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:]...)
}