mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-19 08:11:16 +00:00
60afc6cc95
In order to use keyword argument, the names shoudl match the documentation. Both arguments name was changed in the override. Fixes: #2779 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4982>
846 lines
21 KiB
Python
846 lines
21 KiB
Python
# -*- Mode: Python; py-indent-offset: 4 -*-
|
|
# vim: tabstop=4 shiftwidth=4 expandtab
|
|
#
|
|
# Gst.py
|
|
#
|
|
# Copyright (C) 2012 Thibault Saunier <thibault.saunier@collabora.com>
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this program; if not, write to the
|
|
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
# Boston, MA 02110-1301, USA.
|
|
#
|
|
# SPDX-License-Identifier: LGPL-2.0-or-later
|
|
|
|
import sys
|
|
import inspect
|
|
import itertools
|
|
import weakref
|
|
from ..overrides import override
|
|
from ..module import get_introspection_module
|
|
|
|
from gi.repository import GLib
|
|
|
|
|
|
Gst = get_introspection_module('Gst')
|
|
|
|
__all__ = []
|
|
|
|
if Gst._version == '0.10':
|
|
import warnings
|
|
warn_msg = "You have imported the Gst 0.10 module. Because Gst 0.10 \
|
|
was not designed for use with introspection some of the \
|
|
interfaces and API will fail. As such this is not supported \
|
|
by the GStreamer development team and we encourage you to \
|
|
port your app to Gst 1 or greater. gst-python is the recommended \
|
|
python module to use with Gst 0.10"
|
|
|
|
warnings.warn(warn_msg, RuntimeWarning)
|
|
|
|
|
|
# Ensuring that PyGObject loads the URIHandler interface
|
|
# so we can force our own implementation soon enough (in gstmodule.c)
|
|
class URIHandler(Gst.URIHandler):
|
|
pass
|
|
|
|
|
|
URIHandler = override(URIHandler)
|
|
__all__.append('URIHandler')
|
|
|
|
|
|
class Element(Gst.Element):
|
|
@staticmethod
|
|
def link_many(*args):
|
|
'''
|
|
@raises: Gst.LinkError
|
|
'''
|
|
for pair in pairwise(args):
|
|
if not pair[0].link(pair[1]):
|
|
raise LinkError(
|
|
'Failed to link {} and {}'.format(pair[0], pair[1]))
|
|
|
|
|
|
Element = override(Element)
|
|
__all__.append('Element')
|
|
|
|
|
|
class Bin(Gst.Bin):
|
|
def __init__(self, name=None):
|
|
Gst.Bin.__init__(self, name=name)
|
|
|
|
def add(self, *args):
|
|
for arg in args:
|
|
if not Gst.Bin.add(self, arg):
|
|
raise AddError(arg)
|
|
|
|
def make_and_add(self, factoryname, name=None):
|
|
'''
|
|
@raises: Gst.AddError
|
|
'''
|
|
elem = Gst.ElementFactory.make(factoryname, name)
|
|
if not elem:
|
|
raise AddError(
|
|
'No such element: {}'.format(factoryname))
|
|
self.add(elem)
|
|
return elem
|
|
|
|
|
|
Bin = override(Bin)
|
|
__all__.append('Bin')
|
|
|
|
|
|
class Caps(Gst.Caps):
|
|
|
|
def __nonzero__(self):
|
|
return not self.is_empty()
|
|
|
|
def __new__(cls, *args):
|
|
if not args:
|
|
return Caps.new_empty()
|
|
elif len(args) > 1:
|
|
raise TypeError("wrong arguments when creating GstCaps object")
|
|
elif isinstance(args[0], str):
|
|
return Caps.from_string(args[0])
|
|
elif isinstance(args[0], Caps):
|
|
return args[0].copy()
|
|
elif isinstance(args[0], Structure):
|
|
res = Caps.new_empty()
|
|
res.append_structure(args[0])
|
|
return res
|
|
elif isinstance(args[0], (list, tuple)):
|
|
res = Caps.new_empty()
|
|
for e in args[0]:
|
|
res.append_structure(e)
|
|
return res
|
|
|
|
raise TypeError("wrong arguments when creating GstCaps object")
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
return super(Caps, self).__init__()
|
|
|
|
def __str__(self):
|
|
return self.to_string()
|
|
|
|
def __getitem__(self, index):
|
|
if index >= self.get_size():
|
|
raise IndexError('structure index out of range')
|
|
return self.get_structure(index)
|
|
|
|
def __len__(self):
|
|
return self.get_size()
|
|
|
|
|
|
Caps = override(Caps)
|
|
__all__.append('Caps')
|
|
|
|
|
|
class PadFunc:
|
|
def __init__(self, func):
|
|
self.func = func
|
|
|
|
def __call__(self, pad, parent, obj):
|
|
if isinstance(self.func, weakref.WeakMethod):
|
|
func = self.func()
|
|
else:
|
|
func = self.func
|
|
|
|
try:
|
|
res = func(pad, obj)
|
|
except TypeError:
|
|
try:
|
|
res = func(pad, parent, obj)
|
|
except TypeError:
|
|
raise TypeError("Invalid method %s, 2 or 3 arguments required"
|
|
% func)
|
|
|
|
return res
|
|
|
|
|
|
class Pad(Gst.Pad):
|
|
def __init__(self, *args, **kwargs):
|
|
super(Gst.Pad, self).__init__(*args, **kwargs)
|
|
|
|
def set_chain_function(self, func):
|
|
self.set_chain_function_full(PadFunc(func), None)
|
|
|
|
def set_event_function(self, func):
|
|
self.set_event_function_full(PadFunc(func), None)
|
|
|
|
def set_query_function(self, func):
|
|
self.set_query_function_full(PadFunc(func), None)
|
|
|
|
def query_caps(self, filter=None):
|
|
return Gst.Pad.query_caps(self, filter)
|
|
|
|
def set_caps(self, caps):
|
|
if not isinstance(caps, Gst.Caps):
|
|
raise TypeError("%s is not a Gst.Caps." % (type(caps)))
|
|
|
|
if not caps.is_fixed():
|
|
return False
|
|
|
|
event = Gst.Event.new_caps(caps)
|
|
|
|
if self.direction == Gst.PadDirection.SRC:
|
|
res = self.push_event(event)
|
|
else:
|
|
res = self.send_event(event)
|
|
|
|
return res
|
|
|
|
def link(self, pad):
|
|
ret = Gst.Pad.link(self, pad)
|
|
if ret != Gst.PadLinkReturn.OK:
|
|
raise LinkError(ret)
|
|
return ret
|
|
|
|
|
|
Pad = override(Pad)
|
|
__all__.append('Pad')
|
|
|
|
|
|
class GhostPad(Gst.GhostPad):
|
|
def __init__(self, name, target=None, direction=None):
|
|
if direction is None:
|
|
if target is None:
|
|
raise TypeError('you must pass at least one of target '
|
|
'and direction')
|
|
direction = target.props.direction
|
|
|
|
Gst.GhostPad.__init__(self, name=name, direction=direction)
|
|
self.construct()
|
|
if target is not None:
|
|
self.set_target(target)
|
|
|
|
def query_caps(self, filter=None):
|
|
return Gst.GhostPad.query_caps(self, filter)
|
|
|
|
|
|
GhostPad = override(GhostPad)
|
|
__all__.append('GhostPad')
|
|
|
|
|
|
class IteratorError(Exception):
|
|
pass
|
|
|
|
|
|
__all__.append('IteratorError')
|
|
|
|
|
|
class AddError(Exception):
|
|
pass
|
|
|
|
|
|
__all__.append('AddError')
|
|
|
|
|
|
class LinkError(Exception):
|
|
pass
|
|
|
|
|
|
__all__.append('LinkError')
|
|
|
|
|
|
class MapError(Exception):
|
|
pass
|
|
|
|
|
|
__all__.append('MapError')
|
|
|
|
|
|
class Iterator(Gst.Iterator):
|
|
def __iter__(self):
|
|
while True:
|
|
result, value = self.next()
|
|
if result == Gst.IteratorResult.DONE:
|
|
break
|
|
|
|
if result != Gst.IteratorResult.OK:
|
|
raise IteratorError(result)
|
|
|
|
yield value
|
|
|
|
|
|
Iterator = override(Iterator)
|
|
__all__.append('Iterator')
|
|
|
|
|
|
class ElementFactory(Gst.ElementFactory):
|
|
|
|
# ElementFactory
|
|
def get_longname(self):
|
|
return self.get_metadata("long-name")
|
|
|
|
def get_description(self):
|
|
return self.get_metadata("description")
|
|
|
|
def get_klass(self):
|
|
return self.get_metadata("klass")
|
|
|
|
@classmethod
|
|
def make(cls, factoryname, name=None):
|
|
return Gst.ElementFactory.make(factoryname, name)
|
|
|
|
|
|
class Pipeline(Gst.Pipeline):
|
|
def __init__(self, name=None):
|
|
Gst.Pipeline.__init__(self, name=name)
|
|
|
|
|
|
Pipeline = override(Pipeline)
|
|
__all__.append('Pipeline')
|
|
|
|
|
|
class Structure(Gst.Structure):
|
|
def __new__(cls, *args, **kwargs):
|
|
if not args:
|
|
if kwargs:
|
|
raise TypeError("wrong arguments when creating GstStructure, first argument"
|
|
" must be the structure name.")
|
|
return Structure.new_empty()
|
|
elif len(args) > 1:
|
|
raise TypeError("wrong arguments when creating GstStructure object")
|
|
elif isinstance(args[0], str):
|
|
if not kwargs:
|
|
return Structure.from_string(args[0])[0]
|
|
struct = Structure.new_empty(args[0])
|
|
for k, v in kwargs.items():
|
|
struct[k] = v
|
|
|
|
return struct
|
|
elif isinstance(args[0], Structure):
|
|
return args[0].copy()
|
|
|
|
raise TypeError("wrong arguments when creating GstStructure object")
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
pass
|
|
|
|
def __getitem__(self, key):
|
|
return self.get_value(key)
|
|
|
|
def keys(self):
|
|
keys = set()
|
|
|
|
def foreach(fid, value, unused1, udata):
|
|
keys.add(GLib.quark_to_string(fid))
|
|
return True
|
|
|
|
self.foreach(foreach, None, None)
|
|
return keys
|
|
|
|
def __setitem__(self, key, value):
|
|
return self.set_value(key, value)
|
|
|
|
def __str__(self):
|
|
return self.to_string()
|
|
|
|
|
|
Structure = override(Structure)
|
|
__all__.append('Structure')
|
|
|
|
ElementFactory = override(ElementFactory)
|
|
__all__.append('ElementFactory')
|
|
|
|
|
|
class Fraction(Gst.Fraction):
|
|
def __init__(self, num, denom=1):
|
|
def __gcd(a, b):
|
|
while b != 0:
|
|
tmp = a
|
|
a = b
|
|
b = tmp % b
|
|
return abs(a)
|
|
|
|
def __simplify():
|
|
num = self.num
|
|
denom = self.denom
|
|
|
|
if num < 0:
|
|
num = -num
|
|
denom = -denom
|
|
|
|
# Compute greatest common divisor
|
|
gcd = __gcd(num, denom)
|
|
if gcd != 0:
|
|
num /= gcd
|
|
denom /= gcd
|
|
|
|
self.num = num
|
|
self.denom = denom
|
|
|
|
self.num = num
|
|
self.denom = denom
|
|
|
|
__simplify()
|
|
self.type = "fraction"
|
|
|
|
def __repr__(self):
|
|
return '<Gst.Fraction %s>' % (str(self))
|
|
|
|
def __value__(self):
|
|
return self.num / self.denom
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, Fraction):
|
|
return self.num * other.denom == other.num * self.denom
|
|
return False
|
|
|
|
def __ne__(self, other):
|
|
return not self.__eq__(other)
|
|
|
|
def __mul__(self, other):
|
|
if isinstance(other, Fraction):
|
|
return Fraction(self.num * other.num,
|
|
self.denom * other.denom)
|
|
elif isinstance(other, int):
|
|
return Fraction(self.num * other, self.denom)
|
|
raise TypeError("%s is not supported, use Gst.Fraction or int." %
|
|
(type(other)))
|
|
|
|
__rmul__ = __mul__
|
|
|
|
def __truediv__(self, other):
|
|
if isinstance(other, Fraction):
|
|
return Fraction(self.num * other.denom,
|
|
self.denom * other.num)
|
|
elif isinstance(other, int):
|
|
return Fraction(self.num, self.denom * other)
|
|
return TypeError("%s is not supported, use Gst.Fraction or int." %
|
|
(type(other)))
|
|
|
|
__div__ = __truediv__
|
|
|
|
def __rtruediv__(self, other):
|
|
if isinstance(other, int):
|
|
return Fraction(self.denom * other, self.num)
|
|
return TypeError("%s is not an int." % (type(other)))
|
|
|
|
__rdiv__ = __rtruediv__
|
|
|
|
def __float__(self):
|
|
return float(self.num) / float(self.denom)
|
|
|
|
def __str__(self):
|
|
return '%d/%d' % (self.num, self.denom)
|
|
|
|
|
|
Fraction = override(Fraction)
|
|
__all__.append('Fraction')
|
|
|
|
|
|
class IntRange(Gst.IntRange):
|
|
def __init__(self, r):
|
|
if not isinstance(r, range):
|
|
raise TypeError("%s is not a range." % (type(r)))
|
|
|
|
if (r.start >= r.stop):
|
|
raise TypeError("Range start must be smaller then stop")
|
|
|
|
if r.start % r.step != 0:
|
|
raise TypeError("Range start must be a multiple of the step")
|
|
|
|
if r.stop % r.step != 0:
|
|
raise TypeError("Range stop must be a multiple of the step")
|
|
|
|
self.range = r
|
|
|
|
def __repr__(self):
|
|
return '<Gst.IntRange [%d,%d,%d]>' % (self.range.start,
|
|
self.range.stop, self.range.step)
|
|
|
|
def __str__(self):
|
|
if self.range.step == 1:
|
|
return '[%d,%d]' % (self.range.start, self.range.stop)
|
|
else:
|
|
return '[%d,%d,%d]' % (self.range.start, self.range.stop,
|
|
self.range.step)
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, range):
|
|
return self.range == other
|
|
elif isinstance(other, IntRange):
|
|
return self.range == other.range
|
|
return False
|
|
|
|
|
|
if sys.version_info >= (3, 0):
|
|
IntRange = override(IntRange)
|
|
__all__.append('IntRange')
|
|
|
|
|
|
class Int64Range(Gst.Int64Range):
|
|
def __init__(self, r):
|
|
if not isinstance(r, range):
|
|
raise TypeError("%s is not a range." % (type(r)))
|
|
|
|
if (r.start >= r.stop):
|
|
raise TypeError("Range start must be smaller then stop")
|
|
|
|
if r.start % r.step != 0:
|
|
raise TypeError("Range start must be a multiple of the step")
|
|
|
|
if r.stop % r.step != 0:
|
|
raise TypeError("Range stop must be a multiple of the step")
|
|
|
|
self.range = r
|
|
|
|
def __repr__(self):
|
|
return '<Gst.Int64Range [%d,%d,%d]>' % (self.range.start,
|
|
self.range.stop, self.range.step)
|
|
|
|
def __str__(self):
|
|
if self.range.step == 1:
|
|
return '(int64)[%d,%d]' % (self.range.start, self.range.stop)
|
|
else:
|
|
return '(int64)[%d,%d,%d]' % (self.range.start, self.range.stop,
|
|
self.range.step)
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, range):
|
|
return self.range == other
|
|
elif isinstance(other, IntRange):
|
|
return self.range == other.range
|
|
return False
|
|
|
|
|
|
class Bitmask(Gst.Bitmask):
|
|
def __init__(self, v):
|
|
if not isinstance(v, int):
|
|
raise TypeError("%s is not an int." % (type(v)))
|
|
|
|
self.v = int(v)
|
|
|
|
def __str__(self):
|
|
return hex(self.v)
|
|
|
|
def __eq__(self, other):
|
|
return self.v == other
|
|
|
|
|
|
Bitmask = override(Bitmask)
|
|
__all__.append('Bitmask')
|
|
|
|
|
|
if sys.version_info >= (3, 0):
|
|
Int64Range = override(Int64Range)
|
|
__all__.append('Int64Range')
|
|
|
|
|
|
class DoubleRange(Gst.DoubleRange):
|
|
def __init__(self, start, stop):
|
|
self.start = float(start)
|
|
self.stop = float(stop)
|
|
|
|
if (start >= stop):
|
|
raise TypeError("Range start must be smaller then stop")
|
|
|
|
def __repr__(self):
|
|
return '<Gst.DoubleRange [%s,%s]>' % (str(self.start), str(self.stop))
|
|
|
|
def __str__(self):
|
|
return '(double)[%s,%s]' % (str(self.range.start), str(self.range.stop))
|
|
|
|
|
|
DoubleRange = override(DoubleRange)
|
|
__all__.append('DoubleRange')
|
|
|
|
|
|
class FractionRange(Gst.FractionRange):
|
|
def __init__(self, start, stop):
|
|
if not isinstance(start, Gst.Fraction):
|
|
raise TypeError("%s is not a Gst.Fraction." % (type(start)))
|
|
|
|
if not isinstance(stop, Gst.Fraction):
|
|
raise TypeError("%s is not a Gst.Fraction." % (type(stop)))
|
|
|
|
if (float(start) >= float(stop)):
|
|
raise TypeError("Range start must be smaller then stop")
|
|
|
|
self.start = start
|
|
self.stop = stop
|
|
|
|
def __repr__(self):
|
|
return '<Gst.FractionRange [%s,%s]>' % (str(self.start),
|
|
str(self.stop))
|
|
|
|
def __str__(self):
|
|
return '(fraction)[%s,%s]' % (str(self.start), str(self.stop))
|
|
|
|
|
|
FractionRange = override(FractionRange)
|
|
__all__.append('FractionRange')
|
|
|
|
|
|
class ValueArray(Gst.ValueArray):
|
|
def __init__(self, array):
|
|
self.array = list(array)
|
|
|
|
def __getitem__(self, index):
|
|
return self.array[index]
|
|
|
|
def __setitem__(self, index, value):
|
|
self.array[index] = value
|
|
|
|
def __len__(self):
|
|
return len(self.array)
|
|
|
|
def __str__(self):
|
|
return '<' + ','.join(map(str, self.array)) + '>'
|
|
|
|
def __repr__(self):
|
|
return '<Gst.ValueArray %s>' % (str(self))
|
|
|
|
|
|
ValueArray = override(ValueArray)
|
|
__all__.append('ValueArray')
|
|
|
|
|
|
class ValueList(Gst.ValueList):
|
|
def __init__(self, array):
|
|
self.array = list(array)
|
|
|
|
def __getitem__(self, index):
|
|
return self.array[index]
|
|
|
|
def __setitem__(self, index, value):
|
|
self.array[index] = value
|
|
|
|
def __len__(self):
|
|
return len(self.array)
|
|
|
|
def __str__(self):
|
|
return '{' + ','.join(map(str, self.array)) + '}'
|
|
|
|
def __repr__(self):
|
|
return '<Gst.ValueList %s>' % (str(self))
|
|
|
|
|
|
ValueList = override(ValueList)
|
|
__all__.append('ValueList')
|
|
|
|
# From https://docs.python.org/3/library/itertools.html
|
|
|
|
|
|
def pairwise(iterable):
|
|
a, b = itertools.tee(iterable)
|
|
next(b, None)
|
|
return zip(a, b)
|
|
|
|
|
|
class MapInfo:
|
|
def __init__(self):
|
|
self.memory = None
|
|
self.flags = Gst.MapFlags(0)
|
|
self.size = 0
|
|
self.maxsize = 0
|
|
self.data = None
|
|
self.user_data = None
|
|
self.__parent__ = None
|
|
|
|
def __iter__(self):
|
|
# Make it behave like a tuple similar to the PyGObject generated API for
|
|
# the `Gst.Buffer.map()` and friends.
|
|
for i in (self.__parent__ is not None, self):
|
|
yield i
|
|
|
|
def __enter__(self):
|
|
if not self.__parent__:
|
|
raise MapError('MappingError', 'Mapping was not successful')
|
|
|
|
return self
|
|
|
|
def __exit__(self, type, value, tb):
|
|
if not self.__parent__.unmap(self):
|
|
raise MapError('MappingError', 'Unmapping was not successful')
|
|
|
|
|
|
__all__.append("MapInfo")
|
|
|
|
|
|
class Buffer(Gst.Buffer):
|
|
|
|
def map_range(self, idx, length, flags):
|
|
mapinfo = MapInfo()
|
|
if (_gi_gst.buffer_override_map_range(self, mapinfo, idx, length, int(flags))):
|
|
mapinfo.__parent__ = self
|
|
|
|
return mapinfo
|
|
|
|
def map(self, flags):
|
|
mapinfo = MapInfo()
|
|
if _gi_gst.buffer_override_map(self, mapinfo, int(flags)):
|
|
mapinfo.__parent__ = self
|
|
|
|
return mapinfo
|
|
|
|
def unmap(self, mapinfo):
|
|
mapinfo.__parent__ = None
|
|
return _gi_gst.buffer_override_unmap(self, mapinfo)
|
|
|
|
|
|
Buffer = override(Buffer)
|
|
__all__.append('Buffer')
|
|
|
|
|
|
class Memory(Gst.Memory):
|
|
|
|
def map(self, flags):
|
|
mapinfo = MapInfo()
|
|
if (_gi_gst.memory_override_map(self, mapinfo, int(flags))):
|
|
mapinfo.__parent__ = self
|
|
|
|
return mapinfo
|
|
|
|
def unmap(self, mapinfo):
|
|
mapinfo.__parent__ = None
|
|
return _gi_gst.memory_override_unmap(self, mapinfo)
|
|
|
|
|
|
Memory = override(Memory)
|
|
__all__.append('Memory')
|
|
|
|
|
|
def TIME_ARGS(time):
|
|
if time == Gst.CLOCK_TIME_NONE:
|
|
return "CLOCK_TIME_NONE"
|
|
|
|
return "%u:%02u:%02u.%09u" % (time / (Gst.SECOND * 60 * 60),
|
|
(time / (Gst.SECOND * 60)) % 60,
|
|
(time / Gst.SECOND) % 60,
|
|
time % Gst.SECOND)
|
|
|
|
|
|
__all__.append('TIME_ARGS')
|
|
|
|
from gi.overrides import _gi_gst
|
|
_gi_gst
|
|
|
|
# maybe more python and less C some day if core turns a bit more introspection
|
|
# and binding friendly in the debug area
|
|
Gst.trace = _gi_gst.trace
|
|
Gst.log = _gi_gst.log
|
|
Gst.debug = _gi_gst.debug
|
|
Gst.info = _gi_gst.info
|
|
Gst.warning = _gi_gst.warning
|
|
Gst.error = _gi_gst.error
|
|
Gst.fixme = _gi_gst.fixme
|
|
Gst.memdump = _gi_gst.memdump
|
|
|
|
# Make sure PyGst is not usable if GStreamer has not been initialized
|
|
|
|
|
|
class NotInitialized(Exception):
|
|
pass
|
|
|
|
|
|
__all__.append('NotInitialized')
|
|
|
|
|
|
def fake_method(*args):
|
|
raise NotInitialized("Please call Gst.init(argv) before using GStreamer")
|
|
|
|
|
|
real_functions = [o for o in inspect.getmembers(Gst) if isinstance(o[1], type(Gst.init))]
|
|
|
|
class_methods = []
|
|
for cname_klass in [o for o in inspect.getmembers(Gst) if isinstance(o[1], type(Gst.Element)) or isinstance(o[1], type(Gst.Caps))]:
|
|
class_methods.append((cname_klass,
|
|
[(o, cname_klass[1].__dict__[o])
|
|
for o in cname_klass[1].__dict__
|
|
if isinstance(cname_klass[1].__dict__[o], type(Gst.init))]))
|
|
|
|
pre_init_functions = set([
|
|
"init",
|
|
"init_check",
|
|
"deinit",
|
|
"is_initialized",
|
|
"debug_add_log_function",
|
|
"debug_add_ring_buffer_logger",
|
|
"debug_remove_log_function",
|
|
"debug_remove_log_function_by_data",
|
|
"debug_remove_ring_buffer_logger",
|
|
"debug_set_active",
|
|
"debug_set_color_mode",
|
|
"debug_set_color_mode_from_string",
|
|
"debug_set_colored",
|
|
"debug_set_default_threshold",
|
|
])
|
|
|
|
|
|
def init_pygst():
|
|
for fname, function in real_functions:
|
|
if fname not in ["init", "init_check", "deinit"]:
|
|
setattr(Gst, fname, function)
|
|
|
|
for cname_class, methods in class_methods:
|
|
for mname, method in methods:
|
|
setattr(cname_class[1], mname, method)
|
|
|
|
|
|
def deinit_pygst():
|
|
for fname, func in real_functions:
|
|
if fname not in pre_init_functions:
|
|
setattr(Gst, fname, fake_method)
|
|
for cname_class, methods in class_methods:
|
|
for mname, method in methods:
|
|
setattr(cname_class[1], mname, fake_method)
|
|
|
|
|
|
real_init = Gst.init
|
|
|
|
|
|
def init(argv=None):
|
|
init_pygst()
|
|
|
|
if Gst.is_initialized():
|
|
return True
|
|
|
|
return real_init(argv)
|
|
|
|
|
|
Gst.init = init
|
|
|
|
real_init_check = Gst.init_check
|
|
|
|
|
|
def init_check(argv):
|
|
init_pygst()
|
|
if Gst.is_initialized():
|
|
return True
|
|
|
|
return real_init_check(argv)
|
|
|
|
|
|
Gst.init_check = init_check
|
|
|
|
real_deinit = Gst.deinit
|
|
|
|
|
|
def deinit():
|
|
deinit_pygst()
|
|
return real_deinit()
|
|
|
|
|
|
def init_python():
|
|
if not Gst.is_initialized():
|
|
raise NotInitialized("Gst.init_python should never be called before GStreamer itself is initialized")
|
|
|
|
init_pygst()
|
|
|
|
|
|
Gst.deinit = deinit
|
|
Gst.init_python = init_python
|
|
|
|
if not Gst.is_initialized():
|
|
deinit_pygst()
|