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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>appsrc: GStreamer Base Plugins 1.0 Plugins Reference Manual</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
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<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Plugins Reference Manual">
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<link rel="up" href="ch01.html" title="gst-plugins-base Elements">
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<link rel="prev" href="gst-plugins-base-plugins-alsasrc.html" title="alsasrc">
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<link rel="next" href="gst-plugins-base-plugins-audioconvert.html" title="audioconvert">
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<meta name="generator" content="GTK-Doc V1.27 (XML mode)">
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<link rel="stylesheet" href="style.css" type="text/css">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Top |
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Description |
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Object Hierarchy |
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Implemented Interfaces |
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Properties |
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Signals
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appsrc
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appsrc
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Properties
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gboolean
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block
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Read / Write
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GstCaps *
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caps
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Read / Write
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guint64
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current-level-bytes
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Read
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gboolean
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emit-signals
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Read / Write
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GstFormat
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format
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Read / Write
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gboolean
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is-live
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Read / Write
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guint64
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max-bytes
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Read / Write
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gint64
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max-latency
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Read / Write
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gint64
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min-latency
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Read / Write
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guint
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min-percent
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Read / Write
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gint64
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size
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Read / Write
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GstAppStreamType
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stream-type
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Read / Write
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guint64
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duration
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Read / Write
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Signals
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GstFlowReturn
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end-of-stream
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Action
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void
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enough-data
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Run Last
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void
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need-data
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Run Last
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GstFlowReturn
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push-buffer
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Action
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gboolean
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seek-data
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Run Last
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GstFlowReturn
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push-sample
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Action
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GstFlowReturn
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push-buffer-list
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Action
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Types and Values
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struct
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GstAppSrc
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Object Hierarchy
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GObject
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╰── GInitiallyUnowned
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╰── GstObject
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╰── GstElement
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╰── GstBaseSrc
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╰── GstAppSrc
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Implemented Interfaces
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GstAppSrc implements
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GstURIHandler.
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Description
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The appsrc element can be used by applications to insert data into a
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GStreamer pipeline. Unlike most GStreamer elements, Appsrc provides
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external API functions.
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For the documentation of the API, please see the
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libgstapp section in the
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GStreamer Plugins Base Libraries documentation.
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Synopsis
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Element Information
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plugin
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app
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author
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David Schleef <ds@schleef.org>, Wim Taymans <wim.taymans@gmail.com>
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class
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Generic/Source
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Element Pads
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name
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src
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direction
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source
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presence
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always
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details
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ANY
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Functions
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Types and Values
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struct GstAppSrc
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struct GstAppSrc;
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Property Details
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The “block” property
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“block” gboolean
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Block push-buffer when max-bytes are queued.
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Flags: Read / Write
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Default value: FALSE
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The “caps” property
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“caps” GstCaps *
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The allowed caps for the src pad.
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Flags: Read / Write
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The “current-level-bytes” property
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“current-level-bytes” guint64
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The number of currently queued bytes.
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Flags: Read
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Default value: 0
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The “emit-signals” property
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“emit-signals” gboolean
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Emit need-data, enough-data and seek-data signals.
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Flags: Read / Write
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Default value: TRUE
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The “format” property
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“format” GstFormat
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The format of the segment events and seek.
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Flags: Read / Write
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Default value: GST_FORMAT_BYTES
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The “is-live” property
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“is-live” gboolean
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Whether to act as a live source.
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Flags: Read / Write
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Default value: FALSE
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The “max-bytes” property
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“max-bytes” guint64
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The maximum number of bytes to queue internally (0 = unlimited).
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Flags: Read / Write
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Default value: 200000
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The “max-latency” property
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“max-latency” gint64
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The maximum latency (-1 = unlimited).
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Flags: Read / Write
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Allowed values: >= G_MAXULONG
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Default value: -1
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The “min-latency” property
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“min-latency” gint64
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The minimum latency (-1 = default).
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Flags: Read / Write
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Allowed values: >= G_MAXULONG
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Default value: -1
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The “min-percent” property
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“min-percent” guint
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Emit need-data when queued bytes drops below this percent of max-bytes.
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Flags: Read / Write
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Allowed values: <= 100
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Default value: 0
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The “size” property
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“size” gint64
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The size of the data stream in bytes (-1 if unknown).
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Flags: Read / Write
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Allowed values: >= G_MAXULONG
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Default value: -1
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The “stream-type” property
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“stream-type” GstAppStreamType
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the type of the stream.
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Flags: Read / Write
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Default value: GST_APP_STREAM_TYPE_STREAM
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The “duration” property
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“duration” guint64
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The duration of the data stream in nanoseconds (GST_CLOCK_TIME_NONE if unknown).
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Flags: Read / Write
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Default value: 18446744073709551615
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Signal Details
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The “end-of-stream” signal
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GstFlowReturn
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user_function (GstAppSrc *gstappsrc,
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gpointer user_data)
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Flags: Action
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The “enough-data” signal
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void
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user_function (GstAppSrc *gstappsrc,
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gpointer user_data)
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Flags: Run Last
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The “need-data” signal
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void
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user_function (GstAppSrc *gstappsrc,
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guint arg1,
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gpointer user_data)
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Flags: Run Last
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The “push-buffer” signal
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GstFlowReturn
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user_function (GstAppSrc *gstappsrc,
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GstBuffer *arg1,
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gpointer user_data)
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Flags: Action
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The “seek-data” signal
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gboolean
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user_function (GstAppSrc *gstappsrc,
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guint64 arg1,
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gpointer user_data)
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Flags: Run Last
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The “push-sample” signal
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GstFlowReturn
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user_function (GstAppSrc *gstappsrc,
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GstSample *arg1,
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gpointer user_data)
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Flags: Action
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The “push-buffer-list” signal
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GstFlowReturn
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user_function (GstAppSrc *gstappsrc,
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GstBufferList *arg1,
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gpointer user_data)
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Flags: Action
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