(caf7e6a2e) Replaced Concentus NuGet package with csproj (ensures correct System.Runtime references)

2019-04-29 21:11:59 +03:00
parent f10adc2612
commit 0b1b39d70a
149 changed files with 47171 additions and 70 deletions
@@ -0,0 +1,125 @@
+/* Copyright (c) 2007-2008 CSIRO
+   Copyright (c) 2007-2011 Xiph.Org Foundation
+   Originally written by Jean-Marc Valin, Gregory Maxwell, Koen Vos,
+   Timothy B. Terriberry, and the Opus open-source contributors
+   Ported to C# by Logan Stromberg
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   - Neither the name of Internet Society, IETF or IETF Trust, nor the
+   names of specific contributors, may be used to endorse or promote
+   products derived from this software without specific prior written
+   permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+using Concentus.Celt;
+using Concentus.Common;
+using Concentus.Common.CPlusPlus;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+
+namespace Concentus
+{
+    internal static class Downmix
+    {
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <typeparam name="T">The type of signal being handled (either short or float)</typeparam>
+        /// <param name="_x"></param>
+        /// <param name="sub"></param>
+        /// <param name="subframe"></param>
+        /// <param name="offset"></param>
+        /// <param name="c1"></param>
+        /// <param name="c2"></param>
+        /// <param name="C"></param>
+        public delegate void downmix_func<T>(T[] _x, int x_ptr, int[] sub, int sub_ptr, int subframe, int offset, int c1, int c2, int C);
+
+        internal static void downmix_float(float[] x, int x_ptr, int[] sub, int sub_ptr, int subframe, int offset, int c1, int c2, int C)
+        {
+            int scale;
+            int j;
+            int c1x = c1 + x_ptr;
+            for (j = 0; j < subframe; j++)
+                sub[sub_ptr + j] = Inlines.FLOAT2INT16(x[(j + offset) * C + c1x]);
+            if (c2 > -1)
+            {
+                int c2x = c2 + x_ptr;
+                for (j = 0; j < subframe; j++)
+                    sub[sub_ptr + j] += Inlines.FLOAT2INT16(x[(j + offset) * C + c2x]);
+            }
+            else if (c2 == -2)
+            {
+                int c;
+                int cx;
+                for (c = 1; c < C; c++)
+                {
+                    cx = c + x_ptr;
+                    for (j = 0; j < subframe; j++)
+                        sub[sub_ptr + j] += Inlines.FLOAT2INT16(x[(j + offset) * C + cx]);
+                }
+            }
+            scale = (1 << CeltConstants.SIG_SHIFT);
+            if (C == -2)
+                scale /= C;
+            else
+                scale /= 2;
+            for (j = 0; j < subframe; j++)
+                sub[sub_ptr + j] *= scale;
+        }
+
+        internal static void downmix_int(short[] x, int x_ptr, int[] sub, int sub_ptr, int subframe, int offset, int c1, int c2, int C)
+        {
+            int scale;
+            int j;
+            for (j = 0; j < subframe; j++)
+                sub[j + sub_ptr] = x[(j + offset) * C + c1];
+            if (c2 > -1)
+            {
+                for (j = 0; j < subframe; j++)
+                    sub[j + sub_ptr] += x[(j + offset) * C + c2];
+            }
+            else if (c2 == -2)
+            {
+                int c;
+                for (c = 1; c < C; c++)
+                {
+                    for (j = 0; j < subframe; j++)
+                        sub[j + sub_ptr] += x[(j + offset) * C + c];
+                }
+            }
+            scale = (1 << CeltConstants.SIG_SHIFT);
+            if (C == -2)
+                scale /= C;
+            else
+                scale /= 2;
+            for (j = 0; j < subframe; j++)
+                sub[j + sub_ptr] *= scale;
+        }
+
+    }
+}