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https://github.com/vsariola/sointu.git
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38e9007bf8
Throughout sointu, we assume stereo audiobuffers, but were passing around []float32. This had several issues, including len(buf)/2 and numSamples*2 type of length conversion in many places. Also, it caused one bug in a test case, causing it to succeed when it should have not (the test had +-1 when it should have had +-2). This refactoring makes it impossible to have odd length buffer issues.
47 lines
3.1 KiB
Go
47 lines
3.1 KiB
Go
package oto_test
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import (
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"reflect"
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"testing"
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"github.com/vsariola/sointu"
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"github.com/vsariola/sointu/oto"
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)
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func TestFloatBufferToBytes(t *testing.T) {
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floats := sointu.AudioBuffer{{0, 0.000489128}, {0, 0.0019555532}, {0, 0.0043964}, {0, 0.007806882}, {0, 0.012180306}, {0, 0.017508084}, {0, 0.023779746}, {0, 0.030982954}, {0, 0.039103523}, {0, 0.04812544}, {0, 0.05803088}, {0, 0.068800256}, {0, 0.08041221}, {0, 0.09284368}, {0, 0.10606992}, {0, 0.120064534}, {0, 0.13479951}, {0, 0.1502453}, {0, 0.16637078}, {0, 0.18314338}, {0, 0.20052913}, {0, 0.21849263}, {0, 0.23699719}, {0, 0.2560048}, {0, 0.27547634}, {0, 0.29537144}, {0, 0.31564865}, {0, 0.33626547}, {0, 0.35717854}, {0, 0.37834346}, {0, 0.39971504}, {0, 0.4212474}, {0, 0.4428938}, {0, 0.46460703}, {0, 0.48633927}, {0, 0.50804216}, {0, 0.52966696}, {0, 0.5511646}, {0, 0.57248586}, {0, 0.5935812}, {0, 0.6144009}, {0, 0.63489544}, {0, 0.6550152}, {0, 0.67471063}, {0, 0.6939326}, {0, 0.712632}, {0, 0.7307603}, {0, 0.7482692}, {0, 0.7651111}, {0, 0.7812389}}
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bytes := []byte{0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0, 0x90, 0x0, 0x0, 0x0, 0xff, 0x0, 0x0, 0x0, 0x8f, 0x1, 0x0, 0x0, 0x3d, 0x2, 0x0, 0x0, 0xb, 0x3, 0x0, 0x0, 0xf7, 0x3, 0x0, 0x0, 0x1, 0x5, 0x0, 0x0, 0x28, 0x6, 0x0, 0x0, 0x6d, 0x7, 0x0, 0x0, 0xce, 0x8, 0x0, 0x0, 0x4a, 0xa, 0x0, 0x0, 0xe2, 0xb, 0x0, 0x0, 0x93, 0xd, 0x0, 0x0, 0x5e, 0xf, 0x0, 0x0, 0x40, 0x11, 0x0, 0x0, 0x3b, 0x13, 0x0, 0x0, 0x4b, 0x15, 0x0, 0x0, 0x71, 0x17, 0x0, 0x0, 0xaa, 0x19, 0x0, 0x0, 0xf7, 0x1b, 0x0, 0x0, 0x55, 0x1e, 0x0, 0x0, 0xc4, 0x20, 0x0, 0x0, 0x42, 0x23, 0x0, 0x0, 0xce, 0x25, 0x0, 0x0, 0x66, 0x28, 0x0, 0x0, 0xa, 0x2b, 0x0, 0x0, 0xb7, 0x2d, 0x0, 0x0, 0x6d, 0x30, 0x0, 0x0, 0x29, 0x33, 0x0, 0x0, 0xeb, 0x35, 0x0, 0x0, 0xb0, 0x38, 0x0, 0x0, 0x77, 0x3b, 0x0, 0x0, 0x3f, 0x3e, 0x0, 0x0, 0x7, 0x41, 0x0, 0x0, 0xcb, 0x43, 0x0, 0x0, 0x8c, 0x46, 0x0, 0x0, 0x46, 0x49, 0x0, 0x0, 0xf9, 0x4b, 0x0, 0x0, 0xa4, 0x4e, 0x0, 0x0, 0x43, 0x51, 0x0, 0x0, 0xd6, 0x53, 0x0, 0x0, 0x5c, 0x56, 0x0, 0x0, 0xd2, 0x58, 0x0, 0x0, 0x36, 0x5b, 0x0, 0x0, 0x88, 0x5d, 0x0, 0x0, 0xc6, 0x5f, 0x0, 0x0, 0xee, 0x61, 0x0, 0x0, 0xfe, 0x63}
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converted := oto.FloatBufferTo16BitLE(floats, nil)
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for i, v := range converted {
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if bytes[i] != v {
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t.Fail()
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t.Errorf("Unexpected conversion output byte %x (expected %x) at position %v", v, bytes[i], i)
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}
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}
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if !reflect.DeepEqual(converted, bytes) {
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t.Fatalf("Unexpected conversion output from FloatBufferTo16BitLE")
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}
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}
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func TestFloatBufferToBytesLimits(t *testing.T) {
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floats := sointu.AudioBuffer{{0, 1}, {-1, 0.999}, {-0.999, 0}}
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bytes := []byte{
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0x0, 0x0,
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0xFF, 0x7F, // float 1 = 0x7FFF = 0111111111111111
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0x01, 0x80, // float -1 = 0x8001 = 1000000000000001
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0xDE, 0x7F, // float 0.999 = 0x7FDE = 0111111111011110
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0x22, 0x80, // float -0.999 = 0x8022 = 1000000000100010
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0x0, 0x0,
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}
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converted := oto.FloatBufferTo16BitLE(floats, nil)
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for i, v := range converted {
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if bytes[i] != v {
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t.Fail()
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t.Errorf("Unexpected conversion output byte %x (expected %x) at position %v", v, bytes[i], i)
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}
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}
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if !reflect.DeepEqual(converted, bytes) {
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t.Fatalf("Unexpected conversion output from FloatBufferTo16BitLE")
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}
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}
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