RageSoundManager::AttenuateBuf -> RageSoundUtil::Attenuate

comment

stepmania/src/RageSoundManager.cpp

@@ -1,5 +1,13 @@
-/* Handle and provide an interface to the sound driver.  Delete sounds that
- * have been detached from their owner when they're finished playing. */
+/*
+ * This manager has several distinct purposes:
+ *
+ * Load and handle with the sound driver.
+ * Handle most communication between the sound driver and RageSound.
+ * Factory and reference count RageSoundReader objects for RageSound.
+ * User-level:
+ *  - global volume management
+ *  - sound detaching ("play and delete when done playing")
+ */
 
 #include "global.h"
 #include "RageSoundManager.h"
@@ -347,16 +355,6 @@ void RageSoundManager::SetPlayOnlyCriticalSounds( bool bPlayOnlyCriticalSounds )
 	g_SoundManMutex.Unlock(); /* finished with m_bPlayOnlyCriticalSounds */
 }
 
-/* Standalone helpers: */
-void RageSoundManager::AttenuateBuf( int16_t *pBuf, int iSamples, float fVolume )
-{
-	while( iSamples-- )
-	{
-		*pBuf = int16_t( (*pBuf) * fVolume );
-		++pBuf;
-	}
-}
-
 /*
  * Copyright (c) 2002-2004 Glenn Maynard
  * All rights reserved.

stepmania/src/RageSoundManager.h

@@ -58,8 +58,6 @@ public:
 	RageSound *PlaySound( RageSound &snd, const RageSoundParams *params = NULL );
 	RageSound *PlayCopyOfSound( RageSound &snd, const RageSoundParams *params = NULL );
 
-	static void AttenuateBuf( int16_t *pBuf, int iSamples, float fVolume );
-
 private:
 	/* Set of sounds that we've taken over (and are responsible for deleting
 	 * when they're finished playing): */

stepmania/src/RageSoundUtil.cpp

@@ -5,6 +5,15 @@
 /* Some of these functions assume a channel count: */
 static const int channels = 2;
 
+void RageSoundUtil::Attenuate( int16_t *pBuf, int iSamples, float fVolume )
+{
+	while( iSamples-- )
+	{
+		*pBuf = int16_t( (*pBuf) * fVolume );
+		++pBuf;
+	}
+}
+
 /* Pan buffer left or right; fPos is -1...+1.  Buffer is assumed to be stereo. */
 void RageSoundUtil::Pan( int16_t *buffer, int frames, float fPos )
 {

stepmania/src/RageSoundUtil.h

@@ -5,6 +5,7 @@
 
 namespace RageSoundUtil
 {
+	void Attenuate( int16_t *pBuf, int iSamples, float fVolume );
 	void Pan( int16_t *pBuffer, int iFrames, float fPos );
 	void Fade( int16_t *pBuffer, int iFrames, float fStartVolume, float fEndVolume  );
 	void ConvertMonoToStereoInPlace( int16_t *pBuffer, int iFrames );