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diff --git a/libopenjpeg/mqc.c b/libopenjpeg/mqc.c
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+++ b/libopenjpeg/mqc.c
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+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2002-2003,  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 "mqc.h"
+#include <stdio.h>
+
+/* <summary> */
+/* This struct defines the state of a context. */
+/* </summary> */
+typedef struct mqc_state_s {
+	unsigned int qeval;						/* the probability of the Least Probable Symbol (0.75->0x8000, 1.5->0xffff) */
+	int mps;											/* the Most Probable Symbol (0 or 1) */
+	struct mqc_state_s *nmps;			/* next state if the next encoded symbol is the MPS */
+	struct mqc_state_s *nlps;			/* next state if the next encoded symbol is the LPS */
+} mqc_state_t;
+
+/* <summary> */
+/* This array defines all the possible states for a context. */
+/* </summary> */
+mqc_state_t mqc_states[47 * 2] = {
+	{0x5601, 0, &mqc_states[2], &mqc_states[3]},
+	{0x5601, 1, &mqc_states[3], &mqc_states[2]},
+	{0x3401, 0, &mqc_states[4], &mqc_states[12]},
+	{0x3401, 1, &mqc_states[5], &mqc_states[13]},
+	{0x1801, 0, &mqc_states[6], &mqc_states[18]},
+	{0x1801, 1, &mqc_states[7], &mqc_states[19]},
+	{0x0ac1, 0, &mqc_states[8], &mqc_states[24]},
+	{0x0ac1, 1, &mqc_states[9], &mqc_states[25]},
+	{0x0521, 0, &mqc_states[10], &mqc_states[58]},
+	{0x0521, 1, &mqc_states[11], &mqc_states[59]},
+	{0x0221, 0, &mqc_states[76], &mqc_states[66]},
+	{0x0221, 1, &mqc_states[77], &mqc_states[67]},
+	{0x5601, 0, &mqc_states[14], &mqc_states[13]},
+	{0x5601, 1, &mqc_states[15], &mqc_states[12]},
+	{0x5401, 0, &mqc_states[16], &mqc_states[28]},
+	{0x5401, 1, &mqc_states[17], &mqc_states[29]},
+	{0x4801, 0, &mqc_states[18], &mqc_states[28]},
+	{0x4801, 1, &mqc_states[19], &mqc_states[29]},
+	{0x3801, 0, &mqc_states[20], &mqc_states[28]},
+	{0x3801, 1, &mqc_states[21], &mqc_states[29]},
+	{0x3001, 0, &mqc_states[22], &mqc_states[34]},
+	{0x3001, 1, &mqc_states[23], &mqc_states[35]},
+	{0x2401, 0, &mqc_states[24], &mqc_states[36]},
+	{0x2401, 1, &mqc_states[25], &mqc_states[37]},
+	{0x1c01, 0, &mqc_states[26], &mqc_states[40]},
+	{0x1c01, 1, &mqc_states[27], &mqc_states[41]},
+	{0x1601, 0, &mqc_states[58], &mqc_states[42]},
+	{0x1601, 1, &mqc_states[59], &mqc_states[43]},
+	{0x5601, 0, &mqc_states[30], &mqc_states[29]},
+	{0x5601, 1, &mqc_states[31], &mqc_states[28]},
+	{0x5401, 0, &mqc_states[32], &mqc_states[28]},
+	{0x5401, 1, &mqc_states[33], &mqc_states[29]},
+	{0x5101, 0, &mqc_states[34], &mqc_states[30]},
+	{0x5101, 1, &mqc_states[35], &mqc_states[31]},
+	{0x4801, 0, &mqc_states[36], &mqc_states[32]},
+	{0x4801, 1, &mqc_states[37], &mqc_states[33]},
+	{0x3801, 0, &mqc_states[38], &mqc_states[34]},
+	{0x3801, 1, &mqc_states[39], &mqc_states[35]},
+	{0x3401, 0, &mqc_states[40], &mqc_states[36]},
+	{0x3401, 1, &mqc_states[41], &mqc_states[37]},
+	{0x3001, 0, &mqc_states[42], &mqc_states[38]},
+	{0x3001, 1, &mqc_states[43], &mqc_states[39]},
+	{0x2801, 0, &mqc_states[44], &mqc_states[38]},
+	{0x2801, 1, &mqc_states[45], &mqc_states[39]},
+	{0x2401, 0, &mqc_states[46], &mqc_states[40]},
+	{0x2401, 1, &mqc_states[47], &mqc_states[41]},
+	{0x2201, 0, &mqc_states[48], &mqc_states[42]},
+	{0x2201, 1, &mqc_states[49], &mqc_states[43]},
+	{0x1c01, 0, &mqc_states[50], &mqc_states[44]},
+	{0x1c01, 1, &mqc_states[51], &mqc_states[45]},
+	{0x1801, 0, &mqc_states[52], &mqc_states[46]},
+	{0x1801, 1, &mqc_states[53], &mqc_states[47]},
+	{0x1601, 0, &mqc_states[54], &mqc_states[48]},
+	{0x1601, 1, &mqc_states[55], &mqc_states[49]},
+	{0x1401, 0, &mqc_states[56], &mqc_states[50]},
+	{0x1401, 1, &mqc_states[57], &mqc_states[51]},
+	{0x1201, 0, &mqc_states[58], &mqc_states[52]},
+	{0x1201, 1, &mqc_states[59], &mqc_states[53]},
+	{0x1101, 0, &mqc_states[60], &mqc_states[54]},
+	{0x1101, 1, &mqc_states[61], &mqc_states[55]},
+	{0x0ac1, 0, &mqc_states[62], &mqc_states[56]},
+	{0x0ac1, 1, &mqc_states[63], &mqc_states[57]},
+	{0x09c1, 0, &mqc_states[64], &mqc_states[58]},
+	{0x09c1, 1, &mqc_states[65], &mqc_states[59]},
+	{0x08a1, 0, &mqc_states[66], &mqc_states[60]},
+	{0x08a1, 1, &mqc_states[67], &mqc_states[61]},
+	{0x0521, 0, &mqc_states[68], &mqc_states[62]},
+	{0x0521, 1, &mqc_states[69], &mqc_states[63]},
+	{0x0441, 0, &mqc_states[70], &mqc_states[64]},
+	{0x0441, 1, &mqc_states[71], &mqc_states[65]},
+	{0x02a1, 0, &mqc_states[72], &mqc_states[66]},
+	{0x02a1, 1, &mqc_states[73], &mqc_states[67]},
+	{0x0221, 0, &mqc_states[74], &mqc_states[68]},
+	{0x0221, 1, &mqc_states[75], &mqc_states[69]},
+	{0x0141, 0, &mqc_states[76], &mqc_states[70]},
+	{0x0141, 1, &mqc_states[77], &mqc_states[71]},
+	{0x0111, 0, &mqc_states[78], &mqc_states[72]},
+	{0x0111, 1, &mqc_states[79], &mqc_states[73]},
+	{0x0085, 0, &mqc_states[80], &mqc_states[74]},
+	{0x0085, 1, &mqc_states[81], &mqc_states[75]},
+	{0x0049, 0, &mqc_states[82], &mqc_states[76]},
+	{0x0049, 1, &mqc_states[83], &mqc_states[77]},
+	{0x0025, 0, &mqc_states[84], &mqc_states[78]},
+	{0x0025, 1, &mqc_states[85], &mqc_states[79]},
+	{0x0015, 0, &mqc_states[86], &mqc_states[80]},
+	{0x0015, 1, &mqc_states[87], &mqc_states[81]},
+	{0x0009, 0, &mqc_states[88], &mqc_states[82]},
+	{0x0009, 1, &mqc_states[89], &mqc_states[83]},
+	{0x0005, 0, &mqc_states[90], &mqc_states[84]},
+	{0x0005, 1, &mqc_states[91], &mqc_states[85]},
+	{0x0001, 0, &mqc_states[90], &mqc_states[86]},
+	{0x0001, 1, &mqc_states[91], &mqc_states[87]},
+	{0x5601, 0, &mqc_states[92], &mqc_states[92]},
+	{0x5601, 1, &mqc_states[93], &mqc_states[93]},
+};
+
+#define MQC_NUMCTXS 32
+
+unsigned int mqc_c;
+unsigned int mqc_a;
+unsigned int mqc_ct;
+unsigned char *mqc_bp;
+unsigned char *mqc_start;
+unsigned char *mqc_end;
+mqc_state_t *mqc_ctxs[MQC_NUMCTXS];
+mqc_state_t **mqc_curctx;
+
+/* <summary> */
+/* Return the number of bytes already encoded. */
+/* </summary> */
+int mqc_numbytes()
+{
+	return mqc_bp - mqc_start;
+}
+
+/* <summary> */
+/* Output a byte, doing bit-stuffing if necessary. */
+/* After a 0xff byte, the next byte must be smaller than 0x90 */
+/* </summary> */
+void mqc_byteout()
+{
+	if (*mqc_bp == 0xff) {
+		mqc_bp++;
+		*mqc_bp = mqc_c >> 20;
+		mqc_c &= 0xfffff;
+		mqc_ct = 7;
+	} else {
+		if ((mqc_c & 0x8000000) == 0) {	/* ((mqc_c&0x8000000)==0) CHANGE */
+			mqc_bp++;
+			*mqc_bp = mqc_c >> 19;
+			mqc_c &= 0x7ffff;
+			mqc_ct = 8;
+		} else {
+			(*mqc_bp)++;
+			if (*mqc_bp == 0xff) {
+				mqc_c &= 0x7ffffff;
+				mqc_bp++;
+				*mqc_bp = mqc_c >> 20;
+				mqc_c &= 0xfffff;
+				mqc_ct = 7;
+			} else {
+				mqc_bp++;
+				*mqc_bp = mqc_c >> 19;
+				mqc_c &= 0x7ffff;
+				mqc_ct = 8;
+			}
+		}
+	}
+}
+
+/* <summary> */
+/* Renormalize mqc_a and mqc_c while encoding, so that mqc_a stays between 0x8000 and 0x10000 */
+/* </summary> */
+void mqc_renorme()
+{
+	do {
+		mqc_a <<= 1;
+		mqc_c <<= 1;
+		mqc_ct--;
+		if (mqc_ct == 0) {
+			mqc_byteout();
+		}
+	} while ((mqc_a & 0x8000) == 0);
+}
+
+/* <summary> */
+/* Encode the most probable symbol. */
+/* </summary> */
+void mqc_codemps()
+{
+	mqc_a -= (*mqc_curctx)->qeval;
+	if ((mqc_a & 0x8000) == 0) {
+		if (mqc_a < (*mqc_curctx)->qeval) {
+			mqc_a = (*mqc_curctx)->qeval;
+		} else {
+			mqc_c += (*mqc_curctx)->qeval;
+		}
+		*mqc_curctx = (*mqc_curctx)->nmps;
+		mqc_renorme();
+	} else {
+		mqc_c += (*mqc_curctx)->qeval;
+	}
+}
+
+/* <summary> */
+/* Encode the most least symbol. */
+/* </summary> */
+void mqc_codelps()
+{
+	mqc_a -= (*mqc_curctx)->qeval;
+	if (mqc_a < (*mqc_curctx)->qeval) {
+		mqc_c += (*mqc_curctx)->qeval;
+	} else {
+		mqc_a = (*mqc_curctx)->qeval;
+	}
+	*mqc_curctx = (*mqc_curctx)->nlps;
+	mqc_renorme();
+}
+
+/* <summary> */
+/* Initialize encoder. */
+/* </summary> */
+/* <param name="bp">Output buffer.</param> */
+void mqc_init_enc(unsigned char *bp)
+{
+	mqc_setcurctx(0);
+	mqc_a = 0x8000;
+	mqc_c = 0;
+	mqc_bp = bp - 1;
+	mqc_ct = 12;
+	if (*mqc_bp == 0xff) {
+		mqc_ct = 13;
+	}
+	mqc_start = bp;
+}
+
+/* <summary> */
+/* Set current context. */
+/* </summary> */
+/* <param name="ctxno">Context number.</param> */
+void mqc_setcurctx(int ctxno)
+{
+	mqc_curctx = &mqc_ctxs[ctxno];
+}
+
+/* <summary> */
+/* Encode a symbol using the MQ-coder. */
+/* </summary> */
+/* <param name="d"> The symbol to be encoded (0 or 1).</param> */
+void mqc_encode(int d)
+{
+	if ((*mqc_curctx)->mps == d) {
+		mqc_codemps();
+	} else {
+		mqc_codelps();
+	}
+}
+
+/* <summary> */
+/* Fill mqc_c with 1's for flushing */
+/* </summary> */
+void mqc_setbits()
+{
+	unsigned int tempc = mqc_c + mqc_a;
+	mqc_c |= 0xffff;
+	if (mqc_c >= tempc) {
+		mqc_c -= 0x8000;
+	}
+}
+
+/* <summary> */
+/* Flush encoded data. */
+/* </summary> */
+void mqc_flush()
+{
+	mqc_setbits();
+	mqc_c <<= mqc_ct;
+	mqc_byteout();
+	mqc_c <<= mqc_ct;
+	mqc_byteout();
+
+	if (*mqc_bp != 0xff) {
+		mqc_bp++;
+	}
+}
+
+/* <summary> */
+/* not fully implemented and tested !! */
+/* BYPASS mode switch, initialization operation */
+/* JPEG 2000 p 505 */
+/* </summary> */
+void mqc_bypass_init_enc()
+{
+	mqc_c = 0;
+	mqc_ct = 8;
+	if (*mqc_bp == 0xff) {
+		mqc_ct = 7;
+	}
+}
+
+/* <summary> */
+/* not fully implemented and tested !! */
+/* BYPASS mode switch, coding operation */
+/* JPEG 2000 p 505 */
+/* </summary> */
+void mqc_bypass_enc(int d)
+{
+	mqc_ct--;
+	mqc_c = mqc_c + (d << mqc_ct);
+	if (mqc_ct == 0) {
+		mqc_bp++;
+		*mqc_bp = mqc_c;
+		mqc_ct = 8;
+		if (*mqc_bp == 0xff) {
+			mqc_ct = 7;
+		}
+		mqc_c = 0;
+	}
+}
+
+/* <summary> */
+/* not fully implemented and tested !! */
+/* BYPASS mode switch, flush operation */
+/* </summary> */
+int mqc_bypass_flush_enc()
+{
+	unsigned char bit_padding;
+
+	bit_padding = 0;
+
+	if (mqc_ct != 0) {
+		while (mqc_ct > 0) {
+			mqc_ct--;
+			mqc_c += bit_padding << mqc_ct;
+			bit_padding = (bit_padding + 1) & 0x01;
+		}
+		mqc_bp++;
+		*mqc_bp = mqc_c;
+		mqc_ct = 8;
+		mqc_c = 0;
+	}
+
+	return 1;
+}
+
+/* <summary> */
+/* RESET mode switch */
+/* </summary> */
+void mqc_reset_enc()
+{
+	mqc_resetstates();
+	mqc_setstate(18, 0, 46);
+	mqc_setstate(0, 0, 3);
+	mqc_setstate(1, 0, 4);
+}
+
+/* <summary> */
+/* mode switch RESTART (TERMALL) */
+/* </summary> */
+int mqc_restart_enc()
+{
+	int correction = 1;
+
+	/* <flush part> */
+	int n = 27 - 15 - mqc_ct;
+	mqc_c <<= mqc_ct;
+	while (n > 0) {
+		mqc_byteout();
+		n -= mqc_ct;
+		mqc_c <<= mqc_ct;
+	}
+	mqc_byteout();
+
+	return correction;
+}
+
+/* <summary> */
+/* mode switch RESTART (TERMALL) reinitialisation */
+/* </summary> */
+void mqc_restart_init_enc()
+{
+	/* <Re-init part> */
+	mqc_a = 0x8000;
+	mqc_c = 0;
+	mqc_ct = 12;
+	mqc_bp--;
+	if (*mqc_bp == 0xff) {
+		mqc_ct = 13;
+	}
+
+}
+
+
+/* <summary> */
+/* ERTERM mode switch  */
+/* </summary> */
+void mqc_erterm_enc()
+{
+	int k = 11 - mqc_ct + 1;
+
+	while (k > 0) {
+		mqc_c <<= mqc_ct;
+		mqc_ct = 0;
+		mqc_byteout();
+		k -= mqc_ct;
+	}
+
+	if (*mqc_bp != 0xff) {
+		mqc_byteout();
+	}
+}
+
+/* <summary> */
+/* SEGMARK mode switch (SEGSYM) */
+/* </summary> */
+void mqc_segmark_enc()
+{
+	int i;
+	mqc_setcurctx(18);
+
+	for (i = 1; i < 5; i++) {
+		mqc_encode(i % 2);
+	}
+}
+
+/* <summary> */
+/* </summary> */
+int mqc_mpsexchange()
+{
+	int d;
+	if (mqc_a < (*mqc_curctx)->qeval) {
+		d = 1 - (*mqc_curctx)->mps;
+		*mqc_curctx = (*mqc_curctx)->nlps;
+	} else {
+		d = (*mqc_curctx)->mps;
+		*mqc_curctx = (*mqc_curctx)->nmps;
+	}
+	return d;
+}
+
+/* <summary> */
+/* </summary> */
+int mqc_lpsexchange()
+{
+	int d;
+	if (mqc_a < (*mqc_curctx)->qeval) {
+		mqc_a = (*mqc_curctx)->qeval;
+		d = (*mqc_curctx)->mps;
+		*mqc_curctx = (*mqc_curctx)->nmps;
+	} else {
+		mqc_a = (*mqc_curctx)->qeval;
+		d = 1 - (*mqc_curctx)->mps;
+		*mqc_curctx = (*mqc_curctx)->nlps;
+	}
+	return d;
+}
+
+/* <summary> */
+/* Input a byte. */
+/* </summary> */
+void mqc_bytein()
+{
+	if (mqc_bp != mqc_end) {
+		unsigned int c;
+		if (mqc_bp + 1 != mqc_end) {
+			c = *(mqc_bp + 1);
+		} else {
+			c = 0xff;
+		}
+		if (*mqc_bp == 0xff) {
+			if (c > 0x8f) {
+				mqc_c += 0xff00;
+				mqc_ct = 8;
+			} else {
+				mqc_bp++;
+				mqc_c += c << 9;
+				mqc_ct = 7;
+			}
+		} else {
+			mqc_bp++;
+			mqc_c += c << 8;
+			mqc_ct = 8;
+		}
+	} else {
+		mqc_c += 0xff00;
+		mqc_ct = 8;
+	}
+}
+
+/* <summary> */
+/* Renormalize mqc_a and mqc_c while decoding. */
+/* </summary> */
+void mqc_renormd()
+{
+	do {
+		if (mqc_ct == 0) {
+			mqc_bytein();
+		}
+		mqc_a <<= 1;
+		mqc_c <<= 1;
+		mqc_ct--;
+	} while (mqc_a < 0x8000);
+}
+
+/* <summary> */
+/* Initialize decoder. */
+/* </summary> */
+void mqc_init_dec(unsigned char *bp, int len)
+{
+	mqc_setcurctx(0);
+	mqc_start = bp;
+	mqc_end = bp + len;
+	mqc_bp = bp;
+	mqc_c = *mqc_bp << 16;
+	mqc_bytein();
+	mqc_c <<= 7;
+	mqc_ct -= 7;
+	mqc_a = 0x8000;
+}
+
+/* <summary> */
+/* Decode a symbol. */
+/* </summary> */
+int mqc_decode()
+{
+	int d;
+	mqc_a -= (*mqc_curctx)->qeval;
+	if ((mqc_c >> 16) < (*mqc_curctx)->qeval) {
+		d = mqc_lpsexchange();
+		mqc_renormd();
+	} else {
+		mqc_c -= (*mqc_curctx)->qeval << 16;
+		if ((mqc_a & 0x8000) == 0) {
+			d = mqc_mpsexchange();
+			mqc_renormd();
+		} else {
+			d = (*mqc_curctx)->mps;
+		}
+	}
+	return d;
+}
+
+/* <summary> */
+/* Reset states of all contexts. */
+/* </summary> */
+void mqc_resetstates()
+{
+	int i;
+	for (i = 0; i < MQC_NUMCTXS; i++) {
+		mqc_ctxs[i] = mqc_states;
+	}
+}
+
+/* <summary> */
+/* Set the state for a context. */
+/* </summary> */
+/* <param name="ctxno">Context number</param> */
+/* <param name="msb">Most significant bit</param> */
+/* <param name="prob">Index to the probability of symbols</param> */
+void mqc_setstate(int ctxno, int msb, int prob)
+{
+	mqc_ctxs[ctxno] = &mqc_states[msb + (prob << 1)];
+}