1 #if !defined(_FX_JPEG_TURBO_)
2 /*
3 * jcmarker.c
4 *
5 * Copyright (C) 1991-1998, Thomas G. Lane.
6 * This file is part of the Independent JPEG Group's software.
7 * For conditions of distribution and use, see the accompanying README file.
8 *
9 * This file contains routines to write JPEG datastream markers.
10 */
11
12 #define JPEG_INTERNALS
13 #include "jinclude.h"
14 #include "jpeglib.h"
15
16
17 typedef enum { /* JPEG marker codes */
18 M_SOF0 = 0xc0,
19 M_SOF1 = 0xc1,
20 M_SOF2 = 0xc2,
21 M_SOF3 = 0xc3,
22
23 M_SOF5 = 0xc5,
24 M_SOF6 = 0xc6,
25 M_SOF7 = 0xc7,
26
27 M_JPG = 0xc8,
28 M_SOF9 = 0xc9,
29 M_SOF10 = 0xca,
30 M_SOF11 = 0xcb,
31
32 M_SOF13 = 0xcd,
33 M_SOF14 = 0xce,
34 M_SOF15 = 0xcf,
35
36 M_DHT = 0xc4,
37
38 M_DAC = 0xcc,
39
40 M_RST0 = 0xd0,
41 M_RST1 = 0xd1,
42 M_RST2 = 0xd2,
43 M_RST3 = 0xd3,
44 M_RST4 = 0xd4,
45 M_RST5 = 0xd5,
46 M_RST6 = 0xd6,
47 M_RST7 = 0xd7,
48
49 M_SOI = 0xd8,
50 M_EOI = 0xd9,
51 M_SOS = 0xda,
52 M_DQT = 0xdb,
53 M_DNL = 0xdc,
54 M_DRI = 0xdd,
55 M_DHP = 0xde,
56 M_EXP = 0xdf,
57
58 M_APP0 = 0xe0,
59 M_APP1 = 0xe1,
60 M_APP2 = 0xe2,
61 M_APP3 = 0xe3,
62 M_APP4 = 0xe4,
63 M_APP5 = 0xe5,
64 M_APP6 = 0xe6,
65 M_APP7 = 0xe7,
66 M_APP8 = 0xe8,
67 M_APP9 = 0xe9,
68 M_APP10 = 0xea,
69 M_APP11 = 0xeb,
70 M_APP12 = 0xec,
71 M_APP13 = 0xed,
72 M_APP14 = 0xee,
73 M_APP15 = 0xef,
74
75 M_JPG0 = 0xf0,
76 M_JPG13 = 0xfd,
77 M_COM = 0xfe,
78
79 M_TEM = 0x01,
80
81 M_ERROR = 0x100
82 } JPEG_MARKER;
83
84
85 /* Private state */
86
87 typedef struct {
88 struct jpeg_marker_writer pub; /* public fields */
89
90 unsigned int last_restart_interval; /* last DRI value emitted; 0 after SOI */
91 } my_marker_writer;
92
93 typedef my_marker_writer * my_marker_ptr;
94
95
96 /*
97 * Basic output routines.
98 *
99 * Note that we do not support suspension while writing a marker.
100 * Therefore, an application using suspension must ensure that there is
101 * enough buffer space for the initial markers (typ. 600-700 bytes) before
102 * calling jpeg_start_compress, and enough space to write the trailing EOI
103 * (a few bytes) before calling jpeg_finish_compress. Multipass compression
104 * modes are not supported at all with suspension, so those two are the only
105 * points where markers will be written.
106 */
107
108 LOCAL(void)
emit_byte(j_compress_ptr cinfo,int val)109 emit_byte (j_compress_ptr cinfo, int val)
110 /* Emit a byte */
111 {
112 struct jpeg_destination_mgr * dest = cinfo->dest;
113
114 *(dest->next_output_byte)++ = (JOCTET) val;
115 if (--dest->free_in_buffer == 0) {
116 if (! (*dest->empty_output_buffer) (cinfo))
117 ERREXIT(cinfo, JERR_CANT_SUSPEND);
118 }
119 }
120
121
122 LOCAL(void)
emit_marker(j_compress_ptr cinfo,JPEG_MARKER mark)123 emit_marker (j_compress_ptr cinfo, JPEG_MARKER mark)
124 /* Emit a marker code */
125 {
126 emit_byte(cinfo, 0xFF);
127 emit_byte(cinfo, (int) mark);
128 }
129
130
131 LOCAL(void)
emit_2bytes(j_compress_ptr cinfo,int value)132 emit_2bytes (j_compress_ptr cinfo, int value)
133 /* Emit a 2-byte integer; these are always MSB first in JPEG files */
134 {
135 emit_byte(cinfo, (value >> 8) & 0xFF);
136 emit_byte(cinfo, value & 0xFF);
137 }
138
139
140 /*
141 * Routines to write specific marker types.
142 */
143
144 LOCAL(int)
emit_dqt(j_compress_ptr cinfo,int index)145 emit_dqt (j_compress_ptr cinfo, int index)
146 /* Emit a DQT marker */
147 /* Returns the precision used (0 = 8bits, 1 = 16bits) for baseline checking */
148 {
149 JQUANT_TBL * qtbl = cinfo->quant_tbl_ptrs[index];
150 int prec;
151 int i;
152
153 if (qtbl == NULL)
154 ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, index);
155
156 prec = 0;
157 for (i = 0; i < DCTSIZE2; i++) {
158 if (qtbl->quantval[i] > 255)
159 prec = 1;
160 }
161
162 if (! qtbl->sent_table) {
163 emit_marker(cinfo, M_DQT);
164
165 emit_2bytes(cinfo, prec ? DCTSIZE2*2 + 1 + 2 : DCTSIZE2 + 1 + 2);
166
167 emit_byte(cinfo, index + (prec<<4));
168
169 for (i = 0; i < DCTSIZE2; i++) {
170 /* The table entries must be emitted in zigzag order. */
171 unsigned int qval = qtbl->quantval[jpeg_natural_order[i]];
172 if (prec)
173 emit_byte(cinfo, (int) (qval >> 8));
174 emit_byte(cinfo, (int) (qval & 0xFF));
175 }
176
177 qtbl->sent_table = TRUE;
178 }
179
180 return prec;
181 }
182
183
184 LOCAL(void)
emit_dht(j_compress_ptr cinfo,int index,boolean is_ac)185 emit_dht (j_compress_ptr cinfo, int index, boolean is_ac)
186 /* Emit a DHT marker */
187 {
188 JHUFF_TBL * htbl;
189 int length, i;
190
191 if (is_ac) {
192 htbl = cinfo->ac_huff_tbl_ptrs[index];
193 index += 0x10; /* output index has AC bit set */
194 } else {
195 htbl = cinfo->dc_huff_tbl_ptrs[index];
196 }
197
198 if (htbl == NULL)
199 ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, index);
200
201 if (! htbl->sent_table) {
202 emit_marker(cinfo, M_DHT);
203
204 length = 0;
205 for (i = 1; i <= 16; i++)
206 length += htbl->bits[i];
207
208 emit_2bytes(cinfo, length + 2 + 1 + 16);
209 emit_byte(cinfo, index);
210
211 for (i = 1; i <= 16; i++)
212 emit_byte(cinfo, htbl->bits[i]);
213
214 for (i = 0; i < length; i++)
215 emit_byte(cinfo, htbl->huffval[i]);
216
217 htbl->sent_table = TRUE;
218 }
219 }
220
221
222 LOCAL(void)
emit_dac(j_compress_ptr cinfo)223 emit_dac (j_compress_ptr cinfo)
224 /* Emit a DAC marker */
225 /* Since the useful info is so small, we want to emit all the tables in */
226 /* one DAC marker. Therefore this routine does its own scan of the table. */
227 {
228 #ifdef C_ARITH_CODING_SUPPORTED
229 char dc_in_use[NUM_ARITH_TBLS];
230 char ac_in_use[NUM_ARITH_TBLS];
231 int length, i;
232 jpeg_component_info *compptr;
233
234 for (i = 0; i < NUM_ARITH_TBLS; i++)
235 dc_in_use[i] = ac_in_use[i] = 0;
236
237 for (i = 0; i < cinfo->comps_in_scan; i++) {
238 compptr = cinfo->cur_comp_info[i];
239 dc_in_use[compptr->dc_tbl_no] = 1;
240 ac_in_use[compptr->ac_tbl_no] = 1;
241 }
242
243 length = 0;
244 for (i = 0; i < NUM_ARITH_TBLS; i++)
245 length += dc_in_use[i] + ac_in_use[i];
246
247 emit_marker(cinfo, M_DAC);
248
249 emit_2bytes(cinfo, length*2 + 2);
250
251 for (i = 0; i < NUM_ARITH_TBLS; i++) {
252 if (dc_in_use[i]) {
253 emit_byte(cinfo, i);
254 emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
255 }
256 if (ac_in_use[i]) {
257 emit_byte(cinfo, i + 0x10);
258 emit_byte(cinfo, cinfo->arith_ac_K[i]);
259 }
260 }
261 #endif /* C_ARITH_CODING_SUPPORTED */
262 }
263
264
265 LOCAL(void)
emit_dri(j_compress_ptr cinfo)266 emit_dri (j_compress_ptr cinfo)
267 /* Emit a DRI marker */
268 {
269 emit_marker(cinfo, M_DRI);
270
271 emit_2bytes(cinfo, 4); /* fixed length */
272
273 emit_2bytes(cinfo, (int) cinfo->restart_interval);
274 }
275
276
277 LOCAL(void)
emit_sof(j_compress_ptr cinfo,JPEG_MARKER code)278 emit_sof (j_compress_ptr cinfo, JPEG_MARKER code)
279 /* Emit a SOF marker */
280 {
281 int ci;
282 jpeg_component_info *compptr;
283
284 emit_marker(cinfo, code);
285
286 emit_2bytes(cinfo, 3 * cinfo->num_components + 2 + 5 + 1); /* length */
287
288 /* Make sure image isn't bigger than SOF field can handle */
289 if ((long) cinfo->image_height > 65535L ||
290 (long) cinfo->image_width > 65535L)
291 ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) 65535);
292
293 emit_byte(cinfo, cinfo->data_precision);
294 emit_2bytes(cinfo, (int) cinfo->image_height);
295 emit_2bytes(cinfo, (int) cinfo->image_width);
296
297 emit_byte(cinfo, cinfo->num_components);
298
299 for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
300 ci++, compptr++) {
301 emit_byte(cinfo, compptr->component_id);
302 emit_byte(cinfo, (compptr->h_samp_factor << 4) + compptr->v_samp_factor);
303 emit_byte(cinfo, compptr->quant_tbl_no);
304 }
305 }
306
307
308 LOCAL(void)
emit_sos(j_compress_ptr cinfo)309 emit_sos (j_compress_ptr cinfo)
310 /* Emit a SOS marker */
311 {
312 int i, td, ta;
313 jpeg_component_info *compptr;
314
315 emit_marker(cinfo, M_SOS);
316
317 emit_2bytes(cinfo, 2 * cinfo->comps_in_scan + 2 + 1 + 3); /* length */
318
319 emit_byte(cinfo, cinfo->comps_in_scan);
320
321 for (i = 0; i < cinfo->comps_in_scan; i++) {
322 compptr = cinfo->cur_comp_info[i];
323 emit_byte(cinfo, compptr->component_id);
324 td = compptr->dc_tbl_no;
325 ta = compptr->ac_tbl_no;
326 if (cinfo->progressive_mode) {
327 /* Progressive mode: only DC or only AC tables are used in one scan;
328 * furthermore, Huffman coding of DC refinement uses no table at all.
329 * We emit 0 for unused field(s); this is recommended by the P&M text
330 * but does not seem to be specified in the standard.
331 */
332 if (cinfo->Ss == 0) {
333 ta = 0; /* DC scan */
334 if (cinfo->Ah != 0 && !cinfo->arith_code)
335 td = 0; /* no DC table either */
336 } else {
337 td = 0; /* AC scan */
338 }
339 }
340 emit_byte(cinfo, (td << 4) + ta);
341 }
342
343 emit_byte(cinfo, cinfo->Ss);
344 emit_byte(cinfo, cinfo->Se);
345 emit_byte(cinfo, (cinfo->Ah << 4) + cinfo->Al);
346 }
347
348
349 LOCAL(void)
emit_jfif_app0(j_compress_ptr cinfo)350 emit_jfif_app0 (j_compress_ptr cinfo)
351 /* Emit a JFIF-compliant APP0 marker */
352 {
353 /*
354 * Length of APP0 block (2 bytes)
355 * Block ID (4 bytes - ASCII "JFIF")
356 * Zero byte (1 byte to terminate the ID string)
357 * Version Major, Minor (2 bytes - major first)
358 * Units (1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm)
359 * Xdpu (2 bytes - dots per unit horizontal)
360 * Ydpu (2 bytes - dots per unit vertical)
361 * Thumbnail X size (1 byte)
362 * Thumbnail Y size (1 byte)
363 */
364
365 emit_marker(cinfo, M_APP0);
366
367 emit_2bytes(cinfo, 2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1); /* length */
368
369 emit_byte(cinfo, 0x4A); /* Identifier: ASCII "JFIF" */
370 emit_byte(cinfo, 0x46);
371 emit_byte(cinfo, 0x49);
372 emit_byte(cinfo, 0x46);
373 emit_byte(cinfo, 0);
374 emit_byte(cinfo, cinfo->JFIF_major_version); /* Version fields */
375 emit_byte(cinfo, cinfo->JFIF_minor_version);
376 emit_byte(cinfo, cinfo->density_unit); /* Pixel size information */
377 emit_2bytes(cinfo, (int) cinfo->X_density);
378 emit_2bytes(cinfo, (int) cinfo->Y_density);
379 emit_byte(cinfo, 0); /* No thumbnail image */
380 emit_byte(cinfo, 0);
381 }
382
383
384 LOCAL(void)
emit_adobe_app14(j_compress_ptr cinfo)385 emit_adobe_app14 (j_compress_ptr cinfo)
386 /* Emit an Adobe APP14 marker */
387 {
388 /*
389 * Length of APP14 block (2 bytes)
390 * Block ID (5 bytes - ASCII "Adobe")
391 * Version Number (2 bytes - currently 100)
392 * Flags0 (2 bytes - currently 0)
393 * Flags1 (2 bytes - currently 0)
394 * Color transform (1 byte)
395 *
396 * Although Adobe TN 5116 mentions Version = 101, all the Adobe files
397 * now in circulation seem to use Version = 100, so that's what we write.
398 *
399 * We write the color transform byte as 1 if the JPEG color space is
400 * YCbCr, 2 if it's YCCK, 0 otherwise. Adobe's definition has to do with
401 * whether the encoder performed a transformation, which is pretty useless.
402 */
403
404 emit_marker(cinfo, M_APP14);
405
406 emit_2bytes(cinfo, 2 + 5 + 2 + 2 + 2 + 1); /* length */
407
408 emit_byte(cinfo, 0x41); /* Identifier: ASCII "Adobe" */
409 emit_byte(cinfo, 0x64);
410 emit_byte(cinfo, 0x6F);
411 emit_byte(cinfo, 0x62);
412 emit_byte(cinfo, 0x65);
413 emit_2bytes(cinfo, 100); /* Version */
414 emit_2bytes(cinfo, 0); /* Flags0 */
415 emit_2bytes(cinfo, 0); /* Flags1 */
416 switch (cinfo->jpeg_color_space) {
417 case JCS_YCbCr:
418 emit_byte(cinfo, 1); /* Color transform = 1 */
419 break;
420 case JCS_YCCK:
421 emit_byte(cinfo, 2); /* Color transform = 2 */
422 break;
423 default:
424 emit_byte(cinfo, 0); /* Color transform = 0 */
425 break;
426 }
427 }
428
429
430 /*
431 * These routines allow writing an arbitrary marker with parameters.
432 * The only intended use is to emit COM or APPn markers after calling
433 * write_file_header and before calling write_frame_header.
434 * Other uses are not guaranteed to produce desirable results.
435 * Counting the parameter bytes properly is the caller's responsibility.
436 */
437
438 METHODDEF(void)
write_marker_header(j_compress_ptr cinfo,int marker,unsigned int datalen)439 write_marker_header (j_compress_ptr cinfo, int marker, unsigned int datalen)
440 /* Emit an arbitrary marker header */
441 {
442 if (datalen > (unsigned int) 65533) /* safety check */
443 ERREXIT(cinfo, JERR_BAD_LENGTH);
444
445 emit_marker(cinfo, (JPEG_MARKER) marker);
446
447 emit_2bytes(cinfo, (int) (datalen + 2)); /* total length */
448 }
449
450 METHODDEF(void)
write_marker_byte(j_compress_ptr cinfo,int val)451 write_marker_byte (j_compress_ptr cinfo, int val)
452 /* Emit one byte of marker parameters following write_marker_header */
453 {
454 emit_byte(cinfo, val);
455 }
456
457
458 /*
459 * Write datastream header.
460 * This consists of an SOI and optional APPn markers.
461 * We recommend use of the JFIF marker, but not the Adobe marker,
462 * when using YCbCr or grayscale data. The JFIF marker should NOT
463 * be used for any other JPEG colorspace. The Adobe marker is helpful
464 * to distinguish RGB, CMYK, and YCCK colorspaces.
465 * Note that an application can write additional header markers after
466 * jpeg_start_compress returns.
467 */
468
469 METHODDEF(void)
write_file_header(j_compress_ptr cinfo)470 write_file_header (j_compress_ptr cinfo)
471 {
472 my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
473
474 emit_marker(cinfo, M_SOI); /* first the SOI */
475
476 /* SOI is defined to reset restart interval to 0 */
477 marker->last_restart_interval = 0;
478
479 if (cinfo->write_JFIF_header) /* next an optional JFIF APP0 */
480 emit_jfif_app0(cinfo);
481 if (cinfo->write_Adobe_marker) /* next an optional Adobe APP14 */
482 emit_adobe_app14(cinfo);
483 }
484
485
486 /*
487 * Write frame header.
488 * This consists of DQT and SOFn markers.
489 * Note that we do not emit the SOF until we have emitted the DQT(s).
490 * This avoids compatibility problems with incorrect implementations that
491 * try to error-check the quant table numbers as soon as they see the SOF.
492 */
493
494 METHODDEF(void)
write_frame_header(j_compress_ptr cinfo)495 write_frame_header (j_compress_ptr cinfo)
496 {
497 int ci, prec;
498 boolean is_baseline;
499 jpeg_component_info *compptr;
500
501 /* Emit DQT for each quantization table.
502 * Note that emit_dqt() suppresses any duplicate tables.
503 */
504 prec = 0;
505 for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
506 ci++, compptr++) {
507 prec += emit_dqt(cinfo, compptr->quant_tbl_no);
508 }
509 /* now prec is nonzero iff there are any 16-bit quant tables. */
510
511 /* Check for a non-baseline specification.
512 * Note we assume that Huffman table numbers won't be changed later.
513 */
514 if (cinfo->arith_code || cinfo->progressive_mode ||
515 cinfo->data_precision != 8) {
516 is_baseline = FALSE;
517 } else {
518 is_baseline = TRUE;
519 for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
520 ci++, compptr++) {
521 if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1)
522 is_baseline = FALSE;
523 }
524 if (prec && is_baseline) {
525 is_baseline = FALSE;
526 /* If it's baseline except for quantizer size, warn the user */
527 TRACEMS(cinfo, 0, JTRC_16BIT_TABLES);
528 }
529 }
530
531 /* Emit the proper SOF marker */
532 if (cinfo->arith_code) {
533 emit_sof(cinfo, M_SOF9); /* SOF code for arithmetic coding */
534 } else {
535 if (cinfo->progressive_mode)
536 emit_sof(cinfo, M_SOF2); /* SOF code for progressive Huffman */
537 else if (is_baseline)
538 emit_sof(cinfo, M_SOF0); /* SOF code for baseline implementation */
539 else
540 emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */
541 }
542 }
543
544
545 /*
546 * Write scan header.
547 * This consists of DHT or DAC markers, optional DRI, and SOS.
548 * Compressed data will be written following the SOS.
549 */
550
551 METHODDEF(void)
write_scan_header(j_compress_ptr cinfo)552 write_scan_header (j_compress_ptr cinfo)
553 {
554 my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
555 int i;
556 jpeg_component_info *compptr;
557
558 if (cinfo->arith_code) {
559 /* Emit arith conditioning info. We may have some duplication
560 * if the file has multiple scans, but it's so small it's hardly
561 * worth worrying about.
562 */
563 emit_dac(cinfo);
564 } else {
565 /* Emit Huffman tables.
566 * Note that emit_dht() suppresses any duplicate tables.
567 */
568 for (i = 0; i < cinfo->comps_in_scan; i++) {
569 compptr = cinfo->cur_comp_info[i];
570 if (cinfo->progressive_mode) {
571 /* Progressive mode: only DC or only AC tables are used in one scan */
572 if (cinfo->Ss == 0) {
573 if (cinfo->Ah == 0) /* DC needs no table for refinement scan */
574 emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
575 } else {
576 emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
577 }
578 } else {
579 /* Sequential mode: need both DC and AC tables */
580 emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
581 emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
582 }
583 }
584 }
585
586 /* Emit DRI if required --- note that DRI value could change for each scan.
587 * We avoid wasting space with unnecessary DRIs, however.
588 */
589 if (cinfo->restart_interval != marker->last_restart_interval) {
590 emit_dri(cinfo);
591 marker->last_restart_interval = cinfo->restart_interval;
592 }
593
594 emit_sos(cinfo);
595 }
596
597
598 /*
599 * Write datastream trailer.
600 */
601
602 METHODDEF(void)
write_file_trailer(j_compress_ptr cinfo)603 write_file_trailer (j_compress_ptr cinfo)
604 {
605 emit_marker(cinfo, M_EOI);
606 }
607
608
609 /*
610 * Write an abbreviated table-specification datastream.
611 * This consists of SOI, DQT and DHT tables, and EOI.
612 * Any table that is defined and not marked sent_table = TRUE will be
613 * emitted. Note that all tables will be marked sent_table = TRUE at exit.
614 */
615
616 METHODDEF(void)
write_tables_only(j_compress_ptr cinfo)617 write_tables_only (j_compress_ptr cinfo)
618 {
619 int i;
620
621 emit_marker(cinfo, M_SOI);
622
623 for (i = 0; i < NUM_QUANT_TBLS; i++) {
624 if (cinfo->quant_tbl_ptrs[i] != NULL)
625 (void) emit_dqt(cinfo, i);
626 }
627
628 if (! cinfo->arith_code) {
629 for (i = 0; i < NUM_HUFF_TBLS; i++) {
630 if (cinfo->dc_huff_tbl_ptrs[i] != NULL)
631 emit_dht(cinfo, i, FALSE);
632 if (cinfo->ac_huff_tbl_ptrs[i] != NULL)
633 emit_dht(cinfo, i, TRUE);
634 }
635 }
636
637 emit_marker(cinfo, M_EOI);
638 }
639
640
641 /*
642 * Initialize the marker writer module.
643 */
644
645 GLOBAL(void)
jinit_marker_writer(j_compress_ptr cinfo)646 jinit_marker_writer (j_compress_ptr cinfo)
647 {
648 my_marker_ptr marker;
649
650 /* Create the subobject */
651 marker = (my_marker_ptr)
652 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
653 SIZEOF(my_marker_writer));
654 cinfo->marker = (struct jpeg_marker_writer *) marker;
655 /* Initialize method pointers */
656 marker->pub.write_file_header = write_file_header;
657 marker->pub.write_frame_header = write_frame_header;
658 marker->pub.write_scan_header = write_scan_header;
659 marker->pub.write_file_trailer = write_file_trailer;
660 marker->pub.write_tables_only = write_tables_only;
661 marker->pub.write_marker_header = write_marker_header;
662 marker->pub.write_marker_byte = write_marker_byte;
663 /* Initialize private state */
664 marker->last_restart_interval = 0;
665 }
666
667 #endif //_FX_JPEG_TURBO_
668