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/* Copyright (C) 2003-2004 artofcode LLC. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: sjpx.h,v 1.5 2005/05/17 20:56:46 giles Exp $ */
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/* Definitions for JPXDecode filter (JPEG 2000) */
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/* we link to the JasPer library for the actual decoding */
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#ifndef sjpx_INCLUDED
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# define sjpx_INCLUDED
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/* Requires scommon.h; strimpl.h if any templates are referenced */
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#include "scommon.h"
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#include <jasper/jasper.h>
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/* Our local state consists of pointers to the JasPer library's
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* stream and image structs for sending and retrieving the
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* image data. There's no way to feed a jasper stream with
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* incremental buffers, so we also must spool the entire
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* compressed stream into our own buffer before handing it
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* to the library. We also keep track of how much of the
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* decoded image we have returned.
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*/
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typedef struct stream_jpxd_state_s
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{
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stream_state_common; /* a define from scommon.h */
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jas_image_t *image;
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jas_stream_t *stream;
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long offset; /* offset into the image bitmap of the next
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byte to be returned */
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const gs_memory_t *jpx_memory;
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unsigned char *buffer; /* temporary buffer for compressed data */
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long bufsize; /* total size of the buffer */
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long buffill; /* number of bytes written into the buffer */
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}
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stream_jpxd_state;
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#define private_st_jpxd_state() \
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gs_private_st_simple(st_jpxd_state, stream_jpxd_state,\
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"JPXDecode filter state")
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extern const stream_template s_jpxd_template;
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#endif /* sjpx_INCLUDED */
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