X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2Fgdcmopenjpeg%2Flibopenjpeg%2Fmqc.c;h=f06751af081188f4420d6604fb1386a142bc2264;hb=48215bafde3d6955d9cd60e074f6d6832ea9752f;hp=e37e132e4acbb7662fae78b70caeaa999511aa7d;hpb=bef3bec50f674640783aed3d3c4cbcdd3fb919d7;p=gdcm.git

diff --git a/src/gdcmopenjpeg/libopenjpeg/mqc.c b/src/gdcmopenjpeg/libopenjpeg/mqc.c
index e37e132e..f06751af 100644
--- a/src/gdcmopenjpeg/libopenjpeg/mqc.c
+++ b/src/gdcmopenjpeg/libopenjpeg/mqc.c
@@ -1,541 +1,541 @@
-/*
- * Copyright (c) 2001-2003, David Janssens
- * Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
- * Copyright (c) 2005, Hervé Drolon, FreeImage Team
- * Copyright (c) 2002-2005, 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 "opj_includes.h"
-
-/** @defgroup MQC MQC - Implementation of an MQ-Coder */
-/*@{*/
-
-/** @name Local static functions */
-/*@{*/
-
-/**
-Output a byte, doing bit-stuffing if necessary.
-After a 0xff byte, the next byte must be smaller than 0x90.
-@param mqc MQC handle
-*/
-static void mqc_byteout(opj_mqc_t *mqc);
-/**
-Renormalize mqc->a and mqc->c while encoding, so that mqc->a stays between 0x8000 and 0x10000
-@param mqc MQC handle
-*/
-static void mqc_renorme(opj_mqc_t *mqc);
-/**
-Encode the most probable symbol
-@param mqc MQC handle
-*/
-static void mqc_codemps(opj_mqc_t *mqc);
-/**
-Encode the most least symbol
-@param mqc MQC handle
-*/
-static void mqc_codelps(opj_mqc_t *mqc);
-/**
-Fill mqc->c with 1's for flushing
-@param mqc MQC handle
-*/
-static void mqc_setbits(opj_mqc_t *mqc);
-/**
-FIXME: documentation ???
-@param mqc MQC handle
-@return 
-*/
-static int mqc_mpsexchange(opj_mqc_t *mqc);
-/**
-FIXME: documentation ???
-@param mqc MQC handle
-@return 
-*/
-static int mqc_lpsexchange(opj_mqc_t *mqc);
-/**
-Input a byte
-@param mqc MQC handle
-*/
-static void mqc_bytein(opj_mqc_t *mqc);
-/**
-Renormalize mqc->a and mqc->c while decoding
-@param mqc MQC handle
-*/
-static void mqc_renormd(opj_mqc_t *mqc);
-
-/*@}*/
-
-/*@}*/
-
-/* <summary> */
-/* This array defines all the possible states for a context. */
-/* </summary> */
-static opj_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]},
-};
-
-/* 
-==========================================================
-   local functions
-==========================================================
-*/
-
-static void mqc_byteout(opj_mqc_t *mqc) {
-  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;
-      }
-    }
-  }
-}
-
-static void mqc_renorme(opj_mqc_t *mqc) {
-  do {
-    mqc->a <<= 1;
-    mqc->c <<= 1;
-    mqc->ct--;
-    if (mqc->ct == 0) {
-      mqc_byteout(mqc);
-    }
-  } while ((mqc->a & 0x8000) == 0);
-}
-
-static void mqc_codemps(opj_mqc_t *mqc) {
-  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(mqc);
-  } else {
-    mqc->c += (*mqc->curctx)->qeval;
-  }
-}
-
-static void mqc_codelps(opj_mqc_t *mqc) {
-  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(mqc);
-}
-
-static void mqc_setbits(opj_mqc_t *mqc) {
-  unsigned int tempc = mqc->c + mqc->a;
-  mqc->c |= 0xffff;
-  if (mqc->c >= tempc) {
-    mqc->c -= 0x8000;
-  }
-}
-
-static int mqc_mpsexchange(opj_mqc_t *mqc) {
-  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;
-}
-
-static int mqc_lpsexchange(opj_mqc_t *mqc) {
-  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;
-}
-
-static void mqc_bytein(opj_mqc_t *mqc) {
-  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;
-  }
-}
-
-static void mqc_renormd(opj_mqc_t *mqc) {
-  do {
-    if (mqc->ct == 0) {
-      mqc_bytein(mqc);
-    }
-    mqc->a <<= 1;
-    mqc->c <<= 1;
-    mqc->ct--;
-  } while (mqc->a < 0x8000);
-}
-
-/* 
-==========================================================
-   MQ-Coder interface
-==========================================================
-*/
-
-opj_mqc_t* mqc_create() {
-  opj_mqc_t *mqc = (opj_mqc_t*)opj_malloc(sizeof(opj_mqc_t));
-  return mqc;
-}
-
-void mqc_destroy(opj_mqc_t *mqc) {
-  if(mqc) {
-    opj_free(mqc);
-  }
-}
-
-int mqc_numbytes(opj_mqc_t *mqc) {
-  return mqc->bp - mqc->start;
-}
-
-void mqc_init_enc(opj_mqc_t *mqc, unsigned char *bp) {
-  mqc_setcurctx(mqc, 0);
-  mqc->a = 0x8000;
-  mqc->c = 0;
-  mqc->bp = bp - 1;
-  mqc->ct = 12;
-  if (*mqc->bp == 0xff) {
-    mqc->ct = 13;
-  }
-  mqc->start = bp;
-}
-
-void mqc_setcurctx(opj_mqc_t *mqc, int ctxno) {
-  mqc->curctx = &mqc->ctxs[ctxno];
-}
-
-void mqc_encode(opj_mqc_t *mqc, int d) {
-  if ((*mqc->curctx)->mps == d) {
-    mqc_codemps(mqc);
-  } else {
-    mqc_codelps(mqc);
-  }
-}
-
-void mqc_flush(opj_mqc_t *mqc) {
-  mqc_setbits(mqc);
-  mqc->c <<= mqc->ct;
-  mqc_byteout(mqc);
-  mqc->c <<= mqc->ct;
-  mqc_byteout(mqc);
-  
-  if (*mqc->bp != 0xff) {
-    mqc->bp++;
-  }
-}
-
-void mqc_bypass_init_enc(opj_mqc_t *mqc) {
-  mqc->c = 0;
-  mqc->ct = 8;
-  /*if (*mqc->bp == 0xff) {
-  mqc->ct = 7;
-     } */
-}
-
-void mqc_bypass_enc(opj_mqc_t *mqc, 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;
-  }
-}
-
-int mqc_bypass_flush_enc(opj_mqc_t *mqc) {
-  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;
-}
-
-void mqc_reset_enc(opj_mqc_t *mqc) {
-  mqc_resetstates(mqc);
-  mqc_setstate(mqc, 18, 0, 46);
-  mqc_setstate(mqc, 0, 0, 3);
-  mqc_setstate(mqc, 1, 0, 4);
-}
-
-int mqc_restart_enc(opj_mqc_t *mqc) {
-  int correction = 1;
-  
-  /* <flush part> */
-  int n = 27 - 15 - mqc->ct;
-  mqc->c <<= mqc->ct;
-  while (n > 0) {
-    mqc_byteout(mqc);
-    n -= mqc->ct;
-    mqc->c <<= mqc->ct;
-  }
-  mqc_byteout(mqc);
-  
-  return correction;
-}
-
-void mqc_restart_init_enc(opj_mqc_t *mqc) {
-  /* <Re-init part> */
-  mqc_setcurctx(mqc, 0);
-  mqc->a = 0x8000;
-  mqc->c = 0;
-  mqc->ct = 12;
-  mqc->bp--;
-  if (*mqc->bp == 0xff) {
-    mqc->ct = 13;
-  }
-}
-
-void mqc_erterm_enc(opj_mqc_t *mqc) {
-  int k = 11 - mqc->ct + 1;
-  
-  while (k > 0) {
-    mqc->c <<= mqc->ct;
-    mqc->ct = 0;
-    mqc_byteout(mqc);
-    k -= mqc->ct;
-  }
-  
-  if (*mqc->bp != 0xff) {
-    mqc_byteout(mqc);
-  }
-}
-
-void mqc_segmark_enc(opj_mqc_t *mqc) {
-  int i;
-  mqc_setcurctx(mqc, 18);
-  
-  for (i = 1; i < 5; i++) {
-    mqc_encode(mqc, i % 2);
-  }
-}
-
-void mqc_init_dec(opj_mqc_t *mqc, unsigned char *bp, int len) {
-  mqc_setcurctx(mqc, 0);
-  mqc->start = bp;
-  mqc->end = bp + len;
-  mqc->bp = bp;
-  if (len==0) mqc->c = 0xff << 16;
-  else mqc->c = *mqc->bp << 16;
-  mqc_bytein(mqc);
-  mqc->c <<= 7;
-  mqc->ct -= 7;
-  mqc->a = 0x8000;
-}
-
-int mqc_decode(opj_mqc_t *mqc) {
-  int d;
-  mqc->a -= (*mqc->curctx)->qeval;
-  if ((mqc->c >> 16) < (*mqc->curctx)->qeval) {
-    d = mqc_lpsexchange(mqc);
-    mqc_renormd(mqc);
-  } else {
-    mqc->c -= (*mqc->curctx)->qeval << 16;
-    if ((mqc->a & 0x8000) == 0) {
-      d = mqc_mpsexchange(mqc);
-      mqc_renormd(mqc);
-    } else {
-      d = (*mqc->curctx)->mps;
-    }
-  }
-
-  return d;
-}
-
-void mqc_resetstates(opj_mqc_t *mqc) {
-  int i;
-  for (i = 0; i < MQC_NUMCTXS; i++) {
-    mqc->ctxs[i] = mqc_states;
-  }
-}
-
-void mqc_setstate(opj_mqc_t *mqc, int ctxno, int msb, int prob) {
-  mqc->ctxs[ctxno] = &mqc_states[msb + (prob << 1)];
-}
-
-
+/*
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
+ * Copyright (c) 2005, Hervé Drolon, FreeImage Team
+ * Copyright (c) 2002-2005, 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 "opj_includes.h"
+
+/** @defgroup MQC MQC - Implementation of an MQ-Coder */
+/*@{*/
+
+/** @name Local static functions */
+/*@{*/
+
+/**
+Output a byte, doing bit-stuffing if necessary.
+After a 0xff byte, the next byte must be smaller than 0x90.
+@param mqc MQC handle
+*/
+static void mqc_byteout(opj_mqc_t *mqc);
+/**
+Renormalize mqc->a and mqc->c while encoding, so that mqc->a stays between 0x8000 and 0x10000
+@param mqc MQC handle
+*/
+static void mqc_renorme(opj_mqc_t *mqc);
+/**
+Encode the most probable symbol
+@param mqc MQC handle
+*/
+static void mqc_codemps(opj_mqc_t *mqc);
+/**
+Encode the most least symbol
+@param mqc MQC handle
+*/
+static void mqc_codelps(opj_mqc_t *mqc);
+/**
+Fill mqc->c with 1's for flushing
+@param mqc MQC handle
+*/
+static void mqc_setbits(opj_mqc_t *mqc);
+/**
+FIXME: documentation ???
+@param mqc MQC handle
+@return 
+*/
+static int mqc_mpsexchange(opj_mqc_t *mqc);
+/**
+FIXME: documentation ???
+@param mqc MQC handle
+@return 
+*/
+static int mqc_lpsexchange(opj_mqc_t *mqc);
+/**
+Input a byte
+@param mqc MQC handle
+*/
+static void mqc_bytein(opj_mqc_t *mqc);
+/**
+Renormalize mqc->a and mqc->c while decoding
+@param mqc MQC handle
+*/
+static void mqc_renormd(opj_mqc_t *mqc);
+
+/*@}*/
+
+/*@}*/
+
+/* <summary> */
+/* This array defines all the possible states for a context. */
+/* </summary> */
+static opj_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]},
+};
+
+/* 
+==========================================================
+   local functions
+==========================================================
+*/
+
+static void mqc_byteout(opj_mqc_t *mqc) {
+  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;
+      }
+    }
+  }
+}
+
+static void mqc_renorme(opj_mqc_t *mqc) {
+  do {
+    mqc->a <<= 1;
+    mqc->c <<= 1;
+    mqc->ct--;
+    if (mqc->ct == 0) {
+      mqc_byteout(mqc);
+    }
+  } while ((mqc->a & 0x8000) == 0);
+}
+
+static void mqc_codemps(opj_mqc_t *mqc) {
+  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(mqc);
+  } else {
+    mqc->c += (*mqc->curctx)->qeval;
+  }
+}
+
+static void mqc_codelps(opj_mqc_t *mqc) {
+  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(mqc);
+}
+
+static void mqc_setbits(opj_mqc_t *mqc) {
+  unsigned int tempc = mqc->c + mqc->a;
+  mqc->c |= 0xffff;
+  if (mqc->c >= tempc) {
+    mqc->c -= 0x8000;
+  }
+}
+
+static int mqc_mpsexchange(opj_mqc_t *mqc) {
+  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;
+}
+
+static int mqc_lpsexchange(opj_mqc_t *mqc) {
+  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;
+}
+
+static void mqc_bytein(opj_mqc_t *mqc) {
+  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;
+  }
+}
+
+static void mqc_renormd(opj_mqc_t *mqc) {
+  do {
+    if (mqc->ct == 0) {
+      mqc_bytein(mqc);
+    }
+    mqc->a <<= 1;
+    mqc->c <<= 1;
+    mqc->ct--;
+  } while (mqc->a < 0x8000);
+}
+
+/* 
+==========================================================
+   MQ-Coder interface
+==========================================================
+*/
+
+opj_mqc_t* mqc_create() {
+  opj_mqc_t *mqc = (opj_mqc_t*)opj_malloc(sizeof(opj_mqc_t));
+  return mqc;
+}
+
+void mqc_destroy(opj_mqc_t *mqc) {
+  if(mqc) {
+    opj_free(mqc);
+  }
+}
+
+int mqc_numbytes(opj_mqc_t *mqc) {
+  return mqc->bp - mqc->start;
+}
+
+void mqc_init_enc(opj_mqc_t *mqc, unsigned char *bp) {
+  mqc_setcurctx(mqc, 0);
+  mqc->a = 0x8000;
+  mqc->c = 0;
+  mqc->bp = bp - 1;
+  mqc->ct = 12;
+  if (*mqc->bp == 0xff) {
+    mqc->ct = 13;
+  }
+  mqc->start = bp;
+}
+
+void mqc_setcurctx(opj_mqc_t *mqc, int ctxno) {
+  mqc->curctx = &mqc->ctxs[ctxno];
+}
+
+void mqc_encode(opj_mqc_t *mqc, int d) {
+  if ((*mqc->curctx)->mps == d) {
+    mqc_codemps(mqc);
+  } else {
+    mqc_codelps(mqc);
+  }
+}
+
+void mqc_flush(opj_mqc_t *mqc) {
+  mqc_setbits(mqc);
+  mqc->c <<= mqc->ct;
+  mqc_byteout(mqc);
+  mqc->c <<= mqc->ct;
+  mqc_byteout(mqc);
+  
+  if (*mqc->bp != 0xff) {
+    mqc->bp++;
+  }
+}
+
+void mqc_bypass_init_enc(opj_mqc_t *mqc) {
+  mqc->c = 0;
+  mqc->ct = 8;
+  /*if (*mqc->bp == 0xff) {
+  mqc->ct = 7;
+     } */
+}
+
+void mqc_bypass_enc(opj_mqc_t *mqc, 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;
+  }
+}
+
+int mqc_bypass_flush_enc(opj_mqc_t *mqc) {
+  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;
+}
+
+void mqc_reset_enc(opj_mqc_t *mqc) {
+  mqc_resetstates(mqc);
+  mqc_setstate(mqc, 18, 0, 46);
+  mqc_setstate(mqc, 0, 0, 3);
+  mqc_setstate(mqc, 1, 0, 4);
+}
+
+int mqc_restart_enc(opj_mqc_t *mqc) {
+  int correction = 1;
+  
+  /* <flush part> */
+  int n = 27 - 15 - mqc->ct;
+  mqc->c <<= mqc->ct;
+  while (n > 0) {
+    mqc_byteout(mqc);
+    n -= mqc->ct;
+    mqc->c <<= mqc->ct;
+  }
+  mqc_byteout(mqc);
+  
+  return correction;
+}
+
+void mqc_restart_init_enc(opj_mqc_t *mqc) {
+  /* <Re-init part> */
+  mqc_setcurctx(mqc, 0);
+  mqc->a = 0x8000;
+  mqc->c = 0;
+  mqc->ct = 12;
+  mqc->bp--;
+  if (*mqc->bp == 0xff) {
+    mqc->ct = 13;
+  }
+}
+
+void mqc_erterm_enc(opj_mqc_t *mqc) {
+  int k = 11 - mqc->ct + 1;
+  
+  while (k > 0) {
+    mqc->c <<= mqc->ct;
+    mqc->ct = 0;
+    mqc_byteout(mqc);
+    k -= mqc->ct;
+  }
+  
+  if (*mqc->bp != 0xff) {
+    mqc_byteout(mqc);
+  }
+}
+
+void mqc_segmark_enc(opj_mqc_t *mqc) {
+  int i;
+  mqc_setcurctx(mqc, 18);
+  
+  for (i = 1; i < 5; i++) {
+    mqc_encode(mqc, i % 2);
+  }
+}
+
+void mqc_init_dec(opj_mqc_t *mqc, unsigned char *bp, int len) {
+  mqc_setcurctx(mqc, 0);
+  mqc->start = bp;
+  mqc->end = bp + len;
+  mqc->bp = bp;
+  if (len==0) mqc->c = 0xff << 16;
+  else mqc->c = *mqc->bp << 16;
+  mqc_bytein(mqc);
+  mqc->c <<= 7;
+  mqc->ct -= 7;
+  mqc->a = 0x8000;
+}
+
+int mqc_decode(opj_mqc_t *mqc) {
+  int d;
+  mqc->a -= (*mqc->curctx)->qeval;
+  if ((mqc->c >> 16) < (*mqc->curctx)->qeval) {
+    d = mqc_lpsexchange(mqc);
+    mqc_renormd(mqc);
+  } else {
+    mqc->c -= (*mqc->curctx)->qeval << 16;
+    if ((mqc->a & 0x8000) == 0) {
+      d = mqc_mpsexchange(mqc);
+      mqc_renormd(mqc);
+    } else {
+      d = (*mqc->curctx)->mps;
+    }
+  }
+
+  return d;
+}
+
+void mqc_resetstates(opj_mqc_t *mqc) {
+  int i;
+  for (i = 0; i < MQC_NUMCTXS; i++) {
+    mqc->ctxs[i] = mqc_states;
+  }
+}
+
+void mqc_setstate(opj_mqc_t *mqc, int ctxno, int msb, int prob) {
+  mqc->ctxs[ctxno] = &mqc_states[msb + (prob << 1)];
+}
+
+