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-rw-r--r--libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdapistd.c550
1 files changed, 275 insertions, 275 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdapistd.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdapistd.c
index e81bd67..9d74537 100644
--- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdapistd.c
+++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdapistd.c
@@ -1,275 +1,275 @@
1/* 1/*
2 * jdapistd.c 2 * jdapistd.c
3 * 3 *
4 * Copyright (C) 1994-1996, Thomas G. Lane. 4 * Copyright (C) 1994-1996, Thomas G. Lane.
5 * This file is part of the Independent JPEG Group's software. 5 * This file is part of the Independent JPEG Group's software.
6 * For conditions of distribution and use, see the accompanying README file. 6 * For conditions of distribution and use, see the accompanying README file.
7 * 7 *
8 * This file contains application interface code for the decompression half 8 * This file contains application interface code for the decompression half
9 * of the JPEG library. These are the "standard" API routines that are 9 * of the JPEG library. These are the "standard" API routines that are
10 * used in the normal full-decompression case. They are not used by a 10 * used in the normal full-decompression case. They are not used by a
11 * transcoding-only application. Note that if an application links in 11 * transcoding-only application. Note that if an application links in
12 * jpeg_start_decompress, it will end up linking in the entire decompressor. 12 * jpeg_start_decompress, it will end up linking in the entire decompressor.
13 * We thus must separate this file from jdapimin.c to avoid linking the 13 * We thus must separate this file from jdapimin.c to avoid linking the
14 * whole decompression library into a transcoder. 14 * whole decompression library into a transcoder.
15 */ 15 */
16 16
17#define JPEG_INTERNALS 17#define JPEG_INTERNALS
18#include "jinclude.h" 18#include "jinclude.h"
19#include "jpeglib.h" 19#include "jpeglib.h"
20 20
21 21
22/* Forward declarations */ 22/* Forward declarations */
23LOCAL(boolean) output_pass_setup JPP((j_decompress_ptr cinfo)); 23LOCAL(boolean) output_pass_setup JPP((j_decompress_ptr cinfo));
24 24
25 25
26/* 26/*
27 * Decompression initialization. 27 * Decompression initialization.
28 * jpeg_read_header must be completed before calling this. 28 * jpeg_read_header must be completed before calling this.
29 * 29 *
30 * If a multipass operating mode was selected, this will do all but the 30 * If a multipass operating mode was selected, this will do all but the
31 * last pass, and thus may take a great deal of time. 31 * last pass, and thus may take a great deal of time.
32 * 32 *
33 * Returns FALSE if suspended. The return value need be inspected only if 33 * Returns FALSE if suspended. The return value need be inspected only if
34 * a suspending data source is used. 34 * a suspending data source is used.
35 */ 35 */
36 36
37GLOBAL(boolean) 37GLOBAL(boolean)
38jpeg_start_decompress (j_decompress_ptr cinfo) 38jpeg_start_decompress (j_decompress_ptr cinfo)
39{ 39{
40 if (cinfo->global_state == DSTATE_READY) { 40 if (cinfo->global_state == DSTATE_READY) {
41 /* First call: initialize master control, select active modules */ 41 /* First call: initialize master control, select active modules */
42 jinit_master_decompress(cinfo); 42 jinit_master_decompress(cinfo);
43 if (cinfo->buffered_image) { 43 if (cinfo->buffered_image) {
44 /* No more work here; expecting jpeg_start_output next */ 44 /* No more work here; expecting jpeg_start_output next */
45 cinfo->global_state = DSTATE_BUFIMAGE; 45 cinfo->global_state = DSTATE_BUFIMAGE;
46 return TRUE; 46 return TRUE;
47 } 47 }
48 cinfo->global_state = DSTATE_PRELOAD; 48 cinfo->global_state = DSTATE_PRELOAD;
49 } 49 }
50 if (cinfo->global_state == DSTATE_PRELOAD) { 50 if (cinfo->global_state == DSTATE_PRELOAD) {
51 /* If file has multiple scans, absorb them all into the coef buffer */ 51 /* If file has multiple scans, absorb them all into the coef buffer */
52 if (cinfo->inputctl->has_multiple_scans) { 52 if (cinfo->inputctl->has_multiple_scans) {
53#ifdef D_MULTISCAN_FILES_SUPPORTED 53#ifdef D_MULTISCAN_FILES_SUPPORTED
54 for (;;) { 54 for (;;) {
55 int retcode; 55 int retcode;
56 /* Call progress monitor hook if present */ 56 /* Call progress monitor hook if present */
57 if (cinfo->progress != NULL) 57 if (cinfo->progress != NULL)
58 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); 58 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
59 /* Absorb some more input */ 59 /* Absorb some more input */
60 retcode = (*cinfo->inputctl->consume_input) (cinfo); 60 retcode = (*cinfo->inputctl->consume_input) (cinfo);
61 if (retcode == JPEG_SUSPENDED) 61 if (retcode == JPEG_SUSPENDED)
62 return FALSE; 62 return FALSE;
63 if (retcode == JPEG_REACHED_EOI) 63 if (retcode == JPEG_REACHED_EOI)
64 break; 64 break;
65 /* Advance progress counter if appropriate */ 65 /* Advance progress counter if appropriate */
66 if (cinfo->progress != NULL && 66 if (cinfo->progress != NULL &&
67 (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) { 67 (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
68 if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) { 68 if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
69 /* jdmaster underestimated number of scans; ratchet up one scan */ 69 /* jdmaster underestimated number of scans; ratchet up one scan */
70 cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows; 70 cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
71 } 71 }
72 } 72 }
73 } 73 }
74#else 74#else
75 ERREXIT(cinfo, JERR_NOT_COMPILED); 75 ERREXIT(cinfo, JERR_NOT_COMPILED);
76#endif /* D_MULTISCAN_FILES_SUPPORTED */ 76#endif /* D_MULTISCAN_FILES_SUPPORTED */
77 } 77 }
78 cinfo->output_scan_number = cinfo->input_scan_number; 78 cinfo->output_scan_number = cinfo->input_scan_number;
79 } else if (cinfo->global_state != DSTATE_PRESCAN) 79 } else if (cinfo->global_state != DSTATE_PRESCAN)
80 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 80 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
81 /* Perform any dummy output passes, and set up for the final pass */ 81 /* Perform any dummy output passes, and set up for the final pass */
82 return output_pass_setup(cinfo); 82 return output_pass_setup(cinfo);
83} 83}
84 84
85 85
86/* 86/*
87 * Set up for an output pass, and perform any dummy pass(es) needed. 87 * Set up for an output pass, and perform any dummy pass(es) needed.
88 * Common subroutine for jpeg_start_decompress and jpeg_start_output. 88 * Common subroutine for jpeg_start_decompress and jpeg_start_output.
89 * Entry: global_state = DSTATE_PRESCAN only if previously suspended. 89 * Entry: global_state = DSTATE_PRESCAN only if previously suspended.
90 * Exit: If done, returns TRUE and sets global_state for proper output mode. 90 * Exit: If done, returns TRUE and sets global_state for proper output mode.
91 * If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN. 91 * If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN.
92 */ 92 */
93 93
94LOCAL(boolean) 94LOCAL(boolean)
95output_pass_setup (j_decompress_ptr cinfo) 95output_pass_setup (j_decompress_ptr cinfo)
96{ 96{
97 if (cinfo->global_state != DSTATE_PRESCAN) { 97 if (cinfo->global_state != DSTATE_PRESCAN) {
98 /* First call: do pass setup */ 98 /* First call: do pass setup */
99 (*cinfo->master->prepare_for_output_pass) (cinfo); 99 (*cinfo->master->prepare_for_output_pass) (cinfo);
100 cinfo->output_scanline = 0; 100 cinfo->output_scanline = 0;
101 cinfo->global_state = DSTATE_PRESCAN; 101 cinfo->global_state = DSTATE_PRESCAN;
102 } 102 }
103 /* Loop over any required dummy passes */ 103 /* Loop over any required dummy passes */
104 while (cinfo->master->is_dummy_pass) { 104 while (cinfo->master->is_dummy_pass) {
105#ifdef QUANT_2PASS_SUPPORTED 105#ifdef QUANT_2PASS_SUPPORTED
106 /* Crank through the dummy pass */ 106 /* Crank through the dummy pass */
107 while (cinfo->output_scanline < cinfo->output_height) { 107 while (cinfo->output_scanline < cinfo->output_height) {
108 JDIMENSION last_scanline; 108 JDIMENSION last_scanline;
109 /* Call progress monitor hook if present */ 109 /* Call progress monitor hook if present */
110 if (cinfo->progress != NULL) { 110 if (cinfo->progress != NULL) {
111 cinfo->progress->pass_counter = (long) cinfo->output_scanline; 111 cinfo->progress->pass_counter = (long) cinfo->output_scanline;
112 cinfo->progress->pass_limit = (long) cinfo->output_height; 112 cinfo->progress->pass_limit = (long) cinfo->output_height;
113 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); 113 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
114 } 114 }
115 /* Process some data */ 115 /* Process some data */
116 last_scanline = cinfo->output_scanline; 116 last_scanline = cinfo->output_scanline;
117 (*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL, 117 (*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL,
118 &cinfo->output_scanline, (JDIMENSION) 0); 118 &cinfo->output_scanline, (JDIMENSION) 0);
119 if (cinfo->output_scanline == last_scanline) 119 if (cinfo->output_scanline == last_scanline)
120 return FALSE; /* No progress made, must suspend */ 120 return FALSE; /* No progress made, must suspend */
121 } 121 }
122 /* Finish up dummy pass, and set up for another one */ 122 /* Finish up dummy pass, and set up for another one */
123 (*cinfo->master->finish_output_pass) (cinfo); 123 (*cinfo->master->finish_output_pass) (cinfo);
124 (*cinfo->master->prepare_for_output_pass) (cinfo); 124 (*cinfo->master->prepare_for_output_pass) (cinfo);
125 cinfo->output_scanline = 0; 125 cinfo->output_scanline = 0;
126#else 126#else
127 ERREXIT(cinfo, JERR_NOT_COMPILED); 127 ERREXIT(cinfo, JERR_NOT_COMPILED);
128#endif /* QUANT_2PASS_SUPPORTED */ 128#endif /* QUANT_2PASS_SUPPORTED */
129 } 129 }
130 /* Ready for application to drive output pass through 130 /* Ready for application to drive output pass through
131 * jpeg_read_scanlines or jpeg_read_raw_data. 131 * jpeg_read_scanlines or jpeg_read_raw_data.
132 */ 132 */
133 cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING; 133 cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING;
134 return TRUE; 134 return TRUE;
135} 135}
136 136
137 137
138/* 138/*
139 * Read some scanlines of data from the JPEG decompressor. 139 * Read some scanlines of data from the JPEG decompressor.
140 * 140 *
141 * The return value will be the number of lines actually read. 141 * The return value will be the number of lines actually read.
142 * This may be less than the number requested in several cases, 142 * This may be less than the number requested in several cases,
143 * including bottom of image, data source suspension, and operating 143 * including bottom of image, data source suspension, and operating
144 * modes that emit multiple scanlines at a time. 144 * modes that emit multiple scanlines at a time.
145 * 145 *
146 * Note: we warn about excess calls to jpeg_read_scanlines() since 146 * Note: we warn about excess calls to jpeg_read_scanlines() since
147 * this likely signals an application programmer error. However, 147 * this likely signals an application programmer error. However,
148 * an oversize buffer (max_lines > scanlines remaining) is not an error. 148 * an oversize buffer (max_lines > scanlines remaining) is not an error.
149 */ 149 */
150 150
151GLOBAL(JDIMENSION) 151GLOBAL(JDIMENSION)
152jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines, 152jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,
153 JDIMENSION max_lines) 153 JDIMENSION max_lines)
154{ 154{
155 JDIMENSION row_ctr; 155 JDIMENSION row_ctr;
156 156
157 if (cinfo->global_state != DSTATE_SCANNING) 157 if (cinfo->global_state != DSTATE_SCANNING)
158 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 158 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
159 if (cinfo->output_scanline >= cinfo->output_height) { 159 if (cinfo->output_scanline >= cinfo->output_height) {
160 WARNMS(cinfo, JWRN_TOO_MUCH_DATA); 160 WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
161 return 0; 161 return 0;
162 } 162 }
163 163
164 /* Call progress monitor hook if present */ 164 /* Call progress monitor hook if present */
165 if (cinfo->progress != NULL) { 165 if (cinfo->progress != NULL) {
166 cinfo->progress->pass_counter = (long) cinfo->output_scanline; 166 cinfo->progress->pass_counter = (long) cinfo->output_scanline;
167 cinfo->progress->pass_limit = (long) cinfo->output_height; 167 cinfo->progress->pass_limit = (long) cinfo->output_height;
168 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); 168 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
169 } 169 }
170 170
171 /* Process some data */ 171 /* Process some data */
172 row_ctr = 0; 172 row_ctr = 0;
173 (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines); 173 (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);
174 cinfo->output_scanline += row_ctr; 174 cinfo->output_scanline += row_ctr;
175 return row_ctr; 175 return row_ctr;
176} 176}
177 177
178 178
179/* 179/*
180 * Alternate entry point to read raw data. 180 * Alternate entry point to read raw data.
181 * Processes exactly one iMCU row per call, unless suspended. 181 * Processes exactly one iMCU row per call, unless suspended.
182 */ 182 */
183 183
184GLOBAL(JDIMENSION) 184GLOBAL(JDIMENSION)
185jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data, 185jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
186 JDIMENSION max_lines) 186 JDIMENSION max_lines)
187{ 187{
188 JDIMENSION lines_per_iMCU_row; 188 JDIMENSION lines_per_iMCU_row;
189 189
190 if (cinfo->global_state != DSTATE_RAW_OK) 190 if (cinfo->global_state != DSTATE_RAW_OK)
191 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 191 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
192 if (cinfo->output_scanline >= cinfo->output_height) { 192 if (cinfo->output_scanline >= cinfo->output_height) {
193 WARNMS(cinfo, JWRN_TOO_MUCH_DATA); 193 WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
194 return 0; 194 return 0;
195 } 195 }
196 196
197 /* Call progress monitor hook if present */ 197 /* Call progress monitor hook if present */
198 if (cinfo->progress != NULL) { 198 if (cinfo->progress != NULL) {
199 cinfo->progress->pass_counter = (long) cinfo->output_scanline; 199 cinfo->progress->pass_counter = (long) cinfo->output_scanline;
200 cinfo->progress->pass_limit = (long) cinfo->output_height; 200 cinfo->progress->pass_limit = (long) cinfo->output_height;
201 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); 201 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
202 } 202 }
203 203
204 /* Verify that at least one iMCU row can be returned. */ 204 /* Verify that at least one iMCU row can be returned. */
205 lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size; 205 lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size;
206 if (max_lines < lines_per_iMCU_row) 206 if (max_lines < lines_per_iMCU_row)
207 ERREXIT(cinfo, JERR_BUFFER_SIZE); 207 ERREXIT(cinfo, JERR_BUFFER_SIZE);
208 208
209 /* Decompress directly into user's buffer. */ 209 /* Decompress directly into user's buffer. */
210 if (! (*cinfo->coef->decompress_data) (cinfo, data)) 210 if (! (*cinfo->coef->decompress_data) (cinfo, data))
211 return 0; /* suspension forced, can do nothing more */ 211 return 0; /* suspension forced, can do nothing more */
212 212
213 /* OK, we processed one iMCU row. */ 213 /* OK, we processed one iMCU row. */
214 cinfo->output_scanline += lines_per_iMCU_row; 214 cinfo->output_scanline += lines_per_iMCU_row;
215 return lines_per_iMCU_row; 215 return lines_per_iMCU_row;
216} 216}
217 217
218 218
219/* Additional entry points for buffered-image mode. */ 219/* Additional entry points for buffered-image mode. */
220 220
221#ifdef D_MULTISCAN_FILES_SUPPORTED 221#ifdef D_MULTISCAN_FILES_SUPPORTED
222 222
223/* 223/*
224 * Initialize for an output pass in buffered-image mode. 224 * Initialize for an output pass in buffered-image mode.
225 */ 225 */
226 226
227GLOBAL(boolean) 227GLOBAL(boolean)
228jpeg_start_output (j_decompress_ptr cinfo, int scan_number) 228jpeg_start_output (j_decompress_ptr cinfo, int scan_number)
229{ 229{
230 if (cinfo->global_state != DSTATE_BUFIMAGE && 230 if (cinfo->global_state != DSTATE_BUFIMAGE &&
231 cinfo->global_state != DSTATE_PRESCAN) 231 cinfo->global_state != DSTATE_PRESCAN)
232 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 232 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
233 /* Limit scan number to valid range */ 233 /* Limit scan number to valid range */
234 if (scan_number <= 0) 234 if (scan_number <= 0)
235 scan_number = 1; 235 scan_number = 1;
236 if (cinfo->inputctl->eoi_reached && 236 if (cinfo->inputctl->eoi_reached &&
237 scan_number > cinfo->input_scan_number) 237 scan_number > cinfo->input_scan_number)
238 scan_number = cinfo->input_scan_number; 238 scan_number = cinfo->input_scan_number;
239 cinfo->output_scan_number = scan_number; 239 cinfo->output_scan_number = scan_number;
240 /* Perform any dummy output passes, and set up for the real pass */ 240 /* Perform any dummy output passes, and set up for the real pass */
241 return output_pass_setup(cinfo); 241 return output_pass_setup(cinfo);
242} 242}
243 243
244 244
245/* 245/*
246 * Finish up after an output pass in buffered-image mode. 246 * Finish up after an output pass in buffered-image mode.
247 * 247 *
248 * Returns FALSE if suspended. The return value need be inspected only if 248 * Returns FALSE if suspended. The return value need be inspected only if
249 * a suspending data source is used. 249 * a suspending data source is used.
250 */ 250 */
251 251
252GLOBAL(boolean) 252GLOBAL(boolean)
253jpeg_finish_output (j_decompress_ptr cinfo) 253jpeg_finish_output (j_decompress_ptr cinfo)
254{ 254{
255 if ((cinfo->global_state == DSTATE_SCANNING || 255 if ((cinfo->global_state == DSTATE_SCANNING ||
256 cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) { 256 cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) {
257 /* Terminate this pass. */ 257 /* Terminate this pass. */
258 /* We do not require the whole pass to have been completed. */ 258 /* We do not require the whole pass to have been completed. */
259 (*cinfo->master->finish_output_pass) (cinfo); 259 (*cinfo->master->finish_output_pass) (cinfo);
260 cinfo->global_state = DSTATE_BUFPOST; 260 cinfo->global_state = DSTATE_BUFPOST;
261 } else if (cinfo->global_state != DSTATE_BUFPOST) { 261 } else if (cinfo->global_state != DSTATE_BUFPOST) {
262 /* BUFPOST = repeat call after a suspension, anything else is error */ 262 /* BUFPOST = repeat call after a suspension, anything else is error */
263 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); 263 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
264 } 264 }
265 /* Read markers looking for SOS or EOI */ 265 /* Read markers looking for SOS or EOI */
266 while (cinfo->input_scan_number <= cinfo->output_scan_number && 266 while (cinfo->input_scan_number <= cinfo->output_scan_number &&
267 ! cinfo->inputctl->eoi_reached) { 267 ! cinfo->inputctl->eoi_reached) {
268 if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED) 268 if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
269 return FALSE; /* Suspend, come back later */ 269 return FALSE; /* Suspend, come back later */
270 } 270 }
271 cinfo->global_state = DSTATE_BUFIMAGE; 271 cinfo->global_state = DSTATE_BUFIMAGE;
272 return TRUE; 272 return TRUE;
273} 273}
274 274
275#endif /* D_MULTISCAN_FILES_SUPPORTED */ 275#endif /* D_MULTISCAN_FILES_SUPPORTED */