adder

adder — Add N audio channels together

Properties

GstCaps * caps Read / Write

Types and Values

struct GstAdder

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstAdder

Implemented Interfaces

GstAdder implements GstChildProxy.

Description

The adder allows to mix several streams into one by adding the data. Mixed data is clamped to the min/max values of the data format.

The adder currently mixes all data received on the sinkpads as soon as possible without trying to synchronize the streams.

Example launch line

1
gst-launch audiotestsrc freq=100 ! adder name=mix ! audioconvert ! alsasink audiotestsrc freq=500 ! mix.
This pipeline produces two sine waves mixed together.

Last reviewed on 2006-05-09 (0.10.7)

Synopsis

Element Information

plugin

adder

author

Thomas Vander Stichele <thomas at apestaart dot org>

class

Generic/Audio

Element Pads

name

sink_%u

direction

sink

presence

request

details

audio/x-raw, format=(string){ S32LE, U32LE, S16LE, U16LE, S8, U8, F32LE, F64LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string){ interleaved, non-interleaved }

name

src

direction

source

presence

always

details

audio/x-raw, format=(string){ S32LE, U32LE, S16LE, U16LE, S8, U8, F32LE, F64LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string){ interleaved, non-interleaved }

Functions

Types and Values

struct GstAdder

struct GstAdder;

The adder object structure.

Property Details

The “caps” property

  “caps”                     GstCaps *

Set target format for mixing (NULL means ANY). Setting this property takes a reference to the supplied GstCaps object.

Flags: Read / Write