Sha256: 79c3eaefa5d11ed3a0b4183e53260734349c1ee742f61a39230f7f21ca99a998
Contents?: true
Size: 1.5 KB
Versions: 12
Compression:
Stored size: 1.5 KB
Contents
module FLV
# Represents the header chunk present at the very beginning of any FLV file.
class Header
include Base
attr_accessor :version, :has_audio, :has_video, :extra, :path
FLV_SIGNATURE = [String, {:bytes => 3}].freeze
SIGNATURE = 'FLV'
MIN_OFFSET = 9
FLAGS = { :has_video => 1, :has_audio => 4 }.freeze
def read_packed(io, *) #:nodoc:
signature, self.version, type_flags, offset = \
io >> FLV_SIGNATURE >> :char >> :char >> :unsigned_long
raise RuntimeError.new("typeflags is #{signature}, #{version}, #{type_flags}, #{offset}") unless Fixnum === type_flags
FLAGS.each {|flag,mask| send("#{flag}=", type_flags & mask > 0) }
self.extra = io.read(offset - MIN_OFFSET)
ignore_PreviousTagSize0 = io.read :unsigned_long
self.path = io.try :path
raise IOError("Wrong Signature (#{signature} instead of #{SIGNATURE})") unless SIGNATURE == signature
end
def write_packed(io, *) #:nodoc:
self.extra ||= ""
type_flags = FLAGS.sum{|flag, mask | send(flag) ? mask : 0}
io << SIGNATURE << [self.version || 1, :char] << [type_flags, :char] <<
[MIN_OFFSET + self.extra.length, :unsigned_long] << self.extra << [0, :unsigned_long]
end
def debug(format, *)
format.header("Header", path)
format.values(to_hash.tap{|h| [:path, :timestamp, :body].each{|key| h.delete(key)}})
end
def timestamp
0
end
def body
self
end
end
end
Version data entries
12 entries across 12 versions & 2 rubygems