/* * cdjpeg.h * * Copyright (C) 1994-1996, 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. */#define JPEG_CJPEG_DJPEG	/* define proper options in jconfig.h */#define JPEG_INTERNAL_OPTIONS	/* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */#include "jpeglib.h"#include "jpg.h"		/* get library error codes too *//* * 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;};/* * 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;/* Module selection routines for I/O modules. */EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo));EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo,					    boolean is_os2));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(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,				    int scale_factor, boolean force_baseline));EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));EXTERN(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(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#define EXIT_SUCCESS  0#endif#ifndef EXIT_WARNING#define EXIT_WARNING  2#endif