:40 +01:00
Sebastian Dröge
4ef676f109 decklink: Allow for a maximum of 5 packets to be queued up
In case downstream is a bit slow with consuming packets at times.
2014-12-19 14:40:40 +01:00
Sebastian Dröge
6d931a0c0e decklink: Add initial version of audio and video sources 2014-12-19 14:40:39 +01:00