decodebin

decodebin — Autoplug and decode to raw media

Synopsis

struct              GstDecodeBin;

Object Hierarchy

  GObject
   +----GstObject
         +----GstElement
               +----GstBin
                     +----GstDecodeBin

Implemented Interfaces

GstDecodeBin implements GstChildProxy.

Properties

  "threaded"                 gboolean              : Read / Write
  "sink-caps"                GstCaps*              : Read / Write

Signals

  "new-decoded-pad"                                : Run Last
  "removed-decoded-pad"                            : Run Last
  "unknown-type"                                   : Run Last

Description

GstBin that auto-magically constructs a decoding pipeline using available decoders and demuxers via auto-plugging.

When using decodebin in your application, connect a signal handler to "new-decoded-pad" and connect your sinks from within the callback function.

Synopsis

Element Information

plugin decodebin
author Wim Taymans <wim.taymans@gmail.com>
class Generic/Bin/Decoder

Element Pads

name src%d
direction source
presence sometimes
details ANY
name sink
direction sink
presence always
details ANY

Details

struct GstDecodeBin

struct GstDecodeBin;

Auto-plugging decoder element structure

Property Details

The "threaded" property

  "threaded"                 gboolean              : Read / Write

Use threads.

Default value: FALSE

The "sink-caps" property

  "sink-caps"                GstCaps*              : Read / Write

The caps of the input data. (NULL = use typefind element).

Signal Details

The "new-decoded-pad" signal

void                user_function                      (GstDecodeBin *bin,
                                                        GstPad       *pad,
                                                        gboolean      islast,
                                                        gpointer      user_data)      : Run Last

This signal gets emitted as soon as a new pad of the same type as one of the valid 'raw' types is added.

bin : The decodebin
pad : The newly created pad
islast : TRUE if this is the last pad to be added. Deprecated.
user_data : user data set when the signal handler was connected.

The "removed-decoded-pad" signal

void                user_function                      (GstDecodeBin *bin,
                                                        GstPad       *pad,
                                                        gpointer      user_data)      : Run Last

This signal is emitted when a 'final' caps pad has been removed.

bin : The decodebin
pad : The pad that was removed
user_data : user data set when the signal handler was connected.

The "unknown-type" signal

void                user_function                      (GstDecodeBin *bin,
                                                        GstPad       *pad,
                                                        GstCaps      *caps,
                                                        gpointer      user_data)      : Run Last

This signal is emitted when a pad for which there is no further possible decoding is added to the decodebin.

bin : The decodebin
pad : The new pad containing caps that cannot be resolved to a 'final' stream type.
caps : The GstCaps of the pad that cannot be resolved.
user_data : user data set when the signal handler was connected.
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