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Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jpeglib.h')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jpeglib.h | 2320 |
1 files changed, 1160 insertions, 1160 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jpeglib.h b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jpeglib.h index 5fc43d8..1327cff 100644 --- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jpeglib.h +++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jpeglib.h | |||
@@ -1,1160 +1,1160 @@ | |||
1 | /* | 1 | /* |
2 | * jpeglib.h | 2 | * jpeglib.h |
3 | * | 3 | * |
4 | * Copyright (C) 1991-1998, Thomas G. Lane. | 4 | * Copyright (C) 1991-1998, Thomas G. Lane. |
5 | * Modified 2002-2011 by Guido Vollbeding. | 5 | * Modified 2002-2011 by Guido Vollbeding. |
6 | * This file is part of the Independent JPEG Group's software. | 6 | * This file is part of the Independent JPEG Group's software. |
7 | * For conditions of distribution and use, see the accompanying README file. | 7 | * For conditions of distribution and use, see the accompanying README file. |
8 | * | 8 | * |
9 | * This file defines the application interface for the JPEG library. | 9 | * This file defines the application interface for the JPEG library. |
10 | * Most applications using the library need only include this file, | 10 | * Most applications using the library need only include this file, |
11 | * and perhaps jerror.h if they want to know the exact error codes. | 11 | * and perhaps jerror.h if they want to know the exact error codes. |
12 | */ | 12 | */ |
13 | 13 | ||
14 | #ifndef JPEGLIB_H | 14 | #ifndef JPEGLIB_H |
15 | #define JPEGLIB_H | 15 | #define JPEGLIB_H |
16 | 16 | ||
17 | /* | 17 | /* |
18 | * First we include the configuration files that record how this | 18 | * First we include the configuration files that record how this |
19 | * installation of the JPEG library is set up. jconfig.h can be | 19 | * installation of the JPEG library is set up. jconfig.h can be |
20 | * generated automatically for many systems. jmorecfg.h contains | 20 | * generated automatically for many systems. jmorecfg.h contains |
21 | * manual configuration options that most people need not worry about. | 21 | * manual configuration options that most people need not worry about. |
22 | */ | 22 | */ |
23 | 23 | ||
24 | #ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */ | 24 | #ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */ |
25 | #include "jconfig.h" /* widely used configuration options */ | 25 | #include "jconfig.h" /* widely used configuration options */ |
26 | #endif | 26 | #endif |
27 | #include "jmorecfg.h" /* seldom changed options */ | 27 | #include "jmorecfg.h" /* seldom changed options */ |
28 | 28 | ||
29 | 29 | ||
30 | #ifdef __cplusplus | 30 | #ifdef __cplusplus |
31 | #ifndef DONT_USE_EXTERN_C | 31 | #ifndef DONT_USE_EXTERN_C |
32 | extern "C" { | 32 | extern "C" { |
33 | #endif | 33 | #endif |
34 | #endif | 34 | #endif |
35 | 35 | ||
36 | /* Version IDs for the JPEG library. | 36 | /* Version IDs for the JPEG library. |
37 | * Might be useful for tests like "#if JPEG_LIB_VERSION >= 80". | 37 | * Might be useful for tests like "#if JPEG_LIB_VERSION >= 80". |
38 | */ | 38 | */ |
39 | 39 | ||
40 | #define JPEG_LIB_VERSION 80 /* Compatibility version 8.0 */ | 40 | #define JPEG_LIB_VERSION 80 /* Compatibility version 8.0 */ |
41 | #define JPEG_LIB_VERSION_MAJOR 8 | 41 | #define JPEG_LIB_VERSION_MAJOR 8 |
42 | #define JPEG_LIB_VERSION_MINOR 4 | 42 | #define JPEG_LIB_VERSION_MINOR 4 |
43 | 43 | ||
44 | 44 | ||
45 | /* Various constants determining the sizes of things. | 45 | /* Various constants determining the sizes of things. |
46 | * All of these are specified by the JPEG standard, so don't change them | 46 | * All of these are specified by the JPEG standard, so don't change them |
47 | * if you want to be compatible. | 47 | * if you want to be compatible. |
48 | */ | 48 | */ |
49 | 49 | ||
50 | #define DCTSIZE 8 /* The basic DCT block is 8x8 coefficients */ | 50 | #define DCTSIZE 8 /* The basic DCT block is 8x8 coefficients */ |
51 | #define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */ | 51 | #define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */ |
52 | #define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */ | 52 | #define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */ |
53 | #define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */ | 53 | #define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */ |
54 | #define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */ | 54 | #define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */ |
55 | #define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */ | 55 | #define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */ |
56 | #define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */ | 56 | #define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */ |
57 | /* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard; | 57 | /* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard; |
58 | * the PostScript DCT filter can emit files with many more than 10 blocks/MCU. | 58 | * the PostScript DCT filter can emit files with many more than 10 blocks/MCU. |
59 | * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU | 59 | * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU |
60 | * to handle it. We even let you do this from the jconfig.h file. However, | 60 | * to handle it. We even let you do this from the jconfig.h file. However, |
61 | * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe | 61 | * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe |
62 | * sometimes emits noncompliant files doesn't mean you should too. | 62 | * sometimes emits noncompliant files doesn't mean you should too. |
63 | */ | 63 | */ |
64 | #define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */ | 64 | #define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */ |
65 | #ifndef D_MAX_BLOCKS_IN_MCU | 65 | #ifndef D_MAX_BLOCKS_IN_MCU |
66 | #define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */ | 66 | #define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */ |
67 | #endif | 67 | #endif |
68 | 68 | ||
69 | 69 | ||
70 | /* Data structures for images (arrays of samples and of DCT coefficients). | 70 | /* Data structures for images (arrays of samples and of DCT coefficients). |
71 | * On 80x86 machines, the image arrays are too big for near pointers, | 71 | * On 80x86 machines, the image arrays are too big for near pointers, |
72 | * but the pointer arrays can fit in near memory. | 72 | * but the pointer arrays can fit in near memory. |
73 | */ | 73 | */ |
74 | 74 | ||
75 | typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */ | 75 | typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */ |
76 | typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */ | 76 | typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */ |
77 | typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */ | 77 | typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */ |
78 | 78 | ||
79 | typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */ | 79 | typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */ |
80 | typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */ | 80 | typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */ |
81 | typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */ | 81 | typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */ |
82 | typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */ | 82 | typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */ |
83 | 83 | ||
84 | typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */ | 84 | typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */ |
85 | 85 | ||
86 | 86 | ||
87 | /* Types for JPEG compression parameters and working tables. */ | 87 | /* Types for JPEG compression parameters and working tables. */ |
88 | 88 | ||
89 | 89 | ||
90 | /* DCT coefficient quantization tables. */ | 90 | /* DCT coefficient quantization tables. */ |
91 | 91 | ||
92 | typedef struct { | 92 | typedef struct { |
93 | /* This array gives the coefficient quantizers in natural array order | 93 | /* This array gives the coefficient quantizers in natural array order |
94 | * (not the zigzag order in which they are stored in a JPEG DQT marker). | 94 | * (not the zigzag order in which they are stored in a JPEG DQT marker). |
95 | * CAUTION: IJG versions prior to v6a kept this array in zigzag order. | 95 | * CAUTION: IJG versions prior to v6a kept this array in zigzag order. |
96 | */ | 96 | */ |
97 | UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */ | 97 | UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */ |
98 | /* This field is used only during compression. It's initialized FALSE when | 98 | /* This field is used only during compression. It's initialized FALSE when |
99 | * the table is created, and set TRUE when it's been output to the file. | 99 | * the table is created, and set TRUE when it's been output to the file. |
100 | * You could suppress output of a table by setting this to TRUE. | 100 | * You could suppress output of a table by setting this to TRUE. |
101 | * (See jpeg_suppress_tables for an example.) | 101 | * (See jpeg_suppress_tables for an example.) |
102 | */ | 102 | */ |
103 | boolean sent_table; /* TRUE when table has been output */ | 103 | boolean sent_table; /* TRUE when table has been output */ |
104 | } JQUANT_TBL; | 104 | } JQUANT_TBL; |
105 | 105 | ||
106 | 106 | ||
107 | /* Huffman coding tables. */ | 107 | /* Huffman coding tables. */ |
108 | 108 | ||
109 | typedef struct { | 109 | typedef struct { |
110 | /* These two fields directly represent the contents of a JPEG DHT marker */ | 110 | /* These two fields directly represent the contents of a JPEG DHT marker */ |
111 | UINT8 bits[17]; /* bits[k] = # of symbols with codes of */ | 111 | UINT8 bits[17]; /* bits[k] = # of symbols with codes of */ |
112 | /* length k bits; bits[0] is unused */ | 112 | /* length k bits; bits[0] is unused */ |
113 | UINT8 huffval[256]; /* The symbols, in order of incr code length */ | 113 | UINT8 huffval[256]; /* The symbols, in order of incr code length */ |
114 | /* This field is used only during compression. It's initialized FALSE when | 114 | /* This field is used only during compression. It's initialized FALSE when |
115 | * the table is created, and set TRUE when it's been output to the file. | 115 | * the table is created, and set TRUE when it's been output to the file. |
116 | * You could suppress output of a table by setting this to TRUE. | 116 | * You could suppress output of a table by setting this to TRUE. |
117 | * (See jpeg_suppress_tables for an example.) | 117 | * (See jpeg_suppress_tables for an example.) |
118 | */ | 118 | */ |
119 | boolean sent_table; /* TRUE when table has been output */ | 119 | boolean sent_table; /* TRUE when table has been output */ |
120 | } JHUFF_TBL; | 120 | } JHUFF_TBL; |
121 | 121 | ||
122 | 122 | ||
123 | /* Basic info about one component (color channel). */ | 123 | /* Basic info about one component (color channel). */ |
124 | 124 | ||
125 | typedef struct { | 125 | typedef struct { |
126 | /* These values are fixed over the whole image. */ | 126 | /* These values are fixed over the whole image. */ |
127 | /* For compression, they must be supplied by parameter setup; */ | 127 | /* For compression, they must be supplied by parameter setup; */ |
128 | /* for decompression, they are read from the SOF marker. */ | 128 | /* for decompression, they are read from the SOF marker. */ |
129 | int component_id; /* identifier for this component (0..255) */ | 129 | int component_id; /* identifier for this component (0..255) */ |
130 | int component_index; /* its index in SOF or cinfo->comp_info[] */ | 130 | int component_index; /* its index in SOF or cinfo->comp_info[] */ |
131 | int h_samp_factor; /* horizontal sampling factor (1..4) */ | 131 | int h_samp_factor; /* horizontal sampling factor (1..4) */ |
132 | int v_samp_factor; /* vertical sampling factor (1..4) */ | 132 | int v_samp_factor; /* vertical sampling factor (1..4) */ |
133 | int quant_tbl_no; /* quantization table selector (0..3) */ | 133 | int quant_tbl_no; /* quantization table selector (0..3) */ |
134 | /* These values may vary between scans. */ | 134 | /* These values may vary between scans. */ |
135 | /* For compression, they must be supplied by parameter setup; */ | 135 | /* For compression, they must be supplied by parameter setup; */ |
136 | /* for decompression, they are read from the SOS marker. */ | 136 | /* for decompression, they are read from the SOS marker. */ |
137 | /* The decompressor output side may not use these variables. */ | 137 | /* The decompressor output side may not use these variables. */ |
138 | int dc_tbl_no; /* DC entropy table selector (0..3) */ | 138 | int dc_tbl_no; /* DC entropy table selector (0..3) */ |
139 | int ac_tbl_no; /* AC entropy table selector (0..3) */ | 139 | int ac_tbl_no; /* AC entropy table selector (0..3) */ |
140 | 140 | ||
141 | /* Remaining fields should be treated as private by applications. */ | 141 | /* Remaining fields should be treated as private by applications. */ |
142 | 142 | ||
143 | /* These values are computed during compression or decompression startup: */ | 143 | /* These values are computed during compression or decompression startup: */ |
144 | /* Component's size in DCT blocks. | 144 | /* Component's size in DCT blocks. |
145 | * Any dummy blocks added to complete an MCU are not counted; therefore | 145 | * Any dummy blocks added to complete an MCU are not counted; therefore |
146 | * these values do not depend on whether a scan is interleaved or not. | 146 | * these values do not depend on whether a scan is interleaved or not. |
147 | */ | 147 | */ |
148 | JDIMENSION width_in_blocks; | 148 | JDIMENSION width_in_blocks; |
149 | JDIMENSION height_in_blocks; | 149 | JDIMENSION height_in_blocks; |
150 | /* Size of a DCT block in samples, | 150 | /* Size of a DCT block in samples, |
151 | * reflecting any scaling we choose to apply during the DCT step. | 151 | * reflecting any scaling we choose to apply during the DCT step. |
152 | * Values from 1 to 16 are supported. | 152 | * Values from 1 to 16 are supported. |
153 | * Note that different components may receive different DCT scalings. | 153 | * Note that different components may receive different DCT scalings. |
154 | */ | 154 | */ |
155 | int DCT_h_scaled_size; | 155 | int DCT_h_scaled_size; |
156 | int DCT_v_scaled_size; | 156 | int DCT_v_scaled_size; |
157 | /* The downsampled dimensions are the component's actual, unpadded number | 157 | /* The downsampled dimensions are the component's actual, unpadded number |
158 | * of samples at the main buffer (preprocessing/compression interface); | 158 | * of samples at the main buffer (preprocessing/compression interface); |
159 | * DCT scaling is included, so | 159 | * DCT scaling is included, so |
160 | * downsampled_width = ceil(image_width * Hi/Hmax * DCT_h_scaled_size/DCTSIZE) | 160 | * downsampled_width = ceil(image_width * Hi/Hmax * DCT_h_scaled_size/DCTSIZE) |
161 | * and similarly for height. | 161 | * and similarly for height. |
162 | */ | 162 | */ |
163 | JDIMENSION downsampled_width; /* actual width in samples */ | 163 | JDIMENSION downsampled_width; /* actual width in samples */ |
164 | JDIMENSION downsampled_height; /* actual height in samples */ | 164 | JDIMENSION downsampled_height; /* actual height in samples */ |
165 | /* This flag is used only for decompression. In cases where some of the | 165 | /* This flag is used only for decompression. In cases where some of the |
166 | * components will be ignored (eg grayscale output from YCbCr image), | 166 | * components will be ignored (eg grayscale output from YCbCr image), |
167 | * we can skip most computations for the unused components. | 167 | * we can skip most computations for the unused components. |
168 | */ | 168 | */ |
169 | boolean component_needed; /* do we need the value of this component? */ | 169 | boolean component_needed; /* do we need the value of this component? */ |
170 | 170 | ||
171 | /* These values are computed before starting a scan of the component. */ | 171 | /* These values are computed before starting a scan of the component. */ |
172 | /* The decompressor output side may not use these variables. */ | 172 | /* The decompressor output side may not use these variables. */ |
173 | int MCU_width; /* number of blocks per MCU, horizontally */ | 173 | int MCU_width; /* number of blocks per MCU, horizontally */ |
174 | int MCU_height; /* number of blocks per MCU, vertically */ | 174 | int MCU_height; /* number of blocks per MCU, vertically */ |
175 | int MCU_blocks; /* MCU_width * MCU_height */ | 175 | int MCU_blocks; /* MCU_width * MCU_height */ |
176 | int MCU_sample_width; /* MCU width in samples: MCU_width * DCT_h_scaled_size */ | 176 | int MCU_sample_width; /* MCU width in samples: MCU_width * DCT_h_scaled_size */ |
177 | int last_col_width; /* # of non-dummy blocks across in last MCU */ | 177 | int last_col_width; /* # of non-dummy blocks across in last MCU */ |
178 | int last_row_height; /* # of non-dummy blocks down in last MCU */ | 178 | int last_row_height; /* # of non-dummy blocks down in last MCU */ |
179 | 179 | ||
180 | /* Saved quantization table for component; NULL if none yet saved. | 180 | /* Saved quantization table for component; NULL if none yet saved. |
181 | * See jdinput.c comments about the need for this information. | 181 | * See jdinput.c comments about the need for this information. |
182 | * This field is currently used only for decompression. | 182 | * This field is currently used only for decompression. |
183 | */ | 183 | */ |
184 | JQUANT_TBL * quant_table; | 184 | JQUANT_TBL * quant_table; |
185 | 185 | ||
186 | /* Private per-component storage for DCT or IDCT subsystem. */ | 186 | /* Private per-component storage for DCT or IDCT subsystem. */ |
187 | void * dct_table; | 187 | void * dct_table; |
188 | } jpeg_component_info; | 188 | } jpeg_component_info; |
189 | 189 | ||
190 | 190 | ||
191 | /* The script for encoding a multiple-scan file is an array of these: */ | 191 | /* The script for encoding a multiple-scan file is an array of these: */ |
192 | 192 | ||
193 | typedef struct { | 193 | typedef struct { |
194 | int comps_in_scan; /* number of components encoded in this scan */ | 194 | int comps_in_scan; /* number of components encoded in this scan */ |
195 | int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */ | 195 | int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */ |
196 | int Ss, Se; /* progressive JPEG spectral selection parms */ | 196 | int Ss, Se; /* progressive JPEG spectral selection parms */ |
197 | int Ah, Al; /* progressive JPEG successive approx. parms */ | 197 | int Ah, Al; /* progressive JPEG successive approx. parms */ |
198 | } jpeg_scan_info; | 198 | } jpeg_scan_info; |
199 | 199 | ||
200 | /* The decompressor can save APPn and COM markers in a list of these: */ | 200 | /* The decompressor can save APPn and COM markers in a list of these: */ |
201 | 201 | ||
202 | typedef struct jpeg_marker_struct FAR * jpeg_saved_marker_ptr; | 202 | typedef struct jpeg_marker_struct FAR * jpeg_saved_marker_ptr; |
203 | 203 | ||
204 | struct jpeg_marker_struct { | 204 | struct jpeg_marker_struct { |
205 | jpeg_saved_marker_ptr next; /* next in list, or NULL */ | 205 | jpeg_saved_marker_ptr next; /* next in list, or NULL */ |
206 | UINT8 marker; /* marker code: JPEG_COM, or JPEG_APP0+n */ | 206 | UINT8 marker; /* marker code: JPEG_COM, or JPEG_APP0+n */ |
207 | unsigned int original_length; /* # bytes of data in the file */ | 207 | unsigned int original_length; /* # bytes of data in the file */ |
208 | unsigned int data_length; /* # bytes of data saved at data[] */ | 208 | unsigned int data_length; /* # bytes of data saved at data[] */ |
209 | JOCTET FAR * data; /* the data contained in the marker */ | 209 | JOCTET FAR * data; /* the data contained in the marker */ |
210 | /* the marker length word is not counted in data_length or original_length */ | 210 | /* the marker length word is not counted in data_length or original_length */ |
211 | }; | 211 | }; |
212 | 212 | ||
213 | /* Known color spaces. */ | 213 | /* Known color spaces. */ |
214 | 214 | ||
215 | typedef enum { | 215 | typedef enum { |
216 | JCS_UNKNOWN, /* error/unspecified */ | 216 | JCS_UNKNOWN, /* error/unspecified */ |
217 | JCS_GRAYSCALE, /* monochrome */ | 217 | JCS_GRAYSCALE, /* monochrome */ |
218 | JCS_RGB, /* red/green/blue */ | 218 | JCS_RGB, /* red/green/blue */ |
219 | JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ | 219 | JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ |
220 | JCS_CMYK, /* C/M/Y/K */ | 220 | JCS_CMYK, /* C/M/Y/K */ |
221 | JCS_YCCK /* Y/Cb/Cr/K */ | 221 | JCS_YCCK /* Y/Cb/Cr/K */ |
222 | } J_COLOR_SPACE; | 222 | } J_COLOR_SPACE; |
223 | 223 | ||
224 | /* DCT/IDCT algorithm options. */ | 224 | /* DCT/IDCT algorithm options. */ |
225 | 225 | ||
226 | typedef enum { | 226 | typedef enum { |
227 | JDCT_ISLOW, /* slow but accurate integer algorithm */ | 227 | JDCT_ISLOW, /* slow but accurate integer algorithm */ |
228 | JDCT_IFAST, /* faster, less accurate integer method */ | 228 | JDCT_IFAST, /* faster, less accurate integer method */ |
229 | JDCT_FLOAT /* floating-point: accurate, fast on fast HW */ | 229 | JDCT_FLOAT /* floating-point: accurate, fast on fast HW */ |
230 | } J_DCT_METHOD; | 230 | } J_DCT_METHOD; |
231 | 231 | ||
232 | #ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */ | 232 | #ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */ |
233 | #define JDCT_DEFAULT JDCT_ISLOW | 233 | #define JDCT_DEFAULT JDCT_ISLOW |
234 | #endif | 234 | #endif |
235 | #ifndef JDCT_FASTEST /* may be overridden in jconfig.h */ | 235 | #ifndef JDCT_FASTEST /* may be overridden in jconfig.h */ |
236 | #define JDCT_FASTEST JDCT_IFAST | 236 | #define JDCT_FASTEST JDCT_IFAST |
237 | #endif | 237 | #endif |
238 | 238 | ||
239 | /* Dithering options for decompression. */ | 239 | /* Dithering options for decompression. */ |
240 | 240 | ||
241 | typedef enum { | 241 | typedef enum { |
242 | JDITHER_NONE, /* no dithering */ | 242 | JDITHER_NONE, /* no dithering */ |
243 | JDITHER_ORDERED, /* simple ordered dither */ | 243 | JDITHER_ORDERED, /* simple ordered dither */ |
244 | JDITHER_FS /* Floyd-Steinberg error diffusion dither */ | 244 | JDITHER_FS /* Floyd-Steinberg error diffusion dither */ |
245 | } J_DITHER_MODE; | 245 | } J_DITHER_MODE; |
246 | 246 | ||
247 | 247 | ||
248 | /* Common fields between JPEG compression and decompression master structs. */ | 248 | /* Common fields between JPEG compression and decompression master structs. */ |
249 | 249 | ||
250 | #define jpeg_common_fields \ | 250 | #define jpeg_common_fields \ |
251 | struct jpeg_error_mgr * err; /* Error handler module */\ | 251 | struct jpeg_error_mgr * err; /* Error handler module */\ |
252 | struct jpeg_memory_mgr * mem; /* Memory manager module */\ | 252 | struct jpeg_memory_mgr * mem; /* Memory manager module */\ |
253 | struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\ | 253 | struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\ |
254 | void * client_data; /* Available for use by application */\ | 254 | void * client_data; /* Available for use by application */\ |
255 | boolean is_decompressor; /* So common code can tell which is which */\ | 255 | boolean is_decompressor; /* So common code can tell which is which */\ |
256 | int global_state /* For checking call sequence validity */ | 256 | int global_state /* For checking call sequence validity */ |
257 | 257 | ||
258 | /* Routines that are to be used by both halves of the library are declared | 258 | /* Routines that are to be used by both halves of the library are declared |
259 | * to receive a pointer to this structure. There are no actual instances of | 259 | * to receive a pointer to this structure. There are no actual instances of |
260 | * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct. | 260 | * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct. |
261 | */ | 261 | */ |
262 | struct jpeg_common_struct { | 262 | struct jpeg_common_struct { |
263 | jpeg_common_fields; /* Fields common to both master struct types */ | 263 | jpeg_common_fields; /* Fields common to both master struct types */ |
264 | /* Additional fields follow in an actual jpeg_compress_struct or | 264 | /* Additional fields follow in an actual jpeg_compress_struct or |
265 | * jpeg_decompress_struct. All three structs must agree on these | 265 | * jpeg_decompress_struct. All three structs must agree on these |
266 | * initial fields! (This would be a lot cleaner in C++.) | 266 | * initial fields! (This would be a lot cleaner in C++.) |
267 | */ | 267 | */ |
268 | }; | 268 | }; |
269 | 269 | ||
270 | typedef struct jpeg_common_struct * j_common_ptr; | 270 | typedef struct jpeg_common_struct * j_common_ptr; |
271 | typedef struct jpeg_compress_struct * j_compress_ptr; | 271 | typedef struct jpeg_compress_struct * j_compress_ptr; |
272 | typedef struct jpeg_decompress_struct * j_decompress_ptr; | 272 | typedef struct jpeg_decompress_struct * j_decompress_ptr; |
273 | 273 | ||
274 | 274 | ||
275 | /* Master record for a compression instance */ | 275 | /* Master record for a compression instance */ |
276 | 276 | ||
277 | struct jpeg_compress_struct { | 277 | struct jpeg_compress_struct { |
278 | jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */ | 278 | jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */ |
279 | 279 | ||
280 | /* Destination for compressed data */ | 280 | /* Destination for compressed data */ |
281 | struct jpeg_destination_mgr * dest; | 281 | struct jpeg_destination_mgr * dest; |
282 | 282 | ||
283 | /* Description of source image --- these fields must be filled in by | 283 | /* Description of source image --- these fields must be filled in by |
284 | * outer application before starting compression. in_color_space must | 284 | * outer application before starting compression. in_color_space must |
285 | * be correct before you can even call jpeg_set_defaults(). | 285 | * be correct before you can even call jpeg_set_defaults(). |
286 | */ | 286 | */ |
287 | 287 | ||
288 | JDIMENSION image_width; /* input image width */ | 288 | JDIMENSION image_width; /* input image width */ |
289 | JDIMENSION image_height; /* input image height */ | 289 | JDIMENSION image_height; /* input image height */ |
290 | int input_components; /* # of color components in input image */ | 290 | int input_components; /* # of color components in input image */ |
291 | J_COLOR_SPACE in_color_space; /* colorspace of input image */ | 291 | J_COLOR_SPACE in_color_space; /* colorspace of input image */ |
292 | 292 | ||
293 | double input_gamma; /* image gamma of input image */ | 293 | double input_gamma; /* image gamma of input image */ |
294 | 294 | ||
295 | /* Compression parameters --- these fields must be set before calling | 295 | /* Compression parameters --- these fields must be set before calling |
296 | * jpeg_start_compress(). We recommend calling jpeg_set_defaults() to | 296 | * jpeg_start_compress(). We recommend calling jpeg_set_defaults() to |
297 | * initialize everything to reasonable defaults, then changing anything | 297 | * initialize everything to reasonable defaults, then changing anything |
298 | * the application specifically wants to change. That way you won't get | 298 | * the application specifically wants to change. That way you won't get |
299 | * burnt when new parameters are added. Also note that there are several | 299 | * burnt when new parameters are added. Also note that there are several |
300 | * helper routines to simplify changing parameters. | 300 | * helper routines to simplify changing parameters. |
301 | */ | 301 | */ |
302 | 302 | ||
303 | unsigned int scale_num, scale_denom; /* fraction by which to scale image */ | 303 | unsigned int scale_num, scale_denom; /* fraction by which to scale image */ |
304 | 304 | ||
305 | JDIMENSION jpeg_width; /* scaled JPEG image width */ | 305 | JDIMENSION jpeg_width; /* scaled JPEG image width */ |
306 | JDIMENSION jpeg_height; /* scaled JPEG image height */ | 306 | JDIMENSION jpeg_height; /* scaled JPEG image height */ |
307 | /* Dimensions of actual JPEG image that will be written to file, | 307 | /* Dimensions of actual JPEG image that will be written to file, |
308 | * derived from input dimensions by scaling factors above. | 308 | * derived from input dimensions by scaling factors above. |
309 | * These fields are computed by jpeg_start_compress(). | 309 | * These fields are computed by jpeg_start_compress(). |
310 | * You can also use jpeg_calc_jpeg_dimensions() to determine these values | 310 | * You can also use jpeg_calc_jpeg_dimensions() to determine these values |
311 | * in advance of calling jpeg_start_compress(). | 311 | * in advance of calling jpeg_start_compress(). |
312 | */ | 312 | */ |
313 | 313 | ||
314 | int data_precision; /* bits of precision in image data */ | 314 | int data_precision; /* bits of precision in image data */ |
315 | 315 | ||
316 | int num_components; /* # of color components in JPEG image */ | 316 | int num_components; /* # of color components in JPEG image */ |
317 | J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ | 317 | J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ |
318 | 318 | ||
319 | jpeg_component_info * comp_info; | 319 | jpeg_component_info * comp_info; |
320 | /* comp_info[i] describes component that appears i'th in SOF */ | 320 | /* comp_info[i] describes component that appears i'th in SOF */ |
321 | 321 | ||
322 | JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; | 322 | JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; |
323 | int q_scale_factor[NUM_QUANT_TBLS]; | 323 | int q_scale_factor[NUM_QUANT_TBLS]; |
324 | /* ptrs to coefficient quantization tables, or NULL if not defined, | 324 | /* ptrs to coefficient quantization tables, or NULL if not defined, |
325 | * and corresponding scale factors (percentage, initialized 100). | 325 | * and corresponding scale factors (percentage, initialized 100). |
326 | */ | 326 | */ |
327 | 327 | ||
328 | JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; | 328 | JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; |
329 | JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; | 329 | JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; |
330 | /* ptrs to Huffman coding tables, or NULL if not defined */ | 330 | /* ptrs to Huffman coding tables, or NULL if not defined */ |
331 | 331 | ||
332 | UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ | 332 | UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ |
333 | UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ | 333 | UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ |
334 | UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ | 334 | UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ |
335 | 335 | ||
336 | int num_scans; /* # of entries in scan_info array */ | 336 | int num_scans; /* # of entries in scan_info array */ |
337 | const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */ | 337 | const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */ |
338 | /* The default value of scan_info is NULL, which causes a single-scan | 338 | /* The default value of scan_info is NULL, which causes a single-scan |
339 | * sequential JPEG file to be emitted. To create a multi-scan file, | 339 | * sequential JPEG file to be emitted. To create a multi-scan file, |
340 | * set num_scans and scan_info to point to an array of scan definitions. | 340 | * set num_scans and scan_info to point to an array of scan definitions. |
341 | */ | 341 | */ |
342 | 342 | ||
343 | boolean raw_data_in; /* TRUE=caller supplies downsampled data */ | 343 | boolean raw_data_in; /* TRUE=caller supplies downsampled data */ |
344 | boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ | 344 | boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ |
345 | boolean optimize_coding; /* TRUE=optimize entropy encoding parms */ | 345 | boolean optimize_coding; /* TRUE=optimize entropy encoding parms */ |
346 | boolean CCIR601_sampling; /* TRUE=first samples are cosited */ | 346 | boolean CCIR601_sampling; /* TRUE=first samples are cosited */ |
347 | boolean do_fancy_downsampling; /* TRUE=apply fancy downsampling */ | 347 | boolean do_fancy_downsampling; /* TRUE=apply fancy downsampling */ |
348 | int smoothing_factor; /* 1..100, or 0 for no input smoothing */ | 348 | int smoothing_factor; /* 1..100, or 0 for no input smoothing */ |
349 | J_DCT_METHOD dct_method; /* DCT algorithm selector */ | 349 | J_DCT_METHOD dct_method; /* DCT algorithm selector */ |
350 | 350 | ||
351 | /* The restart interval can be specified in absolute MCUs by setting | 351 | /* The restart interval can be specified in absolute MCUs by setting |
352 | * restart_interval, or in MCU rows by setting restart_in_rows | 352 | * restart_interval, or in MCU rows by setting restart_in_rows |
353 | * (in which case the correct restart_interval will be figured | 353 | * (in which case the correct restart_interval will be figured |
354 | * for each scan). | 354 | * for each scan). |
355 | */ | 355 | */ |
356 | unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */ | 356 | unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */ |
357 | int restart_in_rows; /* if > 0, MCU rows per restart interval */ | 357 | int restart_in_rows; /* if > 0, MCU rows per restart interval */ |
358 | 358 | ||
359 | /* Parameters controlling emission of special markers. */ | 359 | /* Parameters controlling emission of special markers. */ |
360 | 360 | ||
361 | boolean write_JFIF_header; /* should a JFIF marker be written? */ | 361 | boolean write_JFIF_header; /* should a JFIF marker be written? */ |
362 | UINT8 JFIF_major_version; /* What to write for the JFIF version number */ | 362 | UINT8 JFIF_major_version; /* What to write for the JFIF version number */ |
363 | UINT8 JFIF_minor_version; | 363 | UINT8 JFIF_minor_version; |
364 | /* These three values are not used by the JPEG code, merely copied */ | 364 | /* These three values are not used by the JPEG code, merely copied */ |
365 | /* into the JFIF APP0 marker. density_unit can be 0 for unknown, */ | 365 | /* into the JFIF APP0 marker. density_unit can be 0 for unknown, */ |
366 | /* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */ | 366 | /* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */ |
367 | /* ratio is defined by X_density/Y_density even when density_unit=0. */ | 367 | /* ratio is defined by X_density/Y_density even when density_unit=0. */ |
368 | UINT8 density_unit; /* JFIF code for pixel size units */ | 368 | UINT8 density_unit; /* JFIF code for pixel size units */ |
369 | UINT16 X_density; /* Horizontal pixel density */ | 369 | UINT16 X_density; /* Horizontal pixel density */ |
370 | UINT16 Y_density; /* Vertical pixel density */ | 370 | UINT16 Y_density; /* Vertical pixel density */ |
371 | boolean write_Adobe_marker; /* should an Adobe marker be written? */ | 371 | boolean write_Adobe_marker; /* should an Adobe marker be written? */ |
372 | 372 | ||
373 | /* State variable: index of next scanline to be written to | 373 | /* State variable: index of next scanline to be written to |
374 | * jpeg_write_scanlines(). Application may use this to control its | 374 | * jpeg_write_scanlines(). Application may use this to control its |
375 | * processing loop, e.g., "while (next_scanline < image_height)". | 375 | * processing loop, e.g., "while (next_scanline < image_height)". |
376 | */ | 376 | */ |
377 | 377 | ||
378 | JDIMENSION next_scanline; /* 0 .. image_height-1 */ | 378 | JDIMENSION next_scanline; /* 0 .. image_height-1 */ |
379 | 379 | ||
380 | /* Remaining fields are known throughout compressor, but generally | 380 | /* Remaining fields are known throughout compressor, but generally |
381 | * should not be touched by a surrounding application. | 381 | * should not be touched by a surrounding application. |
382 | */ | 382 | */ |
383 | 383 | ||
384 | /* | 384 | /* |
385 | * These fields are computed during compression startup | 385 | * These fields are computed during compression startup |
386 | */ | 386 | */ |
387 | boolean progressive_mode; /* TRUE if scan script uses progressive mode */ | 387 | boolean progressive_mode; /* TRUE if scan script uses progressive mode */ |
388 | int max_h_samp_factor; /* largest h_samp_factor */ | 388 | int max_h_samp_factor; /* largest h_samp_factor */ |
389 | int max_v_samp_factor; /* largest v_samp_factor */ | 389 | int max_v_samp_factor; /* largest v_samp_factor */ |
390 | 390 | ||
391 | int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */ | 391 | int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */ |
392 | int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */ | 392 | int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */ |
393 | 393 | ||
394 | JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */ | 394 | JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */ |
395 | /* The coefficient controller receives data in units of MCU rows as defined | 395 | /* The coefficient controller receives data in units of MCU rows as defined |
396 | * for fully interleaved scans (whether the JPEG file is interleaved or not). | 396 | * for fully interleaved scans (whether the JPEG file is interleaved or not). |
397 | * There are v_samp_factor * DCTSIZE sample rows of each component in an | 397 | * There are v_samp_factor * DCTSIZE sample rows of each component in an |
398 | * "iMCU" (interleaved MCU) row. | 398 | * "iMCU" (interleaved MCU) row. |
399 | */ | 399 | */ |
400 | 400 | ||
401 | /* | 401 | /* |
402 | * These fields are valid during any one scan. | 402 | * These fields are valid during any one scan. |
403 | * They describe the components and MCUs actually appearing in the scan. | 403 | * They describe the components and MCUs actually appearing in the scan. |
404 | */ | 404 | */ |
405 | int comps_in_scan; /* # of JPEG components in this scan */ | 405 | int comps_in_scan; /* # of JPEG components in this scan */ |
406 | jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; | 406 | jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; |
407 | /* *cur_comp_info[i] describes component that appears i'th in SOS */ | 407 | /* *cur_comp_info[i] describes component that appears i'th in SOS */ |
408 | 408 | ||
409 | JDIMENSION MCUs_per_row; /* # of MCUs across the image */ | 409 | JDIMENSION MCUs_per_row; /* # of MCUs across the image */ |
410 | JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ | 410 | JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ |
411 | 411 | ||
412 | int blocks_in_MCU; /* # of DCT blocks per MCU */ | 412 | int blocks_in_MCU; /* # of DCT blocks per MCU */ |
413 | int MCU_membership[C_MAX_BLOCKS_IN_MCU]; | 413 | int MCU_membership[C_MAX_BLOCKS_IN_MCU]; |
414 | /* MCU_membership[i] is index in cur_comp_info of component owning */ | 414 | /* MCU_membership[i] is index in cur_comp_info of component owning */ |
415 | /* i'th block in an MCU */ | 415 | /* i'th block in an MCU */ |
416 | 416 | ||
417 | int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ | 417 | int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ |
418 | 418 | ||
419 | int block_size; /* the basic DCT block size: 1..16 */ | 419 | int block_size; /* the basic DCT block size: 1..16 */ |
420 | const int * natural_order; /* natural-order position array */ | 420 | const int * natural_order; /* natural-order position array */ |
421 | int lim_Se; /* min( Se, DCTSIZE2-1 ) */ | 421 | int lim_Se; /* min( Se, DCTSIZE2-1 ) */ |
422 | 422 | ||
423 | /* | 423 | /* |
424 | * Links to compression subobjects (methods and private variables of modules) | 424 | * Links to compression subobjects (methods and private variables of modules) |
425 | */ | 425 | */ |
426 | struct jpeg_comp_master * master; | 426 | struct jpeg_comp_master * master; |
427 | struct jpeg_c_main_controller * main; | 427 | struct jpeg_c_main_controller * main; |
428 | struct jpeg_c_prep_controller * prep; | 428 | struct jpeg_c_prep_controller * prep; |
429 | struct jpeg_c_coef_controller * coef; | 429 | struct jpeg_c_coef_controller * coef; |
430 | struct jpeg_marker_writer * marker; | 430 | struct jpeg_marker_writer * marker; |
431 | struct jpeg_color_converter * cconvert; | 431 | struct jpeg_color_converter * cconvert; |
432 | struct jpeg_downsampler * downsample; | 432 | struct jpeg_downsampler * downsample; |
433 | struct jpeg_forward_dct * fdct; | 433 | struct jpeg_forward_dct * fdct; |
434 | struct jpeg_entropy_encoder * entropy; | 434 | struct jpeg_entropy_encoder * entropy; |
435 | jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */ | 435 | jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */ |
436 | int script_space_size; | 436 | int script_space_size; |
437 | }; | 437 | }; |
438 | 438 | ||
439 | 439 | ||
440 | /* Master record for a decompression instance */ | 440 | /* Master record for a decompression instance */ |
441 | 441 | ||
442 | struct jpeg_decompress_struct { | 442 | struct jpeg_decompress_struct { |
443 | jpeg_common_fields; /* Fields shared with jpeg_compress_struct */ | 443 | jpeg_common_fields; /* Fields shared with jpeg_compress_struct */ |
444 | 444 | ||
445 | /* Source of compressed data */ | 445 | /* Source of compressed data */ |
446 | struct jpeg_source_mgr * src; | 446 | struct jpeg_source_mgr * src; |
447 | 447 | ||
448 | /* Basic description of image --- filled in by jpeg_read_header(). */ | 448 | /* Basic description of image --- filled in by jpeg_read_header(). */ |
449 | /* Application may inspect these values to decide how to process image. */ | 449 | /* Application may inspect these values to decide how to process image. */ |
450 | 450 | ||
451 | JDIMENSION image_width; /* nominal image width (from SOF marker) */ | 451 | JDIMENSION image_width; /* nominal image width (from SOF marker) */ |
452 | JDIMENSION image_height; /* nominal image height */ | 452 | JDIMENSION image_height; /* nominal image height */ |
453 | int num_components; /* # of color components in JPEG image */ | 453 | int num_components; /* # of color components in JPEG image */ |
454 | J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ | 454 | J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ |
455 | 455 | ||
456 | /* Decompression processing parameters --- these fields must be set before | 456 | /* Decompression processing parameters --- these fields must be set before |
457 | * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes | 457 | * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes |
458 | * them to default values. | 458 | * them to default values. |
459 | */ | 459 | */ |
460 | 460 | ||
461 | J_COLOR_SPACE out_color_space; /* colorspace for output */ | 461 | J_COLOR_SPACE out_color_space; /* colorspace for output */ |
462 | 462 | ||
463 | unsigned int scale_num, scale_denom; /* fraction by which to scale image */ | 463 | unsigned int scale_num, scale_denom; /* fraction by which to scale image */ |
464 | 464 | ||
465 | double output_gamma; /* image gamma wanted in output */ | 465 | double output_gamma; /* image gamma wanted in output */ |
466 | 466 | ||
467 | boolean buffered_image; /* TRUE=multiple output passes */ | 467 | boolean buffered_image; /* TRUE=multiple output passes */ |
468 | boolean raw_data_out; /* TRUE=downsampled data wanted */ | 468 | boolean raw_data_out; /* TRUE=downsampled data wanted */ |
469 | 469 | ||
470 | J_DCT_METHOD dct_method; /* IDCT algorithm selector */ | 470 | J_DCT_METHOD dct_method; /* IDCT algorithm selector */ |
471 | boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */ | 471 | boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */ |
472 | boolean do_block_smoothing; /* TRUE=apply interblock smoothing */ | 472 | boolean do_block_smoothing; /* TRUE=apply interblock smoothing */ |
473 | 473 | ||
474 | boolean quantize_colors; /* TRUE=colormapped output wanted */ | 474 | boolean quantize_colors; /* TRUE=colormapped output wanted */ |
475 | /* the following are ignored if not quantize_colors: */ | 475 | /* the following are ignored if not quantize_colors: */ |
476 | J_DITHER_MODE dither_mode; /* type of color dithering to use */ | 476 | J_DITHER_MODE dither_mode; /* type of color dithering to use */ |
477 | boolean two_pass_quantize; /* TRUE=use two-pass color quantization */ | 477 | boolean two_pass_quantize; /* TRUE=use two-pass color quantization */ |
478 | int desired_number_of_colors; /* max # colors to use in created colormap */ | 478 | int desired_number_of_colors; /* max # colors to use in created colormap */ |
479 | /* these are significant only in buffered-image mode: */ | 479 | /* these are significant only in buffered-image mode: */ |
480 | boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */ | 480 | boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */ |
481 | boolean enable_external_quant;/* enable future use of external colormap */ | 481 | boolean enable_external_quant;/* enable future use of external colormap */ |
482 | boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */ | 482 | boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */ |
483 | 483 | ||
484 | /* Description of actual output image that will be returned to application. | 484 | /* Description of actual output image that will be returned to application. |
485 | * These fields are computed by jpeg_start_decompress(). | 485 | * These fields are computed by jpeg_start_decompress(). |
486 | * You can also use jpeg_calc_output_dimensions() to determine these values | 486 | * You can also use jpeg_calc_output_dimensions() to determine these values |
487 | * in advance of calling jpeg_start_decompress(). | 487 | * in advance of calling jpeg_start_decompress(). |
488 | */ | 488 | */ |
489 | 489 | ||
490 | JDIMENSION output_width; /* scaled image width */ | 490 | JDIMENSION output_width; /* scaled image width */ |
491 | JDIMENSION output_height; /* scaled image height */ | 491 | JDIMENSION output_height; /* scaled image height */ |
492 | int out_color_components; /* # of color components in out_color_space */ | 492 | int out_color_components; /* # of color components in out_color_space */ |
493 | int output_components; /* # of color components returned */ | 493 | int output_components; /* # of color components returned */ |
494 | /* output_components is 1 (a colormap index) when quantizing colors; | 494 | /* output_components is 1 (a colormap index) when quantizing colors; |
495 | * otherwise it equals out_color_components. | 495 | * otherwise it equals out_color_components. |
496 | */ | 496 | */ |
497 | int rec_outbuf_height; /* min recommended height of scanline buffer */ | 497 | int rec_outbuf_height; /* min recommended height of scanline buffer */ |
498 | /* If the buffer passed to jpeg_read_scanlines() is less than this many rows | 498 | /* If the buffer passed to jpeg_read_scanlines() is less than this many rows |
499 | * high, space and time will be wasted due to unnecessary data copying. | 499 | * high, space and time will be wasted due to unnecessary data copying. |
500 | * Usually rec_outbuf_height will be 1 or 2, at most 4. | 500 | * Usually rec_outbuf_height will be 1 or 2, at most 4. |
501 | */ | 501 | */ |
502 | 502 | ||
503 | /* When quantizing colors, the output colormap is described by these fields. | 503 | /* When quantizing colors, the output colormap is described by these fields. |
504 | * The application can supply a colormap by setting colormap non-NULL before | 504 | * The application can supply a colormap by setting colormap non-NULL before |
505 | * calling jpeg_start_decompress; otherwise a colormap is created during | 505 | * calling jpeg_start_decompress; otherwise a colormap is created during |
506 | * jpeg_start_decompress or jpeg_start_output. | 506 | * jpeg_start_decompress or jpeg_start_output. |
507 | * The map has out_color_components rows and actual_number_of_colors columns. | 507 | * The map has out_color_components rows and actual_number_of_colors columns. |
508 | */ | 508 | */ |
509 | int actual_number_of_colors; /* number of entries in use */ | 509 | int actual_number_of_colors; /* number of entries in use */ |
510 | JSAMPARRAY colormap; /* The color map as a 2-D pixel array */ | 510 | JSAMPARRAY colormap; /* The color map as a 2-D pixel array */ |
511 | 511 | ||
512 | /* State variables: these variables indicate the progress of decompression. | 512 | /* State variables: these variables indicate the progress of decompression. |
513 | * The application may examine these but must not modify them. | 513 | * The application may examine these but must not modify them. |
514 | */ | 514 | */ |
515 | 515 | ||
516 | /* Row index of next scanline to be read from jpeg_read_scanlines(). | 516 | /* Row index of next scanline to be read from jpeg_read_scanlines(). |
517 | * Application may use this to control its processing loop, e.g., | 517 | * Application may use this to control its processing loop, e.g., |
518 | * "while (output_scanline < output_height)". | 518 | * "while (output_scanline < output_height)". |
519 | */ | 519 | */ |
520 | JDIMENSION output_scanline; /* 0 .. output_height-1 */ | 520 | JDIMENSION output_scanline; /* 0 .. output_height-1 */ |
521 | 521 | ||
522 | /* Current input scan number and number of iMCU rows completed in scan. | 522 | /* Current input scan number and number of iMCU rows completed in scan. |
523 | * These indicate the progress of the decompressor input side. | 523 | * These indicate the progress of the decompressor input side. |
524 | */ | 524 | */ |
525 | int input_scan_number; /* Number of SOS markers seen so far */ | 525 | int input_scan_number; /* Number of SOS markers seen so far */ |
526 | JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */ | 526 | JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */ |
527 | 527 | ||
528 | /* The "output scan number" is the notional scan being displayed by the | 528 | /* The "output scan number" is the notional scan being displayed by the |
529 | * output side. The decompressor will not allow output scan/row number | 529 | * output side. The decompressor will not allow output scan/row number |
530 | * to get ahead of input scan/row, but it can fall arbitrarily far behind. | 530 | * to get ahead of input scan/row, but it can fall arbitrarily far behind. |
531 | */ | 531 | */ |
532 | int output_scan_number; /* Nominal scan number being displayed */ | 532 | int output_scan_number; /* Nominal scan number being displayed */ |
533 | JDIMENSION output_iMCU_row; /* Number of iMCU rows read */ | 533 | JDIMENSION output_iMCU_row; /* Number of iMCU rows read */ |
534 | 534 | ||
535 | /* Current progression status. coef_bits[c][i] indicates the precision | 535 | /* Current progression status. coef_bits[c][i] indicates the precision |
536 | * with which component c's DCT coefficient i (in zigzag order) is known. | 536 | * with which component c's DCT coefficient i (in zigzag order) is known. |
537 | * It is -1 when no data has yet been received, otherwise it is the point | 537 | * It is -1 when no data has yet been received, otherwise it is the point |
538 | * transform (shift) value for the most recent scan of the coefficient | 538 | * transform (shift) value for the most recent scan of the coefficient |
539 | * (thus, 0 at completion of the progression). | 539 | * (thus, 0 at completion of the progression). |
540 | * This pointer is NULL when reading a non-progressive file. | 540 | * This pointer is NULL when reading a non-progressive file. |
541 | */ | 541 | */ |
542 | int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */ | 542 | int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */ |
543 | 543 | ||
544 | /* Internal JPEG parameters --- the application usually need not look at | 544 | /* Internal JPEG parameters --- the application usually need not look at |
545 | * these fields. Note that the decompressor output side may not use | 545 | * these fields. Note that the decompressor output side may not use |
546 | * any parameters that can change between scans. | 546 | * any parameters that can change between scans. |
547 | */ | 547 | */ |
548 | 548 | ||
549 | /* Quantization and Huffman tables are carried forward across input | 549 | /* Quantization and Huffman tables are carried forward across input |
550 | * datastreams when processing abbreviated JPEG datastreams. | 550 | * datastreams when processing abbreviated JPEG datastreams. |
551 | */ | 551 | */ |
552 | 552 | ||
553 | JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; | 553 | JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; |
554 | /* ptrs to coefficient quantization tables, or NULL if not defined */ | 554 | /* ptrs to coefficient quantization tables, or NULL if not defined */ |
555 | 555 | ||
556 | JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; | 556 | JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; |
557 | JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; | 557 | JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; |
558 | /* ptrs to Huffman coding tables, or NULL if not defined */ | 558 | /* ptrs to Huffman coding tables, or NULL if not defined */ |
559 | 559 | ||
560 | /* These parameters are never carried across datastreams, since they | 560 | /* These parameters are never carried across datastreams, since they |
561 | * are given in SOF/SOS markers or defined to be reset by SOI. | 561 | * are given in SOF/SOS markers or defined to be reset by SOI. |
562 | */ | 562 | */ |
563 | 563 | ||
564 | int data_precision; /* bits of precision in image data */ | 564 | int data_precision; /* bits of precision in image data */ |
565 | 565 | ||
566 | jpeg_component_info * comp_info; | 566 | jpeg_component_info * comp_info; |
567 | /* comp_info[i] describes component that appears i'th in SOF */ | 567 | /* comp_info[i] describes component that appears i'th in SOF */ |
568 | 568 | ||
569 | boolean is_baseline; /* TRUE if Baseline SOF0 encountered */ | 569 | boolean is_baseline; /* TRUE if Baseline SOF0 encountered */ |
570 | boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */ | 570 | boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */ |
571 | boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ | 571 | boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ |
572 | 572 | ||
573 | UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ | 573 | UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ |
574 | UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ | 574 | UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ |
575 | UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ | 575 | UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ |
576 | 576 | ||
577 | unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */ | 577 | unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */ |
578 | 578 | ||
579 | /* These fields record data obtained from optional markers recognized by | 579 | /* These fields record data obtained from optional markers recognized by |
580 | * the JPEG library. | 580 | * the JPEG library. |
581 | */ | 581 | */ |
582 | boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */ | 582 | boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */ |
583 | /* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */ | 583 | /* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */ |
584 | UINT8 JFIF_major_version; /* JFIF version number */ | 584 | UINT8 JFIF_major_version; /* JFIF version number */ |
585 | UINT8 JFIF_minor_version; | 585 | UINT8 JFIF_minor_version; |
586 | UINT8 density_unit; /* JFIF code for pixel size units */ | 586 | UINT8 density_unit; /* JFIF code for pixel size units */ |
587 | UINT16 X_density; /* Horizontal pixel density */ | 587 | UINT16 X_density; /* Horizontal pixel density */ |
588 | UINT16 Y_density; /* Vertical pixel density */ | 588 | UINT16 Y_density; /* Vertical pixel density */ |
589 | boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */ | 589 | boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */ |
590 | UINT8 Adobe_transform; /* Color transform code from Adobe marker */ | 590 | UINT8 Adobe_transform; /* Color transform code from Adobe marker */ |
591 | 591 | ||
592 | boolean CCIR601_sampling; /* TRUE=first samples are cosited */ | 592 | boolean CCIR601_sampling; /* TRUE=first samples are cosited */ |
593 | 593 | ||
594 | /* Aside from the specific data retained from APPn markers known to the | 594 | /* Aside from the specific data retained from APPn markers known to the |
595 | * library, the uninterpreted contents of any or all APPn and COM markers | 595 | * library, the uninterpreted contents of any or all APPn and COM markers |
596 | * can be saved in a list for examination by the application. | 596 | * can be saved in a list for examination by the application. |
597 | */ | 597 | */ |
598 | jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */ | 598 | jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */ |
599 | 599 | ||
600 | /* Remaining fields are known throughout decompressor, but generally | 600 | /* Remaining fields are known throughout decompressor, but generally |
601 | * should not be touched by a surrounding application. | 601 | * should not be touched by a surrounding application. |
602 | */ | 602 | */ |
603 | 603 | ||
604 | /* | 604 | /* |
605 | * These fields are computed during decompression startup | 605 | * These fields are computed during decompression startup |
606 | */ | 606 | */ |
607 | int max_h_samp_factor; /* largest h_samp_factor */ | 607 | int max_h_samp_factor; /* largest h_samp_factor */ |
608 | int max_v_samp_factor; /* largest v_samp_factor */ | 608 | int max_v_samp_factor; /* largest v_samp_factor */ |
609 | 609 | ||
610 | int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */ | 610 | int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */ |
611 | int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */ | 611 | int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */ |
612 | 612 | ||
613 | JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */ | 613 | JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */ |
614 | /* The coefficient controller's input and output progress is measured in | 614 | /* The coefficient controller's input and output progress is measured in |
615 | * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows | 615 | * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows |
616 | * in fully interleaved JPEG scans, but are used whether the scan is | 616 | * in fully interleaved JPEG scans, but are used whether the scan is |
617 | * interleaved or not. We define an iMCU row as v_samp_factor DCT block | 617 | * interleaved or not. We define an iMCU row as v_samp_factor DCT block |
618 | * rows of each component. Therefore, the IDCT output contains | 618 | * rows of each component. Therefore, the IDCT output contains |
619 | * v_samp_factor*DCT_v_scaled_size sample rows of a component per iMCU row. | 619 | * v_samp_factor*DCT_v_scaled_size sample rows of a component per iMCU row. |
620 | */ | 620 | */ |
621 | 621 | ||
622 | JSAMPLE * sample_range_limit; /* table for fast range-limiting */ | 622 | JSAMPLE * sample_range_limit; /* table for fast range-limiting */ |
623 | 623 | ||
624 | /* | 624 | /* |
625 | * These fields are valid during any one scan. | 625 | * These fields are valid during any one scan. |
626 | * They describe the components and MCUs actually appearing in the scan. | 626 | * They describe the components and MCUs actually appearing in the scan. |
627 | * Note that the decompressor output side must not use these fields. | 627 | * Note that the decompressor output side must not use these fields. |
628 | */ | 628 | */ |
629 | int comps_in_scan; /* # of JPEG components in this scan */ | 629 | int comps_in_scan; /* # of JPEG components in this scan */ |
630 | jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; | 630 | jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; |
631 | /* *cur_comp_info[i] describes component that appears i'th in SOS */ | 631 | /* *cur_comp_info[i] describes component that appears i'th in SOS */ |
632 | 632 | ||
633 | JDIMENSION MCUs_per_row; /* # of MCUs across the image */ | 633 | JDIMENSION MCUs_per_row; /* # of MCUs across the image */ |
634 | JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ | 634 | JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ |
635 | 635 | ||
636 | int blocks_in_MCU; /* # of DCT blocks per MCU */ | 636 | int blocks_in_MCU; /* # of DCT blocks per MCU */ |
637 | int MCU_membership[D_MAX_BLOCKS_IN_MCU]; | 637 | int MCU_membership[D_MAX_BLOCKS_IN_MCU]; |
638 | /* MCU_membership[i] is index in cur_comp_info of component owning */ | 638 | /* MCU_membership[i] is index in cur_comp_info of component owning */ |
639 | /* i'th block in an MCU */ | 639 | /* i'th block in an MCU */ |
640 | 640 | ||
641 | int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ | 641 | int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ |
642 | 642 | ||
643 | /* These fields are derived from Se of first SOS marker. | 643 | /* These fields are derived from Se of first SOS marker. |
644 | */ | 644 | */ |
645 | int block_size; /* the basic DCT block size: 1..16 */ | 645 | int block_size; /* the basic DCT block size: 1..16 */ |
646 | const int * natural_order; /* natural-order position array for entropy decode */ | 646 | const int * natural_order; /* natural-order position array for entropy decode */ |
647 | int lim_Se; /* min( Se, DCTSIZE2-1 ) for entropy decode */ | 647 | int lim_Se; /* min( Se, DCTSIZE2-1 ) for entropy decode */ |
648 | 648 | ||
649 | /* This field is shared between entropy decoder and marker parser. | 649 | /* This field is shared between entropy decoder and marker parser. |
650 | * It is either zero or the code of a JPEG marker that has been | 650 | * It is either zero or the code of a JPEG marker that has been |
651 | * read from the data source, but has not yet been processed. | 651 | * read from the data source, but has not yet been processed. |
652 | */ | 652 | */ |
653 | int unread_marker; | 653 | int unread_marker; |
654 | 654 | ||
655 | /* | 655 | /* |
656 | * Links to decompression subobjects (methods, private variables of modules) | 656 | * Links to decompression subobjects (methods, private variables of modules) |
657 | */ | 657 | */ |
658 | struct jpeg_decomp_master * master; | 658 | struct jpeg_decomp_master * master; |
659 | struct jpeg_d_main_controller * main; | 659 | struct jpeg_d_main_controller * main; |
660 | struct jpeg_d_coef_controller * coef; | 660 | struct jpeg_d_coef_controller * coef; |
661 | struct jpeg_d_post_controller * post; | 661 | struct jpeg_d_post_controller * post; |
662 | struct jpeg_input_controller * inputctl; | 662 | struct jpeg_input_controller * inputctl; |
663 | struct jpeg_marker_reader * marker; | 663 | struct jpeg_marker_reader * marker; |
664 | struct jpeg_entropy_decoder * entropy; | 664 | struct jpeg_entropy_decoder * entropy; |
665 | struct jpeg_inverse_dct * idct; | 665 | struct jpeg_inverse_dct * idct; |
666 | struct jpeg_upsampler * upsample; | 666 | struct jpeg_upsampler * upsample; |
667 | struct jpeg_color_deconverter * cconvert; | 667 | struct jpeg_color_deconverter * cconvert; |
668 | struct jpeg_color_quantizer * cquantize; | 668 | struct jpeg_color_quantizer * cquantize; |
669 | }; | 669 | }; |
670 | 670 | ||
671 | 671 | ||
672 | /* "Object" declarations for JPEG modules that may be supplied or called | 672 | /* "Object" declarations for JPEG modules that may be supplied or called |
673 | * directly by the surrounding application. | 673 | * directly by the surrounding application. |
674 | * As with all objects in the JPEG library, these structs only define the | 674 | * As with all objects in the JPEG library, these structs only define the |
675 | * publicly visible methods and state variables of a module. Additional | 675 | * publicly visible methods and state variables of a module. Additional |
676 | * private fields may exist after the public ones. | 676 | * private fields may exist after the public ones. |
677 | */ | 677 | */ |
678 | 678 | ||
679 | 679 | ||
680 | /* Error handler object */ | 680 | /* Error handler object */ |
681 | 681 | ||
682 | struct jpeg_error_mgr { | 682 | struct jpeg_error_mgr { |
683 | /* Error exit handler: does not return to caller */ | 683 | /* Error exit handler: does not return to caller */ |
684 | JMETHOD(void, error_exit, (j_common_ptr cinfo)); | 684 | JMETHOD(void, error_exit, (j_common_ptr cinfo)); |
685 | /* Conditionally emit a trace or warning message */ | 685 | /* Conditionally emit a trace or warning message */ |
686 | JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level)); | 686 | JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level)); |
687 | /* Routine that actually outputs a trace or error message */ | 687 | /* Routine that actually outputs a trace or error message */ |
688 | JMETHOD(void, output_message, (j_common_ptr cinfo)); | 688 | JMETHOD(void, output_message, (j_common_ptr cinfo)); |
689 | /* Format a message string for the most recent JPEG error or message */ | 689 | /* Format a message string for the most recent JPEG error or message */ |
690 | JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer)); | 690 | JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer)); |
691 | #define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */ | 691 | #define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */ |
692 | /* Reset error state variables at start of a new image */ | 692 | /* Reset error state variables at start of a new image */ |
693 | JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo)); | 693 | JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo)); |
694 | 694 | ||
695 | /* The message ID code and any parameters are saved here. | 695 | /* The message ID code and any parameters are saved here. |
696 | * A message can have one string parameter or up to 8 int parameters. | 696 | * A message can have one string parameter or up to 8 int parameters. |
697 | */ | 697 | */ |
698 | int msg_code; | 698 | int msg_code; |
699 | #define JMSG_STR_PARM_MAX 80 | 699 | #define JMSG_STR_PARM_MAX 80 |
700 | union { | 700 | union { |
701 | int i[8]; | 701 | int i[8]; |
702 | char s[JMSG_STR_PARM_MAX]; | 702 | char s[JMSG_STR_PARM_MAX]; |
703 | } msg_parm; | 703 | } msg_parm; |
704 | 704 | ||
705 | /* Standard state variables for error facility */ | 705 | /* Standard state variables for error facility */ |
706 | 706 | ||
707 | int trace_level; /* max msg_level that will be displayed */ | 707 | int trace_level; /* max msg_level that will be displayed */ |
708 | 708 | ||
709 | /* For recoverable corrupt-data errors, we emit a warning message, | 709 | /* For recoverable corrupt-data errors, we emit a warning message, |
710 | * but keep going unless emit_message chooses to abort. emit_message | 710 | * but keep going unless emit_message chooses to abort. emit_message |
711 | * should count warnings in num_warnings. The surrounding application | 711 | * should count warnings in num_warnings. The surrounding application |
712 | * can check for bad data by seeing if num_warnings is nonzero at the | 712 | * can check for bad data by seeing if num_warnings is nonzero at the |
713 | * end of processing. | 713 | * end of processing. |
714 | */ | 714 | */ |
715 | long num_warnings; /* number of corrupt-data warnings */ | 715 | long num_warnings; /* number of corrupt-data warnings */ |
716 | 716 | ||
717 | /* These fields point to the table(s) of error message strings. | 717 | /* These fields point to the table(s) of error message strings. |
718 | * An application can change the table pointer to switch to a different | 718 | * An application can change the table pointer to switch to a different |
719 | * message list (typically, to change the language in which errors are | 719 | * message list (typically, to change the language in which errors are |
720 | * reported). Some applications may wish to add additional error codes | 720 | * reported). Some applications may wish to add additional error codes |
721 | * that will be handled by the JPEG library error mechanism; the second | 721 | * that will be handled by the JPEG library error mechanism; the second |
722 | * table pointer is used for this purpose. | 722 | * table pointer is used for this purpose. |
723 | * | 723 | * |
724 | * First table includes all errors generated by JPEG library itself. | 724 | * First table includes all errors generated by JPEG library itself. |
725 | * Error code 0 is reserved for a "no such error string" message. | 725 | * Error code 0 is reserved for a "no such error string" message. |
726 | */ | 726 | */ |
727 | const char * const * jpeg_message_table; /* Library errors */ | 727 | const char * const * jpeg_message_table; /* Library errors */ |
728 | int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */ | 728 | int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */ |
729 | /* Second table can be added by application (see cjpeg/djpeg for example). | 729 | /* Second table can be added by application (see cjpeg/djpeg for example). |
730 | * It contains strings numbered first_addon_message..last_addon_message. | 730 | * It contains strings numbered first_addon_message..last_addon_message. |
731 | */ | 731 | */ |
732 | const char * const * addon_message_table; /* Non-library errors */ | 732 | const char * const * addon_message_table; /* Non-library errors */ |
733 | int first_addon_message; /* code for first string in addon table */ | 733 | int first_addon_message; /* code for first string in addon table */ |
734 | int last_addon_message; /* code for last string in addon table */ | 734 | int last_addon_message; /* code for last string in addon table */ |
735 | }; | 735 | }; |
736 | 736 | ||
737 | 737 | ||
738 | /* Progress monitor object */ | 738 | /* Progress monitor object */ |
739 | 739 | ||
740 | struct jpeg_progress_mgr { | 740 | struct jpeg_progress_mgr { |
741 | JMETHOD(void, progress_monitor, (j_common_ptr cinfo)); | 741 | JMETHOD(void, progress_monitor, (j_common_ptr cinfo)); |
742 | 742 | ||
743 | long pass_counter; /* work units completed in this pass */ | 743 | long pass_counter; /* work units completed in this pass */ |
744 | long pass_limit; /* total number of work units in this pass */ | 744 | long pass_limit; /* total number of work units in this pass */ |
745 | int completed_passes; /* passes completed so far */ | 745 | int completed_passes; /* passes completed so far */ |
746 | int total_passes; /* total number of passes expected */ | 746 | int total_passes; /* total number of passes expected */ |
747 | }; | 747 | }; |
748 | 748 | ||
749 | 749 | ||
750 | /* Data destination object for compression */ | 750 | /* Data destination object for compression */ |
751 | 751 | ||
752 | struct jpeg_destination_mgr { | 752 | struct jpeg_destination_mgr { |
753 | JOCTET * next_output_byte; /* => next byte to write in buffer */ | 753 | JOCTET * next_output_byte; /* => next byte to write in buffer */ |
754 | size_t free_in_buffer; /* # of byte spaces remaining in buffer */ | 754 | size_t free_in_buffer; /* # of byte spaces remaining in buffer */ |
755 | 755 | ||
756 | JMETHOD(void, init_destination, (j_compress_ptr cinfo)); | 756 | JMETHOD(void, init_destination, (j_compress_ptr cinfo)); |
757 | JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo)); | 757 | JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo)); |
758 | JMETHOD(void, term_destination, (j_compress_ptr cinfo)); | 758 | JMETHOD(void, term_destination, (j_compress_ptr cinfo)); |
759 | }; | 759 | }; |
760 | 760 | ||
761 | 761 | ||
762 | /* Data source object for decompression */ | 762 | /* Data source object for decompression */ |
763 | 763 | ||
764 | struct jpeg_source_mgr { | 764 | struct jpeg_source_mgr { |
765 | const JOCTET * next_input_byte; /* => next byte to read from buffer */ | 765 | const JOCTET * next_input_byte; /* => next byte to read from buffer */ |
766 | size_t bytes_in_buffer; /* # of bytes remaining in buffer */ | 766 | size_t bytes_in_buffer; /* # of bytes remaining in buffer */ |
767 | 767 | ||
768 | JMETHOD(void, init_source, (j_decompress_ptr cinfo)); | 768 | JMETHOD(void, init_source, (j_decompress_ptr cinfo)); |
769 | JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo)); | 769 | JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo)); |
770 | JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes)); | 770 | JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes)); |
771 | JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired)); | 771 | JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired)); |
772 | JMETHOD(void, term_source, (j_decompress_ptr cinfo)); | 772 | JMETHOD(void, term_source, (j_decompress_ptr cinfo)); |
773 | }; | 773 | }; |
774 | 774 | ||
775 | 775 | ||
776 | /* Memory manager object. | 776 | /* Memory manager object. |
777 | * Allocates "small" objects (a few K total), "large" objects (tens of K), | 777 | * Allocates "small" objects (a few K total), "large" objects (tens of K), |
778 | * and "really big" objects (virtual arrays with backing store if needed). | 778 | * and "really big" objects (virtual arrays with backing store if needed). |
779 | * The memory manager does not allow individual objects to be freed; rather, | 779 | * The memory manager does not allow individual objects to be freed; rather, |
780 | * each created object is assigned to a pool, and whole pools can be freed | 780 | * each created object is assigned to a pool, and whole pools can be freed |
781 | * at once. This is faster and more convenient than remembering exactly what | 781 | * at once. This is faster and more convenient than remembering exactly what |
782 | * to free, especially where malloc()/free() are not too speedy. | 782 | * to free, especially where malloc()/free() are not too speedy. |
783 | * NB: alloc routines never return NULL. They exit to error_exit if not | 783 | * NB: alloc routines never return NULL. They exit to error_exit if not |
784 | * successful. | 784 | * successful. |
785 | */ | 785 | */ |
786 | 786 | ||
787 | #define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */ | 787 | #define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */ |
788 | #define JPOOL_IMAGE 1 /* lasts until done with image/datastream */ | 788 | #define JPOOL_IMAGE 1 /* lasts until done with image/datastream */ |
789 | #define JPOOL_NUMPOOLS 2 | 789 | #define JPOOL_NUMPOOLS 2 |
790 | 790 | ||
791 | typedef struct jvirt_sarray_control * jvirt_sarray_ptr; | 791 | typedef struct jvirt_sarray_control * jvirt_sarray_ptr; |
792 | typedef struct jvirt_barray_control * jvirt_barray_ptr; | 792 | typedef struct jvirt_barray_control * jvirt_barray_ptr; |
793 | 793 | ||
794 | 794 | ||
795 | struct jpeg_memory_mgr { | 795 | struct jpeg_memory_mgr { |
796 | /* Method pointers */ | 796 | /* Method pointers */ |
797 | JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id, | 797 | JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id, |
798 | size_t sizeofobject)); | 798 | size_t sizeofobject)); |
799 | JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id, | 799 | JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id, |
800 | size_t sizeofobject)); | 800 | size_t sizeofobject)); |
801 | JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id, | 801 | JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id, |
802 | JDIMENSION samplesperrow, | 802 | JDIMENSION samplesperrow, |
803 | JDIMENSION numrows)); | 803 | JDIMENSION numrows)); |
804 | JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id, | 804 | JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id, |
805 | JDIMENSION blocksperrow, | 805 | JDIMENSION blocksperrow, |
806 | JDIMENSION numrows)); | 806 | JDIMENSION numrows)); |
807 | JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo, | 807 | JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo, |
808 | int pool_id, | 808 | int pool_id, |
809 | boolean pre_zero, | 809 | boolean pre_zero, |
810 | JDIMENSION samplesperrow, | 810 | JDIMENSION samplesperrow, |
811 | JDIMENSION numrows, | 811 | JDIMENSION numrows, |
812 | JDIMENSION maxaccess)); | 812 | JDIMENSION maxaccess)); |
813 | JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo, | 813 | JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo, |
814 | int pool_id, | 814 | int pool_id, |
815 | boolean pre_zero, | 815 | boolean pre_zero, |
816 | JDIMENSION blocksperrow, | 816 | JDIMENSION blocksperrow, |
817 | JDIMENSION numrows, | 817 | JDIMENSION numrows, |
818 | JDIMENSION maxaccess)); | 818 | JDIMENSION maxaccess)); |
819 | JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo)); | 819 | JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo)); |
820 | JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo, | 820 | JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo, |
821 | jvirt_sarray_ptr ptr, | 821 | jvirt_sarray_ptr ptr, |
822 | JDIMENSION start_row, | 822 | JDIMENSION start_row, |
823 | JDIMENSION num_rows, | 823 | JDIMENSION num_rows, |
824 | boolean writable)); | 824 | boolean writable)); |
825 | JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo, | 825 | JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo, |
826 | jvirt_barray_ptr ptr, | 826 | jvirt_barray_ptr ptr, |
827 | JDIMENSION start_row, | 827 | JDIMENSION start_row, |
828 | JDIMENSION num_rows, | 828 | JDIMENSION num_rows, |
829 | boolean writable)); | 829 | boolean writable)); |
830 | JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id)); | 830 | JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id)); |
831 | JMETHOD(void, self_destruct, (j_common_ptr cinfo)); | 831 | JMETHOD(void, self_destruct, (j_common_ptr cinfo)); |
832 | 832 | ||
833 | /* Limit on memory allocation for this JPEG object. (Note that this is | 833 | /* Limit on memory allocation for this JPEG object. (Note that this is |
834 | * merely advisory, not a guaranteed maximum; it only affects the space | 834 | * merely advisory, not a guaranteed maximum; it only affects the space |
835 | * used for virtual-array buffers.) May be changed by outer application | 835 | * used for virtual-array buffers.) May be changed by outer application |
836 | * after creating the JPEG object. | 836 | * after creating the JPEG object. |
837 | */ | 837 | */ |
838 | long max_memory_to_use; | 838 | long max_memory_to_use; |
839 | 839 | ||
840 | /* Maximum allocation request accepted by alloc_large. */ | 840 | /* Maximum allocation request accepted by alloc_large. */ |
841 | long max_alloc_chunk; | 841 | long max_alloc_chunk; |
842 | }; | 842 | }; |
843 | 843 | ||
844 | 844 | ||
845 | /* Routine signature for application-supplied marker processing methods. | 845 | /* Routine signature for application-supplied marker processing methods. |
846 | * Need not pass marker code since it is stored in cinfo->unread_marker. | 846 | * Need not pass marker code since it is stored in cinfo->unread_marker. |
847 | */ | 847 | */ |
848 | typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo)); | 848 | typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo)); |
849 | 849 | ||
850 | 850 | ||
851 | /* Declarations for routines called by application. | 851 | /* Declarations for routines called by application. |
852 | * The JPP macro hides prototype parameters from compilers that can't cope. | 852 | * The JPP macro hides prototype parameters from compilers that can't cope. |
853 | * Note JPP requires double parentheses. | 853 | * Note JPP requires double parentheses. |
854 | */ | 854 | */ |
855 | 855 | ||
856 | #ifdef HAVE_PROTOTYPES | 856 | #ifdef HAVE_PROTOTYPES |
857 | #define JPP(arglist) arglist | 857 | #define JPP(arglist) arglist |
858 | #else | 858 | #else |
859 | #define JPP(arglist) () | 859 | #define JPP(arglist) () |
860 | #endif | 860 | #endif |
861 | 861 | ||
862 | 862 | ||
863 | /* Short forms of external names for systems with brain-damaged linkers. | 863 | /* Short forms of external names for systems with brain-damaged linkers. |
864 | * We shorten external names to be unique in the first six letters, which | 864 | * We shorten external names to be unique in the first six letters, which |
865 | * is good enough for all known systems. | 865 | * is good enough for all known systems. |
866 | * (If your compiler itself needs names to be unique in less than 15 | 866 | * (If your compiler itself needs names to be unique in less than 15 |
867 | * characters, you are out of luck. Get a better compiler.) | 867 | * characters, you are out of luck. Get a better compiler.) |
868 | */ | 868 | */ |
869 | 869 | ||
870 | #ifdef NEED_SHORT_EXTERNAL_NAMES | 870 | #ifdef NEED_SHORT_EXTERNAL_NAMES |
871 | #define jpeg_std_error jStdError | 871 | #define jpeg_std_error jStdError |
872 | #define jpeg_CreateCompress jCreaCompress | 872 | #define jpeg_CreateCompress jCreaCompress |
873 | #define jpeg_CreateDecompress jCreaDecompress | 873 | #define jpeg_CreateDecompress jCreaDecompress |
874 | #define jpeg_destroy_compress jDestCompress | 874 | #define jpeg_destroy_compress jDestCompress |
875 | #define jpeg_destroy_decompress jDestDecompress | 875 | #define jpeg_destroy_decompress jDestDecompress |
876 | #define jpeg_stdio_dest jStdDest | 876 | #define jpeg_stdio_dest jStdDest |
877 | #define jpeg_stdio_src jStdSrc | 877 | #define jpeg_stdio_src jStdSrc |
878 | #define jpeg_mem_dest jMemDest | 878 | #define jpeg_mem_dest jMemDest |
879 | #define jpeg_mem_src jMemSrc | 879 | #define jpeg_mem_src jMemSrc |
880 | #define jpeg_set_defaults jSetDefaults | 880 | #define jpeg_set_defaults jSetDefaults |
881 | #define jpeg_set_colorspace jSetColorspace | 881 | #define jpeg_set_colorspace jSetColorspace |
882 | #define jpeg_default_colorspace jDefColorspace | 882 | #define jpeg_default_colorspace jDefColorspace |
883 | #define jpeg_set_quality jSetQuality | 883 | #define jpeg_set_quality jSetQuality |
884 | #define jpeg_set_linear_quality jSetLQuality | 884 | #define jpeg_set_linear_quality jSetLQuality |
885 | #define jpeg_default_qtables jDefQTables | 885 | #define jpeg_default_qtables jDefQTables |
886 | #define jpeg_add_quant_table jAddQuantTable | 886 | #define jpeg_add_quant_table jAddQuantTable |
887 | #define jpeg_quality_scaling jQualityScaling | 887 | #define jpeg_quality_scaling jQualityScaling |
888 | #define jpeg_simple_progression jSimProgress | 888 | #define jpeg_simple_progression jSimProgress |
889 | #define jpeg_suppress_tables jSuppressTables | 889 | #define jpeg_suppress_tables jSuppressTables |
890 | #define jpeg_alloc_quant_table jAlcQTable | 890 | #define jpeg_alloc_quant_table jAlcQTable |
891 | #define jpeg_alloc_huff_table jAlcHTable | 891 | #define jpeg_alloc_huff_table jAlcHTable |
892 | #define jpeg_start_compress jStrtCompress | 892 | #define jpeg_start_compress jStrtCompress |
893 | #define jpeg_write_scanlines jWrtScanlines | 893 | #define jpeg_write_scanlines jWrtScanlines |
894 | #define jpeg_finish_compress jFinCompress | 894 | #define jpeg_finish_compress jFinCompress |
895 | #define jpeg_calc_jpeg_dimensions jCjpegDimensions | 895 | #define jpeg_calc_jpeg_dimensions jCjpegDimensions |
896 | #define jpeg_write_raw_data jWrtRawData | 896 | #define jpeg_write_raw_data jWrtRawData |
897 | #define jpeg_write_marker jWrtMarker | 897 | #define jpeg_write_marker jWrtMarker |
898 | #define jpeg_write_m_header jWrtMHeader | 898 | #define jpeg_write_m_header jWrtMHeader |
899 | #define jpeg_write_m_byte jWrtMByte | 899 | #define jpeg_write_m_byte jWrtMByte |
900 | #define jpeg_write_tables jWrtTables | 900 | #define jpeg_write_tables jWrtTables |
901 | #define jpeg_read_header jReadHeader | 901 | #define jpeg_read_header jReadHeader |
902 | #define jpeg_start_decompress jStrtDecompress | 902 | #define jpeg_start_decompress jStrtDecompress |
903 | #define jpeg_read_scanlines jReadScanlines | 903 | #define jpeg_read_scanlines jReadScanlines |
904 | #define jpeg_finish_decompress jFinDecompress | 904 | #define jpeg_finish_decompress jFinDecompress |
905 | #define jpeg_read_raw_data jReadRawData | 905 | #define jpeg_read_raw_data jReadRawData |
906 | #define jpeg_has_multiple_scans jHasMultScn | 906 | #define jpeg_has_multiple_scans jHasMultScn |
907 | #define jpeg_start_output jStrtOutput | 907 | #define jpeg_start_output jStrtOutput |
908 | #define jpeg_finish_output jFinOutput | 908 | #define jpeg_finish_output jFinOutput |
909 | #define jpeg_input_complete jInComplete | 909 | #define jpeg_input_complete jInComplete |
910 | #define jpeg_new_colormap jNewCMap | 910 | #define jpeg_new_colormap jNewCMap |
911 | #define jpeg_consume_input jConsumeInput | 911 | #define jpeg_consume_input jConsumeInput |
912 | #define jpeg_core_output_dimensions jCoreDimensions | 912 | #define jpeg_core_output_dimensions jCoreDimensions |
913 | #define jpeg_calc_output_dimensions jCalcDimensions | 913 | #define jpeg_calc_output_dimensions jCalcDimensions |
914 | #define jpeg_save_markers jSaveMarkers | 914 | #define jpeg_save_markers jSaveMarkers |
915 | #define jpeg_set_marker_processor jSetMarker | 915 | #define jpeg_set_marker_processor jSetMarker |
916 | #define jpeg_read_coefficients jReadCoefs | 916 | #define jpeg_read_coefficients jReadCoefs |
917 | #define jpeg_write_coefficients jWrtCoefs | 917 | #define jpeg_write_coefficients jWrtCoefs |
918 | #define jpeg_copy_critical_parameters jCopyCrit | 918 | #define jpeg_copy_critical_parameters jCopyCrit |
919 | #define jpeg_abort_compress jAbrtCompress | 919 | #define jpeg_abort_compress jAbrtCompress |
920 | #define jpeg_abort_decompress jAbrtDecompress | 920 | #define jpeg_abort_decompress jAbrtDecompress |
921 | #define jpeg_abort jAbort | 921 | #define jpeg_abort jAbort |
922 | #define jpeg_destroy jDestroy | 922 | #define jpeg_destroy jDestroy |
923 | #define jpeg_resync_to_restart jResyncRestart | 923 | #define jpeg_resync_to_restart jResyncRestart |
924 | #endif /* NEED_SHORT_EXTERNAL_NAMES */ | 924 | #endif /* NEED_SHORT_EXTERNAL_NAMES */ |
925 | 925 | ||
926 | 926 | ||
927 | /* Default error-management setup */ | 927 | /* Default error-management setup */ |
928 | EXTERN(struct jpeg_error_mgr *) jpeg_std_error | 928 | EXTERN(struct jpeg_error_mgr *) jpeg_std_error |
929 | JPP((struct jpeg_error_mgr * err)); | 929 | JPP((struct jpeg_error_mgr * err)); |
930 | 930 | ||
931 | /* Initialization of JPEG compression objects. | 931 | /* Initialization of JPEG compression objects. |
932 | * jpeg_create_compress() and jpeg_create_decompress() are the exported | 932 | * jpeg_create_compress() and jpeg_create_decompress() are the exported |
933 | * names that applications should call. These expand to calls on | 933 | * names that applications should call. These expand to calls on |
934 | * jpeg_CreateCompress and jpeg_CreateDecompress with additional information | 934 | * jpeg_CreateCompress and jpeg_CreateDecompress with additional information |
935 | * passed for version mismatch checking. | 935 | * passed for version mismatch checking. |
936 | * NB: you must set up the error-manager BEFORE calling jpeg_create_xxx. | 936 | * NB: you must set up the error-manager BEFORE calling jpeg_create_xxx. |
937 | */ | 937 | */ |
938 | #define jpeg_create_compress(cinfo) \ | 938 | #define jpeg_create_compress(cinfo) \ |
939 | jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \ | 939 | jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \ |
940 | (size_t) sizeof(struct jpeg_compress_struct)) | 940 | (size_t) sizeof(struct jpeg_compress_struct)) |
941 | #define jpeg_create_decompress(cinfo) \ | 941 | #define jpeg_create_decompress(cinfo) \ |
942 | jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \ | 942 | jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \ |
943 | (size_t) sizeof(struct jpeg_decompress_struct)) | 943 | (size_t) sizeof(struct jpeg_decompress_struct)) |
944 | EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo, | 944 | EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo, |
945 | int version, size_t structsize)); | 945 | int version, size_t structsize)); |
946 | EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo, | 946 | EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo, |
947 | int version, size_t structsize)); | 947 | int version, size_t structsize)); |
948 | /* Destruction of JPEG compression objects */ | 948 | /* Destruction of JPEG compression objects */ |
949 | EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo)); | 949 | EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo)); |
950 | EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo)); | 950 | EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo)); |
951 | 951 | ||
952 | /* Standard data source and destination managers: stdio streams. */ | 952 | /* Standard data source and destination managers: stdio streams. */ |
953 | /* Caller is responsible for opening the file before and closing after. */ | 953 | /* Caller is responsible for opening the file before and closing after. */ |
954 | EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile)); | 954 | EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile)); |
955 | EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FILE * infile)); | 955 | EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FILE * infile)); |
956 | 956 | ||
957 | /* Data source and destination managers: memory buffers. */ | 957 | /* Data source and destination managers: memory buffers. */ |
958 | EXTERN(void) jpeg_mem_dest JPP((j_compress_ptr cinfo, | 958 | EXTERN(void) jpeg_mem_dest JPP((j_compress_ptr cinfo, |
959 | unsigned char ** outbuffer, | 959 | unsigned char ** outbuffer, |
960 | unsigned long * outsize)); | 960 | unsigned long * outsize)); |
961 | EXTERN(void) jpeg_mem_src JPP((j_decompress_ptr cinfo, | 961 | EXTERN(void) jpeg_mem_src JPP((j_decompress_ptr cinfo, |
962 | unsigned char * inbuffer, | 962 | unsigned char * inbuffer, |
963 | unsigned long insize)); | 963 | unsigned long insize)); |
964 | 964 | ||
965 | /* Default parameter setup for compression */ | 965 | /* Default parameter setup for compression */ |
966 | EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo)); | 966 | EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo)); |
967 | /* Compression parameter setup aids */ | 967 | /* Compression parameter setup aids */ |
968 | EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo, | 968 | EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo, |
969 | J_COLOR_SPACE colorspace)); | 969 | J_COLOR_SPACE colorspace)); |
970 | EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo)); | 970 | EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo)); |
971 | EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality, | 971 | EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality, |
972 | boolean force_baseline)); | 972 | boolean force_baseline)); |
973 | EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo, | 973 | EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo, |
974 | int scale_factor, | 974 | int scale_factor, |
975 | boolean force_baseline)); | 975 | boolean force_baseline)); |
976 | EXTERN(void) jpeg_default_qtables JPP((j_compress_ptr cinfo, | 976 | EXTERN(void) jpeg_default_qtables JPP((j_compress_ptr cinfo, |
977 | boolean force_baseline)); | 977 | boolean force_baseline)); |
978 | EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl, | 978 | EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl, |
979 | const unsigned int *basic_table, | 979 | const unsigned int *basic_table, |
980 | int scale_factor, | 980 | int scale_factor, |
981 | boolean force_baseline)); | 981 | boolean force_baseline)); |
982 | EXTERN(int) jpeg_quality_scaling JPP((int quality)); | 982 | EXTERN(int) jpeg_quality_scaling JPP((int quality)); |
983 | EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo)); | 983 | EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo)); |
984 | EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo, | 984 | EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo, |
985 | boolean suppress)); | 985 | boolean suppress)); |
986 | EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo)); | 986 | EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo)); |
987 | EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo)); | 987 | EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo)); |
988 | 988 | ||
989 | /* Main entry points for compression */ | 989 | /* Main entry points for compression */ |
990 | EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo, | 990 | EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo, |
991 | boolean write_all_tables)); | 991 | boolean write_all_tables)); |
992 | EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo, | 992 | EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo, |
993 | JSAMPARRAY scanlines, | 993 | JSAMPARRAY scanlines, |
994 | JDIMENSION num_lines)); | 994 | JDIMENSION num_lines)); |
995 | EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo)); | 995 | EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo)); |
996 | 996 | ||
997 | /* Precalculate JPEG dimensions for current compression parameters. */ | 997 | /* Precalculate JPEG dimensions for current compression parameters. */ |
998 | EXTERN(void) jpeg_calc_jpeg_dimensions JPP((j_compress_ptr cinfo)); | 998 | EXTERN(void) jpeg_calc_jpeg_dimensions JPP((j_compress_ptr cinfo)); |
999 | 999 | ||
1000 | /* Replaces jpeg_write_scanlines when writing raw downsampled data. */ | 1000 | /* Replaces jpeg_write_scanlines when writing raw downsampled data. */ |
1001 | EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo, | 1001 | EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo, |
1002 | JSAMPIMAGE data, | 1002 | JSAMPIMAGE data, |
1003 | JDIMENSION num_lines)); | 1003 | JDIMENSION num_lines)); |
1004 | 1004 | ||
1005 | /* Write a special marker. See libjpeg.txt concerning safe usage. */ | 1005 | /* Write a special marker. See libjpeg.txt concerning safe usage. */ |
1006 | EXTERN(void) jpeg_write_marker | 1006 | EXTERN(void) jpeg_write_marker |
1007 | JPP((j_compress_ptr cinfo, int marker, | 1007 | JPP((j_compress_ptr cinfo, int marker, |
1008 | const JOCTET * dataptr, unsigned int datalen)); | 1008 | const JOCTET * dataptr, unsigned int datalen)); |
1009 | /* Same, but piecemeal. */ | 1009 | /* Same, but piecemeal. */ |
1010 | EXTERN(void) jpeg_write_m_header | 1010 | EXTERN(void) jpeg_write_m_header |
1011 | JPP((j_compress_ptr cinfo, int marker, unsigned int datalen)); | 1011 | JPP((j_compress_ptr cinfo, int marker, unsigned int datalen)); |
1012 | EXTERN(void) jpeg_write_m_byte | 1012 | EXTERN(void) jpeg_write_m_byte |
1013 | JPP((j_compress_ptr cinfo, int val)); | 1013 | JPP((j_compress_ptr cinfo, int val)); |
1014 | 1014 | ||
1015 | /* Alternate compression function: just write an abbreviated table file */ | 1015 | /* Alternate compression function: just write an abbreviated table file */ |
1016 | EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo)); | 1016 | EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo)); |
1017 | 1017 | ||
1018 | /* Decompression startup: read start of JPEG datastream to see what's there */ | 1018 | /* Decompression startup: read start of JPEG datastream to see what's there */ |
1019 | EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo, | 1019 | EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo, |
1020 | boolean require_image)); | 1020 | boolean require_image)); |
1021 | /* Return value is one of: */ | 1021 | /* Return value is one of: */ |
1022 | #define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */ | 1022 | #define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */ |
1023 | #define JPEG_HEADER_OK 1 /* Found valid image datastream */ | 1023 | #define JPEG_HEADER_OK 1 /* Found valid image datastream */ |
1024 | #define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */ | 1024 | #define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */ |
1025 | /* If you pass require_image = TRUE (normal case), you need not check for | 1025 | /* If you pass require_image = TRUE (normal case), you need not check for |
1026 | * a TABLES_ONLY return code; an abbreviated file will cause an error exit. | 1026 | * a TABLES_ONLY return code; an abbreviated file will cause an error exit. |
1027 | * JPEG_SUSPENDED is only possible if you use a data source module that can | 1027 | * JPEG_SUSPENDED is only possible if you use a data source module that can |
1028 | * give a suspension return (the stdio source module doesn't). | 1028 | * give a suspension return (the stdio source module doesn't). |
1029 | */ | 1029 | */ |
1030 | 1030 | ||
1031 | /* Main entry points for decompression */ | 1031 | /* Main entry points for decompression */ |
1032 | EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo)); | 1032 | EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo)); |
1033 | EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo, | 1033 | EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo, |
1034 | JSAMPARRAY scanlines, | 1034 | JSAMPARRAY scanlines, |
1035 | JDIMENSION max_lines)); | 1035 | JDIMENSION max_lines)); |
1036 | EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo)); | 1036 | EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo)); |
1037 | 1037 | ||
1038 | /* Replaces jpeg_read_scanlines when reading raw downsampled data. */ | 1038 | /* Replaces jpeg_read_scanlines when reading raw downsampled data. */ |
1039 | EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo, | 1039 | EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo, |
1040 | JSAMPIMAGE data, | 1040 | JSAMPIMAGE data, |
1041 | JDIMENSION max_lines)); | 1041 | JDIMENSION max_lines)); |
1042 | 1042 | ||
1043 | /* Additional entry points for buffered-image mode. */ | 1043 | /* Additional entry points for buffered-image mode. */ |
1044 | EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo)); | 1044 | EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo)); |
1045 | EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo, | 1045 | EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo, |
1046 | int scan_number)); | 1046 | int scan_number)); |
1047 | EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo)); | 1047 | EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo)); |
1048 | EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo)); | 1048 | EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo)); |
1049 | EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo)); | 1049 | EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo)); |
1050 | EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo)); | 1050 | EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo)); |
1051 | /* Return value is one of: */ | 1051 | /* Return value is one of: */ |
1052 | /* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */ | 1052 | /* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */ |
1053 | #define JPEG_REACHED_SOS 1 /* Reached start of new scan */ | 1053 | #define JPEG_REACHED_SOS 1 /* Reached start of new scan */ |
1054 | #define JPEG_REACHED_EOI 2 /* Reached end of image */ | 1054 | #define JPEG_REACHED_EOI 2 /* Reached end of image */ |
1055 | #define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */ | 1055 | #define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */ |
1056 | #define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */ | 1056 | #define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */ |
1057 | 1057 | ||
1058 | /* Precalculate output dimensions for current decompression parameters. */ | 1058 | /* Precalculate output dimensions for current decompression parameters. */ |
1059 | EXTERN(void) jpeg_core_output_dimensions JPP((j_decompress_ptr cinfo)); | 1059 | EXTERN(void) jpeg_core_output_dimensions JPP((j_decompress_ptr cinfo)); |
1060 | EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo)); | 1060 | EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo)); |
1061 | 1061 | ||
1062 | /* Control saving of COM and APPn markers into marker_list. */ | 1062 | /* Control saving of COM and APPn markers into marker_list. */ |
1063 | EXTERN(void) jpeg_save_markers | 1063 | EXTERN(void) jpeg_save_markers |
1064 | JPP((j_decompress_ptr cinfo, int marker_code, | 1064 | JPP((j_decompress_ptr cinfo, int marker_code, |
1065 | unsigned int length_limit)); | 1065 | unsigned int length_limit)); |
1066 | 1066 | ||
1067 | /* Install a special processing method for COM or APPn markers. */ | 1067 | /* Install a special processing method for COM or APPn markers. */ |
1068 | EXTERN(void) jpeg_set_marker_processor | 1068 | EXTERN(void) jpeg_set_marker_processor |
1069 | JPP((j_decompress_ptr cinfo, int marker_code, | 1069 | JPP((j_decompress_ptr cinfo, int marker_code, |
1070 | jpeg_marker_parser_method routine)); | 1070 | jpeg_marker_parser_method routine)); |
1071 | 1071 | ||
1072 | /* Read or write raw DCT coefficients --- useful for lossless transcoding. */ | 1072 | /* Read or write raw DCT coefficients --- useful for lossless transcoding. */ |
1073 | EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo)); | 1073 | EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo)); |
1074 | EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo, | 1074 | EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo, |
1075 | jvirt_barray_ptr * coef_arrays)); | 1075 | jvirt_barray_ptr * coef_arrays)); |
1076 | EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo, | 1076 | EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo, |
1077 | j_compress_ptr dstinfo)); | 1077 | j_compress_ptr dstinfo)); |
1078 | 1078 | ||
1079 | /* If you choose to abort compression or decompression before completing | 1079 | /* If you choose to abort compression or decompression before completing |
1080 | * jpeg_finish_(de)compress, then you need to clean up to release memory, | 1080 | * jpeg_finish_(de)compress, then you need to clean up to release memory, |
1081 | * temporary files, etc. You can just call jpeg_destroy_(de)compress | 1081 | * temporary files, etc. You can just call jpeg_destroy_(de)compress |
1082 | * if you're done with the JPEG object, but if you want to clean it up and | 1082 | * if you're done with the JPEG object, but if you want to clean it up and |
1083 | * reuse it, call this: | 1083 | * reuse it, call this: |
1084 | */ | 1084 | */ |
1085 | EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo)); | 1085 | EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo)); |
1086 | EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo)); | 1086 | EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo)); |
1087 | 1087 | ||
1088 | /* Generic versions of jpeg_abort and jpeg_destroy that work on either | 1088 | /* Generic versions of jpeg_abort and jpeg_destroy that work on either |
1089 | * flavor of JPEG object. These may be more convenient in some places. | 1089 | * flavor of JPEG object. These may be more convenient in some places. |
1090 | */ | 1090 | */ |
1091 | EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo)); | 1091 | EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo)); |
1092 | EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo)); | 1092 | EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo)); |
1093 | 1093 | ||
1094 | /* Default restart-marker-resync procedure for use by data source modules */ | 1094 | /* Default restart-marker-resync procedure for use by data source modules */ |
1095 | EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo, | 1095 | EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo, |
1096 | int desired)); | 1096 | int desired)); |
1097 | 1097 | ||
1098 | 1098 | ||
1099 | /* These marker codes are exported since applications and data source modules | 1099 | /* These marker codes are exported since applications and data source modules |
1100 | * are likely to want to use them. | 1100 | * are likely to want to use them. |
1101 | */ | 1101 | */ |
1102 | 1102 | ||
1103 | #define JPEG_RST0 0xD0 /* RST0 marker code */ | 1103 | #define JPEG_RST0 0xD0 /* RST0 marker code */ |
1104 | #define JPEG_EOI 0xD9 /* EOI marker code */ | 1104 | #define JPEG_EOI 0xD9 /* EOI marker code */ |
1105 | #define JPEG_APP0 0xE0 /* APP0 marker code */ | 1105 | #define JPEG_APP0 0xE0 /* APP0 marker code */ |
1106 | #define JPEG_COM 0xFE /* COM marker code */ | 1106 | #define JPEG_COM 0xFE /* COM marker code */ |
1107 | 1107 | ||
1108 | 1108 | ||
1109 | /* If we have a brain-damaged compiler that emits warnings (or worse, errors) | 1109 | /* If we have a brain-damaged compiler that emits warnings (or worse, errors) |
1110 | * for structure definitions that are never filled in, keep it quiet by | 1110 | * for structure definitions that are never filled in, keep it quiet by |
1111 | * supplying dummy definitions for the various substructures. | 1111 | * supplying dummy definitions for the various substructures. |
1112 | */ | 1112 | */ |
1113 | 1113 | ||
1114 | #ifdef INCOMPLETE_TYPES_BROKEN | 1114 | #ifdef INCOMPLETE_TYPES_BROKEN |
1115 | #ifndef JPEG_INTERNALS /* will be defined in jpegint.h */ | 1115 | #ifndef JPEG_INTERNALS /* will be defined in jpegint.h */ |
1116 | struct jvirt_sarray_control { long dummy; }; | 1116 | struct jvirt_sarray_control { long dummy; }; |
1117 | struct jvirt_barray_control { long dummy; }; | 1117 | struct jvirt_barray_control { long dummy; }; |
1118 | struct jpeg_comp_master { long dummy; }; | 1118 | struct jpeg_comp_master { long dummy; }; |
1119 | struct jpeg_c_main_controller { long dummy; }; | 1119 | struct jpeg_c_main_controller { long dummy; }; |
1120 | struct jpeg_c_prep_controller { long dummy; }; | 1120 | struct jpeg_c_prep_controller { long dummy; }; |
1121 | struct jpeg_c_coef_controller { long dummy; }; | 1121 | struct jpeg_c_coef_controller { long dummy; }; |
1122 | struct jpeg_marker_writer { long dummy; }; | 1122 | struct jpeg_marker_writer { long dummy; }; |
1123 | struct jpeg_color_converter { long dummy; }; | 1123 | struct jpeg_color_converter { long dummy; }; |
1124 | struct jpeg_downsampler { long dummy; }; | 1124 | struct jpeg_downsampler { long dummy; }; |
1125 | struct jpeg_forward_dct { long dummy; }; | 1125 | struct jpeg_forward_dct { long dummy; }; |
1126 | struct jpeg_entropy_encoder { long dummy; }; | 1126 | struct jpeg_entropy_encoder { long dummy; }; |
1127 | struct jpeg_decomp_master { long dummy; }; | 1127 | struct jpeg_decomp_master { long dummy; }; |
1128 | struct jpeg_d_main_controller { long dummy; }; | 1128 | struct jpeg_d_main_controller { long dummy; }; |
1129 | struct jpeg_d_coef_controller { long dummy; }; | 1129 | struct jpeg_d_coef_controller { long dummy; }; |
1130 | struct jpeg_d_post_controller { long dummy; }; | 1130 | struct jpeg_d_post_controller { long dummy; }; |
1131 | struct jpeg_input_controller { long dummy; }; | 1131 | struct jpeg_input_controller { long dummy; }; |
1132 | struct jpeg_marker_reader { long dummy; }; | 1132 | struct jpeg_marker_reader { long dummy; }; |
1133 | struct jpeg_entropy_decoder { long dummy; }; | 1133 | struct jpeg_entropy_decoder { long dummy; }; |
1134 | struct jpeg_inverse_dct { long dummy; }; | 1134 | struct jpeg_inverse_dct { long dummy; }; |
1135 | struct jpeg_upsampler { long dummy; }; | 1135 | struct jpeg_upsampler { long dummy; }; |
1136 | struct jpeg_color_deconverter { long dummy; }; | 1136 | struct jpeg_color_deconverter { long dummy; }; |
1137 | struct jpeg_color_quantizer { long dummy; }; | 1137 | struct jpeg_color_quantizer { long dummy; }; |
1138 | #endif /* JPEG_INTERNALS */ | 1138 | #endif /* JPEG_INTERNALS */ |
1139 | #endif /* INCOMPLETE_TYPES_BROKEN */ | 1139 | #endif /* INCOMPLETE_TYPES_BROKEN */ |
1140 | 1140 | ||
1141 | 1141 | ||
1142 | /* | 1142 | /* |
1143 | * The JPEG library modules define JPEG_INTERNALS before including this file. | 1143 | * The JPEG library modules define JPEG_INTERNALS before including this file. |
1144 | * The internal structure declarations are read only when that is true. | 1144 | * The internal structure declarations are read only when that is true. |
1145 | * Applications using the library should not include jpegint.h, but may wish | 1145 | * Applications using the library should not include jpegint.h, but may wish |
1146 | * to include jerror.h. | 1146 | * to include jerror.h. |
1147 | */ | 1147 | */ |
1148 | 1148 | ||
1149 | #ifdef JPEG_INTERNALS | 1149 | #ifdef JPEG_INTERNALS |
1150 | #include "jpegint.h" /* fetch private declarations */ | 1150 | #include "jpegint.h" /* fetch private declarations */ |
1151 | #include "jerror.h" /* fetch error codes too */ | 1151 | #include "jerror.h" /* fetch error codes too */ |
1152 | #endif | 1152 | #endif |
1153 | 1153 | ||
1154 | #ifdef __cplusplus | 1154 | #ifdef __cplusplus |
1155 | #ifndef DONT_USE_EXTERN_C | 1155 | #ifndef DONT_USE_EXTERN_C |
1156 | } | 1156 | } |
1157 | #endif | 1157 | #endif |
1158 | #endif | 1158 | #endif |
1159 | 1159 | ||
1160 | #endif /* JPEGLIB_H */ | 1160 | #endif /* JPEGLIB_H */ |