sync: migrate ai-operator to Gitea (2026-08-10)

internal/audio/pcm16_test.go

@@ -0,0 +1,54 @@
+package audio
+
+import (
+	"encoding/binary"
+	"testing"
+	"time"
+)
+
+func pcm(samples int) []byte {
+	b := make([]byte, samples*2)
+	for i := 0; i < samples; i++ {
+		binary.LittleEndian.PutUint16(b[i*2:], uint16(int16(i)))
+	}
+	return b
+}
+func TestPCMBase64ChunkResample(t *testing.T) {
+	data := pcm(160)
+	if !IsPCM16Aligned(data) {
+		t.Fatal("aligned")
+	}
+	if IsPCM16Aligned([]byte{1}) {
+		t.Fatal("misaligned")
+	}
+	enc := Base64Encode(data)
+	dec, err := Base64Decode(enc)
+	if err != nil || len(dec) != len(data) {
+		t.Fatal(err)
+	}
+	chunks := ChunkBytes(data, 100)
+	if len(chunks) == 0 || len(chunks[0]) > 100 {
+		t.Fatal("chunks")
+	}
+	dur := ChunkPCM16ByDuration(data, 16000, 10*time.Millisecond)
+	if len(dur) != 1 {
+		t.Fatal("duration chunks")
+	}
+	up, err := ResamplePCM16MonoLinear(pcm(16000), 16000, 24000)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got := len(up) / 2; got < 23990 || got > 24010 {
+		t.Fatalf("up samples=%d", got)
+	}
+	down, err := ResamplePCM16MonoLinear(pcm(24000), 24000, 16000)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got := len(down) / 2; got < 15990 || got > 16010 {
+		t.Fatalf("down samples=%d", got)
+	}
+	if _, err := ResamplePCM16MonoLinear([]byte{1}, 16000, 24000); err == nil {
+		t.Fatal("want err")
+	}
+}