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GstCheck-1.0.gir
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<?xml version="1.0"?>
<!-- This file was automatically generated from C sources - DO NOT EDIT!
To affect the contents of this file, edit the original C definitions,
and/or use gtk-doc annotations. -->
<repository xmlns="http://www.gtk.org/introspection/core/1.0" xmlns:c="http://www.gtk.org/introspection/c/1.0" xmlns:doc="http://www.gtk.org/introspection/doc/1.0" xmlns:glib="http://www.gtk.org/introspection/glib/1.0" version="1.2">
<include name="GLib" version="2.0"/>
<include name="GModule" version="2.0"/>
<include name="GObject" version="2.0"/>
<include name="Gst" version="1.0"/>
<package name="gstreamer-check-1.0"/>
<c:include name="gst/check/check.h"/>
<doc:format name="unknown"/>
<namespace name="GstCheck" version="1.0" shared-library="libgstcheck-1.0.so.0" c:identifier-prefixes="Gst" c:symbol-prefixes="gst">
<function-macro name="CHECK_DEPRECATED_FOR" c:identifier="GST_CHECK_DEPRECATED_FOR" introspectable="0">
<parameters>
<parameter name="f">
</parameter>
</parameters>
</function-macro>
<record name="Harness" c:type="GstHarness" version="1.6">
<doc xml:space="preserve">#GstHarness is meant to make writing unit test for GStreamer much easier.
It can be thought of as a way of treating a #GstElement as a black box,
deterministically feeding it data, and controlling what data it outputs.
The basic structure of #GstHarness is two "floating" #GstPads that connect
to the harnessed #GstElement src and sink #GstPads like so:
|[
__________________________
_____ | _____ _____ | _____
| | | | | | | | | |
| src |--+-| sink| Element | src |-+--| sink|
|_____| | |_____| |_____| | |_____|
|__________________________|
]|
With this, you can now simulate any environment the #GstElement might find
itself in. By specifying the #GstCaps of the harness #GstPads, using
functions like gst_harness_set_src_caps() or gst_harness_set_sink_caps_str(),
you can test how the #GstElement interacts with different caps sets.
Your harnessed #GstElement can of course also be a bin, and using
gst_harness_new_parse() supporting standard gst-launch syntax, you can
easily test a whole pipeline instead of just one element.
You can then go on to push #GstBuffers and #GstEvents on to the srcpad,
using functions like gst_harness_push() and gst_harness_push_event(), and
then pull them out to examine them with gst_harness_pull() and
gst_harness_pull_event().
## A simple buffer-in buffer-out example
|[<!-- language="C" -->
#include <gst/gst.h>
#include <gst/check/gstharness.h>
GstHarness *h;
GstBuffer *in_buf;
GstBuffer *out_buf;
// attach the harness to the src and sink pad of GstQueue
h = gst_harness_new ("queue");
// we must specify a caps before pushing buffers
gst_harness_set_src_caps_str (h, "mycaps");
// create a buffer of size 42
in_buf = gst_harness_create_buffer (h, 42);
// push the buffer into the queue
gst_harness_push (h, in_buf);
// pull the buffer from the queue
out_buf = gst_harness_pull (h);
// validate the buffer in is the same as buffer out
fail_unless (in_buf == out_buf);
// cleanup
gst_buffer_unref (out_buf);
gst_harness_teardown (h);
]|
Another main feature of the #GstHarness is its integration with the
#GstTestClock. Operating the #GstTestClock can be very challenging, but
#GstHarness simplifies some of the most desired actions a lot, like wanting
to manually advance the clock while at the same time releasing a #GstClockID
that is waiting, with functions like gst_harness_crank_single_clock_wait().
#GstHarness also supports sub-harnesses, as a way of generating and
validating data. A sub-harness is another #GstHarness that is managed by
the "parent" harness, and can either be created by using the standard
gst_harness_new type functions directly on the (GstHarness *)->src_harness,
or using the much more convenient gst_harness_add_src() or
gst_harness_add_sink_parse(). If you have a decoder-element you want to test,
(like vp8dec) it can be very useful to add a src-harness with both a
src-element (videotestsrc) and an encoder (vp8enc) to feed the decoder data
with different configurations, by simply doing:
|[<!-- language="C" -->
GstHarness * h = gst_harness_new ("vp8dec");
gst_harness_add_src_parse (h, "videotestsrc is-live=1 ! vp8enc", TRUE);
]|
and then feeding it data with:
|[<!-- language="C" -->
gst_harness_push_from_src (h);
]|</doc>
<field name="element" writable="1">
<doc xml:space="preserve">the element inside the harness</doc>
<type name="Gst.Element" c:type="GstElement*"/>
</field>
<field name="srcpad" writable="1">
<doc xml:space="preserve">the internal harness source pad</doc>
<type name="Gst.Pad" c:type="GstPad*"/>
</field>
<field name="sinkpad" writable="1">
<doc xml:space="preserve">the internal harness sink pad</doc>
<type name="Gst.Pad" c:type="GstPad*"/>
</field>
<field name="src_harness" writable="1">
<doc xml:space="preserve">the source (input) harness (if any)</doc>
<type name="Harness" c:type="GstHarness*"/>
</field>
<field name="sink_harness" writable="1">
<doc xml:space="preserve">the sink (output) harness (if any)</doc>
<type name="Harness" c:type="GstHarness*"/>
</field>
<field name="priv" readable="0" private="1">
<type name="HarnessPrivate" c:type="GstHarnessPrivate*"/>
</field>
<method name="add_element_full" c:identifier="gst_harness_add_element_full" version="1.6" introspectable="0">
<doc xml:space="preserve">Adds a #GstElement to an empty #GstHarness
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="element" transfer-ownership="none">
<doc xml:space="preserve">a #GstElement to add to the harness (transfer none)</doc>
<type name="Gst.Element" c:type="GstElement*"/>
</parameter>
<parameter name="hsrc" transfer-ownership="none" nullable="1" allow-none="1">
<doc xml:space="preserve">a #GstStaticPadTemplate describing the harness srcpad.
%NULL will not create a harness srcpad.</doc>
<type name="Gst.StaticPadTemplate" c:type="GstStaticPadTemplate*"/>
</parameter>
<parameter name="element_sinkpad_name" transfer-ownership="none" nullable="1" allow-none="1">
<doc xml:space="preserve">a #gchar with the name of the element
sinkpad that is then linked to the harness srcpad. Can be a static or request
or a sometimes pad that has been added. %NULL will not get/request a sinkpad
from the element. (Like if the element is a src.)</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="hsink" transfer-ownership="none" nullable="1" allow-none="1">
<doc xml:space="preserve">a #GstStaticPadTemplate describing the harness sinkpad.
%NULL will not create a harness sinkpad.</doc>
<type name="Gst.StaticPadTemplate" c:type="GstStaticPadTemplate*"/>
</parameter>
<parameter name="element_srcpad_name" transfer-ownership="none" nullable="1" allow-none="1">
<doc xml:space="preserve">a #gchar with the name of the element
srcpad that is then linked to the harness sinkpad, similar to the
@element_sinkpad_name.</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
</parameters>
</method>
<method name="add_element_sink_pad" c:identifier="gst_harness_add_element_sink_pad" version="1.6">
<doc xml:space="preserve">Links the specified #GstPad the @GstHarness srcpad.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="sinkpad" transfer-ownership="none">
<doc xml:space="preserve">a #GstPad to link to the harness srcpad</doc>
<type name="Gst.Pad" c:type="GstPad*"/>
</parameter>
</parameters>
</method>
<method name="add_element_src_pad" c:identifier="gst_harness_add_element_src_pad" version="1.6">
<doc xml:space="preserve">Links the specified #GstPad the @GstHarness sinkpad. This can be useful if
perhaps the srcpad did not exist at the time of creating the harness,
like a demuxer that provides a sometimes-pad after receiving data.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="srcpad" transfer-ownership="none">
<doc xml:space="preserve">a #GstPad to link to the harness sinkpad</doc>
<type name="Gst.Pad" c:type="GstPad*"/>
</parameter>
</parameters>
</method>
<method name="add_parse" c:identifier="gst_harness_add_parse" version="1.6" introspectable="0">
<doc xml:space="preserve">Parses the @launchline and puts that in a #GstBin,
and then attches the supplied #GstHarness to the bin.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="launchline" transfer-ownership="none">
<doc xml:space="preserve">a #gchar describing a gst-launch type line</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
</parameters>
</method>
<method name="add_probe" c:identifier="gst_harness_add_probe" version="1.6">
<doc xml:space="preserve">A convenience function to allows you to call gst_pad_add_probe on a
#GstPad of a #GstElement that are residing inside the #GstHarness,
by using normal gst_pad_add_probe syntax
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="element_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with a #GstElementFactory name</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="pad_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with the name of the pad to attach the probe to</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="mask" transfer-ownership="none">
<doc xml:space="preserve">a #GstPadProbeType (see gst_pad_add_probe)</doc>
<type name="Gst.PadProbeType" c:type="GstPadProbeType"/>
</parameter>
<parameter name="callback" transfer-ownership="none" scope="notified" closure="4" destroy="5">
<doc xml:space="preserve">a #GstPadProbeCallback (see gst_pad_add_probe)</doc>
<type name="Gst.PadProbeCallback" c:type="GstPadProbeCallback"/>
</parameter>
<parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1">
<doc xml:space="preserve">a #gpointer (see gst_pad_add_probe)</doc>
<type name="gpointer" c:type="gpointer"/>
</parameter>
<parameter name="destroy_data" transfer-ownership="none" scope="async">
<doc xml:space="preserve">a #GDestroyNotify (see gst_pad_add_probe)</doc>
<type name="GLib.DestroyNotify" c:type="GDestroyNotify"/>
</parameter>
</parameters>
</method>
<method name="add_propose_allocation_meta" c:identifier="gst_harness_add_propose_allocation_meta" version="1.16">
<doc xml:space="preserve">Add api with params as one of the supported metadata API to propose when
receiving an allocation query.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="api" transfer-ownership="none">
<doc xml:space="preserve">a metadata API</doc>
<type name="GType" c:type="GType"/>
</parameter>
<parameter name="params" transfer-ownership="none" nullable="1" allow-none="1">
<doc xml:space="preserve">API specific parameters</doc>
<type name="Gst.Structure" c:type="const GstStructure*"/>
</parameter>
</parameters>
</method>
<method name="add_sink" c:identifier="gst_harness_add_sink" version="1.6">
<doc xml:space="preserve">Similar to gst_harness_add_sink_harness, this is a convenience to
directly create a sink-harness using the @sink_element_name name specified.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="sink_element_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with the name of a #GstElement</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
</parameters>
</method>
<method name="add_sink_harness" c:identifier="gst_harness_add_sink_harness" version="1.6">
<doc xml:space="preserve">Similar to gst_harness_add_src, this allows you to send the data coming out
of your harnessed #GstElement to a sink-element, allowing to test different
responses the element output might create in sink elements. An example might
be an existing sink providing some analytical data on the input it receives that
can be useful to your testing. If the goal is to test a sink-element itself,
this is better achieved using gst_harness_new directly on the sink.
If a sink-harness already exists it will be replaced.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="sink_harness" transfer-ownership="full">
<doc xml:space="preserve">a #GstHarness to be added as a sink-harness.</doc>
<type name="Harness" c:type="GstHarness*"/>
</parameter>
</parameters>
</method>
<method name="add_sink_parse" c:identifier="gst_harness_add_sink_parse" version="1.6">
<doc xml:space="preserve">Similar to gst_harness_add_sink, this allows you to specify a launch-line
instead of just an element name. See gst_harness_add_src_parse for details.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="launchline" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with the name of a #GstElement</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
</parameters>
</method>
<method name="add_src" c:identifier="gst_harness_add_src" version="1.6">
<doc xml:space="preserve">Similar to gst_harness_add_src_harness, this is a convenience to
directly create a src-harness using the @src_element_name name specified.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="src_element_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with the name of a #GstElement</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="has_clock_wait" transfer-ownership="none">
<doc xml:space="preserve">a #gboolean specifying if the #GstElement uses
gst_clock_wait_id internally.</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</method>
<method name="add_src_harness" c:identifier="gst_harness_add_src_harness" version="1.6">
<doc xml:space="preserve">A src-harness is a great way of providing the #GstHarness with data.
By adding a src-type #GstElement, it is then easy to use functions like
gst_harness_push_from_src or gst_harness_src_crank_and_push_many
to provide your harnessed element with input. The @has_clock_wait variable
is a great way to control you src-element with, in that you can have it
produce a buffer for you by simply cranking the clock, and not have it
spin out of control producing buffers as fast as possible.
If a src-harness already exists it will be replaced.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="src_harness" transfer-ownership="full">
<doc xml:space="preserve">a #GstHarness to be added as a src-harness.</doc>
<type name="Harness" c:type="GstHarness*"/>
</parameter>
<parameter name="has_clock_wait" transfer-ownership="none">
<doc xml:space="preserve">a #gboolean specifying if the #GstElement uses
gst_clock_wait_id internally.</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</method>
<method name="add_src_parse" c:identifier="gst_harness_add_src_parse" version="1.6">
<doc xml:space="preserve">Similar to gst_harness_add_src, this allows you to specify a launch-line,
which can be useful for both having more then one #GstElement acting as your
src (Like a src producing raw buffers, and then an encoder, providing encoded
data), but also by allowing you to set properties like "is-live" directly on
the elements.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="launchline" transfer-ownership="none">
<doc xml:space="preserve">a #gchar describing a gst-launch type line</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="has_clock_wait" transfer-ownership="none">
<doc xml:space="preserve">a #gboolean specifying if the #GstElement uses
gst_clock_wait_id internally.</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</method>
<method name="buffers_in_queue" c:identifier="gst_harness_buffers_in_queue" version="1.6">
<doc xml:space="preserve">The number of #GstBuffers currently in the #GstHarness sinkpad #GAsyncQueue
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #guint number of buffers in the queue</doc>
<type name="guint" c:type="guint"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="buffers_received" c:identifier="gst_harness_buffers_received" version="1.6">
<doc xml:space="preserve">The total number of #GstBuffers that has arrived on the #GstHarness sinkpad.
This number includes buffers that have been dropped as well as buffers
that have already been pulled out.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #guint number of buffers received</doc>
<type name="guint" c:type="guint"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="crank_multiple_clock_waits" c:identifier="gst_harness_crank_multiple_clock_waits" version="1.6">
<doc xml:space="preserve">Similar to gst_harness_crank_single_clock_wait(), this is the function to use
if your harnessed element(s) are using more then one gst_clock_id_wait.
Failing to do so can (and will) make it racy which #GstClockID you actually
are releasing, where as this function will process all the waits at the
same time, ensuring that one thread can't register another wait before
both are released.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a @gboolean %TRUE if the "crank" was successful, %FALSE if not.</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="waits" transfer-ownership="none">
<doc xml:space="preserve">a #guint describing the number of #GstClockIDs to crank</doc>
<type name="guint" c:type="guint"/>
</parameter>
</parameters>
</method>
<method name="crank_single_clock_wait" c:identifier="gst_harness_crank_single_clock_wait" version="1.6">
<doc xml:space="preserve">A "crank" consists of three steps:
1: Wait for a #GstClockID to be registered with the #GstTestClock.
2: Advance the #GstTestClock to the time the #GstClockID is waiting for.
3: Release the #GstClockID wait.
Together, this provides an easy way to not have to think about the details
around clocks and time, but still being able to write deterministic tests
that are dependent on this. A "crank" can be though of as the notion of
manually driving the clock forward to its next logical step.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a @gboolean %TRUE if the "crank" was successful, %FALSE if not.</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="create_buffer" c:identifier="gst_harness_create_buffer" version="1.6">
<doc xml:space="preserve">Allocates a buffer using a #GstBufferPool if present, or else using the
configured #GstAllocator and #GstAllocationParams
MT safe.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a #GstBuffer of size @size</doc>
<type name="Gst.Buffer" c:type="GstBuffer*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="size" transfer-ownership="none">
<doc xml:space="preserve">a #gsize specifying the size of the buffer</doc>
<type name="gsize" c:type="gsize"/>
</parameter>
</parameters>
</method>
<method name="dump_to_file" c:identifier="gst_harness_dump_to_file" version="1.6">
<doc xml:space="preserve">Allows you to dump the #GstBuffers the #GstHarness sinkpad #GAsyncQueue
to a file.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="filename" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with a the name of a file</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
</parameters>
</method>
<method name="events_in_queue" c:identifier="gst_harness_events_in_queue" version="1.6">
<doc xml:space="preserve">The number of #GstEvents currently in the #GstHarness sinkpad #GAsyncQueue
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #guint number of events in the queue</doc>
<type name="guint" c:type="guint"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="events_received" c:identifier="gst_harness_events_received" version="1.6">
<doc xml:space="preserve">The total number of #GstEvents that has arrived on the #GstHarness sinkpad
This number includes events handled by the harness as well as events
that have already been pulled out.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #guint number of events received</doc>
<type name="guint" c:type="guint"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="find_element" c:identifier="gst_harness_find_element" version="1.6">
<doc xml:space="preserve">Most useful in conjunction with gst_harness_new_parse, this will scan the
#GstElements inside the #GstHarness, and check if any of them matches
@element_name. Typical usecase being that you need to access one of the
harnessed elements for properties and/or signals.
MT safe.</doc>
<return-value transfer-ownership="full" nullable="1">
<doc xml:space="preserve">a #GstElement or %NULL if not found</doc>
<type name="Gst.Element" c:type="GstElement*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="element_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with a #GstElementFactory name</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
</parameters>
</method>
<method name="get" c:identifier="gst_harness_get" version="1.6" introspectable="0">
<doc xml:space="preserve">A convenience function to allows you to call g_object_get on a #GstElement
that are residing inside the #GstHarness, by using normal g_object_get
syntax.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="element_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with a #GstElementFactory name</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="first_property_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with the first property name</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="..." transfer-ownership="none">
<doc xml:space="preserve">return location for the first property, followed optionally by more
name/return location pairs, followed by %NULL</doc>
<varargs/>
</parameter>
</parameters>
</method>
<method name="get_allocator" c:identifier="gst_harness_get_allocator" version="1.6">
<doc xml:space="preserve">Gets the @allocator and its @params that has been decided to use after an
allocation query.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="allocator" direction="out" caller-allocates="0" transfer-ownership="none" nullable="1" optional="1" allow-none="1">
<doc xml:space="preserve">the #GstAllocator used</doc>
<type name="Gst.Allocator" c:type="GstAllocator**"/>
</parameter>
<parameter name="params" direction="out" caller-allocates="1" transfer-ownership="none" optional="1" allow-none="1">
<doc xml:space="preserve">the #GstAllocationParams of
@allocator</doc>
<type name="Gst.AllocationParams" c:type="GstAllocationParams*"/>
</parameter>
</parameters>
</method>
<method name="get_last_pushed_timestamp" c:identifier="gst_harness_get_last_pushed_timestamp" version="1.6">
<doc xml:space="preserve">Get the timestamp of the last #GstBuffer pushed on the #GstHarness srcpad,
typically with gst_harness_push or gst_harness_push_from_src.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #GstClockTime with the timestamp or %GST_CLOCK_TIME_NONE if no
#GstBuffer has been pushed on the #GstHarness srcpad</doc>
<type name="Gst.ClockTime" c:type="GstClockTime"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="get_testclock" c:identifier="gst_harness_get_testclock" version="1.6">
<doc xml:space="preserve">Get the #GstTestClock. Useful if specific operations on the testclock is
needed.
MT safe.</doc>
<return-value transfer-ownership="full" nullable="1">
<doc xml:space="preserve">a #GstTestClock, or %NULL if the testclock is not
present.</doc>
<type name="TestClock" c:type="GstTestClock*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="play" c:identifier="gst_harness_play" version="1.6">
<doc xml:space="preserve">This will set the harnessed #GstElement to %GST_STATE_PLAYING.
#GstElements without a sink-#GstPad and with the %GST_ELEMENT_FLAG_SOURCE
flag set is considered a src #GstElement
Non-src #GstElements (like sinks and filters) are automatically set to
playing by the #GstHarness, but src #GstElements are not to avoid them
starting to produce buffers.
Hence, for src #GstElement you must call gst_harness_play() explicitly.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="pull" c:identifier="gst_harness_pull" version="1.6">
<doc xml:space="preserve">Pulls a #GstBuffer from the #GAsyncQueue on the #GstHarness sinkpad. The pull
will timeout in 60 seconds. This is the standard way of getting a buffer
from a harnessed #GstElement.
MT safe.</doc>
<return-value transfer-ownership="full" nullable="1">
<doc xml:space="preserve">a #GstBuffer or %NULL if timed out.</doc>
<type name="Gst.Buffer" c:type="GstBuffer*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="pull_event" c:identifier="gst_harness_pull_event" version="1.6">
<doc xml:space="preserve">Pulls an #GstEvent from the #GAsyncQueue on the #GstHarness sinkpad.
Timeouts after 60 seconds similar to gst_harness_pull.
MT safe.</doc>
<return-value transfer-ownership="full" nullable="1">
<doc xml:space="preserve">a #GstEvent or %NULL if timed out.</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="pull_until_eos" c:identifier="gst_harness_pull_until_eos" version="1.18">
<doc xml:space="preserve">Pulls a #GstBuffer from the #GAsyncQueue on the #GstHarness sinkpad. The pull
will block until an EOS event is received, or timeout in 60 seconds.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">%TRUE on success, %FALSE on timeout.</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="buf" direction="out" caller-allocates="0" transfer-ownership="full" nullable="1">
<doc xml:space="preserve">A #GstBuffer, or %NULL if EOS or timeout occures
first.</doc>
<type name="Gst.Buffer" c:type="GstBuffer**"/>
</parameter>
</parameters>
</method>
<method name="pull_upstream_event" c:identifier="gst_harness_pull_upstream_event" version="1.6">
<doc xml:space="preserve">Pulls an #GstEvent from the #GAsyncQueue on the #GstHarness srcpad.
Timeouts after 60 seconds similar to gst_harness_pull.
MT safe.</doc>
<return-value transfer-ownership="full" nullable="1">
<doc xml:space="preserve">a #GstEvent or %NULL if timed out.</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="push" c:identifier="gst_harness_push" version="1.6">
<doc xml:space="preserve">Pushes a #GstBuffer on the #GstHarness srcpad. The standard way of
interacting with an harnessed element.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #GstFlowReturn with the result from the push</doc>
<type name="Gst.FlowReturn" c:type="GstFlowReturn"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="buffer" transfer-ownership="full">
<doc xml:space="preserve">a #GstBuffer to push</doc>
<type name="Gst.Buffer" c:type="GstBuffer*"/>
</parameter>
</parameters>
</method>
<method name="push_and_pull" c:identifier="gst_harness_push_and_pull" version="1.6">
<doc xml:space="preserve">Basically a gst_harness_push and a gst_harness_pull in one line. Reflects
the fact that you often want to do exactly this in your test: Push one buffer
in, and inspect the outcome.
MT safe.</doc>
<return-value transfer-ownership="full" nullable="1">
<doc xml:space="preserve">a #GstBuffer or %NULL if timed out.</doc>
<type name="Gst.Buffer" c:type="GstBuffer*"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="buffer" transfer-ownership="full">
<doc xml:space="preserve">a #GstBuffer to push</doc>
<type name="Gst.Buffer" c:type="GstBuffer*"/>
</parameter>
</parameters>
</method>
<method name="push_event" c:identifier="gst_harness_push_event" version="1.6">
<doc xml:space="preserve">Pushes an #GstEvent on the #GstHarness srcpad.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #gboolean with the result from the push</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="event" transfer-ownership="full">
<doc xml:space="preserve">a #GstEvent to push</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</parameter>
</parameters>
</method>
<method name="push_from_src" c:identifier="gst_harness_push_from_src" version="1.6">
<doc xml:space="preserve">Transfer data from the src-#GstHarness to the main-#GstHarness. It consists
of 4 steps:
1: Make sure the src is started. (see: gst_harness_play)
2: Crank the clock (see: gst_harness_crank_single_clock_wait)
3: Pull a #GstBuffer from the src-#GstHarness (see: gst_harness_pull)
4: Push the same #GstBuffer into the main-#GstHarness (see: gst_harness_push)
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #GstFlowReturn with the result of the push</doc>
<type name="Gst.FlowReturn" c:type="GstFlowReturn"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="push_to_sink" c:identifier="gst_harness_push_to_sink" version="1.6">
<doc xml:space="preserve">Transfer one #GstBuffer from the main-#GstHarness to the sink-#GstHarness.
See gst_harness_push_from_src for details.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #GstFlowReturn with the result of the push</doc>
<type name="Gst.FlowReturn" c:type="GstFlowReturn"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="push_upstream_event" c:identifier="gst_harness_push_upstream_event" version="1.6">
<doc xml:space="preserve">Pushes an #GstEvent on the #GstHarness sinkpad.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #gboolean with the result from the push</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="event" transfer-ownership="full">
<doc xml:space="preserve">a #GstEvent to push</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</parameter>
</parameters>
</method>
<method name="query_latency" c:identifier="gst_harness_query_latency" version="1.6">
<doc xml:space="preserve">Get the min latency reported by any harnessed #GstElement.
MT safe.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">a #GstClockTime with min latency</doc>
<type name="Gst.ClockTime" c:type="GstClockTime"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="set" c:identifier="gst_harness_set" version="1.6" introspectable="0">
<doc xml:space="preserve">A convenience function to allows you to call g_object_set on a #GstElement
that are residing inside the #GstHarness, by using normal g_object_set
syntax.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="element_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with a #GstElementFactory name</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="first_property_name" transfer-ownership="none">
<doc xml:space="preserve">a #gchar with the first property name</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="..." transfer-ownership="none">
<doc xml:space="preserve">value for the first property, followed optionally by more
name/value pairs, followed by %NULL</doc>
<varargs/>
</parameter>
</parameters>
</method>
<method name="set_blocking_push_mode" c:identifier="gst_harness_set_blocking_push_mode" version="1.6">
<doc xml:space="preserve">Setting this will make the harness block in the chain-function, and
then release when gst_harness_pull() or gst_harness_try_pull() is called.
Can be useful when wanting to control a src-element that is not implementing
gst_clock_id_wait() so it can't be controlled by the #GstTestClock, since
it otherwise would produce buffers as fast as possible.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
</parameters>
</method>
<method name="set_caps" c:identifier="gst_harness_set_caps" version="1.6">
<doc xml:space="preserve">Sets the @GstHarness srcpad and sinkpad caps.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="in" transfer-ownership="full">
<doc xml:space="preserve">a #GstCaps to set on the harness srcpad</doc>
<type name="Gst.Caps" c:type="GstCaps*"/>
</parameter>
<parameter name="out" transfer-ownership="full">
<doc xml:space="preserve">a #GstCaps to set on the harness sinkpad</doc>
<type name="Gst.Caps" c:type="GstCaps*"/>
</parameter>
</parameters>
</method>
<method name="set_caps_str" c:identifier="gst_harness_set_caps_str" version="1.6">
<doc xml:space="preserve">Sets the @GstHarness srcpad and sinkpad caps using strings.
MT safe.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="h" transfer-ownership="none">
<doc xml:space="preserve">a #GstHarness</doc>
<type name="Harness" c:type="GstHarness*"/>
</instance-parameter>
<parameter name="in" transfer-ownership="none">
<doc xml:space="preserve">a @gchar describing a #GstCaps to set on the harness srcpad</doc>
<type name="utf8" c:type="const gchar*"/>