From 88b890824b6691c90e0cd5828b212a65f07443e7 Mon Sep 17 00:00:00 2001
From: Ryan Houdek <Sonicadvance1@gmail.com>
Date: Fri, 14 Dec 2012 12:15:01 -0600
Subject: [PATCH] (CoreAudio) Retain volume value until initialization. Makes
 volume slider work when game isn't running. Fixes issue 5383.

---
 Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp | 8 ++++++++
 Source/Core/AudioCommon/Src/CoreAudioSoundStream.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp b/Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp
index d09bce85f9..f6d5d31bed 100644
--- a/Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp
+++ b/Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp
@@ -87,6 +87,13 @@ bool CoreAudioSound::Start()
 		return false;
 	}
 
+    err = AudioUnitSetParameter(audioUnit,
+					kHALOutputParam_Volume,
+					kAudioUnitParameterFlag_Output, 0,
+					m_volume / 100., 0);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error setting volume");
+
 	err = AudioUnitInitialize(audioUnit);
 	if (err != noErr) {
 		ERROR_LOG(AUDIO, "error initializing audiounit");
@@ -105,6 +112,7 @@ bool CoreAudioSound::Start()
 void CoreAudioSound::SetVolume(int volume)
 {
 	OSStatus err;
+    m_volume = volume;
 
 	err = AudioUnitSetParameter(audioUnit,
 					kHALOutputParam_Volume,
diff --git a/Source/Core/AudioCommon/Src/CoreAudioSoundStream.h b/Source/Core/AudioCommon/Src/CoreAudioSoundStream.h
index b7f7d96f53..581e4aabd8 100644
--- a/Source/Core/AudioCommon/Src/CoreAudioSoundStream.h
+++ b/Source/Core/AudioCommon/Src/CoreAudioSoundStream.h
@@ -47,6 +47,7 @@ public:
 
 private:
 	AudioUnit audioUnit;
+    int m_volume;
 
 	static OSStatus callback(void *inRefCon,
 		AudioUnitRenderActionFlags *ioActionFlags,