cdjpeg.h

来自「ESS3890+SL原代码（1*16内存）」· C头文件 代码 · 共 247 行

/* Copyright 2000, ESS Technology, Inc.                                 */
/* SCCSID @(#)cdjpeg.h	1.1 10/16/01 */

/* Based on DVD/SVCD version 	1.1 12/01/00 */

/* $Id$ */

/*
 * $Log$
 */


/*
 * cdjpeg.h
 *
 * Copyright (C) 1994-1995, Thomas G. Lane.
 * This file is part of the Independent JPEG Group's software.
 * For conditions of distribution and use, see the accompanying README file.
 *
 * This file contains common declarations for the sample applications
 * cjpeg and djpeg.  It is NOT used by the core JPEG library.
 */
#ifndef __JPGE_CD_H__
#define __JPEG_CD_H__
#define JPEG_CJPEG_DJPEG	/* define proper options in jconfig.h */
#define JPEG_INTERNAL_OPTIONS	/* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
#include "jinclude.h"
#include "jpeglib.h"
#include "jerror.h"		/* get library error codes too */
#include "cderror.h"		/* get application-specific error codes */

/*#include "../lib_browser/browser_config.h"*/


/*
 * Object interface for cjpeg's source file decoding modules
 */
typedef struct cjpeg_source_struct * cjpeg_source_ptr;

struct cjpeg_source_struct {
  JMETHOD(void, start_input, (j_compress_ptr cinfo,
			      cjpeg_source_ptr sinfo));
  JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
				       cjpeg_source_ptr sinfo));
  JMETHOD(void, finish_input, (j_compress_ptr cinfo,
			       cjpeg_source_ptr sinfo));

  FILE *input_file;

  JSAMPARRAY buffer;
  JDIMENSION buffer_height;
};


/*
 * Object interface for djpeg's output file encoding modules
 */

typedef struct djpeg_dest_struct * djpeg_dest_ptr;

struct djpeg_dest_struct {
  /* start_output is called after jpeg_start_decompress finishes.
   * The color map will be ready at this time, if one is needed.
   */
  JMETHOD(void, start_output, (j_decompress_ptr cinfo,
			       djpeg_dest_ptr dinfo));
  /* Emit the specified number of pixel rows from the buffer. */
  JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
				 djpeg_dest_ptr dinfo,
				 JDIMENSION rows_supplied));
  /* Finish up at the end of the image. */
  JMETHOD(void, finish_output, (j_decompress_ptr cinfo,
				djpeg_dest_ptr dinfo));

  /* Target file spec; filled in by djpeg.c after object is created. */
  FILE * output_file;

  /* Output pixel-row buffer.  Created by module init or start_output.
   * Width is cinfo->output_width * cinfo->output_components;
   * height is buffer_height.
   */
  JSAMPARRAY buffer;
  JDIMENSION buffer_height;
};


typedef struct {
  struct djpeg_dest_struct pub; /* public fields */
  ImageStruct *pJpgImage ; /*used to store the Image STRUCT IN ORDER TO USE IN THE FUTURE*/
  char * bmp_buf ; /* used to save the bmp */

  my_boolean is_os2;            /* saves the OS2 format request flag */
  int output_status; /*used to save the status of the output  */

  jvirt_sarray_ptr whole_image; /* needed to reverse row order */
  JDIMENSION data_width;        /* JSAMPLEs per row */
  JDIMENSION row_width;         /* physical width of one row in the BMP file */
  int pad_bytes;                /* number of padding bytes needed per row */
  JDIMENSION cur_output_row;    /* next row# to write to virtual array */
  int final_width;				/* for ESS downsampling */
  int final_height;
  int final_block_height;
  int downsample;
  int compressed_bmp;
  int compressed_size;			/* for profile */
  int rows_per_block;
  int cur_block_row;
  int cur_block;
  char *block_buf;
  char *compressed_block;
  short *HashTable;
  char *rbuf;
  char *gbuf;
  char *bbuf;
} bmp_dest_struct;

typedef bmp_dest_struct * bmp_dest_ptr;


/*
 * cjpeg/djpeg may need to perform extra passes to convert to or from
 * the source/destination file format.  The JPEG library does not know
 * about these passes, but we'd like them to be counted by the progress
 * monitor.  We use an expanded progress monitor object to hold the
 * additional pass count.
 */

struct cdjpeg_progress_mgr {
  struct jpeg_progress_mgr pub;	/* fields known to JPEG library */
  int completed_extra_passes;	/* extra passes completed */
  int total_extra_passes;	/* total extra */
  /* last printed percentage stored here to avoid multiple printouts */
  int percent_done;
};

typedef struct cdjpeg_progress_mgr * cd_progress_ptr;

#ifdef INC_DECODE
typedef struct {
  j_decompress_ptr pCInfo ;   
  struct my_error_mgr * pErrMgr ;
  djpeg_dest_ptr * pDestPtr ;
  char *outputBuf ; /*to store the pointer to the output data */
  int Lastsize ; /*used to record the data of lasttime which passed to the decorder*/
  char * buffer   ; /* to store the where the data come from the caller */
  int  FileSize ; /* to store the data size in the buffer */
  int  headeronly; /*Used to indicate read the header only */
  int  dest_height; 
}DECOMPRESS_DATA , * DECOMPRESS_DATA_PTR ;

#endif

/* Short forms of external names for systems with brain-damaged linkers. */

#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jinit_read_bmp		jIRdBMP
#define jinit_write_bmp		jIWrBMP
#define jinit_read_gif		jIRdGIF
#define jinit_write_gif		jIWrGIF
#define jinit_read_ppm		jIRdPPM
#define jinit_write_ppm		jIWrPPM
#define jinit_read_rle		jIRdRLE
#define jinit_write_rle		jIWrRLE
#define jinit_read_targa	jIRdTarga
#define jinit_write_targa	jIWrTarga
#define read_quant_tables	RdQTables
#define read_scan_script	RdScnScript
#define set_quant_slots		SetQSlots
#define set_sample_factors	SetSFacts
#define read_color_map		RdCMap
#define enable_signal_catcher	EnSigCatcher
#define start_progress_monitor	StProgMon
#define end_progress_monitor	EnProgMon
#define read_stdin		RdStdin
#define write_stdout		WrStdout
#endif /* NEED_SHORT_EXTERNAL_NAMES */

/* Module selection routines for I/O modules. */

EXTERN cjpeg_source_ptr jinit_read_bmp JPP((j_compress_ptr cinfo));
#ifdef INC_DECODE
EXTERN djpeg_dest_ptr jinit_write_bmp JPP((j_decompress_ptr cinfo,
					   int w, int h,ImageStruct * pImgStr));
#else
EXTERN djpeg_dest_ptr jinit_write_bmp JPP((j_decompress_ptr cinfo,
					   my_boolean is_os2));
#endif
EXTERN cjpeg_source_ptr jinit_read_gif JPP((j_compress_ptr cinfo));
EXTERN djpeg_dest_ptr jinit_write_gif JPP((j_decompress_ptr cinfo));
EXTERN cjpeg_source_ptr jinit_read_ppm JPP((j_compress_ptr cinfo));
EXTERN djpeg_dest_ptr jinit_write_ppm JPP((j_decompress_ptr cinfo));
EXTERN cjpeg_source_ptr jinit_read_rle JPP((j_compress_ptr cinfo));
EXTERN djpeg_dest_ptr jinit_write_rle JPP((j_decompress_ptr cinfo));
EXTERN cjpeg_source_ptr jinit_read_targa JPP((j_compress_ptr cinfo));
EXTERN djpeg_dest_ptr jinit_write_targa JPP((j_decompress_ptr cinfo));

/* cjpeg support routines (in rdswitch.c) */

EXTERN my_boolean read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
				   int scale_factor, my_boolean force_baseline));
EXTERN my_boolean read_scan_script JPP((j_compress_ptr cinfo, char * filename));
EXTERN my_boolean set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
EXTERN my_boolean set_sample_factors JPP((j_compress_ptr cinfo, char *arg));

/* djpeg support routines (in rdcolmap.c) */

EXTERN void read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));

/* common support routines (in cdjpeg.c) */

EXTERN void enable_signal_catcher JPP((j_common_ptr cinfo));
EXTERN void start_progress_monitor JPP((j_common_ptr cinfo,
					cd_progress_ptr progress));
EXTERN void end_progress_monitor JPP((j_common_ptr cinfo));
EXTERN my_boolean keymatch JPP((char * arg, const char * keyword, int minchars));
EXTERN FILE * read_stdin JPP((void));
EXTERN FILE * write_stdout JPP((void));

/* miscellaneous useful macros */

#ifdef DONT_USE_B_MODE		/* define mode parameters for fopen() */
#define READ_BINARY	"r"
#define WRITE_BINARY	"w"
#else
#define READ_BINARY	"rb"
#define WRITE_BINARY	"wb"
#endif

#ifndef EXIT_FAILURE		/* define exit() codes if not provided */
#define EXIT_FAILURE  1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS  1		/* VMS is very nonstandard */
#else
#define EXIT_SUCCESS  0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING  1		/* VMS is very nonstandard */
#else
#define EXIT_WARNING  2
#endif
#endif
#endif