chromium/third_party/libjpeg_turbo/cdjpeg.h

/*
 * cdjpeg.h
 *
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1994-1997, Thomas G. Lane.
 * Modified 2019 by Guido Vollbeding.
 * libjpeg-turbo Modifications:
 * Copyright (C) 2017, 2019, 2021, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * 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 JPEG_INTERNAL_OPTIONS …
#include "jinclude.h"
#include "jpeglib.h"
#include "jerror.h"             /* get library error codes too */
#include "cderror.h"            /* get application-specific error codes */


/*
 * Object interface for cjpeg's source file decoding modules
 */

cjpeg_source_ptr;

struct cjpeg_source_struct { … };


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

djpeg_dest_ptr;

struct djpeg_dest_struct { … };


/*
 * 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 { … };

cd_progress_ptr;


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

EXTERN(cjpeg_source_ptr) jinit_read_bmp(j_compress_ptr cinfo,
                                        boolean use_inversion_array);
EXTERN(djpeg_dest_ptr) jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2,
                                       boolean use_inversion_array);
EXTERN(cjpeg_source_ptr) jinit_read_gif(j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_gif(j_decompress_ptr cinfo, boolean is_lzw);
EXTERN(cjpeg_source_ptr) jinit_read_ppm(j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_ppm(j_decompress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_targa(j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_targa(j_decompress_ptr cinfo);

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

EXTERN(boolean) read_quant_tables(j_compress_ptr cinfo, char *filename,
                                  boolean force_baseline);
EXTERN(boolean) read_scan_script(j_compress_ptr cinfo, char *filename);
EXTERN(boolean) set_quality_ratings(j_compress_ptr cinfo, char *arg,
                                    boolean force_baseline);
EXTERN(boolean) set_quant_slots(j_compress_ptr cinfo, char *arg);
EXTERN(boolean) set_sample_factors(j_compress_ptr cinfo, char *arg);

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

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

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

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

/* miscellaneous useful macros */

#ifdef DONT_USE_B_MODE          /* define mode parameters for fopen() */
#define READ_BINARY …
#define WRITE_BINARY …
#else
#define READ_BINARY …
#define WRITE_BINARY …
#endif

#ifndef EXIT_FAILURE            /* define exit() codes if not provided */
#define EXIT_FAILURE …
#endif
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS …
#endif
#ifndef EXIT_WARNING
#define EXIT_WARNING …
#endif

#define IsExtRGB(cs) …