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diff --git a/indexer_JPIP/bio.c b/indexer_JPIP/bio.c
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+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2003, Yannick Verschueren
+ * Copyright (c) 2003,  Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * 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.
+ */
+
+#include "bio.h"
+#include <setjmp.h>
+
+static unsigned char *bio_start, *bio_end, *bio_bp;
+static unsigned int bio_buf;
+static int bio_ct;
+
+extern jmp_buf j2k_error;
+
+/// <summary>
+/// Number of bytes written.
+/// </summary>
+int bio_numbytes() {
+    return bio_bp-bio_start;
+}
+
+/// <summary>
+/// Init encoder.
+/// </summary>
+/// <param name="bp">Output buffer</param>
+/// <param name="len">Output buffer length</param>
+void bio_init_enc(unsigned char *bp, int len) {
+    bio_start=bp;
+    bio_end=bp+len;
+    bio_bp=bp;
+    bio_buf=0;
+    bio_ct=8;
+}
+
+/// <summary>
+/// Init decoder.
+/// </summary>
+/// <param name="bp">Input buffer</param>
+/// <param name="len">Input buffer length</param>
+void bio_init_dec(unsigned char *bp, int len) {
+    bio_start=bp;
+    bio_end=bp+len;
+    bio_bp=bp;
+    bio_buf=0;
+    bio_ct=0;
+}
+
+/// <summary>
+/// Write byte.
+/// </summary>
+int bio_byteout() {
+    bio_buf=(bio_buf<<8)&0xffff;
+    bio_ct=bio_buf==0xff00?7:8;
+    if (bio_bp>=bio_end) return 1; //longjmp(j2k_error, 1);
+    *bio_bp++=bio_buf>>8;
+    return 0;
+}
+
+/// <summary>
+/// Read byte. 
+/// </summary>
+int bio_bytein() {
+    bio_buf=(bio_buf<<8)&0xffff;
+    bio_ct=bio_buf==0xff00?7:8;
+    if (bio_bp>=bio_end) return 1; //longjmp(j2k_error, 1);
+    bio_buf|=*bio_bp++;
+    return 0;
+}
+
+/// <summary>
+/// Write bit.
+/// </summary>
+/// <param name="b">Bit to write (0 or 1)</param>
+void bio_putbit(int b) {
+    if (bio_ct==0) {
+        bio_byteout();
+    }
+    bio_ct--;
+    bio_buf|=b<<bio_ct;
+}
+
+/// <summary>
+/// Read bit.
+/// </summary>
+int bio_getbit() {
+    if (bio_ct==0) {
+        bio_bytein();
+    }
+    bio_ct--;
+    return (bio_buf>>bio_ct)&1;
+}
+
+/// <summary>
+/// Write bits.
+/// </summary>
+/// <param name="v">Value of bits</param>
+/// <param name="n">Number of bits to write</param>
+void bio_write(int v, int n) {
+    int i;
+    for (i=n-1; i>=0; i--) {
+        bio_putbit((v>>i)&1);
+    }
+}
+
+/// <summary>
+/// Read bits.
+/// </summary>
+/// <param name="n">Number of bits to read</param>
+int bio_read(int n) {
+    int i, v;
+    v=0;
+    for (i=n-1; i>=0; i--) {
+        v+=bio_getbit()<<i;
+    }
+    return v;
+}
+
+/// <summary>
+/// Flush bits.
+/// </summary>
+int bio_flush() {
+    bio_ct=0;
+    bio_byteout();
+    if (bio_ct==7) {
+        bio_ct=0;
+       if ( bio_byteout()) return 1;;
+    }
+    return 0;
+}
+
+/// <summary>
+/// </summary>
+int bio_inalign() {
+    bio_ct=0;
+    if ((bio_buf&0xff)==0xff) {
+       if( bio_bytein()) return 1;
+        bio_ct=0;
+    }
+    return 0;
+}