[Bug 739854] validate:scenario: Properly handle ASYNC action execution in the API

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=739854
  GStreamer | gst-devtools | unspecified

Thibault Saunier <tsaunier> changed:

           What    |Removed                     |Added
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 Attachment #290283|0                           |1
        is obsolete|                            |

--- Comment #3 from Thibault Saunier <tsaunier at gnome.org> 2014-11-11 20:15:33 UTC ---
Created an attachment (id=290433)
 View: https://bugzilla.gnome.org/attachment.cgi?id=290433
 Review: https://bugzilla.gnome.org/review?bug=739854&attachment=290433

validate:scenario: Properly handle ASYNC action execution in the API

The ->execute function now return a GstValidateExecuteActionReturn
which can be set as ASYNC in order to tell the scenario that the action
will be executed asynchronously, when the action is done, the caller is
responsible for calling gst_validate_action_set_done(); so that the
scenario keeps going on.

In this commit we make sure that the old API keeps working as
GST_VALIDATE_EXECUTE_ACTION_ERROR == FALSE and
GST_VALIDATE_EXECUTE_ACTION_OK == TRUE

Morevover GstValidateExecuteActionReturn is just a define

API:
    + gst_validate_action_set_done
    + GstValidateExecuteActionReturn

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