shmsink
Send data over shared memory to the matching source.
Example launch lines
gst-launch-1.0 -v videotestsrc ! "video/x-raw, format=YUY2, color-matrix=sdtv, \
chroma-site=mpeg2, width=(int)320, height=(int)240, framerate=(fraction)30/1" \
! shmsink socket-path=/tmp/blah shm-size=2000000
Send video to shm buffers.
Hierarchy
GObject ╰──GInitiallyUnowned ╰──GstObject ╰──GstElement ╰──GstBaseSink ╰──shmsink
Factory details
Authors: – Olivier Crete
Classification: – Sink
Rank – none
Plugin – gstshm
Package – GStreamer Bad Plug-ins
Pad Templates
Signals
client-connected
client_connected_callback (GstElement * param_0, gint arg0, gpointer udata)
def client_connected_callback (param_0, arg0, udata):
#python callback for the 'client-connected' signal
function client_connected_callback(param_0: GstElement * param_0, arg0: gint arg0, udata: gpointer udata): {
// javascript callback for the 'client-connected' signal
}
Parameters:
param_0
–
arg0
–
udata
–
Flags: Run Last
client-disconnected
client_disconnected_callback (GstElement * param_0, gint arg0, gpointer udata)
def client_disconnected_callback (param_0, arg0, udata):
#python callback for the 'client-disconnected' signal
function client_disconnected_callback(param_0: GstElement * param_0, arg0: gint arg0, udata: gpointer udata): {
// javascript callback for the 'client-disconnected' signal
}
Parameters:
param_0
–
arg0
–
udata
–
Flags: Run Last
Properties
blocksize
“blocksize” guint
Size in bytes to pull per buffer (0 = default)
Flags : Read / Write
Default value : 4096
buffer-time
“buffer-time” gint64
Maximum Size of the shm buffer in nanoseconds (-1 to disable)
Flags : Read / Write / Construct
Default value : 18446744073709551615
enable-last-sample
“enable-last-sample” gboolean
Enable the last-sample property
Flags : Read / Write
Default value : true
max-bitrate
“max-bitrate” guint64
The maximum bits per second to render (0 = disabled)
Flags : Read / Write
Default value : 0
max-lateness
“max-lateness” gint64
Maximum number of nanoseconds that a buffer can be late before it is dropped (-1 unlimited)
Flags : Read / Write
Default value : 18446744073709551615
processing-deadline
“processing-deadline” guint64
Maximum processing time for a buffer in nanoseconds
Flags : Read / Write
Default value : 20000000
qos
“qos” gboolean
Generate Quality-of-Service events upstream
Flags : Read / Write
Default value : false
render-delay
“render-delay” guint64
Additional render delay of the sink in nanoseconds
Flags : Read / Write
Default value : 0
shm-size
“shm-size” guint
Size of the shared memory area
Flags : Read / Write
Default value : 67108864
socket-path
“socket-path” gchararray
The path to the control socket used to control the shared memory transport. This may be modified during the NULL->READY transition
Flags : Read / Write
Default value : NULL
stats
“stats” GstStructure *
Sink Statistics
Flags : Read
Default value :
application/x-gst-base-sink-stats, average-rate=(double)0, dropped=(guint64)0, rendered=(guint64)0;
throttle-time
“throttle-time” guint64
The time to keep between rendered buffers (0 = disabled)
Flags : Read / Write
Default value : 0
wait-for-connection
“wait-for-connection” gboolean
Block the stream until the shm pipe is connected
Flags : Read / Write
Default value : true
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