CDJPEG.h
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上传用户:cjw5120
上传日期:2022-05-11
资源大小:5032k
文件大小:7k
源码类别:
网络截获/分析
开发平台:
Visual C++
- ////////////////////////////////////////////////////////////////////////
- //
- // Note : this file is included as part of the Smaller Animals Software
- // JpegFile package. Though this file has not been modified from it's
- // original IJG 6a form, it is not the responsibility on the Independent
- // JPEG Group to answer questions regarding this code.
- //
- // Any questions you have about this code should be addressed to :
- //
- // CHRISDL@PAGESZ.NET - the distributor of this package.
- //
- // Remember, by including this code in the JpegFile package, Smaller
- // Animals Software assumes all responsibilities for answering questions
- // about it. If we (SA Software) can't answer your questions ourselves, we
- // will direct you to people who can.
- //
- // Thanks, CDL.
- //
- ////////////////////////////////////////////////////////////////////////
- /*
- * 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 "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_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,
- unsigned int 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(unsigned int) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
- int scale_factor, unsigned int force_baseline));
- EXTERN(unsigned int) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
- EXTERN(unsigned int) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
- EXTERN(unsigned int) 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(unsigned int) 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