appsink

appsink — Allow the application to get access to raw buffer

Synopsis

struct              GstAppSink;

Object Hierarchy

  GObject
   +----GstObject
         +----GstElement
               +----GstBaseSink
                     +----GstAppSink

Implemented Interfaces

GstAppSink implements GstURIHandler.

Properties

  "caps"                     GstCaps*              : Read / Write
  "drop"                     gboolean              : Read / Write
  "emit-signals"             gboolean              : Read / Write
  "eos"                      gboolean              : Read
  "max-buffers"              guint                 : Read / Write

Signals

  "eos"                                            : Run Last
  "new-buffer"                                     : Run Last
  "new-preroll"                                    : Run Last
  "pull-buffer"                                    : Action
  "pull-preroll"                                   : Action
  "new-buffer-list"                                : Run Last
  "pull-buffer-list"                               : Action

Description

Appsink is a sink plugin that supports many different methods for making the application get a handle on the GStreamer data in a pipeline. Unlike most GStreamer elements, Appsink provides external API functions.

For the documentation of the API, please see the libgstapp section in the GStreamer Plugins Base Libraries documentation.

Synopsis

Element Information

plugin

app

author

David Schleef <ds@schleef.org>, Wim Taymans <wim.taymans@gmail.com>

class

Generic/Sink

Element Pads

name

sink

direction

sink

presence

always

details

ANY

Details

struct GstAppSink

struct GstAppSink;

Property Details

The "caps" property

  "caps"                     GstCaps*              : Read / Write

The allowed caps for the sink pad.


The "drop" property

  "drop"                     gboolean              : Read / Write

Drop old buffers when the buffer queue is filled.

Default value: FALSE


The "emit-signals" property

  "emit-signals"             gboolean              : Read / Write

Emit new-preroll, new-buffer and new-buffer-list signals.

Default value: FALSE


The "eos" property

  "eos"                      gboolean              : Read

Check if the sink is EOS or not started.

Default value: TRUE


The "max-buffers" property

  "max-buffers"              guint                 : Read / Write

The maximum number of buffers to queue internally (0 = unlimited).

Default value: 0

Signal Details

The "eos" signal

void                user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Run Last

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.

The "new-buffer" signal

void                user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Run Last

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.

The "new-preroll" signal

void                user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Run Last

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.

The "pull-buffer" signal

GstBuffer*          user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Action

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.

The "pull-preroll" signal

GstBuffer*          user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Action

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.

The "new-buffer-list" signal

void                user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Run Last

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.

The "pull-buffer-list" signal

GstBufferList*      user_function                      (GstAppSink *gstappsink,
                                                        gpointer    user_data)       : Action

gstappsink :

the object which received the signal.

user_data :

user data set when the signal handler was connected.