Module: AlsaRawMIDI::TypeConversion
- Defined in:
- lib/alsa-rawmidi/type_conversion.rb
Overview
Helper for converting MIDI data
Class Method Summary collapse
-
.hex_string_to_numeric_bytes(string) ⇒ Array<Integer>
Convert a hex string to an array of numeric bytes eg “904040” -> [0x90, 0x40, 0x40].
-
.numeric_bytes_to_hex_string(bytes) ⇒ String
Convert an array of numeric bytes to a hex string eg [0x90, 0x40, 0x40] -> “904040”.
Class Method Details
.hex_string_to_numeric_bytes(string) ⇒ Array<Integer>
Convert a hex string to an array of numeric bytes eg “904040” -> [0x90, 0x40, 0x40]
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# File 'lib/alsa-rawmidi/type_conversion.rb', line 11 def hex_string_to_numeric_bytes(string) string = string.dup bytes = [] until string.length.zero? string_byte = string.slice!(0, 2) bytes << string_byte.hex end bytes end |
.numeric_bytes_to_hex_string(bytes) ⇒ String
Convert an array of numeric bytes to a hex string eg [0x90, 0x40, 0x40] -> “904040”
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# File 'lib/alsa-rawmidi/type_conversion.rb', line 24 def numeric_bytes_to_hex_string(bytes) string_bytes = bytes.map do |byte| string_byte = byte.to_s(16).upcase string_byte = "0#{string_byte}" if byte < 16 string_byte end string_bytes.join end |