Updated everything for dependencies. All sub packages are now part of the project. This was a massive update, hopefully won't have to be reverted.

gumble/go-opus/utils_test.go

@@ -0,0 +1,67 @@
+// Copyright © Go Opus Authors (see AUTHORS file)
+//
+// License for use of this code is detailed in the LICENSE file
+
+package opus
+
+import (
+	"math"
+)
+
+// utility functions for unit tests
+
+func addSineFloat32(buf []float32, sampleRate int, freq float64) {
+	factor := 2 * math.Pi * freq / float64(sampleRate)
+	for i := range buf {
+		buf[i] += float32(math.Sin(float64(i) * factor))
+	}
+}
+
+func addSine(buf []int16, sampleRate int, freq float64) {
+	factor := 2 * math.Pi * freq / float64(sampleRate)
+	for i := range buf {
+		buf[i] += int16(math.Sin(float64(i)*factor) * (math.MaxInt16 - 1))
+	}
+}
+
+func maxDiff(a []int16, b []int16) int32 {
+	if len(a) != len(b) {
+		return math.MaxInt16
+	}
+	var max int32 = 0
+	for i := range a {
+		d := int32(a[i]) - int32(b[i])
+		if d < 0 {
+			d = -d
+		}
+		if d > max {
+			max = d
+		}
+	}
+	return max
+}
+
+func interleave(a []int16, b []int16) []int16 {
+	if len(a) != len(b) {
+		panic("interleave: buffers must have equal length")
+	}
+	result := make([]int16, 2*len(a))
+	for i := range a {
+		result[2*i] = a[i]
+		result[2*i+1] = b[i]
+	}
+	return result
+}
+
+func split(interleaved []int16) ([]int16, []int16) {
+	if len(interleaved)%2 != 0 {
+		panic("split: interleaved buffer must have even number of samples")
+	}
+	left := make([]int16, len(interleaved)/2)
+	right := make([]int16, len(interleaved)/2)
+	for i := range left {
+		left[i] = interleaved[2*i]
+		right[i] = interleaved[2*i+1]
+	}
+	return left, right
+}