v4l2sink

v4l2sink

Synopsis

struct              GstV4l2Sink;

Implemented Interfaces

GstV4l2Sink implements GstImplementsInterface, GstXOverlay, GstNavigation, GstColorBalance, GstVideoOrientation and GstPropertyProbe.

Properties

  "device"                   gchar*                : Read / Write
  "device-fd"                gint                  : Read
  "device-name"              gchar*                : Read
  "flags"                    GstV4l2DeviceTypeFlags  : Read
  "overlay-height"           guint                 : Read / Write
  "overlay-left"             gint                  : Read / Write
  "overlay-top"              gint                  : Read / Write
  "overlay-width"            guint                 : Read / Write
  "queue-size"               guint                 : Read / Write
  "brightness"               gint                  : Read / Write
  "contrast"                 gint                  : Read / Write
  "hue"                      gint                  : Read / Write
  "saturation"               gint                  : Read / Write
  "crop-height"              guint                 : Read / Write
  "crop-left"                gint                  : Read / Write
  "crop-top"                 gint                  : Read / Write
  "crop-width"               guint                 : Read / Write
  "min-queued-bufs"          guint                 : Read / Write

Description

Details

struct GstV4l2Sink

struct GstV4l2Sink {
  GstVideoSink videosink;
};

Property Details

The "device" property

  "device"                   gchar*                : Read / Write

Device location.

Default value: "/dev/video1"


The "device-fd" property

  "device-fd"                gint                  : Read

File descriptor of the device.

Allowed values: >= -1

Default value: -1


The "device-name" property

  "device-name"              gchar*                : Read

Name of the device.

Default value: NULL


The "flags" property

  "flags"                    GstV4l2DeviceTypeFlags  : Read

Device type flags.


The "overlay-height" property

  "overlay-height"           guint                 : Read / Write

The height of the video overlay; default is equal to negotiated image height.

Default value: 0


The "overlay-left" property

  "overlay-left"             gint                  : Read / Write

The leftmost (x) coordinate of the video overlay; top left corner of screen is 0,0.

Default value: 0


The "overlay-top" property

  "overlay-top"              gint                  : Read / Write

The topmost (y) coordinate of the video overlay; top left corner of screen is 0,0.

Default value: 0


The "overlay-width" property

  "overlay-width"            guint                 : Read / Write

The width of the video overlay; default is equal to negotiated image width.

Default value: 0


The "queue-size" property

  "queue-size"               guint                 : Read / Write

Number of buffers to be enqueud in the driver in streaming mode.

Allowed values: [1,16]

Default value: 12


The "brightness" property

  "brightness"               gint                  : Read / Write

Picture brightness, or more precisely, the black level.

Default value: 0


The "contrast" property

  "contrast"                 gint                  : Read / Write

Picture contrast or luma gain.

Default value: 0


The "hue" property

  "hue"                      gint                  : Read / Write

Hue or color balance.

Default value: 0


The "saturation" property

  "saturation"               gint                  : Read / Write

Picture color saturation or chroma gain.

Default value: 0


The "crop-height" property

  "crop-height"              guint                 : Read / Write

The height of the video crop; default is equal to negotiated image height.

Default value: 0


The "crop-left" property

  "crop-left"                gint                  : Read / Write

The leftmost (x) coordinate of the video crop; top left corner of image is 0,0.

Default value: 0


The "crop-top" property

  "crop-top"                 gint                  : Read / Write

The topmost (y) coordinate of the video crop; top left corner of image is 0,0.

Default value: 0


The "crop-width" property

  "crop-width"               guint                 : Read / Write

The width of the video crop; default is equal to negotiated image width.

Default value: 0


The "min-queued-bufs" property

  "min-queued-bufs"          guint                 : Read / Write

Minimum number of queued bufs; v4l2sink won't dqbuf if the driver doesn't have more than this number (which normally you shouldn't change).

Allowed values: <= 16

Default value: 1