--- /dev/null
+/*
+ * Copyright (c) 1999-2000 Image Power, Inc. and the University of
+ * British Columbia.
+ * Copyright (c) 2001-2002 Michael David Adams.
+ * All rights reserved.
+ */
+
+/* __START_OF_JASPER_LICENSE__
+ *
+ * JasPer License Version 2.0
+ *
+ * Copyright (c) 2001-2006 Michael David Adams
+ * Copyright (c) 1999-2000 Image Power, Inc.
+ * Copyright (c) 1999-2000 The University of British Columbia
+ *
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person (the
+ * "User") obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ *
+ * 1. The above copyright notices and this permission notice (which
+ * includes the disclaimer below) shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * 2. The name of a copyright holder shall not be used to endorse or
+ * promote products derived from the Software without specific prior
+ * written permission.
+ *
+ * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
+ * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+ * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
+ * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
+ * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
+ * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
+ * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
+ * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
+ * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
+ * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
+ * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
+ * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
+ * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
+ * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
+ * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
+ * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
+ * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
+ * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
+ * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
+ *
+ * __END_OF_JASPER_LICENSE__
+ */
+
+/*
+ * MQ Arithmetic Encoder
+ *
+ * $Id: jpc_mqenc.h,v 1.2 2008-05-26 09:40:52 vp153 Exp $
+ */
+
+#ifndef JPC_MQENC_H
+#define JPC_MQENC_H
+
+/******************************************************************************\
+* Includes.
+\******************************************************************************/
+
+#include "jasper/jas_types.h"
+#include "jasper/jas_stream.h"
+
+#include "jpc_mqcod.h"
+
+/******************************************************************************\
+* Constants.
+\******************************************************************************/
+
+/*
+ * Termination modes.
+ */
+
+#define JPC_MQENC_DEFTERM 0 /* default termination */
+#define JPC_MQENC_PTERM 1 /* predictable termination */
+
+/******************************************************************************\
+* Types.
+\******************************************************************************/
+
+/* MQ arithmetic encoder class. */
+
+typedef struct {
+
+ /* The C register. */
+ uint_fast32_t creg;
+
+ /* The A register. */
+ uint_fast32_t areg;
+
+ /* The CT register. */
+ uint_fast32_t ctreg;
+
+ /* The maximum number of contexts. */
+ int maxctxs;
+
+ /* The per-context information. */
+ jpc_mqstate_t **ctxs;
+
+ /* The current context. */
+ jpc_mqstate_t **curctx;
+
+ /* The stream for encoder output. */
+ jas_stream_t *out;
+
+ /* The byte buffer (i.e., the B variable in the standard). */
+ int_fast16_t outbuf;
+
+ /* The last byte output. */
+ int_fast16_t lastbyte;
+
+ /* The error indicator. */
+ int err;
+
+} jpc_mqenc_t;
+
+/* MQ arithmetic encoder state information. */
+
+typedef struct {
+
+ /* The A register. */
+ unsigned areg;
+
+ /* The C register. */
+ unsigned creg;
+
+ /* The CT register. */
+ unsigned ctreg;
+
+ /* The last byte output by the encoder. */
+ int lastbyte;
+
+} jpc_mqencstate_t;
+
+/******************************************************************************\
+* Functions/macros for construction and destruction.
+\******************************************************************************/
+
+/* Create a MQ encoder. */
+jpc_mqenc_t *jpc_mqenc_create(int maxctxs, jas_stream_t *out);
+
+/* Destroy a MQ encoder. */
+void jpc_mqenc_destroy(jpc_mqenc_t *enc);
+
+/******************************************************************************\
+* Functions/macros for initialization.
+\******************************************************************************/
+
+/* Initialize a MQ encoder. */
+void jpc_mqenc_init(jpc_mqenc_t *enc);
+
+/******************************************************************************\
+* Functions/macros for context manipulation.
+\******************************************************************************/
+
+/* Set the current context. */
+#define jpc_mqenc_setcurctx(enc, ctxno) \
+ ((enc)->curctx = &(enc)->ctxs[ctxno]);
+
+/* Set the state information for a particular context. */
+void jpc_mqenc_setctx(jpc_mqenc_t *enc, int ctxno, jpc_mqctx_t *ctx);
+
+/* Set the state information for multiple contexts. */
+void jpc_mqenc_setctxs(jpc_mqenc_t *enc, int numctxs, jpc_mqctx_t *ctxs);
+
+/******************************************************************************\
+* Miscellaneous functions/macros.
+\******************************************************************************/
+
+/* Get the error state of a MQ encoder. */
+#define jpc_mqenc_error(enc) \
+ ((enc)->err)
+
+/* Get the current encoder state. */
+void jpc_mqenc_getstate(jpc_mqenc_t *enc, jpc_mqencstate_t *state);
+
+/* Terminate the code. */
+int jpc_mqenc_flush(jpc_mqenc_t *enc, int termmode);
+
+/******************************************************************************\
+* Functions/macros for encoding bits.
+\******************************************************************************/
+
+/* Encode a bit. */
+#if !defined(DEBUG)
+#define jpc_mqenc_putbit(enc, bit) jpc_mqenc_putbit_macro(enc, bit)
+#else
+#define jpc_mqenc_putbit(enc, bit) jpc_mqenc_putbit_func(enc, bit)
+#endif
+
+/******************************************************************************\
+* Functions/macros for debugging.
+\******************************************************************************/
+
+int jpc_mqenc_dump(jpc_mqenc_t *mqenc, FILE *out);
+
+/******************************************************************************\
+* Implementation-specific details.
+\******************************************************************************/
+
+/* Note: This macro is included only to satisfy the needs of
+ the mqenc_putbit macro. */
+#define jpc_mqenc_putbit_macro(enc, bit) \
+ (((*((enc)->curctx))->mps == (bit)) ? \
+ (((enc)->areg -= (*(enc)->curctx)->qeval), \
+ ((!((enc)->areg & 0x8000)) ? (jpc_mqenc_codemps2(enc)) : \
+ ((enc)->creg += (*(enc)->curctx)->qeval))) : \
+ jpc_mqenc_codelps(enc))
+
+/* Note: These function prototypes are included only to satisfy the
+ needs of the mqenc_putbit_macro macro. Do not call any of these
+ functions directly. */
+int jpc_mqenc_codemps2(jpc_mqenc_t *enc);
+int jpc_mqenc_codelps(jpc_mqenc_t *enc);
+
+/* Note: This function prototype is included only to satisfy the needs of
+ the mqenc_putbit macro. */
+int jpc_mqenc_putbit_func(jpc_mqenc_t *enc, int bit);
+
+#endif
projects / opencv / blobdiff