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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6417 | ashmew2 | 1 | /* |
| 2 | * cdjpeg.h |
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| 3 | * |
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| 4 | * Copyright (C) 1994-1997, Thomas G. Lane. |
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| 5 | * This file is part of the Independent JPEG Group's software. |
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| 6 | * For conditions of distribution and use, see the accompanying README file. |
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| 7 | * |
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| 8 | * This file contains common declarations for the sample applications |
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| 9 | * cjpeg and djpeg. It is NOT used by the core JPEG library. |
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| 10 | */ |
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| 11 | |||
| 12 | #define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */ |
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| 13 | #define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */ |
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| 14 | #include "jinclude.h" |
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| 15 | #include "jpeglib.h" |
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| 16 | #include "jerror.h" /* get library error codes too */ |
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| 17 | #include "cderror.h" /* get application-specific error codes */ |
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| 18 | |||
| 19 | |||
| 20 | /* |
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| 21 | * Object interface for cjpeg's source file decoding modules |
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| 22 | */ |
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| 23 | |||
| 24 | typedef struct cjpeg_source_struct * cjpeg_source_ptr; |
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| 25 | |||
| 26 | struct cjpeg_source_struct { |
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| 27 | JMETHOD(void, start_input, (j_compress_ptr cinfo, |
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| 28 | cjpeg_source_ptr sinfo)); |
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| 29 | JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, |
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| 30 | cjpeg_source_ptr sinfo)); |
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| 31 | JMETHOD(void, finish_input, (j_compress_ptr cinfo, |
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| 32 | cjpeg_source_ptr sinfo)); |
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| 33 | |||
| 34 | FILE *input_file; |
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| 35 | |||
| 36 | JSAMPARRAY buffer; |
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| 37 | JDIMENSION buffer_height; |
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| 38 | }; |
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| 39 | |||
| 40 | |||
| 41 | /* |
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| 42 | * Object interface for djpeg's output file encoding modules |
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| 43 | */ |
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| 44 | |||
| 45 | typedef struct djpeg_dest_struct * djpeg_dest_ptr; |
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| 46 | |||
| 47 | struct djpeg_dest_struct { |
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| 48 | /* start_output is called after jpeg_start_decompress finishes. |
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| 49 | * The color map will be ready at this time, if one is needed. |
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| 50 | */ |
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| 51 | JMETHOD(void, start_output, (j_decompress_ptr cinfo, |
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| 52 | djpeg_dest_ptr dinfo)); |
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| 53 | /* Emit the specified number of pixel rows from the buffer. */ |
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| 54 | JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo, |
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| 55 | djpeg_dest_ptr dinfo, |
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| 56 | JDIMENSION rows_supplied)); |
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| 57 | /* Finish up at the end of the image. */ |
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| 58 | JMETHOD(void, finish_output, (j_decompress_ptr cinfo, |
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| 59 | djpeg_dest_ptr dinfo)); |
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| 60 | |||
| 61 | /* Target file spec; filled in by djpeg.c after object is created. */ |
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| 62 | FILE * output_file; |
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| 63 | |||
| 64 | /* Output pixel-row buffer. Created by module init or start_output. |
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| 65 | * Width is cinfo->output_width * cinfo->output_components; |
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| 66 | * height is buffer_height. |
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| 67 | */ |
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| 68 | JSAMPARRAY buffer; |
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| 69 | JDIMENSION buffer_height; |
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| 70 | }; |
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| 71 | |||
| 72 | |||
| 73 | /* |
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| 74 | * cjpeg/djpeg may need to perform extra passes to convert to or from |
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| 75 | * the source/destination file format. The JPEG library does not know |
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| 76 | * about these passes, but we'd like them to be counted by the progress |
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| 77 | * monitor. We use an expanded progress monitor object to hold the |
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| 78 | * additional pass count. |
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| 79 | */ |
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| 80 | |||
| 81 | struct cdjpeg_progress_mgr { |
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| 82 | struct jpeg_progress_mgr pub; /* fields known to JPEG library */ |
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| 83 | int completed_extra_passes; /* extra passes completed */ |
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| 84 | int total_extra_passes; /* total extra */ |
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| 85 | /* last printed percentage stored here to avoid multiple printouts */ |
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| 86 | int percent_done; |
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| 87 | }; |
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| 88 | |||
| 89 | typedef struct cdjpeg_progress_mgr * cd_progress_ptr; |
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| 90 | |||
| 91 | |||
| 92 | /* Short forms of external names for systems with brain-damaged linkers. */ |
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| 93 | |||
| 94 | #ifdef NEED_SHORT_EXTERNAL_NAMES |
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| 95 | #define jinit_read_bmp jIRdBMP |
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| 96 | #define jinit_write_bmp jIWrBMP |
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| 97 | #define jinit_read_gif jIRdGIF |
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| 98 | #define jinit_write_gif jIWrGIF |
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| 99 | #define jinit_read_ppm jIRdPPM |
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| 100 | #define jinit_write_ppm jIWrPPM |
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| 101 | #define jinit_read_rle jIRdRLE |
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| 102 | #define jinit_write_rle jIWrRLE |
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| 103 | #define jinit_read_targa jIRdTarga |
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| 104 | #define jinit_write_targa jIWrTarga |
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| 105 | #define read_quant_tables RdQTables |
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| 106 | #define read_scan_script RdScnScript |
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| 107 | #define set_quant_slots SetQSlots |
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| 108 | #define set_sample_factors SetSFacts |
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| 109 | #define read_color_map RdCMap |
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| 110 | #define enable_signal_catcher EnSigCatcher |
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| 111 | #define start_progress_monitor StProgMon |
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| 112 | #define end_progress_monitor EnProgMon |
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| 113 | #define read_stdin RdStdin |
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| 114 | #define write_stdout WrStdout |
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| 115 | #endif /* NEED_SHORT_EXTERNAL_NAMES */ |
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| 116 | |||
| 117 | /* Module selection routines for I/O modules. */ |
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| 118 | |||
| 119 | EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo)); |
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| 120 | EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo, |
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| 121 | boolean is_os2)); |
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| 122 | EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo)); |
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| 123 | EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo)); |
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| 124 | EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo)); |
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| 125 | EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo)); |
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| 126 | EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo)); |
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| 127 | EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo)); |
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| 128 | EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo)); |
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| 129 | EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo)); |
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| 130 | |||
| 131 | /* cjpeg support routines (in rdswitch.c) */ |
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| 132 | |||
| 133 | EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename, |
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| 134 | int scale_factor, boolean force_baseline)); |
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| 135 | EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename)); |
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| 136 | EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg)); |
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| 137 | EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg)); |
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| 138 | |||
| 139 | /* djpeg support routines (in rdcolmap.c) */ |
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| 140 | |||
| 141 | EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile)); |
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| 142 | |||
| 143 | /* common support routines (in cdjpeg.c) */ |
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| 144 | |||
| 145 | EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo)); |
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| 146 | EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo, |
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| 147 | cd_progress_ptr progress)); |
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| 148 | EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo)); |
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| 149 | EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars)); |
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| 150 | EXTERN(FILE *) read_stdin JPP((void)); |
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| 151 | EXTERN(FILE *) write_stdout JPP((void)); |
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| 152 | |||
| 153 | /* miscellaneous useful macros */ |
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| 154 | |||
| 155 | #ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ |
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| 156 | #define READ_BINARY "r" |
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| 157 | #define WRITE_BINARY "w" |
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| 158 | #else |
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| 159 | #ifdef VMS /* VMS is very nonstandard */ |
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| 160 | #define READ_BINARY "rb", "ctx=stm" |
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| 161 | #define WRITE_BINARY "wb", "ctx=stm" |
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| 162 | #else /* standard ANSI-compliant case */ |
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| 163 | #define READ_BINARY "rb" |
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| 164 | #define WRITE_BINARY "wb" |
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| 165 | #endif |
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| 166 | #endif |
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| 167 | |||
| 168 | #ifndef EXIT_FAILURE /* define exit() codes if not provided */ |
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| 169 | #define EXIT_FAILURE 1 |
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| 170 | #endif |
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| 171 | #ifndef EXIT_SUCCESS |
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| 172 | #ifdef VMS |
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| 173 | #define EXIT_SUCCESS 1 /* VMS is very nonstandard */ |
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| 174 | #else |
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| 175 | #define EXIT_SUCCESS 0 |
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| 176 | #endif |
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| 177 | #endif |
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| 178 | #ifndef EXIT_WARNING |
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| 179 | #ifdef VMS |
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| 180 | #define EXIT_WARNING 1 /* VMS is very nonstandard */ |
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| 181 | #else |
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| 182 | #define EXIT_WARNING 2 |
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| 183 | #endif |
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| 184 | #endif |