local PCMGenerator = require('class')('PCMGenerator')

function PCMGenerator:__init(fn)
	self._fn = fn
end

function PCMGenerator:read(n)
	local pcm = {}
	local fn = self._fn
	for i = 1, n, 2 do
		local left, right = fn()
		pcm[i] = tonumber(left) or 0
		pcm[i + 1] = tonumber(right) or pcm[i]
	end
	return pcm
end

return PCMGenerator