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|
Shine = require "../../dist/libshine.js"
{Reader} = require "wav"
fs = require "fs"
console.log ""
console.log "Executing encoding test"
bitrate = 128
str = fs.createReadStream "../lib/encode.wav"
fd = fs.openSync "./encode.mp3", "w"
reader = new Reader
str.pipe reader
write = (encoded) ->
return unless encoded.length > 0
buf = new Buffer encoded
fs.writeSync fd, buf, 0, buf.length
reader.on "format", (format) ->
console.log "Got WAV file."
shine = new Shine
bitrate: bitrate
samplerate: format.sampleRate
channels: format.channels
console.log "Encoding.."
started = new Date
duration = 0.0
samplerate = parseFloat format.sampleRate
reader.on "data", (buf) ->
samples = buf.length/(2*format.channels)
duration += parseFloat(samples) / samplerate
write shine.encode(convertInterleavedBuffer(buf, format.channels, samples))
reader.on "end", ->
write shine.close()
ended = new Date
encodingTime = (ended.getTime() - started.getTime())/1000
console.log "Done encoding."
console.log "File duration: #{duration.toFixed(2)} seconds"
console.log "Encoding time: #{encodingTime.toFixed(2)} seconds"
console.log "Encoding rate: #{(duration/encodingTime).toFixed(2)}X"
process.exit 0
convertInterleavedBuffer = (buf, channels, samples) ->
ret = new Array channels
for chan in [0..channels-1]
ret[chan] = new Int16Array samples
for i in [0..samples-1]
ret[chan][i] = buf.readInt16LE 2*(i*channels + chan)
ret
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