python.libgpac.libgpac.FilterSession Class Reference

filter session object - see GF_FilterSession

Public Member Functions
def	__init__ (self, flags=0, blacklist=None, nb_threads=0, sched_type=0)
	constructor for filter session - see gf_fs_new More...
def	delete (self)
	delete an existing filter session - see gf_fs_del More...
def	on_filter_new (self, _filter)
	called whenever a new filter is added, typically used by classes deriving from FilterSession More...
def	on_filter_del (self, _filter)
	called whenever a filter is destroyed, typically used by classes deriving from FilterSession More...
def	on_gl_activate (self, do_activate)
	called whenever a GL context must be activated, typically used by classes deriving from FilterSession More...
def	external_opengl_provider (self)
	call this function to prevent openGL context creation in libgpac, delegating GL context management to the calling app More...
def	run (self)
	run the session - see gf_fs_run More...
def	load_src (self, URL, parentURL=None)
	load source filter - see gf_fs_load_source More...
def	load_dst (self, URL, parentURL=None)
	load destination filter - see gf_fs_load_destination More...
def	load (self, fname)
	load a filter - see gf_fs_load_filter More...
def	post (self, task)
	post a user task to the filter sesison - see gf_fs_post_user_task More...
def	abort (self, flush=0)
	abort the session - see gf_fs_abort More...
def	get_filter (self, index)
	get a filter by index - see gf_fs_get_filter More...
def	lock (self, lock)
	lock the session - see gf_fs_lock_filters More...
def	reporting (self, do_report)
	enable status reporting by filters - see gf_fs_enable_reporting More...
def	print_stats (self)
	print statistics on stderr - see gf_fs_print_stats More...
def	print_graph (self)
	print graph on stderr - see gf_fs_print_connections More...
def	fire_event (self, evt, _filter=None, upstream=False)
	fire an event on the given filter if any, or on any filter accepting user events More...
def	is_supported_mime (self, mime)
	checks if a given mime is supported - see gf_fs_is_supported_mime More...
def	is_supported_source (self, url, parent=None)
	checks if a given source URL is supported - see gf_fs_is_supported_source More...

Data Fields
	last_task
	set to true if this is the last task running, readonly - see gf_fs_is_last_task
	nb_filters
	number of filters in session, readonly - see gf_fs_get_filters_count
	http_bitrate
	current HTTP cumulated download rate, readonly - see gf_fs_get_http_rate
	http_max_bitrate
	HTTP max download rate - see gf_fs_get_http_max_rate and gf_fs_set_http_max_rate.

Constructor & Destructor Documentation

__init__()

def python.libgpac.libgpac.FilterSession.__init__	(		self,
			flags = 0,
			blacklist = None,
			nb_threads = 0,
			sched_type = 0
	)

Parameters

flags	session flags (int)
blacklist	list of blacklisted filters
nb_threads	number of threads to use (int)
sched_type	session scheduler type

Member Function Documentation

delete()

def python.libgpac.libgpac.FilterSession.delete

(

self

)

Warning

The filter session must be explicitly destroyed if close (gf_sys_close) is called after that

Returns

on_filter_new()

def python.libgpac.libgpac.FilterSession.on_filter_new	(		self,
			_filter
	)

Parameters

_filter

Filter object being added

Returns

on_filter_del()

def python.libgpac.libgpac.FilterSession.on_filter_del	(		self,
			_filter
	)

Parameters

_filter

Filter object being removed

Returns

on_gl_activate()

def python.libgpac.libgpac.FilterSession.on_gl_activate	(		self,
			do_activate
	)

Parameters

do_activate

set to true if openGL context ust be activated for calling thread

Returns

external_opengl_provider()

def python.libgpac.libgpac.FilterSession.external_opengl_provider

(

self

)

Returns

run()

def python.libgpac.libgpac.FilterSession.run

(

self

)

Returns

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load_src()

def python.libgpac.libgpac.FilterSession.load_src	(		self,
			URL,
			parentURL = None
	)

Parameters

URL	source URL to load
parentURL	URL of parent resource for relative path resolution

Returns

new Filter object

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load_dst()

def python.libgpac.libgpac.FilterSession.load_dst	(		self,
			URL,
			parentURL = None
	)

Parameters

URL	source URL to load
parentURL	URL of parent resource for relative path resolution

Returns

new Filter object

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load()

def python.libgpac.libgpac.FilterSession.load	(		self,
			fname
	)

Parameters

fname

filter name and options

Returns

new Filter object

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post()

def python.libgpac.libgpac.FilterSession.post	(		self,
			task
	)

Parameters

task	task object to post

Returns

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abort()

def python.libgpac.libgpac.FilterSession.abort	(		self,
			flush = 0
	)

Parameters

flush

flush pipeline before abort

Returns

get_filter()

def python.libgpac.libgpac.FilterSession.get_filter	(		self,
			index
	)

Parameters

index

index of filter

Returns

Filter object

lock()

def python.libgpac.libgpac.FilterSession.lock	(		self,
			lock
	)

Parameters

lock	if True, locks otherwise unlocks

Returns

reporting()

def python.libgpac.libgpac.FilterSession.reporting	(		self,
			do_report
	)

Parameters

do_report

if True, enables reporting

Returns

print_stats()

def python.libgpac.libgpac.FilterSession.print_stats

(

self

)

Returns

print_graph()

def python.libgpac.libgpac.FilterSession.print_graph

(

self

)

Returns

fire_event()

def python.libgpac.libgpac.FilterSession.fire_event	(		self,
			evt,
			_filter = None,
			upstream = False
	)

Parameters

evt	FilterEvent to fire
_filter	Filter to use as target
upstream	if true, walks the chain towards the sink, otehrwise towards the source

Returns

is_supported_mime()

def python.libgpac.libgpac.FilterSession.is_supported_mime	(		self,
			mime
	)

Parameters

mime	mime type to check

Returns

true or false

is_supported_source()

def python.libgpac.libgpac.FilterSession.is_supported_source	(		self,
			url,
			parent = None
	)

Parameters

url	URL to check
parent	parent URL for relative URLs

Returns

true or false