1 files changed, 103 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Nvdec/CdmaProcessor.cs b/Ryujinx.Graphics.Nvdec/CdmaProcessor.cs
new file mode 100644
index 00000000..c54a95f9
--- /dev/null
+++ b/Ryujinx.Graphics.Nvdec/CdmaProcessor.cs
@@ -0,0 +1,103 @@
+using Ryujinx.Graphics.Gpu;
+using Ryujinx.Graphics.VDec;
+using Ryujinx.Graphics.Vic;
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics
+{
+    public class CdmaProcessor
+    {
+        private const int MethSetMethod = 0x10;
+        private const int MethSetData   = 0x11;
+
+        private readonly VideoDecoder _videoDecoder;
+        private readonly VideoImageComposer _videoImageComposer;
+
+        public CdmaProcessor()
+        {
+            _videoDecoder = new VideoDecoder();
+            _videoImageComposer = new VideoImageComposer(_videoDecoder);
+        }
+
+        public void PushCommands(GpuContext gpu, int[] cmdBuffer)
+        {
+            List<ChCommand> commands = new List<ChCommand>();
+
+            ChClassId currentClass = 0;
+
+            for (int index = 0; index < cmdBuffer.Length; index++)
+            {
+                int cmd = cmdBuffer[index];
+
+                int value        = (cmd >> 0)  & 0xffff;
+                int methodOffset = (cmd >> 16) & 0xfff;
+
+                ChSubmissionMode submissionMode = (ChSubmissionMode)((cmd >> 28) & 0xf);
+
+                switch (submissionMode)
+                {
+                    case ChSubmissionMode.SetClass: currentClass = (ChClassId)(value >> 6); break;
+
+                    case ChSubmissionMode.Incrementing:
+                    {
+                        int count = value;
+
+                        for (int argIdx = 0; argIdx < count; argIdx++)
+                        {
+                            int argument = cmdBuffer[++index];
+
+                            commands.Add(new ChCommand(currentClass, methodOffset + argIdx, argument));
+                        }
+
+                        break;
+                    }
+
+                    case ChSubmissionMode.NonIncrementing:
+                    {
+                        int count = value;
+
+                        int[] arguments = new int[count];
+
+                        for (int argIdx = 0; argIdx < count; argIdx++)
+                        {
+                            arguments[argIdx] = cmdBuffer[++index];
+                        }
+
+                        commands.Add(new ChCommand(currentClass, methodOffset, arguments));
+
+                        break;
+                    }
+                }
+            }
+
+            ProcessCommands(gpu, commands.ToArray());
+        }
+
+        private void ProcessCommands(GpuContext gpu, ChCommand[] commands)
+        {
+            int methodOffset = 0;
+
+            foreach (ChCommand command in commands)
+            {
+                switch (command.MethodOffset)
+                {
+                    case MethSetMethod: methodOffset = command.Arguments[0]; break;
+
+                    case MethSetData:
+                    {
+                        if (command.ClassId == ChClassId.NvDec)
+                        {
+                            _videoDecoder.Process(gpu, methodOffset, command.Arguments);
+                        }
+                        else if (command.ClassId == ChClassId.GraphicsVic)
+                        {
+                            _videoImageComposer.Process(gpu, methodOffset, command.Arguments);
+                        }
+
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+\ No newline at end of file