Added some members

binding/Binding/SKStream.cs

@@ -57,11 +57,16 @@ namespace SkiaSharp
 		{
 			unsafe {
 				fixed (byte *b = &buffer [0]) {
-					return (int)SkiaApi.sk_stream_read (Handle, (IntPtr) b, (IntPtr)size);
+					return Read ((IntPtr) b, size);
 				}
 			}
 		}
 
+		public int Read (IntPtr buffer, int size)
+		{
+			return (int)SkiaApi.sk_stream_read (Handle, buffer, (IntPtr)size);
+		}
+
 		public int Skip (int size)
 		{
 			return (int)SkiaApi.sk_stream_skip (Handle, (IntPtr)size);
@@ -81,6 +86,11 @@ namespace SkiaSharp
 		{
 			return SkiaApi.sk_stream_move (Handle, offset);
 		}
+		
+		public IntPtr GetMemoryBase ()
+		{
+			return SkiaApi.sk_stream_get_memory_base (Handle);
+		}
 
 		public bool HasPosition {
 			get {

binding/Binding/SKTypeface.cs

@@ -137,6 +137,8 @@ namespace SkiaSharp
 		public SKFontStyleSlant FontSlant => SkiaApi.sk_typeface_get_font_slant (Handle);
 		public SKTypefaceStyle Style => SkiaApi.sk_typeface_get_style (Handle);
 
+		public int UnitsPerEm => SkiaApi.sk_typeface_get_units_per_em(Handle);
+
 		public UInt32[] GetTableTags()
 		{
 			int tableCount = SkiaApi.sk_typeface_count_tables(Handle);
@@ -171,6 +173,16 @@ namespace SkiaSharp
 			return true;
 		}
 
+		public SKStreamAsset OpenStream()
+		{
+			int ttcIndex;
+			return OpenStream(out ttcIndex);
+		}
+
+		public SKStreamAsset OpenStream(out int ttcIndex)
+		{
+			return GetObject<SKStreamAssetImplementation>(SkiaApi.sk_typeface_open_stream(Handle, out ttcIndex));
+		}
 	}
 }
 

binding/Binding/SkiaApi.cs

@@ -957,6 +957,10 @@ namespace SkiaSharp
 		public extern static SKFontStyleSlant sk_typeface_get_font_slant(sk_typeface_t typeface);
 		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
 		public extern static SKTypefaceStyle sk_typeface_get_style(sk_typeface_t typeface);
+		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
+		public extern static sk_stream_assetstream_t sk_typeface_open_stream(sk_typeface_t typeface, out int ttcIndex);
+		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
+		public extern static int sk_typeface_get_units_per_em(sk_typeface_t typeface);
 
 		// FontMgr
 		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
@@ -1020,6 +1024,8 @@ namespace SkiaSharp
 		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
 		public extern static IntPtr sk_stream_get_length(sk_stream_t stream);
 		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
+		public extern static IntPtr sk_stream_get_memory_base(sk_stream_t cstream);
+		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
 		public extern static sk_stream_filestream_t sk_filestream_new([MarshalAs(UnmanagedType.LPStr)] string path);
 		[DllImport(SKIA, CallingConvention = CallingConvention.Cdecl)]
 		public extern static sk_stream_memorystream_t sk_memorystream_new();

externals/skia

@@ -1 +1 @@
-Subproject commit b65d8510ebb7b160ab2ba4d10170c04651d516dd
+Subproject commit e989b31f4a42ffac94e2b8acbea5a935d6d65cbd