1 /* 2 * cdjpeg.h 3 * 4 * This file was part of the Independent JPEG Group's software: 5 * Copyright (C) 1994-1997, Thomas G. Lane. 6 * It was modified by The libjpeg-turbo Project to include only code relevant 7 * to libjpeg-turbo. 8 * For conditions of distribution and use, see the accompanying README file. 9 * 10 * This file contains common declarations for the sample applications 11 * cjpeg and djpeg. It is NOT used by the core JPEG library. 12 */ 13 14 #define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */ 15 #define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */ 16 #include "jinclude.h" 17 #include "jpeglib.h" 18 #include "jerror.h" /* get library error codes too */ 19 #include "cderror.h" /* get application-specific error codes */ 20 21 22 /* 23 * Object interface for cjpeg's source file decoding modules 24 */ 25 26 typedef struct cjpeg_source_struct * cjpeg_source_ptr; 27 28 struct cjpeg_source_struct { 29 void (*start_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo); 30 JDIMENSION (*get_pixel_rows) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo); 31 void (*finish_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo); 32 33 FILE *input_file; 34 35 JSAMPARRAY buffer; 36 JDIMENSION buffer_height; 37 }; 38 39 40 /* 41 * Object interface for djpeg's output file encoding modules 42 */ 43 44 typedef struct djpeg_dest_struct * djpeg_dest_ptr; 45 46 struct djpeg_dest_struct { 47 /* start_output is called after jpeg_start_decompress finishes. 48 * The color map will be ready at this time, if one is needed. 49 */ 50 void (*start_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo); 51 /* Emit the specified number of pixel rows from the buffer. */ 52 void (*put_pixel_rows) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, 53 JDIMENSION rows_supplied); 54 /* Finish up at the end of the image. */ 55 void (*finish_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo); 56 57 /* Target file spec; filled in by djpeg.c after object is created. */ 58 FILE * output_file; 59 60 /* Output pixel-row buffer. Created by module init or start_output. 61 * Width is cinfo->output_width * cinfo->output_components; 62 * height is buffer_height. 63 */ 64 JSAMPARRAY buffer; 65 JDIMENSION buffer_height; 66 }; 67 68 69 /* 70 * cjpeg/djpeg may need to perform extra passes to convert to or from 71 * the source/destination file format. The JPEG library does not know 72 * about these passes, but we'd like them to be counted by the progress 73 * monitor. We use an expanded progress monitor object to hold the 74 * additional pass count. 75 */ 76 77 struct cdjpeg_progress_mgr { 78 struct jpeg_progress_mgr pub; /* fields known to JPEG library */ 79 int completed_extra_passes; /* extra passes completed */ 80 int total_extra_passes; /* total extra */ 81 /* last printed percentage stored here to avoid multiple printouts */ 82 int percent_done; 83 }; 84 85 typedef struct cdjpeg_progress_mgr * cd_progress_ptr; 86 87 88 /* Module selection routines for I/O modules. */ 89 90 EXTERN(cjpeg_source_ptr) jinit_read_bmp (j_compress_ptr cinfo); 91 EXTERN(djpeg_dest_ptr) jinit_write_bmp (j_decompress_ptr cinfo, 92 boolean is_os2); 93 EXTERN(cjpeg_source_ptr) jinit_read_gif (j_compress_ptr cinfo); 94 EXTERN(djpeg_dest_ptr) jinit_write_gif (j_decompress_ptr cinfo); 95 EXTERN(cjpeg_source_ptr) jinit_read_ppm (j_compress_ptr cinfo); 96 EXTERN(djpeg_dest_ptr) jinit_write_ppm (j_decompress_ptr cinfo); 97 EXTERN(cjpeg_source_ptr) jinit_read_rle (j_compress_ptr cinfo); 98 EXTERN(djpeg_dest_ptr) jinit_write_rle (j_decompress_ptr cinfo); 99 EXTERN(cjpeg_source_ptr) jinit_read_targa (j_compress_ptr cinfo); 100 EXTERN(djpeg_dest_ptr) jinit_write_targa (j_decompress_ptr cinfo); 101 102 /* cjpeg support routines (in rdswitch.c) */ 103 104 EXTERN(boolean) read_quant_tables (j_compress_ptr cinfo, char * filename, 105 boolean force_baseline); 106 EXTERN(boolean) read_scan_script (j_compress_ptr cinfo, char * filename); 107 EXTERN(boolean) set_quality_ratings (j_compress_ptr cinfo, char *arg, 108 boolean force_baseline); 109 EXTERN(boolean) set_quant_slots (j_compress_ptr cinfo, char *arg); 110 EXTERN(boolean) set_sample_factors (j_compress_ptr cinfo, char *arg); 111 112 /* djpeg support routines (in rdcolmap.c) */ 113 114 EXTERN(void) read_color_map (j_decompress_ptr cinfo, FILE * infile); 115 116 /* common support routines (in cdjpeg.c) */ 117 118 EXTERN(void) enable_signal_catcher (j_common_ptr cinfo); 119 EXTERN(void) start_progress_monitor (j_common_ptr cinfo, 120 cd_progress_ptr progress); 121 EXTERN(void) end_progress_monitor (j_common_ptr cinfo); 122 EXTERN(boolean) keymatch (char * arg, const char * keyword, int minchars); 123 EXTERN(FILE *) read_stdin (void); 124 EXTERN(FILE *) write_stdout (void); 125 126 /* miscellaneous useful macros */ 127 128 #ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ 129 #define READ_BINARY "r" 130 #define WRITE_BINARY "w" 131 #else 132 #define READ_BINARY "rb" 133 #define WRITE_BINARY "wb" 134 #endif 135 136 #ifndef EXIT_FAILURE /* define exit() codes if not provided */ 137 #define EXIT_FAILURE 1 138 #endif 139 #ifndef EXIT_SUCCESS 140 #define EXIT_SUCCESS 0 141 #endif 142 #ifndef EXIT_WARNING 143 #define EXIT_WARNING 2 144 #endif 145
