gstinsertbin

This element is a GstBin that has a single source and sink pad. It allows the user (the application) to easily add and remove filter-like element (that has a single source and sink pad), to the pipeline while it is running. It features a fully asynchronous API inspired by GLib's GAsyncResult based APIs.

Each operation (addition or removal) can take a callback, this callback is guaranteed to be called. Unlike GIO, there is no guarantee about where this callback will be called from, it could be called before the action returns or it could be called later from another thread. The signature of this callback GstInsertBinCallback.

Apart from the library API, since 1.24 insertbin can also be found in the registry:

  GstElement *pipeline, *insertbin, *videoflip;

  gst_init (NULL, NULL);
  pipeline =
      gst_parse_launch ("videotestsrc ! insertbin name=i ! autovideosink",
      NULL);

  ...

  insertbin = gst_bin_get_by_name (GST_BIN (pipeline), "i");
  videoflip = gst_element_factory_make ("videoflip", NULL);

  ...

  g_object_set (videoflip, "method", 1, NULL);
  g_signal_emit_by_name (insertbin, "append", videoflip, NULL, NULL);

  ...

GstInsertBin 

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBin
                    ╰──GstInsertBin

The object structure.

Members

parent (GstBin) –
No description available

Since : 1.2

Class structure

GstInsertBinClass

The object class structure.

Fields
parent_class (GstBinClass) –
No description available

Since : 1.2

Constructors

gst_insert_bin_new 

GstElement *
gst_insert_bin_new (const gchar * name)

Creates a new GstInsertBin

Parameters:

name ( [allow-none]) –

The name of the new GstInsertBin element (or NULL)

Returns –

The new GstInsertBin

Since : 1.2

Methods

gst_insert_bin_append 

gst_insert_bin_append (GstInsertBin * self,
                       GstElement * element,
                       GstInsertBinCallback callback,
                       gpointer user_data)

This action signal adds the filter like element after any other element in the bin.

Same as the append signal.

Parameters:

self –
No description available
element –

the GstElement to add

callback ( [scope async]) –

the callback to call when the element has been added or not, or NULL

user_data –

The data to pass to the callback

Since : 1.2

gst_insert_bin_insert_after 

gst_insert_bin_insert_after (GstInsertBin * self,
                             GstElement * element,
                             GstElement * sibling,
                             GstInsertBinCallback callback,
                             gpointer user_data)

This action signal adds the filter like element after the sibling element in the bin.

Same as the insert-after signal.

Parameters:

self –
No description available
element –

the GstElement to add

sibling –

the GstElement to add element after

callback ( [scope async]) –

the callback to call when the element has been added or not, or NULL

user_data –

The data to pass to the callback

Since : 1.2

gst_insert_bin_insert_before 

gst_insert_bin_insert_before (GstInsertBin * self,
                              GstElement * element,
                              GstElement * sibling,
                              GstInsertBinCallback callback,
                              gpointer user_data)

This action signal adds the filter like element before the sibling element in the bin.

Same as the insert-before signal.

Parameters:

self –
No description available
element –

the GstElement to add

sibling –

the GstElement to add element before

callback ( [scope async]) –

the callback to call when the element has been added or not, or NULL

user_data –

The data to pass to the callback

Since : 1.2

gst_insert_bin_prepend 

gst_insert_bin_prepend (GstInsertBin * self,
                        GstElement * element,
                        GstInsertBinCallback callback,
                        gpointer user_data)

This action signal adds the filter like element before any other element in the bin.

Same as the prepend signal.

Parameters:

self –
No description available
element –

the GstElement to add

callback ( [scope async]) –

the callback to call when the element has been added or not, or NULL

user_data –

The data to pass to the callback

Since : 1.2

gst_insert_bin_remove 

gst_insert_bin_remove (GstInsertBin * self,
                       GstElement * element,
                       GstInsertBinCallback callback,
                       gpointer user_data)

This action signal removed the filter like element from the bin.

Same as the remove signal.

Parameters:

self –
No description available
element –

the GstElement to remove

callback ( [scope async]) –

the callback to call when the element has been removed or not, or NULL

user_data –

The data to pass to the callback

Since : 1.2

Action Signals

append 

g_signal_emit_by_name (self, "append", callback, user_data, user_data2, user_data);

This action signal adds the filter like element after any other element in the bin.

Same as gst_insert_bin_append

Parameters:

self (GstInsertBin *) –
No description available
callback (GstElement *) –

the callback to call when the element has been added or not, or NULL

user_data (gpointer) –

The data to pass to the callback

user_data2 (gpointer) –

The user data of the signal (ignored)

user_data (gpointer) –

The data to pass to the callback

Flags: Run Last / Action

Since : 1.2

insert-after 

g_signal_emit_by_name (self, "insert-after", sibling, callback, user_data, user_data2, user_data);

This action signal adds the filter like element after the sibling element in the bin. element in the bin.

Same as gst_insert_bin_insert_after

Parameters:

self (GstInsertBin *) –
No description available
sibling (GstElement *) –

the GstElement to add element after

callback (GstElement *) –

the callback to call when the element has been added or not, or NULL

user_data (gpointer) –

The data to pass to the callback

user_data2 (gpointer) –

The user data of the signal (ignored)

user_data (gpointer) –

The data to pass to the callback

Flags: Run Last / Action

Since : 1.2

insert-before 

g_signal_emit_by_name (self, "insert-before", sibling, callback, user_data, user_data2, user_data);

This action signal adds the filter like element before the sibling element in the bin.

Same as gst_insert_bin_insert_before

Parameters:

self (GstInsertBin *) –
No description available
sibling (GstElement *) –

the GstElement to add element before

callback (GstElement *) –

the callback to call when the element has been added or not, or NULL

user_data (gpointer) –

The data to pass to the callback

user_data2 (gpointer) –

The user data of the signal (ignored)

user_data (gpointer) –

The data to pass to the callback

Flags: Run Last / Action

Since : 1.2

prepend 

g_signal_emit_by_name (self, "prepend", callback, user_data, user_data2, user_data);

This action signal adds the filter like element before any other element in the bin.

Same as gst_insert_bin_prepend

Parameters:

self (GstInsertBin *) –
No description available
callback (GstElement *) –

the callback to call when the element has been added or not, or NULL

user_data (gpointer) –

The data to pass to the callback

user_data2 (gpointer) –

The user data of the signal (ignored)

user_data (gpointer) –

The data to pass to the callback

Flags: Run Last / Action

Since : 1.2

remove 

g_signal_emit_by_name (self, "remove", callback, user_data, user_data2, user_data);

This action signal removed the filter like element from the bin.

Same as gst_insert_bin_remove

Parameters:

self (GstInsertBin *) –
No description available
callback (GstElement *) –

the callback to call when the element has been removed or not, or NULL

user_data (gpointer) –

The data to pass to the callback

user_data2 (gpointer) –

The user data of the signal (ignored)

user_data (gpointer) –

The data to pass to the callback

Flags: Run Last / Action

Since : 1.2

Constants

GST_INSERT_BIN_API 

#define GST_INSERT_BIN_API GST_API_EXPORT         /* from config.h */

Callbacks

GstInsertBinCallback 

(*GstInsertBinCallback) (GstInsertBin * insertbin,
                         GstElement * element,
                         gboolean success,
                         gpointer user_data)

This is the prototype of callbacks to be called when the operation completes. It could be called at any time, including as a re-entrant call while the operation is requested.

Parameters:

insertbin –

A GstInsertBin

element –

The GstElement on which the operation was performed

success –

TRUE if the operation was successful

user_data –

The user data passed

Since : 1.2

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