mirror of
https://github.com/GRRLIB/GRRLIB.git
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[CHG] libjpeg updated to version 8c
This commit is contained in:
Crayon2000
parent
38a8a153e4
commit
05adb413a2
6 changed files with 346 additions and 299 deletions
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@ -1,187 +1,187 @@
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/*
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* cdjpeg.h
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*
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* Copyright (C) 1994-1997, Thomas G. Lane.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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*
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* This file contains common declarations for the sample applications
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* cjpeg and djpeg. It is NOT used by the core JPEG library.
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*/
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#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */
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#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
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#include "jinclude.h"
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#include "jpeglib.h"
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#include "jerror.h" /* get library error codes too */
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#include "cderror.h" /* get application-specific error codes */
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/*
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* Object interface for cjpeg's source file decoding modules
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*/
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typedef struct cjpeg_source_struct * cjpeg_source_ptr;
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struct cjpeg_source_struct {
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JMETHOD(void, start_input, (j_compress_ptr cinfo,
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cjpeg_source_ptr sinfo));
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JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
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cjpeg_source_ptr sinfo));
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JMETHOD(void, finish_input, (j_compress_ptr cinfo,
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cjpeg_source_ptr sinfo));
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FILE *input_file;
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JSAMPARRAY buffer;
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JDIMENSION buffer_height;
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};
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/*
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* Object interface for djpeg's output file encoding modules
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*/
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typedef struct djpeg_dest_struct * djpeg_dest_ptr;
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struct djpeg_dest_struct {
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/* start_output is called after jpeg_start_decompress finishes.
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* The color map will be ready at this time, if one is needed.
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*/
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JMETHOD(void, start_output, (j_decompress_ptr cinfo,
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djpeg_dest_ptr dinfo));
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/* Emit the specified number of pixel rows from the buffer. */
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JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
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djpeg_dest_ptr dinfo,
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JDIMENSION rows_supplied));
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/* Finish up at the end of the image. */
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JMETHOD(void, finish_output, (j_decompress_ptr cinfo,
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djpeg_dest_ptr dinfo));
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/* Target file spec; filled in by djpeg.c after object is created. */
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FILE * output_file;
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/* Output pixel-row buffer. Created by module init or start_output.
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* Width is cinfo->output_width * cinfo->output_components;
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* height is buffer_height.
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*/
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JSAMPARRAY buffer;
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JDIMENSION buffer_height;
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};
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/*
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* cjpeg/djpeg may need to perform extra passes to convert to or from
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* the source/destination file format. The JPEG library does not know
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* about these passes, but we'd like them to be counted by the progress
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* monitor. We use an expanded progress monitor object to hold the
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* additional pass count.
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*/
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struct cdjpeg_progress_mgr {
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struct jpeg_progress_mgr pub; /* fields known to JPEG library */
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int completed_extra_passes; /* extra passes completed */
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int total_extra_passes; /* total extra */
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/* last printed percentage stored here to avoid multiple printouts */
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int percent_done;
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};
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typedef struct cdjpeg_progress_mgr * cd_progress_ptr;
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/* Short forms of external names for systems with brain-damaged linkers. */
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#ifdef NEED_SHORT_EXTERNAL_NAMES
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#define jinit_read_bmp jIRdBMP
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#define jinit_write_bmp jIWrBMP
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#define jinit_read_gif jIRdGIF
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#define jinit_write_gif jIWrGIF
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#define jinit_read_ppm jIRdPPM
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#define jinit_write_ppm jIWrPPM
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#define jinit_read_rle jIRdRLE
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#define jinit_write_rle jIWrRLE
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#define jinit_read_targa jIRdTarga
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#define jinit_write_targa jIWrTarga
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#define read_quant_tables RdQTables
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#define read_scan_script RdScnScript
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#define set_quality_ratings SetQRates
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#define set_quant_slots SetQSlots
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#define set_sample_factors SetSFacts
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#define read_color_map RdCMap
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#define enable_signal_catcher EnSigCatcher
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#define start_progress_monitor StProgMon
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#define end_progress_monitor EnProgMon
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#define read_stdin RdStdin
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#define write_stdout WrStdout
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#endif /* NEED_SHORT_EXTERNAL_NAMES */
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/* Module selection routines for I/O modules. */
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EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo,
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boolean is_os2));
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EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo));
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EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo));
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EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo));
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EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo));
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/* cjpeg support routines (in rdswitch.c) */
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EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
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boolean force_baseline));
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EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
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EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg,
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boolean force_baseline));
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EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
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EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg));
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/* djpeg support routines (in rdcolmap.c) */
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EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
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/* common support routines (in cdjpeg.c) */
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EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo));
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EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo,
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cd_progress_ptr progress));
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EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo));
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EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars));
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EXTERN(FILE *) read_stdin JPP((void));
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EXTERN(FILE *) write_stdout JPP((void));
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/* miscellaneous useful macros */
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#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
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#define READ_BINARY "r"
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#define WRITE_BINARY "w"
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#else
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#ifdef VMS /* VMS is very nonstandard */
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#define READ_BINARY "rb", "ctx=stm"
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#define WRITE_BINARY "wb", "ctx=stm"
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#else /* standard ANSI-compliant case */
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#define READ_BINARY "rb"
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#define WRITE_BINARY "wb"
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#endif
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#endif
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#ifndef EXIT_FAILURE /* define exit() codes if not provided */
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#define EXIT_FAILURE 1
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#endif
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#ifndef EXIT_SUCCESS
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#ifdef VMS
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#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
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#else
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#define EXIT_SUCCESS 0
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#endif
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#endif
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#ifndef EXIT_WARNING
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#ifdef VMS
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#define EXIT_WARNING 1 /* VMS is very nonstandard */
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#else
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#define EXIT_WARNING 2
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#endif
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#endif
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/*
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* cdjpeg.h
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*
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* Copyright (C) 1994-1997, Thomas G. Lane.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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*
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* This file contains common declarations for the sample applications
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* cjpeg and djpeg. It is NOT used by the core JPEG library.
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*/
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#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */
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#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
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#include "jinclude.h"
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#include "jpeglib.h"
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#include "jerror.h" /* get library error codes too */
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#include "cderror.h" /* get application-specific error codes */
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/*
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* Object interface for cjpeg's source file decoding modules
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*/
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typedef struct cjpeg_source_struct * cjpeg_source_ptr;
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struct cjpeg_source_struct {
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JMETHOD(void, start_input, (j_compress_ptr cinfo,
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cjpeg_source_ptr sinfo));
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JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
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cjpeg_source_ptr sinfo));
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JMETHOD(void, finish_input, (j_compress_ptr cinfo,
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cjpeg_source_ptr sinfo));
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FILE *input_file;
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JSAMPARRAY buffer;
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JDIMENSION buffer_height;
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};
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/*
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* Object interface for djpeg's output file encoding modules
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*/
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typedef struct djpeg_dest_struct * djpeg_dest_ptr;
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struct djpeg_dest_struct {
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/* start_output is called after jpeg_start_decompress finishes.
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* The color map will be ready at this time, if one is needed.
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*/
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JMETHOD(void, start_output, (j_decompress_ptr cinfo,
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djpeg_dest_ptr dinfo));
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/* Emit the specified number of pixel rows from the buffer. */
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JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
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djpeg_dest_ptr dinfo,
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JDIMENSION rows_supplied));
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/* Finish up at the end of the image. */
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JMETHOD(void, finish_output, (j_decompress_ptr cinfo,
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djpeg_dest_ptr dinfo));
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/* Target file spec; filled in by djpeg.c after object is created. */
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FILE * output_file;
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/* Output pixel-row buffer. Created by module init or start_output.
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* Width is cinfo->output_width * cinfo->output_components;
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* height is buffer_height.
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*/
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JSAMPARRAY buffer;
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JDIMENSION buffer_height;
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};
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/*
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* cjpeg/djpeg may need to perform extra passes to convert to or from
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* the source/destination file format. The JPEG library does not know
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* about these passes, but we'd like them to be counted by the progress
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* monitor. We use an expanded progress monitor object to hold the
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* additional pass count.
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*/
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struct cdjpeg_progress_mgr {
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struct jpeg_progress_mgr pub; /* fields known to JPEG library */
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int completed_extra_passes; /* extra passes completed */
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int total_extra_passes; /* total extra */
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/* last printed percentage stored here to avoid multiple printouts */
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int percent_done;
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};
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typedef struct cdjpeg_progress_mgr * cd_progress_ptr;
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/* Short forms of external names for systems with brain-damaged linkers. */
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#ifdef NEED_SHORT_EXTERNAL_NAMES
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#define jinit_read_bmp jIRdBMP
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#define jinit_write_bmp jIWrBMP
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#define jinit_read_gif jIRdGIF
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#define jinit_write_gif jIWrGIF
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#define jinit_read_ppm jIRdPPM
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#define jinit_write_ppm jIWrPPM
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#define jinit_read_rle jIRdRLE
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#define jinit_write_rle jIWrRLE
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#define jinit_read_targa jIRdTarga
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#define jinit_write_targa jIWrTarga
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#define read_quant_tables RdQTables
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#define read_scan_script RdScnScript
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#define set_quality_ratings SetQRates
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#define set_quant_slots SetQSlots
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#define set_sample_factors SetSFacts
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#define read_color_map RdCMap
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#define enable_signal_catcher EnSigCatcher
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#define start_progress_monitor StProgMon
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#define end_progress_monitor EnProgMon
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#define read_stdin RdStdin
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#define write_stdout WrStdout
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#endif /* NEED_SHORT_EXTERNAL_NAMES */
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/* Module selection routines for I/O modules. */
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EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo,
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boolean is_os2));
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EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo));
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EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo));
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EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo));
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EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo));
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EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo));
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/* cjpeg support routines (in rdswitch.c) */
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EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
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boolean force_baseline));
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EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
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EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg,
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boolean force_baseline));
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EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
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EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg));
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/* djpeg support routines (in rdcolmap.c) */
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EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
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/* common support routines (in cdjpeg.c) */
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EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo));
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EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo,
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cd_progress_ptr progress));
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EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo));
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EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars));
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EXTERN(FILE *) read_stdin JPP((void));
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EXTERN(FILE *) write_stdout JPP((void));
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/* miscellaneous useful macros */
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#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
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#define READ_BINARY "r"
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#define WRITE_BINARY "w"
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#else
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#ifdef VMS /* VMS is very nonstandard */
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#define READ_BINARY "rb", "ctx=stm"
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#define WRITE_BINARY "wb", "ctx=stm"
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#else /* standard ANSI-compliant case */
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#define READ_BINARY "rb"
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#define WRITE_BINARY "wb"
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#endif
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#endif
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#ifndef EXIT_FAILURE /* define exit() codes if not provided */
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#define EXIT_FAILURE 1
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#endif
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#ifndef EXIT_SUCCESS
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#ifdef VMS
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#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
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#else
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#define EXIT_SUCCESS 0
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#endif
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#endif
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#ifndef EXIT_WARNING
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#ifdef VMS
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#define EXIT_WARNING 1 /* VMS is very nonstandard */
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#else
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#define EXIT_WARNING 2
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#endif
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#endif
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@ -2,7 +2,7 @@
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* cjpeg.c
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*
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* Copyright (C) 1991-1998, Thomas G. Lane.
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* Modified 2003-2008 by Guido Vollbeding.
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* Modified 2003-2010 by Guido Vollbeding.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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*
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@ -165,6 +165,9 @@ usage (void)
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fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
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#endif
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fprintf(stderr, "Switches for advanced users:\n");
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#ifdef DCT_SCALING_SUPPORTED
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fprintf(stderr, " -block N DCT block size (1..16; default is 8)\n");
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#endif
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#ifdef DCT_ISLOW_SUPPORTED
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fprintf(stderr, " -dct int Use integer DCT method%s\n",
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(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
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@ -254,10 +257,30 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
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exit(EXIT_FAILURE);
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#endif
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} else if (keymatch(arg, "baseline", 1)) {
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} else if (keymatch(arg, "baseline", 2)) {
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/* Force baseline-compatible output (8-bit quantizer values). */
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force_baseline = TRUE;
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} else if (keymatch(arg, "block", 2)) {
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/* Set DCT block size. */
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#if defined(DCT_SCALING_SUPPORTED) && defined(JPEG_LIB_VERSION_MAJOR) && \
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(JPEG_LIB_VERSION_MAJOR > 8 || (JPEG_LIB_VERSION_MAJOR == 8 && \
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defined(JPEG_LIB_VERSION_MINOR) && JPEG_LIB_VERSION_MINOR >= 3))
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int val;
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (sscanf(argv[argn], "%d", &val) != 1)
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usage();
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if (val < 1 || val > 16)
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usage();
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cinfo->block_size = val;
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#else
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fprintf(stderr, "%s: sorry, block size setting not supported\n",
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progname);
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exit(EXIT_FAILURE);
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#endif
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} else if (keymatch(arg, "dct", 2)) {
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/* Select DCT algorithm. */
|
||||
if (++argn >= argc) /* advance to next argument */
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
* jcmarker.c
|
||||
*
|
||||
* Copyright (C) 1991-1998, Thomas G. Lane.
|
||||
* Modified 2003-2009 by Guido Vollbeding.
|
||||
* Modified 2003-2010 by Guido Vollbeding.
|
||||
* This file is part of the Independent JPEG Group's software.
|
||||
* For conditions of distribution and use, see the accompanying README file.
|
||||
*
|
||||
|
|
@ -231,10 +231,10 @@ emit_dac (j_compress_ptr cinfo)
|
|||
char ac_in_use[NUM_ARITH_TBLS];
|
||||
int length, i;
|
||||
jpeg_component_info *compptr;
|
||||
|
||||
|
||||
for (i = 0; i < NUM_ARITH_TBLS; i++)
|
||||
dc_in_use[i] = ac_in_use[i] = 0;
|
||||
|
||||
|
||||
for (i = 0; i < cinfo->comps_in_scan; i++) {
|
||||
compptr = cinfo->cur_comp_info[i];
|
||||
/* DC needs no table for refinement scan */
|
||||
|
|
@ -244,23 +244,25 @@ emit_dac (j_compress_ptr cinfo)
|
|||
if (cinfo->Se)
|
||||
ac_in_use[compptr->ac_tbl_no] = 1;
|
||||
}
|
||||
|
||||
|
||||
length = 0;
|
||||
for (i = 0; i < NUM_ARITH_TBLS; i++)
|
||||
length += dc_in_use[i] + ac_in_use[i];
|
||||
|
||||
emit_marker(cinfo, M_DAC);
|
||||
|
||||
emit_2bytes(cinfo, length*2 + 2);
|
||||
|
||||
for (i = 0; i < NUM_ARITH_TBLS; i++) {
|
||||
if (dc_in_use[i]) {
|
||||
emit_byte(cinfo, i);
|
||||
emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
|
||||
}
|
||||
if (ac_in_use[i]) {
|
||||
emit_byte(cinfo, i + 0x10);
|
||||
emit_byte(cinfo, cinfo->arith_ac_K[i]);
|
||||
|
||||
if (length) {
|
||||
emit_marker(cinfo, M_DAC);
|
||||
|
||||
emit_2bytes(cinfo, length*2 + 2);
|
||||
|
||||
for (i = 0; i < NUM_ARITH_TBLS; i++) {
|
||||
if (dc_in_use[i]) {
|
||||
emit_byte(cinfo, i);
|
||||
emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
|
||||
}
|
||||
if (ac_in_use[i]) {
|
||||
emit_byte(cinfo, i + 0x10);
|
||||
emit_byte(cinfo, cinfo->arith_ac_K[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif /* C_ARITH_CODING_SUPPORTED */
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
* jcmaster.c
|
||||
*
|
||||
* Copyright (C) 1991-1997, Thomas G. Lane.
|
||||
* Modified 2003-2010 by Guido Vollbeding.
|
||||
* Modified 2003-2011 by Guido Vollbeding.
|
||||
* This file is part of the Independent JPEG Group's software.
|
||||
* For conditions of distribution and use, see the accompanying README file.
|
||||
*
|
||||
|
|
@ -55,125 +55,140 @@ jpeg_calc_jpeg_dimensions (j_compress_ptr cinfo)
|
|||
{
|
||||
#ifdef DCT_SCALING_SUPPORTED
|
||||
|
||||
/* Sanity check on input image dimensions to prevent overflow in
|
||||
* following calculation.
|
||||
* We do check jpeg_width and jpeg_height in initial_setup below,
|
||||
* but image_width and image_height can come from arbitrary data,
|
||||
* and we need some space for multiplication by block_size.
|
||||
*/
|
||||
if (((long) cinfo->image_width >> 24) || ((long) cinfo->image_height >> 24))
|
||||
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
|
||||
|
||||
/* Compute actual JPEG image dimensions and DCT scaling choices. */
|
||||
if (cinfo->scale_num >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/1 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width << 3;
|
||||
cinfo->jpeg_height = cinfo->image_height << 3;
|
||||
if (cinfo->scale_num >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/1 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width * cinfo->block_size;
|
||||
cinfo->jpeg_height = cinfo->image_height * cinfo->block_size;
|
||||
cinfo->min_DCT_h_scaled_size = 1;
|
||||
cinfo->min_DCT_v_scaled_size = 1;
|
||||
} else if (cinfo->scale_num >= cinfo->scale_denom * 4) {
|
||||
/* Provide 4/1 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width << 2;
|
||||
cinfo->jpeg_height = cinfo->image_height << 2;
|
||||
} else if (cinfo->scale_num * 2 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/2 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 2L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 2L);
|
||||
cinfo->min_DCT_h_scaled_size = 2;
|
||||
cinfo->min_DCT_v_scaled_size = 2;
|
||||
} else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/3 scaling */
|
||||
cinfo->jpeg_width = (cinfo->image_width << 1) + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 2, 3L);
|
||||
cinfo->jpeg_height = (cinfo->image_height << 1) + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 2, 3L);
|
||||
} else if (cinfo->scale_num * 3 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/3 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 3L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 3L);
|
||||
cinfo->min_DCT_h_scaled_size = 3;
|
||||
cinfo->min_DCT_v_scaled_size = 3;
|
||||
} else if (cinfo->scale_num >= cinfo->scale_denom * 2) {
|
||||
/* Provide 2/1 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width << 1;
|
||||
cinfo->jpeg_height = cinfo->image_height << 1;
|
||||
} else if (cinfo->scale_num * 4 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/4 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 4L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 4L);
|
||||
cinfo->min_DCT_h_scaled_size = 4;
|
||||
cinfo->min_DCT_v_scaled_size = 4;
|
||||
} else if (cinfo->scale_num * 5 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/5 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 3, 5L);
|
||||
cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 3, 5L);
|
||||
} else if (cinfo->scale_num * 5 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/5 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 5L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 5L);
|
||||
cinfo->min_DCT_h_scaled_size = 5;
|
||||
cinfo->min_DCT_v_scaled_size = 5;
|
||||
} else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 4) {
|
||||
/* Provide 4/3 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width, 3L);
|
||||
cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height, 3L);
|
||||
} else if (cinfo->scale_num * 6 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/6 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 6L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 6L);
|
||||
cinfo->min_DCT_h_scaled_size = 6;
|
||||
cinfo->min_DCT_v_scaled_size = 6;
|
||||
} else if (cinfo->scale_num * 7 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/7 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width, 7L);
|
||||
cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height, 7L);
|
||||
} else if (cinfo->scale_num * 7 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/7 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 7L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 7L);
|
||||
cinfo->min_DCT_h_scaled_size = 7;
|
||||
cinfo->min_DCT_v_scaled_size = 7;
|
||||
} else if (cinfo->scale_num >= cinfo->scale_denom) {
|
||||
/* Provide 1/1 scaling */
|
||||
cinfo->jpeg_width = cinfo->image_width;
|
||||
cinfo->jpeg_height = cinfo->image_height;
|
||||
} else if (cinfo->scale_num * 8 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/8 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 8L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 8L);
|
||||
cinfo->min_DCT_h_scaled_size = 8;
|
||||
cinfo->min_DCT_v_scaled_size = 8;
|
||||
} else if (cinfo->scale_num * 9 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/9 scaling */
|
||||
} else if (cinfo->scale_num * 9 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/9 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 8, 9L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 9L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 8, 9L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 9L);
|
||||
cinfo->min_DCT_h_scaled_size = 9;
|
||||
cinfo->min_DCT_v_scaled_size = 9;
|
||||
} else if (cinfo->scale_num * 5 >= cinfo->scale_denom * 4) {
|
||||
/* Provide 4/5 scaling */
|
||||
} else if (cinfo->scale_num * 10 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/10 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 4, 5L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 10L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 4, 5L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 10L);
|
||||
cinfo->min_DCT_h_scaled_size = 10;
|
||||
cinfo->min_DCT_v_scaled_size = 10;
|
||||
} else if (cinfo->scale_num * 11 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/11 scaling */
|
||||
} else if (cinfo->scale_num * 11 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/11 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 8, 11L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 11L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 8, 11L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 11L);
|
||||
cinfo->min_DCT_h_scaled_size = 11;
|
||||
cinfo->min_DCT_v_scaled_size = 11;
|
||||
} else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 2) {
|
||||
/* Provide 2/3 scaling */
|
||||
} else if (cinfo->scale_num * 12 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/12 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 2, 3L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 12L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 2, 3L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 12L);
|
||||
cinfo->min_DCT_h_scaled_size = 12;
|
||||
cinfo->min_DCT_v_scaled_size = 12;
|
||||
} else if (cinfo->scale_num * 13 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/13 scaling */
|
||||
} else if (cinfo->scale_num * 13 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/13 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 8, 13L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 13L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 8, 13L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 13L);
|
||||
cinfo->min_DCT_h_scaled_size = 13;
|
||||
cinfo->min_DCT_v_scaled_size = 13;
|
||||
} else if (cinfo->scale_num * 7 >= cinfo->scale_denom * 4) {
|
||||
/* Provide 4/7 scaling */
|
||||
} else if (cinfo->scale_num * 14 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/14 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 4, 7L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 14L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 4, 7L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 14L);
|
||||
cinfo->min_DCT_h_scaled_size = 14;
|
||||
cinfo->min_DCT_v_scaled_size = 14;
|
||||
} else if (cinfo->scale_num * 15 >= cinfo->scale_denom * 8) {
|
||||
/* Provide 8/15 scaling */
|
||||
} else if (cinfo->scale_num * 15 >= cinfo->scale_denom * cinfo->block_size) {
|
||||
/* Provide block_size/15 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width * 8, 15L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 15L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height * 8, 15L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 15L);
|
||||
cinfo->min_DCT_h_scaled_size = 15;
|
||||
cinfo->min_DCT_v_scaled_size = 15;
|
||||
} else {
|
||||
/* Provide 1/2 scaling */
|
||||
/* Provide block_size/16 scaling */
|
||||
cinfo->jpeg_width = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_width, 2L);
|
||||
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 16L);
|
||||
cinfo->jpeg_height = (JDIMENSION)
|
||||
jdiv_round_up((long) cinfo->image_height, 2L);
|
||||
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 16L);
|
||||
cinfo->min_DCT_h_scaled_size = 16;
|
||||
cinfo->min_DCT_v_scaled_size = 16;
|
||||
}
|
||||
|
|
@ -193,25 +208,11 @@ jpeg_calc_jpeg_dimensions (j_compress_ptr cinfo)
|
|||
LOCAL(void)
|
||||
jpeg_calc_trans_dimensions (j_compress_ptr cinfo)
|
||||
{
|
||||
if (cinfo->min_DCT_h_scaled_size < 1 || cinfo->min_DCT_h_scaled_size > 16
|
||||
|| cinfo->min_DCT_h_scaled_size != cinfo->min_DCT_v_scaled_size)
|
||||
if (cinfo->min_DCT_h_scaled_size != cinfo->min_DCT_v_scaled_size)
|
||||
ERREXIT2(cinfo, JERR_BAD_DCTSIZE,
|
||||
cinfo->min_DCT_h_scaled_size, cinfo->min_DCT_v_scaled_size);
|
||||
|
||||
cinfo->block_size = cinfo->min_DCT_h_scaled_size;
|
||||
|
||||
switch (cinfo->block_size) {
|
||||
case 2: cinfo->natural_order = jpeg_natural_order2; break;
|
||||
case 3: cinfo->natural_order = jpeg_natural_order3; break;
|
||||
case 4: cinfo->natural_order = jpeg_natural_order4; break;
|
||||
case 5: cinfo->natural_order = jpeg_natural_order5; break;
|
||||
case 6: cinfo->natural_order = jpeg_natural_order6; break;
|
||||
case 7: cinfo->natural_order = jpeg_natural_order7; break;
|
||||
default: cinfo->natural_order = jpeg_natural_order; break;
|
||||
}
|
||||
|
||||
cinfo->lim_Se = cinfo->block_size < DCTSIZE ?
|
||||
cinfo->block_size * cinfo->block_size - 1 : DCTSIZE2-1;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -229,6 +230,25 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only)
|
|||
else
|
||||
jpeg_calc_jpeg_dimensions(cinfo);
|
||||
|
||||
/* Sanity check on block_size */
|
||||
if (cinfo->block_size < 1 || cinfo->block_size > 16)
|
||||
ERREXIT2(cinfo, JERR_BAD_DCTSIZE, cinfo->block_size, cinfo->block_size);
|
||||
|
||||
/* Derive natural_order from block_size */
|
||||
switch (cinfo->block_size) {
|
||||
case 2: cinfo->natural_order = jpeg_natural_order2; break;
|
||||
case 3: cinfo->natural_order = jpeg_natural_order3; break;
|
||||
case 4: cinfo->natural_order = jpeg_natural_order4; break;
|
||||
case 5: cinfo->natural_order = jpeg_natural_order5; break;
|
||||
case 6: cinfo->natural_order = jpeg_natural_order6; break;
|
||||
case 7: cinfo->natural_order = jpeg_natural_order7; break;
|
||||
default: cinfo->natural_order = jpeg_natural_order; break;
|
||||
}
|
||||
|
||||
/* Derive lim_Se from block_size */
|
||||
cinfo->lim_Se = cinfo->block_size < DCTSIZE ?
|
||||
cinfo->block_size * cinfo->block_size - 1 : DCTSIZE2-1;
|
||||
|
||||
/* Sanity check on image dimensions */
|
||||
if (cinfo->jpeg_height <= 0 || cinfo->jpeg_width <= 0 ||
|
||||
cinfo->num_components <= 0 || cinfo->input_components <= 0)
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
* jpeglib.h
|
||||
*
|
||||
* Copyright (C) 1991-1998, Thomas G. Lane.
|
||||
* Modified 2002-2009 by Guido Vollbeding.
|
||||
* Modified 2002-2010 by Guido Vollbeding.
|
||||
* This file is part of the Independent JPEG Group's software.
|
||||
* For conditions of distribution and use, see the accompanying README file.
|
||||
*
|
||||
|
|
@ -33,11 +33,13 @@ extern "C" {
|
|||
#endif
|
||||
#endif
|
||||
|
||||
/* Version ID for the JPEG library.
|
||||
/* Version IDs for the JPEG library.
|
||||
* Might be useful for tests like "#if JPEG_LIB_VERSION >= 80".
|
||||
*/
|
||||
|
||||
#define JPEG_LIB_VERSION 80 /* Version 8.0 */
|
||||
#define JPEG_LIB_VERSION 80 /* Compatibility version 8.0 */
|
||||
#define JPEG_LIB_VERSION_MAJOR 8
|
||||
#define JPEG_LIB_VERSION_MINOR 3
|
||||
|
||||
|
||||
/* Various constants determining the sizes of things.
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
/*
|
||||
* jversion.h
|
||||
*
|
||||
* Copyright (C) 1991-2010, Thomas G. Lane, Guido Vollbeding.
|
||||
* Copyright (C) 1991-2011, Thomas G. Lane, Guido Vollbeding.
|
||||
* This file is part of the Independent JPEG Group's software.
|
||||
* For conditions of distribution and use, see the accompanying README file.
|
||||
*
|
||||
|
|
@ -9,6 +9,6 @@
|
|||
*/
|
||||
|
||||
|
||||
#define JVERSION "8b 16-May-2010"
|
||||
#define JVERSION "8c 16-Jan-2011"
|
||||
|
||||
#define JCOPYRIGHT "Copyright (C) 2010, Thomas G. Lane, Guido Vollbeding"
|
||||
#define JCOPYRIGHT "Copyright (C) 2011, Thomas G. Lane, Guido Vollbeding"
|
||||
|
|
|
|||
Loading…
Reference in a new issue