about summary refs log tree commit diff
path: root/converter/other/jpeg2000/libjasper/jpc/jpc_mqenc.c
diff options
context:
space:
mode:
Diffstat (limited to 'converter/other/jpeg2000/libjasper/jpc/jpc_mqenc.c')
-rw-r--r--converter/other/jpeg2000/libjasper/jpc/jpc_mqenc.c441
1 files changed, 441 insertions, 0 deletions
diff --git a/converter/other/jpeg2000/libjasper/jpc/jpc_mqenc.c b/converter/other/jpeg2000/libjasper/jpc/jpc_mqenc.c
new file mode 100644
index 00000000..0219a000
--- /dev/null
+++ b/converter/other/jpeg2000/libjasper/jpc/jpc_mqenc.c
@@ -0,0 +1,441 @@
+/*
+ * 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 Software License
+ * 
+ * IMAGE POWER JPEG-2000 PUBLIC LICENSE
+ * ************************************
+ * 
+ * GRANT:
+ * 
+ * Permission is hereby granted, free of charge, to any person (the "User")
+ * obtaining a copy of this software and associated documentation, to deal
+ * in the JasPer Software without restriction, including without limitation
+ * the right to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the JasPer Software (in source and binary forms),
+ * and to permit persons to whom the JasPer Software is furnished to do so,
+ * provided further that the License Conditions below are met.
+ * 
+ * License Conditions
+ * ******************
+ * 
+ * A.  Redistributions of source code must retain the above copyright notice,
+ * and this list of conditions, and the following disclaimer.
+ * 
+ * B.  Redistributions in binary form must reproduce the above copyright
+ * notice, and this list of conditions, and the following disclaimer in
+ * the documentation and/or other materials provided with the distribution.
+ * 
+ * C.  Neither the name of Image Power, Inc. nor any other contributor
+ * (including, but not limited to, the University of British Columbia and
+ * Michael David Adams) may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * 
+ * D.  User agrees that it shall not commence any action against Image Power,
+ * Inc., the University of British Columbia, Michael David Adams, or any
+ * other contributors (collectively "Licensors") for infringement of any
+ * intellectual property rights ("IPR") held by the User in respect of any
+ * technology that User owns or has a right to license or sublicense and
+ * which is an element required in order to claim compliance with ISO/IEC
+ * 15444-1 (i.e., JPEG-2000 Part 1).  "IPR" means all intellectual property
+ * rights worldwide arising under statutory or common law, and whether
+ * or not perfected, including, without limitation, all (i) patents and
+ * patent applications owned or licensable by User; (ii) rights associated
+ * with works of authorship including copyrights, copyright applications,
+ * copyright registrations, mask work rights, mask work applications,
+ * mask work registrations; (iii) rights relating to the protection of
+ * trade secrets and confidential information; (iv) any right analogous
+ * to those set forth in subsections (i), (ii), or (iii) and any other
+ * proprietary rights relating to intangible property (other than trademark,
+ * trade dress, or service mark rights); and (v) divisions, continuations,
+ * renewals, reissues and extensions of the foregoing (as and to the extent
+ * applicable) now existing, hereafter filed, issued or acquired.
+ * 
+ * E.  If User commences an infringement action against any Licensor(s) then
+ * such Licensor(s) shall have the right to terminate User's license and
+ * all sublicenses that have been granted hereunder by User to other parties.
+ * 
+ * F.  This software is for use only in hardware or software products that
+ * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1).  No license
+ * or right to this Software is granted for products that do not comply
+ * with ISO/IEC 15444-1.  The JPEG-2000 Part 1 standard can be purchased
+ * from the ISO.
+ * 
+ * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
+ * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+ * THIS DISCLAIMER.  THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND
+ * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY
+ * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
+ * WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE,
+ * IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING.  THOSE INTENDING
+ * TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE
+ * OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING
+ * PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
+ * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE
+ * IS WITH THE USER.  SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE
+ * IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY
+ * OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY
+ * OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING,
+ * REPAIR OR CORRECTION.  UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY,
+ * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE
+ * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC.,
+ * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE
+ * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO
+ * THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION,
+ * DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR
+ * MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF
+ * SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY
+ * OF SUCH DAMAGES.  THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT
+ * FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR
+ * RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING
+ * FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES,
+ * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT
+ * LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
+ * JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY
+ * TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE
+ * ("HIGH RISK ACTIVITIES").  LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS
+ * OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.  USER WILL NOT
+ * KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING
+ * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS
+ * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE
+ * NOTICE SPECIFIED IN THIS SECTION.
+ * 
+ * __END_OF_JASPER_LICENSE__
+ */
+
+/*
+ * MQ Arithmetic Encoder
+ *
+ * $Id$
+ */
+
+/******************************************************************************\
+* Includes.
+\******************************************************************************/
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include "jasper/jas_stream.h"
+#include "jasper/jas_malloc.h"
+#include "jasper/jas_math.h"
+#include "jasper/jas_debug.h"
+
+#include "jpc_mqenc.h"
+
+/******************************************************************************\
+* Macros
+\******************************************************************************/
+
+#if defined(DEBUG)
+#define	JPC_MQENC_CALL(n, x) \
+	((jas_getdbglevel() >= (n)) ? ((void)(x)) : ((void)0))
+#else
+#define	JPC_MQENC_CALL(n, x)
+#endif
+
+#define	jpc_mqenc_codemps9(areg, creg, ctreg, curctx, enc) \
+{ \
+	jpc_mqstate_t *state = *(curctx); \
+	(areg) -= state->qeval; \
+	if (!((areg) & 0x8000)) { \
+		if ((areg) < state->qeval) { \
+			(areg) = state->qeval; \
+		} else { \
+			(creg) += state->qeval; \
+		} \
+		*(curctx) = state->nmps; \
+		jpc_mqenc_renorme((areg), (creg), (ctreg), (enc)); \
+	} else { \
+		(creg) += state->qeval; \
+	} \
+}
+
+#define	jpc_mqenc_codelps2(areg, creg, ctreg, curctx, enc) \
+{ \
+	jpc_mqstate_t *state = *(curctx); \
+	(areg) -= state->qeval; \
+	if ((areg) < state->qeval) { \
+		(creg) += state->qeval; \
+	} else { \
+		(areg) = state->qeval; \
+	} \
+	*(curctx) = state->nlps; \
+	jpc_mqenc_renorme((areg), (creg), (ctreg), (enc)); \
+}
+
+#define	jpc_mqenc_renorme(areg, creg, ctreg, enc) \
+{ \
+	do { \
+		(areg) <<= 1; \
+		(creg) <<= 1; \
+		if (!--(ctreg)) { \
+			jpc_mqenc_byteout((areg), (creg), (ctreg), (enc)); \
+		} \
+	} while (!((areg) & 0x8000)); \
+}
+
+#define	jpc_mqenc_byteout(areg, creg, ctreg, enc) \
+{ \
+	if ((enc)->outbuf != 0xff) { \
+		if ((creg) & 0x8000000) { \
+			if (++((enc)->outbuf) == 0xff) { \
+				(creg) &= 0x7ffffff; \
+				jpc_mqenc_byteout2(enc); \
+				enc->outbuf = ((creg) >> 20) & 0xff; \
+				(creg) &= 0xfffff; \
+				(ctreg) = 7; \
+			} else { \
+				jpc_mqenc_byteout2(enc); \
+				enc->outbuf = ((creg) >> 19) & 0xff; \
+				(creg) &= 0x7ffff; \
+				(ctreg) = 8; \
+			} \
+		} else { \
+			jpc_mqenc_byteout2(enc); \
+			(enc)->outbuf = ((creg) >> 19) & 0xff; \
+			(creg) &= 0x7ffff; \
+			(ctreg) = 8; \
+		} \
+	} else { \
+		jpc_mqenc_byteout2(enc); \
+		(enc)->outbuf = ((creg) >> 20) & 0xff; \
+		(creg) &= 0xfffff; \
+		(ctreg) = 7; \
+	} \
+}
+
+#define	jpc_mqenc_byteout2(enc) \
+{ \
+	if (enc->outbuf >= 0) { \
+		if (jas_stream_putc(enc->out, (unsigned char)enc->outbuf) == EOF) { \
+			enc->err |= 1; \
+		} \
+	} \
+	enc->lastbyte = enc->outbuf; \
+}
+
+/******************************************************************************\
+* Local function protoypes.
+\******************************************************************************/
+
+static void jpc_mqenc_setbits(jpc_mqenc_t *mqenc);
+
+/******************************************************************************\
+* Code for creation and destruction of encoder.
+\******************************************************************************/
+
+/* Create a MQ encoder. */
+
+jpc_mqenc_t *jpc_mqenc_create(int maxctxs, jas_stream_t *out)
+{
+	jpc_mqenc_t *mqenc;
+
+	/* Allocate memory for the MQ encoder. */
+	if (!(mqenc = jas_malloc(sizeof(jpc_mqenc_t)))) {
+		goto error;
+	}
+	mqenc->out = out;
+	mqenc->maxctxs = maxctxs;
+
+	/* Allocate memory for the per-context state information. */
+	if (!(mqenc->ctxs = jas_malloc(mqenc->maxctxs * sizeof(jpc_mqstate_t *)))) {
+		goto error;
+	}
+
+	/* Set the current context to the first one. */
+	mqenc->curctx = mqenc->ctxs;
+
+	jpc_mqenc_init(mqenc);
+
+	/* Initialize the per-context state information to something sane. */
+	jpc_mqenc_setctxs(mqenc, 0, 0);
+
+	return mqenc;
+
+error:
+	if (mqenc) {
+		jpc_mqenc_destroy(mqenc);
+	}
+	return 0;
+}
+
+/* Destroy a MQ encoder. */
+
+void jpc_mqenc_destroy(jpc_mqenc_t *mqenc)
+{
+	if (mqenc->ctxs) {
+		jas_free(mqenc->ctxs);
+	}
+	jas_free(mqenc);
+}
+
+/******************************************************************************\
+* State initialization code.
+\******************************************************************************/
+
+/* Initialize the coding state of a MQ encoder. */
+
+void jpc_mqenc_init(jpc_mqenc_t *mqenc)
+{
+	mqenc->areg = 0x8000;
+	mqenc->outbuf = -1;
+	mqenc->creg = 0;
+	mqenc->ctreg = 12;
+	mqenc->lastbyte = -1;
+	mqenc->err = 0;
+}
+
+/* Initialize one or more contexts. */
+
+void jpc_mqenc_setctxs(jpc_mqenc_t *mqenc, int numctxs, jpc_mqctx_t *ctxs)
+{
+	jpc_mqstate_t **ctx;
+	int n;
+
+	ctx = mqenc->ctxs;
+	n = JAS_MIN(mqenc->maxctxs, numctxs);
+	while (--n >= 0) {
+		*ctx = &jpc_mqstates[2 * ctxs->ind + ctxs->mps];
+		++ctx;
+		++ctxs;
+	}
+	n = mqenc->maxctxs - numctxs;
+	while (--n >= 0) {
+		*ctx = &jpc_mqstates[0];
+		++ctx;
+	}
+
+}
+
+/* Get the coding state for a MQ encoder. */
+
+void jpc_mqenc_getstate(jpc_mqenc_t *mqenc, jpc_mqencstate_t *state)
+{
+	state->areg = mqenc->areg;
+	state->creg = mqenc->creg;
+	state->ctreg = mqenc->ctreg;
+	state->lastbyte = mqenc->lastbyte;
+}
+
+/******************************************************************************\
+* Code for coding symbols.
+\******************************************************************************/
+
+/* Encode a bit. */
+
+int jpc_mqenc_putbit_func(jpc_mqenc_t *mqenc, int bit)
+{
+	const jpc_mqstate_t *state;
+	JAS_DBGLOG(100, ("jpc_mqenc_putbit(%p, %d)\n", mqenc, bit));
+	JPC_MQENC_CALL(100, jpc_mqenc_dump(mqenc, stderr));
+
+	state = *(mqenc->curctx);
+
+	if (state->mps == bit) {
+		/* Apply the CODEMPS algorithm as defined in the standard. */
+		mqenc->areg -= state->qeval;
+		if (!(mqenc->areg & 0x8000)) {
+			jpc_mqenc_codemps2(mqenc);
+		} else {
+			mqenc->creg += state->qeval;
+		}
+	} else {
+		/* Apply the CODELPS algorithm as defined in the standard. */
+		jpc_mqenc_codelps2(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc->curctx, mqenc);
+	}
+
+	return jpc_mqenc_error(mqenc) ? (-1) : 0;
+}
+
+int jpc_mqenc_codemps2(jpc_mqenc_t *mqenc)
+{
+	/* Note: This function only performs part of the work associated with
+	the CODEMPS algorithm from the standard.  Some of the work is also
+	performed by the caller. */
+
+	jpc_mqstate_t *state = *(mqenc->curctx);
+	if (mqenc->areg < state->qeval) {
+		mqenc->areg = state->qeval;
+	} else {
+		mqenc->creg += state->qeval;
+	}
+	*mqenc->curctx = state->nmps;
+	jpc_mqenc_renorme(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc);
+	return jpc_mqenc_error(mqenc) ? (-1) : 0;
+}
+
+int jpc_mqenc_codelps(jpc_mqenc_t *mqenc)
+{
+	jpc_mqenc_codelps2(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc->curctx, mqenc);
+	return jpc_mqenc_error(mqenc) ? (-1) : 0;
+}
+
+/******************************************************************************\
+* Miscellaneous code.
+\******************************************************************************/
+
+/* Terminate the code word. */
+
+int jpc_mqenc_flush(jpc_mqenc_t *mqenc, int termmode)
+{
+	int_fast16_t k;
+
+	switch (termmode) {
+	case JPC_MQENC_PTERM:
+		k = 11 - mqenc->ctreg + 1;
+		while (k > 0) {
+			mqenc->creg <<= mqenc->ctreg;
+			mqenc->ctreg = 0;
+			jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg,
+			  mqenc);
+			k -= mqenc->ctreg;
+		}
+		if (mqenc->outbuf != 0xff) {
+			jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc);
+		}
+		break;
+	case JPC_MQENC_DEFTERM:
+		jpc_mqenc_setbits(mqenc);
+		mqenc->creg <<= mqenc->ctreg;
+		jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc);
+		mqenc->creg <<= mqenc->ctreg;
+		jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc);
+		if (mqenc->outbuf != 0xff) {
+			jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc);
+		}
+		break;
+	default:
+		abort();
+		break;
+	}
+	return 0;
+}
+
+static void jpc_mqenc_setbits(jpc_mqenc_t *mqenc)
+{
+	uint_fast32_t tmp = mqenc->creg + mqenc->areg;
+	mqenc->creg |= 0xffff;
+	if (mqenc->creg >= tmp) {
+		mqenc->creg -= 0x8000;
+	}
+}
+
+/* Dump a MQ encoder to a stream for debugging. */
+
+int jpc_mqenc_dump(jpc_mqenc_t *mqenc, FILE *out)
+{
+	fprintf(out, "AREG = %08x, CREG = %08x, CTREG = %d\n",
+	  mqenc->areg, mqenc->creg, mqenc->ctreg);
+	fprintf(out, "IND = %02d, MPS = %d, QEVAL = %04x\n",
+	  *mqenc->curctx - jpc_mqstates, (*mqenc->curctx)->mps,
+	  (*mqenc->curctx)->qeval);
+	return 0;
+}