pull in latest sameboy master, add stub camera pixel callback to prevent nondeterminism, wire disabling joypad bounce as a sync setting, various cleanup

src/BizHawk.Emulation.Cores/Consoles/Nintendo/SameBoy/LibSameBoy.cs

@@ -42,7 +42,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Sameboy
 		}
 
 		[BizImport(cc)]
-		public abstract IntPtr sameboy_create(byte[] romdata, int romlength, byte[] biosdata, int bioslength, Sameboy.SameboySyncSettings.GBModel model, bool realtime);
+		public abstract IntPtr sameboy_create(byte[] romdata, int romlength, byte[] biosdata, int bioslength, Sameboy.SameboySyncSettings.GBModel model, bool realtime, bool nobounce);
 
 		[BizImport(cc)]
 		public abstract void sameboy_destroy(IntPtr core);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/SameBoy/SameBoy.ISettable.cs

@@ -151,11 +151,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.Sameboy
 				_customPal = new[] { 0x00ffffff, 0x00aaaaaa, 0x00555555, 0x00000000, 0x00ffffff, };
 			}
 
-			public SameboySettings Clone() => MemberwiseClone() as SameboySettings;
+			public SameboySettings Clone()
+				=> (SameboySettings)MemberwiseClone();
 
-			public int[] GetCustomPalette() => _customPal.Clone() as int[];
+			public int[] GetCustomPalette() 
+				=> (int[])_customPal.Clone();
 
-			public void SetCustomPalette(int[] pal) => _customPal = pal.Clone() as int[];
+			public void SetCustomPalette(int[] pal)
+				=> _customPal = (int[])pal.Clone();
 		}
 
 		public class SameboySyncSettings
@@ -210,11 +213,19 @@ namespace BizHawk.Emulation.Cores.Nintendo.Sameboy
 			[DefaultValue(0)]
 			public int RTCDivisorOffset { get; set; }
 
-			public SameboySyncSettings() => SettingsUtil.SetDefaultValues(this);
+			[DisplayName("Disable Joypad Bounce")]
+			[Description("Disables emulation of the bounce from a physical joypad.")]
+			[DefaultValue(true)]
+			public bool NoJoypadBounce { get; set; }
 
-			public SameboySyncSettings Clone() => MemberwiseClone() as SameboySyncSettings;
+			public SameboySyncSettings()
+				=> SettingsUtil.SetDefaultValues(this);
 
-			public static bool NeedsReboot(SameboySyncSettings x, SameboySyncSettings y) => !DeepEquality.DeepEquals(x, y);
+			public SameboySyncSettings Clone()
+				=> (SameboySyncSettings)MemberwiseClone();
+
+			public static bool NeedsReboot(SameboySyncSettings x, SameboySyncSettings y)
+				=> !DeepEquality.DeepEquals(x, y);
 		}
 	}
 }

src/BizHawk.Emulation.Cores/Consoles/Nintendo/SameBoy/SameBoy.cs

@@ -12,7 +12,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Sameboy
 	/// <summary>
 	/// a gameboy/gameboy color emulator wrapped around native C libsameboy
 	/// </summary>
-	[PortedCore(CoreNames.Sameboy, "LIJI32", "0.14.7", "https://github.com/LIJI32/SameBoy")]
+	[PortedCore(CoreNames.Sameboy, "LIJI32", "0.15.1", "https://github.com/LIJI32/SameBoy")]
 	[ServiceNotApplicable(new[] { typeof(IDriveLight) })]
 	public partial class Sameboy : ICycleTiming, IInputPollable, ILinkable, IRomInfo, IBoardInfo, IGameboyCommon
 	{
@@ -84,7 +84,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Sameboy
 				DeterministicEmulation = true;
 			}
 
-			SameboyState = LibSameboy.sameboy_create(file, file.Length, bios, bios.Length, model, realtime);
+			SameboyState = LibSameboy.sameboy_create(file, file.Length, bios, bios.Length, model, realtime, _syncSettings.NoJoypadBounce);
 
 			InitMemoryDomains();
 			InitMemoryCallbacks();

submodules/sameboy/BizInterface.c

@@ -29,7 +29,6 @@ typedef struct
 	GB_gameboy_t gb;
 	blip_t* blip_l;
 	blip_t* blip_r;
-	GB_sample_t sampleBuf[1024 * 8];
 	GB_sample_t sampleLatch;
 	u32 nsamps;
 	u32 vbuf[256 * 224];
@@ -57,8 +56,19 @@ static u8 PeekIO(biz_t* biz, u8 addr)
 static void sample_cb(GB_gameboy_t *gb, GB_sample_t* sample)
 {
 	biz_t* biz = (biz_t*)gb;
-	biz->sampleBuf[biz->nsamps].left = sample->left;
-	biz->sampleBuf[biz->nsamps].right = sample->right;
+
+	if (biz->sampleLatch.left != sample->left)
+	{
+		blip_add_delta(biz->blip_l, biz->nsamps, biz->sampleLatch.left - sample->left);
+		biz->sampleLatch.left = sample->left;
+	}
+
+	if (biz->sampleLatch.right != sample->right)
+	{
+		blip_add_delta(biz->blip_r, biz->nsamps, biz->sampleLatch.right - sample->right);
+		biz->sampleLatch.right = sample->right;
+	}
+
 	biz->nsamps++;
 }
 
@@ -72,6 +82,12 @@ static void vblank_cb(GB_gameboy_t *gb, GB_vblank_type_t type)
 	((biz_t*)gb)->vblank_occured = true;
 }
 
+static u8 camera_pixel_cb(GB_gameboy_t *gb, u8 x, u8 y)
+{
+	// stub for now (also needed for determinism)
+	return 0;
+}
+
 static u8 ReadCallbackRelay(GB_gameboy_t* gb, u16 addr, u8 data)
 {
 	((biz_t*)gb)->read_cb(addr);
@@ -111,7 +127,7 @@ static void ScanlineCallbackRelay(GB_gameboy_t* gb, u8 line)
 	}
 }
 
-EXPORT biz_t* sameboy_create(u8* romdata, u32 romlen, u8* biosdata, u32 bioslen, GB_model_t model, bool realtime)
+EXPORT biz_t* sameboy_create(u8* romdata, u32 romlen, u8* biosdata, u32 bioslen, GB_model_t model, bool realtime, bool nobounce)
 {
 	biz_t* biz = calloc(1, sizeof (biz_t));
 	GB_random_seed(0);
@@ -122,7 +138,10 @@ EXPORT biz_t* sameboy_create(u8* romdata, u32 romlen, u8* biosdata, u32 bioslen,
 	GB_apu_set_sample_callback(&biz->gb, sample_cb);
 	GB_set_rgb_encode_callback(&biz->gb, rgb_cb);
 	GB_set_vblank_callback(&biz->gb, vblank_cb);
+	GB_set_camera_get_pixel_callback(&biz->gb, camera_pixel_cb);
+	GB_set_pixels_output(&biz->gb, biz->vbuf);
 	GB_set_rtc_mode(&biz->gb, realtime ? GB_RTC_MODE_SYNC_TO_HOST : GB_RTC_MODE_ACCURATE);
+	GB_set_emulate_joypad_bouncing(&biz->gb, !nobounce);
 	GB_set_allow_illegal_inputs(&biz->gb, true);
 	biz->blip_l = blip_new(1024);
 	biz->blip_r = blip_new(1024);
@@ -156,7 +175,6 @@ EXPORT void sameboy_frameadvance(biz_t* biz, GB_key_mask_t keys, u16 x, u16 y, s
 	{
 		GB_set_accelerometer_values(&biz->gb, FromRawToG(x), FromRawToG(y));
 	}
-	GB_set_pixels_output(&biz->gb, biz->vbuf);
 	GB_set_border_mode(&biz->gb, border ? GB_BORDER_ALWAYS : GB_BORDER_NEVER);
 	GB_set_rendering_disabled(&biz->gb, !render);
 
@@ -182,20 +200,6 @@ EXPORT void sameboy_frameadvance(biz_t* biz, GB_key_mask_t keys, u16 x, u16 y, s
 	}
 	while (!biz->vblank_occured && cycles < 35112);
 
-	for (u32 i = 0; i < biz->nsamps; i++)
-	{
-		if (biz->sampleLatch.left != biz->sampleBuf[i].left)
-		{
-			blip_add_delta(biz->blip_l, i, biz->sampleLatch.left - biz->sampleBuf[i].left);
-			biz->sampleLatch.left = biz->sampleBuf[i].left;
-		}
-		if (biz->sampleLatch.right != biz->sampleBuf[i].right)
-		{
-			blip_add_delta(biz->blip_r, i, biz->sampleLatch.right - biz->sampleBuf[i].right);
-			biz->sampleLatch.right = biz->sampleBuf[i].right;
-		}
-	}
-
 	blip_end_frame(biz->blip_l, biz->nsamps);
 	blip_end_frame(biz->blip_r, biz->nsamps);
 	biz->nsamps = 0;

submodules/sameboy/libsameboy

@@ -1 +1 @@
-Subproject commit 1b38e8c9321522d8211c834a548d55fb6e4c79cc
+Subproject commit 03f4f03661d10a366c2302a4299362878d1aea91