add 3rd party folders back

2025-10-12 21:09:32 +03:00
parent 9cca8147d2
commit aaa0f93a0f
77 changed files with 13519 additions and 0 deletions
--- a/3rd/libomtnet/src/OMTBuffer.cs
+++ b/3rd/libomtnet/src/OMTBuffer.cs
@@ -0,0 +1,145 @@
+/*
+* MIT License
+*
+* Copyright (c) 2025 Open Media Transport Contributors
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all
+* copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+*/
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace libomtnet
+{
+    internal class OMTBuffer : OMTBase
+    {
+        private byte[] buffer;
+        private int offset;
+        private int length;
+        private int maximumLength;
+        private bool resizable = false;
+        public OMTBuffer(byte[] buffer, int offset, int maximumLength) 
+        {
+            this.buffer = buffer;
+            this.offset = offset;
+            this.maximumLength = maximumLength;
+            this.length = maximumLength;
+        }
+        public OMTBuffer(int maximumLength, bool resizable)
+        {
+            this.buffer = new byte[maximumLength];
+            this.offset = 0;
+            this.length = maximumLength;
+            this.maximumLength = maximumLength;
+            this.resizable = resizable;
+        }
+
+        public void Resize(int newMaximumLength)
+        {
+            if (resizable)
+            {
+                if (newMaximumLength > this.maximumLength)
+                {
+                    Debug.WriteLine("Resizing: " + this.maximumLength + " to " + newMaximumLength);
+                    this.maximumLength = newMaximumLength;
+                    this.buffer = new byte[maximumLength];
+                    this.length = 0;
+                    this.offset = 0;
+                }
+            } else
+            {
+                throw new Exception("This buffer does not support resizing.");
+            }
+        }
+
+        public void Append(byte[] buffer, int offset, int count)
+        {
+            System.Buffer.BlockCopy(buffer, offset, this.buffer, this.offset, count);
+            this.offset += count;
+            this.length += count;
+        }
+
+        public void Append(IntPtr buffer, int offset, int count)
+        {
+            Marshal.Copy(buffer + offset, this.buffer, this.offset, count);
+            this.offset += count;
+            this.length += count;
+        }
+
+        /// <summary>
+        /// Set the buffer where length is the entire length of valid data, not just from offset
+        /// </summary>
+        /// <param name="offset"></param>
+        /// <param name="length"></param>
+        public void SetBuffer(int offset, int length)
+        {
+            this.offset = offset;
+            this.length = length;
+        }
+
+        public void SetBuffer(byte[] buffer, int offset, int length)
+        {
+            this.buffer = buffer;
+            SetBuffer(offset, length);
+        }
+
+        public byte[] Buffer { get { return buffer; } }       
+        public int Offset { get { return offset; } }
+        public int Length { get { return length; } }
+        public int MaximumLength { get { return maximumLength; } }
+        public static OMTBuffer FromMetadata(string xml)
+        {
+            byte[] b = UTF8Encoding.UTF8.GetBytes(xml);
+            return new OMTBuffer(b, 0, b.Length);
+        }
+
+        public string ToMetadata()
+        {
+            return UTF8Encoding.UTF8.GetString(this.buffer, this.offset, this.length);
+        }
+        protected override void DisposeInternal()
+        {
+            buffer = null;
+            base.DisposeInternal();
+        }
+    }
+
+    internal class OMTPinnedBuffer : OMTBuffer
+    {
+        private GCHandle handle;
+        public OMTPinnedBuffer(int length)  : base(length,false)
+        {
+            handle = GCHandle.Alloc(this.Buffer, GCHandleType.Pinned);
+        }
+
+        public IntPtr Pointer { get {  return handle.AddrOfPinnedObject(); } }
+
+        protected override void DisposeInternal()
+        {
+            if (handle.IsAllocated)
+            {
+                handle.Free();
+            }
+            base.DisposeInternal();
+        }
+    }
+}