Forbid GstVaapiObject to be created without an associated klass spec.
It is mandatory that the subclass implements an adequate .finalize()
hook, so it shall provide a valid GstVaapiObjectClass.
https://bugzilla.gnome.org/show_bug.cgi?id=722757
[made non-NULL klass argument to gst_vaapi_object_new() a requirement]
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Call the subclass .init() function in gst_vaapi_object_new(), if
needed. The default behaviour is to zero initialize the subclass
object data, then the .init() function can be used to initialize
fields to non-default values, e.g. VA object ids to VA_INVALID_ID.
Also fix the gst_vaapi_object_new() description, which was merely
copied from GstVaapiMiniObject.
https://bugzilla.gnome.org/show_bug.cgi?id=722757
[changed to always zero initialize the subclass]
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Drop obsolete GST_VAAPI_IS_xxx() helper macros since we are no longer
deriving from GObject and so those were only checking for whether the
argument was NULL or not. This is now irrelevant, and even confusing
to some extent, because we no longer have type checking.
Note: this incurs more type checking (review) but the libgstvaapi is
rather small, so this is manageable.
Make GstVaapiID a gsize instead of guessing an underlying integer large
enough to hold all bits of a pointer. Also drop GST_VAAPI_ID_NONE since
this is plain zero and that it is no longer passed as varargs.
This is a preferred thread-safe version. Also add an inline version of
g_clear_object() if compiling with glib < 2.28.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
