capssetter

capssetter — Set/merge caps on stream

Synopsis

struct              GstCapsSetter;

Object Hierarchy

  GObject
   +----GInitiallyUnowned
         +----GstObject
               +----GstElement
                     +----GstBaseTransform
                           +----GstCapsSetter

Properties

  "caps"                     GstCaps*              : Read / Write
  "join"                     gboolean              : Read / Write
  "replace"                  gboolean              : Read / Write

Description

Sets or merges caps on a stream's buffers. That is, a buffer's caps are updated using (fields of) caps. Note that this may contain multiple structures (though not likely recommended), but each of these must be fixed (or will otherwise be rejected).

If join is TRUE, then the incoming caps' mime-type is compared to the mime-type(s) of provided caps and only matching structure(s) are considered for updating.

If replace is TRUE, then any caps update is preceded by clearing existing fields, making provided fields (as a whole) replace incoming ones. Otherwise, no clearing is performed, in which case provided fields are added/merged onto incoming caps

Although this element might mainly serve as debug helper, it can also practically be used to correct a faulty pixel-aspect-ratio, or to modify a yuv fourcc value to effectively swap chroma components or such alike.

Synopsis

Element Information

plugin

debug

author

Mark Nauwelaerts <mnauw@users.sourceforge.net>

class

Generic

Element Pads

name

sink

direction

sink

presence

always

details

ANY

name

src

direction

source

presence

always

details

ANY

Details

struct GstCapsSetter

struct GstCapsSetter;

Property Details

The "caps" property

  "caps"                     GstCaps*              : Read / Write

Merge these caps (thereby overwriting) in the stream.


The "join" property

  "join"                     gboolean              : Read / Write

Match incoming caps' mime-type to mime-type of provided caps.

Default value: TRUE


The "replace" property

  "replace"                  gboolean              : Read / Write

Drop fields of incoming caps.

Default value: FALSE