From 4d26da545d8df85917b06cd603ffa6e92fd431e5 Mon Sep 17 00:00:00 2001
From: Teravus Ovares
Date: Sat, 20 Dec 2008 01:20:40 +0000
Subject: * ReCommit the OpenID patch with a few less dependencies. * Removes
 all references to ASP.NET (System.Web.UI,*) * Removes all references to
 System.Web.Mobile

---
 OpenSim/Framework/OpenJpeg/bio.cs | 138 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 OpenSim/Framework/OpenJpeg/bio.cs

(limited to 'OpenSim/Framework/OpenJpeg/bio.cs')

diff --git a/OpenSim/Framework/OpenJpeg/bio.cs b/OpenSim/Framework/OpenJpeg/bio.cs
new file mode 100644
index 0000000..4f095ad
--- /dev/null
+++ b/OpenSim/Framework/OpenJpeg/bio.cs
@@ -0,0 +1,138 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OpenSim.Framework.OpenJpeg
+{
+    public static class bio
+    {
+        
+        public static opj_bio bio_create()
+        {
+            opj_bio bio = new opj_bio();
+            return bio;
+        }
+
+        public static void bio_destroy(opj_bio bio)
+        {
+            // not needed on C#
+        }
+
+        public static int bio_numbytes(opj_bio bio)
+        {
+            return (bio.bp - bio.start);
+        }
+
+        public static void bio_init_enc(opj_bio bio, sbyte bp, int len)
+        {
+            bio.start = (byte)bp;
+            bio.end = (byte)(bp + (byte)len);
+            bio.bp = (byte)bp;
+            bio.buf = 0;
+            bio.ct = 8;
+        }
+
+        public static void bio_init_dec(opj_bio bio, sbyte bp, int len)
+        {
+            bio.start = (byte)bp;
+            bio.end = (byte)(bp + len);
+            bio.bp = (byte)bp;
+            bio.buf = 0;
+            bio.ct = 0;
+        }
+
+        public static void bio_write(opj_bio bio, int v, int n)
+        {
+            for (int i = n - 1; i >= 0; i--)
+                bio_putbit(bio, (v >> i) & 1);
+        }
+
+        public static int bio_read(opj_bio bio, int n)
+        {
+            int v = 0;
+            for (int i = n - 1; i >= 0; i--)
+                v += bio_getbit(bio) << i;
+
+            return v;
+        }
+
+        public static int bio_flush(opj_bio bio)
+        {
+            bio.ct = 0;
+            if (bio_byteout(bio) != 0)
+                return 1;
+
+            if (bio.ct == 7)
+            {
+                bio.ct = 0;
+                if (bio_byteout(bio) != 0)
+                    return 1;
+            }
+            return 0;
+        }
+
+        public static int bio_inalign(opj_bio bio)
+        {
+            bio.ct = 0;
+            if ((bio.buf & 0xff) == 0xff)
+            {
+                if (bio_bytein(bio) != 0)
+                    return 1;
+                bio.ct = 0;
+            }
+            return 0;
+        }
+
+        private static int bio_bytein(opj_bio bio)
+        {
+            bio.buf = (bio.buf << 8) & 0xffff;
+            bio.ct = bio.buf == 0xff00 ? 7 : 8;
+            if (bio.bp >= bio.end)
+                return 1;
+            bio.buf |= bio.bp++;
+
+            return 0;
+        }
+
+        private static int bio_byteout(opj_bio bio)
+        {
+            bio.buf = (bio.buf << 8) & 0xffff;
+            bio.ct = bio.buf == 0xff00 ? 7 : 8;
+            if (bio.bp >= bio.end)
+                return 1;
+
+            bio.bp = (byte)(bio.buf >> 8);
+            bio.bp++;
+            return 0;
+        }
+
+        private static void bio_putbit(opj_bio bio, int b)
+        {
+            if (bio.ct == 0)
+                bio_byteout(bio);
+
+            bio.ct--;
+            bio.buf |= (byte)(b << bio.ct);
+
+        }
+
+        private static int bio_getbit(opj_bio bio)
+        {
+            if (bio.ct == 0)
+                bio_bytein(bio);
+            bio.ct--;
+
+            return (int)((bio.buf >> bio.ct) & 1);
+        }
+
+    }
+
+    public struct opj_bio
+    {
+        public byte start;
+        public byte end;
+        public byte bp;
+        public uint buf;
+        public int ct;
+    }
+}
-- 
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