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Farsight2 Reference Manual | |
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#include <gst/farsight/fs-element-added-notifier.h>
FsElementAddedNotifier;
FsElementAddedNotifier* fs_element_added_notifier_new (void);
void fs_element_added_notifier_add (FsElementAddedNotifier *notifier,
GstBin *bin);
gboolean fs_element_added_notifier_remove (FsElementAddedNotifier *notifier,
GstBin *bin);
void fs_element_added_notifier_set_properties_from_keyfile
(FsElementAddedNotifier *notifier,
GKeyFile *keyfile);
gboolean fs_element_added_notifier_set_properties_from_file
(FsElementAddedNotifier *notifier,
const gchar *filename,
GError **error);
This object can be attach to any GstBin and will emit a the "element-added" signal for every element inside the GstBin or any sub-bin and any element added in the future to the bin or its sub-bins. There is also a utility method to have it used to set the properties of elements based on a GKeyfile.
typedef struct _FsElementAddedNotifier FsElementAddedNotifier;
All members are private
FsElementAddedNotifier* fs_element_added_notifier_new (void);
Creates a new FsElementAddedNotifier object
| Returns : | the newly-created FsElementAddedNotifier |
void fs_element_added_notifier_add (FsElementAddedNotifier *notifier, GstBin *bin);
Add a GstBin to on which the "element-added" signal will be called on every element and sub-element present and added in the future.
notifier : |
a FsElementAddedNotifier |
bin : |
A GstBin to watch to added elements |
gboolean fs_element_added_notifier_remove (FsElementAddedNotifier *notifier, GstBin *bin);
Stop watching the passed bin and its subbins.
notifier : |
a FsElementAddedNotifier |
bin : |
A GstBin to stop watching |
| Returns : | TRUE if the GstBin was being watched, FALSE otherwise
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void fs_element_added_notifier_set_properties_from_keyfile
(FsElementAddedNotifier *notifier,
GKeyFile *keyfile);
Using a GKeyFile where the groups are the element's type and the key=value are the property and its value, this function will set the properties on the elements added to this object after this function has been called. It will take ownership of the GKeyFile structure.
notifier : |
a FsElementAddedNotifier |
keyfile : |
a GKeyFile |
gboolean fs_element_added_notifier_set_properties_from_file
(FsElementAddedNotifier *notifier,
const gchar *filename,
GError **error);
Same as fs_element_added_notifier_set_properties_from_keyfile() but using
the name of the file to load instead of the GKeyFile directly.
notifier : |
a FsElementAddedNotifier |
filename : |
The name of the keyfile to use |
error : |
location of a GError, or NULL if no error occured
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| Returns : | TRUE if the file was successfully loaded, FALSE otherwise
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"element-added" signalvoid user_function (FsElementAddedNotifier *self, GstBin *bin, GstElement *element, gpointer user_data) : Run Last
This signal is emitted when an element is added to a GstBin that was added
to this object or one of its sub-bins.
Be careful, there is no guarantee that this will be emitted on your
main thread, it will be emitted in the thread that added the element.
The bin may be NULL if this is the top-level bin.
self : |
FsElementAddedNotifier that emitted the signal |
bin : |
The GstBin to which this object was added |
element : |
The GstElement that was added |
user_data : |
user data set when the signal handler was connected. |