File size: 5,313 Bytes
44bafb2 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 |
# All credits to https://github.com/LuanRT/googlevideo
from typing import Optional
from pytubefix.sabr.common import FormatId
from pytubefix.sabr.proto import BinaryReader, BinaryWriter
from pytubefix.sabr.video_streaming.time_range import TimeRange
class MediaHeader:
def __init__(self):
self.headerId: int = 0
self.videoId: str = ""
self.itag: int = 0
self.lmt: int = 0
self.xtags: str = ""
self.startRange: int = 0
self.compressionAlgorithm: int = 0
self.isInitSeg: bool = False
self.sequenceNumber: int = 0
self.field10: int = 0
self.startMs: int = 0
self.durationMs: int = 0
self.formatId: Optional[FormatId] = None
self.contentLength: int = 0
self.timeRange: Optional[TimeRange] = None
@staticmethod
def decode(reader, length: Optional[int] = None):
if not isinstance(reader, BinaryReader) :
reader = BinaryReader(reader)
end = reader.len if length is None else reader.pos + length
message = MediaHeader()
while reader.pos < end:
tag = reader.uint32()
field = tag >> 3
if field == 1 and tag == 8:
message.headerId = reader.uint32()
continue
elif field == 2 and tag == 18:
message.videoId = reader.string()
continue
elif field == 3 and tag == 24:
message.itag = reader.int32()
continue
elif field == 4 and tag == 32:
message.lmt = long_to_number(reader.uint64())
continue
elif field == 5 and tag == 42:
message.xtags = reader.string()
continue
elif field == 6 and tag == 48:
message.startRange = long_to_number(reader.int64())
continue
elif field == 7 and tag == 56:
message.compressionAlgorithm = reader.int32()
continue
elif field == 8 and tag == 64:
message.isInitSeg = reader.bool()
continue
elif field == 9 and tag == 72:
message.sequenceNumber = long_to_number(reader.int64())
continue
elif field == 10 and tag == 80:
message.field10 = long_to_number(reader.int64())
continue
elif field == 11 and tag == 88:
message.startMs = long_to_number(reader.int64())
continue
elif field == 12 and tag == 96:
message.durationMs = long_to_number(reader.int64())
continue
elif field == 13 and tag == 106:
length = reader.uint32()
message.formatId = FormatId.decode(reader, length)
continue
elif field == 14 and tag == 112:
message.contentLength = long_to_number(reader.int64())
continue
elif field == 15 and tag == 122:
length = reader.uint32()
message.timeRange = TimeRange.decode(reader, length)
continue
elif (tag & 7) == 4 or tag == 0:
break
else:
reader.skip(tag & 7)
return message
@staticmethod
def encode(message: dict, writer=None):
if writer is None:
writer = BinaryWriter()
if message.get("headerId", 0):
writer.uint32(8).uint32(message["headerId"])
if message.get("videoId", ""):
writer.uint32(18).string(message["videoId"])
if message.get("itag", 0):
writer.uint32(24).int32(message["itag"])
if message.get("lmt", 0):
writer.uint32(32).uint64(message["lmt"])
if message.get("xtags", ""):
writer.uint32(42).string(message["xtags"])
if message.get("startRange", 0):
writer.uint32(48).int64(message["startRange"])
if message.get("compressionAlgorithm", 0):
writer.uint32(56).int32(message["compressionAlgorithm"])
if message.get("isInitSeg", False):
writer.uint32(64).bool(message["isInitSeg"])
if message.get("sequenceNumber", 0):
writer.uint32(72).int64(message["sequenceNumber"])
if message.get("field10", 0):
writer.uint32(80).int64(message["field10"])
if message.get("startMs", 0):
writer.uint32(88).int64(message["startMs"])
if message.get("durationMs", 0):
writer.uint32(96).int64(message["durationMs"])
if message.get("formatId", 0):
FormatId.encode(message["formatId"], writer.uint32(106).fork()).join()
if message.get("contentLength", 0):
writer.uint32(112).int64(message["contentLength"])
if message.get("timeRange", 0):
TimeRange.encode(message["timeRange"], writer.uint32(122).fork()).join()
return writer
def long_to_number(int64_value):
value = int(str(int64_value))
if value > (2 ** 53 - 1):
raise OverflowError("Value is larger than 9007199254740991")
if value < -(2 ** 53 - 1):
raise OverflowError("Value is smaller than -9007199254740991")
return value |