jcmarker.c
Go to the documentation of this file.
1 /*
2  * jcmarker.c
3  *
4  * Copyright (C) 1991-1998, 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 routines to write JPEG datastream markers.
9  */
10 
11 #define JPEG_INTERNALS
12 #include "jinclude.h"
13 #include "jpeglib.h"
14 
15 
16 typedef enum { /* JPEG marker codes */
17  M_SOF0 = 0xc0,
18  M_SOF1 = 0xc1,
19  M_SOF2 = 0xc2,
20  M_SOF3 = 0xc3,
21 
22  M_SOF5 = 0xc5,
23  M_SOF6 = 0xc6,
24  M_SOF7 = 0xc7,
25 
26  M_JPG = 0xc8,
27  M_SOF9 = 0xc9,
28  M_SOF10 = 0xca,
29  M_SOF11 = 0xcb,
30 
31  M_SOF13 = 0xcd,
32  M_SOF14 = 0xce,
33  M_SOF15 = 0xcf,
34 
35  M_DHT = 0xc4,
36 
37  M_DAC = 0xcc,
38 
39  M_RST0 = 0xd0,
40  M_RST1 = 0xd1,
41  M_RST2 = 0xd2,
42  M_RST3 = 0xd3,
43  M_RST4 = 0xd4,
44  M_RST5 = 0xd5,
45  M_RST6 = 0xd6,
46  M_RST7 = 0xd7,
47 
48  M_SOI = 0xd8,
49  M_EOI = 0xd9,
50  M_SOS = 0xda,
51  M_DQT = 0xdb,
52  M_DNL = 0xdc,
53  M_DRI = 0xdd,
54  M_DHP = 0xde,
55  M_EXP = 0xdf,
56 
57  M_APP0 = 0xe0,
58  M_APP1 = 0xe1,
59  M_APP2 = 0xe2,
60  M_APP3 = 0xe3,
61  M_APP4 = 0xe4,
62  M_APP5 = 0xe5,
63  M_APP6 = 0xe6,
64  M_APP7 = 0xe7,
65  M_APP8 = 0xe8,
66  M_APP9 = 0xe9,
67  M_APP10 = 0xea,
68  M_APP11 = 0xeb,
69  M_APP12 = 0xec,
70  M_APP13 = 0xed,
71  M_APP14 = 0xee,
72  M_APP15 = 0xef,
73 
74  M_JPG0 = 0xf0,
75  M_JPG13 = 0xfd,
76  M_COM = 0xfe,
77 
78  M_TEM = 0x01,
79 
80  M_ERROR = 0x100
81 } JPEG_MARKER;
82 
83 
84 /* Private state */
85 
86 typedef struct {
87  struct jpeg_marker_writer pub; /* public fields */
88 
89  unsigned int last_restart_interval; /* last DRI value emitted; 0 after SOI */
91 
93 
94 
95 /*
96  * Basic output routines.
97  *
98  * Note that we do not support suspension while writing a marker.
99  * Therefore, an application using suspension must ensure that there is
100  * enough buffer space for the initial markers (typ. 600-700 bytes) before
101  * calling jpeg_start_compress, and enough space to write the trailing EOI
102  * (a few bytes) before calling jpeg_finish_compress. Multipass compression
103  * modes are not supported at all with suspension, so those two are the only
104  * points where markers will be written.
105  */
106 
107 LOCAL(void)
109 /* Emit a byte */
110 {
111  struct jpeg_destination_mgr * dest = cinfo->dest;
112 
113  *(dest->next_output_byte)++ = (JOCTET) val;
114  if (--dest->free_in_buffer == 0) {
115  if (! (*dest->empty_output_buffer) (cinfo))
116  ERREXIT(cinfo, JERR_CANT_SUSPEND);
117  }
118 }
119 
120 
121 LOCAL(void)
123 /* Emit a marker code */
124 {
125  emit_byte(cinfo, 0xFF);
126  emit_byte(cinfo, (int) mark);
127 }
128 
129 
130 LOCAL(void)
132 /* Emit a 2-byte integer; these are always MSB first in JPEG files */
133 {
134  emit_byte(cinfo, (value >> 8) & 0xFF);
135  emit_byte(cinfo, value & 0xFF);
136 }
137 
138 
139 /*
140  * Routines to write specific marker types.
141  */
142 
143 LOCAL(int)
144 emit_dqt (j_compress_ptr cinfo, int index)
145 /* Emit a DQT marker */
146 /* Returns the precision used (0 = 8bits, 1 = 16bits) for baseline checking */
147 {
148  JQUANT_TBL * qtbl = cinfo->quant_tbl_ptrs[index];
149  int prec;
150  int i;
151 
152  if (qtbl == NULL)
153  ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, index);
154 
155  prec = 0;
156  for (i = 0; i < DCTSIZE2; i++) {
157  if (qtbl->quantval[i] > 255)
158  prec = 1;
159  }
160 
161  if (! qtbl->sent_table) {
162  emit_marker(cinfo, M_DQT);
163 
164  emit_2bytes(cinfo, prec ? DCTSIZE2*2 + 1 + 2 : DCTSIZE2 + 1 + 2);
165 
166  emit_byte(cinfo, index + (prec<<4));
167 
168  for (i = 0; i < DCTSIZE2; i++) {
169  /* The table entries must be emitted in zigzag order. */
170  unsigned int qval = qtbl->quantval[jpeg_natural_order[i]];
171  if (prec)
172  emit_byte(cinfo, (int) (qval >> 8));
173  emit_byte(cinfo, (int) (qval & 0xFF));
174  }
175 
176  qtbl->sent_table = TRUE;
177  }
178 
179  return prec;
180 }
181 
182 
183 LOCAL(void)
184 emit_dht (j_compress_ptr cinfo, int index, boolean is_ac)
185 /* Emit a DHT marker */
186 {
187  JHUFF_TBL * htbl;
188  int length, i;
189 
190  if (is_ac) {
191  htbl = cinfo->ac_huff_tbl_ptrs[index];
192  index += 0x10; /* output index has AC bit set */
193  } else {
194  htbl = cinfo->dc_huff_tbl_ptrs[index];
195  }
196 
197  if (htbl == NULL)
198  ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, index);
199 
200  if (! htbl->sent_table) {
201  emit_marker(cinfo, M_DHT);
202 
203  length = 0;
204  for (i = 1; i <= 16; i++)
205  length += htbl->bits[i];
206 
207  emit_2bytes(cinfo, length + 2 + 1 + 16);
208  emit_byte(cinfo, index);
209 
210  for (i = 1; i <= 16; i++)
211  emit_byte(cinfo, htbl->bits[i]);
212 
213  for (i = 0; i < length; i++)
214  emit_byte(cinfo, htbl->huffval[i]);
215 
216  htbl->sent_table = TRUE;
217  }
218 }
219 
220 
221 LOCAL(void)
223 /* Emit a DAC marker */
224 /* Since the useful info is so small, we want to emit all the tables in */
225 /* one DAC marker. Therefore this routine does its own scan of the table. */
226 {
227 #ifdef C_ARITH_CODING_SUPPORTED
228  char dc_in_use[NUM_ARITH_TBLS];
229  char ac_in_use[NUM_ARITH_TBLS];
230  int length, i;
232 
233  for (i = 0; i < NUM_ARITH_TBLS; i++)
234  dc_in_use[i] = ac_in_use[i] = 0;
235 
236  for (i = 0; i < cinfo->comps_in_scan; i++) {
237  compptr = cinfo->cur_comp_info[i];
238  dc_in_use[compptr->dc_tbl_no] = 1;
239  ac_in_use[compptr->ac_tbl_no] = 1;
240  }
241 
242  length = 0;
243  for (i = 0; i < NUM_ARITH_TBLS; i++)
244  length += dc_in_use[i] + ac_in_use[i];
245 
246  emit_marker(cinfo, M_DAC);
247 
248  emit_2bytes(cinfo, length*2 + 2);
249 
250  for (i = 0; i < NUM_ARITH_TBLS; i++) {
251  if (dc_in_use[i]) {
252  emit_byte(cinfo, i);
253  emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
254  }
255  if (ac_in_use[i]) {
256  emit_byte(cinfo, i + 0x10);
257  emit_byte(cinfo, cinfo->arith_ac_K[i]);
258  }
259  }
260 #endif /* C_ARITH_CODING_SUPPORTED */
261 }
262 
263 
264 LOCAL(void)
266 /* Emit a DRI marker */
267 {
268  emit_marker(cinfo, M_DRI);
269 
270  emit_2bytes(cinfo, 4); /* fixed length */
271 
272  emit_2bytes(cinfo, (int) cinfo->restart_interval);
273 }
274 
275 
276 LOCAL(void)
278 /* Emit a SOF marker */
279 {
280  int ci;
282 
283  emit_marker(cinfo, code);
284 
285  emit_2bytes(cinfo, 3 * cinfo->num_components + 2 + 5 + 1); /* length */
286 
287  /* Make sure image isn't bigger than SOF field can handle */
288  if ((long) cinfo->image_height > 65535L ||
289  (long) cinfo->image_width > 65535L)
290  ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) 65535);
291 
292  emit_byte(cinfo, cinfo->data_precision);
293  emit_2bytes(cinfo, (int) cinfo->image_height);
294  emit_2bytes(cinfo, (int) cinfo->image_width);
295 
296  emit_byte(cinfo, cinfo->num_components);
297 
298  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
299  ci++, compptr++) {
300  emit_byte(cinfo, compptr->component_id);
301  emit_byte(cinfo, (compptr->h_samp_factor << 4) + compptr->v_samp_factor);
302  emit_byte(cinfo, compptr->quant_tbl_no);
303  }
304 }
305 
306 
307 LOCAL(void)
309 /* Emit a SOS marker */
310 {
311  int i, td, ta;
313 
314  emit_marker(cinfo, M_SOS);
315 
316  emit_2bytes(cinfo, 2 * cinfo->comps_in_scan + 2 + 1 + 3); /* length */
317 
318  emit_byte(cinfo, cinfo->comps_in_scan);
319 
320  for (i = 0; i < cinfo->comps_in_scan; i++) {
321  compptr = cinfo->cur_comp_info[i];
322  emit_byte(cinfo, compptr->component_id);
323  td = compptr->dc_tbl_no;
324  ta = compptr->ac_tbl_no;
325  if (cinfo->progressive_mode) {
326  /* Progressive mode: only DC or only AC tables are used in one scan;
327  * furthermore, Huffman coding of DC refinement uses no table at all.
328  * We emit 0 for unused field(s); this is recommended by the P&M text
329  * but does not seem to be specified in the standard.
330  */
331  if (cinfo->Ss == 0) {
332  ta = 0; /* DC scan */
333  if (cinfo->Ah != 0 && !cinfo->arith_code)
334  td = 0; /* no DC table either */
335  } else {
336  td = 0; /* AC scan */
337  }
338  }
339  emit_byte(cinfo, (td << 4) + ta);
340  }
341 
342  emit_byte(cinfo, cinfo->Ss);
343  emit_byte(cinfo, cinfo->Se);
344  emit_byte(cinfo, (cinfo->Ah << 4) + cinfo->Al);
345 }
346 
347 
348 LOCAL(void)
350 /* Emit a JFIF-compliant APP0 marker */
351 {
352  /*
353  * Length of APP0 block (2 bytes)
354  * Block ID (4 bytes - ASCII "JFIF")
355  * Zero byte (1 byte to terminate the ID string)
356  * Version Major, Minor (2 bytes - major first)
357  * Units (1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm)
358  * Xdpu (2 bytes - dots per unit horizontal)
359  * Ydpu (2 bytes - dots per unit vertical)
360  * Thumbnail X size (1 byte)
361  * Thumbnail Y size (1 byte)
362  */
363 
364  emit_marker(cinfo, M_APP0);
365 
366  emit_2bytes(cinfo, 2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1); /* length */
367 
368  emit_byte(cinfo, 0x4A); /* Identifier: ASCII "JFIF" */
369  emit_byte(cinfo, 0x46);
370  emit_byte(cinfo, 0x49);
371  emit_byte(cinfo, 0x46);
372  emit_byte(cinfo, 0);
373  emit_byte(cinfo, cinfo->JFIF_major_version); /* Version fields */
374  emit_byte(cinfo, cinfo->JFIF_minor_version);
375  emit_byte(cinfo, cinfo->density_unit); /* Pixel size information */
376  emit_2bytes(cinfo, (int) cinfo->X_density);
377  emit_2bytes(cinfo, (int) cinfo->Y_density);
378  emit_byte(cinfo, 0); /* No thumbnail image */
379  emit_byte(cinfo, 0);
380 }
381 
382 
383 LOCAL(void)
385 /* Emit an Adobe APP14 marker */
386 {
387  /*
388  * Length of APP14 block (2 bytes)
389  * Block ID (5 bytes - ASCII "Adobe")
390  * Version Number (2 bytes - currently 100)
391  * Flags0 (2 bytes - currently 0)
392  * Flags1 (2 bytes - currently 0)
393  * Color transform (1 byte)
394  *
395  * Although Adobe TN 5116 mentions Version = 101, all the Adobe files
396  * now in circulation seem to use Version = 100, so that's what we write.
397  *
398  * We write the color transform byte as 1 if the JPEG color space is
399  * YCbCr, 2 if it's YCCK, 0 otherwise. Adobe's definition has to do with
400  * whether the encoder performed a transformation, which is pretty useless.
401  */
402 
403  emit_marker(cinfo, M_APP14);
404 
405  emit_2bytes(cinfo, 2 + 5 + 2 + 2 + 2 + 1); /* length */
406 
407  emit_byte(cinfo, 0x41); /* Identifier: ASCII "Adobe" */
408  emit_byte(cinfo, 0x64);
409  emit_byte(cinfo, 0x6F);
410  emit_byte(cinfo, 0x62);
411  emit_byte(cinfo, 0x65);
412  emit_2bytes(cinfo, 100); /* Version */
413  emit_2bytes(cinfo, 0); /* Flags0 */
414  emit_2bytes(cinfo, 0); /* Flags1 */
415  switch (cinfo->jpeg_color_space) {
416  case JCS_YCbCr:
417  emit_byte(cinfo, 1); /* Color transform = 1 */
418  break;
419  case JCS_YCCK:
420  emit_byte(cinfo, 2); /* Color transform = 2 */
421  break;
422  default:
423  emit_byte(cinfo, 0); /* Color transform = 0 */
424  break;
425  }
426 }
427 
428 
429 /*
430  * These routines allow writing an arbitrary marker with parameters.
431  * The only intended use is to emit COM or APPn markers after calling
432  * write_file_header and before calling write_frame_header.
433  * Other uses are not guaranteed to produce desirable results.
434  * Counting the parameter bytes properly is the caller's responsibility.
435  */
436 
437 METHODDEF(void)
439 /* Emit an arbitrary marker header */
440 {
441  if (datalen > (unsigned int) 65533) /* safety check */
442  ERREXIT(cinfo, JERR_BAD_LENGTH);
443 
444  emit_marker(cinfo, (JPEG_MARKER) marker);
445 
446  emit_2bytes(cinfo, (int) (datalen + 2)); /* total length */
447 }
448 
449 METHODDEF(void)
451 /* Emit one byte of marker parameters following write_marker_header */
452 {
453  emit_byte(cinfo, val);
454 }
455 
456 
457 /*
458  * Write datastream header.
459  * This consists of an SOI and optional APPn markers.
460  * We recommend use of the JFIF marker, but not the Adobe marker,
461  * when using YCbCr or grayscale data. The JFIF marker should NOT
462  * be used for any other JPEG colorspace. The Adobe marker is helpful
463  * to distinguish RGB, CMYK, and YCCK colorspaces.
464  * Note that an application can write additional header markers after
465  * jpeg_start_compress returns.
466  */
467 
468 METHODDEF(void)
470 {
471  my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
472 
473  emit_marker(cinfo, M_SOI); /* first the SOI */
474 
475  /* SOI is defined to reset restart interval to 0 */
476  marker->last_restart_interval = 0;
477 
478  if (cinfo->write_JFIF_header) /* next an optional JFIF APP0 */
479  emit_jfif_app0(cinfo);
480  if (cinfo->write_Adobe_marker) /* next an optional Adobe APP14 */
481  emit_adobe_app14(cinfo);
482 }
483 
484 
485 /*
486  * Write frame header.
487  * This consists of DQT and SOFn markers.
488  * Note that we do not emit the SOF until we have emitted the DQT(s).
489  * This avoids compatibility problems with incorrect implementations that
490  * try to error-check the quant table numbers as soon as they see the SOF.
491  */
492 
493 METHODDEF(void)
495 {
496  int ci, prec;
497  boolean is_baseline;
499 
500  /* Emit DQT for each quantization table.
501  * Note that emit_dqt() suppresses any duplicate tables.
502  */
503  prec = 0;
504  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
505  ci++, compptr++) {
506  prec += emit_dqt(cinfo, compptr->quant_tbl_no);
507  }
508  /* now prec is nonzero iff there are any 16-bit quant tables. */
509 
510  /* Check for a non-baseline specification.
511  * Note we assume that Huffman table numbers won't be changed later.
512  */
513  if (cinfo->arith_code || cinfo->progressive_mode ||
514  cinfo->data_precision != 8) {
515  is_baseline = FALSE;
516  } else {
517  is_baseline = TRUE;
518  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
519  ci++, compptr++) {
520  if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1)
521  is_baseline = FALSE;
522  }
523  if (prec && is_baseline) {
524  is_baseline = FALSE;
525  /* If it's baseline except for quantizer size, warn the user */
526  TRACEMS(cinfo, 0, JTRC_16BIT_TABLES);
527  }
528  }
529 
530  /* Emit the proper SOF marker */
531  if (cinfo->arith_code) {
532  emit_sof(cinfo, M_SOF9); /* SOF code for arithmetic coding */
533  } else {
534  if (cinfo->progressive_mode)
535  emit_sof(cinfo, M_SOF2); /* SOF code for progressive Huffman */
536  else if (is_baseline)
537  emit_sof(cinfo, M_SOF0); /* SOF code for baseline implementation */
538  else
539  emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */
540  }
541 }
542 
543 
544 /*
545  * Write scan header.
546  * This consists of DHT or DAC markers, optional DRI, and SOS.
547  * Compressed data will be written following the SOS.
548  */
549 
550 METHODDEF(void)
552 {
553  my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
554  int i;
555  jpeg_component_info *compptr;
556 
557  if (cinfo->arith_code) {
558  /* Emit arith conditioning info. We may have some duplication
559  * if the file has multiple scans, but it's so small it's hardly
560  * worth worrying about.
561  */
562  emit_dac(cinfo);
563  } else {
564  /* Emit Huffman tables.
565  * Note that emit_dht() suppresses any duplicate tables.
566  */
567  for (i = 0; i < cinfo->comps_in_scan; i++) {
568  compptr = cinfo->cur_comp_info[i];
569  if (cinfo->progressive_mode) {
570  /* Progressive mode: only DC or only AC tables are used in one scan */
571  if (cinfo->Ss == 0) {
572  if (cinfo->Ah == 0) /* DC needs no table for refinement scan */
573  emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
574  } else {
575  emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
576  }
577  } else {
578  /* Sequential mode: need both DC and AC tables */
579  emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
580  emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
581  }
582  }
583  }
584 
585  /* Emit DRI if required --- note that DRI value could change for each scan.
586  * We avoid wasting space with unnecessary DRIs, however.
587  */
588  if (cinfo->restart_interval != marker->last_restart_interval) {
589  emit_dri(cinfo);
590  marker->last_restart_interval = cinfo->restart_interval;
591  }
592 
593  emit_sos(cinfo);
594 }
595 
596 
597 /*
598  * Write datastream trailer.
599  */
600 
601 METHODDEF(void)
603 {
604  emit_marker(cinfo, M_EOI);
605 }
606 
607 
608 /*
609  * Write an abbreviated table-specification datastream.
610  * This consists of SOI, DQT and DHT tables, and EOI.
611  * Any table that is defined and not marked sent_table = TRUE will be
612  * emitted. Note that all tables will be marked sent_table = TRUE at exit.
613  */
614 
615 METHODDEF(void)
617 {
618  int i;
619 
620  emit_marker(cinfo, M_SOI);
621 
622  for (i = 0; i < NUM_QUANT_TBLS; i++) {
623  if (cinfo->quant_tbl_ptrs[i] != NULL)
624  (void) emit_dqt(cinfo, i);
625  }
626 
627  if (! cinfo->arith_code) {
628  for (i = 0; i < NUM_HUFF_TBLS; i++) {
629  if (cinfo->dc_huff_tbl_ptrs[i] != NULL)
630  emit_dht(cinfo, i, FALSE);
631  if (cinfo->ac_huff_tbl_ptrs[i] != NULL)
632  emit_dht(cinfo, i, TRUE);
633  }
634  }
635 
636  emit_marker(cinfo, M_EOI);
637 }
638 
639 
640 /*
641  * Initialize the marker writer module.
642  */
643 
644 GLOBAL(void)
646 {
648 
649  /* Create the subobject */
650  marker = (my_marker_ptr)
651  (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
653  cinfo->marker = (struct jpeg_marker_writer *) marker;
654  /* Initialize method pointers */
655  marker->pub.write_file_header = write_file_header;
656  marker->pub.write_frame_header = write_frame_header;
657  marker->pub.write_scan_header = write_scan_header;
658  marker->pub.write_file_trailer = write_file_trailer;
659  marker->pub.write_tables_only = write_tables_only;
660  marker->pub.write_marker_header = write_marker_header;
661  marker->pub.write_marker_byte = write_marker_byte;
662  /* Initialize private state */
663  marker->last_restart_interval = 0;
664 }
Definition: jcmarker.c:55
write_file_header(j_compress_ptr cinfo)
Definition: jcmarker.c:469
Definition: jcmarker.c:48
write_scan_header(j_compress_ptr cinfo)
Definition: jcmarker.c:551
#define NUM_QUANT_TBLS
Definition: jpeglib.h:43
#define FALSE
Definition: OPC_IceHook.h:9
emit_sos(j_compress_ptr cinfo)
Definition: jcmarker.c:308
UINT8 huffval[256]
Definition: jpeglib.h:104
const int jpeg_natural_order[]
Definition: jutils.c:53
struct jpeg_common_struct * j_common_ptr
Definition: jpeglib.h:261
UINT16 quantval[DCTSIZE2]
Definition: jpeglib.h:88
boolean sent_table
Definition: jpeglib.h:110
size_t free_in_buffer
Definition: jpeglib.h:715
#define NUM_HUFF_TBLS
Definition: jpeglib.h:44
png_voidp int value
Definition: png.h:2113
emit_jfif_app0(j_compress_ptr cinfo)
Definition: jcmarker.c:349
#define ERREXIT(cinfo, code)
Definition: jerror.h:205
Definition: jcmarker.c:50
#define TRUE
Definition: OPC_IceHook.h:13
#define SIZEOF(object)
Definition: jinclude.h:80
int const JOCTET unsigned int datalen
Definition: jpeglib.h:950
emit_byte(j_compress_ptr cinfo, int val)
Definition: jcmarker.c:108
Definition: jcmarker.c:35
write_file_trailer(j_compress_ptr cinfo)
Definition: jcmarker.c:602
unsigned int last_restart_interval
Definition: jcmarker.c:89
emit_dqt(j_compress_ptr cinfo, int index)
Definition: jcmarker.c:144
png_bytep png_bytep png_size_t length
Definition: png.h:1541
png_uint_32 i
Definition: png.h:2735
jpeg_component_info * compptr
Definition: jdct.h:102
write_marker_byte(j_compress_ptr cinfo, int val)
Definition: jcmarker.c:450
UINT8 bits[17]
Definition: jpeglib.h:102
#define TRACEMS(cinfo, lvl, code)
Definition: jerror.h:252
#define JPOOL_IMAGE
Definition: jpeglib.h:749
Definition: jcmarker.c:52
int marker
Definition: jpeglib.h:950
Definition: jcmarker.c:54
Definition: jcmarker.c:76
write_marker_header(j_compress_ptr cinfo, int marker, unsigned int datalen)
Definition: jcmarker.c:438
#define DCTSIZE2
Definition: jpeglib.h:42
#define LOCAL(type)
Definition: jmorecfg.h:186
emit_sof(j_compress_ptr cinfo, JPEG_MARKER code)
Definition: jcmarker.c:277
Definition: jcmarker.c:49
my_marker_writer * my_marker_ptr
Definition: jcmarker.c:92
emit_dri(j_compress_ptr cinfo)
Definition: jcmarker.c:265
list index
JPEG_MARKER
Definition: jcmarker.c:16
typedef void(PNGAPI *png_error_ptr) PNGARG((png_structp
int val
Definition: jpeglib.h:956
emit_adobe_app14(j_compress_ptr cinfo)
Definition: jcmarker.c:384
Definition: jcmarker.c:37
Definition: jcmarker.c:78
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:208
emit_dht(j_compress_ptr cinfo, int index, boolean is_ac)
Definition: jcmarker.c:184
write_tables_only(j_compress_ptr cinfo)
Definition: jcmarker.c:616
Definition: inftrees.h:24
#define GLOBAL(type)
Definition: jmorecfg.h:188
#define METHODDEF(type)
Definition: jmorecfg.h:184
boolean sent_table
Definition: jpeglib.h:94
write_frame_header(j_compress_ptr cinfo)
Definition: jcmarker.c:494
jinit_marker_writer(j_compress_ptr cinfo)
Definition: jcmarker.c:645
Definition: jcmarker.c:51
struct jpeg_marker_writer pub
Definition: jcmarker.c:87
#define NUM_ARITH_TBLS
Definition: jpeglib.h:45
JHUFF_TBL * htbl
Definition: jchuff.h:47
char JOCTET
Definition: jmorecfg.h:115
emit_marker(j_compress_ptr cinfo, JPEG_MARKER mark)
Definition: jcmarker.c:122
emit_dac(j_compress_ptr cinfo)
Definition: jcmarker.c:222
JOCTET * next_output_byte
Definition: jpeglib.h:714
Definition: jcmarker.c:53
Definition: jcmarker.c:26
emit_2bytes(j_compress_ptr cinfo, int value)
Definition: jcmarker.c:131


openhrp3
Author(s): AIST, General Robotix Inc., Nakamura Lab of Dept. of Mechano Informatics at University of Tokyo
autogenerated on Sat May 8 2021 02:42:39