You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
188 lines
6.1 KiB
188 lines
6.1 KiB
14 years ago
|
/*
|
||
|
|
* cdjpeg.h
|
||
|
|
*
|
||
|
|
* Copyright (C) 1994-1997, 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 "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
|
||
|
|
*/
|
||
|
|
|
||
|
|
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;
|
||
|
|
|
||
|
|
|
||
|
|
/* 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_quality_ratings SetQRates
|
||
|
|
#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));
|
||
|
|
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,
|
||
|
|
boolean force_baseline));
|
||
|
|
EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
|
||
|
|
EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg,
|
||
|
|
boolean force_baseline));
|
||
|
|
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
|
||
|
|
#ifdef VMS /* VMS is very nonstandard */
|
||
|
|
#define READ_BINARY "rb", "ctx=stm"
|
||
|
|
#define WRITE_BINARY "wb", "ctx=stm"
|
||
|
|
#else /* standard ANSI-compliant case */
|
||
|
|
#define READ_BINARY "rb"
|
||
|
|
#define WRITE_BINARY "wb"
|
||
|
|
#endif
|
||
|
|
#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
|