def test_packetize_one_small(self):
packages = [bytes([0xFF, 0xFF])]
packetize_packages = H264Encoder._packetize(packages)
self.assertListEqual(packages, packetize_packages)
packages = [bytes([0xFF]) * 1300]
packetize_packages = H264Encoder._packetize(packages)
self.assertListEqual(packages, packetize_packages)
def test_split_bitstream(self):
packages = list(H264Encoder._split_bitstream(b'\00\00\01\ff\00\00\01\ff'))
self.assertEqual(len(packages), 2)
packages = list(H264Encoder._split_bitstream(b'\00\00\00\01\ff'))
self.assertEqual(len(packages), 1)
packages = list(H264Encoder._split_bitstream(b'\00\00\00\00\00\00\01\ff\00\00\00\00\00'))
self.assertEqual(len(packages), 1)
def test_packetize_multiple_small(self):
packages = [bytes([0x01, 0xFF])] * 9
packetize_packages = H264Encoder._packetize(packages)
self.assertEqual(len(packetize_packages), 1)
self.assertEqual(packetize_packages[0][0] & 0x1F, 24)
packages = [bytes([0x01, 0xFF])] * 10
packetize_packages = H264Encoder._packetize(packages)
self.assertEqual(len(packetize_packages), 2)
self.assertEqual(packetize_packages[0][0] & 0x1F, 24)
self.assertEqual(packetize_packages[1], packages[-1])
def test_split_bitstream(self):
# No start code
packages = list(H264Encoder._split_bitstream(b"\x00\x00\x00\x00"))
self.assertEqual(packages, [])
# 3-byte start code
packages = list(
H264Encoder._split_bitstream(b"\x00\x00\x01\xFF\x00\x00\x01\xFB")
)
self.assertEqual(packages, [b"\xFF", b"\xFB"])
# 4-byte start code
packages = list(
H264Encoder._split_bitstream(b"\x00\x00\x00\x01\xFF\x00\x00\x00\x01\xFB")
)
self.assertEqual(packages, [b"\xFF", b"\xFB"])
# Multiple bytes in a packet
packages = list(
H264Encoder._split_bitstream(
b"\x00\x00\x00\x01\xFF\xAB\xCD\x00\x00\x00\x01\xFB"
)
)
self.assertEqual(packages, [b"\xFF\xAB\xCD", b"\xFB"])
# Skip leading 0s
packages = list(H264Encoder._split_bitstream(b"\x00\x00\x00\x01\xFF"))
self.assertEqual(packages, [b"\xFF"])
# Both leading and trailing 0s
packages = list(
H264Encoder._split_bitstream(
b"\x00\x00\x00\x00\x00\x00\x01\xFF\x00\x00\x00\x00\x00"
)
)
self.assertEqual(packages, [b"\xFF\x00\x00\x00\x00\x00"])
def test_packetize_two_small(self):
packages = [bytes([0x01, 0xFF]), bytes([0xFF, 0xFF])]
packetize_packages = H264Encoder._packetize(packages)
self.assertEqual(len(packetize_packages), 1)
self.assertEqual(packetize_packages[0][0] & 0x1F, 24)
def test_packetize_one_big(self):
packages = [bytes([0xFF, 0xFF] * 1000)]
packetize_packages = H264Encoder._packetize(packages)
self.assertEqual(len(packetize_packages), 2)
self.assertEqual(packetize_packages[0][0] & 0x1F, 28)
self.assertEqual(packetize_packages[1][0] & 0x1F, 28)