Viewing file:  __init__.py (6.67 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
#
# gst-python
# Copyright (C) 2002 David I. Lehn
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Author: David I. Lehn <dlehn@users.sourceforge.net>
try:
import gstlibtoolimporter
gstlibtoolimporter.install()
except ImportError:
gstlibtoolimporter = None
import sys
# we always require 2.0 of pygtk; so if pygtk is not imported anywhere
# yet, we import pygtk here and .require
if 'gobject' not in sys.modules:
import pygtk
pygtk.require('2.0')
class Value:
def __init__(self, type):
assert type in ('fourcc', 'intrange', 'doublerange', 'fractionrange', 'fraction')
self.type = type
class Fourcc(Value):
def __init__(self, string):
Value.__init__(self, 'fourcc')
self.fourcc = string
def __repr__(self):
return '<gst.Fourcc %s>' % self.fourcc
def __eq__(self, other):
if isinstance(other, Fourcc):
return self.fourcc == other.fourcc
return False
def __ne__(self, other):
return not self.__eq__(other)
class IntRange(Value):
def __init__(self, low, high):
Value.__init__(self, 'intrange')
self.low = low
self.high = high
def __repr__(self):
return '<gst.IntRange [%d, %d]>' % (self.low, self.high)
class DoubleRange(Value):
def __init__(self, low, high):
Value.__init__(self, 'doublerange')
self.low = low
self.high = high
def __repr__(self):
return '<gst.DoubleRange [%f, %f]>' % (self.low, self.high)
class FractionRange(Value):
def __init__(self, low, high):
Value.__init__(self, 'fractionrange')
self.low = low
self.high = high
def __repr__(self):
return '<gst.FractionRange [%d/%d, %d/%d]>' % (self.low.num,
self.low.denom,
self.high.num,
self.high.denom)
class Fraction(Value):
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
Value.__init__(self, 'fraction')
self.num = num
self.denom = denom
__simplify()
def __repr__(self):
return '<gst.Fraction %d/%d>' % (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
__rmul__ = __mul__
def __div__(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
def __rdiv__(self, other):
if isinstance(other, int):
return Fraction(self.denom * other, self.num)
return TypeError
def __float__(self):
return float(self.num) / float(self.denom)
try:
dlsave = sys.getdlopenflags()
from DLFCN import RTLD_GLOBAL, RTLD_LAZY
except AttributeError:
# windows doesn't have sys.getdlopenflags()
RTLD_GLOBAL = -1
RTLD_LAZY = -1
except ImportError:
RTLD_GLOBAL = -1
RTLD_LAZY = -1
import os
osname = os.uname()[0]
if osname == 'Linux' or osname == 'SunOS' or osname == 'FreeBSD' or osname == 'GNU/kFreeBSD' or osname == 'GNU':
machinename = os.uname()[4]
if machinename == 'mips' or machinename == 'mips64':
RTLD_GLOBAL = 0x4
RTLD_LAZY = 0x1
else:
RTLD_GLOBAL = 0x100
RTLD_LAZY = 0x1
elif osname == 'Darwin':
RTLD_GLOBAL = 0x8
RTLD_LAZY = 0x1
del os
except:
RTLD_GLOBAL = -1
RTLD_LAZY = -1
if RTLD_GLOBAL != -1 and RTLD_LAZY != -1:
sys.setdlopenflags(RTLD_LAZY | RTLD_GLOBAL)
try:
import libxml2
except:
pass
from _gst import *
import interfaces
if RTLD_GLOBAL != -1 and RTLD_LAZY != -1:
sys.setdlopenflags(dlsave)
del sys
version = get_gst_version
# Fixes for API cleanups that would cause an API breakage.
# See #446674
import warnings
if locals().has_key("parse_bin_from_description"):
def gst_parse_bin_from_description(*args, **kwargs):
warnings.warn("gst_parse_bin_from_description() is deprecated, please use parse_bin_from_description instead",
DeprecationWarning)
return parse_bin_from_description(*args, **kwargs)
if locals().has_key("message_new_buffering"):
def gst_message_new_buffering(*args, **kwargs):
warnings.warn("gst_message_new_buffering() is deprecated, please use message_new_buffering() instead",
DeprecationWarning)
return message_new_buffering(*args, **kwargs)
# this restores previously installed importhooks, so we don't interfere
# with other people's module importers
# it also clears out the module completely as if it were never loaded,
# so that if anyone else imports gstltihooks the hooks get installed
if gstlibtoolimporter is not None:
import audio
import pbutils
import tag
import video
gstlibtoolimporter.uninstall()
import sys
del sys.modules["gstlibtoolimporter"]
|