From dbffa5d5b5b3d183016c03953d3288f14339c7de Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 14 Nov 2025 16:39:27 +0000
Subject: [PATCH 1/2] Initial plan


From 7584dc284e4a3c551100c06071c91d5abade2879 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 14 Nov 2025 16:57:29 +0000
Subject: [PATCH 2/2] Add OpusDecoder test and fix 3-byte int parsing bug

Co-authored-by: futpib <4330357+futpib@users.noreply.github.com>
---
 src/dalvikExecutableParser.ts                        | 8 ++++----
 src/dalvikExecutableParserAgainstSmaliParser.test.ts | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/dalvikExecutableParser.ts b/src/dalvikExecutableParser.ts
index b47ae8b..e9bf510 100644
--- a/src/dalvikExecutableParser.ts
+++ b/src/dalvikExecutableParser.ts
@@ -947,11 +947,11 @@ const encodedValueIntParser: Parser<DalvikExecutableTaggedEncodedValue, Uint8Arr
 			return promiseCompose(
 				createFixedLengthSequenceParser(size),
 				uint8Array => {
-					const firstByte = uint8Array[0];
-					const firstBit = (firstByte & 0b1000_0000) >> 7;
-					const extensionByte = firstBit === 1 ? 0xFF : 0x00;
+					const lastByte = uint8Array[uint8Array.length - 1];
+					const signBit = (lastByte & 0b1000_0000) >> 7;
+					const extensionByte = signBit === 1 ? 0xFF : 0x00;
 
-					const buffer = Buffer.from([ extensionByte, ...uint8Array ]);
+					const buffer = Buffer.from([ ...uint8Array, extensionByte ]);
 					return { type: 'int' as const, value: buffer.readInt32LE(0) };
 				},
 			);
diff --git a/src/dalvikExecutableParserAgainstSmaliParser.test.ts b/src/dalvikExecutableParserAgainstSmaliParser.test.ts
index f60dc2b..653a795 100644
--- a/src/dalvikExecutableParserAgainstSmaliParser.test.ts
+++ b/src/dalvikExecutableParserAgainstSmaliParser.test.ts
@@ -305,6 +305,7 @@ const testCasesByCid: Record<string, Array<string | { smaliFilePath: string; iso
 		{ smaliFilePath: 'androidx/core/content/FileProvider', isolate: true },
 		{ smaliFilePath: 'androidx/core/view/KeyEventDispatcher', isolate: true },
 		{ smaliFilePath: 'com/google/android/exoplayer2/audio/Sonic', isolate: true },
+		{ smaliFilePath: 'com/google/android/exoplayer2/ext/opus/OpusDecoder', isolate: true },
 		{ smaliFilePath: 'com/google/android/gms/internal/common/zzg', isolate: true },
 		{ smaliFilePath: 'com/google/android/play/core/integrity/model/StandardIntegrityErrorCode', isolate: true },
 		{ smaliFilePath: 'com/google/common/math/IntMath', isolate: true },