Subversion Repositories openrisc

/*

 * 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_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,

                                    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

#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