Changed SoundTouch to use float samples, allowing SSE to be used.

Made the DPL2 decoder disabled by default.
Re-added the audio hack used by the Accurate VBeam emulation option.

Externals/soundtouch/STTypes.h

@@ -103,8 +103,8 @@ namespace soundtouch
         ///   However, if you still prefer to select the sample format here 
         ///   also in GNU environment, then please #undef the INTEGER_SAMPLE
         ///   and FLOAT_SAMPLE defines first as in comments above.
-        #define SOUNDTOUCH_INTEGER_SAMPLES     1    //< 16bit integer samples
+        //#define SOUNDTOUCH_INTEGER_SAMPLES     1    //< 16bit integer samples
-        //#define SOUNDTOUCH_FLOAT_SAMPLES       1    //< 32bit float samples
+        #define SOUNDTOUCH_FLOAT_SAMPLES       1    //< 32bit float samples
      
     #endif
 

Source/Core/AudioCommon/Src/OpenALStream.cpp

@@ -176,6 +176,7 @@ void OpenALStream::SoundLoop()
 
 	soundTouch.setChannels(2);
 	soundTouch.setSampleRate(ulFrequency);
+	soundTouch.setTempo(1.0);
 	soundTouch.setSetting(SETTING_USE_QUICKSEEK, 0);
 	soundTouch.setSetting(SETTING_USE_AA_FILTER, 0);
 	soundTouch.setSetting(SETTING_SEQUENCE_MS, 1);
@@ -197,7 +198,16 @@ void OpenALStream::SoundLoop()
 
 		numSamples = (numSamples > OAL_MAX_SAMPLES) ? OAL_MAX_SAMPLES : numSamples;
 		numSamples = m_mixer->Mix(realtimeBuffer, numSamples);
-		soundTouch.putSamples(realtimeBuffer, numSamples);
+
+		// Convert the samples from short to float
+		float dest[OAL_MAX_SAMPLES * 2 * 2 * OAL_MAX_BUFFERS];
+		for (u32 i = 0; i < numSamples; ++i)
+		{
+			dest[i * 2 + 0] = (float)realtimeBuffer[i * 2 + 0] / (1 << 16);
+			dest[i * 2 + 1] = (float)realtimeBuffer[i * 2 + 1] / (1 << 16);
+		}
+
+		soundTouch.putSamples(dest, numSamples);
 
 		if (iBuffersProcessed == iBuffersFilled)
 		{
@@ -241,16 +251,8 @@ void OpenALStream::SoundLoop()
 #else
 				if (surround_capable)
 				{
-					// Convert the samples from short to float for the dpl2 decoder
-					float dest[OAL_MAX_SAMPLES * 2 * 2 * OAL_MAX_BUFFERS];
-					for (u32 i = 0; i < nSamples; ++i)
-					{
-						dest[i * 2 + 0] = (float)sampleBuffer[i * 2 + 0] / (1<<16);
-						dest[i * 2 + 1] = (float)sampleBuffer[i * 2 + 1] / (1<<16);
-					}
-
 					float dpl2[OAL_MAX_SAMPLES * SIZE_FLOAT * SURROUND_CHANNELS * OAL_MAX_BUFFERS];
-					dpl2decode(dest, nSamples, dpl2);
+					dpl2decode(sampleBuffer, nSamples, dpl2);
 
 					alBufferData(uiBufferTemp[iBuffersFilled], AL_FORMAT_51CHN32, dpl2, nSamples * SIZE_FLOAT * SURROUND_CHANNELS, ulFrequency);
 					ALenum err = alGetError();
@@ -268,7 +270,18 @@ void OpenALStream::SoundLoop()
 #endif
 				if (!surround_capable)
 				{
-					alBufferData(uiBufferTemp[iBuffersFilled], AL_FORMAT_STEREO16, sampleBuffer, nSamples * 2 * 2, ulFrequency);
+#if defined(__APPLE__)
+					// Convert the samples from float to short
+					short stereo[OAL_MAX_SAMPLES * 2 * 2 * OAL_MAX_BUFFERS];
+					for (u32 i = 0; i < nSamples; ++i)
+					{
+						stereo[i * 2 + 0] = (short)((float)sampleBuffer[i * 2 + 0] * (1 << 16));
+						stereo[i * 2 + 1] = (short)((float)sampleBuffer[i * 2 + 1] * (1 << 16));
+					}
+					alBufferData(uiBufferTemp[iBuffersFilled], AL_FORMAT_STEREO16, stereo, nSamples * 2 * 2, ulFrequency);
+#else
+					alBufferData(uiBufferTemp[iBuffersFilled], AL_FORMAT_STEREO_FLOAT32, sampleBuffer, nSamples * 4 * 2, ulFrequency);
+#endif
 				}
 
 				alSourceQueueBuffers(uiSource, 1, &uiBufferTemp[iBuffersFilled]);

Source/Core/Core/Src/ConfigManager.cpp

@@ -369,7 +369,7 @@ void SConfig::LoadSettings()
 		ini.Get("Core", "Apploader",	&m_LocalCoreStartupParameter.m_strApploader);
 		ini.Get("Core", "EnableCheats",	&m_LocalCoreStartupParameter.bEnableCheats,				false);
 		ini.Get("Core", "SelectedLanguage", &m_LocalCoreStartupParameter.SelectedLanguage,		0);
-		ini.Get("Core", "DPL2Decoder",	&m_LocalCoreStartupParameter.bDPL2Decoder,	true);
+		ini.Get("Core", "DPL2Decoder",	&m_LocalCoreStartupParameter.bDPL2Decoder,	false);
 		ini.Get("Core", "Latency",		&m_LocalCoreStartupParameter.iLatency,		14);
 		ini.Get("Core", "MemcardA",		&m_strMemoryCardA);
 		ini.Get("Core", "MemcardB",		&m_strMemoryCardB);

Source/Core/Core/Src/CoreParameter.cpp

@@ -49,7 +49,7 @@ SCoreStartupParameter::SCoreStartupParameter()
   bEnableCheats(false),
   bMergeBlocks(false),
   bRunCompareServer(false), bRunCompareClient(false),
-  bDPL2Decoder(true), iLatency(14),
+  bDPL2Decoder(false), iLatency(14),
   bMMU(false), bMMUBAT(false), iTLBHack(0), bVBeam(false),
   bFastDiscSpeed(false),
   SelectedLanguage(0), bWii(false), bDisableWiimoteSpeaker(false),
@@ -85,7 +85,7 @@ void SCoreStartupParameter::LoadDefaults()
 	bMergeBlocks = false;
 	SelectedLanguage = 0;
 	bWii = false;
-	bDPL2Decoder = true;
+	bDPL2Decoder = false;
 	iLatency = 14;
 
 	iPosX = 100;

Source/Core/Core/Src/HW/SystemTimers.cpp

@@ -160,7 +160,8 @@ void DSPCallback(u64 userdata, int cyclesLate)
 
 void AudioDMACallback(u64 userdata, int cyclesLate)
 {
-	int period = CPU_CORE_CLOCK / (AudioInterface::GetAIDSampleRate() * 4 / 32);
+	int fields = SConfig::GetInstance().m_LocalCoreStartupParameter.bVBeam?2:1;
+	int period = CPU_CORE_CLOCK / (AudioInterface::GetAIDSampleRate() * 4 / 32 * fields);
 	DSP::UpdateAudioDMA();  // Push audio to speakers.
 	CoreTiming::ScheduleEvent(period - cyclesLate, et_AudioDMA);
 }

Source/Core/DolphinWX/Src/ConfigMain.cpp

@@ -366,6 +366,7 @@ void CConfigMain::InitializeGUIValues()
 	VolumeText->SetLabel(wxString::Format(wxT("%d %%"), ac_Config.m_Volume));
 	DSPThread->SetValue(startup_params.bDSPThread);
 	DumpAudio->SetValue(ac_Config.m_DumpAudio ? true : false);
+	DPL2Decoder->Enable(std::string(ac_Config.sBackend) == BACKEND_OPENAL);
 	DPL2Decoder->SetValue(startup_params.bDPL2Decoder);
 	LatencySlider->Enable(std::string(ac_Config.sBackend) == BACKEND_OPENAL);
 	LatencySlider->SetValue(startup_params.iLatency);