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- /*
- * cdjpeg.h
- *
- * Copyright (C) 1994, 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_color_map RdCMap
- #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));
-
- /* Other global routines */
-
- EXTERN void read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
-