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| | # -*- encoding: binary -*-
# Copyright (C) 2013, Eric Wong <normalperson@yhbt.net>
# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
require './test/helper'
require 'dtas/source/sox'
require 'tempfile'
class TestSource < Minitest::Unit::TestCase
def teardown
@tempfiles.each { |tmp| tmp.close! }
end
def setup
@tempfiles = []
end
def x(cmd)
system(*cmd)
assert $?.success?, cmd.inspect
end
def new_file(suffix)
tmp = Tempfile.new(%W(tmp .#{suffix}))
@tempfiles << tmp
cmd = %W(sox -r 44100 -b 16 -c 2 -n #{tmp.path} trim 0 1)
return tmp if system(*cmd)
nil
end
def test_flac
return if `which metaflac`.strip.size == 0
tmp = new_file('flac') or return
source = DTAS::Source::Sox.new.try(tmp.path)
x(%W(metaflac --set-tag=FOO=BAR #{tmp.path}))
x(%W(metaflac --add-replay-gain #{tmp.path}))
assert_equal source.comments["FOO"], "BAR"
rg = source.replaygain
assert_kind_of DTAS::ReplayGain, rg
assert_in_delta 0.0, rg.track_peak.to_f, 0.00000001
assert_in_delta 0.0, rg.album_peak.to_f, 0.00000001
assert_operator rg.album_gain.to_f, :>, 1
assert_operator rg.track_gain.to_f, :>, 1
end
def test_mp3gain
return if `which mp3gain`.strip.size == 0
a = new_file('mp3') or return
b = new_file('mp3') or return
source = DTAS::Source::Sox.new.try(a.path)
# redirect stdout to /dev/null temporarily, mp3gain is noisy
File.open("/dev/null", "w") do |null|
old_out = $stdout.dup
$stdout.reopen(null)
begin
x(%W(mp3gain -q #{a.path} #{b.path}))
ensure
$stdout.reopen(old_out)
old_out.close
end
end
rg = source.replaygain
assert_kind_of DTAS::ReplayGain, rg
assert_in_delta 0.0, rg.track_peak.to_f, 0.00000001
assert_in_delta 0.0, rg.album_peak.to_f, 0.00000001
assert_operator rg.album_gain.to_f, :>, 1
assert_operator rg.track_gain.to_f, :>, 1
end
def test_offset
tmp = new_file('sox') or return
source = DTAS::Source::Sox.new.try(*%W(#{tmp.path} 5s))
assert_equal 5, source.offset_samples
source = DTAS::Source::Sox.new.try(*%W(#{tmp.path} 1:00:00.5))
expect = 1 * 60 * 60 * 44100 + (44100/2)
assert_equal expect, source.offset_samples
source = DTAS::Source::Sox.new.try(*%W(#{tmp.path} 1:10.5))
expect = 1 * 60 * 44100 + (10 * 44100) + (44100/2)
assert_equal expect, source.offset_samples
source = DTAS::Source::Sox.new.try(*%W(#{tmp.path} 10.03))
expect = (10 * 44100) + (44100 * 3/100.0)
assert_equal expect, source.offset_samples
end
def test_offset_us
tmp = new_file('sox') or return
source = DTAS::Source::Sox.new.try(*%W(#{tmp.path} 441s))
assert_equal 10000.0, source.offset_us
source = DTAS::Source::Sox.new.try(*%W(#{tmp.path} 22050s))
assert_equal 500000.0, source.offset_us
source = DTAS::Source::Sox.new.try(tmp.path, '1')
assert_equal 1000000.0, source.offset_us
end
def test_format_from_file
Tempfile.open(%w(tmp .wav)) do |tmp|
# generate an empty file with 1s of audio
cmd = %W(sox -r 96000 -b 24 -c 2 -n #{tmp.path} trim 0 1)
system(*cmd)
assert $?.success?, "#{cmd.inspect} failed: #$?"
fmt = DTAS::Source::Sox.new.try(tmp.path).format
assert_equal 96000, fmt.rate
assert_equal 2, fmt.channels
tmp.unlink
end
end
end
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