diff --git a/reactos/sdk/include/psdk/wincodec.idl b/reactos/sdk/include/psdk/wincodec.idl
index 7216d07040a..d133b8ad6ef 100644
--- a/reactos/sdk/include/psdk/wincodec.idl
+++ b/reactos/sdk/include/psdk/wincodec.idl
@@ -168,6 +168,12 @@ typedef enum WICTiffCompressionOption {
     WICTIFFCOMPRESSIONOPTION_FORCE_DWORD = CODEC_FORCE_DWORD
 } WICTiffCompressionOption;
 
+typedef enum WICSectionAccessLevel {
+    WICSectionAccessLevelRead = 0x00000001,
+    WICSectionAccessLevelReadWrite = 0x00000003,
+    WICSectionAccessLevel_FORCE_DWORD = CODEC_FORCE_DWORD
+} WICSectionAccessLevel;
+
 typedef GUID WICPixelFormatGUID;
 typedef REFGUID REFWICPixelFormatGUID;
 
@@ -196,6 +202,7 @@ cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppPBGRA, 0x6fddc324,0x4e03,0x4bfe,0
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppRGB, 0xd98c6b95,0x3efe,0x47d6,0xbb,0x25,0xeb,0x17,0x48,0xab,0x0c,0xf1);")
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppRGBA, 0xf5c7ad2d,0x6a8d,0x43dd,0xa7,0xa8,0xa2,0x99,0x35,0x26,0x1a,0xe9);")
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppPRGBA, 0x3cc4a650,0xa527,0x4d37,0xa9,0x16,0x31,0x42,0xc7,0xeb,0xed,0xba);")
+cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppGrayFloat, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x11);")
 
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat48bppRGB, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x15);")
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat64bppRGBA, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x16);")
@@ -999,6 +1006,8 @@ interface IWICEnumMetadataItem : IUnknown
 }
 
 cpp_quote("HRESULT WINAPI WICConvertBitmapSource(REFWICPixelFormatGUID dstFormat, IWICBitmapSource *pISrc, IWICBitmapSource **ppIDst);")
+cpp_quote("HRESULT WINAPI WICCreateBitmapFromSection(UINT width, UINT height, REFWICPixelFormatGUID format, HANDLE section, UINT stride, UINT offset, IWICBitmap **bitmap);")
+cpp_quote("HRESULT WINAPI WICCreateBitmapFromSectionEx(UINT width, UINT height, REFWICPixelFormatGUID format, HANDLE section, UINT stride, UINT offset, WICSectionAccessLevel access, IWICBitmap **bitmap);")
 
 cpp_quote("DEFINE_GUID(CLSID_WICBmpDecoder, 0x6b462062,0x7cbf,0x400d,0x9f,0xdb,0x81,0x3d,0xd1,0x0f,0x27,0x78);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngDecoder, 0x389ea17b,0x5078,0x4cde,0xb6,0xef,0x25,0xc1,0x51,0x75,0xc7,0x51);")