feat(sdk): implement Timestamp API

Assets/MediaPipe/SDK/Scripts/Framework/Timestamp.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Mediapipe {
+  public class Timestamp : MpResourceHandle {
+    public Timestamp(IntPtr ptr) : base(ptr) {}
+
+    public Timestamp(Int64 value) : base() {
+      UnsafeNativeMethods.mp_Timestamp__l(value, out var ptr);
+      this.ptr = ptr;
+    }
+
+    protected override void DisposeUnmanaged() {
+      if (OwnsResource()) {
+        UnsafeNativeMethods.mp_Timestamp__delete(ptr);
+      }
+      base.DisposeUnmanaged();
+    }
+
+    public Int64 Value() {
+      return SafeNativeMethods.mp_Timestamp__Value(mpPtr);
+    }
+
+    public double Seconds() {
+      return SafeNativeMethods.mp_Timestamp__Seconds(mpPtr);
+    }
+
+    public Int64 Microseconds() {
+      return SafeNativeMethods.mp_Timestamp__Microseconds(mpPtr);
+    }
+
+    public bool IsSpecialValue() {
+      return SafeNativeMethods.mp_Timestamp__IsSpecialValue(mpPtr);
+    }
+
+    public bool IsRangeValue() {
+      return SafeNativeMethods.mp_Timestamp__IsRangeValue(mpPtr);
+    }
+
+    public bool IsAllowedInStream() {
+      return SafeNativeMethods.mp_Timestamp__IsAllowedInStream(mpPtr);
+    }
+
+    public string DebugString() {
+      UnsafeNativeMethods.mp_Timestamp__DebugString(mpPtr, out var strPtr).Assert();
+      var str = Marshal.PtrToStringAnsi(strPtr);
+      UnsafeNativeMethods.delete_array__PKc(strPtr);
+
+      GC.KeepAlive(this);
+      return str;
+    }
+
+    public Timestamp NextAllowedInStream() {
+      UnsafeNativeMethods.mp_Timestamp__NextAllowedInStream(mpPtr, out var nextPtr).Assert();
+
+      GC.KeepAlive(this);
+      return new Timestamp(nextPtr);
+    }
+
+    public Timestamp PreviousAllowedInStream() {
+      UnsafeNativeMethods.mp_Timestamp__PreviousAllowedInStream(mpPtr, out var prevPtr).Assert();
+
+      GC.KeepAlive(this);
+      return new Timestamp(prevPtr);
+    }
+
+    public static Timestamp FromSeconds(double seconds) {
+      UnsafeNativeMethods.mp_Timestamp_FromSeconds__d(seconds, out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp Unset() {
+      UnsafeNativeMethods.mp_Timestamp_Unset(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp Unstarted() {
+      UnsafeNativeMethods.mp_Timestamp_Unstarted(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp PreStream() {
+      UnsafeNativeMethods.mp_Timestamp_PreStream(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp Min() {
+      UnsafeNativeMethods.mp_Timestamp_Min(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp Max() {
+      UnsafeNativeMethods.mp_Timestamp_Max(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp PostStream() {
+      UnsafeNativeMethods.mp_Timestamp_PostStream(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp OneOverPostStream() {
+      UnsafeNativeMethods.mp_Timestamp_OneOverPostStream(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+
+    public static Timestamp Done() {
+      UnsafeNativeMethods.mp_Timestamp_Done(out var ptr).Assert();
+
+      return new Timestamp(ptr);
+    }
+  }
+}

Assets/MediaPipe/SDK/Scripts/PInvoke/NativeMethods/Framework/Timestamp_Safe.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Diagnostics.Contracts;
+using System.Runtime.InteropServices;
+
+namespace Mediapipe {
+  internal static partial class SafeNativeMethods {
+    [Pure, DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern Int64 mp_Timestamp__Value(IntPtr timestamp);
+
+    [Pure, DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern double mp_Timestamp__Seconds(IntPtr timestamp);
+
+    [Pure, DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern Int64 mp_Timestamp__Microseconds(IntPtr timestamp);
+
+    [Pure, DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    [return: MarshalAs(UnmanagedType.I1)]
+    public static extern bool mp_Timestamp__IsSpecialValue(IntPtr timestamp);
+
+    [Pure, DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    [return: MarshalAs(UnmanagedType.I1)]
+    public static extern bool mp_Timestamp__IsRangeValue(IntPtr timestamp);
+
+    [Pure, DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    [return: MarshalAs(UnmanagedType.I1)]
+    public static extern bool mp_Timestamp__IsAllowedInStream(IntPtr timestamp);
+  }
+}

Assets/MediaPipe/SDK/Scripts/PInvoke/NativeMethods/Framework/Timestamp_Unsafe.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Mediapipe {
+  internal static partial class UnsafeNativeMethods {
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp__l(Int64 value, out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern void mp_Timestamp__delete(IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp__DebugString(IntPtr timestamp, out IntPtr str);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp__NextAllowedInStream(IntPtr timestamp, out IntPtr nextTimestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp__PreviousAllowedInStream(IntPtr timestamp, out IntPtr prevTimestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_FromSeconds__d(double seconds, out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_Unset(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_Unstarted(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_PreStream(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_Min(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_Max(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_PostStream(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_OneOverPostStream(out IntPtr timestamp);
+
+    [DllImport (MediaPipeLibrary, ExactSpelling = true)]
+    public static extern MpReturnCode mp_Timestamp_Done(out IntPtr timestamp);
+  }
+}