43 lines
1.1 KiB
C#
43 lines
1.1 KiB
C#
using System.Runtime.InteropServices;
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namespace FfiChannels
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{
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[StructLayout(LayoutKind.Sequential)]
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public struct ByteArray
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{
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public IntPtr data;
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public int length;
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public byte[] ToByteArray() {
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var array = new byte[length];
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Marshal.Copy(data, array, 0, length);
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return array;
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}
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}
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public delegate void Callback(ByteArray byteArray);
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public static class Bindings {
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[DllImport("ffi_channels")]
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public static extern void send(byte[] data, int length);
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[DllImport("ffi_channels")]
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public static extern ByteArray receive();
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[DllImport("ffi_channels")]
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public static extern void register_callback(Callback cb);
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[DllImport("ffi_channels")]
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public static extern void start_listening();
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public static Task<byte[]> ReceiveAsync() {
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return Task.Run(() => {
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Console.WriteLine("Receiving..");
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var ptr = receive(); //blocking call
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Console.WriteLine("Received!");
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return ptr.ToByteArray();
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});
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}
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}
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} |