jpegmark.h

JPEG连续色调静止图像无损压缩的最新标准JPEG LS的C语言实现

/* SPMG/JPEG-LS IMPLEMENTATION V.2.1
   =====================================
   These programs are Copyright (c) University of British Columbia. All rights reserved.
   They may be freely redistributed in their entirety provided that this copyright
   notice is not removed. THEY MAY NOT BE SOLD FOR PROFIT OR INCORPORATED IN
   COMMERCIAL PROGRAMS WITHOUT THE WRITTEN PERMISSION OF THE COPYRIGHT HOLDER.
   Each program is provided as is, without any express or implied warranty,
   without even the warranty of fitness for a particular purpose.

   =========================================================
   THIS SOFTWARE IS BASED ON HP's implementation of jpeg-ls:
   =========================================================

   LOCO-I/JPEG-LS IMPLEMENTATION V.0.90
   -------------------------------------------------------------------------------
   (c) COPYRIGHT HEWLETT-PACKARD COMPANY, 1995-1999.
        HEWLETT-PACKARD COMPANY ("HP") DOES NOT WARRANT THE ACCURACY OR
   COMPLETENESS OF THE INFORMATION GIVEN HERE.  ANY USE MADE OF, OR
   RELIANCE ON, SUCH INFORMATION IS ENTIRELY AT USER'S OWN RISK.
        BY DOWNLOADING THE LOCO-I/JPEG-LS COMPRESSORS/DECOMPRESSORS
   ("THE SOFTWARE") YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS
   OF THIS LICENSING AGREEMENT.
        YOU MAY DOWNLOAD AND USE THE SOFTWARE FOR NON-COMMERCIAL PURPOSES
   FREE OF CHARGE OR FURTHER OBLIGATION.  YOU MAY NOT, DIRECTLY OR
   INDIRECTLY, DISTRIBUTE THE SOFTWARE FOR A FEE, INCORPORATE THIS
   SOFTWARE INTO ANY PRODUCT OFFERED FOR SALE, OR USE THE SOFTWARE
   TO PROVIDE A SERVICE FOR WHICH A FEE IS CHARGED.
        YOU MAY MAKE COPIES OF THE SOFTWARE AND DISTRIBUTE SUCH COPIES TO
   OTHER PERSONS PROVIDED THAT SUCH COPIES ARE ACCOMPANIED BY
   HEWLETT-PACKARD'S COPYRIGHT NOTICE AND THIS AGREEMENT AND THAT
   SUCH OTHER PERSONS AGREE TO BE BOUND BY THE TERMS OF THIS AGREEMENT.
        THE SOFTWARE IS NOT OF PRODUCT QUALITY AND MAY HAVE ERRORS OR DEFECTS.
   THE JPEG-LS STANDARD IS STILL UNDER DEVELOPMENT. THE SOFTWARE IS NOT A
   FINAL OR FULL IMPLEMENTATION OF THE STANDARD.  HP GIVES NO EXPRESS OR
   IMPLIED WARRANTY OF ANY KIND AND ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY AND FITNESS FOR PURPOSE ARE DISCLAIMED.
        HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
   OR CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE.
   -------------------------------------------------------------------------------
*/

/* jpegmark.h --- for JPEG markers
 *
 * Initial code by Alex Jakulin,  Aug. 1995
 *
 * Modified and optimized: Gadiel Seroussi, October 1995
 *
 * Color Enhancement: Guillermo Sapiro, August 1996
 *
 * Modified and added Restart marker and input tables by:
 * David Cheng-Hsiu Chu, and Ismail R. Ismail march 1999
 */

#define BUFINPUT
#ifndef BIG_ENDIAN
#	define BIG_ENDIAN
#endif

/*  Marker identifiers */

#define	SOI		0xFFD8	/* start of image */
#define EOI		0xFFD9	/* end of image */

#define SOS		0xFFDA  /* Start of scan */
#define DNL		0xFFDC  /* Define number of lines */
#define DRI		0xFFDD  /* Define restart interval */
#define RSTm		0xFFD0  /* Restart marker (FFD0-FFD7) */
#define COM		0xFFFE	/* Comment */


/* JPEG-LS specific */
#define SOF_LS		0xFFF7	/* Start of JPEG-LS regular frame */
#define LSE		0xFFF8	/* JPEG-LS extension marker */
#define LSE_PARAMS	1	/* Marker type within LSE - parameters */
#define LSE_MAPTABLE	2	/* Marker type within LSE - map tables */
#define LSE_XMAPTABLE	3	/* Marker type within LSE - map table continuation */
#define LSE_XY	        4	/* Marker type within LSE - image dimensions */


/* Functions to write markers */
int write_n_bytes(FILE *out, int value, int n);
int write_2_bytes(FILE *out, int value);
int write_marker(FILE *out, int marker);
int write_jpegls_frame(FILE *out, jpeg_ls_header *jp);
int write_jpegls_scan(FILE *out, jpeg_ls_header *jp);
int write_jpegls_extmarker(FILE *out, jpeg_ls_header *jp, int IDtype, char *mapfilename);