| /* |
| * cdjpeg.h |
| * |
| * This file was part of the Independent JPEG Group's software: |
| * Copyright (C) 1994-1997, Thomas G. Lane. |
| * Modified 2019 by Guido Vollbeding. |
| * libjpeg-turbo Modifications: |
| * Copyright (C) 2017, 2019, D. R. Commander. |
| * For conditions of distribution and use, see the accompanying README.ijg |
| * 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 { |
| void (*start_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo); |
| JDIMENSION (*get_pixel_rows) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo); |
| 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. |
| */ |
| void (*start_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo); |
| /* Emit the specified number of pixel rows from the buffer. */ |
| void (*put_pixel_rows) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, |
| JDIMENSION rows_supplied); |
| /* Finish up at the end of the image. */ |
| void (*finish_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo); |
| /* Re-calculate buffer dimensions based on output dimensions (for use with |
| partial image decompression.) If this is NULL, then the output format |
| does not support partial image decompression (BMP, in particular, cannot |
| support partial decompression because it uses an inversion buffer to write |
| the image in bottom-up order.) */ |
| void (*calc_buffer_dimensions) (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 */ |
| JDIMENSION max_scans; /* abort if the number of scans exceeds this |
| value and the value is non-zero */ |
| boolean report; /* whether or not to report progress */ |
| /* last printed percentage stored here to avoid multiple printouts */ |
| int percent_done; |
| }; |
| |
| typedef struct cdjpeg_progress_mgr *cd_progress_ptr; |
| |
| |
| /* Module selection routines for I/O modules. */ |
| |
| EXTERN(cjpeg_source_ptr) jinit_read_bmp(j_compress_ptr cinfo, |
| boolean use_inversion_array); |
| EXTERN(djpeg_dest_ptr) jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2, |
| boolean use_inversion_array); |
| EXTERN(cjpeg_source_ptr) jinit_read_gif(j_compress_ptr cinfo); |
| EXTERN(djpeg_dest_ptr) jinit_write_gif(j_decompress_ptr cinfo, boolean is_lzw); |
| EXTERN(cjpeg_source_ptr) jinit_read_ppm(j_compress_ptr cinfo); |
| EXTERN(djpeg_dest_ptr) jinit_write_ppm(j_decompress_ptr cinfo); |
| EXTERN(cjpeg_source_ptr) jinit_read_targa(j_compress_ptr cinfo); |
| EXTERN(djpeg_dest_ptr) jinit_write_targa(j_decompress_ptr cinfo); |
| |
| /* cjpeg support routines (in rdswitch.c) */ |
| |
| EXTERN(boolean) read_quant_tables(j_compress_ptr cinfo, char *filename, |
| boolean force_baseline); |
| EXTERN(boolean) read_scan_script(j_compress_ptr cinfo, char *filename); |
| EXTERN(boolean) set_quality_ratings(j_compress_ptr cinfo, char *arg, |
| boolean force_baseline); |
| EXTERN(boolean) set_quant_slots(j_compress_ptr cinfo, char *arg); |
| EXTERN(boolean) set_sample_factors(j_compress_ptr cinfo, char *arg); |
| |
| /* djpeg support routines (in rdcolmap.c) */ |
| |
| EXTERN(void) read_color_map(j_decompress_ptr cinfo, FILE *infile); |
| |
| /* common support routines (in cdjpeg.c) */ |
| |
| EXTERN(void) start_progress_monitor(j_common_ptr cinfo, |
| cd_progress_ptr progress); |
| EXTERN(void) end_progress_monitor(j_common_ptr cinfo); |
| EXTERN(boolean) keymatch(char *arg, const char *keyword, int minchars); |
| EXTERN(FILE *) read_stdin(void); |
| EXTERN(FILE *) write_stdout(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 |
| #define EXIT_SUCCESS 0 |
| #endif |
| #ifndef EXIT_WARNING |
| #define EXIT_WARNING 2 |
| #endif |
| |
| #define IsExtRGB(cs) \ |
| (cs == JCS_RGB || (cs >= JCS_EXT_RGB && cs <= JCS_EXT_ARGB)) |