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import sys
from common import gst, unittest
class CapsTest(unittest.TestCase):
def setUp(self):
self.caps = gst.caps_from_string('video/x-raw-yuv,width=10,framerate=5.0;video/x-raw-rgb,width=15,framerate=10.0')
self.structure = self.caps.get_structure(0)
def testCapsMime(self):
mime = self.structure.get_name()
assert mime == 'video/x-raw-yuv'
def testCapsList(self):
'check if we can access Caps as a list'
structure = self.caps[0]
mime = structure.get_name()
assert mime == 'video/x-raw-yuv'
structure = self.caps[1]
mime = structure.get_name()
assert mime == 'video/x-raw-rgb'
def testCapsConstructEmpty(self):
caps = gst.Caps()
assert isinstance(caps, gst.Caps)
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')
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
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 testCapsStructureChange(self):
'test if changing the structure of the caps works by reference'
assert self.structure['width'] == 10
self.structure['width'] = 5
assert self.structure['width'] == 5.0
# check if we changed the caps as well
structure = self.caps[0]
assert structure['width'] == 5.0
def testCapsBadConstructor(self):
struct = gst.structure_from_string('video/x-raw-yuv,width=10')
self.assertRaises(TypeError, gst.Caps, None)
self.assertRaises(TypeError, gst.Caps, 1)
self.assertRaises(TypeError, gst.Caps, 2.0)
self.assertRaises(TypeError, gst.Caps, object)
self.assertRaises(TypeError, gst.Caps, 1, 2, 3)
# This causes segfault!
#self.assertRaises(TypeError, gst.Caps, struct, 10, None)
if __name__ == "__main__":
unittest.main()
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