psphawk: sound, except it doesn't work. i will figure it out later

BizHawk.Emulation/Consoles/Sony/PSP/PPSSPPDll.cs

@@ -25,5 +25,8 @@ namespace BizHawk.Emulation.Consoles.Sony.PSP
 
 		[DllImport(dd, CallingConvention = cc)]
 		public static extern void advance();
+
+		[DllImport(dd, CallingConvention = cc)]
+		public static extern int mixsound(short[] buff, int nsamp);
 	}
 }

BizHawk.Emulation/Consoles/Sony/PSP/PSP.cs

@@ -90,7 +90,12 @@ namespace BizHawk.Emulation.Consoles.Sony.PSP
 		public void FrameAdvance(bool render, bool rendersound = true)
 		{
 			PPSSPPDll.advance();
+			// problem 1: audio can be 48khz, if a particular core parameter is set.  we're not accounting for that.
+			// problem 2: we seem to be getting approximately the right amount of output, but with
+			// a lot of jitter on the per-frame buffer size
+			nsampavail = PPSSPPDll.mixsound(audiobuffer, audiobuffer.Length / 2);
 			LogFlush();
+			//Console.WriteLine("Audio Service: {0}", nsampavail);
 		}
 
 		public int Frame
@@ -184,11 +189,12 @@ namespace BizHawk.Emulation.Consoles.Sony.PSP
 		public int BufferHeight { get { return screenheight; } }
 		public int BackgroundColor { get { return unchecked((int)0xff000000); } }
 
-		readonly short[] audiobuffer = new short[735 * 2];
+		readonly short[] audiobuffer = new short[2048 * 2];
+		int nsampavail = 0;
 		public void GetSamples(out short[] samples, out int nsamp)
 		{			
-			samples = audiobuffer;	
-			nsamp = 735;	
+			samples = audiobuffer;
+			nsamp = nsampavail;
 		}
 		public void DiscardSamples()
 		{

ppsspp/Core/PSPMixer.cpp

@@ -27,7 +27,7 @@
 int PSPMixer::Mix(short *stereoout, int numSamples)
 {
 	int numFrames = __AudioMix(stereoout, numSamples);
-#ifdef _WIN32
+#if 0 //def _WIN32
 	if (numFrames < numSamples) {
 		// Our dsound backend will not stop playing, let's just feed it zeroes if we miss data.
 		memset(stereoout + 2 * 2 * numFrames, 0, 2 * 2 * (numSamples - numFrames));

ppsspp/bizhawk/Headless.cpp

@@ -167,7 +167,7 @@ BZEXPORT int BZAPI init(const char *fn, void (BZAPI* logcallback)(char, const ch
 	CoreParameter coreParameter;
 	coreParameter.cpuCore = CPU_JIT;
 	coreParameter.gpuCore = GPU_GLES;
-	coreParameter.enableSound = false;
+	coreParameter.enableSound = true;
 	coreParameter.fileToStart = fn;
 	coreParameter.mountIso = "";
 	coreParameter.startPaused = true;
@@ -182,7 +182,7 @@ BZEXPORT int BZAPI init(const char *fn, void (BZAPI* logcallback)(char, const ch
 	coreParameter.pixelHeight = 272;
 	coreParameter.unthrottle = true;
 
-	g_Config.bEnableSound = false;
+	g_Config.bEnableSound = true;
 	g_Config.bFirstRun = false;
 	g_Config.bIgnoreBadMemAccess = true;
 	// Never report from tests.
@@ -240,6 +240,11 @@ BZEXPORT void BZAPI die()
 	logger = NULL;
 }
 
+BZEXPORT int BZAPI mixsound(short *buff, int nsamp)
+{
+	return headlessHost->SendSound(buff, nsamp);
+}
+
 BZEXPORT void BZAPI advance()
 {
 	coreState = CORE_RUNNING;

ppsspp/bizhawk/WindowsHeadlessHost.cpp

@@ -69,6 +69,25 @@ void SetVSync(int value)
 		wglSwapIntervalEXT(value);
 }
 
+void WindowsHeadlessHost::InitSound(PMixer *mixer)
+{
+	gmixer = mixer;
+}
+void WindowsHeadlessHost::UpdateSound()
+{
+}
+void WindowsHeadlessHost::ShutdownSound()
+{
+	gmixer = NULL;
+}
+
+int WindowsHeadlessHost::SendSound(short *buff, int n)
+{
+	if (!gmixer)
+		return 0;
+	return gmixer->Mix(buff, n);
+}
+
 // TODO: also fix up GetSysDirectories
 void WindowsHeadlessHost::LoadNativeAssets()
 {

ppsspp/bizhawk/WindowsHeadlessHost.h

@@ -38,10 +38,18 @@ public:
 	virtual void SetComparisonScreenshot(const std::string &filename);
 	virtual void SendBackBuffer(void *dest);
 
+	virtual void WindowsHeadlessHost::InitSound(PMixer *mixer);
+	virtual void WindowsHeadlessHost::UpdateSound();
+	virtual void WindowsHeadlessHost::ShutdownSound();
+
+	virtual int SendSound(short *buff, int n);
+
 private:
 	bool ResizeGL();
 	void LoadNativeAssets();
 
+	PMixer *gmixer;
+
 	HWND hWnd;
 	HDC hDC;
 	HGLRC hRC;