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caps: remove some custom refcounting methods

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Remove some custom made refcounting methods and use the miniobject ones instead.
This commit is contained in:
Wim Taymans 2011-06-02 13:18:39 +02:00
parent 2b9c34cd70
commit 9553ea1c07
2 changed files with 50 additions and 76 deletions
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71
gst/gstcaps.c
View file

@ -309,43 +309,6 @@ gst_caps_new_full_valist (GstStructure * structure, va_list var_args)
return caps;
}
/**
* gst_caps_make_writable:
* @caps: (transfer full): the #GstCaps to make writable
*
* Returns a writable copy of @caps.
*
* If there is only one reference count on @caps, the caller must be the owner,
* and so this function will return the caps object unchanged. If on the other
* hand there is more than one reference on the object, a new caps object will
* be returned. The caller's reference on @caps will be removed, and instead the
* caller will own a reference to the returned object.
*
* In short, this function unrefs the caps in the argument and refs the caps
* that it returns. Don't access the argument after calling this function. See
* also: gst_caps_ref().
*
* Returns: (transfer full): the same #GstCaps object.
*/
GstCaps *
gst_caps_make_writable (GstCaps * caps)
{
GstCaps *copy;
g_return_val_if_fail (caps != NULL, NULL);
/* we are the only instance reffing this caps */
if (IS_WRITABLE (caps))
return caps;
/* else copy */
GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "copy caps");
copy = _gst_caps_copy (caps);
gst_caps_unref (caps);
return copy;
}
GType
gst_static_caps_get_type (void)
{
@ -1782,40 +1745,6 @@ gst_caps_do_simplify (GstCaps * caps)
/* utility */
/**
* gst_caps_replace:
* @caps: (inout) (transfer full): a pointer to #GstCaps
* @newcaps: a #GstCaps to replace *caps
*
* Replaces *caps with @newcaps. Unrefs the #GstCaps in the location
* pointed to by @caps, if applicable, then modifies @caps to point to
* @newcaps. An additional ref on @newcaps is taken.
*
* This function does not take any locks so you might want to lock
* the object owning @caps pointer.
*/
void
gst_caps_replace (GstCaps ** caps, GstCaps * newcaps)
{
GstCaps *oldcaps;
g_return_if_fail (caps != NULL);
oldcaps = *caps;
GST_CAT_TRACE (GST_CAT_REFCOUNTING, "%p, %p -> %p", caps, oldcaps, newcaps);
if (newcaps != oldcaps) {
if (newcaps)
gst_caps_ref (newcaps);
*caps = newcaps;
if (oldcaps)
gst_caps_unref (oldcaps);
}
}
/**
* gst_caps_to_string:
* @caps: a #GstCaps

55
gst/gstcaps.h
View file

@ -254,6 +254,56 @@ gst_caps_copy (const GstCaps * caps)
return GST_CAPS (gst_mini_object_copy (GST_MINI_OBJECT_CAST (caps)));
}
/**
* gst_caps_is_writable:
* @caps: a #GstCaps
*
* Tests if you can safely modify @caps. It is only safe to modify caps when
* there is only one owner of the caps - ie, the refcount is 1.
*/
#define gst_caps_is_writable(caps) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (caps))
/**
* gst_caps_make_writable:
* @caps: (transfer full): a #GstCaps
*
* Returns a writable copy of @caps.
*
* If there is only one reference count on @caps, the caller must be the owner,
* and so this function will return the caps object unchanged. If on the other
* hand there is more than one reference on the object, a new caps object will
* be returned. The caller's reference on @caps will be removed, and instead the
* caller will own a reference to the returned object.
*
* In short, this function unrefs the caps in the argument and refs the caps
* that it returns. Don't access the argument after calling this function. See
* also: gst_caps_ref().
*
* Returns: (transfer full): a writable caps which may or may not be the
* same as @caps
*/
#define gst_caps_make_writable(caps) GST_CAPS_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (caps)))
/**
* gst_caps_replace:
* @ocaps: (inout) (transfer full): pointer to a pointer to a #GstCaps to be
* replaced.
* @ncaps: (transfer none) (allow-none): pointer to a #GstCaps that will
* replace the caps pointed to by @ocaps.
*
* Modifies a pointer to a #GstCaps to point to a different #GstCaps. The
* modification is done atomically (so this is useful for ensuring thread safety
* in some cases), and the reference counts are updated appropriately (the old
* caps is unreffed, the new is reffed).
*
* Either @ncaps or the #GstCaps pointed to by @ocaps may be NULL.
*/
#define gst_caps_replace(ocaps,ncaps) \
G_STMT_START { \
GstCaps **___ocapsaddr = (GstCaps **)(ocaps); \
gst_mini_object_replace ((GstMiniObject **)___ocapsaddr, \
GST_MINI_OBJECT_CAST (ncaps)); \
} G_STMT_END
/**
* GstCaps:
@ -298,9 +348,6 @@ GstCaps * gst_caps_new_full (GstStructure *struct1, ...)
GstCaps * gst_caps_new_full_valist (GstStructure *structure,
va_list var_args);
/* reference counting */
GstCaps * gst_caps_make_writable (GstCaps *caps) G_GNUC_WARN_UNUSED_RESULT;
GType gst_static_caps_get_type (void);
GstCaps * gst_static_caps_get (GstStaticCaps *static_caps);
@ -362,8 +409,6 @@ GstCaps * gst_caps_normalize (const GstCaps *caps);
gboolean gst_caps_do_simplify (GstCaps *caps);
/* utility */
void gst_caps_replace (GstCaps **caps,
GstCaps *newcaps);
gchar * gst_caps_to_string (const GstCaps *caps);
GstCaps * gst_caps_from_string (const gchar *string);