89 lines
2.7 KiB
Julia
89 lines
2.7 KiB
Julia
module TestAudioIO
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using FactCheck
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using AudioIO
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import AudioIO.AudioBuf
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const TEST_SAMPLERATE = 44100
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const TEST_BUF_SIZE = 1024
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include("testhelpers.jl")
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type TestAudioStream <: AudioIO.AudioStream
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root::AudioIO.AudioMixer
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info::AudioIO.DeviceInfo
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function TestAudioStream()
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root = AudioMixer()
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new(root, AudioIO.DeviceInfo(TEST_SAMPLERATE, TEST_BUF_SIZE))
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end
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end
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# render the stream and return the next block of audio. This is used in testing
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# to simulate the audio callback that's normally called by the device.
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function process(stream::TestAudioStream)
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out_array = zeros(AudioIO.AudioSample, stream.info.buf_size)
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in_array = zeros(AudioIO.AudioSample, stream.info.buf_size)
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rendered = AudioIO.render(stream.root, in_array, stream.info)
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out_array[1:length(rendered)] = rendered
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return out_array
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end
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#### Test playing back various vector types ####
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facts("Array playback") do
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# data shared between tests, for convenience
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t = linspace(0, 2, 2 * 44100)
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phase = 2pi * 100 * t
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## Test Float32 arrays, this is currently the native audio playback format
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context("Playing Float32 arrays") do
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f32 = convert(Array{Float32}, sin(phase))
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test_stream = TestAudioStream()
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player = play(f32, test_stream)
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@fact process(test_stream) => f32[1:TEST_BUF_SIZE]
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end
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context("Playing Float64 arrays") do
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f64 = convert(Array{Float64}, sin(phase))
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test_stream = TestAudioStream()
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player = play(f64, test_stream)
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@fact process(test_stream) => convert(AudioBuf, f64[1:TEST_BUF_SIZE])
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end
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context("Playing Int8(Signed) arrays") do
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i8 = Int8[-127:127]
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test_stream = TestAudioStream()
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player = play(i8, test_stream)
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@fact process(test_stream)[1:255] =>
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mse(convert(AudioBuf, linspace(-1.0, 1.0, 255)))
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end
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context("Playing Uint8(Unsigned) arrays") do
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# for unsigned 8-bit audio silence is represented as 128, so the symmetric range
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# is 1-255
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ui8 = Uint8[1:255]
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test_stream = TestAudioStream()
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player = play(ui8, test_stream)
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@fact process(test_stream)[1:255] =>
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mse(convert(AudioBuf, linspace(-1.0, 1.0, 255)))
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end
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end
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facts("AudioNode Stopping") do
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test_stream = TestAudioStream()
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node = SinOsc(440)
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play(node, test_stream)
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process(test_stream)
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stop(node)
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@fact process(test_stream) => zeros(AudioIO.AudioSample, TEST_BUF_SIZE)
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end
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facts("Audio Device Listing") do
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# there aren't any devices on the Travis machine so just test that this doesn't crash
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@fact get_audio_devices() => issubtype(Array)
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end
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end # module TestAudioIO
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