Audio

lib/mic/chunk.go

@@ -0,0 +1,15 @@
+package mic
+
+// ponytail: cap listen buffer at 5s; excess dropped from front (slow poll won't OOM agent).
+const maxChunkPCM = SampleRate * BytesPerSample * 5
+
+func appendChunkPCM(buf []byte, pcm []byte) []byte {
+	if len(pcm) == 0 {
+		return buf
+	}
+	buf = append(buf, pcm...)
+	if len(buf) <= maxChunkPCM {
+		return buf
+	}
+	return append([]byte(nil), buf[len(buf)-maxChunkPCM:]...)
+}