--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtest/pcmwrite.c	Sun Nov 20 00:31:42 2022 +0000
@@ -0,0 +1,22 @@
+/*
+ * Here we implement our PCM write helper function.
+ */
+
+#include <stdint.h>
+#include "wavwriter.h"
+#include "pcmwrite.h"
+
+void write_pcm_to_wav(void *wav, const int16_t *pcm)
+{
+	uint8_t bytes[320], *dp;
+	int16_t samp;
+	unsigned n;
+
+	dp = bytes;
+	for (n = 0; n < 160; n++) {
+		samp = pcm[n];
+		*dp++ = samp & 0xFF;
+		*dp++ = (samp >> 8) & 0xFF;
+	}
+	wav_write_data(wav, bytes, 320);
+}