class Zappa::RiffHeader
Attributes
chunk_id[R]
chunk_size[RW]
format[R]
Public Class Methods
new(file = nil)
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# File lib/zappa/wave/riff_header.rb, line 6 def initialize(file = nil) if file.nil? @chunk_id = 'RIFF' @chunk_size = 40 @format = 'WAVE' else unpack(file) end end
Public Instance Methods
pack()
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# File lib/zappa/wave/riff_header.rb, line 16 def pack @chunk_id + [@chunk_size].pack('V') + @format end
unpack(file)
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# File lib/zappa/wave/riff_header.rb, line 20 def unpack(file) @chunk_id = file.read(4) @chunk_size = file.read(4).unpack('V').first @format = file.read(4) fail 'ID is not RIFF' unless @chunk_id == 'RIFF' fail 'Format is not WAVE' unless @format == 'WAVE' end