From a2a1d2a36d0b8e7c921f5310ca478f16ccf9034c Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Tue, 6 Sep 2016 11:55:29 +0300
Subject: [PATCH] Fixed significant distortion of sound effects with FMOD
 Studio API

---
 src/sound/fmodsound.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/sound/fmodsound.cpp b/src/sound/fmodsound.cpp
index 2db5a98a1..81bbfb8c1 100644
--- a/src/sound/fmodsound.cpp
+++ b/src/sound/fmodsound.cpp
@@ -2758,6 +2758,16 @@ std::pair<SoundHandle,bool> FMODSoundRenderer::LoadSoundRaw(BYTE *sfxdata, int l
 	exinfo.defaultfrequency = frequency;
 	switch (bits)
 	{
+#if FMOD_STUDIO
+	case -8:
+		// Need to convert sample data from signed to unsigned.
+		for (int i = 0; i < length; i++)
+		{
+			sfxdata[i] ^= 0x80;
+		}
+
+	case 8:
+#else // !FMOD_STUDIO
 	case 8:
 		// Need to convert sample data from unsigned to signed.
 		for (int i = 0; i < length; ++i)
@@ -2766,6 +2776,7 @@ std::pair<SoundHandle,bool> FMODSoundRenderer::LoadSoundRaw(BYTE *sfxdata, int l
 		}
 
 	case -8:
+#endif // FMOD_STUDIO
 		exinfo.format = FMOD_SOUND_FORMAT_PCM8;
 		numsamples = length;
 		break;