92 lines
2.8 KiB
Julia
92 lines
2.8 KiB
Julia
using Base.Test
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using AudioIO
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import AudioIO.AudioSample
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import AudioIO.AudioBuf
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import AudioIO.AudioRenderer
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import AudioIO.AudioNode
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import AudioIO.DeviceInfo
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import AudioIO.render
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test_info = DeviceInfo(44100, 512)
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dev_input = zeros(AudioSample, test_info.buf_size)
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# A TestNode just renders out 1:buf_size each frame
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type TestRenderer <: AudioRenderer end
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typealias TestNode AudioNode{TestRenderer}
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TestNode() = TestNode(TestRenderer())
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function render(node::TestRenderer,
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device_input::AudioBuf,
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info::DeviceInfo)
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return AudioSample[1:info.buf_size]
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end
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#### AudioMixer Tests ####
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# TODO: there should be a setup/teardown mechanism and some way to isolate
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# tests
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info("Testing AudioMixer...")
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mix = AudioMixer()
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render_output = render(mix, dev_input, test_info)
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@test render_output == AudioSample[]
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testnode = TestNode()
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mix = AudioMixer([testnode])
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render_output = render(mix, dev_input, test_info)
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@test render_output == AudioSample[1:test_info.buf_size]
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test1 = TestNode()
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test2 = TestNode()
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mix = AudioMixer([test1, test2])
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render_output = render(mix, dev_input, test_info)
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# make sure the two inputs are being added together
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@test render_output == 2 * AudioSample[1:test_info.buf_size]
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# now we'll stop one of the inputs and make sure it gets removed
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stop(test1)
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render_output = render(mix, dev_input, test_info)
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# make sure the two inputs are being added together
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@test render_output == AudioSample[1:test_info.buf_size]
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stop(mix)
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render_output = render(mix, dev_input, test_info)
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@test render_output == AudioSample[]
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info("Testing SinOSC...")
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freq = 440
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t = linspace(0,
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(test_info.buf_size-1) / test_info.sample_rate,
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test_info.buf_size)
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test_vect = convert(AudioBuf, sin(2pi * t * freq))
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osc = SinOsc(freq)
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render_output = render(osc, dev_input, test_info)
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@test_approx_eq(render_output, test_vect)
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stop(osc)
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render_output = render(osc, dev_input, test_info)
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@test render_output == AudioSample[]
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info("Testing ArrayPlayer...")
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v = rand(AudioSample, 44100)
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player = ArrayPlayer(v)
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render_output = render(player, dev_input, test_info)
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@test render_output == v[1:test_info.buf_size]
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render_output = render(player, dev_input, test_info)
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@test render_output == v[(test_info.buf_size + 1) : (2*test_info.buf_size)]
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stop(player)
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render_output = render(player, dev_input, test_info)
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@test render_output == AudioSample[]
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# give a vector just a bit larger than 1 buffer size
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v = rand(AudioSample, test_info.buf_size + 1)
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player = ArrayPlayer(v)
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render(player, dev_input, test_info)
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render_output = render(player, dev_input, test_info)
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@test render_output == v[test_info.buf_size+1:end]
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info("Testing Gain...")
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gained = TestNode() * 0.75
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render_output = render(gained, dev_input, test_info)
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@test render_output == 0.75 * AudioSample[1:test_info.buf_size]
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