KIKIMR-19287: add task_stats_drawing script

1 files changed, 524 insertions, 0 deletions

diff --git a/contrib/libs/openjpeg/mqc.c b/contrib/libs/openjpeg/mqc.c
new file mode 100644
index 0000000000..4cbfabd033
--- /dev/null
+++ b/contrib/libs/openjpeg/mqc.c
@@ -0,0 +1,524 @@
+/*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2014, Professor Benoit Macq
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux
+ * Copyright (c) 2003-2014, Antonin Descampe
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
+ * 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"
+
+#include <assert.h>
+
+/** @defgroup MQC MQC - Implementation of an MQ-Coder */
+/*@{*/
+
+/** @name Local static functions */
+/*@{*/
+
+/**
+Fill mqc->c with 1's for flushing
+@param mqc MQC handle
+*/
+static void opj_mqc_setbits(opj_mqc_t *mqc);
+/*@}*/
+
+/*@}*/
+
+/* <summary> */
+/* This array defines all the possible states for a context. */
+/* </summary> */
+static const 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 opj_mqc_setbits(opj_mqc_t *mqc)
+{
+    OPJ_UINT32 tempc = mqc->c + mqc->a;
+    mqc->c |= 0xffff;
+    if (mqc->c >= tempc) {
+        mqc->c -= 0x8000;
+    }
+}
+
+/*
+==========================================================
+   MQ-Coder interface
+==========================================================
+*/
+
+OPJ_UINT32 opj_mqc_numbytes(opj_mqc_t *mqc)
+{
+    const ptrdiff_t diff = mqc->bp - mqc->start;
+#if 0
+    assert(diff <= 0xffffffff && diff >= 0);   /* UINT32_MAX */
+#endif
+    return (OPJ_UINT32)diff;
+}
+
+void opj_mqc_init_enc(opj_mqc_t *mqc, OPJ_BYTE *bp)
+{
+    /* To avoid the curctx pointer to be dangling, but not strictly */
+    /* required as the current context is always set before encoding */
+    opj_mqc_setcurctx(mqc, 0);
+
+    /* As specified in Figure C.10 - Initialization of the encoder */
+    /* (C.2.8 Initialization of the encoder (INITENC)) */
+    mqc->a = 0x8000;
+    mqc->c = 0;
+    /* Yes, we point before the start of the buffer, but this is safe */
+    /* given opj_tcd_code_block_enc_allocate_data() */
+    mqc->bp = bp - 1;
+    mqc->ct = 12;
+    /* At this point we should test *(mqc->bp) against 0xFF, but this is not */
+    /* necessary, as this is only used at the beginning of the code block */
+    /* and our initial fake byte is set at 0 */
+    assert(*(mqc->bp) != 0xff);
+
+    mqc->start = bp;
+    mqc->end_of_byte_stream_counter = 0;
+}
+
+
+void opj_mqc_flush(opj_mqc_t *mqc)
+{
+    /* C.2.9 Termination of coding (FLUSH) */
+    /* Figure C.11 – FLUSH procedure */
+    opj_mqc_setbits(mqc);
+    mqc->c <<= mqc->ct;
+    opj_mqc_byteout(mqc);
+    mqc->c <<= mqc->ct;
+    opj_mqc_byteout(mqc);
+
+    /* It is forbidden that a coding pass ends with 0xff */
+    if (*mqc->bp != 0xff) {
+        /* Advance pointer so that opj_mqc_numbytes() returns a valid value */
+        mqc->bp++;
+    }
+}
+
+void opj_mqc_bypass_init_enc(opj_mqc_t *mqc)
+{
+    /* This function is normally called after at least one opj_mqc_flush() */
+    /* which will have advance mqc->bp by at least 2 bytes beyond its */
+    /* initial position */
+    assert(mqc->bp >= mqc->start);
+    mqc->c = 0;
+    /* in theory we should initialize to 8, but use this special value */
+    /* as a hint that opj_mqc_bypass_enc() has never been called, so */
+    /* as to avoid the 0xff 0x7f elimination trick in opj_mqc_bypass_flush_enc() */
+    /* to trigger when we don't have output any bit during this bypass sequence */
+    /* Any value > 8 will do */
+    mqc->ct = BYPASS_CT_INIT;
+    /* Given that we are called after opj_mqc_flush(), the previous byte */
+    /* cannot be 0xff. */
+    assert(mqc->bp[-1] != 0xff);
+}
+
+void opj_mqc_bypass_enc(opj_mqc_t *mqc, OPJ_UINT32 d)
+{
+    if (mqc->ct == BYPASS_CT_INIT) {
+        mqc->ct = 8;
+    }
+    mqc->ct--;
+    mqc->c = mqc->c + (d << mqc->ct);
+    if (mqc->ct == 0) {
+        *mqc->bp = (OPJ_BYTE)mqc->c;
+        mqc->ct = 8;
+        /* If the previous byte was 0xff, make sure that the next msb is 0 */
+        if (*mqc->bp == 0xff) {
+            mqc->ct = 7;
+        }
+        mqc->bp++;
+        mqc->c = 0;
+    }
+}
+
+OPJ_UINT32 opj_mqc_bypass_get_extra_bytes(opj_mqc_t *mqc, OPJ_BOOL erterm)
+{
+    return (mqc->ct < 7 ||
+            (mqc->ct == 7 && (erterm || mqc->bp[-1] != 0xff))) ? 1 : 0;
+}
+
+void opj_mqc_bypass_flush_enc(opj_mqc_t *mqc, OPJ_BOOL erterm)
+{
+    /* Is there any bit remaining to be flushed ? */
+    /* If the last output byte is 0xff, we can discard it, unless */
+    /* erterm is required (I'm not completely sure why in erterm */
+    /* we must output 0xff 0x2a if the last byte was 0xff instead of */
+    /* discarding it, but Kakadu requires it when decoding */
+    /* in -fussy mode) */
+    if (mqc->ct < 7 || (mqc->ct == 7 && (erterm || mqc->bp[-1] != 0xff))) {
+        OPJ_BYTE bit_value = 0;
+        /* If so, fill the remaining lsbs with an alternating sequence of */
+        /* 0,1,... */
+        /* Note: it seems the standard only requires that for a ERTERM flush */
+        /* and doesn't specify what to do for a regular BYPASS flush */
+        while (mqc->ct > 0) {
+            mqc->ct--;
+            mqc->c += (OPJ_UINT32)(bit_value << mqc->ct);
+            bit_value = (OPJ_BYTE)(1U - bit_value);
+        }
+        *mqc->bp = (OPJ_BYTE)mqc->c;
+        /* Advance pointer so that opj_mqc_numbytes() returns a valid value */
+        mqc->bp++;
+    } else if (mqc->ct == 7 && mqc->bp[-1] == 0xff) {
+        /* Discard last 0xff */
+        assert(!erterm);
+        mqc->bp --;
+    } else if (mqc->ct == 8 && !erterm &&
+               mqc->bp[-1] == 0x7f && mqc->bp[-2] == 0xff) {
+        /* Tiny optimization: discard terminating 0xff 0x7f since it is */
+        /* interpreted as 0xff 0x7f [0xff 0xff] by the decoder, and given */
+        /* the bit stuffing, in fact as 0xff 0xff [0xff ..] */
+        /* Happens once on opj_compress -i ../MAPA.tif -o MAPA.j2k  -M 1 */
+        mqc->bp -= 2;
+    }
+
+    assert(mqc->bp[-1] != 0xff);
+}
+
+void opj_mqc_reset_enc(opj_mqc_t *mqc)
+{
+    opj_mqc_resetstates(mqc);
+    opj_mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
+    opj_mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
+    opj_mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
+}
+
+#ifdef notdef
+OPJ_UINT32 opj_mqc_restart_enc(opj_mqc_t *mqc)
+{
+    OPJ_UINT32 correction = 1;
+
+    /* <flush part> */
+    OPJ_INT32 n = (OPJ_INT32)(27 - 15 - mqc->ct);
+    mqc->c <<= mqc->ct;
+    while (n > 0) {
+        opj_mqc_byteout(mqc);
+        n -= (OPJ_INT32)mqc->ct;
+        mqc->c <<= mqc->ct;
+    }
+    opj_mqc_byteout(mqc);
+
+    return correction;
+}
+#endif
+
+void opj_mqc_restart_init_enc(opj_mqc_t *mqc)
+{
+    /* <Re-init part> */
+
+    /* As specified in Figure C.10 - Initialization of the encoder */
+    /* (C.2.8 Initialization of the encoder (INITENC)) */
+    mqc->a = 0x8000;
+    mqc->c = 0;
+    mqc->ct = 12;
+    /* This function is normally called after at least one opj_mqc_flush() */
+    /* which will have advance mqc->bp by at least 2 bytes beyond its */
+    /* initial position */
+    mqc->bp --;
+    assert(mqc->bp >= mqc->start - 1);
+    assert(*mqc->bp != 0xff);
+    if (*mqc->bp == 0xff) {
+        mqc->ct = 13;
+    }
+}
+
+void opj_mqc_erterm_enc(opj_mqc_t *mqc)
+{
+    OPJ_INT32 k = (OPJ_INT32)(11 - mqc->ct + 1);
+
+    while (k > 0) {
+        mqc->c <<= mqc->ct;
+        mqc->ct = 0;
+        opj_mqc_byteout(mqc);
+        k -= (OPJ_INT32)mqc->ct;
+    }
+
+    if (*mqc->bp != 0xff) {
+        opj_mqc_byteout(mqc);
+    }
+}
+
+static INLINE void opj_mqc_renorme(opj_mqc_t *mqc)
+{
+    opj_mqc_renorme_macro(mqc, mqc->a, mqc->c, mqc->ct);
+}
+
+/**
+Encode the most probable symbol
+@param mqc MQC handle
+*/
+static INLINE void opj_mqc_codemps(opj_mqc_t *mqc)
+{
+    opj_mqc_codemps_macro(mqc, mqc->curctx, mqc->a, mqc->c, mqc->ct);
+}
+
+/**
+Encode the most least symbol
+@param mqc MQC handle
+*/
+static INLINE void opj_mqc_codelps(opj_mqc_t *mqc)
+{
+    opj_mqc_codelps_macro(mqc, mqc->curctx, mqc->a, mqc->c, mqc->ct);
+}
+
+/**
+Encode a symbol using the MQ-coder
+@param mqc MQC handle
+@param d The symbol to be encoded (0 or 1)
+*/
+static INLINE void opj_mqc_encode(opj_mqc_t *mqc, OPJ_UINT32 d)
+{
+    if ((*mqc->curctx)->mps == d) {
+        opj_mqc_codemps(mqc);
+    } else {
+        opj_mqc_codelps(mqc);
+    }
+}
+
+void opj_mqc_segmark_enc(opj_mqc_t *mqc)
+{
+    OPJ_UINT32 i;
+    opj_mqc_setcurctx(mqc, 18);
+
+    for (i = 1; i < 5; i++) {
+        opj_mqc_encode(mqc, i % 2);
+    }
+}
+
+static void opj_mqc_init_dec_common(opj_mqc_t *mqc,
+                                    OPJ_BYTE *bp,
+                                    OPJ_UINT32 len,
+                                    OPJ_UINT32 extra_writable_bytes)
+{
+    (void)extra_writable_bytes;
+
+    assert(extra_writable_bytes >= OPJ_COMMON_CBLK_DATA_EXTRA);
+    mqc->start = bp;
+    mqc->end = bp + len;
+    /* Insert an artificial 0xFF 0xFF marker at end of the code block */
+    /* data so that the bytein routines stop on it. This saves us comparing */
+    /* the bp and end pointers */
+    /* But before inserting it, backup th bytes we will overwrite */
+    memcpy(mqc->backup, mqc->end, OPJ_COMMON_CBLK_DATA_EXTRA);
+    mqc->end[0] = 0xFF;
+    mqc->end[1] = 0xFF;
+    mqc->bp = bp;
+}
+void opj_mqc_init_dec(opj_mqc_t *mqc, OPJ_BYTE *bp, OPJ_UINT32 len,
+                      OPJ_UINT32 extra_writable_bytes)
+{
+    /* Implements ISO 15444-1 C.3.5 Initialization of the decoder (INITDEC) */
+    /* Note: alternate "J.1 - Initialization of the software-conventions */
+    /* decoder" has been tried, but does */
+    /* not bring any improvement. */
+    /* See https://github.com/uclouvain/openjpeg/issues/921 */
+    opj_mqc_init_dec_common(mqc, bp, len, extra_writable_bytes);
+    opj_mqc_setcurctx(mqc, 0);
+    mqc->end_of_byte_stream_counter = 0;
+    if (len == 0) {
+        mqc->c = 0xff << 16;
+    } else {
+        mqc->c = (OPJ_UINT32)(*mqc->bp << 16);
+    }
+
+    opj_mqc_bytein(mqc);
+    mqc->c <<= 7;
+    mqc->ct -= 7;
+    mqc->a = 0x8000;
+}
+
+
+void opj_mqc_raw_init_dec(opj_mqc_t *mqc, OPJ_BYTE *bp, OPJ_UINT32 len,
+                          OPJ_UINT32 extra_writable_bytes)
+{
+    opj_mqc_init_dec_common(mqc, bp, len, extra_writable_bytes);
+    mqc->c = 0;
+    mqc->ct = 0;
+}
+
+
+void opq_mqc_finish_dec(opj_mqc_t *mqc)
+{
+    /* Restore the bytes overwritten by opj_mqc_init_dec_common() */
+    memcpy(mqc->end, mqc->backup, OPJ_COMMON_CBLK_DATA_EXTRA);
+}
+
+void opj_mqc_resetstates(opj_mqc_t *mqc)
+{
+    OPJ_UINT32 i;
+    for (i = 0; i < MQC_NUMCTXS; i++) {
+        mqc->ctxs[i] = mqc_states;
+    }
+}
+
+void opj_mqc_setstate(opj_mqc_t *mqc, OPJ_UINT32 ctxno, OPJ_UINT32 msb,
+                      OPJ_INT32 prob)
+{
+    mqc->ctxs[ctxno] = &mqc_states[msb + (OPJ_UINT32)(prob << 1)];
+}
+
+void opj_mqc_byteout(opj_mqc_t *mqc)
+{
+    /* bp is initialized to start - 1 in opj_mqc_init_enc() */
+    /* but this is safe, see opj_tcd_code_block_enc_allocate_data() */
+    assert(mqc->bp >= mqc->start - 1);
+    if (*mqc->bp == 0xff) {
+        mqc->bp++;
+        *mqc->bp = (OPJ_BYTE)(mqc->c >> 20);
+        mqc->c &= 0xfffff;
+        mqc->ct = 7;
+    } else {
+        if ((mqc->c & 0x8000000) == 0) {
+            mqc->bp++;
+            *mqc->bp = (OPJ_BYTE)(mqc->c >> 19);
+            mqc->c &= 0x7ffff;
+            mqc->ct = 8;
+        } else {
+            (*mqc->bp)++;
+            if (*mqc->bp == 0xff) {
+                mqc->c &= 0x7ffffff;
+                mqc->bp++;
+                *mqc->bp = (OPJ_BYTE)(mqc->c >> 20);
+                mqc->c &= 0xfffff;
+                mqc->ct = 7;
+            } else {
+                mqc->bp++;
+                *mqc->bp = (OPJ_BYTE)(mqc->c >> 19);
+                mqc->c &= 0x7ffff;
+                mqc->ct = 8;
+            }
+        }
+    }
+}
\ No newline at end of file