Audio::GstreamerDoublePipeline Class Reference

Class for gstreamer pipelines that need sources wired to downstream elements dynamically when autoplugging. More...

#include <gstreamplayer.h>

Inheritance diagram for Audio::GstreamerDoublePipeline:

Collaboration diagram for Audio::GstreamerDoublePipeline:

Public Member Functions
	GstreamerDoublePipeline ()=default
virtual	~GstreamerDoublePipeline ()=default
Public Member Functions inherited from Audio::GstreamerSimplePipeline
	GstreamerSimplePipeline ()
virtual	~GstreamerSimplePipeline ()

Protected Member Functions
void	push (GstElement *item)
	Push an output element into the filter graph. More...
void	pushSource (GstElement *item)
	Wire an element to the end of the source pipeline/filter graph. More...
Protected Member Functions inherited from Audio::GstreamerSimplePipeline
void	add (GstElement *element)
void	throwDeferredException (const GstreamerAudioException &exception, bool asynchronously=false) const
	"Throw" an exception from an asyncrhonous player thread. More...
void	throwAsyncException (const GstreamerAudioException &exception)
void	push (GstElement *item)
	Wire an item to the pipeline/filter graph. More...
GstElement *	createElement (const char *name, const std::string &overrides="")
	Create a gstreamer element and add it to the pipeline/bin, unwired. More...
GstState	currentPipelineState () const
	Query the pipeline's current state. More...
void	setPipelineState (GstState state)
	Set the pipeline's state. More...

Private Member Functions
void	connectOutput (GstPad *pad)
	Handle the pad added signal by connecting the decoder to the output chain. More...

Static Private Member Functions
static void	on_pad_added (GstElement *, GstPad *pad, gpointer instance)
	Callback function for pad-added signal. More...

Private Attributes
GstElement *	input_pipeline_last = nullptr
	Last item pushed on the stream. More...
gulong	signal_handler_id = 0

Additional Inherited Members
Protected Attributes inherited from Audio::GstreamerSimplePipeline
GstElement *	pipeline
	Filter graph for elements. More...
GstElement *	chain_start = nullptr
	First item pushed on the stream after setup. More...
GstElement *	pipeline_last = nullptr
	Last item pushed on the stream. More...
std::recursive_mutex	state_mutex
std::unique_ptr< GstreamerAudioException >	pipeline_exception
	Asynchronous exception. More...

Detailed Description

Class for gstreamer pipelines that need sources wired to downstream elements dynamically when autoplugging.

Constructor & Destructor Documentation

GstreamerDoublePipeline()

Audio::GstreamerDoublePipeline::GstreamerDoublePipeline ( )

default

~GstreamerDoublePipeline()

virtual Audio::GstreamerDoublePipeline::~GstreamerDoublePipeline ( )

virtualdefault

Member Function Documentation

connectOutput()

void Audio::GstreamerDoublePipeline::connectOutput ( GstPad *  pad )

private

Handle the pad added signal by connecting the decoder to the output chain.

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on_pad_added()

void Audio::GstreamerDoublePipeline::on_pad_added ( GstElement *  , GstPad *  pad, gpointer  instance  )

staticprivate

Callback function for pad-added signal.

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push()

void Audio::GstreamerDoublePipeline::push ( GstElement *  item )

protected

Push an output element into the filter graph.

The input elements are later wired to the output elements when the input elements trigger a pad-added signal, which is set up when the first output element is added.

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pushSource()

void Audio::GstreamerDoublePipeline::pushSource ( GstElement *  item )

protected

Wire an element to the end of the source pipeline/filter graph.

Items are wired in the order they are pushed.

Parameters

item	The item to insert into to the pipeline.

Exceptions

AudioException

if the item can't be linked.

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Member Data Documentation

input_pipeline_last

GstElement* Audio::GstreamerDoublePipeline::input_pipeline_last = nullptr

private

Last item pushed on the stream.

signal_handler_id

gulong Audio::GstreamerDoublePipeline::signal_handler_id = 0

private

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The documentation for this class was generated from the following files:

• mediaunits/audio/gstreamplayer.h
• mediaunits/audio/gstreamplayer.cpp