Visualization Library 2.0.0-b5

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jcmaster.c
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1 /*
2  * jcmaster.c
3  *
4  * Copyright (C) 1991-1997, Thomas G. Lane.
5  * This file is part of the Independent JPEG Group's software.
6  * For conditions of distribution and use, see the accompanying README file.
7  *
8  * This file contains master control logic for the JPEG compressor.
9  * These routines are concerned with parameter validation, initial setup,
10  * and inter-pass control (determining the number of passes and the work
11  * to be done in each pass).
12  */
13 
14 #define JPEG_INTERNALS
15 #include "jinclude.h"
16 #include "jpeglib.h"
17 
18 
19 /* Private state */
20 
21 typedef enum {
22  main_pass, /* input data, also do first output step */
23  huff_opt_pass, /* Huffman code optimization pass */
24  output_pass /* data output pass */
25 } c_pass_type;
26 
27 typedef struct {
28  struct jpeg_comp_master pub; /* public fields */
29 
30  c_pass_type pass_type; /* the type of the current pass */
31 
32  int pass_number; /* # of passes completed */
33  int total_passes; /* total # of passes needed */
34 
35  int scan_number; /* current index in scan_info[] */
36 } my_comp_master;
37 
38 typedef my_comp_master * my_master_ptr;
39 
40 
41 /*
42  * Support routines that do various essential calculations.
43  */
44 
45 LOCAL(void)
47 /* Do computations that are needed before master selection phase */
48 {
49  int ci;
51  long samplesperrow;
52  JDIMENSION jd_samplesperrow;
53 
54  /* Sanity check on image dimensions */
55  if (cinfo->image_height <= 0 || cinfo->image_width <= 0
56  || cinfo->num_components <= 0 || cinfo->input_components <= 0)
57  ERREXIT(cinfo, JERR_EMPTY_IMAGE);
58 
59  /* Make sure image isn't bigger than I can handle */
60  if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||
61  (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)
62  ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
63 
64  /* Width of an input scanline must be representable as JDIMENSION. */
65  samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components;
66  jd_samplesperrow = (JDIMENSION) samplesperrow;
67  if ((long) jd_samplesperrow != samplesperrow)
68  ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
69 
70  /* For now, precision must match compiled-in value... */
71  if (cinfo->data_precision != BITS_IN_JSAMPLE)
72  ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
73 
74  /* Check that number of components won't exceed internal array sizes */
75  if (cinfo->num_components > MAX_COMPONENTS)
76  ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
78 
79  /* Compute maximum sampling factors; check factor validity */
80  cinfo->max_h_samp_factor = 1;
81  cinfo->max_v_samp_factor = 1;
82  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
83  ci++, compptr++) {
84  if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
85  compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
86  ERREXIT(cinfo, JERR_BAD_SAMPLING);
87  cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
88  compptr->h_samp_factor);
89  cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,
90  compptr->v_samp_factor);
91  }
92 
93  /* Compute dimensions of components */
94  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
95  ci++, compptr++) {
96  /* Fill in the correct component_index value; don't rely on application */
97  compptr->component_index = ci;
98  /* For compression, we never do DCT scaling. */
99  compptr->DCT_scaled_size = DCTSIZE;
100  /* Size in DCT blocks */
101  compptr->width_in_blocks = (JDIMENSION)
102  jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
103  (long) (cinfo->max_h_samp_factor * DCTSIZE));
104  compptr->height_in_blocks = (JDIMENSION)
105  jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
106  (long) (cinfo->max_v_samp_factor * DCTSIZE));
107  /* Size in samples */
108  compptr->downsampled_width = (JDIMENSION)
109  jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
110  (long) cinfo->max_h_samp_factor);
111  compptr->downsampled_height = (JDIMENSION)
112  jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
113  (long) cinfo->max_v_samp_factor);
114  /* Mark component needed (this flag isn't actually used for compression) */
115  compptr->component_needed = TRUE;
116  }
117 
118  /* Compute number of fully interleaved MCU rows (number of times that
119  * main controller will call coefficient controller).
120  */
121  cinfo->total_iMCU_rows = (JDIMENSION)
122  jdiv_round_up((long) cinfo->image_height,
123  (long) (cinfo->max_v_samp_factor*DCTSIZE));
124 }
125 
126 
127 #ifdef C_MULTISCAN_FILES_SUPPORTED
128 
129 LOCAL(void)
131 /* Verify that the scan script in cinfo->scan_info[] is valid; also
132  * determine whether it uses progressive JPEG, and set cinfo->progressive_mode.
133  */
134 {
135  const jpeg_scan_info * scanptr;
136  int scanno, ncomps, ci, coefi, thisi;
137  int Ss, Se, Ah, Al;
138  boolean component_sent[MAX_COMPONENTS];
139 #ifdef C_PROGRESSIVE_SUPPORTED
140  int * last_bitpos_ptr;
141  int last_bitpos[MAX_COMPONENTS][DCTSIZE2];
142  /* -1 until that coefficient has been seen; then last Al for it */
143 #endif
144 
145  if (cinfo->num_scans <= 0)
146  ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0);
147 
148  /* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1;
149  * for progressive JPEG, no scan can have this.
150  */
151  scanptr = cinfo->scan_info;
152  if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2-1) {
153 #ifdef C_PROGRESSIVE_SUPPORTED
154  cinfo->progressive_mode = TRUE;
155  last_bitpos_ptr = & last_bitpos[0][0];
156  for (ci = 0; ci < cinfo->num_components; ci++)
157  for (coefi = 0; coefi < DCTSIZE2; coefi++)
158  *last_bitpos_ptr++ = -1;
159 #else
160  ERREXIT(cinfo, JERR_NOT_COMPILED);
161 #endif
162  } else {
163  cinfo->progressive_mode = FALSE;
164  for (ci = 0; ci < cinfo->num_components; ci++)
165  component_sent[ci] = FALSE;
166  }
167 
168  for (scanno = 1; scanno <= cinfo->num_scans; scanptr++, scanno++) {
169  /* Validate component indexes */
170  ncomps = scanptr->comps_in_scan;
171  if (ncomps <= 0 || ncomps > MAX_COMPS_IN_SCAN)
172  ERREXIT2(cinfo, JERR_COMPONENT_COUNT, ncomps, MAX_COMPS_IN_SCAN);
173  for (ci = 0; ci < ncomps; ci++) {
174  thisi = scanptr->component_index[ci];
175  if (thisi < 0 || thisi >= cinfo->num_components)
176  ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
177  /* Components must appear in SOF order within each scan */
178  if (ci > 0 && thisi <= scanptr->component_index[ci-1])
179  ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
180  }
181  /* Validate progression parameters */
182  Ss = scanptr->Ss;
183  Se = scanptr->Se;
184  Ah = scanptr->Ah;
185  Al = scanptr->Al;
186  if (cinfo->progressive_mode) {
187 #ifdef C_PROGRESSIVE_SUPPORTED
188  /* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that
189  * seems wrong: the upper bound ought to depend on data precision.
190  * Perhaps they really meant 0..N+1 for N-bit precision.
191  * Here we allow 0..10 for 8-bit data; Al larger than 10 results in
192  * out-of-range reconstructed DC values during the first DC scan,
193  * which might cause problems for some decoders.
194  */
195 #if BITS_IN_JSAMPLE == 8
196 #define MAX_AH_AL 10
197 #else
198 #define MAX_AH_AL 13
199 #endif
200  if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 ||
201  Ah < 0 || Ah > MAX_AH_AL || Al < 0 || Al > MAX_AH_AL)
202  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
203  if (Ss == 0) {
204  if (Se != 0) /* DC and AC together not OK */
205  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
206  } else {
207  if (ncomps != 1) /* AC scans must be for only one component */
208  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
209  }
210  for (ci = 0; ci < ncomps; ci++) {
211  last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0];
212  if (Ss != 0 && last_bitpos_ptr[0] < 0) /* AC without prior DC scan */
213  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
214  for (coefi = Ss; coefi <= Se; coefi++) {
215  if (last_bitpos_ptr[coefi] < 0) {
216  /* first scan of this coefficient */
217  if (Ah != 0)
218  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
219  } else {
220  /* not first scan */
221  if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1)
222  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
223  }
224  last_bitpos_ptr[coefi] = Al;
225  }
226  }
227 #endif
228  } else {
229  /* For sequential JPEG, all progression parameters must be these: */
230  if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0)
231  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
232  /* Make sure components are not sent twice */
233  for (ci = 0; ci < ncomps; ci++) {
234  thisi = scanptr->component_index[ci];
235  if (component_sent[thisi])
236  ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
237  component_sent[thisi] = TRUE;
238  }
239  }
240  }
241 
242  /* Now verify that everything got sent. */
243  if (cinfo->progressive_mode) {
244 #ifdef C_PROGRESSIVE_SUPPORTED
245  /* For progressive mode, we only check that at least some DC data
246  * got sent for each component; the spec does not require that all bits
247  * of all coefficients be transmitted. Would it be wiser to enforce
248  * transmission of all coefficient bits??
249  */
250  for (ci = 0; ci < cinfo->num_components; ci++) {
251  if (last_bitpos[ci][0] < 0)
252  ERREXIT(cinfo, JERR_MISSING_DATA);
253  }
254 #endif
255  } else {
256  for (ci = 0; ci < cinfo->num_components; ci++) {
257  if (! component_sent[ci])
258  ERREXIT(cinfo, JERR_MISSING_DATA);
259  }
260  }
261 }
262 
263 #endif /* C_MULTISCAN_FILES_SUPPORTED */
264 
265 
266 LOCAL(void)
268 /* Set up the scan parameters for the current scan */
269 {
270  int ci;
271 
272 #ifdef C_MULTISCAN_FILES_SUPPORTED
273  if (cinfo->scan_info != NULL) {
274  /* Prepare for current scan --- the script is already validated */
275  my_master_ptr master = (my_master_ptr) cinfo->master;
276  const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number;
277 
278  cinfo->comps_in_scan = scanptr->comps_in_scan;
279  for (ci = 0; ci < scanptr->comps_in_scan; ci++) {
280  cinfo->cur_comp_info[ci] =
281  &cinfo->comp_info[scanptr->component_index[ci]];
282  }
283  cinfo->Ss = scanptr->Ss;
284  cinfo->Se = scanptr->Se;
285  cinfo->Ah = scanptr->Ah;
286  cinfo->Al = scanptr->Al;
287  }
288  else
289 #endif
290  {
291  /* Prepare for single sequential-JPEG scan containing all components */
292  if (cinfo->num_components > MAX_COMPS_IN_SCAN)
293  ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
295  cinfo->comps_in_scan = cinfo->num_components;
296  for (ci = 0; ci < cinfo->num_components; ci++) {
297  cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci];
298  }
299  cinfo->Ss = 0;
300  cinfo->Se = DCTSIZE2-1;
301  cinfo->Ah = 0;
302  cinfo->Al = 0;
303  }
304 }
305 
306 
307 LOCAL(void)
309 /* Do computations that are needed before processing a JPEG scan */
310 /* cinfo->comps_in_scan and cinfo->cur_comp_info[] are already set */
311 {
312  int ci, mcublks, tmp;
314 
315  if (cinfo->comps_in_scan == 1) {
316 
317  /* Noninterleaved (single-component) scan */
318  compptr = cinfo->cur_comp_info[0];
319 
320  /* Overall image size in MCUs */
321  cinfo->MCUs_per_row = compptr->width_in_blocks;
322  cinfo->MCU_rows_in_scan = compptr->height_in_blocks;
323 
324  /* For noninterleaved scan, always one block per MCU */
325  compptr->MCU_width = 1;
326  compptr->MCU_height = 1;
327  compptr->MCU_blocks = 1;
328  compptr->MCU_sample_width = DCTSIZE;
329  compptr->last_col_width = 1;
330  /* For noninterleaved scans, it is convenient to define last_row_height
331  * as the number of block rows present in the last iMCU row.
332  */
333  tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
334  if (tmp == 0) tmp = compptr->v_samp_factor;
335  compptr->last_row_height = tmp;
336 
337  /* Prepare array describing MCU composition */
338  cinfo->blocks_in_MCU = 1;
339  cinfo->MCU_membership[0] = 0;
340 
341  } else {
342 
343  /* Interleaved (multi-component) scan */
344  if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)
345  ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,
347 
348  /* Overall image size in MCUs */
349  cinfo->MCUs_per_row = (JDIMENSION)
350  jdiv_round_up((long) cinfo->image_width,
351  (long) (cinfo->max_h_samp_factor*DCTSIZE));
352  cinfo->MCU_rows_in_scan = (JDIMENSION)
353  jdiv_round_up((long) cinfo->image_height,
354  (long) (cinfo->max_v_samp_factor*DCTSIZE));
355 
356  cinfo->blocks_in_MCU = 0;
357 
358  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
359  compptr = cinfo->cur_comp_info[ci];
360  /* Sampling factors give # of blocks of component in each MCU */
361  compptr->MCU_width = compptr->h_samp_factor;
362  compptr->MCU_height = compptr->v_samp_factor;
363  compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;
364  compptr->MCU_sample_width = compptr->MCU_width * DCTSIZE;
365  /* Figure number of non-dummy blocks in last MCU column & row */
366  tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);
367  if (tmp == 0) tmp = compptr->MCU_width;
368  compptr->last_col_width = tmp;
369  tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);
370  if (tmp == 0) tmp = compptr->MCU_height;
371  compptr->last_row_height = tmp;
372  /* Prepare array describing MCU composition */
373  mcublks = compptr->MCU_blocks;
374  if (cinfo->blocks_in_MCU + mcublks > C_MAX_BLOCKS_IN_MCU)
375  ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
376  while (mcublks-- > 0) {
377  cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
378  }
379  }
380 
381  }
382 
383  /* Convert restart specified in rows to actual MCU count. */
384  /* Note that count must fit in 16 bits, so we provide limiting. */
385  if (cinfo->restart_in_rows > 0) {
386  long nominal = (long) cinfo->restart_in_rows * (long) cinfo->MCUs_per_row;
387  cinfo->restart_interval = (unsigned int) MIN(nominal, 65535L);
388  }
389 }
390 
391 
392 /*
393  * Per-pass setup.
394  * This is called at the beginning of each pass. We determine which modules
395  * will be active during this pass and give them appropriate start_pass calls.
396  * We also set is_last_pass to indicate whether any more passes will be
397  * required.
398  */
399 
400 METHODDEF(void)
402 {
403  my_master_ptr master = (my_master_ptr) cinfo->master;
404 
405  switch (master->pass_type) {
406  case main_pass:
407  /* Initial pass: will collect input data, and do either Huffman
408  * optimization or data output for the first scan.
409  */
410  select_scan_parameters(cinfo);
411  per_scan_setup(cinfo);
412  if (! cinfo->raw_data_in) {
413  (*cinfo->cconvert->start_pass) (cinfo);
414  (*cinfo->downsample->start_pass) (cinfo);
415  (*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU);
416  }
417  (*cinfo->fdct->start_pass) (cinfo);
418  (*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding);
419  (*cinfo->coef->start_pass) (cinfo,
420  (master->total_passes > 1 ?
422  (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
423  if (cinfo->optimize_coding) {
424  /* No immediate data output; postpone writing frame/scan headers */
425  master->pub.call_pass_startup = FALSE;
426  } else {
427  /* Will write frame/scan headers at first jpeg_write_scanlines call */
428  master->pub.call_pass_startup = TRUE;
429  }
430  break;
431 #ifdef ENTROPY_OPT_SUPPORTED
432  case huff_opt_pass:
433  /* Do Huffman optimization for a scan after the first one. */
434  select_scan_parameters(cinfo);
435  per_scan_setup(cinfo);
436  if (cinfo->Ss != 0 || cinfo->Ah == 0 || cinfo->arith_code) {
437  (*cinfo->entropy->start_pass) (cinfo, TRUE);
438  (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
439  master->pub.call_pass_startup = FALSE;
440  break;
441  }
442  /* Special case: Huffman DC refinement scans need no Huffman table
443  * and therefore we can skip the optimization pass for them.
444  */
445  master->pass_type = output_pass;
446  master->pass_number++;
447  /*FALLTHROUGH*/
448 #endif
449  case output_pass:
450  /* Do a data-output pass. */
451  /* We need not repeat per-scan setup if prior optimization pass did it. */
452  if (! cinfo->optimize_coding) {
453  select_scan_parameters(cinfo);
454  per_scan_setup(cinfo);
455  }
456  (*cinfo->entropy->start_pass) (cinfo, FALSE);
457  (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
458  /* We emit frame/scan headers now */
459  if (master->scan_number == 0)
460  (*cinfo->marker->write_frame_header) (cinfo);
461  (*cinfo->marker->write_scan_header) (cinfo);
462  master->pub.call_pass_startup = FALSE;
463  break;
464  default:
465  ERREXIT(cinfo, JERR_NOT_COMPILED);
466  }
467 
468  master->pub.is_last_pass = (master->pass_number == master->total_passes-1);
469 
470  /* Set up progress monitor's pass info if present */
471  if (cinfo->progress != NULL) {
472  cinfo->progress->completed_passes = master->pass_number;
473  cinfo->progress->total_passes = master->total_passes;
474  }
475 }
476 
477 
478 /*
479  * Special start-of-pass hook.
480  * This is called by jpeg_write_scanlines if call_pass_startup is TRUE.
481  * In single-pass processing, we need this hook because we don't want to
482  * write frame/scan headers during jpeg_start_compress; we want to let the
483  * application write COM markers etc. between jpeg_start_compress and the
484  * jpeg_write_scanlines loop.
485  * In multi-pass processing, this routine is not used.
486  */
487 
488 METHODDEF(void)
490 {
491  cinfo->master->call_pass_startup = FALSE; /* reset flag so call only once */
492 
493  (*cinfo->marker->write_frame_header) (cinfo);
494  (*cinfo->marker->write_scan_header) (cinfo);
495 }
496 
497 
498 /*
499  * Finish up at end of pass.
500  */
501 
502 METHODDEF(void)
504 {
505  my_master_ptr master = (my_master_ptr) cinfo->master;
506 
507  /* The entropy coder always needs an end-of-pass call,
508  * either to analyze statistics or to flush its output buffer.
509  */
510  (*cinfo->entropy->finish_pass) (cinfo);
511 
512  /* Update state for next pass */
513  switch (master->pass_type) {
514  case main_pass:
515  /* next pass is either output of scan 0 (after optimization)
516  * or output of scan 1 (if no optimization).
517  */
518  master->pass_type = output_pass;
519  if (! cinfo->optimize_coding)
520  master->scan_number++;
521  break;
522  case huff_opt_pass:
523  /* next pass is always output of current scan */
524  master->pass_type = output_pass;
525  break;
526  case output_pass:
527  /* next pass is either optimization or output of next scan */
528  if (cinfo->optimize_coding)
529  master->pass_type = huff_opt_pass;
530  master->scan_number++;
531  break;
532  }
533 
534  master->pass_number++;
535 }
536 
537 
538 /*
539  * Initialize master compression control.
540  */
541 
542 GLOBAL(void)
544 {
545  my_master_ptr master;
546 
547  master = (my_master_ptr)
548  (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
549  SIZEOF(my_comp_master));
550  cinfo->master = (struct jpeg_comp_master *) master;
551  master->pub.prepare_for_pass = prepare_for_pass;
552  master->pub.pass_startup = pass_startup;
553  master->pub.finish_pass = finish_pass_master;
554  master->pub.is_last_pass = FALSE;
555 
556  /* Validate parameters, determine derived values */
557  initial_setup(cinfo);
558 
559  if (cinfo->scan_info != NULL) {
560 #ifdef C_MULTISCAN_FILES_SUPPORTED
561  validate_script(cinfo);
562 #else
563  ERREXIT(cinfo, JERR_NOT_COMPILED);
564 #endif
565  } else {
566  cinfo->progressive_mode = FALSE;
567  cinfo->num_scans = 1;
568  }
569 
570  if (cinfo->progressive_mode) /* TEMPORARY HACK ??? */
571  cinfo->optimize_coding = TRUE; /* assume default tables no good for progressive mode */
572 
573  /* Initialize my private state */
574  if (transcode_only) {
575  /* no main pass in transcoding */
576  if (cinfo->optimize_coding)
577  master->pass_type = huff_opt_pass;
578  else
579  master->pass_type = output_pass;
580  } else {
581  /* for normal compression, first pass is always this type: */
582  master->pass_type = main_pass;
583  }
584  master->scan_number = 0;
585  master->pass_number = 0;
586  if (cinfo->optimize_coding)
587  master->total_passes = cinfo->num_scans * 2;
588  else
589  master->total_passes = cinfo->num_scans;
590 }
#define BITS_IN_JSAMPLE
Definition: jmorecfg.h:23
for(n=1;n< outline->n_points;n++)
Definition: ftbbox.c:593
int scan_number
Definition: jpeglib.h:989
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Definition: jpeglib.h:154
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Definition: jcmaster.c:38
#define NULL
Definition: ftobjs.h:61
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Definition: jpeglib.h:261
#define MAX_COMPONENTS
Definition: jmorecfg.h:35
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Definition: jcmaster.c:308
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Definition: jpegint.h:269
#define ERREXIT(cinfo, code)
Definition: jerror.h:205
#define SIZEOF(object)
Definition: jinclude.h:80
#define MAX_AH_AL
boolean component_needed
Definition: jpeglib.h:160
int comps_in_scan
Definition: jpeglib.h:185
jpeg_component_info * compptr
Definition: jdct.h:102
int component_index[MAX_COMPS_IN_SCAN]
Definition: jpeglib.h:186
JDIMENSION width_in_blocks
Definition: jpeglib.h:139
validate_script(j_compress_ptr cinfo)
Definition: jcmaster.c:130
#define JPOOL_IMAGE
Definition: jpeglib.h:749
c_pass_type
Definition: jcmaster.c:21
finish_pass_master(j_compress_ptr cinfo)
Definition: jcmaster.c:503
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Definition: jpeglib.h:140
#define JPEG_MAX_DIMENSION
Definition: jmorecfg.h:176
#define MAX(a, b)
Definition: jpegint.h:267
#define DCTSIZE2
Definition: jpeglib.h:42
#define LOCAL(type)
Definition: jmorecfg.h:189
#define C_MAX_BLOCKS_IN_MCU
Definition: jpeglib.h:55
typedef long(ZCALLBACK *tell_file_func) OF((voidpf opaque
jdiv_round_up(long a, long b)
Definition: jutils.c:72
initial_setup(j_compress_ptr cinfo)
Definition: jcmaster.c:46
#define MAX_SAMP_FACTOR
Definition: jpeglib.h:47
#define FALSE
Definition: ftobjs.h:57
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:208
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Definition: jcmaster.c:489
typedef int
Definition: png.h:978
#define GLOBAL(type)
Definition: jmorecfg.h:191
#define METHODDEF(type)
Definition: jmorecfg.h:187
#define DCTSIZE
Definition: jpeglib.h:41
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Definition: jcmaster.c:543
unsigned int JDIMENSION
Definition: jmorecfg.h:174
#define ERREXIT2(cinfo, code, p1, p2)
Definition: jerror.h:212
#define TRUE
Definition: ftobjs.h:53
prepare_for_pass(j_compress_ptr cinfo)
Definition: jcmaster.c:401
#define MAX_COMPS_IN_SCAN
Definition: jpeglib.h:46
select_scan_parameters(j_compress_ptr cinfo)
Definition: jcmaster.c:267
JDIMENSION downsampled_height
Definition: jpeglib.h:155
boolean transcode_only
Definition: jpegint.h:336