mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-07-02 20:55:55 +00:00
Code Issues 1 Projects Releases Wiki Activity

docs: update negotiation docs

Browse source 
Mention that the acceptcaps query does not have to be recursive
This commit is contained in:
Wim Taymans 2012-06-05 11:28:38 +02:00
parent 70c3a752be
commit 4affde2a4f
1 changed files with 9 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
docs/design/part-negotiation.txt
View file

@ -31,6 +31,8 @@ Queries
A pad can ask the peer pad for its supported GstCaps. It does this with
the CAPS query. The list of supported caps can be used to choose an
appropriate GstCaps for the data transfer.
The CAPS query works recursively, elements should take their peers into
consideration when constructing the possible caps.
(in) "filter", GST_TYPE_CAPS (default NULL)
- a GstCaps to filter the results against
@ -39,11 +41,15 @@ appropriate GstCaps for the data transfer.
- the result caps
A pad can ask the peer pad if it supports a given caps. It does this with
the ACCEPT_CAPS query.
the ACCEPT_CAPS query. The caps must be fixed.
The ACCEPT_CAPS query is not required to work recursively, it can simply
return TRUE if a subsequent CAPS event with those caps would return
success.
(in) "caps", GST_TYPE_CAPS
- a GstCaps to check
- a GstCaps to check, must be fixed
(out) "result", G_TYPE_BOOLEAN (default FALSE)
- TRUE if the caps are accepted
@ -56,7 +62,7 @@ When a media format is negotiated, peer elements are notified of the GstCaps
with the CAPS event. The caps must be fixed.
"caps", GST_TYPE_CAPS
- the negotiated GstCaps
- the negotiated GstCaps, must be fixed
Operation