Commit graph

6 commits

Author SHA1 Message Date
Sebastian Dröge
fd1a31ee11 video-anc: Add API for converting GstVideoCaptionType from/to GstCaps 2018-12-15 21:31:14 +00:00
Sebastian Dröge
1eb3a20617 video-anc: Replace GST_VIDEO_CAPTION_TYPE_CEA608_IN_CEA708_RAW with CEA608_S334_1A
CEA608_IN_CEA708_RAW is the same format as CEA708_RAW. It's only
difference is that it must contain only CEA608 and a format like this
does not exist in practice. In practice every element that handles raw
cc_data triplets must check each triplet for their actual content and
handle them accordingly.

For CC-only streams a parser could signal the existence of CEA608 and/or
CEA708 inside the caps but for metas this can only potentially be
signalled via the ALLOCATION query for negotiation purposes.

A separate format for this is not very useful and instead it should be a
format qualifier.

CEA608_S334_1A is the format defined by SMPTE S334-1 Annex A and which
is used for transferring CEA608 over SDI instead of CEA708 CDP packets.
2018-12-15 21:31:14 +00:00
Tim-Philipp Müller
179409e9b3 video: fix typo in GstVideoCaptionType docs 2018-11-29 20:51:18 +00:00
Sebastian Dröge
6e9c71e6c1 video-anc: Implement a VBI encoder
This allows writing out data from caption meta and similar to VBI
2018-11-12 14:09:28 +00:00
Sebastian Dröge
ca702a9190 video-anc: Fix documentation about SDID_block_number field
It was giving type 2 for both variants.
2018-11-12 13:14:57 +00:00
Edward Hervey
9dceb6ca52 video: Add support for VANC and Closed Caption
This commits add common elements for Ancillary Data and Closed
Caption support in GStreamer:

* A VBI (Video Blanking Interval) parser that supports detection
  and extraction of Ancillary data according to the SMPTE S291M
  specification. Currently supports the v210 and UYVY video
  formats.

* A new GstMeta for Closed Caption : GstVideoCaptionMeta. This
  supports the two types of CC : CEA-608 and CEA-708, along with
  the 4 different ways they can be transported (other systems
  are super-set of those).

https://bugzilla.gnome.org/show_bug.cgi?id=794901
2018-04-09 15:15:24 +02:00