Create Subversion repository

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 1204 insertions, 0 deletions

diff --git a/converter/other/jpeg2000/libjasper/base/jas_stream.c b/converter/other/jpeg2000/libjasper/base/jas_stream.c
new file mode 100644
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--- /dev/null
+++ b/converter/other/jpeg2000/libjasper/base/jas_stream.c
@@ -0,0 +1,1204 @@
+/*
+ * 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__
+ */
+
+#define _SVID_SOURCE
+    /* Make sure P_tmpdir is defined in GNU libc 2.0.7 (_XOPEN_SOURCE 500
+       does it in other libc's).  pm_config.h defines TMPDIR as P_tmpdir
+       in some environments.
+    */
+#define _XOPEN_SOURCE 500    /* Make sure P_tmpdir is defined */
+
+#include <assert.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <ctype.h>
+#if defined(HAVE_UNISTD_H)
+#include <unistd.h>
+#endif
+#if defined(WIN32) || defined(HAVE_IO_H)
+#include <io.h>
+#endif
+
+#include "jasper/jas_types.h"
+#include "jasper/jas_stream.h"
+#include "jasper/jas_malloc.h"
+#include "jasper/jas_math.h"
+
+/****************************************************************************\
+* Local function prototypes.
+\****************************************************************************/
+
+static int jas_strtoopenmode(const char *s);
+static void jas_stream_destroy(jas_stream_t *stream);
+static jas_stream_t *jas_stream_create(void);
+static void jas_stream_initbuf(jas_stream_t *stream, int bufmode, char *buf,
+  int bufsize);
+
+static int mem_read(jas_stream_obj_t *obj, char *buf, int cnt);
+static int mem_write(jas_stream_obj_t *obj, char *buf, int cnt);
+static long mem_seek(jas_stream_obj_t *obj, long offset, int origin);
+static int mem_close(jas_stream_obj_t *obj);
+
+static int sfile_read(jas_stream_obj_t *obj, char *buf, int cnt);
+static int sfile_write(jas_stream_obj_t *obj, char *buf, int cnt);
+static long sfile_seek(jas_stream_obj_t *obj, long offset, int origin);
+static int sfile_close(jas_stream_obj_t *obj);
+
+static int file_read(jas_stream_obj_t *obj, char *buf, int cnt);
+static int file_write(jas_stream_obj_t *obj, char *buf, int cnt);
+static long file_seek(jas_stream_obj_t *obj, long offset, int origin);
+static int file_close(jas_stream_obj_t *obj);
+
+/******************************************************************************\
+* Local data.
+\******************************************************************************/
+
+static jas_stream_ops_t jas_stream_fileops = {
+	file_read,
+	file_write,
+	file_seek,
+	file_close
+};
+
+static jas_stream_ops_t jas_stream_sfileops = {
+	sfile_read,
+	sfile_write,
+	sfile_seek,
+	sfile_close
+};
+
+static jas_stream_ops_t jas_stream_memops = {
+	mem_read,
+	mem_write,
+	mem_seek,
+	mem_close
+};
+
+/******************************************************************************\
+* Code for opening and closing streams.
+\******************************************************************************/
+
+static jas_stream_t *jas_stream_create()
+{
+	jas_stream_t *stream;
+
+	if (!(stream = jas_malloc(sizeof(jas_stream_t)))) {
+		return 0;
+	}
+	stream->openmode_ = 0;
+	stream->bufmode_ = 0;
+	stream->flags_ = 0;
+	stream->bufbase_ = 0;
+	stream->bufstart_ = 0;
+	stream->bufsize_ = 0;
+	stream->ptr_ = 0;
+	stream->cnt_ = 0;
+	stream->ops_ = 0;
+	stream->obj_ = 0;
+	stream->rwcnt_ = 0;
+	stream->rwlimit_ = -1;
+
+	return stream;
+}
+
+jas_stream_t *jas_stream_memopen(char *buf, int bufsize)
+{
+	jas_stream_t *stream;
+	jas_stream_memobj_t *obj;
+
+	if (!(stream = jas_stream_create())) {
+		return 0;
+	}
+
+	/* A stream associated with a memory buffer is always opened
+	for both reading and writing in binary mode. */
+	stream->openmode_ = JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY;
+
+	/* Since the stream data is already resident in memory, buffering
+	is not necessary. */
+	/* But... It still may be faster to use buffering anyways. */
+	jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);
+
+	/* Select the operations for a memory stream. */
+	stream->ops_ = &jas_stream_memops;
+
+	/* Allocate memory for the underlying memory stream object. */
+	if (!(obj = jas_malloc(sizeof(jas_stream_memobj_t)))) {
+		jas_stream_destroy(stream);
+		return 0;
+	}
+	stream->obj_ = (void *) obj;
+
+	/* Initialize a few important members of the memory stream object. */
+	obj->myalloc_ = 0;
+	obj->buf_ = 0;
+
+	/* If the buffer size specified is nonpositive, then the buffer
+	is allocated internally and automatically grown as needed. */
+	if (bufsize <= 0) {
+		obj->bufsize_ = 1024;
+		obj->growable_ = 1;
+	} else {
+		obj->bufsize_ = bufsize;
+		obj->growable_ = 0;
+	}
+	if (buf) {
+		obj->buf_ = (unsigned char *) buf;
+	} else {
+		obj->buf_ = jas_malloc(obj->bufsize_ * sizeof(char));
+		obj->myalloc_ = 1;
+	}
+	if (!obj->buf_) {
+		jas_stream_close(stream);
+		return 0;
+	}
+
+	if (bufsize > 0 && buf) {
+		/* If a buffer was supplied by the caller and its length is positive,
+		  make the associated buffer data appear in the stream initially. */
+		obj->len_ = bufsize;
+	} else {
+		/* The stream is initially empty. */
+		obj->len_ = 0;
+	}
+	obj->pos_ = 0;
+	
+	return stream;
+}
+
+jas_stream_t *jas_stream_fopen(const char *filename, const char *mode)
+{
+	jas_stream_t *stream;
+	int *obj;
+	int openflags;
+
+	/* Allocate a stream object. */
+	if (!(stream = jas_stream_create())) {
+		return 0;
+	}
+
+	/* Parse the mode string. */
+	stream->openmode_ = jas_strtoopenmode(mode);
+
+	/* Determine the correct flags to use for opening the file. */
+	if ((stream->openmode_ & JAS_STREAM_READ) &&
+	  (stream->openmode_ & JAS_STREAM_WRITE)) {
+		openflags = O_RDWR;
+	} else if (stream->openmode_ & JAS_STREAM_READ) {
+		openflags = O_RDONLY;
+	} else if (stream->openmode_ & JAS_STREAM_WRITE) {
+		openflags = O_WRONLY;
+	} else {
+		openflags = 0;
+	}
+	if (stream->openmode_ & JAS_STREAM_APPEND) {
+		openflags |= O_APPEND;
+	}
+	if (stream->openmode_ & JAS_STREAM_BINARY) {
+		openflags |= O_BINARY;
+	}
+	if (stream->openmode_ & JAS_STREAM_CREATE) {
+		openflags |= O_CREAT | O_TRUNC;
+	}
+
+	/* Allocate space for the underlying file stream object. */
+	if (!(obj = jas_malloc(sizeof(int)))) {
+		jas_stream_destroy(stream);
+		return 0;
+	}
+	stream->obj_ = (void *) obj;
+
+	/* Select the operations for a file stream object. */
+	stream->ops_ = &jas_stream_fileops;
+
+	/* Open the underlying file. */
+	if ((*obj = open(filename, openflags, JAS_STREAM_PERMS)) < 0) {
+		jas_stream_destroy(stream);
+		return 0;
+	}
+
+	/* By default, use full buffering for this type of stream. */
+	jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);
+
+	return stream;
+}
+
+jas_stream_t *jas_stream_freopen(const char *path, const char *mode, FILE *fp)
+{
+	jas_stream_t *stream;
+	int openflags;
+
+	/* Allocate a stream object. */
+	if (!(stream = jas_stream_create())) {
+		return 0;
+	}
+
+	/* Parse the mode string. */
+	stream->openmode_ = jas_strtoopenmode(mode);
+
+	/* Determine the correct flags to use for opening the file. */
+	if ((stream->openmode_ & JAS_STREAM_READ) &&
+	  (stream->openmode_ & JAS_STREAM_WRITE)) {
+		openflags = O_RDWR;
+	} else if (stream->openmode_ & JAS_STREAM_READ) {
+		openflags = O_RDONLY;
+	} else if (stream->openmode_ & JAS_STREAM_WRITE) {
+		openflags = O_WRONLY;
+	} else {
+		openflags = 0;
+	}
+	if (stream->openmode_ & JAS_STREAM_APPEND) {
+		openflags |= O_APPEND;
+	}
+	if (stream->openmode_ & JAS_STREAM_BINARY) {
+		openflags |= O_BINARY;
+	}
+	if (stream->openmode_ & JAS_STREAM_CREATE) {
+		openflags |= O_CREAT | O_TRUNC;
+	}
+
+	stream->obj_ = JAS_CAST(void *, fp);
+
+	/* Select the operations for a file stream object. */
+	stream->ops_ = &jas_stream_sfileops;
+
+	/* By default, use full buffering for this type of stream. */
+	jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);
+
+	return stream;
+}
+
+
+static int
+tmpfilex(void) {
+/*----------------------------------------------------------------------------
+   This is a copy of pm_tmpfile() without the libnetpbm dependencies
+   and returning a file descriptor instead of stream.
+-----------------------------------------------------------------------------*/
+    const char libname[] = "jasper";
+
+    int fd;
+    char buf[FILENAME_MAX];
+    const char * tbuf;
+    unsigned int fnamelen;
+
+    fnamelen = strlen(libname) + 10; /* "/" + "_XXXXXX\0" */
+
+    tbuf = getenv("TMPDIR");
+
+    if ((tbuf != NULL) && (strlen(tbuf) > FILENAME_MAX - fnamelen))
+        /* length of TMPDIR value too big for buf */
+        tbuf = NULL;
+
+    buf[FILENAME_MAX - fnamelen -1] = 0;
+
+    if ((tbuf == NULL) || (strlen(tbuf) == 0))
+        /* environment variable not suitable to construct file name.
+           Use default.
+        */
+        strncpy(buf, TMPDIR, sizeof(buf) - fnamelen);
+    else
+        strncpy(buf, tbuf, sizeof(buf) - fnamelen);
+
+    if (buf[strlen(buf) - 1] != '/')
+        strcat (buf, "/");
+    
+    strcat(buf, libname);
+    strcat(buf, "_XXXXXX");
+
+    fd = mkstemp(buf);
+
+    if (fd >= 0)
+        unlink(buf);
+
+    return fd;
+}
+
+jas_stream_t *jas_stream_tmpfile()
+{
+	jas_stream_t *stream;
+	int *obj;
+
+	if (!(stream = jas_stream_create())) {
+		return 0;
+	}
+
+	/* A temporary file stream is always opened for both reading and
+	writing in binary mode. */
+	stream->openmode_ = JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY;
+
+	/* Allocate memory for the underlying temporary file object. */
+	if (!(obj = jas_malloc(sizeof(int)))) {
+		jas_stream_destroy(stream);
+		return 0;
+	}
+	stream->obj_ = obj;
+    
+    /* This is a Netpbm enhancement.  Original Jasper library uses
+       tmpnam(), which is unsafe.
+    */
+    if ((*obj = tmpfilex()) < 0) {
+		jas_stream_destroy(stream);
+		return 0;
+    }
+	/* Use full buffering. */
+	jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);
+
+	stream->ops_ = &jas_stream_fileops;
+
+	return stream;
+}
+
+jas_stream_t *jas_stream_fdopen(int fd, const char *mode)
+{
+	jas_stream_t *stream;
+	int *obj;
+
+	/* Allocate a stream object. */
+	if (!(stream = jas_stream_create())) {
+		return 0;
+	}
+
+	/* Parse the mode string. */
+	stream->openmode_ = jas_strtoopenmode(mode);
+
+#if defined(WIN32)
+	/* Argh!!!  Someone ought to banish text mode (i.e., O_TEXT) to the
+	  greatest depths of purgatory! */
+	/* Ensure that the file descriptor is in binary mode, if the caller
+	  has specified the binary mode flag.  Arguably, the caller ought to
+	  take care of this, but text mode is a ugly wart anyways, so we save
+	  the caller some grief by handling this within the stream library. */
+	/* This ugliness is mainly for the benefit of those who run the
+	  JasPer software under Windows from shells that insist on opening
+	  files in text mode.  For example, in the Cygwin environment,
+	  shells often open files in text mode when I/O redirection is
+	  used.  Grr... */
+	if (stream->openmode_ & JAS_STREAM_BINARY) {
+		setmode(fd, O_BINARY);
+	}
+#endif
+
+	/* Allocate space for the underlying file stream object. */
+	if (!(obj = jas_malloc(sizeof(int)))) {
+		jas_stream_destroy(stream);
+		return 0;
+	}
+	stream->obj_ = (void *) obj;
+	*obj = fd;
+
+	/* By default, use full buffering for this type of stream. */
+	jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);
+
+	/* Select the operations for a file stream object. */
+	stream->ops_ = &jas_stream_fileops;
+
+/* Do not close the underlying file descriptor when the stream is closed. */
+	stream->openmode_ |= JAS_STREAM_NOCLOSE;
+
+	return stream;
+}
+
+static void jas_stream_destroy(jas_stream_t *stream)
+{
+	/* If the memory for the buffer was allocated with malloc, free
+	this memory. */
+	if ((stream->bufmode_ & JAS_STREAM_FREEBUF) && stream->bufbase_) {
+		jas_free(stream->bufbase_);
+		stream->bufbase_ = 0;
+	}
+	jas_free(stream);
+}
+
+int jas_stream_close(jas_stream_t *stream)
+{
+	/* Flush buffer if necessary. */
+	jas_stream_flush(stream);
+
+	/* Close the underlying stream object. */
+	if (!(stream->openmode_ & JAS_STREAM_NOCLOSE)) {
+		(*stream->ops_->close_)(stream->obj_);
+	}
+
+	jas_stream_destroy(stream);
+
+	return 0;
+}
+
+/******************************************************************************\
+* Code for reading and writing streams.
+\******************************************************************************/
+
+int jas_stream_getc_func(jas_stream_t *stream)
+{
+	assert(stream->ptr_ - stream->bufbase_ <= stream->bufsize_ +
+	  JAS_STREAM_MAXPUTBACK);
+	return jas_stream_getc_macro(stream);
+}
+
+int jas_stream_putc_func(jas_stream_t *stream, int c)
+{
+	assert(stream->ptr_ - stream->bufstart_ <= stream->bufsize_);
+	return jas_stream_putc_macro(stream, c);
+}
+
+int jas_stream_ungetc(jas_stream_t *stream, int c)
+{
+	if (!stream->ptr_ || stream->ptr_ == stream->bufbase_) {
+		return -1;
+	}
+
+	/* Reset the EOF indicator (since we now have at least one character
+	  to read). */
+	stream->flags_ &= ~JAS_STREAM_EOF;
+
+	--stream->rwcnt_;
+	--stream->ptr_;
+	++stream->cnt_;
+	*stream->ptr_ = c;
+	return 0;
+}
+
+int jas_stream_read(jas_stream_t *stream, void *buf, int cnt)
+{
+	int n;
+	int c;
+	char *bufptr;
+
+	bufptr = buf;
+
+	n = 0;
+	while (n < cnt) {
+		if ((c = jas_stream_getc(stream)) == EOF) {
+			return n;
+		}
+		*bufptr++ = c;
+		++n;
+	}
+
+	return n;
+}
+
+int jas_stream_write(jas_stream_t *stream, const void *buf, int cnt)
+{
+	int n;
+	const char *bufptr;
+
+	bufptr = buf;
+
+	n = 0;
+	while (n < cnt) {
+		if (jas_stream_putc(stream, *bufptr) == EOF) {
+			return n;
+		}
+		++bufptr;
+		++n;
+	}
+
+	return n;
+}
+
+/* Note: This function uses a fixed size buffer.  Therefore, it cannot
+  handle invocations that will produce more output than can be held
+  by the buffer. */
+int jas_stream_printf(jas_stream_t *stream, const char *fmt, ...)
+{
+	va_list ap;
+	char buf[4096];
+	int ret;
+
+	va_start(ap, fmt);
+	ret = vsprintf(buf, fmt, ap);
+	jas_stream_puts(stream, buf);
+	va_end(ap);
+	return ret;
+}
+
+int jas_stream_puts(jas_stream_t *stream, const char *s)
+{
+	while (*s != '\0') {
+		if (jas_stream_putc_macro(stream, *s) == EOF) {
+			return -1;
+		}
+		++s;
+	}
+	return 0;
+}
+
+char *jas_stream_gets(jas_stream_t *stream, char *buf, int bufsize)
+{
+	int c;
+	char *bufptr;
+	assert(bufsize > 0);
+
+	bufptr = buf;
+	while (bufsize > 1) {
+		if ((c = jas_stream_getc(stream)) == EOF) {
+			break;
+		}
+		*bufptr++ = c;
+		--bufsize;
+		if (c == '\n') {
+			break;
+		}
+	}
+	*bufptr = '\0';
+	return buf;
+}
+
+int jas_stream_gobble(jas_stream_t *stream, int n)
+{
+	int m;
+	m = n;
+	for (m = n; m > 0; --m) {
+		if (jas_stream_getc(stream) == EOF) {
+			return n - m;
+		}
+	}
+	return n;
+}
+
+/******************************************************************************\
+* Code for getting and setting the stream position.
+\******************************************************************************/
+
+int jas_stream_isseekable(jas_stream_t *stream)
+{
+	if (stream->ops_ == &jas_stream_memops) {
+		return 1;
+	} else if (stream->ops_ == &jas_stream_fileops) {
+		if ((*stream->ops_->seek_)(stream->obj_, 0, SEEK_CUR) < 0) {
+			return 0;
+		}
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+int jas_stream_rewind(jas_stream_t *stream)
+{
+	return jas_stream_seek(stream, 0, SEEK_SET);
+}
+
+long jas_stream_seek(jas_stream_t *stream, long offset, int origin)
+{
+	long newpos;
+
+	/* The buffer cannot be in use for both reading and writing. */
+	assert(!((stream->bufmode_ & JAS_STREAM_RDBUF) && (stream->bufmode_ &
+	  JAS_STREAM_WRBUF)));
+
+	/* Reset the EOF indicator (since we may not be at the EOF anymore). */
+	stream->flags_ &= ~JAS_STREAM_EOF;
+
+	if (stream->bufmode_ & JAS_STREAM_RDBUF) {
+		if (origin == SEEK_CUR) {
+			offset -= stream->cnt_;
+		}
+	} else if (stream->bufmode_ & JAS_STREAM_WRBUF) {
+		if (jas_stream_flush(stream)) {
+			return -1;
+		}
+	}
+	stream->cnt_ = 0;
+	stream->ptr_ = stream->bufstart_;
+	stream->bufmode_ &= ~(JAS_STREAM_RDBUF | JAS_STREAM_WRBUF);
+
+	if ((newpos = (*stream->ops_->seek_)(stream->obj_, offset, origin))
+	  < 0) {
+		return -1;
+	}
+
+	return newpos;
+}
+
+long jas_stream_tell(jas_stream_t *stream)
+{
+	int adjust;
+	int offset;
+
+	if (stream->bufmode_ & JAS_STREAM_RDBUF) {
+		adjust = -stream->cnt_;
+	} else if (stream->bufmode_ & JAS_STREAM_WRBUF) {
+		adjust = stream->ptr_ - stream->bufstart_;
+	} else {
+		adjust = 0;
+	}
+
+	if ((offset = (*stream->ops_->seek_)(stream->obj_, 0, SEEK_CUR)) < 0) {
+		return -1;
+	}
+
+	return offset + adjust;
+}
+
+/******************************************************************************\
+* Buffer initialization code.
+\******************************************************************************/
+
+static void jas_stream_initbuf(jas_stream_t *stream, int bufmode, char *buf,
+  int bufsize)
+{
+	/* If this function is being called, the buffer should not have been
+	  initialized yet. */
+	assert(!stream->bufbase_);
+
+	if (bufmode != JAS_STREAM_UNBUF) {
+		/* The full- or line-buffered mode is being employed. */
+		if (!buf) {
+			/* The caller has not specified a buffer to employ, so allocate
+			  one. */
+			if ((stream->bufbase_ = jas_malloc(JAS_STREAM_BUFSIZE +
+			  JAS_STREAM_MAXPUTBACK))) {
+				stream->bufmode_ |= JAS_STREAM_FREEBUF;
+				stream->bufsize_ = JAS_STREAM_BUFSIZE;
+			} else {
+				/* The buffer allocation has failed.  Resort to unbuffered
+				  operation. */
+				stream->bufbase_ = stream->tinybuf_;
+				stream->bufsize_ = 1;
+			}
+		} else {
+			/* The caller has specified a buffer to employ. */
+			/* The buffer must be large enough to accommodate maximum
+			  putback. */
+			assert(bufsize > JAS_STREAM_MAXPUTBACK);
+			stream->bufbase_ = JAS_CAST(unsigned char *, buf);
+			stream->bufsize_ = bufsize - JAS_STREAM_MAXPUTBACK;
+		}
+	} else {
+		/* The unbuffered mode is being employed. */
+		/* A buffer should not have been supplied by the caller. */
+		assert(!buf);
+		/* Use a trivial one-character buffer. */
+		stream->bufbase_ = stream->tinybuf_;
+		stream->bufsize_ = 1;
+	}
+	stream->bufstart_ = &stream->bufbase_[JAS_STREAM_MAXPUTBACK];
+	stream->ptr_ = stream->bufstart_;
+	stream->cnt_ = 0;
+	stream->bufmode_ |= bufmode & JAS_STREAM_BUFMODEMASK;
+}
+
+/******************************************************************************\
+* Buffer filling and flushing code.
+\******************************************************************************/
+
+int jas_stream_flush(jas_stream_t *stream)
+{
+	if (stream->bufmode_ & JAS_STREAM_RDBUF) {
+		return 0;
+	}
+	return jas_stream_flushbuf(stream, EOF);
+}
+
+int jas_stream_fillbuf(jas_stream_t *stream, int getflag)
+{
+	int c;
+
+	/* The stream must not be in an error or EOF state. */
+	if ((stream->flags_ & (JAS_STREAM_ERRMASK)) != 0) {
+		return EOF;
+	}
+
+	/* The stream must be open for reading. */
+	if ((stream->openmode_ & JAS_STREAM_READ) == 0) {
+		return EOF;
+	}
+
+	/* Make a half-hearted attempt to confirm that the buffer is not
+	currently being used for writing.  This check is not intended
+	to be foolproof! */
+	assert((stream->bufmode_ & JAS_STREAM_WRBUF) == 0);
+
+	assert(stream->ptr_ - stream->bufstart_ <= stream->bufsize_);
+
+	/* Mark the buffer as being used for reading. */
+	stream->bufmode_ |= JAS_STREAM_RDBUF;
+
+	/* Read new data into the buffer. */
+	stream->ptr_ = stream->bufstart_;
+	if ((stream->cnt_ = (*stream->ops_->read_)(stream->obj_,
+	  (char *) stream->bufstart_, stream->bufsize_)) <= 0) {
+		if (stream->cnt_ < 0) {
+			stream->flags_ |= JAS_STREAM_ERR;
+		} else {
+			stream->flags_ |= JAS_STREAM_EOF;
+		}
+		stream->cnt_ = 0;
+		return EOF;
+	}
+
+	assert(stream->cnt_ > 0);
+	/* Get or peek at the first character in the buffer. */
+	c = (getflag) ? jas_stream_getc2(stream) : (*stream->ptr_);
+
+	return c;
+}
+
+int jas_stream_flushbuf(jas_stream_t *stream, int c)
+{
+	int len;
+	int n;
+
+	/* The stream should not be in an error or EOF state. */
+	if ((stream->flags_ & (JAS_STREAM_ERRMASK)) != 0) {
+		return EOF;
+	}
+
+	/* The stream must be open for writing. */
+	if ((stream->openmode_ & (JAS_STREAM_WRITE | JAS_STREAM_APPEND)) == 0) {
+		return EOF;
+	}
+
+	/* The buffer should not currently be in use for reading. */
+	assert(!(stream->bufmode_ & JAS_STREAM_RDBUF));
+
+	/* Note: Do not use the quantity stream->cnt to determine the number
+	of characters in the buffer!  Depending on how this function was
+	called, the stream->cnt value may be "off-by-one". */
+	len = stream->ptr_ - stream->bufstart_;
+	if (len > 0) {
+		n = (*stream->ops_->write_)(stream->obj_, (char *)
+		  stream->bufstart_, len);
+		if (n != len) {
+			stream->flags_ |= JAS_STREAM_ERR;
+			return EOF;
+		}
+	}
+	stream->cnt_ = stream->bufsize_;
+	stream->ptr_ = stream->bufstart_;
+
+	stream->bufmode_ |= JAS_STREAM_WRBUF;
+
+	if (c != EOF) {
+		assert(stream->cnt_ > 0);
+		jas_stream_putc2(stream, c);
+	}
+
+	return 0;
+}
+
+/******************************************************************************\
+* Miscellaneous code.
+\******************************************************************************/
+
+static int jas_strtoopenmode(const char *s)
+{
+	int openmode = 0;
+	while (*s != '\0') {
+		switch (*s) {
+		case 'r':
+			openmode |= JAS_STREAM_READ;
+			break;
+		case 'w':
+			openmode |= JAS_STREAM_WRITE | JAS_STREAM_CREATE;
+			break;
+		case 'b':
+			openmode |= JAS_STREAM_BINARY;
+			break;
+		case 'a':
+			openmode |= JAS_STREAM_APPEND;
+			break;
+		case '+':
+			openmode |= JAS_STREAM_READ | JAS_STREAM_WRITE;
+			break;
+		default:
+			break;
+		}
+		++s;
+	}
+	return openmode;
+}
+
+int jas_stream_copy(jas_stream_t *out, jas_stream_t *in, int n)
+{
+	int all;
+	int c;
+	int m;
+
+	all = (n < 0) ? 1 : 0;
+
+	m = n;
+	while (all || m > 0) {
+		if ((c = jas_stream_getc_macro(in)) == EOF) {
+			/* The next character of input could not be read. */
+			/* Return with an error if an I/O error occured
+			  (not including EOF) or if an explicit copy count
+			  was specified. */
+			return (!all || jas_stream_error(in)) ? (-1) : 0;
+		}
+		if (jas_stream_putc_macro(out, c) == EOF) {
+			return -1;
+		}
+		--m;
+	}
+	return 0;
+}
+
+long jas_stream_setrwcount(jas_stream_t *stream, long rwcnt)
+{
+	int old;
+
+	old = stream->rwcnt_;
+	stream->rwcnt_ = rwcnt;
+	return old;
+}
+
+int jas_stream_display(jas_stream_t *stream, FILE *fp, int n)
+{
+	unsigned char buf[16];
+	int i;
+	int j;
+	int m;
+	int c;
+	int display;
+	int cnt;
+
+	cnt = n - (n % 16);
+	display = 1;
+
+	for (i = 0; i < n; i += 16) {
+		if (n > 16 && i > 0) {
+			display = (i >= cnt) ? 1 : 0;
+		}
+		if (display) {
+			fprintf(fp, "%08x:", i);
+		}
+		m = JAS_MIN(n - i, 16);
+		for (j = 0; j < m; ++j) {
+			if ((c = jas_stream_getc(stream)) == EOF) {
+				abort();
+				return -1;
+			}
+			buf[j] = c;
+		}
+		if (display) {
+			for (j = 0; j < m; ++j) {
+				fprintf(fp, " %02x", buf[j]);
+			}
+			fputc(' ', fp);
+			for (; j < 16; ++j) {
+				fprintf(fp, "   ");
+			}
+			for (j = 0; j < m; ++j) {
+				if (isprint(buf[j])) {
+					fputc(buf[j], fp);
+				} else {
+					fputc(' ', fp);
+				}
+			}
+			fprintf(fp, "\n");
+		}
+
+
+	}
+	return 0;
+}
+
+long jas_stream_length(jas_stream_t *stream)
+{
+	long oldpos;
+	long pos;
+	if ((oldpos = jas_stream_tell(stream)) < 0) {
+		return -1;
+	}
+	if (jas_stream_seek(stream, 0, SEEK_END) < 0) {
+		return -1;
+	}
+	if ((pos = jas_stream_tell(stream)) < 0) {
+		return -1;
+	}
+	if (jas_stream_seek(stream, oldpos, SEEK_SET) < 0) {
+		return -1;
+	}
+	return pos;
+}
+
+/******************************************************************************\
+* Memory stream object.
+\******************************************************************************/
+
+static int mem_read(jas_stream_obj_t *obj, char *buf, int cnt)
+{
+	int n;
+	jas_stream_memobj_t *m = (jas_stream_memobj_t *)obj;
+	n = m->len_ - m->pos_;
+	cnt = JAS_MIN(n, cnt);
+	memcpy(buf, &m->buf_[m->pos_], cnt);
+	m->pos_ += cnt;
+	return cnt;
+}
+
+static int mem_resize(jas_stream_memobj_t *m, int bufsize)
+{
+	unsigned char *buf;
+
+	assert(m->buf_);
+	if (!(buf = jas_realloc(m->buf_, bufsize * sizeof(unsigned char)))) {
+		return -1;
+	}
+	m->buf_ = buf;
+	m->bufsize_ = bufsize;
+	return 0;
+}
+
+static int mem_write(jas_stream_obj_t *obj, char *buf, int cnt)
+{
+	int n;
+	int ret;
+	jas_stream_memobj_t *m = (jas_stream_memobj_t *)obj;
+	long newbufsize;
+	long newpos;
+
+	newpos = m->pos_ + cnt;
+	if (newpos > m->bufsize_ && m->growable_) {
+		newbufsize = m->bufsize_;
+		while (newbufsize < newpos) {
+			newbufsize <<= 1;
+			assert(newbufsize >= 0);
+		}
+		if (mem_resize(m, newbufsize)) {
+			return -1;
+		}
+	}
+	if (m->pos_ > m->len_) {
+		/* The current position is beyond the end of the file, so
+		  pad the file to the current position with zeros. */
+		n = JAS_MIN(m->pos_, m->bufsize_) - m->len_;
+		if (n > 0) {
+			memset(&m->buf_[m->len_], 0, n);
+			m->len_ += n;
+		}
+		if (m->pos_ != m->len_) {
+			/* The buffer is not big enough. */
+			return 0;
+		}
+	}
+	n = m->bufsize_ - m->pos_;
+	ret = JAS_MIN(n, cnt);
+	if (ret > 0) {
+		memcpy(&m->buf_[m->pos_], buf, ret);
+		m->pos_ += ret;
+	}
+	if (m->pos_ > m->len_) {
+		m->len_ = m->pos_;
+	}
+assert(ret == cnt);
+	return ret;
+}
+
+static long mem_seek(jas_stream_obj_t *obj, long offset, int origin)
+{
+	jas_stream_memobj_t *m = (jas_stream_memobj_t *)obj;
+	long newpos;
+
+	switch (origin) {
+	case SEEK_SET:
+		newpos = offset;
+		break;
+	case SEEK_END:
+		newpos = m->len_ - offset;
+		break;
+	case SEEK_CUR:
+		newpos = m->pos_ + offset;
+		break;
+	default:
+		abort();
+		break;
+	}
+	if (newpos < 0) {
+		return -1;
+	}
+	m->pos_ = newpos;
+
+	return m->pos_;
+}
+
+static int mem_close(jas_stream_obj_t *obj)
+{
+	jas_stream_memobj_t *m = (jas_stream_memobj_t *)obj;
+	if (m->myalloc_ && m->buf_) {
+		jas_free(m->buf_);
+		m->buf_ = 0;
+	}
+	jas_free(obj);
+	return 0;
+}
+
+/******************************************************************************\
+* File stream object.
+\******************************************************************************/
+
+static int file_read(jas_stream_obj_t *obj, char *buf, int cnt)
+{
+	int fd;
+	fd = *((int *)obj);
+	return read(fd, buf, cnt);
+}
+
+static int file_write(jas_stream_obj_t *obj, char *buf, int cnt)
+{
+	int fd;
+	fd = *((int *)obj);
+	return write(fd, buf, cnt);
+}
+
+static long file_seek(jas_stream_obj_t *obj, long offset, int origin)
+{
+	int fd;
+	fd = *((int *)obj);
+	return lseek(fd, offset, origin);
+}
+
+static int file_close(jas_stream_obj_t *obj)
+{
+	int fd;
+	fd = *((int *)obj);
+	jas_free(obj);
+	return close(fd);
+}
+
+/******************************************************************************\
+* Stdio file stream object.
+\******************************************************************************/
+
+static int sfile_read(jas_stream_obj_t *obj, char *buf, int cnt)
+{
+	FILE *fp;
+	fp = JAS_CAST(FILE *, obj);
+	return fread(buf, 1, cnt, fp);
+}
+
+static int sfile_write(jas_stream_obj_t *obj, char *buf, int cnt)
+{
+	FILE *fp;
+	fp = JAS_CAST(FILE *, obj);
+	return fwrite(buf, 1, cnt, fp);
+}
+
+static long sfile_seek(jas_stream_obj_t *obj, long offset, int origin)
+{
+	FILE *fp;
+	fp = JAS_CAST(FILE *, obj);
+	return fseek(fp, offset, origin);
+}
+
+static int sfile_close(jas_stream_obj_t *obj)
+{
+	FILE *fp;
+	fp = JAS_CAST(FILE *, obj);
+	return fclose(fp);
+}