typefind

typefind — Finds the media type of a stream

Synopsis

struct              GstTypeFindElement;

Object Hierarchy

  GObject
   +----GstObject
         +----GstElement
               +----GstTypeFindElement

Properties

  "caps"                     GstCaps*              : Read
  "maximum"                  guint                 : Read / Write
  "minimum"                  guint                 : Read / Write
  "force-caps"               GstCaps*              : Read / Write

Signals

  "have-type"                                      : Run First

Description

Determines the media-type of a stream. It applies typefind functions in the order of their rank. One the type has been deteted it sets its src pad caps to the found media type.

Whenever a type is found the "have-type" signal is emitted, either from the streaming thread or the application thread (the latter may happen when typefinding is done pull-based from the state change function).

Plugins can register custom typefinders by using GstTypeFindFactory.

Synopsis

Element Information

plugin

 coreelements

author

 Benjamin Otte <in7y118@public.uni-hamburg.de>

class

 Generic

Element Pads

name

 sink

direction

 sink

presence

 always

details

 ANY

name

 src

direction

 source

presence

 always

details

 ANY

Details

struct GstTypeFindElement

struct GstTypeFindElement;

Opaque GstTypeFindElement data structure

Property Details

The "caps" property

  "caps"                     GstCaps*              : Read

detected capabilities in stream.

The "maximum" property

  "maximum"                  guint                 : Read / Write

probability to stop typefinding (deprecated; non-functional).

Allowed values: [1,100]

Default value: 100

The "minimum" property

  "minimum"                  guint                 : Read / Write

minimum probability required to accept caps.

Allowed values: [1,100]

Default value: 1

The "force-caps" property

  "force-caps"               GstCaps*              : Read / Write

force caps without doing a typefind.

Signal Details

The "have-type" signal

void                user_function                      (GstTypeFindElement *typefind,
                                                        guint               probability,
                                                        GstCaps            *caps,
                                                        gpointer            user_data)        : Run First

This signal gets emitted when the type and its probability has been found.

typefind :

 the typefind instance

probability :

 the probability of the type found

caps :

 the caps of the type found

user_data :

 user data set when the signal handler was connected.
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