From 7df1ed171cc1b857e3d72780196d24ab4f155a90 Mon Sep 17 00:00:00 2001
From: nitodeco <nitodeco@users.noreply.github.com>
Date: Sun, 26 Jan 2025 00:57:08 +0100
Subject: [PATCH] fix buffer boundary error

---
 src/lib/alaw.ts  | 9 ++++++---
 src/lib/mulaw.ts | 9 ++++++---
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/lib/alaw.ts b/src/lib/alaw.ts
index cb343f7..3904c5e 100644
--- a/src/lib/alaw.ts
+++ b/src/lib/alaw.ts
@@ -89,10 +89,13 @@ export function decode(samples: Uint8Array): Int16Array {
  * @returns {Buffer} Buffer of 8-bit A-Law samples
  */
 export function encodeBuffer(buffer: Buffer): Buffer {
-  const samples = new Int16Array(buffer.length / 2);
-  for (let i = 0; i < buffer.length; i += 2) {
-    samples[i / 2] = buffer.readInt16LE(i);
+  const numSamples = Math.floor(buffer.length / 2);
+  const samples = new Int16Array(numSamples);
+
+  for (let i = 0; i < numSamples; i++) {
+    samples[i] = buffer.readInt16LE(i * 2);
   }
+
   return Buffer.from(encode(samples).buffer);
 }
 
diff --git a/src/lib/mulaw.ts b/src/lib/mulaw.ts
index d4e3798..b06bee0 100644
--- a/src/lib/mulaw.ts
+++ b/src/lib/mulaw.ts
@@ -83,10 +83,13 @@ export function decode(samples: Uint8Array): Int16Array {
  * @returns {Buffer} Buffer of 8-bit μ-Law samples
  */
 export function encodeBuffer(buffer: Buffer): Buffer {
-  const samples = new Int16Array(buffer.length / 2);
-  for (let i = 0; i < buffer.length; i += 2) {
-    samples[i / 2] = buffer.readInt16LE(i);
+  const numSamples = Math.floor(buffer.length / 2);
+  const samples = new Int16Array(numSamples);
+
+  for (let i = 0; i < numSamples; i++) {
+    samples[i] = buffer.readInt16LE(i * 2);
   }
+
   return Buffer.from(encode(samples).buffer);
 }