celt-ruby
http://www.github.com/perrym5/celt-ruby
DESCRIPTION:
CELT-Ruby is a Ruby Gem for working with the CELT Audio Codec. CELT-Ruby uses the Ruby-FFI extension to wrap the native CELT library code. This means that you must have CELT installed in order for this gem to work.
FEATURES:
This gem was designed to fill a specific role in another one of my projects. As a result, the feature set is relatively small compared to the native libraries. However, I will accept any pull requests with additional functionality should someone need it.
What this library can do:
-
Encode raw audio to CELT
REQUIREMENTS:
-
Ruby >= 1.9.2
-
CELT 0.7 Library
INSTALL:
[sudo] gem install celt-ruby
USAGE:
# Create new encoder with a sample rate of 48 kHz, a frame size of 480 bytes and 1 channel
encoder = Celt::Encoder.new 48000, 480, 1
# Set the prediction request to 0
encoder.prediction_request = 0
# Set the VBR rate to 60,000
encoder.vbr_rate = 60000
# Return the bitstream version for this version of CELT
encoder.bitstream_version
# Encode some raw audio
compressed_size = [@encoder.vbr_rate / 800, 127].min
encoded = encoder.encode(raw_audio, compressed_size)
# Safely destroy encoder
encoder.destroy