Class: MIDI::MetaEvent
Instance Attribute Summary collapse
-
#data ⇒ Object
Returns the value of attribute data.
-
#meta_type ⇒ Object
readonly
Returns the value of attribute meta_type.
Attributes inherited from Event
#delta_time, #print_channel_numbers_from_one, #print_decimal_numbers, #print_note_names, #status, #time_from_start
Class Method Summary collapse
Instance Method Summary collapse
- #data_as_bytes ⇒ Object
- #data_as_str ⇒ Object
-
#initialize(meta_type, data = nil, delta_time = 0) ⇒ MetaEvent
constructor
A new instance of MetaEvent.
- #to_s ⇒ Object
Methods inherited from Event
#<=>, #channel_to_s, #number_to_s, #quantize_to
Constructor Details
#initialize(meta_type, data = nil, delta_time = 0) ⇒ MetaEvent
Returns a new instance of MetaEvent.
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# File 'lib/midilib/event.rb', line 431 def initialize(, data = nil, delta_time = 0) super(META_EVENT, delta_time) @meta_type = self.data = (data) end |
Instance Attribute Details
#data ⇒ Object
Returns the value of attribute data.
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# File 'lib/midilib/event.rb', line 421 def data @data end |
#meta_type ⇒ Object (readonly)
Returns the value of attribute meta_type.
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# File 'lib/midilib/event.rb', line 421 def @meta_type end |
Class Method Details
.bytes_as_str(bytes) ⇒ Object
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# File 'lib/midilib/event.rb', line 423 def self.bytes_as_str(bytes) bytes ? bytes.collect { |byte| byte.chr }.join : nil end |
.str_as_bytes(str) ⇒ Object
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# File 'lib/midilib/event.rb', line 427 def self.str_as_bytes(str) str.split(//).collect { |chr| chr.ord } end |
Instance Method Details
#data_as_bytes ⇒ Object
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# File 'lib/midilib/event.rb', line 437 def data_as_bytes data = [] data << @status data << @meta_type data << (@data ? Utils.as_var_len(@data.length) : 0) data << @data if @data data.flatten end |
#data_as_str ⇒ Object
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# File 'lib/midilib/event.rb', line 446 def data_as_str MetaEvent.bytes_as_str(@data) end |
#to_s ⇒ Object
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# File 'lib/midilib/event.rb', line 460 def to_s str = super() str << "meta #{number_to_s(@meta_type)} " # I know, I know...this isn't OO. str << case @meta_type when META_SEQ_NUM 'sequence number' when META_TEXT "text: #{data_as_str}" when META_COPYRIGHT "copyright: #{data_as_str}" when META_SEQ_NAME "sequence or track name: #{data_as_str}" when META_INSTRUMENT "instrument name: #{data_as_str}" when META_LYRIC "lyric: #{data_as_str}" when META_MARKER "marker: #{data_as_str}" when META_CUE "cue point: #{@data}" when META_TRACK_END 'track end' when META_SMPTE 'smpte' when META_TIME_SIG 'time signature' when META_KEY_SIG 'key signature' when META_SEQ_SPECIF 'sequence specific' else # Some other possible @meta_type values are handled by subclasses. '(other)' end str end |