PowerControl: Install custom resolutions (EDID) (experimental feature)

PowerControl/Controller.cs

@@ -69,6 +69,34 @@ namespace PowerControl
             rootMenu.VisibleChanged += delegate { updateOSD(); };
             contextMenu.Items.Add(new ToolStripSeparator());
 
+            if (Settings.Default.EnableExperimentalFeatures)
+            {
+                var installEDIDItem = contextMenu.Items.Add("Install &Resolutions");
+                installEDIDItem.Click += delegate { Helpers.AMD.EDID.SetEDID(Resources.CRU_SteamDeck); };
+                var replaceEDIDItem = contextMenu.Items.Add("Replace &Resolutions");
+                replaceEDIDItem.Click += delegate { Helpers.AMD.EDID.SetEDID(new byte[0]); Helpers.AMD.EDID.SetEDID(Resources.CRU_SteamDeck); };
+                var uninstallEDIDItem = contextMenu.Items.Add("Revert &Resolutions");
+                uninstallEDIDItem.Click += delegate { Helpers.AMD.EDID.SetEDID(new byte[0]); };
+                contextMenu.Opening += delegate
+                {
+                    if (ExternalHelpers.DisplayConfig.IsInternalConnected == true)
+                    {
+                        var edid = Helpers.AMD.EDID.GetEDID() ?? new byte[0];
+                        var edidInstalled = Resources.CRU_SteamDeck.SequenceEqual(edid);
+                        installEDIDItem.Visible = edid.Length <= 128;
+                        replaceEDIDItem.Visible = !edidInstalled && edid.Length > 128;
+                        uninstallEDIDItem.Visible = edid.Length > 128;
+                    }
+                    else
+                    {
+                        installEDIDItem.Visible = false;
+                        replaceEDIDItem.Visible = false;
+                        uninstallEDIDItem.Visible = false;
+                    }
+                };
+                contextMenu.Items.Add(new ToolStripSeparator());
+            }
+
             if (startupManager.IsAvailable)
             {
                 var startupItem = new ToolStripMenuItem("Run On Startup");

PowerControl/Helpers/AMD/ADL.cs

@@ -143,6 +143,30 @@ namespace PowerControl.Helpers.AMD
     }
     #endregion ADLDisplayInfo
 
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct ADLDisplayEDIDData
+    {
+        internal int iSize;
+        internal int iFlag;
+        internal int iEDIDSize;
+        internal int iBlockIndex;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)ADL.ADL_MAX_EDIDDATA_SIZE)]
+        internal byte[] cEDIDData;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
+        internal int[] iReserved;
+    };
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct ADLDisplayEDIDDataX2
+    {
+        internal int iSize;
+        internal int iFlag;
+        internal int iEDIDSize;
+        internal int iIgnored;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)2 * ADL.ADL_MAX_EDIDDATA_SIZE)]
+        internal byte[] cEDIDData;
+    };
+
     #region Radeon Image Sharpening
     [StructLayout(LayoutKind.Sequential)]
     internal struct ADL_RIS_SETTINGS
@@ -192,6 +216,8 @@ namespace PowerControl.Helpers.AMD
         internal const int ADL_MAX_GLSYNC_PORT_LEDS = 8;
         /// <summary> Maximum number of ADLMOdes for the adapter </summary>
         internal const int ADL_MAX_NUM_DISPLAYMODES = 1024;
+        internal const int ADL_MAX_EDIDDATA_SIZE = 256;
+        internal const int ADL_MAX_EDID_EXTENSION_BLOCKS = 3;
 
         internal const int ADL_DISPLAY_DISPLAYINFO_DISPLAYCONNECTED = 0x00000001;
 
@@ -265,6 +291,12 @@ namespace PowerControl.Helpers.AMD
 
         [DllImport(Atiadlxx_FileName)]
         internal static extern int ADL2_RIS_Settings_Set(IntPtr context, int adapterIndex, ADL_RIS_SETTINGS settings, ADL_RIS_NOTFICATION_REASON reason);
+
+        [DllImport(Atiadlxx_FileName)]
+        internal static extern int ADL2_Display_EdidData_Get(IntPtr context, int adapterIndex, int displayIndex, ref ADLDisplayEDIDData edidData);
+
+        [DllImport(Atiadlxx_FileName)]
+        internal static extern int ADL2_Display_EdidData_Set(IntPtr context, int adapterIndex, int displayIndex, ref ADLDisplayEDIDDataX2 edidData);
         #endregion DLLImport
 
         #region ADL_Main_Memory_Alloc

PowerControl/Helpers/AMD/EDID.cs

@@ -0,0 +1,57 @@
+using System.Linq;
+using System.Runtime.InteropServices;
+
+namespace PowerControl.Helpers.AMD
+{
+    internal class EDID
+    {
+        internal static byte[]? GetEDID(int displayIndex = ADL.ADL_DEFAULT_DISPLAY)
+        {
+            return ADLContext.WithSafe((context) =>
+            {
+                byte[] edid = new byte[0];
+
+                for (int block = 0; block < ADL.ADL_MAX_EDID_EXTENSION_BLOCKS; ++block)
+                {
+                    ADLDisplayEDIDData displayEdidData = new ADLDisplayEDIDData()
+                    {
+                        iSize = Marshal.SizeOf<ADLDisplayEDIDData>(),
+                        iBlockIndex = block,
+                    };
+
+                    int res = ADL.ADL2_Display_EdidData_Get(context.Context, ADL.ADL_DEFAULT_ADAPTER, ADL.ADL_DEFAULT_DISPLAY, ref displayEdidData);
+                    if (res != 0)
+                        break;
+
+                    var blockBytes = displayEdidData.cEDIDData.Take(displayEdidData.iEDIDSize);
+                    edid = edid.Concat(blockBytes).ToArray();
+                }
+
+                return edid;
+            });
+        }
+
+        internal static bool? SetEDID(byte[] value, int displayIndex = ADL.ADL_DEFAULT_DISPLAY)
+        {
+            return ADLContext.WithSafe((context) =>
+            {
+                var bytes = new byte[ADL.ADL_MAX_EDIDDATA_SIZE * 2];
+                value.CopyTo(bytes, 0);
+
+                var blockData = new ADLDisplayEDIDDataX2()
+                {
+                    // TODO: Hack to send a full EDID at once
+                    iSize = Marshal.SizeOf<ADLDisplayEDIDData>(),
+                    cEDIDData = bytes,
+                    iEDIDSize = value.Length,
+                };
+
+                int res = ADL.ADL2_Display_EdidData_Set(context.Context,
+                    ADL.ADL_DEFAULT_ADAPTER, ADL.ADL_DEFAULT_DISPLAY,
+                    ref blockData);
+
+                return res == 0;
+            });
+        }
+    }
+}

PowerControl/Resources.Designer.cs

@@ -60,6 +60,16 @@ namespace PowerControl {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized resource of type System.Byte[].
+        /// </summary>
+        internal static byte[] CRU_SteamDeck {
+            get {
+                object obj = ResourceManager.GetObject("CRU_SteamDeck", resourceCulture);
+                return ((byte[])(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Icon similar to (Icon).
         /// </summary>

PowerControl/Resources.resx

@@ -118,6 +118,9 @@
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <data name="CRU_SteamDeck" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>Resources\CRU_SteamDeck.bin;System.Byte[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </data>
   <data name="traffic-light-outline_light" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>Resources\traffic-light-outline_light.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>

RELEASE.md

@@ -9,6 +9,7 @@
 
 ## 0.6.x
 
+- PowerControl: Install custom resolutions (EDID) (experimental feature)
 - SteamController: Add `X360: No Touchpads` profile
 - All: Show `Missing RTSS` button to install RTSS
 - PowerControl: Retain FPS Limit (proportion) on refresh rate change