def testSubtract(self):
self.doSubtract(
gst.Caps ("some/mime, _int = [ 1, 2 ], list = { \"A\", \"B\", \"C\" }"),
gst.Caps ("some/mime, _int = 1, list = \"A\""))
self.doSubtract(
gst.Caps ("some/mime, _double = (double) 1.0; other/mime, _int = { 1, 2 }"),
gst.Caps ("some/mime, _double = (double) 1.0"))
def setUp(self):
TestCase.setUp(self)
self.caps = gst.caps_from_string('video/x-raw-yuv,width=10,framerate=5/1;video/x-raw-rgb,width=15,framerate=10/1')
self.assertEquals(self.caps.__refcount__, 1)
self.structure = self.caps[0]
self.any = gst.Caps("ANY")
self.assertEquals(self.any.__refcount__, 1)
self.empty = gst.Caps()
self.assertEquals(self.empty.__refcount__, 1)
def testCapsConstructFromString(self):
caps = gst.Caps('video/x-raw-yuv,width=10')
assert isinstance(caps, gst.Caps)
assert len(caps) == 1
assert isinstance(caps[0], gst.Structure)
assert caps[0].get_name() == 'video/x-raw-yuv'
assert isinstance(caps[0]['width'], int)
assert caps[0]['width'] == 10
def testCapsConstructFromStructure(self):
struct = gst.structure_from_string('video/x-raw-yuv,width=10,framerate=[0/1, 25/3]')
caps = gst.Caps(struct)
assert isinstance(caps, gst.Caps)
assert len(caps) == 1
assert isinstance(caps[0], gst.Structure)
assert caps[0].get_name() == 'video/x-raw-yuv'
assert isinstance(caps[0]['width'], int)
assert caps[0]['width'] == 10
assert isinstance(caps[0]['framerate'], gst.FractionRange)
def testNoneValue(self):
caps = gst.Caps("foo")
def invalid_assignment():
caps[0]["bar"] = None
self.assertRaises(TypeError, invalid_assignment)
def invalid_set_value():
caps[0].set_value("bar", None)
self.assertRaises(TypeError, invalid_set_value)
def testCapsContainingMiniObjects(self):
# buffer contains hex encoding of ascii 'abcd'
caps = gst.Caps("video/x-raw-yuv, buf=(buffer)61626364")
buf = caps[0]['buf']
assert isinstance(buf, gst.Buffer)
assert buf.data == "abcd"
buf = gst.Buffer("1234")
caps[0]['buf2'] = buf
buf2 = caps[0]['buf2']
assert buf2 == buf
def testCapsConstructFromStructures(self):
struct1 = gst.structure_from_string('video/x-raw-yuv,width=10')
struct2 = gst.structure_from_string('video/x-raw-rgb,height=20.0')
caps = gst.Caps(struct1, struct2)
assert isinstance(caps, gst.Caps)
assert len(caps) == 2
struct = caps[0]
assert isinstance(struct, gst.Structure), struct
assert struct.get_name() == 'video/x-raw-yuv', struct.get_name()
assert struct.has_key('width')
assert isinstance(struct['width'], int)
assert struct['width'] == 10
struct = caps[1]
assert isinstance(struct, gst.Structure), struct
assert struct.get_name() == 'video/x-raw-rgb', struct.get_name()
assert struct.has_key('height')
assert isinstance(struct['height'], float)
assert struct['height'] == 20.0
def application_awesome_type_find(typefind, arg1, arg2):
self.failUnlessEqual(arg1, 'arg1')
self.failUnlessEqual(arg2, 'arg2')
data = typefind.peek(0, 5)
self.failUnless(data == '', 'peek out of length??')
data = typefind.peek(0, 0)
self.failUnless(data == '', '0 peek??')
data = typefind.peek(3, 1)
self.failUnless(data == 'M')
data = typefind.peek(0, 4)
self.failUnless(data == 'AWSM')
typefind.suggest(gst.TYPE_FIND_MAXIMUM,
gst.Caps('application/awesome'))
def testTypeFind(self):
def application_awesome_type_find(typefind, arg1, arg2):
self.failUnlessEqual(arg1, 'arg1')
self.failUnlessEqual(arg2, 'arg2')
data = typefind.peek(0, 5)
self.failUnless(data == '', 'peek out of length??')
data = typefind.peek(0, 0)
self.failUnless(data == '', '0 peek??')
data = typefind.peek(3, 1)
self.failUnless(data == 'M')
data = typefind.peek(0, 4)
self.failUnless(data == 'AWSM')
typefind.suggest(gst.TYPE_FIND_MAXIMUM,
gst.Caps('application/awesome'))
res = gst.type_find_register('application/awesome', gst.RANK_PRIMARY,
application_awesome_type_find, ['.twi'],
gst.Caps('application/awesome'), 'arg1',
'arg2')
self.failUnless(res, 'type_find_register failed')
factory = None
factories = gst.type_find_factory_get_list()
for typefind_factory in factories:
if typefind_factory.get_name() == 'application/awesome':
factory = typefind_factory
break
self.failUnless(factory is not None)
obj = gst.Pad('src', gst.PAD_SRC)
buffer = gst.Buffer('AWSM')
caps, probability = gst.type_find_helper_for_buffer(obj, buffer)
self.failUnlessEqual(str(caps), 'application/awesome')
self.failUnlessEqual(probability, gst.TYPE_FIND_MAXIMUM)
def testCapsConstructEmpty(self):
caps = gst.Caps()
assert isinstance(caps, gst.Caps)
def testFilters(self):
name = 'video/x-raw-yuv'
filtercaps = gst.Caps(*[struct for struct in self.caps if struct.get_name() == name])
intersection = self.caps & 'video/x-raw-yuv'
assert filtercaps == intersection
def testTrueFalse(self):
'test that comparisons using caps work the intended way'
assert self.any # not empty even though it has no structures
assert not self.empty
assert not gst.Caps('EMPTY') # also empty
assert gst.Caps('your/mom')
def testCapsReferenceStructs(self):
'test that shows why it\'s not a good idea to use structures by reference'
caps = gst.Caps('hi/mom,width=0')
structure = caps[0]
del caps
assert structure['width'] == 0
