From 34e36fb85269775821efe8a07f7f47518bd1dbb1 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Wed, 12 Dec 2012 16:50:35 -0800
Subject: [PATCH] Add a method to get the time offset from sounds

---
 apps/openmw/mwsound/openal_output.cpp | 17 +++++++++++++++++
 apps/openmw/mwsound/sound.hpp         |  1 +
 2 files changed, 18 insertions(+)

diff --git a/apps/openmw/mwsound/openal_output.cpp b/apps/openmw/mwsound/openal_output.cpp
index bc6102beb1..4c62bb10f3 100644
--- a/apps/openmw/mwsound/openal_output.cpp
+++ b/apps/openmw/mwsound/openal_output.cpp
@@ -95,6 +95,7 @@ public:
 
     virtual void stop();
     virtual bool isPlaying();
+    virtual double getTimeOffset();
     virtual void update();
 
     void play();
@@ -259,6 +260,11 @@ bool OpenAL_SoundStream::isPlaying()
     return !mIsFinished;
 }
 
+double OpenAL_SoundStream::getTimeOffset()
+{
+    return 0.0;
+}
+
 void OpenAL_SoundStream::update()
 {
     ALfloat gain = mVolume*mBaseVolume;
@@ -348,6 +354,7 @@ public:
 
     virtual void stop();
     virtual bool isPlaying();
+    virtual double getTimeOffset();
     virtual void update();
 };
 
@@ -396,6 +403,16 @@ bool OpenAL_Sound::isPlaying()
     return state==AL_PLAYING || state==AL_PAUSED;
 }
 
+double OpenAL_Sound::getTimeOffset()
+{
+    ALfloat t;
+
+    alGetSourcef(mSource, AL_SEC_OFFSET, &t);
+    throwALerror();
+
+    return t;
+}
+
 void OpenAL_Sound::update()
 {
     ALfloat gain = mVolume*mBaseVolume;
diff --git a/apps/openmw/mwsound/sound.hpp b/apps/openmw/mwsound/sound.hpp
index 729147f75a..1b6f50ff47 100644
--- a/apps/openmw/mwsound/sound.hpp
+++ b/apps/openmw/mwsound/sound.hpp
@@ -26,6 +26,7 @@ namespace MWSound
     public:
         virtual void stop() = 0;
         virtual bool isPlaying() = 0;
+        virtual double getTimeOffset() = 0;
         void setPosition(const Ogre::Vector3 &pos) { mPos = pos; }
         void setVolume(float volume) { mVolume = volume; }