def test_mdhd_version_1(self, soun=b"soun"):
mdhd = Atom.render(b"mdhd", (b"\x01\x00\x00\x00" + b"\x00" * 16 +
b"\x00\x00\x00\x02" + # 2 Hz
b"\x00\x00\x00\x00\x00\x00\x00\x10"))
hdlr = Atom.render(b"hdlr", b"\x00" * 8 + soun)
mdia = Atom.render(b"mdia", mdhd + hdlr)
trak = Atom.render(b"trak", mdia)
moov = Atom.render(b"moov", trak)
fileobj = cBytesIO(moov)
atoms = Atoms(fileobj)
info = MP4Info(atoms, fileobj)
self.failUnlessEqual(info.length, 8)
def load(self, fp):
self.filename = fp.name
fileobj = fp
try:
atoms = Atoms(fileobj)
try: self.info = MP4Info(atoms, fileobj)
except StandardError, err:
raise MP4StreamInfoError, err, sys.exc_info()[2]
try: self.tags = MP4Tags(atoms, fileobj)
except MP4MetadataError:
self.tags = None
except StandardError, err:
raise MP4MetadataError, err, sys.exc_info()[2]
def test_multiple_tracks(self):
hdlr = Atom.render(b"hdlr", b"\x00" * 8 + b"whee")
mdia = Atom.render(b"mdia", hdlr)
trak1 = Atom.render(b"trak", mdia)
mdhd = Atom.render(b"mdhd", (b"\x01\x00\x00\x00" + b"\x00" * 16 +
b"\x00\x00\x00\x02" + # 2 Hz
b"\x00\x00\x00\x00\x00\x00\x00\x10"))
hdlr = Atom.render(b"hdlr", b"\x00" * 8 + b"soun")
mdia = Atom.render(b"mdia", mdhd + hdlr)
trak2 = Atom.render(b"trak", mdia)
moov = Atom.render(b"moov", trak1 + trak2)
fileobj = cBytesIO(moov)
atoms = Atoms(fileobj)
info = MP4Info(atoms, fileobj)
self.failUnlessEqual(info.length, 8)
def test_no_tracks(self):
moov = Atom.render(b"moov", b"")
fileobj = BytesIO(moov)
atoms = Atoms(fileobj)
with self.assertRaises(MP4StreamInfoError):
MP4Info(atoms, fileobj)