class WahWah::Ogg::FlacTag
Attributes
bit_depth[R]
bitrate[R]
duration[R]
sample_rate[R]
Public Class Methods
new(identification_packet, comment_packet)
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# File lib/wahwah/ogg/flac_tag.rb, line 11 def initialize(identification_packet, comment_packet) # Identification packet structure: # # The one-byte packet type 0x7F # The four-byte ASCII signature "FLAC", i.e. 0x46, 0x4C, 0x41, 0x43 # A one-byte binary major version number for the mapping, e.g. 0x01 for mapping version 1.0 # A one-byte binary minor version number for the mapping, e.g. 0x00 for mapping version 1.0 # A two-byte, big-endian binary number signifying the number of header (non-audio) packets, not including this one. # The four-byte ASCII native FLAC signature "fLaC" according to the FLAC format specification # The STREAMINFO metadata block for the stream. # # The first identification packet is followed by one or more header packets. # Each such packet will contain a single native FLAC metadata block. # The first of these must be a VORBIS_COMMENT block. id, streaminfo_block_data = identification_packet.unpack('x9A4A*') return unless id == 'fLaC' streaminfo_block = Flac::Block.new(StringIO.new(streaminfo_block_data)) vorbis_comment_block = Flac::Block.new(StringIO.new(comment_packet)) parse_streaminfo_block(streaminfo_block.data) parse_vorbis_comment(vorbis_comment_block.data) end