消灭Essgee中GameBoy/DMG的音视频GC

AxibugEmuOnline.Client/Assets/Plugins/Essgee.Unity/Emulation/Audio/DMGAudio.cs

@@ -296,6 +296,8 @@ namespace Essgee.Emulation.Audio
             sampleCycleCount = frameCycleCount = 0;
         }
 
+        //独立声明，不在函数内部
+        private bool[] channelEnableFlags = new bool[4];
         public void Step(int clockCyclesInStep)
         {
             if (!isSoundHwEnabled) return;
@@ -385,10 +387,25 @@ namespace Essgee.Emulation.Audio
                 //    new bool[] { !channel1ForceEnable, !channel2ForceEnable, !channel3ForceEnable, !channel4ForceEnable },
                 //    mixedSampleBuffer.ToArray());
 
+                //有GC
+                //EnqueueSamplesEventArgs eventArgs = EnqueueSamplesEventArgs.Create(
+                //    numChannels,
+                //    channelSampleBuffer,
+                //    new bool[] { !channel1ForceEnable, !channel2ForceEnable, !channel3ForceEnable, !channel4ForceEnable },
+                //    mixedSampleBuffer,
+                //    mixedSampleBuffer_writePos);
+
+
+                // 在函数中使用
+                channelEnableFlags[0] = !channel1ForceEnable;
+                channelEnableFlags[1] = !channel2ForceEnable;
+                channelEnableFlags[2] = !channel3ForceEnable;
+                channelEnableFlags[3] = !channel4ForceEnable;
+
                 EnqueueSamplesEventArgs eventArgs = EnqueueSamplesEventArgs.Create(
                     numChannels,
                     channelSampleBuffer,
-                    new bool[] { !channel1ForceEnable, !channel2ForceEnable, !channel3ForceEnable, !channel4ForceEnable },
+                    channelEnableFlags,
                     mixedSampleBuffer,
                     mixedSampleBuffer_writePos);
 

AxibugEmuOnline.Client/Assets/Plugins/Essgee.Unity/Emulation/Utilities.cs

@@ -44,7 +44,16 @@ namespace Essgee.Emulation
             buffer[address + 3] = 0xFF;
         }
 
-        public static void RGBCGBtoBGRA8888(int color, ref byte[] buffer, int address)
+        //public static void RGBCGBtoBGRA8888(int color, ref byte[] buffer, int address)
+        //{
+        //    /* https://byuu.net/video/color-emulation -- "LCD emulation: Game Boy Color" */
+        //    byte r = (byte)((color >> 0) & 0x1F), g = (byte)((color >> 5) & 0x1F), b = (byte)((color >> 10) & 0x1F);
+        //    buffer[address + 0] = (byte)(Math.Min(960, (r * 6) + (g * 4) + (b * 22)) >> 2);
+        //    buffer[address + 1] = (byte)(Math.Min(960, (g * 24) + (b * 8)) >> 2);
+        //    buffer[address + 2] = (byte)(Math.Min(960, (r * 26) + (g * 4) + (b * 2)) >> 2);
+        //    buffer[address + 3] = 0xFF;
+        //}
+        public static void RGBCGBtoBGRA8888(int color, ref byte* buffer, int address)
         {
             /* https://byuu.net/video/color-emulation -- "LCD emulation: Game Boy Color" */
             byte r = (byte)((color >> 0) & 0x1F), g = (byte)((color >> 5) & 0x1F), b = (byte)((color >> 10) & 0x1F);

AxibugEmuOnline.Client/Assets/Plugins/Essgee.Unity/Emulation/Video/Nintendo/CGBVideo.cs

@@ -346,7 +346,7 @@ namespace Essgee.Emulation.Video.Nintendo
             WriteColorToFramebuffer(c, ((y * displayActiveWidth) + (x % displayActiveWidth)) * 4);
         }
 
-        private void WriteColorToFramebuffer(ushort c, int address)
+        private unsafe void WriteColorToFramebuffer(ushort c, int address)
         {
             RGBCGBtoBGRA8888(c, ref outputFramebuffer, address);
         }

AxibugEmuOnline.Client/Assets/Plugins/Essgee.Unity/Emulation/Video/Nintendo/DMGVideo.cs

@@ -8,7 +8,7 @@ using static Essgee.Emulation.CPU.SM83;
 
 namespace Essgee.Emulation.Video.Nintendo
 {
-    public class DMGVideo : IVideo
+    public unsafe class DMGVideo : IVideo
     {
         protected const int displayActiveWidth = 160;
         protected const int displayActiveHeight = 144;
@@ -109,7 +109,48 @@ namespace Essgee.Emulation.Video.Nintendo
         protected byte[,] screenUsageFlags, screenUsageSpriteXCoords, screenUsageSpriteSlots;
 
         protected int cycleCount, cycleDotPause, currentScanline;
-        protected byte[] outputFramebuffer;
+        //protected byte[] outputFramebuffer;
+
+        #region //指针化 outputFramebuffer
+        byte[] outputFramebuffer_src;
+        protected GCHandle outputFramebuffer_handle;
+        public byte* outputFramebuffer;
+        public int outputFramebufferLength;
+        public bool outputFramebuffer_IsNull => outputFramebuffer == null;
+        public byte[] outputFramebuffer_set
+        {
+            set
+            {
+                outputFramebuffer_handle.ReleaseGCHandle();
+                outputFramebuffer_src = value;
+                outputFramebufferLength = value.Length;
+                outputFramebuffer_src.GetObjectPtr(ref outputFramebuffer_handle, ref outputFramebuffer);
+            }
+        }
+        #endregion
+
+
+        #region //指针化 outputFramebufferCopy
+        byte[] outputFramebufferCopy_src;
+        GCHandle outputFramebufferCopy_handle;
+        public byte* outputFramebufferCopy;
+        public int outputFramebufferCopyLength;
+        public bool outputFramebufferCopy_IsNull => outputFramebufferCopy == null;
+        private IntPtr outputFramebufferCopy_IntPtr;
+        public byte[] outputFramebufferCopy_set
+        {
+            set
+            {
+                outputFramebufferCopy_handle.ReleaseGCHandle();
+                outputFramebufferCopy_src = value;
+                outputFramebufferCopyLength = value.Length;
+                outputFramebufferCopy_src.GetObjectPtr(ref outputFramebufferCopy_handle, ref outputFramebufferCopy);
+                outputFramebufferCopy_IntPtr = outputFramebufferCopy_handle.AddrOfPinnedObject();
+            }
+        }
+        #endregion
+
+
 
         protected int clockCyclesPerLine;
 
@@ -247,7 +288,10 @@ namespace Essgee.Emulation.Video.Nintendo
             screenUsageFlags = new byte[displayActiveWidth, displayActiveHeight];
             screenUsageSpriteXCoords = new byte[displayActiveWidth, displayActiveHeight];
             screenUsageSpriteSlots = new byte[displayActiveWidth, displayActiveHeight];
-            outputFramebuffer = new byte[numDisplayPixels * 4];
+            //outputFramebuffer = new byte[numDisplayPixels * 4];
+            outputFramebuffer_set = new byte[numDisplayPixels * 4];
+
+            outputFramebufferCopy_set = new byte[numDisplayPixels * 4];
 
             for (var y = 0; y < displayActiveHeight; y++)
                 SetLine(y, 0xFF, 0xFF, 0xFF);
@@ -398,7 +442,8 @@ namespace Essgee.Emulation.Video.Nintendo
         }
 
 
-        GCHandle? lasyRenderHandle;
+        GCHandle? lastRenderHandle;
+
         protected virtual void EndHBlank()
         {
             /* End of scanline reached */
@@ -423,16 +468,25 @@ namespace Essgee.Emulation.Video.Nintendo
 
                 /* Submit screen for rendering */
 
-                // 固定数组，防止垃圾回收器移动它  
+                //// 固定数组，防止垃圾回收器移动它  
-                var bitmapcolorRect_handle = GCHandle.Alloc(outputFramebuffer.Clone() as byte[], GCHandleType.Pinned);
+                //var bitmapcolorRect_handle = GCHandle.Alloc(outputFramebuffer_src.Clone() as byte[], GCHandleType.Pinned);
-                // 获取数组的指针  
+                //// 获取数组的指针  
-                IntPtr mFrameDataPtr = bitmapcolorRect_handle.AddrOfPinnedObject();
+                //IntPtr mFrameDataPtr = bitmapcolorRect_handle.AddrOfPinnedObject();
+
+
+                for (int i = 0; i < outputFramebufferLength; i++)
+                {
+                    outputFramebufferCopy[i] = outputFramebuffer[i];
+                }
+                IntPtr mFrameDataPtr = outputFramebufferCopy_IntPtr;
+
                 var eventArgs = RenderScreenEventArgs.Create(displayActiveWidth, displayActiveHeight, mFrameDataPtr);
                 OnRenderScreen(eventArgs);
                 eventArgs.Release();
-                if (lasyRenderHandle != null)
+
-                    lasyRenderHandle.Value.Free();
+                //if (lastRenderHandle.HasValue)
-                lasyRenderHandle = bitmapcolorRect_handle;
+                //    lastRenderHandle.Value.Free();
+                //lastRenderHandle = bitmapcolorRect_handle;
 
                 //OnRenderScreen(new RenderScreenEventArgs(displayActiveWidth, displayActiveHeight, outputFramebuffer.Clone() as byte[]));
             }