properly abstract the volume so we don't touch prefsman in RSM

fixes crash

stepmania/src/arch/Sound/DSoundHelpers.cpp

@@ -46,12 +46,8 @@ bool DSound::IsEmulated() const
 }
 
 DSoundBuf::DSoundBuf(DSound &ds, DSoundBuf::hw hardware,
-			int channels_, int samplerate_, int samplebits_, int writeahead_,
-			float vol)
+			int channels_, int samplerate_, int samplebits_, int writeahead_)
 {
-	ASSERT(vol >= 0);
-	ASSERT(vol <= 1);
-
 	channels = channels_;
 	samplerate = samplerate_;
 	samplebits = samplebits_;
@@ -79,15 +75,14 @@ DSoundBuf::DSoundBuf(DSound &ds, DSoundBuf::hw hardware,
 	DSBUFFERDESC format;
 	memset(&format, 0, sizeof(format));
 	format.dwSize = sizeof(format);
-	format.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_GLOBALFOCUS;
+	format.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_GLOBALFOCUS | DSBCAPS_CTRLVOLUME;
 	/* Don't use DSBCAPS_STATIC.  It's meant for static buffers, and we
 	 * only use streaming buffers. */
 	if(hardware == HW_HARDWARE)
 		format.dwFlags |= DSBCAPS_LOCHARDWARE;
 	else
 		format.dwFlags |= DSBCAPS_LOCSOFTWARE;
-	if(vol != 1)
-		format.dwFlags |= DSBCAPS_CTRLVOLUME;
+
 	format.dwBufferBytes = buffersize;
 	format.dwReserved = 0;
 	format.lpwfxFormat = &waveformat;
@@ -113,6 +108,12 @@ DSoundBuf::DSoundBuf(DSound &ds, DSoundBuf::hw hardware,
 		buffersize = bcaps.dwBufferBytes;
 		writeahead = min(writeahead, buffersize);
 	}
+}
+
+void DSoundBuf::SetVolume(float vol)
+{
+	ASSERT(vol >= 0);
+	ASSERT(vol <= 1);
 
 	float vl2 = log10f(vol) / log10f(2); /* vol log 2 */
 
@@ -122,7 +123,6 @@ DSoundBuf::DSoundBuf(DSound &ds, DSoundBuf::hw hardware,
 		buf->SetVolume(max(int(1000 * vl2), DSBVOLUME_MIN));
 }
 
-
 DSoundBuf::~DSoundBuf()
 {
 	buf->Release();

stepmania/src/arch/Sound/DSoundHelpers.h

@@ -39,8 +39,7 @@ class DSoundBuf
 public:
 	enum hw { HW_HARDWARE, HW_SOFTWARE, HW_DONT_CARE };
 	DSoundBuf(DSound &ds, hw hardware, 
-		int channels, int samplerate, int samplebits, int writeahead,
-		float vol=1);
+		int channels, int samplerate, int samplebits, int writeahead);
 
 	bool get_output_buf(char **buffer, unsigned *bufsiz, int *play_pos, int chunksize);
 	void release_output_buf(char *buffer, unsigned bufsiz);
@@ -48,6 +47,7 @@ public:
 	void Reset();
 	void Play();
 	void Stop();
+	void SetVolume(float vol);
 
 	~DSoundBuf();
 	int GetPosition() const;

stepmania/src/arch/Sound/RageSoundDriver.h

@@ -33,6 +33,10 @@ protected:
 	 * hearing it.  (This isn't necessarily the same as the buffer latency.) */
 	virtual float GetPlayLatency() const { return 0.0f; }
 
+	/* This is called if the volume changed; call SOUNDMAN->GetMixVolume() to
+	 * get it. */
+	virtual void VolumeChanged() { }
+
 public:
 	virtual ~RageSoundDriver() { }
 };

stepmania/src/arch/Sound/RageSoundDriver_DSound.cpp

@@ -12,7 +12,6 @@
 #include "../../RageUtil.h"
 #include "../../RageSound.h"
 #include "../../RageLog.h"
-#include "../../PrefsManager.h"
 #include "../../tls.h"
 #include "SDL.h"
 
@@ -165,8 +164,7 @@ RageSound_DSound::RageSound_DSound()
 		try {
 			newbuf = new DSoundBuf(ds, 
 				DSoundBuf::HW_HARDWARE,
-				channels, samplerate, 16, buffersize,
-				PREFSMAN->m_fSoundVolume);
+				channels, samplerate, 16, buffersize);
 		} catch(const RageException &e) {
 			/* If we didn't get at least 8, fail. */
 			if(i >= 8) break; /* OK */
@@ -188,8 +186,12 @@ RageSound_DSound::RageSound_DSound()
 		s->str_ds = newbuf;
 		stream_pool.push_back(s);
 	}
+
 	LOG->Trace("Got %i hardware buffers", stream_pool.size());
 
+	/* Set channel volumes. */
+	VolumeChanged();
+
 	MixerThreadPtr = SDL_CreateThread(MixerThread_start, this);
 }
 
@@ -197,12 +199,24 @@ RageSound_DSound::~RageSound_DSound()
 {
 	/* Signal the mixing thread to quit. */
 	shutdown = true;
+	LOG->Trace("Shutting down mixer thread ...");
+	LOG->Flush();
 	SDL_WaitThread(MixerThreadPtr, NULL);
+	LOG->Trace("Mixer thread shut down.");
+	LOG->Flush();
 
 	for(unsigned i = 0; i < stream_pool.size(); ++i)
 		delete stream_pool[i];
 }
 
+void RageSound_DSound::VolumeChanged()
+{
+	for(unsigned i = 0; i < stream_pool.size(); ++i)
+	{
+		stream_pool[i]->str_ds->SetVolume(SOUNDMAN->GetMixVolume());
+	}
+}
+
 void RageSound_DSound::StartMixing(RageSound *snd)
 {
 	LockMutex L(SOUNDMAN->lock);

stepmania/src/arch/Sound/RageSoundDriver_DSound.h

@@ -48,6 +48,7 @@ class RageSound_DSound: public RageSoundDriver
 	void StopMixing(RageSound *snd);		/* used by RageSound */
 	int GetPosition(const RageSound *snd) const;
 	void Update(float delta);
+	void VolumeChanged();
 
 public:
 	RageSound_DSound();

stepmania/src/arch/Sound/RageSoundDriver_DSound_Software.cpp

@@ -43,7 +43,6 @@ void RageSound_DSound_Software::MixerThread()
 
 	while(!shutdown) {
 		Sleep(10);
-
 		while(GetData())
 			;
 	}
@@ -179,9 +178,11 @@ RageSound_DSound_Software::~RageSound_DSound_Software()
 {
 	/* Signal the mixing thread to quit. */
 	shutdown = true;
-	LOG->Trace("Shutting down mixer thread ...");
+	LOG->Trace("Shutting down mixer thread %p ...", MixerThreadPtr);
+	LOG->Flush();
 	SDL_WaitThread(MixerThreadPtr, NULL);
 	LOG->Trace("Mixer thread shut down.");
+	LOG->Flush();
 
 	delete str_ds;
 }