45 lines
1.4 KiB
Julia
45 lines
1.4 KiB
Julia
using Base.Test
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using PortAudio
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test_info = PortAudio.DeviceInfo(44100, 512)
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dev_input = zeros(PortAudio.AudioSample, test_info.buf_size)
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# A TestNode just renders out 1:buf_size each frame
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type TestNode <: PortAudio.AudioNode
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end
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function PortAudio.render(node::TestNode,
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device_input::PortAudio.AudioBuf,
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info::PortAudio.DeviceInfo)
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return PortAudio.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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@test mix.mix_inputs == PortAudio.AudioNode[]
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@test PortAudio.render(mix, dev_input, test_info) == zeros(PortAudio.AudioSample, test_info.buf_size)
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testnode = TestNode()
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mix = AudioMixer([testnode])
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@test mix.mix_inputs == PortAudio.AudioNode[testnode]
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@test PortAudio.render(mix, dev_input, test_info) == PortAudio.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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@test PortAudio.render(mix, dev_input, test_info) == 2 * PortAudio.AudioSample[1:test_info.buf_size]
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info("Testing SinOSC...")
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freq = 440
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t = linspace(1 / test_info.sample_rate,
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test_info.buf_size / test_info.sample_rate,
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test_info.buf_size)
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test_vect = convert(PortAudio.AudioBuf, sin(2pi * t * freq))
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osc = SinOsc(freq)
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rendered = PortAudio.render(osc, dev_input, test_info)
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@test_approx_eq(rendered, test_vect)
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