def test_vmhd_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:16, uintbe:16, uintbe:16, uintbe:16",
20, b"vmhd", 0, b"\x00\x00\x01",
0, 0, 0, 0)
box_header = FullBoxHeader()
vmhd = bx_def.VMHD(box_header)
vmhd.header.type = b"vmhd"
vmhd.header.version = 0
vmhd.header.flags = b"\x00\x00\x01"
vmhd.graphicsmode = 0
vmhd.opcolor = [0, 0, 0]
vmhd.refresh_box_size()
box = vmhd
assert box.header.type == b"vmhd"
assert box.header.box_size == 20
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x01"
assert box.graphicsmode == 0
assert box.opcolor == [0, 0, 0]
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def test_mett_box():
bs = pack("uintbe:32, bytes:4, "
"uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, "
"uintbe:16, "
"bytes:1, bytes:11",
28, b"mett",
0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1,
b'\0', b'image/heif\0')
box_header = BoxHeader()
mett = bx_def.METT(box_header)
mett.header.type = b"mett"
mett.data_reference_index = 1
mett.content_encoding = b'\0'
mett.mime_format = b'image/heif\0'
mett.refresh_box_size()
box = mett
assert box.header.type == b"mett"
assert box.header.box_size == 28
assert box.data_reference_index == 1
assert box.content_encoding == b'\0'
assert box.mime_format == b'image/heif\0'
assert len(box.boxes) == 0
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def test_clap_box():
bs = pack("uintbe:32, bytes:4, "
"uintbe:32, uintbe:32, uintbe:32, uintbe:32, "
"intbe:32, uintbe:32, intbe:32, uintbe:32",
40, b"clap",
500, 1, 333, 1,
-12, 2, -179, 2)
box_header = Parser.parse_header(bs)
clap = bx_def.CLAP.parse_box(bs, box_header)
box = clap
assert box.header.start_pos == 0
assert box.header.type == b"clap"
assert box.header.box_size == 40
assert box.clean_aperture_width_n == 500
assert box.clean_aperture_width_d == 1
assert box.clean_aperture_height_n == 333
assert box.clean_aperture_height_d == 1
assert box.horiz_off_n == -12
assert box.horiz_off_d == 2
assert box.vert_off_n == -179
assert box.vert_off_d == 2
assert bytes(box) == bs.bytes
def test_stts_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32",
24, b"stts", 0, b"\x00\x00\x00",
1, 1, 1)
box_header = FullBoxHeader()
stts = bx_def.STTS(box_header)
stts.header.type = b"stts"
stts.header.version = 0
stts.header.flags = b"\x00\x00\x00"
entry = stts.append_and_return()
entry.sample_count = 1
entry.sample_delta = 1
stts.refresh_box_size()
box = stts
assert box.header.type == b"stts"
assert box.header.box_size == 24
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.entry_count == 1
assert len(box.entries) == 1
assert box.entries[0].sample_count == 1
assert box.entries[0].sample_delta == 1
parsed_box = next(Parser.parse(bs))
parsed_box.load(bs)
assert bytes(parsed_box) == bs.bytes
assert bytes(box) == bs.bytes
def test_stsz_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32",
24, b"stsz", 0, b"\x00\x00\x00",
0, 1, 1)
box_header = FullBoxHeader()
stsz = bx_def.STSZ(box_header)
stsz.header.type = b"stsz"
stsz.header.version = 0
stsz.header.flags = b"\x00\x00\x00"
stsz.sample_size = 0
sample = stsz.append_and_return()
sample.entry_size = 1
stsz.refresh_box_size()
box = stsz
assert box.header.type == b"stsz"
assert box.header.box_size == 24
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.sample_size == 0
assert box.sample_count == 1
assert len(box.samples) == 1
assert box.samples[0].entry_size == 1
parsed_box = next(Parser.parse(bs))
parsed_box.load(bs)
assert bytes(parsed_box) == bs.bytes
assert bytes(box) == bs.bytes
def test_ctts_box_v1():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, intbe:32",
24, b"ctts", 1, b"\x00\x00\x00",
1, 1, -1)
box_header = FullBoxHeader()
ctts = bx_def.CTTS(box_header)
ctts.header.type = b"ctts"
ctts.header.version = 1
ctts.header.flags = b"\x00\x00\x00"
entry = ctts.append_and_return()
entry.sample_count = 1
entry.sample_offset = (-1, "intbe:32")
ctts.refresh_box_size()
box = ctts
assert box.header.type == b"ctts"
assert box.header.box_size == 24
assert box.header.version == 1
assert box.header.flags == b"\x00\x00\x00"
assert box.entry_count == 1
assert len(box.entries) == 1
assert box.entries[0].sample_count == 1
assert box.entries[0].sample_offset == -1
parsed_box = next(Parser.parse(bs))
parsed_box.load(bs)
assert bytes(parsed_box) == bs.bytes
assert bytes(box) == bs.bytes
def test_co64_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:64, uintbe:64, uintbe:64",
40, b"co64", 0, b"\x00\x00\x00",
3, 0, 1, 2)
box_header = Parser.parse_header(bs)
stco = bx_def.CO64.parse_box(bs, box_header)
box = stco
assert box.header.start_pos == 0
assert box.header.type == b"co64"
assert box.header.box_size == 40
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.entry_count == 3
assert len(box.entries) == 0
box.load(bs)
assert len(box.entries) == 3
assert box.entries[0].chunk_offset == 0
assert box.entries[1].chunk_offset == 1
assert box.entries[2].chunk_offset == 2
assert bytes(box) == bs.bytes
def test_mvhd_box_v1():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:64, uintbe:64, uintbe:32, uintbe:64, "
"uintbe:16, uintbe:16, uintbe:8, uintbe:8, "
"bits:16, bits:32, bits:32, "
"uintbe:32, uintbe:32, uintbe:32, uintbe:32, uintbe:32, uintbe:32, uintbe:32, uintbe:32, uintbe:32, "
"bits:32, bits:32, bits:32, bits:32, bits:32, bits:32, "
"uintbe:32",
120, b"mvhd", 1, b"\x00\x00\x00",
3596199850, 3596199850, 48000, 6720608,
1, 0, 1, 0,
b"\x00" * 2, b"\x00" * 4, b"\x00" * 4,
65536, 0, 0, 0, 65536, 0, 0, 0, 1073741824,
b"\x00" * 4, b"\x00" * 4, b"\x00" * 4, b"\x00" * 4, b"\x00" * 4, b"\x00" * 4,
3)
box_header = FullBoxHeader()
mvhd = bx_def.MVHD(box_header)
mvhd.header.type = b"mvhd"
mvhd.header.version = 1
mvhd.header.flags = b"\x00\x00\x00"
mvhd.creation_time = 3596199850
mvhd.modification_time = 3596199850
mvhd.timescale = 48000
mvhd.duration = 6720608
mvhd.rate = [1, 0]
mvhd.volume = [1, 0]
mvhd.matrix = [65536, 0, 0, 0, 65536, 0, 0, 0, 1073741824]
mvhd.pre_defined = [b"\x00" * 4] * 6
mvhd.next_track_id = 3
mvhd.refresh_box_size()
box = mvhd
assert box.header.type == b"mvhd"
assert box.header.box_size == 120
assert box.header.version == 1
assert box.header.flags == b"\x00\x00\x00"
assert box.creation_time == 3596199850
assert box.modification_time == 3596199850
assert box.timescale == 48000
assert box.duration == 6720608
assert box.rate == [1, 0]
assert box.volume == [1, 0]
assert box.matrix == [65536, 0, 0, 0, 65536, 0, 0, 0, 1073741824]
assert box.pre_defined == [b"\x00" * 4] * 6
assert box.next_track_id == 3
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def test_stsz_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32",
24, b"stsz", 0, b"\x00\x00\x00",
0, 1, 1)
box_header = Parser.parse_header(bs)
stsz = bx_def.STSZ.parse_box(bs, box_header)
box = stsz
assert box.header.start_pos == 0
assert box.header.type == b"stsz"
assert box.header.box_size == 24
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.sample_size == 0
assert box.sample_count == 1
assert len(box.samples) == 0
box.load(bs)
assert len(box.samples) == 1
assert box.samples[0].entry_size == 1
assert bytes(box) == bs.bytes
def test_stsc_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32, uintbe:32",
28, b"stsc", 0, b"\x00\x00\x00",
1, 1, 1, 1)
box_header = Parser.parse_header(bs)
stsc = bx_def.STSC.parse_box(bs, box_header)
box = stsc
assert box.header.start_pos == 0
assert box.header.type == b"stsc"
assert box.header.box_size == 28
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.entry_count == 1
assert len(box.entries) == 0
box.load(bs)
assert len(box.entries) == 1
assert box.entries[0].first_chunk == 1
assert box.entries[0].samples_per_chunk == 1
assert box.entries[0].sample_description_index == 1
assert bytes(box) == bs.bytes
def test_ctts_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32",
24, b"ctts", 0, b"\x00\x00\x00",
1, 1, 1)
box_header = Parser.parse_header(bs)
ctts = bx_def.CTTS.parse_box(bs, box_header)
box = ctts
assert box.header.start_pos == 0
assert box.header.type == b"ctts"
assert box.header.box_size == 24
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.entry_count == 1
assert len(box.entries) == 0
box.load(bs)
assert len(box.entries) == 1
assert box.entries[0].sample_count == 1
assert box.entries[0].sample_offset == 1
assert bytes(box) == bs.bytes
def test_mdhd_header_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32, uintbe:32, "
"bits:1, uint:5, uint:5, uint:5, bits:16",
32, b"mdhd", 0, b"\x00\x00\x00",
3596199850, 3596199850, 30000, 4200196,
0x1, 21, 14, 4, b"\x00" * 2)
box_header = Parser.parse_header(bs)
mdhd = parse.MDHD.parse_box(bs, box_header)
box = mdhd
assert box.header.start_pos == 0
assert box.header.type == b"mdhd"
assert box.header.box_size == 32
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.creation_time == 3596199850
assert box.modification_time == 3596199850
assert box.timescale == 30000
assert box.duration == 4200196
assert box.language == [21, 14, 4]
assert box.pre_defined == 0
assert bytes(box) == bs.bytes
def test_elst_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, uintbe:32, uintbe:32, uintbe:16, uintbe:16",
28, b"elst", 0, b"\x00\x00\x00",
1, 3000, 0, 1, 0)
box_header = Parser.parse_header(bs)
elst = bx_def.ELST.parse_box(bs, box_header)
box = elst
assert box.header.start_pos == 0
assert box.header.type == b"elst"
assert box.header.box_size == 28
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.entry_count == 1
assert len(box.entries) == 0
box.load(bs)
assert len(box.entries) == 1
assert box.entries[0].segment_duration == 3000
assert box.entries[0].media_time == 0
assert box.entries[0].media_rate_integer == 1
assert box.entries[0].media_rate_fraction == 0
assert bytes(box) == bs.bytes
def test_hdlr_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24, "
"uintbe:32, bytes:4, bits:32, bits:32, bits:32, bytes:19",
51, b"hdlr", 0, b"\x00\x00\x00",
0, b"vide", b"\x00" * 4, b"\x00" * 4, b"\x00" * 4, b"Vireo Eyes v2.4.22\0")
box_header = FullBoxHeader()
hdlr = bx_def.HDLR(box_header)
hdlr.header.type = b"hdlr"
hdlr.header.version = 0
hdlr.header.flags = b"\x00\x00\x00"
hdlr.pre_defined = 0
hdlr.handler_type = b"vide"
hdlr.name = b"Vireo Eyes v2.4.22\0"
hdlr.refresh_box_size()
box = hdlr
assert box.header.type == b"hdlr"
assert box.header.box_size == 51
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert box.pre_defined == 0
assert box.handler_type == b"vide"
assert box.name == b"Vireo Eyes v2.4.22\0"
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def test_sbtt_box():
bs = pack("uintbe:32, bytes:4, "
"uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, "
"uintbe:16, "
"bytes:1, bytes:11",
28, b"sbtt",
0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1,
b'\0', b'text/plain\0')
box_header = Parser.parse_header(bs)
mett = bx_def.METT.parse_box(bs, box_header)
box = mett
assert box.header.start_pos == 0
assert box.header.type == b"sbtt"
assert box.header.box_size == 28
assert box.data_reference_index == 1
assert box.content_encoding == b'\0'
assert box.mime_format == b'text/plain\0'
assert len(box.boxes) == 0
assert bytes(box) == bs.bytes
def test_ftyp_box_w_no_type():
bs = pack("uintbe:32, bytes:4, "
"bytes:4, uintbe:32, bytes:8",
24, b"ftyp",
b"bzna", 10, b"mp42mp41")
box_header = BoxHeader()
ftyp = bx_def.FTYP(box_header)
ftyp.header.type = b"ftyp"
ftyp.major_brand = (1652190817,) # b"bzna"
ftyp.minor_version = (10,)
ftyp.compatible_brands = ([1836069938, # b"mp42"
1836069937],) # b"mp41"
ftyp.refresh_box_size()
box = ftyp
assert box.header.type == b"ftyp"
assert box.header.box_size == 24
assert box.major_brand == 1652190817 # b"bzna"
assert box.minor_version == 10
assert box.compatible_brands == [1836069938, # b"mp42"
1836069937] # b"mp41"
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def test_sbtt_box():
bs = pack("uintbe:32, bytes:4, "
"uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, "
"uintbe:16, "
"bytes:1, bytes:11",
28, b"sbtt",
0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1,
b'\0', b'text/plain\0')
box_header = BoxHeader()
stxt = bx_def.STXT(box_header)
stxt.header.type = b"sbtt"
stxt.data_reference_index = 1
stxt.content_encoding = b'\0'
stxt.mime_format = b'text/plain\0'
stxt.refresh_box_size()
box = stxt
assert box.header.type == b"sbtt"
assert box.header.box_size == 28
assert box.data_reference_index == 1
assert box.content_encoding == b'\0'
assert box.mime_format == b'text/plain\0'
assert len(box.boxes) == 0
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def tune_video(filename, im_width, im_height):
bstr = ConstBitStream(filename=filename)
boxes = [box for box in Parser.parse(bstr)]
# skip 'free' box
boxes = boxes[:1] + boxes[2:]
ftyp = boxes[0]
mdat = boxes[1]
moov = boxes[2]
# pop 'udta' box
moov.boxes.pop()
trak = moov.boxes[-1]
# remove edts
mdia = trak.pop()
trak.pop()
trak.append(mdia)
for box in boxes:
box.load(bstr)
box.refresh_box_size()
ftyp.major_brand = 1769172845 # b"isom"
ftyp.minor_version = 0
ftyp.compatible_brands = [1769172845] # b"isom"
ftyp.refresh_box_size()
# moov.trak.mdia.minf.stbl
stbl = moov.boxes[-1].boxes[-1].boxes[-1].boxes[-1]
# moov.trak.mdia.minf.stbl.stsd.hvc1
hvc1 = stbl.boxes[0].boxes[0]
clap = bx_def.CLAP(BoxHeader())
clap.header.type = b"clap"
clap.clean_aperture_width_n = im_width
clap.clean_aperture_width_d = 1
clap.clean_aperture_height_n = im_height
clap.clean_aperture_height_d = 1
clap.horiz_off_n = im_width - 512
clap.horiz_off_d = 2
clap.vert_off_n = im_height - 512
clap.vert_off_d = 2
# insert clap before pasp
pasp = hvc1.pop()
hvc1.append(clap)
hvc1.append(pasp)
stco = stbl.boxes[-1]
stco.entries[
0].chunk_offset = ftyp.header.box_size + mdat.header.header_size
moov.refresh_box_size()
return b''.join(bytes(box) for box in boxes)
def test_photo_heic_bytes():
bstr = ConstBitStream(filename="data/photo.heic")
boxes = [box for box in Parser.parse(bstr)]
assert b''.join([bytes(box) for box in boxes]) != bstr.bytes
for box in boxes:
box.load(bstr)
assert b''.join([bytes(box) for box in boxes]) == bstr.bytes
def test_box_header():
bs = pack("uintbe:32, bytes:4", 100, b"abcd")
box_header = Parser.parse_header(bs)
assert box_header.start_pos == 0
assert box_header.type == b"abcd"
assert box_header.box_size == 100
assert box_header.header_size == 8
assert box_header.content_size == 92
assert bytes(box_header) == bs.bytes
def test_box_header_extended():
bs = pack("uintbe:32, bytes:4, uintbe:64", 1, b"abcd", parse.MAX_UINT_32 + 1)
box_header = Parser.parse_header(bs)
assert box_header.start_pos == 0
assert box_header.type == b"abcd"
assert box_header.box_size == parse.MAX_UINT_32 + 1
assert box_header.header_size == 16
assert box_header.content_size == parse.MAX_UINT_32 + 1 - 16
assert bytes(box_header) == bs.bytes
def test_video_bytes():
bstr = ConstBitStream(filename="tests/data/small_vid.mp4")
boxes = [box for box in Parser.parse(bstr)]
assert b''.join([bytes(box) for box in boxes]) != bstr.bytes
for box in boxes:
box.load(bstr)
assert b''.join([bytes(box) for box in boxes]) == bstr.bytes
def test_box_header_extended_user_type():
bs = pack("uintbe:32, bytes:4, uintbe:64, bytes:16", 1, b"uuid",
parse.MAX_UINT_32 + 1, b":benzina\x00\x00\x00\x00\x00\x00\x00\x00")
box_header = Parser.parse_header(bs)
assert box_header.start_pos == 0
assert box_header.type == b"uuid:benzina\x00\x00\x00\x00\x00\x00\x00\x00"
assert box_header.box_size == parse.MAX_UINT_32 + 1
assert box_header.header_size == 32
assert box_header.content_size == parse.MAX_UINT_32 + 1 - 32
assert bytes(box_header) == bs.bytes
def test_box_header_user_type():
bs = pack("uintbe:32, bytes:4, bytes:16", 100, b"uuid",
b":benzina\x00\x00\x00\x00\x00\x00\x00\x00")
box_header = Parser.parse_header(bs)
assert box_header.start_pos == 0
assert box_header.type == b"uuid:benzina\x00\x00\x00\x00\x00\x00\x00\x00"
assert box_header.box_size == 100
assert box_header.header_size == 24
assert box_header.content_size == 76
assert bytes(box_header) == bs.bytes
def test_avc1_box():
bs = pack("uintbe:32, bytes:4, "
"uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, uintbe:8, "
"uintbe:16, "
"uintbe:16, uintbe:16, uintbe:32, uintbe:32, uintbe:32, "
"uintbe:16, uintbe:16, uintbe:16, uintbe:16, uintbe:16, uintbe:16, "
"uintbe:32, "
"uintbe:16, bytes:32, uintbe:16, "
"intbe:16",
86, b"avc1",
0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1,
0x0, 0x0, 0x0, 0x0, 0x0,
512, 512, 72, 0, 72, 0,
0x0,
1, b'\0' * 32, 24,
-1)
box_header = BoxHeader()
avc1 = bx_def.AVC1(box_header)
avc1.header.type = b"avc1"
avc1.data_reference_index = 1
avc1.width = 512
avc1.height = 512
avc1.horizresolution = [72, 0]
avc1.vertresolution = [72, 0]
avc1.frame_count = 1
avc1.compressorname = b'\0' * 32
avc1.depth = 24
avc1.refresh_box_size()
box = avc1
assert box.header.type == b"avc1"
assert box.header.box_size == 86
assert box.data_reference_index == 1
assert box.width == 512
assert box.height == 512
assert box.horizresolution == [72, 0]
assert box.vertresolution == [72, 0]
assert box.frame_count == 1
assert box.compressorname == b'\0' * 32
assert box.depth == 24
assert len(box.boxes) == 0
assert bytes(next(Parser.parse(bs))) == bs.bytes
assert bytes(box) == bs.bytes
def test_mdat_box_empty():
bs = pack("uintbe:32, bytes:4",
8, b"mdat")
box_header = Parser.parse_header(bs)
mdat = bx_def.MDAT.parse_box(bs, box_header)
mdat.load(bs)
box = mdat
assert box.header.start_pos == 0
assert box.header.type == b"mdat"
assert box.header.box_size == 8
assert box.data == b''
assert bytes(box) == bs.bytes
def test_nmhd_box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24",
12, b"nmhd", 0, b"\x00\x00\x00")
box_header = Parser.parse_header(bs)
nmhd = bx_def.NMHD.parse_box(bs, box_header)
box = nmhd
assert box.header.start_pos == 0
assert box.header.type == b"nmhd"
assert box.header.box_size == 12
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x00"
assert bytes(box) == bs.bytes
def test_pasp_box():
bs = pack("uintbe:32, bytes:4, uintbe:32, uintbe:32",
16, b"pasp", 150, 157)
box_header = Parser.parse_header(bs)
pasp = bx_def.PASP.parse_box(bs, box_header)
box = pasp
assert box.header.start_pos == 0
assert box.header.type == b"pasp"
assert box.header.box_size == 16
assert box.h_spacing == 150
assert box.v_spacing == 157
assert bytes(box) == bs.bytes
def test_full_box_header():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24",
100, b"abcd", 1, b"\x00\x00\x07")
box_header = Parser.parse_header(bs)
full_box_header = parse.FullBoxHeader()
full_box_header.extend_header(bs, box_header)
del box_header
assert full_box_header.start_pos == 0
assert full_box_header.type == b"abcd"
assert full_box_header.box_size == 100
assert full_box_header.header_size == 12
assert full_box_header.content_size == 88
assert full_box_header.version == 1
assert full_box_header.flags == b"\x00\x00\x07"
assert bytes(full_box_header) == bs.bytes
def test_url__box():
bs = pack("uintbe:32, bytes:4, uintbe:8, bits:24",
12, b"url ", 0, b"\x00\x00\x01")
box_header = Parser.parse_header(bs)
url_ = bx_def.URL_.parse_box(bs, box_header)
box = url_
assert box.header.start_pos == 0
assert box.header.type == b"url "
assert box.header.box_size == 12
assert box.header.version == 0
assert box.header.flags == b"\x00\x00\x01"
assert box.location is None
assert bytes(box) == bs.bytes
