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wave: add SubAudio method

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SubAudio returns part of the original audio sharing the buffer.
This commit is contained in:
Atsushi Watanabe
2020-06-08 15:10:44 +09:00
committed by Lukas Herman
parent 438ee8a3d0
commit 0c3bf8af3b
4 changed files with 122 additions and 0 deletions
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41
pkg/wave/float32_test.go
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@@ -51,3 +51,44 @@ func TestFloat32(t *testing.T) {
})
}
}
func TestFloat32SubAudio(t *testing.T) {
t.Run("Interleaved", func(t *testing.T) {
in := &Float32Interleaved{
Data: []float32{
0.1, -0.5, 0.2, -0.6, 0.3, -0.7, 0.4, -0.8, 0.5, -0.9, 0.6, -1.0, 0.7, -1.1, 0.8, -1.2,
},
Size: ChunkInfo{8, 2, 48000},
}
expected := &Float32Interleaved{
Data: []float32{
0.3, -0.7, 0.4, -0.8, 0.5, -0.9,
},
Size: ChunkInfo{3, 2, 48000},
}
out := in.SubAudio(2, 3)
if !reflect.DeepEqual(expected, out) {
t.Errorf("SubAudio differs, expected: %v, got: %v", expected, out)
}
})
t.Run("NonInterleaved", func(t *testing.T) {
in := &Float32NonInterleaved{
Data: [][]float32{
{0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8},
{-0.5, -0.6, -0.7, -0.8, -0.9, -1.0, -1.1, -1.2},
},
Size: ChunkInfo{8, 2, 48000},
}
expected := &Float32NonInterleaved{
Data: [][]float32{
{0.3, 0.4, 0.5},
{-0.7, -0.8, -0.9},
},
Size: ChunkInfo{3, 2, 48000},
}
out := in.SubAudio(2, 3)
if !reflect.DeepEqual(expected, out) {
t.Errorf("SubAudio differs, expected: %v, got: %v", expected, out)
}
})
}