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Properties
| gboolean | block | Read / Write |
| GstCaps * | caps | Read / Write |
| guint64 | current-level-bytes | Read |
| gboolean | emit-signals | Read / Write |
| GstFormat | format | Read / Write |
| gboolean | is-live | Read / Write |
| guint64 | max-bytes | Read / Write |
| gint64 | max-latency | Read / Write |
| gint64 | min-latency | Read / Write |
| guint | min-percent | Read / Write |
| gint64 | size | Read / Write |
| GstAppStreamType | stream-type | Read / Write |
| guint64 | duration | Read / Write |
Object Hierarchy
GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstElement ╰── GstBaseSrc ╰── GstAppSrc
Description
The appsrc element can be used by applications to insert data into a GStreamer pipeline. Unlike most GStreamer elements, Appsrc provides external API functions.
For the documentation of the API, please see the
libgstapp section in theGStreamer Plugins Base Libraries documentation.
Synopsis
Element Information
plugin |
app |
author |
David Schleef <ds@schleef.org>, Wim Taymans <wim.taymans@gmail.com> |
class |
Generic/Source |
Property Details
The “block” property
“block” gboolean
Block push-buffer when max-bytes are queued.
Flags: Read / Write
Default value: FALSE
The “current-level-bytes” property
“current-level-bytes” guint64
The number of currently queued bytes.
Flags: Read
Default value: 0
The “emit-signals” property
“emit-signals” gboolean
Emit need-data, enough-data and seek-data signals.
Flags: Read / Write
Default value: TRUE
The “format” property
“format” GstFormat
The format of the segment events and seek.
Flags: Read / Write
Default value: GST_FORMAT_BYTES
The “is-live” property
“is-live” gboolean
Whether to act as a live source.
Flags: Read / Write
Default value: FALSE
The “max-bytes” property
“max-bytes” guint64
The maximum number of bytes to queue internally (0 = unlimited).
Flags: Read / Write
Default value: 200000
The “max-latency” property
“max-latency” gint64
The maximum latency (-1 = unlimited).
Flags: Read / Write
Allowed values: >= G_MAXULONG
Default value: -1
The “min-latency” property
“min-latency” gint64
The minimum latency (-1 = default).
Flags: Read / Write
Allowed values: >= G_MAXULONG
Default value: -1
The “min-percent” property
“min-percent” guint
Emit need-data when queued bytes drops below this percent of max-bytes.
Flags: Read / Write
Allowed values: <= 100
Default value: 0
The “size” property
“size” gint64
The size of the data stream in bytes (-1 if unknown).
Flags: Read / Write
Allowed values: >= G_MAXULONG
Default value: -1
The “stream-type” property
“stream-type” GstAppStreamType
the type of the stream.
Flags: Read / Write
Default value: GST_APP_STREAM_TYPE_STREAM
The “duration” property
“duration” guint64
The duration of the data stream in nanoseconds (GST_CLOCK_TIME_NONE if unknown).
Flags: Read / Write
Default value: 18446744073709551615
Signal Details
The “end-of-stream” signal
GstFlowReturn user_function (GstAppSrc *gstappsrc, gpointer user_data)
Flags: Action
The “enough-data” signal
void user_function (GstAppSrc *gstappsrc, gpointer user_data)
Flags: Run Last
The “need-data” signal
void user_function (GstAppSrc *gstappsrc, guint arg1, gpointer user_data)
Flags: Run Last
The “push-buffer” signal
GstFlowReturn user_function (GstAppSrc *gstappsrc, GstBuffer *arg1, gpointer user_data)
Flags: Action
The “seek-data” signal
gboolean user_function (GstAppSrc *gstappsrc, guint64 arg1, gpointer user_data)
Flags: Run Last
The “push-sample” signal
GstFlowReturn user_function (GstAppSrc *gstappsrc, GstSample *arg1, gpointer user_data)
Flags: Action
The “push-buffer-list” signal
GstFlowReturn user_function (GstAppSrc *gstappsrc, GstBufferList *arg1, gpointer user_data)
Flags: Action