add possibility to get a reference to the raw data of PixelGrid

examples/lang_cs/lang_cs.csproj

@@ -12,16 +12,4 @@
         <ProjectReference Include="..\..\servicepoint2-binding-cs\ServicePoint2\ServicePoint2.csproj"/>
     </ItemGroup>
 
-    <ItemGroup Condition="'$(Configuration)'=='Debug'">
-        <Content Include="..\..\target\debug\libservicepoint2.so" CopyToOutputDirectory="Always">
-            <Link>libservicepoint2.so</Link>
-        </Content>
-    </ItemGroup>
-
-    <ItemGroup Condition="'$(Configuration)'=='Release'">
-        <Content Include="..\..\target\release\libservicepoint2.so" CopyToOutputDirectory="Always">
-            <Link>libservicepoint2.so</Link>
-        </Content>
-    </ItemGroup>
-
 </Project>

servicepoint2-binding-cs/ServicePoint2/BindGen/ServicePoint2.g.cs

@@ -192,6 +192,10 @@ namespace ServicePoint2.BindGen
         [DllImport(__DllName, EntryPoint = "sp2_pixel_grid_height", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
         public static extern nuint sp2_pixel_grid_height(PixelGrid* @this);
 
+        /// <summary>Gets a reference to the data of the `PixelGrid` instance.</summary>
+        [DllImport(__DllName, EntryPoint = "sp2_pixel_grid_data_ref", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
+        public static extern byte* sp2_pixel_grid_data_ref(PixelGrid* @this);
+
 
     }
 

servicepoint2-binding-cs/ServicePoint2/ByteGrid.cs

@@ -1,3 +1,4 @@
+using System.Text;
 using ServicePoint2.BindGen;
 
 namespace ServicePoint2;
@@ -50,6 +51,36 @@ public sealed class ByteGrid : Sp2NativeInstance<BindGen.ByteGrid>
         }
     }
 
+    public string this[int y]
+    {
+        set
+        {
+            var width = Width;
+            ArgumentOutOfRangeException.ThrowIfGreaterThan(value.Length, width);
+
+            var x = 0;
+            for (; x < value.Length; x++)
+                this[x, y] = (byte)value[x];
+
+            for (; x < width; x++)
+                this[x, y] = 0;
+        }
+
+        get
+        {
+            var sb = new StringBuilder();
+            for (int x = 0; x < Width; x++)
+            {
+                var val = this[x, y];
+                if (val == 0)
+                    break;
+                sb.Append((char)val);
+            }
+
+            return sb.ToString();
+        }
+    }
+
     public void Fill(byte value)
     {
         unsafe

servicepoint2-binding-cs/ServicePoint2/PixelGrid.cs

@@ -80,6 +80,18 @@ public sealed class PixelGrid : Sp2NativeInstance<BindGen.PixelGrid>
         }
     }
 
+    public Span<byte> Data
+    {
+        get
+        {
+            unsafe
+            {
+                var ptr = NativeMethods.sp2_pixel_grid_data_ref(Instance);
+                return new Span<byte>(ptr, Width * Height / 8);
+            }
+        }
+    }
+
     private unsafe PixelGrid(BindGen.PixelGrid* instance) : base(instance)
     {
     }

servicepoint2-binding-cs/ServicePoint2/ServicePoint2.csproj

@@ -7,4 +7,16 @@
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
 
+    <ItemGroup Condition="'$(Configuration)'=='Debug'">
+        <Content Include="..\..\target\debug\libservicepoint2.so" CopyToOutputDirectory="Always">
+            <Link>libservicepoint2.so</Link>
+        </Content>
+    </ItemGroup>
+
+    <ItemGroup Condition="'$(Configuration)'=='Release'">
+        <Content Include="..\..\target\release\libservicepoint2.so" CopyToOutputDirectory="Always">
+            <Link>libservicepoint2.so</Link>
+        </Content>
+    </ItemGroup>
+
 </Project>

servicepoint2/src/bit_vec.rs

@@ -75,6 +75,10 @@ impl BitVec {
         self.data.len() * 8
     }
 
+    pub fn data_ref(&self) -> &[u8] {
+        &*self.data
+    }
+
     fn get_indexes(&self, index: usize) -> (usize, u8) {
         let byte_index = index / 8;
         let bit_in_byte_index = 7 - index % 8;
@@ -160,7 +164,7 @@ pub mod c_api {
 
     /// Gets the length of the `BitVec` in bits.
     #[no_mangle]
-    pub unsafe extern "C" fn sp2_bit_vec_len(this: *const BitVec) -> usize{
+    pub unsafe extern "C" fn sp2_bit_vec_len(this: *const BitVec) -> usize {
         (*this).len()
     }
 }

servicepoint2/src/pixel_grid.rs

@@ -76,6 +76,10 @@ impl PixelGrid {
     pub fn fill(&mut self, value: bool) {
         self.bit_vec.fill(value);
     }
+
+    pub fn data_ref(&self) -> &[u8] {
+        self.bit_vec.data_ref()
+    }
 }
 
 impl Into<Vec<u8>> for PixelGrid {
@@ -148,4 +152,11 @@ pub mod c_api
     pub unsafe extern "C" fn sp2_pixel_grid_height(this: *const PixelGrid) -> usize {
         (*this).height
     }
+
+    /// Gets a reference to the data of the `PixelGrid` instance.
+    #[no_mangle]
+    pub unsafe extern "C" fn sp2_pixel_grid_data_ref(this: *const PixelGrid) -> *const u8 {
+        // TODO: also return length
+        (*this).data_ref().as_ptr_range().start
+    }
 }