feat: CameraService camera image capture

Add GSS2.FrameDecoders project for image decoding realizations Add IFrameDecoder interface and FrameDecoderHelper class Add CameraService.CaptureImage method
2025-12-18 09:26:00 +03:00
parent 650fd03bfe
commit 4de442f51f
6 changed files with 208 additions and 7 deletions
@@ -0,0 +1,63 @@
+using GSS2.FrameDecoders;
+
+using LibCameraSharp;
+
+public static class FrameDecoderHelper
+{
+    private static readonly IReadOnlyList<IFrameDecoder> _decoders;
+
+    static FrameDecoderHelper()
+    {
+        _decoders = LoadDecoders();
+    }
+
+    private static IReadOnlyList<IFrameDecoder> LoadDecoders()
+    {
+        var decoderInterface = typeof(IFrameDecoder);
+        var assembly = decoderInterface.Assembly;
+
+        var decoders = assembly
+            .GetTypes()
+            .Where(t =>
+                !t.IsAbstract &&
+                !t.IsInterface &&
+                decoderInterface.IsAssignableFrom(t))
+            .Select(CreateDecoderInstance)
+            .Where(d => d is not null)
+            .Cast<IFrameDecoder>()
+            .ToList();
+
+        return decoders;
+    }
+    private static IFrameDecoder? CreateDecoderInstance(Type type)
+    {
+        if (type.GetConstructor(Type.EmptyTypes) is null)
+            return null;
+
+        try
+        {
+            return (IFrameDecoder?)Activator.CreateInstance(type);
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    public static IFrameDecoder? FindDecoder(
+        uint fourcc,
+        ulong modifier,
+        ColorSpace.PrimariesEnum primariesEnum,
+        ColorSpace.TransferFunctionEnum transferFunctionEnum,
+        ColorSpace.YcbcrEncodingEnum ycbcrEncodingEnum,
+        ColorSpace.RangeEnum rangeEnum)
+    {
+        return _decoders.FirstOrDefault(d =>
+            d.Fourcc == fourcc &&
+            d.Modifier == modifier &&
+            d.PrimariesEnum == primariesEnum &&
+            d.TransferFunctionEnum == transferFunctionEnum &&
+            d.YcbcrEncodingEnum == ycbcrEncodingEnum &&
+            d.RangeEnum == rangeEnum);
+    }
+}
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="FFmpeg.AutoGen" Version="7.1.1" />
+    <PackageReference Include="OpenCvSharp4" Version="4.11.0.20250507" />
+    <PackageReference Include="LibCameraSharp" Version="0.5.2-20251028" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,17 @@
+using LibCameraSharp;
+
+using OpenCvSharp;
+
+namespace GSS2.FrameDecoders;
+
+public interface IFrameDecoder
+{
+    public uint Fourcc { get; }
+    public ulong Modifier { get; }
+    public ColorSpace.PrimariesEnum PrimariesEnum { get; }
+    public ColorSpace.TransferFunctionEnum TransferFunctionEnum { get; }
+    public ColorSpace.YcbcrEncodingEnum YcbcrEncodingEnum { get; }
+    public ColorSpace.RangeEnum RangeEnum { get; }
+
+    public Mat Decode(int width, int height, int stride, List<Memory<byte>> planes);
+}