Line data Source code
1 : /* WARNING: The type of JPEG encapsulation defined by the TIFF Version 6.0
2 : specification is now totally obsolete and deprecated for new applications and
3 : images. This file was was created solely in order to read unconverted images
4 : still present on some users' computer systems. It will never be extended
5 : to write such files. Writing new-style JPEG compressed TIFFs is implemented
6 : in tif_jpeg.c.
7 :
8 : The code is carefully crafted to robustly read all gathered JPEG-in-TIFF
9 : testfiles, and anticipate as much as possible all other... But still, it may
10 : fail on some. If you encounter problems, please report them on the TIFF
11 : mailing list and/or to Joris Van Damme <info@awaresystems.be>.
12 :
13 : Please read the file called "TIFF Technical Note #2" if you need to be
14 : convinced this compression scheme is bad and breaks TIFF. That document
15 : is linked to from the LibTiff site <http://www.remotesensing.org/libtiff/>
16 : and from AWare Systems' TIFF section
17 : <http://www.awaresystems.be/imaging/tiff.html>. It is also absorbed
18 : in Adobe's specification supplements, marked "draft" up to this day, but
19 : supported by the TIFF community.
20 :
21 : This file interfaces with Release 6B of the JPEG Library written by the
22 : Independent JPEG Group. Previous versions of this file required a hack inside
23 : the LibJpeg library. This version no longer requires that. Remember to
24 : remove the hack if you update from the old version.
25 :
26 : Copyright (c) Joris Van Damme <info@awaresystems.be>
27 : Copyright (c) AWare Systems <http://www.awaresystems.be/>
28 :
29 : The licence agreement for this file is the same as the rest of the LibTiff
30 : library.
31 :
32 : IN NO EVENT SHALL JORIS VAN DAMME OR AWARE SYSTEMS BE LIABLE FOR
33 : ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
34 : OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
35 : WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
36 : LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
37 : OF THIS SOFTWARE.
38 :
39 : Joris Van Damme and/or AWare Systems may be available for custom
40 : development. If you like what you see, and need anything similar or related,
41 : contact <info@awaresystems.be>.
42 : */
43 :
44 : /* What is what, and what is not?
45 :
46 : This decoder starts with an input stream, that is essentially the
47 : JpegInterchangeFormat stream, if any, followed by the strile data, if any.
48 : This stream is read in OJPEGReadByte and related functions.
49 :
50 : It analyzes the start of this stream, until it encounters non-marker data,
51 : i.e. compressed image data. Some of the header markers it sees have no actual
52 : content, like the SOI marker, and APP/COM markers that really shouldn't even
53 : be there. Some other markers do have content, and the valuable bits and
54 : pieces of information in these markers are saved, checking all to verify that
55 : the stream is more or less within expected bounds. This happens inside the
56 : OJPEGReadHeaderInfoSecStreamXxx functions.
57 :
58 : Some OJPEG imagery contains no valid JPEG header markers. This situation is
59 : picked up on if we've seen no SOF marker when we're at the start of the
60 : compressed image data. In this case, the tables are read from JpegXxxTables
61 : tags, and the other bits and pieces of information is initialized to its most
62 : basic value. This is implemented in the OJPEGReadHeaderInfoSecTablesXxx
63 : functions.
64 :
65 : When this is complete, a good and valid JPEG header can be assembled, and
66 : this is passed through to LibJpeg. When that's done, the remainder of the
67 : input stream, i.e. the compressed image data, can be passed through
68 : unchanged. This is done in OJPEGWriteStream functions.
69 :
70 : LibTiff rightly expects to know the subsampling values before decompression.
71 : Just like in new-style JPEG-in-TIFF, though, or even more so, actually, the
72 : YCbCrsubsampling tag is notoriously unreliable. To correct these tag values
73 : with the ones inside the JPEG stream, the first part of the input stream is
74 : pre-scanned in OJPEGSubsamplingCorrect, making no note of any other data,
75 : reporting no warnings or errors, up to the point where either these values
76 : are read, or it's clear they aren't there. This means that some of the data
77 : is read twice, but we feel speed in correcting these values is important
78 : enough to warrant this sacrifice. Although there is currently no define or
79 : other configuration mechanism to disable this behavior, the actual header
80 : scanning is build to robustly respond with error report if it should
81 : encounter an uncorrected mismatch of subsampling values. See
82 : OJPEGReadHeaderInfoSecStreamSof.
83 :
84 : The restart interval and restart markers are the most tricky part... The
85 : restart interval can be specified in a tag. It can also be set inside the
86 : input JPEG stream. It can be used inside the input JPEG stream. If reading
87 : from strile data, we've consistently discovered the need to insert restart
88 : markers in between the different striles, as is also probably the most likely
89 : interpretation of the original TIFF 6.0 specification. With all this setting
90 : of interval, and actual use of markers that is not predictable at the time of
91 : valid JPEG header assembly, the restart thing may turn out the Achilles heel
92 : of this implementation. Fortunately, most OJPEG writer vendors succeed in
93 : reading back what they write, which may be the reason why we've been able to
94 : discover ways that seem to work.
95 :
96 : Some special provision is made for planarconfig separate OJPEG files. These
97 : seem to consistently contain header info, a SOS marker, a plane, SOS marker,
98 : plane, SOS, and plane. This may or may not be a valid JPEG configuration, we
99 : don't know and don't care. We want LibTiff to be able to access the planes
100 : individually, without huge buffering inside LibJpeg, anyway. So we compose
101 : headers to feed to LibJpeg, in this case, that allow us to pass a single
102 : plane such that LibJpeg sees a valid single-channel JPEG stream. Locating
103 : subsequent SOS markers, and thus subsequent planes, is done inside
104 : OJPEGReadSecondarySos.
105 :
106 : The benefit of the scheme is... that it works, basically. We know of no other
107 : that does. It works without checking software tag, or otherwise going about
108 : things in an OJPEG flavor specific manner. Instead, it is a single scheme,
109 : that covers the cases with and without JpegInterchangeFormat, with and
110 : without striles, with part of the header in JpegInterchangeFormat and
111 : remainder in first strile, etc. It is forgiving and robust, may likely work
112 : with OJPEG flavors we've not seen yet, and makes most out of the data.
113 :
114 : Another nice side-effect is that a complete JPEG single valid stream is build
115 : if planarconfig is not separate (vast majority). We may one day use that to
116 : build converters to JPEG, and/or to new-style JPEG compression inside TIFF.
117 :
118 : A disadvantage is the lack of random access to the individual striles. This
119 : is the reason for much of the complicated restart-and-position stuff inside
120 : OJPEGPreDecode. Applications would do well accessing all striles in order, as
121 : this will result in a single sequential scan of the input stream, and no
122 : restarting of LibJpeg decoding session.
123 : */
124 :
125 : #define WIN32_LEAN_AND_MEAN
126 : #define VC_EXTRALEAN
127 :
128 : #include "tiffiop.h"
129 : #ifdef OJPEG_SUPPORT
130 :
131 : /* Configuration defines here are:
132 : * JPEG_ENCAP_EXTERNAL: The normal way to call libjpeg, uses longjump. In some
133 : * environments, like eg LibTiffDelphi, this is not possible. For this reason,
134 : * the actual calls to libjpeg, with longjump stuff, are encapsulated in
135 : * dedicated functions. When JPEG_ENCAP_EXTERNAL is defined, these encapsulating
136 : * functions are declared external to this unit, and can be defined elsewhere to
137 : * use stuff other then longjump. The default mode, without JPEG_ENCAP_EXTERNAL,
138 : * implements the call encapsulators here, internally, with normal longjump.
139 : * SETJMP, LONGJMP, JMP_BUF: On some machines/environments a longjump equivalent
140 : * is conveniently available, but still it may be worthwhile to use _setjmp or
141 : * sigsetjmp in place of plain setjmp. These macros will make it easier. It is
142 : * useless to fiddle with these if you define JPEG_ENCAP_EXTERNAL. OJPEG_BUFFER:
143 : * Define the size of the desired buffer here. Should be small enough so as to
144 : * guarantee instant processing, optimal streaming and optimal use of processor
145 : * cache, but also big enough so as to not result in significant call overhead.
146 : * It should be at least a few bytes to accommodate some structures (this is
147 : * verified in asserts), but it would not be sensible to make it this small
148 : * anyway, and it should be at most 64K since it is indexed with uint16_t. We
149 : * recommend 2K. EGYPTIANWALK: You could also define EGYPTIANWALK here, but it
150 : * is not used anywhere and has absolutely no effect. That is why most people
151 : * insist the EGYPTIANWALK is a bit silly.
152 : */
153 :
154 : /* define LIBJPEG_ENCAP_EXTERNAL */
155 : #define SETJMP(jbuf) setjmp(jbuf)
156 : #define LONGJMP(jbuf, code) longjmp(jbuf, code)
157 : #define JMP_BUF jmp_buf
158 : #define OJPEG_BUFFER 2048
159 : /* define EGYPTIANWALK */
160 :
161 : #define JPEG_MARKER_SOF0 0xC0
162 : #define JPEG_MARKER_SOF1 0xC1
163 : #define JPEG_MARKER_SOF3 0xC3
164 : #define JPEG_MARKER_DHT 0xC4
165 : #define JPEG_MARKER_RST0 0XD0
166 : #define JPEG_MARKER_SOI 0xD8
167 : #define JPEG_MARKER_EOI 0xD9
168 : #define JPEG_MARKER_SOS 0xDA
169 : #define JPEG_MARKER_DQT 0xDB
170 : #define JPEG_MARKER_DRI 0xDD
171 : #define JPEG_MARKER_APP0 0xE0
172 : #define JPEG_MARKER_COM 0xFE
173 :
174 : #define FIELD_OJPEG_JPEGINTERCHANGEFORMAT (FIELD_CODEC + 0)
175 : #define FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH (FIELD_CODEC + 1)
176 : #define FIELD_OJPEG_JPEGQTABLES (FIELD_CODEC + 2)
177 : #define FIELD_OJPEG_JPEGDCTABLES (FIELD_CODEC + 3)
178 : #define FIELD_OJPEG_JPEGACTABLES (FIELD_CODEC + 4)
179 : #define FIELD_OJPEG_JPEGPROC (FIELD_CODEC + 5)
180 : #define FIELD_OJPEG_JPEGRESTARTINTERVAL (FIELD_CODEC + 6)
181 :
182 : static const TIFFField ojpegFields[] = {
183 : {TIFFTAG_JPEGIFOFFSET, 1, 1, TIFF_LONG8, 0, TIFF_SETGET_UINT64,
184 : FIELD_OJPEG_JPEGINTERCHANGEFORMAT, TRUE, FALSE, "JpegInterchangeFormat",
185 : NULL},
186 : {TIFFTAG_JPEGIFBYTECOUNT, 1, 1, TIFF_LONG8, 0, TIFF_SETGET_UINT64,
187 : FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH, TRUE, FALSE,
188 : "JpegInterchangeFormatLength", NULL},
189 : {TIFFTAG_JPEGQTABLES, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG8, 0,
190 : TIFF_SETGET_C32_UINT64, FIELD_OJPEG_JPEGQTABLES, FALSE, TRUE,
191 : "JpegQTables", NULL},
192 : {TIFFTAG_JPEGDCTABLES, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG8, 0,
193 : TIFF_SETGET_C32_UINT64, FIELD_OJPEG_JPEGDCTABLES, FALSE, TRUE,
194 : "JpegDcTables", NULL},
195 : {TIFFTAG_JPEGACTABLES, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG8, 0,
196 : TIFF_SETGET_C32_UINT64, FIELD_OJPEG_JPEGACTABLES, FALSE, TRUE,
197 : "JpegAcTables", NULL},
198 : {TIFFTAG_JPEGPROC, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16,
199 : FIELD_OJPEG_JPEGPROC, FALSE, FALSE, "JpegProc", NULL},
200 : {TIFFTAG_JPEGRESTARTINTERVAL, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16,
201 : FIELD_OJPEG_JPEGRESTARTINTERVAL, FALSE, FALSE, "JpegRestartInterval",
202 : NULL},
203 : };
204 :
205 : #ifndef LIBJPEG_ENCAP_EXTERNAL
206 : #include <setjmp.h>
207 : #endif
208 :
209 : #include "jerror.h"
210 : #include "jpeglib.h"
211 :
212 : #ifndef TIFF_jpeg_source_mgr_defined
213 : #define TIFF_jpeg_source_mgr_defined
214 : typedef struct jpeg_source_mgr jpeg_source_mgr;
215 : #endif
216 :
217 : #ifndef TIFF_jpeg_error_mgr_defined
218 : #define TIFF_jpeg_error_mgr_defined
219 : typedef struct jpeg_error_mgr jpeg_error_mgr;
220 : #endif
221 :
222 : typedef struct jpeg_common_struct jpeg_common_struct;
223 : typedef struct jpeg_decompress_struct jpeg_decompress_struct;
224 :
225 : typedef enum
226 : {
227 : osibsNotSetYet,
228 : osibsJpegInterchangeFormat,
229 : osibsStrile,
230 : osibsEof
231 : } OJPEGStateInBufferSource;
232 :
233 : typedef enum
234 : {
235 : ososSoi,
236 : ososQTable0,
237 : ososQTable1,
238 : ososQTable2,
239 : ososQTable3,
240 : ososDcTable0,
241 : ososDcTable1,
242 : ososDcTable2,
243 : ososDcTable3,
244 : ososAcTable0,
245 : ososAcTable1,
246 : ososAcTable2,
247 : ososAcTable3,
248 : ososDri,
249 : ososSof,
250 : ososSos,
251 : ososCompressed,
252 : ososRst,
253 : ososEoi
254 : } OJPEGStateOutState;
255 :
256 : typedef struct
257 : {
258 : TIFF *tif;
259 : int decoder_ok;
260 : int error_in_raw_data_decoding;
261 : #ifndef LIBJPEG_ENCAP_EXTERNAL
262 : JMP_BUF exit_jmpbuf;
263 : #endif
264 : TIFFVGetMethod vgetparent;
265 : TIFFVSetMethod vsetparent;
266 : TIFFPrintMethod printdir;
267 : uint64_t file_size;
268 : uint32_t image_width;
269 : uint32_t image_length;
270 : uint32_t strile_width;
271 : uint32_t strile_length;
272 : uint32_t strile_length_total;
273 : uint8_t samples_per_pixel;
274 : uint8_t plane_sample_offset;
275 : uint8_t samples_per_pixel_per_plane;
276 : uint64_t jpeg_interchange_format;
277 : uint64_t jpeg_interchange_format_length;
278 : uint8_t jpeg_proc;
279 : uint8_t subsamplingcorrect;
280 : uint8_t subsamplingcorrect_done;
281 : uint8_t subsampling_tag;
282 : uint8_t subsampling_hor;
283 : uint8_t subsampling_ver;
284 : uint8_t subsampling_force_desubsampling_inside_decompression;
285 : uint8_t qtable_offset_count;
286 : uint8_t dctable_offset_count;
287 : uint8_t actable_offset_count;
288 : uint64_t qtable_offset[3];
289 : uint64_t dctable_offset[3];
290 : uint64_t actable_offset[3];
291 : uint8_t *qtable[4];
292 : uint8_t *dctable[4];
293 : uint8_t *actable[4];
294 : uint16_t restart_interval;
295 : uint8_t restart_index;
296 : uint8_t sof_log;
297 : uint8_t sof_marker_id;
298 : uint32_t sof_x;
299 : uint32_t sof_y;
300 : uint8_t sof_c[3];
301 : uint8_t sof_hv[3];
302 : uint8_t sof_tq[3];
303 : uint8_t sos_cs[3];
304 : uint8_t sos_tda[3];
305 : struct
306 : {
307 : uint8_t log;
308 : OJPEGStateInBufferSource in_buffer_source;
309 : uint32_t in_buffer_next_strile;
310 : uint64_t in_buffer_file_pos;
311 : uint64_t in_buffer_file_togo;
312 : } sos_end[3];
313 : uint8_t readheader_done;
314 : uint8_t writeheader_done;
315 : uint16_t write_cursample;
316 : uint32_t write_curstrile;
317 : uint8_t libjpeg_session_active;
318 : uint8_t libjpeg_jpeg_query_style;
319 : jpeg_error_mgr libjpeg_jpeg_error_mgr;
320 : jpeg_decompress_struct libjpeg_jpeg_decompress_struct;
321 : jpeg_source_mgr libjpeg_jpeg_source_mgr;
322 : uint8_t subsampling_convert_log;
323 : uint32_t subsampling_convert_ylinelen;
324 : uint32_t subsampling_convert_ylines;
325 : uint32_t subsampling_convert_clinelen;
326 : uint32_t subsampling_convert_clines;
327 : uint32_t subsampling_convert_ybuflen;
328 : uint32_t subsampling_convert_cbuflen;
329 : uint32_t subsampling_convert_ycbcrbuflen;
330 : uint8_t *subsampling_convert_ycbcrbuf;
331 : uint8_t *subsampling_convert_ybuf;
332 : uint8_t *subsampling_convert_cbbuf;
333 : uint8_t *subsampling_convert_crbuf;
334 : uint32_t subsampling_convert_ycbcrimagelen;
335 : uint8_t **subsampling_convert_ycbcrimage;
336 : uint32_t subsampling_convert_clinelenout;
337 : uint32_t subsampling_convert_state;
338 : uint32_t bytes_per_line; /* if the codec outputs subsampled data, a 'line'
339 : in bytes_per_line */
340 : uint32_t lines_per_strile; /* and lines_per_strile means subsampling_ver
341 : desubsampled rows */
342 : OJPEGStateInBufferSource in_buffer_source;
343 : uint32_t in_buffer_next_strile;
344 : uint32_t in_buffer_strile_count;
345 : uint64_t in_buffer_file_pos;
346 : uint8_t in_buffer_file_pos_log;
347 : uint64_t in_buffer_file_togo;
348 : uint16_t in_buffer_togo;
349 : uint8_t *in_buffer_cur;
350 : uint8_t in_buffer[OJPEG_BUFFER];
351 : OJPEGStateOutState out_state;
352 : uint8_t out_buffer[OJPEG_BUFFER];
353 : uint8_t *skip_buffer;
354 : } OJPEGState;
355 :
356 : static int OJPEGVGetField(TIFF *tif, uint32_t tag, va_list ap);
357 : static int OJPEGVSetField(TIFF *tif, uint32_t tag, va_list ap);
358 : static void OJPEGPrintDir(TIFF *tif, FILE *fd, long flags);
359 :
360 : static int OJPEGFixupTags(TIFF *tif);
361 : static int OJPEGSetupDecode(TIFF *tif);
362 : static int OJPEGPreDecode(TIFF *tif, uint16_t s);
363 : static int OJPEGPreDecodeSkipRaw(TIFF *tif);
364 : static int OJPEGPreDecodeSkipScanlines(TIFF *tif);
365 : static int OJPEGDecode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s);
366 : static int OJPEGDecodeRaw(TIFF *tif, uint8_t *buf, tmsize_t cc);
367 : static int OJPEGDecodeScanlines(TIFF *tif, uint8_t *buf, tmsize_t cc);
368 : static void OJPEGPostDecode(TIFF *tif, uint8_t *buf, tmsize_t cc);
369 : static int OJPEGSetupEncode(TIFF *tif);
370 : static int OJPEGPreEncode(TIFF *tif, uint16_t s);
371 : static int OJPEGEncode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s);
372 : static int OJPEGPostEncode(TIFF *tif);
373 : static void OJPEGCleanup(TIFF *tif);
374 :
375 : static void OJPEGSubsamplingCorrect(TIFF *tif);
376 : static int OJPEGReadHeaderInfo(TIFF *tif);
377 : static int OJPEGReadSecondarySos(TIFF *tif, uint16_t s);
378 : static int OJPEGWriteHeaderInfo(TIFF *tif);
379 : static void OJPEGLibjpegSessionAbort(TIFF *tif);
380 :
381 : static int OJPEGReadHeaderInfoSec(TIFF *tif);
382 : static int OJPEGReadHeaderInfoSecStreamDri(TIFF *tif);
383 : static int OJPEGReadHeaderInfoSecStreamDqt(TIFF *tif);
384 : static int OJPEGReadHeaderInfoSecStreamDht(TIFF *tif);
385 : static int OJPEGReadHeaderInfoSecStreamSof(TIFF *tif, uint8_t marker_id);
386 : static int OJPEGReadHeaderInfoSecStreamSos(TIFF *tif);
387 : static int OJPEGReadHeaderInfoSecTablesQTable(TIFF *tif);
388 : static int OJPEGReadHeaderInfoSecTablesDcTable(TIFF *tif);
389 : static int OJPEGReadHeaderInfoSecTablesAcTable(TIFF *tif);
390 :
391 : static int OJPEGReadBufferFill(OJPEGState *sp);
392 : static int OJPEGReadByte(OJPEGState *sp, uint8_t *byte);
393 : static int OJPEGReadBytePeek(OJPEGState *sp, uint8_t *byte);
394 : static void OJPEGReadByteAdvance(OJPEGState *sp);
395 : static int OJPEGReadWord(OJPEGState *sp, uint16_t *word);
396 : static int OJPEGReadBlock(OJPEGState *sp, uint16_t len, void *mem);
397 : static void OJPEGReadSkip(OJPEGState *sp, uint16_t len);
398 :
399 : static int OJPEGWriteStream(TIFF *tif, void **mem, uint32_t *len);
400 : static void OJPEGWriteStreamSoi(TIFF *tif, void **mem, uint32_t *len);
401 : static void OJPEGWriteStreamQTable(TIFF *tif, uint8_t table_index, void **mem,
402 : uint32_t *len);
403 : static void OJPEGWriteStreamDcTable(TIFF *tif, uint8_t table_index, void **mem,
404 : uint32_t *len);
405 : static void OJPEGWriteStreamAcTable(TIFF *tif, uint8_t table_index, void **mem,
406 : uint32_t *len);
407 : static void OJPEGWriteStreamDri(TIFF *tif, void **mem, uint32_t *len);
408 : static void OJPEGWriteStreamSof(TIFF *tif, void **mem, uint32_t *len);
409 : static void OJPEGWriteStreamSos(TIFF *tif, void **mem, uint32_t *len);
410 : static int OJPEGWriteStreamCompressed(TIFF *tif, void **mem, uint32_t *len);
411 : static void OJPEGWriteStreamRst(TIFF *tif, void **mem, uint32_t *len);
412 : static void OJPEGWriteStreamEoi(TIFF *tif, void **mem, uint32_t *len);
413 :
414 : #ifdef LIBJPEG_ENCAP_EXTERNAL
415 : extern int jpeg_create_decompress_encap(OJPEGState *sp,
416 : jpeg_decompress_struct *cinfo);
417 : extern int jpeg_read_header_encap(OJPEGState *sp, jpeg_decompress_struct *cinfo,
418 : uint8_t require_image);
419 : extern int jpeg_start_decompress_encap(OJPEGState *sp,
420 : jpeg_decompress_struct *cinfo);
421 : extern int jpeg_read_scanlines_encap(OJPEGState *sp,
422 : jpeg_decompress_struct *cinfo,
423 : void *scanlines, uint32_t max_lines);
424 : extern int jpeg_read_raw_data_encap(OJPEGState *sp,
425 : jpeg_decompress_struct *cinfo, void *data,
426 : uint32_t max_lines);
427 : extern void jpeg_encap_unwind(TIFF *tif);
428 : #else
429 : static int jpeg_create_decompress_encap(OJPEGState *sp,
430 : jpeg_decompress_struct *j);
431 : static int jpeg_read_header_encap(OJPEGState *sp, jpeg_decompress_struct *cinfo,
432 : uint8_t require_image);
433 : static int jpeg_start_decompress_encap(OJPEGState *sp,
434 : jpeg_decompress_struct *cinfo);
435 : static int jpeg_read_scanlines_encap(OJPEGState *sp,
436 : jpeg_decompress_struct *cinfo,
437 : void *scanlines, uint32_t max_lines);
438 : static int jpeg_read_raw_data_encap(OJPEGState *sp,
439 : jpeg_decompress_struct *cinfo, void *data,
440 : uint32_t max_lines);
441 : static void jpeg_encap_unwind(TIFF *tif);
442 : #endif
443 :
444 : static void OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct *cinfo);
445 : static void OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct *cinfo);
446 : static void OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct *cinfo);
447 : static boolean
448 : OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct *cinfo);
449 : static void
450 : OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct *cinfo,
451 : long num_bytes);
452 : static boolean
453 : OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct *cinfo,
454 : int desired);
455 : static void OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct *cinfo);
456 :
457 2 : int TIFFInitOJPEG(TIFF *tif, int scheme)
458 : {
459 : static const char module[] = "TIFFInitOJPEG";
460 : OJPEGState *sp;
461 :
462 : (void)scheme;
463 2 : assert(scheme == COMPRESSION_OJPEG);
464 :
465 : /*
466 : * Merge codec-specific tag information.
467 : */
468 2 : if (!_TIFFMergeFields(tif, ojpegFields, TIFFArrayCount(ojpegFields)))
469 : {
470 0 : TIFFErrorExtR(tif, module,
471 : "Merging Old JPEG codec-specific tags failed");
472 0 : return 0;
473 : }
474 :
475 : /* state block */
476 2 : sp = _TIFFmallocExt(tif, sizeof(OJPEGState));
477 2 : if (sp == NULL)
478 : {
479 0 : TIFFErrorExtR(tif, module, "No space for OJPEG state block");
480 0 : return (0);
481 : }
482 2 : _TIFFmemset(sp, 0, sizeof(OJPEGState));
483 2 : sp->tif = tif;
484 2 : sp->jpeg_proc = 1;
485 2 : sp->subsampling_hor = 2;
486 2 : sp->subsampling_ver = 2;
487 2 : TIFFSetField(tif, TIFFTAG_YCBCRSUBSAMPLING, 2, 2);
488 : /* tif codec methods */
489 2 : tif->tif_fixuptags = OJPEGFixupTags;
490 2 : tif->tif_setupdecode = OJPEGSetupDecode;
491 2 : tif->tif_predecode = OJPEGPreDecode;
492 2 : tif->tif_postdecode = OJPEGPostDecode;
493 2 : tif->tif_decoderow = OJPEGDecode;
494 2 : tif->tif_decodestrip = OJPEGDecode;
495 2 : tif->tif_decodetile = OJPEGDecode;
496 2 : tif->tif_setupencode = OJPEGSetupEncode;
497 2 : tif->tif_preencode = OJPEGPreEncode;
498 2 : tif->tif_postencode = OJPEGPostEncode;
499 2 : tif->tif_encoderow = OJPEGEncode;
500 2 : tif->tif_encodestrip = OJPEGEncode;
501 2 : tif->tif_encodetile = OJPEGEncode;
502 2 : tif->tif_cleanup = OJPEGCleanup;
503 2 : tif->tif_data = (uint8_t *)sp;
504 : /* tif tag methods */
505 2 : sp->vgetparent = tif->tif_tagmethods.vgetfield;
506 2 : tif->tif_tagmethods.vgetfield = OJPEGVGetField;
507 2 : sp->vsetparent = tif->tif_tagmethods.vsetfield;
508 2 : tif->tif_tagmethods.vsetfield = OJPEGVSetField;
509 2 : sp->printdir = tif->tif_tagmethods.printdir;
510 2 : tif->tif_tagmethods.printdir = OJPEGPrintDir;
511 : /* Some OJPEG files don't have strip or tile offsets or bytecounts tags.
512 : Some others do, but have totally meaningless or corrupt values
513 : in these tags. In these cases, the JpegInterchangeFormat stream is
514 : reliable. In any case, this decoder reads the compressed data itself,
515 : from the most reliable locations, and we need to notify encapsulating
516 : LibTiff not to read raw strips or tiles for us. */
517 2 : tif->tif_flags |= TIFF_NOREADRAW;
518 2 : return (1);
519 : }
520 :
521 94 : static int OJPEGVGetField(TIFF *tif, uint32_t tag, va_list ap)
522 : {
523 94 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
524 94 : switch (tag)
525 : {
526 0 : case TIFFTAG_JPEGIFOFFSET:
527 0 : *va_arg(ap, uint64_t *) = (uint64_t)sp->jpeg_interchange_format;
528 0 : break;
529 0 : case TIFFTAG_JPEGIFBYTECOUNT:
530 0 : *va_arg(ap, uint64_t *) =
531 0 : (uint64_t)sp->jpeg_interchange_format_length;
532 0 : break;
533 8 : case TIFFTAG_YCBCRSUBSAMPLING:
534 8 : if (sp->subsamplingcorrect_done == 0)
535 2 : OJPEGSubsamplingCorrect(tif);
536 8 : *va_arg(ap, uint16_t *) = (uint16_t)sp->subsampling_hor;
537 8 : *va_arg(ap, uint16_t *) = (uint16_t)sp->subsampling_ver;
538 8 : break;
539 0 : case TIFFTAG_JPEGQTABLES:
540 0 : *va_arg(ap, uint32_t *) = (uint32_t)sp->qtable_offset_count;
541 0 : *va_arg(ap, const void **) = (const void *)sp->qtable_offset;
542 0 : break;
543 0 : case TIFFTAG_JPEGDCTABLES:
544 0 : *va_arg(ap, uint32_t *) = (uint32_t)sp->dctable_offset_count;
545 0 : *va_arg(ap, const void **) = (const void *)sp->dctable_offset;
546 0 : break;
547 0 : case TIFFTAG_JPEGACTABLES:
548 0 : *va_arg(ap, uint32_t *) = (uint32_t)sp->actable_offset_count;
549 0 : *va_arg(ap, const void **) = (const void *)sp->actable_offset;
550 0 : break;
551 0 : case TIFFTAG_JPEGPROC:
552 0 : *va_arg(ap, uint16_t *) = (uint16_t)sp->jpeg_proc;
553 0 : break;
554 0 : case TIFFTAG_JPEGRESTARTINTERVAL:
555 0 : *va_arg(ap, uint16_t *) = sp->restart_interval;
556 0 : break;
557 86 : default:
558 86 : return (*sp->vgetparent)(tif, tag, ap);
559 : }
560 8 : return (1);
561 : }
562 :
563 34 : static int OJPEGVSetField(TIFF *tif, uint32_t tag, va_list ap)
564 : {
565 : static const char module[] = "OJPEGVSetField";
566 34 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
567 : uint32_t ma;
568 : uint64_t *mb;
569 : uint32_t n;
570 : const TIFFField *fip;
571 :
572 34 : switch (tag)
573 : {
574 0 : case TIFFTAG_JPEGIFOFFSET:
575 0 : sp->jpeg_interchange_format = (uint64_t)va_arg(ap, uint64_t);
576 0 : break;
577 0 : case TIFFTAG_JPEGIFBYTECOUNT:
578 0 : sp->jpeg_interchange_format_length = (uint64_t)va_arg(ap, uint64_t);
579 0 : break;
580 2 : case TIFFTAG_YCBCRSUBSAMPLING:
581 2 : sp->subsampling_tag = 1;
582 2 : sp->subsampling_hor = (uint8_t)va_arg(ap, uint16_vap);
583 2 : sp->subsampling_ver = (uint8_t)va_arg(ap, uint16_vap);
584 2 : tif->tif_dir.td_ycbcrsubsampling[0] = sp->subsampling_hor;
585 2 : tif->tif_dir.td_ycbcrsubsampling[1] = sp->subsampling_ver;
586 2 : break;
587 2 : case TIFFTAG_JPEGQTABLES:
588 2 : ma = (uint32_t)va_arg(ap, uint32_t);
589 2 : if (ma != 0)
590 : {
591 2 : if (ma > 3)
592 : {
593 0 : TIFFErrorExtR(tif, module,
594 : "JpegQTables tag has incorrect count");
595 0 : return (0);
596 : }
597 2 : sp->qtable_offset_count = (uint8_t)ma;
598 2 : mb = (uint64_t *)va_arg(ap, uint64_t *);
599 8 : for (n = 0; n < ma; n++)
600 6 : sp->qtable_offset[n] = mb[n];
601 : }
602 2 : break;
603 2 : case TIFFTAG_JPEGDCTABLES:
604 2 : ma = (uint32_t)va_arg(ap, uint32_t);
605 2 : if (ma != 0)
606 : {
607 2 : if (ma > 3)
608 : {
609 0 : TIFFErrorExtR(tif, module,
610 : "JpegDcTables tag has incorrect count");
611 0 : return (0);
612 : }
613 2 : sp->dctable_offset_count = (uint8_t)ma;
614 2 : mb = (uint64_t *)va_arg(ap, uint64_t *);
615 8 : for (n = 0; n < ma; n++)
616 6 : sp->dctable_offset[n] = mb[n];
617 : }
618 2 : break;
619 2 : case TIFFTAG_JPEGACTABLES:
620 2 : ma = (uint32_t)va_arg(ap, uint32_t);
621 2 : if (ma != 0)
622 : {
623 2 : if (ma > 3)
624 : {
625 0 : TIFFErrorExtR(tif, module,
626 : "JpegAcTables tag has incorrect count");
627 0 : return (0);
628 : }
629 2 : sp->actable_offset_count = (uint8_t)ma;
630 2 : mb = (uint64_t *)va_arg(ap, uint64_t *);
631 8 : for (n = 0; n < ma; n++)
632 6 : sp->actable_offset[n] = mb[n];
633 : }
634 2 : break;
635 2 : case TIFFTAG_JPEGPROC:
636 2 : sp->jpeg_proc = (uint8_t)va_arg(ap, uint16_vap);
637 2 : break;
638 0 : case TIFFTAG_JPEGRESTARTINTERVAL:
639 0 : sp->restart_interval = (uint16_t)va_arg(ap, uint16_vap);
640 0 : break;
641 24 : default:
642 24 : return (*sp->vsetparent)(tif, tag, ap);
643 : }
644 10 : fip = TIFFFieldWithTag(tif, tag);
645 10 : if (fip == NULL) /* shouldn't happen */
646 0 : return (0);
647 10 : TIFFSetFieldBit(tif, fip->field_bit);
648 10 : tif->tif_flags |= TIFF_DIRTYDIRECT;
649 10 : return (1);
650 : }
651 :
652 0 : static void OJPEGPrintDir(TIFF *tif, FILE *fd, long flags)
653 : {
654 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
655 : uint8_t m;
656 : (void)flags;
657 0 : assert(sp != NULL);
658 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGINTERCHANGEFORMAT))
659 0 : fprintf(fd, " JpegInterchangeFormat: %" PRIu64 "\n",
660 0 : (uint64_t)sp->jpeg_interchange_format);
661 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH))
662 0 : fprintf(fd, " JpegInterchangeFormatLength: %" PRIu64 "\n",
663 0 : (uint64_t)sp->jpeg_interchange_format_length);
664 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGQTABLES))
665 : {
666 0 : fprintf(fd, " JpegQTables:");
667 0 : for (m = 0; m < sp->qtable_offset_count; m++)
668 0 : fprintf(fd, " %" PRIu64, (uint64_t)sp->qtable_offset[m]);
669 0 : fprintf(fd, "\n");
670 : }
671 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGDCTABLES))
672 : {
673 0 : fprintf(fd, " JpegDcTables:");
674 0 : for (m = 0; m < sp->dctable_offset_count; m++)
675 0 : fprintf(fd, " %" PRIu64, (uint64_t)sp->dctable_offset[m]);
676 0 : fprintf(fd, "\n");
677 : }
678 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGACTABLES))
679 : {
680 0 : fprintf(fd, " JpegAcTables:");
681 0 : for (m = 0; m < sp->actable_offset_count; m++)
682 0 : fprintf(fd, " %" PRIu64, (uint64_t)sp->actable_offset[m]);
683 0 : fprintf(fd, "\n");
684 : }
685 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGPROC))
686 0 : fprintf(fd, " JpegProc: %" PRIu8 "\n", sp->jpeg_proc);
687 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGRESTARTINTERVAL))
688 0 : fprintf(fd, " JpegRestartInterval: %" PRIu16 "\n",
689 0 : sp->restart_interval);
690 0 : if (sp->printdir)
691 0 : (*sp->printdir)(tif, fd, flags);
692 0 : }
693 :
694 2 : static int OJPEGFixupTags(TIFF *tif)
695 : {
696 : (void)tif;
697 2 : return (1);
698 : }
699 :
700 2 : static int OJPEGSetupDecode(TIFF *tif)
701 : {
702 : static const char module[] = "OJPEGSetupDecode";
703 2 : TIFFWarningExtR(tif, module,
704 : "Deprecated and troublesome old-style JPEG compression "
705 : "mode, please convert to new-style JPEG compression and "
706 : "notify vendor of writing software");
707 2 : return (1);
708 : }
709 :
710 2 : static int OJPEGPreDecode(TIFF *tif, uint16_t s)
711 : {
712 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
713 : uint32_t m;
714 2 : if (sp->subsamplingcorrect_done == 0)
715 0 : OJPEGSubsamplingCorrect(tif);
716 2 : if (sp->readheader_done == 0)
717 : {
718 2 : if (OJPEGReadHeaderInfo(tif) == 0)
719 1 : return (0);
720 : }
721 1 : if (sp->sos_end[s].log == 0)
722 : {
723 0 : if (OJPEGReadSecondarySos(tif, s) == 0)
724 0 : return (0);
725 : }
726 1 : if (isTiled(tif))
727 1 : m = tif->tif_curtile;
728 : else
729 0 : m = tif->tif_curstrip;
730 1 : if ((sp->writeheader_done != 0) &&
731 0 : ((sp->write_cursample != s) || (sp->write_curstrile > m)))
732 : {
733 0 : if (sp->libjpeg_session_active != 0)
734 0 : OJPEGLibjpegSessionAbort(tif);
735 0 : sp->writeheader_done = 0;
736 : }
737 1 : if (sp->writeheader_done == 0)
738 : {
739 1 : sp->plane_sample_offset = (uint8_t)s;
740 1 : sp->write_cursample = s;
741 1 : sp->write_curstrile = s * tif->tif_dir.td_stripsperimage;
742 1 : if ((sp->in_buffer_file_pos_log == 0) ||
743 0 : (sp->in_buffer_file_pos - sp->in_buffer_togo !=
744 0 : sp->sos_end[s].in_buffer_file_pos))
745 : {
746 1 : sp->in_buffer_source = sp->sos_end[s].in_buffer_source;
747 1 : sp->in_buffer_next_strile = sp->sos_end[s].in_buffer_next_strile;
748 1 : sp->in_buffer_file_pos = sp->sos_end[s].in_buffer_file_pos;
749 1 : sp->in_buffer_file_pos_log = 0;
750 1 : sp->in_buffer_file_togo = sp->sos_end[s].in_buffer_file_togo;
751 1 : sp->in_buffer_togo = 0;
752 1 : sp->in_buffer_cur = 0;
753 : }
754 1 : if (OJPEGWriteHeaderInfo(tif) == 0)
755 0 : return (0);
756 : }
757 :
758 1 : sp->subsampling_convert_state = 0;
759 :
760 1 : while (sp->write_curstrile < m)
761 : {
762 0 : if (sp->libjpeg_jpeg_query_style == 0)
763 : {
764 0 : if (OJPEGPreDecodeSkipRaw(tif) == 0)
765 0 : return (0);
766 : }
767 : else
768 : {
769 0 : if (OJPEGPreDecodeSkipScanlines(tif) == 0)
770 0 : return (0);
771 : }
772 0 : sp->write_curstrile++;
773 : }
774 1 : sp->decoder_ok = 1;
775 1 : return (1);
776 : }
777 :
778 0 : static int OJPEGPreDecodeSkipRaw(TIFF *tif)
779 : {
780 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
781 : uint32_t m;
782 0 : m = sp->lines_per_strile;
783 0 : if (sp->subsampling_convert_state != 0)
784 : {
785 0 : if (sp->subsampling_convert_clines - sp->subsampling_convert_state >= m)
786 : {
787 0 : sp->subsampling_convert_state += m;
788 0 : if (sp->subsampling_convert_state == sp->subsampling_convert_clines)
789 0 : sp->subsampling_convert_state = 0;
790 0 : return (1);
791 : }
792 0 : m -= sp->subsampling_convert_clines - sp->subsampling_convert_state;
793 0 : sp->subsampling_convert_state = 0;
794 0 : sp->error_in_raw_data_decoding = 0;
795 : }
796 0 : while (m >= sp->subsampling_convert_clines)
797 : {
798 0 : if (jpeg_read_raw_data_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
799 0 : sp->subsampling_convert_ycbcrimage,
800 0 : sp->subsampling_ver * 8) == 0)
801 0 : return (0);
802 0 : m -= sp->subsampling_convert_clines;
803 : }
804 0 : if (m > 0)
805 : {
806 0 : if (jpeg_read_raw_data_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
807 0 : sp->subsampling_convert_ycbcrimage,
808 0 : sp->subsampling_ver * 8) == 0)
809 0 : return (0);
810 0 : sp->subsampling_convert_state = m;
811 : }
812 0 : return (1);
813 : }
814 :
815 0 : static int OJPEGPreDecodeSkipScanlines(TIFF *tif)
816 : {
817 : static const char module[] = "OJPEGPreDecodeSkipScanlines";
818 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
819 : uint32_t m;
820 0 : if (sp->skip_buffer == NULL)
821 : {
822 0 : sp->skip_buffer = _TIFFmallocExt(tif, sp->bytes_per_line);
823 0 : if (sp->skip_buffer == NULL)
824 : {
825 0 : TIFFErrorExtR(tif, module, "Out of memory");
826 0 : return (0);
827 : }
828 : }
829 0 : for (m = 0; m < sp->lines_per_strile; m++)
830 : {
831 0 : if (jpeg_read_scanlines_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
832 0 : &sp->skip_buffer, 1) == 0)
833 0 : return (0);
834 : }
835 0 : return (1);
836 : }
837 :
838 1 : static int OJPEGDecode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s)
839 : {
840 : static const char module[] = "OJPEGDecode";
841 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
842 : (void)s;
843 1 : if (!sp->decoder_ok)
844 : {
845 0 : memset(buf, 0, (size_t)cc);
846 0 : TIFFErrorExtR(tif, module,
847 : "Cannot decode: decoder not correctly initialized");
848 0 : return 0;
849 : }
850 1 : if (sp->libjpeg_session_active == 0)
851 : {
852 0 : memset(buf, 0, (size_t)cc);
853 : /* This should normally not happen, except that it does when */
854 : /* using TIFFReadScanline() which calls OJPEGPostDecode() for */
855 : /* each scanline, which assumes that a whole strile was read */
856 : /* and may thus incorrectly consider it has read the whole image,
857 : * causing */
858 : /* OJPEGLibjpegSessionAbort() to be called prematurely. */
859 : /* Triggered by https://gitlab.com/libtiff/libtiff/-/issues/337 */
860 0 : TIFFErrorExtR(tif, module,
861 : "Cannot decode: libjpeg_session_active == 0");
862 0 : return 0;
863 : }
864 1 : if (sp->error_in_raw_data_decoding)
865 : {
866 0 : memset(buf, 0, (size_t)cc);
867 0 : return 0;
868 : }
869 1 : if (sp->libjpeg_jpeg_query_style == 0)
870 : {
871 1 : if (OJPEGDecodeRaw(tif, buf, cc) == 0)
872 : {
873 0 : memset(buf, 0, (size_t)cc);
874 0 : return (0);
875 : }
876 : }
877 : else
878 : {
879 0 : if (OJPEGDecodeScanlines(tif, buf, cc) == 0)
880 : {
881 0 : memset(buf, 0, (size_t)cc);
882 0 : return (0);
883 : }
884 : }
885 1 : return (1);
886 : }
887 :
888 1 : static int OJPEGDecodeRaw(TIFF *tif, uint8_t *buf, tmsize_t cc)
889 : {
890 : static const char module[] = "OJPEGDecodeRaw";
891 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
892 : uint8_t *m;
893 : tmsize_t n;
894 : uint8_t *oy;
895 : uint8_t *ocb;
896 : uint8_t *ocr;
897 : uint8_t *p;
898 : uint32_t q;
899 : uint8_t *r;
900 : uint8_t sx, sy;
901 1 : if (cc % sp->bytes_per_line != 0)
902 : {
903 0 : TIFFErrorExtR(tif, module, "Fractional scanline not read");
904 0 : return (0);
905 : }
906 1 : assert(cc > 0);
907 1 : m = buf;
908 1 : n = cc;
909 : do
910 : {
911 112 : if (sp->subsampling_convert_state == 0)
912 : {
913 14 : if (jpeg_read_raw_data_encap(sp,
914 : &(sp->libjpeg_jpeg_decompress_struct),
915 14 : sp->subsampling_convert_ycbcrimage,
916 14 : sp->subsampling_ver * 8) == 0)
917 : {
918 0 : sp->error_in_raw_data_decoding = 1;
919 0 : return (0);
920 : }
921 : }
922 112 : oy = sp->subsampling_convert_ybuf +
923 112 : sp->subsampling_convert_state * sp->subsampling_ver *
924 112 : sp->subsampling_convert_ylinelen;
925 112 : ocb = sp->subsampling_convert_cbbuf +
926 112 : sp->subsampling_convert_state * sp->subsampling_convert_clinelen;
927 112 : ocr = sp->subsampling_convert_crbuf +
928 112 : sp->subsampling_convert_state * sp->subsampling_convert_clinelen;
929 112 : p = m;
930 13552 : for (q = 0; q < sp->subsampling_convert_clinelenout; q++)
931 : {
932 13440 : r = oy;
933 40320 : for (sy = 0; sy < sp->subsampling_ver; sy++)
934 : {
935 80640 : for (sx = 0; sx < sp->subsampling_hor; sx++)
936 53760 : *p++ = *r++;
937 26880 : r += sp->subsampling_convert_ylinelen - sp->subsampling_hor;
938 : }
939 13440 : oy += sp->subsampling_hor;
940 13440 : *p++ = *ocb++;
941 13440 : *p++ = *ocr++;
942 : }
943 112 : sp->subsampling_convert_state++;
944 112 : if (sp->subsampling_convert_state == sp->subsampling_convert_clines)
945 14 : sp->subsampling_convert_state = 0;
946 112 : m += sp->bytes_per_line;
947 112 : n -= sp->bytes_per_line;
948 112 : } while (n > 0);
949 1 : return (1);
950 : }
951 :
952 0 : static int OJPEGDecodeScanlines(TIFF *tif, uint8_t *buf, tmsize_t cc)
953 : {
954 : static const char module[] = "OJPEGDecodeScanlines";
955 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
956 : uint8_t *m;
957 : tmsize_t n;
958 0 : if (cc % sp->bytes_per_line != 0)
959 : {
960 0 : TIFFErrorExtR(tif, module, "Fractional scanline not read");
961 0 : return (0);
962 : }
963 0 : assert(cc > 0);
964 0 : m = buf;
965 0 : n = cc;
966 : do
967 : {
968 0 : if (jpeg_read_scanlines_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
969 : &m, 1) == 0)
970 0 : return (0);
971 0 : m += sp->bytes_per_line;
972 0 : n -= sp->bytes_per_line;
973 0 : } while (n > 0);
974 0 : return (1);
975 : }
976 :
977 0 : static void OJPEGPostDecode(TIFF *tif, uint8_t *buf, tmsize_t cc)
978 : {
979 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
980 : (void)buf;
981 : (void)cc;
982 : /* This function somehow incorrectly assumes that a whole strile was read,
983 : */
984 : /* which is not true when TIFFReadScanline() is called, */
985 : /* and may thus incorrectly consider it has read the whole image, causing */
986 : /* OJPEGLibjpegSessionAbort() to be called prematurely. */
987 : /* So this logic should be fixed to take into account cc, or disable */
988 : /* the scan line reading interface. */
989 : /* Triggered by https://gitlab.com/libtiff/libtiff/-/issues/337 */
990 0 : sp->write_curstrile++;
991 0 : if (sp->write_curstrile % tif->tif_dir.td_stripsperimage == 0)
992 : {
993 0 : assert(sp->libjpeg_session_active != 0);
994 0 : OJPEGLibjpegSessionAbort(tif);
995 0 : sp->writeheader_done = 0;
996 : }
997 0 : }
998 :
999 0 : static int OJPEGSetupEncode(TIFF *tif)
1000 : {
1001 : static const char module[] = "OJPEGSetupEncode";
1002 0 : TIFFErrorExtR(
1003 : tif, module,
1004 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1005 0 : return (0);
1006 : }
1007 :
1008 0 : static int OJPEGPreEncode(TIFF *tif, uint16_t s)
1009 : {
1010 : static const char module[] = "OJPEGPreEncode";
1011 : (void)s;
1012 0 : TIFFErrorExtR(
1013 : tif, module,
1014 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1015 0 : return (0);
1016 : }
1017 :
1018 0 : static int OJPEGEncode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s)
1019 : {
1020 : static const char module[] = "OJPEGEncode";
1021 : (void)buf;
1022 : (void)cc;
1023 : (void)s;
1024 0 : TIFFErrorExtR(
1025 : tif, module,
1026 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1027 0 : return (0);
1028 : }
1029 :
1030 0 : static int OJPEGPostEncode(TIFF *tif)
1031 : {
1032 : static const char module[] = "OJPEGPostEncode";
1033 0 : TIFFErrorExtR(
1034 : tif, module,
1035 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1036 0 : return (0);
1037 : }
1038 :
1039 2 : static void OJPEGCleanup(TIFF *tif)
1040 : {
1041 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1042 2 : if (sp != 0)
1043 : {
1044 2 : tif->tif_tagmethods.vgetfield = sp->vgetparent;
1045 2 : tif->tif_tagmethods.vsetfield = sp->vsetparent;
1046 2 : tif->tif_tagmethods.printdir = sp->printdir;
1047 2 : if (sp->qtable[0] != 0)
1048 1 : _TIFFfreeExt(tif, sp->qtable[0]);
1049 2 : if (sp->qtable[1] != 0)
1050 1 : _TIFFfreeExt(tif, sp->qtable[1]);
1051 2 : if (sp->qtable[2] != 0)
1052 1 : _TIFFfreeExt(tif, sp->qtable[2]);
1053 2 : if (sp->qtable[3] != 0)
1054 0 : _TIFFfreeExt(tif, sp->qtable[3]);
1055 2 : if (sp->dctable[0] != 0)
1056 1 : _TIFFfreeExt(tif, sp->dctable[0]);
1057 2 : if (sp->dctable[1] != 0)
1058 1 : _TIFFfreeExt(tif, sp->dctable[1]);
1059 2 : if (sp->dctable[2] != 0)
1060 1 : _TIFFfreeExt(tif, sp->dctable[2]);
1061 2 : if (sp->dctable[3] != 0)
1062 0 : _TIFFfreeExt(tif, sp->dctable[3]);
1063 2 : if (sp->actable[0] != 0)
1064 1 : _TIFFfreeExt(tif, sp->actable[0]);
1065 2 : if (sp->actable[1] != 0)
1066 1 : _TIFFfreeExt(tif, sp->actable[1]);
1067 2 : if (sp->actable[2] != 0)
1068 1 : _TIFFfreeExt(tif, sp->actable[2]);
1069 2 : if (sp->actable[3] != 0)
1070 0 : _TIFFfreeExt(tif, sp->actable[3]);
1071 2 : if (sp->libjpeg_session_active != 0)
1072 1 : OJPEGLibjpegSessionAbort(tif);
1073 2 : if (sp->subsampling_convert_ycbcrbuf != 0)
1074 1 : _TIFFfreeExt(tif, sp->subsampling_convert_ycbcrbuf);
1075 2 : if (sp->subsampling_convert_ycbcrimage != 0)
1076 1 : _TIFFfreeExt(tif, sp->subsampling_convert_ycbcrimage);
1077 2 : if (sp->skip_buffer != 0)
1078 0 : _TIFFfreeExt(tif, sp->skip_buffer);
1079 2 : _TIFFfreeExt(tif, sp);
1080 2 : tif->tif_data = NULL;
1081 2 : _TIFFSetDefaultCompressionState(tif);
1082 : }
1083 2 : }
1084 :
1085 2 : static void OJPEGSubsamplingCorrect(TIFF *tif)
1086 : {
1087 : static const char module[] = "OJPEGSubsamplingCorrect";
1088 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1089 : uint8_t mh;
1090 : uint8_t mv;
1091 :
1092 2 : assert(sp->subsamplingcorrect_done == 0);
1093 2 : if ((tif->tif_dir.td_samplesperpixel != 3) ||
1094 2 : ((tif->tif_dir.td_photometric != PHOTOMETRIC_YCBCR) &&
1095 0 : (tif->tif_dir.td_photometric != PHOTOMETRIC_ITULAB)))
1096 : {
1097 0 : if (sp->subsampling_tag != 0)
1098 0 : TIFFWarningExtR(tif, module,
1099 : "Subsampling tag not appropriate for this "
1100 : "Photometric and/or SamplesPerPixel");
1101 0 : sp->subsampling_hor = 1;
1102 0 : sp->subsampling_ver = 1;
1103 0 : sp->subsampling_force_desubsampling_inside_decompression = 0;
1104 : }
1105 : else
1106 : {
1107 2 : sp->subsamplingcorrect_done = 1;
1108 2 : mh = sp->subsampling_hor;
1109 2 : mv = sp->subsampling_ver;
1110 2 : sp->subsamplingcorrect = 1;
1111 2 : OJPEGReadHeaderInfoSec(tif);
1112 2 : if (sp->subsampling_force_desubsampling_inside_decompression != 0)
1113 : {
1114 0 : sp->subsampling_hor = 1;
1115 0 : sp->subsampling_ver = 1;
1116 : }
1117 2 : sp->subsamplingcorrect = 0;
1118 2 : if (((sp->subsampling_hor != mh) || (sp->subsampling_ver != mv)) &&
1119 0 : (sp->subsampling_force_desubsampling_inside_decompression == 0))
1120 : {
1121 0 : if (sp->subsampling_tag == 0)
1122 0 : TIFFWarningExtR(
1123 : tif, module,
1124 : "Subsampling tag is not set, yet subsampling inside JPEG "
1125 : "data [%" PRIu8 ",%" PRIu8
1126 : "] does not match default values [2,2]; assuming "
1127 : "subsampling inside JPEG data is correct",
1128 0 : sp->subsampling_hor, sp->subsampling_ver);
1129 : else
1130 0 : TIFFWarningExtR(
1131 : tif, module,
1132 : "Subsampling inside JPEG data [%" PRIu8 ",%" PRIu8
1133 : "] does not match subsampling tag values [%" PRIu8
1134 : ",%" PRIu8
1135 : "]; assuming subsampling inside JPEG data is correct",
1136 0 : sp->subsampling_hor, sp->subsampling_ver, mh, mv);
1137 : }
1138 2 : if (sp->subsampling_force_desubsampling_inside_decompression != 0)
1139 : {
1140 0 : if (sp->subsampling_tag == 0)
1141 0 : TIFFWarningExtR(
1142 : tif, module,
1143 : "Subsampling tag is not set, yet subsampling inside JPEG "
1144 : "data does not match default values [2,2] (nor any other "
1145 : "values allowed in TIFF); assuming subsampling inside JPEG "
1146 : "data is correct and desubsampling inside JPEG "
1147 : "decompression");
1148 : else
1149 0 : TIFFWarningExtR(
1150 : tif, module,
1151 : "Subsampling inside JPEG data does not match subsampling "
1152 : "tag values [%" PRIu8 ",%" PRIu8
1153 : "] (nor any other values allowed in TIFF); assuming "
1154 : "subsampling inside JPEG data is correct and desubsampling "
1155 : "inside JPEG decompression",
1156 : mh, mv);
1157 : }
1158 2 : if (sp->subsampling_force_desubsampling_inside_decompression == 0)
1159 : {
1160 2 : if (sp->subsampling_hor < sp->subsampling_ver)
1161 0 : TIFFWarningExtR(tif, module,
1162 : "Subsampling values [%" PRIu8 ",%" PRIu8
1163 : "] are not allowed in TIFF",
1164 0 : sp->subsampling_hor, sp->subsampling_ver);
1165 : }
1166 : }
1167 2 : sp->subsamplingcorrect_done = 1;
1168 2 : }
1169 :
1170 2 : static int OJPEGReadHeaderInfo(TIFF *tif)
1171 : {
1172 : static const char module[] = "OJPEGReadHeaderInfo";
1173 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1174 2 : assert(sp->readheader_done == 0);
1175 2 : sp->image_width = tif->tif_dir.td_imagewidth;
1176 2 : sp->image_length = tif->tif_dir.td_imagelength;
1177 2 : if (isTiled(tif))
1178 : {
1179 2 : sp->strile_width = tif->tif_dir.td_tilewidth;
1180 2 : sp->strile_length = tif->tif_dir.td_tilelength;
1181 2 : sp->strile_length_total =
1182 2 : ((sp->image_length + sp->strile_length - 1) / sp->strile_length) *
1183 2 : sp->strile_length;
1184 : }
1185 : else
1186 : {
1187 0 : sp->strile_width = sp->image_width;
1188 0 : sp->strile_length = tif->tif_dir.td_rowsperstrip;
1189 0 : if (sp->strile_length == (uint32_t)-1)
1190 0 : sp->strile_length = sp->image_length;
1191 0 : sp->strile_length_total = sp->image_length;
1192 : }
1193 2 : if (tif->tif_dir.td_samplesperpixel == 1)
1194 : {
1195 0 : sp->samples_per_pixel = 1;
1196 0 : sp->plane_sample_offset = 0;
1197 0 : sp->samples_per_pixel_per_plane = sp->samples_per_pixel;
1198 0 : sp->subsampling_hor = 1;
1199 0 : sp->subsampling_ver = 1;
1200 : }
1201 : else
1202 : {
1203 2 : if (tif->tif_dir.td_samplesperpixel != 3)
1204 : {
1205 0 : TIFFErrorExtR(tif, module,
1206 : "SamplesPerPixel %" PRIu8
1207 : " not supported for this compression scheme",
1208 0 : sp->samples_per_pixel);
1209 0 : return (0);
1210 : }
1211 2 : sp->samples_per_pixel = 3;
1212 2 : sp->plane_sample_offset = 0;
1213 2 : if (tif->tif_dir.td_planarconfig == PLANARCONFIG_CONTIG)
1214 2 : sp->samples_per_pixel_per_plane = 3;
1215 : else
1216 0 : sp->samples_per_pixel_per_plane = 1;
1217 : }
1218 2 : if (sp->strile_length < sp->image_length)
1219 : {
1220 0 : if (((sp->subsampling_hor != 1) && (sp->subsampling_hor != 2) &&
1221 0 : (sp->subsampling_hor != 4)) ||
1222 0 : ((sp->subsampling_ver != 1) && (sp->subsampling_ver != 2) &&
1223 0 : (sp->subsampling_ver != 4)))
1224 : {
1225 0 : TIFFErrorExtR(tif, module, "Invalid subsampling values");
1226 0 : return (0);
1227 : }
1228 0 : if (sp->strile_length % (sp->subsampling_ver * 8) != 0)
1229 : {
1230 0 : TIFFErrorExtR(tif, module,
1231 : "Incompatible vertical subsampling and image "
1232 : "strip/tile length");
1233 0 : return (0);
1234 : }
1235 0 : sp->restart_interval =
1236 0 : (uint16_t)(((sp->strile_width + sp->subsampling_hor * 8 - 1) /
1237 0 : (sp->subsampling_hor * 8)) *
1238 0 : (sp->strile_length / (sp->subsampling_ver * 8)));
1239 : }
1240 2 : if (OJPEGReadHeaderInfoSec(tif) == 0)
1241 1 : return (0);
1242 1 : sp->sos_end[0].log = 1;
1243 1 : sp->sos_end[0].in_buffer_source = sp->in_buffer_source;
1244 1 : sp->sos_end[0].in_buffer_next_strile = sp->in_buffer_next_strile;
1245 1 : sp->sos_end[0].in_buffer_file_pos =
1246 1 : sp->in_buffer_file_pos - sp->in_buffer_togo;
1247 1 : sp->sos_end[0].in_buffer_file_togo =
1248 1 : sp->in_buffer_file_togo + sp->in_buffer_togo;
1249 1 : sp->readheader_done = 1;
1250 1 : return (1);
1251 : }
1252 :
1253 0 : static int OJPEGReadSecondarySos(TIFF *tif, uint16_t s)
1254 : {
1255 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1256 : uint8_t m;
1257 0 : assert(s > 0);
1258 0 : assert(s < 3);
1259 0 : assert(sp->sos_end[0].log != 0);
1260 0 : assert(sp->sos_end[s].log == 0);
1261 0 : sp->plane_sample_offset = (uint8_t)(s - 1);
1262 0 : while (sp->sos_end[sp->plane_sample_offset].log == 0)
1263 0 : sp->plane_sample_offset--;
1264 0 : sp->in_buffer_source =
1265 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_source;
1266 0 : sp->in_buffer_next_strile =
1267 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile;
1268 0 : sp->in_buffer_file_pos =
1269 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos;
1270 0 : sp->in_buffer_file_pos_log = 0;
1271 0 : sp->in_buffer_file_togo =
1272 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo;
1273 0 : sp->in_buffer_togo = 0;
1274 0 : sp->in_buffer_cur = 0;
1275 0 : while (sp->plane_sample_offset < s)
1276 : {
1277 : do
1278 : {
1279 0 : if (OJPEGReadByte(sp, &m) == 0)
1280 0 : return (0);
1281 0 : if (m == 255)
1282 : {
1283 : do
1284 : {
1285 0 : if (OJPEGReadByte(sp, &m) == 0)
1286 0 : return (0);
1287 0 : if (m != 255)
1288 0 : break;
1289 : } while (1);
1290 0 : if (m == JPEG_MARKER_SOS)
1291 0 : break;
1292 : }
1293 : } while (1);
1294 0 : sp->plane_sample_offset++;
1295 0 : if (OJPEGReadHeaderInfoSecStreamSos(tif) == 0)
1296 0 : return (0);
1297 0 : sp->sos_end[sp->plane_sample_offset].log = 1;
1298 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_source =
1299 0 : sp->in_buffer_source;
1300 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile =
1301 0 : sp->in_buffer_next_strile;
1302 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos =
1303 0 : sp->in_buffer_file_pos - sp->in_buffer_togo;
1304 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo =
1305 0 : sp->in_buffer_file_togo + sp->in_buffer_togo;
1306 : }
1307 0 : return (1);
1308 : }
1309 :
1310 1 : static int OJPEGWriteHeaderInfo(TIFF *tif)
1311 : {
1312 : static const char module[] = "OJPEGWriteHeaderInfo";
1313 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1314 : uint8_t **m;
1315 : uint32_t n;
1316 : /* if a previous attempt failed, don't try again */
1317 1 : if (sp->libjpeg_session_active != 0)
1318 0 : return 0;
1319 1 : sp->out_state = ososSoi;
1320 1 : sp->restart_index = 0;
1321 1 : jpeg_std_error(&(sp->libjpeg_jpeg_error_mgr));
1322 1 : sp->libjpeg_jpeg_error_mgr.output_message =
1323 : OJPEGLibjpegJpegErrorMgrOutputMessage;
1324 1 : sp->libjpeg_jpeg_error_mgr.error_exit = OJPEGLibjpegJpegErrorMgrErrorExit;
1325 1 : sp->libjpeg_jpeg_decompress_struct.err = &(sp->libjpeg_jpeg_error_mgr);
1326 1 : sp->libjpeg_jpeg_decompress_struct.client_data = (void *)tif;
1327 1 : if (jpeg_create_decompress_encap(
1328 : sp, &(sp->libjpeg_jpeg_decompress_struct)) == 0)
1329 0 : return (0);
1330 1 : sp->libjpeg_session_active = 1;
1331 1 : sp->libjpeg_jpeg_source_mgr.bytes_in_buffer = 0;
1332 1 : sp->libjpeg_jpeg_source_mgr.init_source =
1333 : OJPEGLibjpegJpegSourceMgrInitSource;
1334 1 : sp->libjpeg_jpeg_source_mgr.fill_input_buffer =
1335 : OJPEGLibjpegJpegSourceMgrFillInputBuffer;
1336 1 : sp->libjpeg_jpeg_source_mgr.skip_input_data =
1337 : OJPEGLibjpegJpegSourceMgrSkipInputData;
1338 1 : sp->libjpeg_jpeg_source_mgr.resync_to_restart =
1339 : OJPEGLibjpegJpegSourceMgrResyncToRestart;
1340 1 : sp->libjpeg_jpeg_source_mgr.term_source =
1341 : OJPEGLibjpegJpegSourceMgrTermSource;
1342 1 : sp->libjpeg_jpeg_decompress_struct.src = &(sp->libjpeg_jpeg_source_mgr);
1343 1 : if (jpeg_read_header_encap(sp, &(sp->libjpeg_jpeg_decompress_struct), 1) ==
1344 : 0)
1345 0 : return (0);
1346 1 : if ((sp->subsampling_force_desubsampling_inside_decompression == 0) &&
1347 1 : (sp->samples_per_pixel_per_plane > 1))
1348 : {
1349 1 : sp->libjpeg_jpeg_decompress_struct.raw_data_out = 1;
1350 : #if JPEG_LIB_VERSION >= 70
1351 1 : sp->libjpeg_jpeg_decompress_struct.do_fancy_upsampling = FALSE;
1352 : #endif
1353 1 : sp->libjpeg_jpeg_query_style = 0;
1354 1 : if (sp->subsampling_convert_log == 0)
1355 : {
1356 1 : assert(sp->subsampling_convert_ycbcrbuf == 0);
1357 1 : assert(sp->subsampling_convert_ycbcrimage == 0);
1358 : /* Check for division by zero. */
1359 1 : if (sp->subsampling_hor == 0 || sp->subsampling_ver == 0)
1360 0 : return (0);
1361 1 : sp->subsampling_convert_ylinelen =
1362 1 : ((sp->strile_width + sp->subsampling_hor * 8 - 1) /
1363 1 : (sp->subsampling_hor * 8) * sp->subsampling_hor * 8);
1364 1 : sp->subsampling_convert_ylines = sp->subsampling_ver * 8;
1365 1 : sp->subsampling_convert_clinelen =
1366 1 : sp->subsampling_convert_ylinelen / sp->subsampling_hor;
1367 1 : sp->subsampling_convert_clines = 8;
1368 1 : sp->subsampling_convert_ybuflen = sp->subsampling_convert_ylinelen *
1369 1 : sp->subsampling_convert_ylines;
1370 1 : sp->subsampling_convert_cbuflen = sp->subsampling_convert_clinelen *
1371 1 : sp->subsampling_convert_clines;
1372 1 : sp->subsampling_convert_ycbcrbuflen =
1373 1 : sp->subsampling_convert_ybuflen +
1374 1 : 2 * sp->subsampling_convert_cbuflen;
1375 : /* The calloc is not normally necessary, except in some edge/broken
1376 : * cases */
1377 : /* for example for a tiled image of height 1 with a tile height of 1
1378 : * and subsampling_hor=subsampling_ver=2 */
1379 : /* In that case, libjpeg will only fill the 8 first lines of the 16
1380 : * lines */
1381 : /* See https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16844
1382 : */
1383 : /* Even if this case is allowed (?), its handling is broken because
1384 : * OJPEGPreDecode() should also likely */
1385 : /* reset subsampling_convert_state to 0 when changing tile. */
1386 1 : sp->subsampling_convert_ycbcrbuf =
1387 1 : _TIFFcallocExt(tif, 1, sp->subsampling_convert_ycbcrbuflen);
1388 1 : if (sp->subsampling_convert_ycbcrbuf == 0)
1389 : {
1390 0 : TIFFErrorExtR(tif, module, "Out of memory");
1391 0 : return (0);
1392 : }
1393 1 : sp->subsampling_convert_ybuf = sp->subsampling_convert_ycbcrbuf;
1394 1 : sp->subsampling_convert_cbbuf =
1395 1 : sp->subsampling_convert_ybuf + sp->subsampling_convert_ybuflen;
1396 1 : sp->subsampling_convert_crbuf =
1397 1 : sp->subsampling_convert_cbbuf + sp->subsampling_convert_cbuflen;
1398 1 : sp->subsampling_convert_ycbcrimagelen =
1399 1 : 3 + sp->subsampling_convert_ylines +
1400 1 : 2 * sp->subsampling_convert_clines;
1401 2 : sp->subsampling_convert_ycbcrimage = _TIFFmallocExt(
1402 1 : tif, sp->subsampling_convert_ycbcrimagelen * sizeof(uint8_t *));
1403 1 : if (sp->subsampling_convert_ycbcrimage == 0)
1404 : {
1405 0 : TIFFErrorExtR(tif, module, "Out of memory");
1406 0 : return (0);
1407 : }
1408 1 : m = sp->subsampling_convert_ycbcrimage;
1409 1 : *m++ = (uint8_t *)(sp->subsampling_convert_ycbcrimage + 3);
1410 1 : *m++ = (uint8_t *)(sp->subsampling_convert_ycbcrimage + 3 +
1411 1 : sp->subsampling_convert_ylines);
1412 1 : *m++ = (uint8_t *)(sp->subsampling_convert_ycbcrimage + 3 +
1413 1 : sp->subsampling_convert_ylines +
1414 1 : sp->subsampling_convert_clines);
1415 17 : for (n = 0; n < sp->subsampling_convert_ylines; n++)
1416 16 : *m++ = sp->subsampling_convert_ybuf +
1417 16 : n * sp->subsampling_convert_ylinelen;
1418 9 : for (n = 0; n < sp->subsampling_convert_clines; n++)
1419 8 : *m++ = sp->subsampling_convert_cbbuf +
1420 8 : n * sp->subsampling_convert_clinelen;
1421 9 : for (n = 0; n < sp->subsampling_convert_clines; n++)
1422 8 : *m++ = sp->subsampling_convert_crbuf +
1423 8 : n * sp->subsampling_convert_clinelen;
1424 1 : sp->subsampling_convert_clinelenout =
1425 2 : sp->strile_width / sp->subsampling_hor +
1426 1 : ((sp->strile_width % sp->subsampling_hor) != 0 ? 1 : 0);
1427 1 : sp->subsampling_convert_state = 0;
1428 1 : sp->error_in_raw_data_decoding = 0;
1429 1 : sp->bytes_per_line =
1430 1 : sp->subsampling_convert_clinelenout *
1431 1 : (sp->subsampling_ver * sp->subsampling_hor + 2);
1432 1 : sp->lines_per_strile =
1433 2 : sp->strile_length / sp->subsampling_ver +
1434 1 : ((sp->strile_length % sp->subsampling_ver) != 0 ? 1 : 0);
1435 1 : sp->subsampling_convert_log = 1;
1436 : }
1437 : }
1438 : else
1439 : {
1440 0 : sp->libjpeg_jpeg_decompress_struct.jpeg_color_space = JCS_UNKNOWN;
1441 0 : sp->libjpeg_jpeg_decompress_struct.out_color_space = JCS_UNKNOWN;
1442 0 : sp->libjpeg_jpeg_query_style = 1;
1443 0 : sp->bytes_per_line = sp->samples_per_pixel_per_plane * sp->strile_width;
1444 0 : sp->lines_per_strile = sp->strile_length;
1445 : }
1446 1 : if (jpeg_start_decompress_encap(sp,
1447 : &(sp->libjpeg_jpeg_decompress_struct)) == 0)
1448 0 : return (0);
1449 1 : if (sp->libjpeg_jpeg_decompress_struct.image_width != sp->strile_width)
1450 : {
1451 0 : TIFFErrorExtR(tif, module,
1452 : "jpeg_start_decompress() returned image_width = %u, "
1453 : "expected %" PRIu32,
1454 : sp->libjpeg_jpeg_decompress_struct.image_width,
1455 : sp->strile_width);
1456 0 : return 0;
1457 : }
1458 1 : if (sp->libjpeg_jpeg_decompress_struct.max_h_samp_factor !=
1459 1 : sp->subsampling_hor ||
1460 1 : sp->libjpeg_jpeg_decompress_struct.max_v_samp_factor !=
1461 1 : sp->subsampling_ver)
1462 : {
1463 0 : TIFFErrorExtR(tif, module,
1464 : "jpeg_start_decompress() returned max_h_samp_factor = %d "
1465 : "and max_v_samp_factor = %d, expected %" PRIu8
1466 : " and %" PRIu8,
1467 : sp->libjpeg_jpeg_decompress_struct.max_h_samp_factor,
1468 : sp->libjpeg_jpeg_decompress_struct.max_v_samp_factor,
1469 0 : sp->subsampling_hor, sp->subsampling_ver);
1470 0 : return 0;
1471 : }
1472 :
1473 1 : sp->writeheader_done = 1;
1474 1 : return (1);
1475 : }
1476 :
1477 1 : static void OJPEGLibjpegSessionAbort(TIFF *tif)
1478 : {
1479 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1480 1 : assert(sp->libjpeg_session_active != 0);
1481 1 : jpeg_destroy((jpeg_common_struct *)(&(sp->libjpeg_jpeg_decompress_struct)));
1482 1 : sp->libjpeg_session_active = 0;
1483 1 : }
1484 :
1485 4 : static int OJPEGReadHeaderInfoSec(TIFF *tif)
1486 : {
1487 : static const char module[] = "OJPEGReadHeaderInfoSec";
1488 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1489 : uint8_t m;
1490 : uint16_t n;
1491 : uint8_t o;
1492 4 : if (sp->file_size == 0)
1493 2 : sp->file_size = TIFFGetFileSize(tif);
1494 4 : if (sp->jpeg_interchange_format != 0)
1495 : {
1496 0 : if (sp->jpeg_interchange_format >= sp->file_size)
1497 : {
1498 0 : sp->jpeg_interchange_format = 0;
1499 0 : sp->jpeg_interchange_format_length = 0;
1500 : }
1501 : else
1502 : {
1503 0 : if ((sp->jpeg_interchange_format_length == 0) ||
1504 0 : (sp->jpeg_interchange_format >
1505 0 : UINT64_MAX - sp->jpeg_interchange_format_length) ||
1506 0 : (sp->jpeg_interchange_format +
1507 0 : sp->jpeg_interchange_format_length >
1508 0 : sp->file_size))
1509 0 : sp->jpeg_interchange_format_length =
1510 0 : sp->file_size - sp->jpeg_interchange_format;
1511 : }
1512 : }
1513 4 : sp->in_buffer_source = osibsNotSetYet;
1514 4 : sp->in_buffer_next_strile = 0;
1515 4 : sp->in_buffer_strile_count = tif->tif_dir.td_nstrips;
1516 4 : sp->in_buffer_file_togo = 0;
1517 4 : sp->in_buffer_togo = 0;
1518 : do
1519 : {
1520 4 : if (OJPEGReadBytePeek(sp, &m) == 0)
1521 2 : return (0);
1522 2 : if (m != 255)
1523 2 : break;
1524 0 : OJPEGReadByteAdvance(sp);
1525 : do
1526 : {
1527 0 : if (OJPEGReadByte(sp, &m) == 0)
1528 0 : return (0);
1529 0 : } while (m == 255);
1530 0 : switch (m)
1531 : {
1532 0 : case JPEG_MARKER_SOI:
1533 : /* this type of marker has no data, and should be skipped */
1534 0 : break;
1535 0 : case JPEG_MARKER_COM:
1536 : case JPEG_MARKER_APP0:
1537 : case JPEG_MARKER_APP0 + 1:
1538 : case JPEG_MARKER_APP0 + 2:
1539 : case JPEG_MARKER_APP0 + 3:
1540 : case JPEG_MARKER_APP0 + 4:
1541 : case JPEG_MARKER_APP0 + 5:
1542 : case JPEG_MARKER_APP0 + 6:
1543 : case JPEG_MARKER_APP0 + 7:
1544 : case JPEG_MARKER_APP0 + 8:
1545 : case JPEG_MARKER_APP0 + 9:
1546 : case JPEG_MARKER_APP0 + 10:
1547 : case JPEG_MARKER_APP0 + 11:
1548 : case JPEG_MARKER_APP0 + 12:
1549 : case JPEG_MARKER_APP0 + 13:
1550 : case JPEG_MARKER_APP0 + 14:
1551 : case JPEG_MARKER_APP0 + 15:
1552 : /* this type of marker has data, but it has no use to us (and no
1553 : * place here) and should be skipped */
1554 0 : if (OJPEGReadWord(sp, &n) == 0)
1555 0 : return (0);
1556 0 : if (n < 2)
1557 : {
1558 0 : if (sp->subsamplingcorrect == 0)
1559 0 : TIFFErrorExtR(tif, module, "Corrupt JPEG data");
1560 0 : return (0);
1561 : }
1562 0 : if (n > 2)
1563 0 : OJPEGReadSkip(sp, n - 2);
1564 0 : break;
1565 0 : case JPEG_MARKER_DRI:
1566 0 : if (OJPEGReadHeaderInfoSecStreamDri(tif) == 0)
1567 0 : return (0);
1568 0 : break;
1569 0 : case JPEG_MARKER_DQT:
1570 0 : if (OJPEGReadHeaderInfoSecStreamDqt(tif) == 0)
1571 0 : return (0);
1572 0 : break;
1573 0 : case JPEG_MARKER_DHT:
1574 0 : if (OJPEGReadHeaderInfoSecStreamDht(tif) == 0)
1575 0 : return (0);
1576 0 : break;
1577 0 : case JPEG_MARKER_SOF0:
1578 : case JPEG_MARKER_SOF1:
1579 : case JPEG_MARKER_SOF3:
1580 0 : if (OJPEGReadHeaderInfoSecStreamSof(tif, m) == 0)
1581 0 : return (0);
1582 0 : if (sp->subsamplingcorrect != 0)
1583 0 : return (1);
1584 0 : break;
1585 0 : case JPEG_MARKER_SOS:
1586 0 : if (sp->subsamplingcorrect != 0)
1587 0 : return (1);
1588 0 : assert(sp->plane_sample_offset == 0);
1589 0 : if (OJPEGReadHeaderInfoSecStreamSos(tif) == 0)
1590 0 : return (0);
1591 0 : break;
1592 0 : default:
1593 0 : TIFFErrorExtR(tif, module,
1594 : "Unknown marker type %" PRIu8 " in JPEG data", m);
1595 0 : return (0);
1596 : }
1597 0 : } while (m != JPEG_MARKER_SOS);
1598 2 : if (sp->subsamplingcorrect)
1599 1 : return (1);
1600 1 : if (sp->sof_log == 0)
1601 : {
1602 1 : if (OJPEGReadHeaderInfoSecTablesQTable(tif) == 0)
1603 0 : return (0);
1604 1 : sp->sof_marker_id = JPEG_MARKER_SOF0;
1605 4 : for (o = 0; o < sp->samples_per_pixel; o++)
1606 3 : sp->sof_c[o] = o;
1607 1 : sp->sof_hv[0] = ((sp->subsampling_hor << 4) | sp->subsampling_ver);
1608 3 : for (o = 1; o < sp->samples_per_pixel; o++)
1609 2 : sp->sof_hv[o] = 17;
1610 1 : sp->sof_x = sp->strile_width;
1611 1 : sp->sof_y = sp->strile_length_total;
1612 1 : sp->sof_log = 1;
1613 1 : if (OJPEGReadHeaderInfoSecTablesDcTable(tif) == 0)
1614 0 : return (0);
1615 1 : if (OJPEGReadHeaderInfoSecTablesAcTable(tif) == 0)
1616 0 : return (0);
1617 3 : for (o = 1; o < sp->samples_per_pixel; o++)
1618 2 : sp->sos_cs[o] = o;
1619 : }
1620 1 : return (1);
1621 : }
1622 :
1623 0 : static int OJPEGReadHeaderInfoSecStreamDri(TIFF *tif)
1624 : {
1625 : /* This could easily cause trouble in some cases... but no such cases have
1626 : occurred so far */
1627 : static const char module[] = "OJPEGReadHeaderInfoSecStreamDri";
1628 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1629 : uint16_t m;
1630 0 : if (OJPEGReadWord(sp, &m) == 0)
1631 0 : return (0);
1632 0 : if (m != 4)
1633 : {
1634 0 : TIFFErrorExtR(tif, module, "Corrupt DRI marker in JPEG data");
1635 0 : return (0);
1636 : }
1637 0 : if (OJPEGReadWord(sp, &m) == 0)
1638 0 : return (0);
1639 0 : sp->restart_interval = m;
1640 0 : return (1);
1641 : }
1642 :
1643 0 : static int OJPEGReadHeaderInfoSecStreamDqt(TIFF *tif)
1644 : {
1645 : /* this is a table marker, and it is to be saved as a whole for exact
1646 : * pushing on the jpeg stream later on */
1647 : static const char module[] = "OJPEGReadHeaderInfoSecStreamDqt";
1648 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1649 : uint16_t m;
1650 : uint32_t na;
1651 : uint8_t *nb;
1652 : uint8_t o;
1653 0 : if (OJPEGReadWord(sp, &m) == 0)
1654 0 : return (0);
1655 0 : if (m <= 2)
1656 : {
1657 0 : if (sp->subsamplingcorrect == 0)
1658 0 : TIFFErrorExtR(tif, module, "Corrupt DQT marker in JPEG data");
1659 0 : return (0);
1660 : }
1661 0 : if (sp->subsamplingcorrect != 0)
1662 0 : OJPEGReadSkip(sp, m - 2);
1663 : else
1664 : {
1665 0 : m -= 2;
1666 : do
1667 : {
1668 0 : if (m < 65)
1669 : {
1670 0 : TIFFErrorExtR(tif, module, "Corrupt DQT marker in JPEG data");
1671 0 : return (0);
1672 : }
1673 0 : na = sizeof(uint32_t) + 69;
1674 0 : nb = _TIFFmallocExt(tif, na);
1675 0 : if (nb == 0)
1676 : {
1677 0 : TIFFErrorExtR(tif, module, "Out of memory");
1678 0 : return (0);
1679 : }
1680 0 : *(uint32_t *)nb = na;
1681 0 : nb[sizeof(uint32_t)] = 255;
1682 0 : nb[sizeof(uint32_t) + 1] = JPEG_MARKER_DQT;
1683 0 : nb[sizeof(uint32_t) + 2] = 0;
1684 0 : nb[sizeof(uint32_t) + 3] = 67;
1685 0 : if (OJPEGReadBlock(sp, 65, &nb[sizeof(uint32_t) + 4]) == 0)
1686 : {
1687 0 : _TIFFfreeExt(tif, nb);
1688 0 : return (0);
1689 : }
1690 0 : o = nb[sizeof(uint32_t) + 4] & 15;
1691 0 : if (3 < o)
1692 : {
1693 0 : TIFFErrorExtR(tif, module, "Corrupt DQT marker in JPEG data");
1694 0 : _TIFFfreeExt(tif, nb);
1695 0 : return (0);
1696 : }
1697 0 : if (sp->qtable[o] != 0)
1698 0 : _TIFFfreeExt(tif, sp->qtable[o]);
1699 0 : sp->qtable[o] = nb;
1700 0 : m -= 65;
1701 0 : } while (m > 0);
1702 : }
1703 0 : return (1);
1704 : }
1705 :
1706 0 : static int OJPEGReadHeaderInfoSecStreamDht(TIFF *tif)
1707 : {
1708 : /* this is a table marker, and it is to be saved as a whole for exact
1709 : * pushing on the jpeg stream later on */
1710 : /* TODO: the following assumes there is only one table in this marker... but
1711 : * i'm not quite sure that assumption is guaranteed correct */
1712 : static const char module[] = "OJPEGReadHeaderInfoSecStreamDht";
1713 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1714 : uint16_t m;
1715 : uint32_t na;
1716 : uint8_t *nb;
1717 : uint8_t o;
1718 0 : if (OJPEGReadWord(sp, &m) == 0)
1719 0 : return (0);
1720 0 : if (m <= 2)
1721 : {
1722 0 : if (sp->subsamplingcorrect == 0)
1723 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1724 0 : return (0);
1725 : }
1726 0 : if (sp->subsamplingcorrect != 0)
1727 : {
1728 0 : OJPEGReadSkip(sp, m - 2);
1729 : }
1730 : else
1731 : {
1732 0 : na = sizeof(uint32_t) + 2 + m;
1733 0 : nb = _TIFFmallocExt(tif, na);
1734 0 : if (nb == 0)
1735 : {
1736 0 : TIFFErrorExtR(tif, module, "Out of memory");
1737 0 : return (0);
1738 : }
1739 0 : *(uint32_t *)nb = na;
1740 0 : nb[sizeof(uint32_t)] = 255;
1741 0 : nb[sizeof(uint32_t) + 1] = JPEG_MARKER_DHT;
1742 0 : nb[sizeof(uint32_t) + 2] = (m >> 8);
1743 0 : nb[sizeof(uint32_t) + 3] = (m & 255);
1744 0 : if (OJPEGReadBlock(sp, m - 2, &nb[sizeof(uint32_t) + 4]) == 0)
1745 : {
1746 0 : _TIFFfreeExt(tif, nb);
1747 0 : return (0);
1748 : }
1749 0 : o = nb[sizeof(uint32_t) + 4];
1750 0 : if ((o & 240) == 0)
1751 : {
1752 0 : if (3 < o)
1753 : {
1754 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1755 0 : _TIFFfreeExt(tif, nb);
1756 0 : return (0);
1757 : }
1758 0 : if (sp->dctable[o] != 0)
1759 0 : _TIFFfreeExt(tif, sp->dctable[o]);
1760 0 : sp->dctable[o] = nb;
1761 : }
1762 : else
1763 : {
1764 0 : if ((o & 240) != 16)
1765 : {
1766 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1767 0 : _TIFFfreeExt(tif, nb);
1768 0 : return (0);
1769 : }
1770 0 : o &= 15;
1771 0 : if (3 < o)
1772 : {
1773 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1774 0 : _TIFFfreeExt(tif, nb);
1775 0 : return (0);
1776 : }
1777 0 : if (sp->actable[o] != 0)
1778 0 : _TIFFfreeExt(tif, sp->actable[o]);
1779 0 : sp->actable[o] = nb;
1780 : }
1781 : }
1782 0 : return (1);
1783 : }
1784 :
1785 0 : static int OJPEGReadHeaderInfoSecStreamSof(TIFF *tif, uint8_t marker_id)
1786 : {
1787 : /* this marker needs to be checked, and part of its data needs to be saved
1788 : * for regeneration later on */
1789 : static const char module[] = "OJPEGReadHeaderInfoSecStreamSof";
1790 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1791 : uint16_t m;
1792 : uint16_t n;
1793 : uint8_t o;
1794 : uint16_t p;
1795 : uint16_t q;
1796 0 : if (sp->sof_log != 0)
1797 : {
1798 0 : TIFFErrorExtR(tif, module, "Corrupt JPEG data");
1799 0 : return (0);
1800 : }
1801 0 : if (sp->subsamplingcorrect == 0)
1802 0 : sp->sof_marker_id = marker_id;
1803 : /* Lf: data length */
1804 0 : if (OJPEGReadWord(sp, &m) == 0)
1805 0 : return (0);
1806 0 : if (m < 11)
1807 : {
1808 0 : if (sp->subsamplingcorrect == 0)
1809 0 : TIFFErrorExtR(tif, module, "Corrupt SOF marker in JPEG data");
1810 0 : return (0);
1811 : }
1812 0 : m -= 8;
1813 0 : if (m % 3 != 0)
1814 : {
1815 0 : if (sp->subsamplingcorrect == 0)
1816 0 : TIFFErrorExtR(tif, module, "Corrupt SOF marker in JPEG data");
1817 0 : return (0);
1818 : }
1819 0 : n = m / 3;
1820 0 : if (sp->subsamplingcorrect == 0)
1821 : {
1822 0 : if (n != sp->samples_per_pixel)
1823 : {
1824 0 : TIFFErrorExtR(
1825 : tif, module,
1826 : "JPEG compressed data indicates unexpected number of samples");
1827 0 : return (0);
1828 : }
1829 : }
1830 : /* P: Sample precision */
1831 0 : if (OJPEGReadByte(sp, &o) == 0)
1832 0 : return (0);
1833 0 : if (o != 8)
1834 : {
1835 0 : if (sp->subsamplingcorrect == 0)
1836 0 : TIFFErrorExtR(tif, module,
1837 : "JPEG compressed data indicates unexpected number of "
1838 : "bits per sample");
1839 0 : return (0);
1840 : }
1841 : /* Y: Number of lines, X: Number of samples per line */
1842 0 : if (sp->subsamplingcorrect)
1843 0 : OJPEGReadSkip(sp, 4);
1844 : else
1845 : {
1846 : /* Y: Number of lines */
1847 0 : if (OJPEGReadWord(sp, &p) == 0)
1848 0 : return (0);
1849 0 : if (((uint32_t)p < sp->image_length) &&
1850 0 : ((uint32_t)p < sp->strile_length_total))
1851 : {
1852 0 : TIFFErrorExtR(tif, module,
1853 : "JPEG compressed data indicates unexpected height");
1854 0 : return (0);
1855 : }
1856 0 : sp->sof_y = p;
1857 : /* X: Number of samples per line */
1858 0 : if (OJPEGReadWord(sp, &p) == 0)
1859 0 : return (0);
1860 0 : if (((uint32_t)p < sp->image_width) && ((uint32_t)p < sp->strile_width))
1861 : {
1862 0 : TIFFErrorExtR(tif, module,
1863 : "JPEG compressed data indicates unexpected width");
1864 0 : return (0);
1865 : }
1866 0 : if ((uint32_t)p > sp->strile_width)
1867 : {
1868 0 : TIFFErrorExtR(tif, module,
1869 : "JPEG compressed data image width exceeds expected "
1870 : "image width");
1871 0 : return (0);
1872 : }
1873 0 : sp->sof_x = p;
1874 : }
1875 : /* Nf: Number of image components in frame */
1876 0 : if (OJPEGReadByte(sp, &o) == 0)
1877 0 : return (0);
1878 0 : if (o != n)
1879 : {
1880 0 : if (sp->subsamplingcorrect == 0)
1881 0 : TIFFErrorExtR(tif, module, "Corrupt SOF marker in JPEG data");
1882 0 : return (0);
1883 : }
1884 : /* per component stuff */
1885 : /* TODO: double-check that flow implies that n cannot be as big as to make
1886 : * us overflow sof_c, sof_hv and sof_tq arrays */
1887 0 : for (q = 0; q < n; q++)
1888 : {
1889 : /* C: Component identifier */
1890 0 : if (OJPEGReadByte(sp, &o) == 0)
1891 0 : return (0);
1892 0 : if (sp->subsamplingcorrect == 0)
1893 0 : sp->sof_c[q] = o;
1894 : /* H: Horizontal sampling factor, and V: Vertical sampling factor */
1895 0 : if (OJPEGReadByte(sp, &o) == 0)
1896 0 : return (0);
1897 0 : if (sp->subsamplingcorrect != 0)
1898 : {
1899 0 : if (q == 0)
1900 : {
1901 0 : sp->subsampling_hor = (o >> 4);
1902 0 : sp->subsampling_ver = (o & 15);
1903 0 : if (((sp->subsampling_hor != 1) && (sp->subsampling_hor != 2) &&
1904 0 : (sp->subsampling_hor != 4)) ||
1905 0 : ((sp->subsampling_ver != 1) && (sp->subsampling_ver != 2) &&
1906 0 : (sp->subsampling_ver != 4)))
1907 0 : sp->subsampling_force_desubsampling_inside_decompression =
1908 : 1;
1909 : }
1910 : else
1911 : {
1912 0 : if (o != 17)
1913 0 : sp->subsampling_force_desubsampling_inside_decompression =
1914 : 1;
1915 : }
1916 : }
1917 : else
1918 : {
1919 0 : sp->sof_hv[q] = o;
1920 0 : if (sp->subsampling_force_desubsampling_inside_decompression == 0)
1921 : {
1922 0 : if (q == 0)
1923 : {
1924 0 : if (o != ((sp->subsampling_hor << 4) | sp->subsampling_ver))
1925 : {
1926 0 : TIFFErrorExtR(tif, module,
1927 : "JPEG compressed data indicates "
1928 : "unexpected subsampling values");
1929 0 : return (0);
1930 : }
1931 : }
1932 : else
1933 : {
1934 0 : if (o != 17)
1935 : {
1936 0 : TIFFErrorExtR(tif, module,
1937 : "JPEG compressed data indicates "
1938 : "unexpected subsampling values");
1939 0 : return (0);
1940 : }
1941 : }
1942 : }
1943 : }
1944 : /* Tq: Quantization table destination selector */
1945 0 : if (OJPEGReadByte(sp, &o) == 0)
1946 0 : return (0);
1947 0 : if (sp->subsamplingcorrect == 0)
1948 0 : sp->sof_tq[q] = o;
1949 : }
1950 0 : if (sp->subsamplingcorrect == 0)
1951 0 : sp->sof_log = 1;
1952 0 : return (1);
1953 : }
1954 :
1955 0 : static int OJPEGReadHeaderInfoSecStreamSos(TIFF *tif)
1956 : {
1957 : /* this marker needs to be checked, and part of its data needs to be saved
1958 : * for regeneration later on */
1959 : static const char module[] = "OJPEGReadHeaderInfoSecStreamSos";
1960 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1961 : uint16_t m;
1962 : uint8_t n;
1963 : uint8_t o;
1964 0 : assert(sp->subsamplingcorrect == 0);
1965 0 : if (sp->sof_log == 0)
1966 : {
1967 0 : TIFFErrorExtR(tif, module, "Corrupt SOS marker in JPEG data");
1968 0 : return (0);
1969 : }
1970 : /* Ls */
1971 0 : if (OJPEGReadWord(sp, &m) == 0)
1972 0 : return (0);
1973 0 : if (m != 6 + sp->samples_per_pixel_per_plane * 2)
1974 : {
1975 0 : TIFFErrorExtR(tif, module, "Corrupt SOS marker in JPEG data");
1976 0 : return (0);
1977 : }
1978 : /* Ns */
1979 0 : if (OJPEGReadByte(sp, &n) == 0)
1980 0 : return (0);
1981 0 : if (n != sp->samples_per_pixel_per_plane)
1982 : {
1983 0 : TIFFErrorExtR(tif, module, "Corrupt SOS marker in JPEG data");
1984 0 : return (0);
1985 : }
1986 : /* Cs, Td, and Ta */
1987 0 : for (o = 0; o < sp->samples_per_pixel_per_plane; o++)
1988 : {
1989 : /* Cs */
1990 0 : if (OJPEGReadByte(sp, &n) == 0)
1991 0 : return (0);
1992 0 : sp->sos_cs[sp->plane_sample_offset + o] = n;
1993 : /* Td and Ta */
1994 0 : if (OJPEGReadByte(sp, &n) == 0)
1995 0 : return (0);
1996 0 : sp->sos_tda[sp->plane_sample_offset + o] = n;
1997 : }
1998 : /* skip Ss, Se, Ah, en Al -> no check, as per Tom Lane recommendation, as
1999 : * per LibJpeg source */
2000 0 : OJPEGReadSkip(sp, 3);
2001 0 : return (1);
2002 : }
2003 :
2004 1 : static int OJPEGReadHeaderInfoSecTablesQTable(TIFF *tif)
2005 : {
2006 : static const char module[] = "OJPEGReadHeaderInfoSecTablesQTable";
2007 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2008 : uint8_t m;
2009 : uint8_t n;
2010 : uint32_t oa;
2011 : uint8_t *ob;
2012 : uint32_t p;
2013 1 : if (sp->qtable_offset[0] == 0)
2014 : {
2015 0 : TIFFErrorExtR(tif, module, "Missing JPEG tables");
2016 0 : return (0);
2017 : }
2018 1 : sp->in_buffer_file_pos_log = 0;
2019 4 : for (m = 0; m < sp->samples_per_pixel; m++)
2020 : {
2021 3 : if ((sp->qtable_offset[m] != 0) &&
2022 2 : ((m == 0) || (sp->qtable_offset[m] != sp->qtable_offset[m - 1])))
2023 : {
2024 4 : for (n = 0; n < m - 1; n++)
2025 : {
2026 1 : if (sp->qtable_offset[m] == sp->qtable_offset[n])
2027 : {
2028 0 : TIFFErrorExtR(tif, module, "Corrupt JpegQTables tag value");
2029 0 : return (0);
2030 : }
2031 : }
2032 3 : oa = sizeof(uint32_t) + 69;
2033 3 : ob = _TIFFmallocExt(tif, oa);
2034 3 : if (ob == 0)
2035 : {
2036 0 : TIFFErrorExtR(tif, module, "Out of memory");
2037 0 : return (0);
2038 : }
2039 3 : *(uint32_t *)ob = oa;
2040 3 : ob[sizeof(uint32_t)] = 255;
2041 3 : ob[sizeof(uint32_t) + 1] = JPEG_MARKER_DQT;
2042 3 : ob[sizeof(uint32_t) + 2] = 0;
2043 3 : ob[sizeof(uint32_t) + 3] = 67;
2044 3 : ob[sizeof(uint32_t) + 4] = m;
2045 3 : TIFFSeekFile(tif, sp->qtable_offset[m], SEEK_SET);
2046 3 : p = (uint32_t)TIFFReadFile(tif, &ob[sizeof(uint32_t) + 5], 64);
2047 3 : if (p != 64)
2048 : {
2049 0 : _TIFFfreeExt(tif, ob);
2050 0 : return (0);
2051 : }
2052 3 : if (sp->qtable[m] != 0)
2053 0 : _TIFFfreeExt(tif, sp->qtable[m]);
2054 3 : sp->qtable[m] = ob;
2055 3 : sp->sof_tq[m] = m;
2056 : }
2057 : else
2058 0 : sp->sof_tq[m] = sp->sof_tq[m - 1];
2059 : }
2060 1 : return (1);
2061 : }
2062 :
2063 1 : static int OJPEGReadHeaderInfoSecTablesDcTable(TIFF *tif)
2064 : {
2065 : static const char module[] = "OJPEGReadHeaderInfoSecTablesDcTable";
2066 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2067 : uint8_t m;
2068 : uint8_t n;
2069 : uint8_t o[16];
2070 : uint32_t p;
2071 : uint32_t q;
2072 : uint32_t ra;
2073 : uint8_t *rb;
2074 1 : if (sp->dctable_offset[0] == 0)
2075 : {
2076 0 : TIFFErrorExtR(tif, module, "Missing JPEG tables");
2077 0 : return (0);
2078 : }
2079 1 : sp->in_buffer_file_pos_log = 0;
2080 4 : for (m = 0; m < sp->samples_per_pixel; m++)
2081 : {
2082 3 : if ((sp->dctable_offset[m] != 0) &&
2083 2 : ((m == 0) || (sp->dctable_offset[m] != sp->dctable_offset[m - 1])))
2084 : {
2085 4 : for (n = 0; n < m - 1; n++)
2086 : {
2087 1 : if (sp->dctable_offset[m] == sp->dctable_offset[n])
2088 : {
2089 0 : TIFFErrorExtR(tif, module,
2090 : "Corrupt JpegDcTables tag value");
2091 0 : return (0);
2092 : }
2093 : }
2094 3 : TIFFSeekFile(tif, sp->dctable_offset[m], SEEK_SET);
2095 3 : p = (uint32_t)TIFFReadFile(tif, o, 16);
2096 3 : if (p != 16)
2097 0 : return (0);
2098 3 : q = 0;
2099 51 : for (n = 0; n < 16; n++)
2100 48 : q += o[n];
2101 3 : ra = sizeof(uint32_t) + 21 + q;
2102 3 : rb = _TIFFmallocExt(tif, ra);
2103 3 : if (rb == 0)
2104 : {
2105 0 : TIFFErrorExtR(tif, module, "Out of memory");
2106 0 : return (0);
2107 : }
2108 3 : *(uint32_t *)rb = ra;
2109 3 : rb[sizeof(uint32_t)] = 255;
2110 3 : rb[sizeof(uint32_t) + 1] = JPEG_MARKER_DHT;
2111 3 : rb[sizeof(uint32_t) + 2] = (uint8_t)((19 + q) >> 8);
2112 3 : rb[sizeof(uint32_t) + 3] = ((19 + q) & 255);
2113 3 : rb[sizeof(uint32_t) + 4] = m;
2114 51 : for (n = 0; n < 16; n++)
2115 48 : rb[sizeof(uint32_t) + 5 + n] = o[n];
2116 3 : p = (uint32_t)TIFFReadFile(tif, &(rb[sizeof(uint32_t) + 21]), q);
2117 3 : if (p != q)
2118 : {
2119 0 : _TIFFfreeExt(tif, rb);
2120 0 : return (0);
2121 : }
2122 3 : if (sp->dctable[m] != 0)
2123 0 : _TIFFfreeExt(tif, sp->dctable[m]);
2124 3 : sp->dctable[m] = rb;
2125 3 : sp->sos_tda[m] = (m << 4);
2126 : }
2127 : else
2128 0 : sp->sos_tda[m] = sp->sos_tda[m - 1];
2129 : }
2130 1 : return (1);
2131 : }
2132 :
2133 1 : static int OJPEGReadHeaderInfoSecTablesAcTable(TIFF *tif)
2134 : {
2135 : static const char module[] = "OJPEGReadHeaderInfoSecTablesAcTable";
2136 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2137 : uint8_t m;
2138 : uint8_t n;
2139 : uint8_t o[16];
2140 : uint32_t p;
2141 : uint32_t q;
2142 : uint32_t ra;
2143 : uint8_t *rb;
2144 1 : if (sp->actable_offset[0] == 0)
2145 : {
2146 0 : TIFFErrorExtR(tif, module, "Missing JPEG tables");
2147 0 : return (0);
2148 : }
2149 1 : sp->in_buffer_file_pos_log = 0;
2150 4 : for (m = 0; m < sp->samples_per_pixel; m++)
2151 : {
2152 3 : if ((sp->actable_offset[m] != 0) &&
2153 2 : ((m == 0) || (sp->actable_offset[m] != sp->actable_offset[m - 1])))
2154 : {
2155 4 : for (n = 0; n < m - 1; n++)
2156 : {
2157 1 : if (sp->actable_offset[m] == sp->actable_offset[n])
2158 : {
2159 0 : TIFFErrorExtR(tif, module,
2160 : "Corrupt JpegAcTables tag value");
2161 0 : return (0);
2162 : }
2163 : }
2164 3 : TIFFSeekFile(tif, sp->actable_offset[m], SEEK_SET);
2165 3 : p = (uint32_t)TIFFReadFile(tif, o, 16);
2166 3 : if (p != 16)
2167 0 : return (0);
2168 3 : q = 0;
2169 51 : for (n = 0; n < 16; n++)
2170 48 : q += o[n];
2171 3 : ra = sizeof(uint32_t) + 21 + q;
2172 3 : rb = _TIFFmallocExt(tif, ra);
2173 3 : if (rb == 0)
2174 : {
2175 0 : TIFFErrorExtR(tif, module, "Out of memory");
2176 0 : return (0);
2177 : }
2178 3 : *(uint32_t *)rb = ra;
2179 3 : rb[sizeof(uint32_t)] = 255;
2180 3 : rb[sizeof(uint32_t) + 1] = JPEG_MARKER_DHT;
2181 3 : rb[sizeof(uint32_t) + 2] = (uint8_t)((19 + q) >> 8);
2182 3 : rb[sizeof(uint32_t) + 3] = ((19 + q) & 255);
2183 3 : rb[sizeof(uint32_t) + 4] = (16 | m);
2184 51 : for (n = 0; n < 16; n++)
2185 48 : rb[sizeof(uint32_t) + 5 + n] = o[n];
2186 3 : p = (uint32_t)TIFFReadFile(tif, &(rb[sizeof(uint32_t) + 21]), q);
2187 3 : if (p != q)
2188 : {
2189 0 : _TIFFfreeExt(tif, rb);
2190 0 : return (0);
2191 : }
2192 3 : if (sp->actable[m] != 0)
2193 0 : _TIFFfreeExt(tif, sp->actable[m]);
2194 3 : sp->actable[m] = rb;
2195 3 : sp->sos_tda[m] = (sp->sos_tda[m] | m);
2196 : }
2197 : else
2198 0 : sp->sos_tda[m] = (sp->sos_tda[m] | (sp->sos_tda[m - 1] & 15));
2199 : }
2200 1 : return (1);
2201 : }
2202 :
2203 22 : static int OJPEGReadBufferFill(OJPEGState *sp)
2204 : {
2205 : uint16_t m;
2206 : tmsize_t n;
2207 : /* TODO: double-check: when subsamplingcorrect is set, no call to
2208 : * TIFFErrorExt or TIFFWarningExt should be made in any other case, seek or
2209 : * read errors should be passed through */
2210 : do
2211 : {
2212 22 : if (sp->in_buffer_file_togo != 0)
2213 : {
2214 6 : if (sp->in_buffer_file_pos_log == 0)
2215 : {
2216 3 : TIFFSeekFile(sp->tif, sp->in_buffer_file_pos, SEEK_SET);
2217 3 : sp->in_buffer_file_pos_log = 1;
2218 : }
2219 6 : m = OJPEG_BUFFER;
2220 6 : if ((uint64_t)m > sp->in_buffer_file_togo)
2221 1 : m = (uint16_t)sp->in_buffer_file_togo;
2222 6 : n = TIFFReadFile(sp->tif, sp->in_buffer, (tmsize_t)m);
2223 6 : if (n == 0)
2224 0 : return (0);
2225 6 : assert(n > 0);
2226 6 : assert(n <= OJPEG_BUFFER);
2227 6 : assert(n < 65536);
2228 6 : assert((uint64_t)n <= sp->in_buffer_file_togo);
2229 6 : m = (uint16_t)n;
2230 6 : sp->in_buffer_togo = m;
2231 6 : sp->in_buffer_cur = sp->in_buffer;
2232 6 : sp->in_buffer_file_togo -= m;
2233 6 : sp->in_buffer_file_pos += m;
2234 6 : break;
2235 : }
2236 16 : sp->in_buffer_file_pos_log = 0;
2237 16 : switch (sp->in_buffer_source)
2238 : {
2239 4 : case osibsNotSetYet:
2240 4 : if (sp->jpeg_interchange_format != 0)
2241 : {
2242 0 : sp->in_buffer_file_pos = sp->jpeg_interchange_format;
2243 0 : sp->in_buffer_file_togo =
2244 0 : sp->jpeg_interchange_format_length;
2245 : }
2246 4 : sp->in_buffer_source = osibsJpegInterchangeFormat;
2247 4 : break;
2248 4 : case osibsJpegInterchangeFormat:
2249 4 : sp->in_buffer_source = osibsStrile;
2250 4 : break;
2251 6 : case osibsStrile:
2252 6 : if (sp->in_buffer_next_strile == sp->in_buffer_strile_count)
2253 2 : sp->in_buffer_source = osibsEof;
2254 : else
2255 : {
2256 4 : int err = 0;
2257 4 : sp->in_buffer_file_pos = TIFFGetStrileOffsetWithErr(
2258 : sp->tif, sp->in_buffer_next_strile, &err);
2259 4 : if (err)
2260 0 : return 0;
2261 4 : if (sp->in_buffer_file_pos != 0)
2262 : {
2263 4 : uint64_t bytecount = TIFFGetStrileByteCountWithErr(
2264 : sp->tif, sp->in_buffer_next_strile, &err);
2265 4 : if (err)
2266 0 : return 0;
2267 4 : if (sp->in_buffer_file_pos >= sp->file_size)
2268 2 : sp->in_buffer_file_pos = 0;
2269 2 : else if (bytecount == 0)
2270 0 : sp->in_buffer_file_togo =
2271 0 : sp->file_size - sp->in_buffer_file_pos;
2272 : else
2273 : {
2274 2 : sp->in_buffer_file_togo = bytecount;
2275 2 : if (sp->in_buffer_file_togo == 0)
2276 0 : sp->in_buffer_file_pos = 0;
2277 2 : else if (sp->in_buffer_file_pos >
2278 2 : UINT64_MAX - sp->in_buffer_file_togo ||
2279 2 : sp->in_buffer_file_pos +
2280 2 : sp->in_buffer_file_togo >
2281 2 : sp->file_size)
2282 0 : sp->in_buffer_file_togo =
2283 0 : sp->file_size - sp->in_buffer_file_pos;
2284 : }
2285 : }
2286 4 : sp->in_buffer_next_strile++;
2287 : }
2288 6 : break;
2289 2 : default:
2290 2 : return (0);
2291 : }
2292 : } while (1);
2293 6 : return (1);
2294 : }
2295 :
2296 0 : static int OJPEGReadByte(OJPEGState *sp, uint8_t *byte)
2297 : {
2298 0 : if (sp->in_buffer_togo == 0)
2299 : {
2300 0 : if (OJPEGReadBufferFill(sp) == 0)
2301 0 : return (0);
2302 0 : assert(sp->in_buffer_togo > 0);
2303 : }
2304 0 : *byte = *(sp->in_buffer_cur);
2305 0 : sp->in_buffer_cur++;
2306 0 : sp->in_buffer_togo--;
2307 0 : return (1);
2308 : }
2309 :
2310 4 : static int OJPEGReadBytePeek(OJPEGState *sp, uint8_t *byte)
2311 : {
2312 4 : if (sp->in_buffer_togo == 0)
2313 : {
2314 4 : if (OJPEGReadBufferFill(sp) == 0)
2315 2 : return (0);
2316 2 : assert(sp->in_buffer_togo > 0);
2317 : }
2318 2 : *byte = *(sp->in_buffer_cur);
2319 2 : return (1);
2320 : }
2321 :
2322 0 : static void OJPEGReadByteAdvance(OJPEGState *sp)
2323 : {
2324 0 : assert(sp->in_buffer_togo > 0);
2325 0 : sp->in_buffer_cur++;
2326 0 : sp->in_buffer_togo--;
2327 0 : }
2328 :
2329 0 : static int OJPEGReadWord(OJPEGState *sp, uint16_t *word)
2330 : {
2331 : uint8_t m;
2332 0 : if (OJPEGReadByte(sp, &m) == 0)
2333 0 : return (0);
2334 0 : *word = (m << 8);
2335 0 : if (OJPEGReadByte(sp, &m) == 0)
2336 0 : return (0);
2337 0 : *word |= m;
2338 0 : return (1);
2339 : }
2340 :
2341 0 : static int OJPEGReadBlock(OJPEGState *sp, uint16_t len, void *mem)
2342 : {
2343 : uint16_t mlen;
2344 : uint8_t *mmem;
2345 : uint16_t n;
2346 0 : assert(len > 0);
2347 0 : mlen = len;
2348 0 : mmem = mem;
2349 : do
2350 : {
2351 0 : if (sp->in_buffer_togo == 0)
2352 : {
2353 0 : if (OJPEGReadBufferFill(sp) == 0)
2354 0 : return (0);
2355 0 : assert(sp->in_buffer_togo > 0);
2356 : }
2357 0 : n = mlen;
2358 0 : if (n > sp->in_buffer_togo)
2359 0 : n = sp->in_buffer_togo;
2360 0 : _TIFFmemcpy(mmem, sp->in_buffer_cur, n);
2361 0 : sp->in_buffer_cur += n;
2362 0 : sp->in_buffer_togo -= n;
2363 0 : mlen -= n;
2364 0 : mmem += n;
2365 0 : } while (mlen > 0);
2366 0 : return (1);
2367 : }
2368 :
2369 0 : static void OJPEGReadSkip(OJPEGState *sp, uint16_t len)
2370 : {
2371 : uint16_t m;
2372 : uint16_t n;
2373 0 : m = len;
2374 0 : n = m;
2375 0 : if (n > sp->in_buffer_togo)
2376 0 : n = sp->in_buffer_togo;
2377 0 : sp->in_buffer_cur += n;
2378 0 : sp->in_buffer_togo -= n;
2379 0 : m -= n;
2380 0 : if (m > 0)
2381 : {
2382 0 : assert(sp->in_buffer_togo == 0);
2383 0 : n = m;
2384 0 : if ((uint64_t)n > sp->in_buffer_file_togo)
2385 0 : n = (uint16_t)sp->in_buffer_file_togo;
2386 0 : sp->in_buffer_file_pos += n;
2387 0 : sp->in_buffer_file_togo -= n;
2388 0 : sp->in_buffer_file_pos_log = 0;
2389 : /* we don't skip past jpeginterchangeformat/strile block...
2390 : * if that is asked from us, we're dealing with totally bazurk
2391 : * data anyway, and we've not seen this happening on any
2392 : * testfile, so we might as well likely cause some other
2393 : * meaningless error to be passed at some later time
2394 : */
2395 : }
2396 0 : }
2397 :
2398 17 : static int OJPEGWriteStream(TIFF *tif, void **mem, uint32_t *len)
2399 : {
2400 17 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2401 17 : *len = 0;
2402 : do
2403 : {
2404 21 : assert(sp->out_state <= ososEoi);
2405 21 : switch (sp->out_state)
2406 : {
2407 1 : case ososSoi:
2408 1 : OJPEGWriteStreamSoi(tif, mem, len);
2409 1 : break;
2410 1 : case ososQTable0:
2411 1 : OJPEGWriteStreamQTable(tif, 0, mem, len);
2412 1 : break;
2413 1 : case ososQTable1:
2414 1 : OJPEGWriteStreamQTable(tif, 1, mem, len);
2415 1 : break;
2416 1 : case ososQTable2:
2417 1 : OJPEGWriteStreamQTable(tif, 2, mem, len);
2418 1 : break;
2419 1 : case ososQTable3:
2420 1 : OJPEGWriteStreamQTable(tif, 3, mem, len);
2421 1 : break;
2422 1 : case ososDcTable0:
2423 1 : OJPEGWriteStreamDcTable(tif, 0, mem, len);
2424 1 : break;
2425 1 : case ososDcTable1:
2426 1 : OJPEGWriteStreamDcTable(tif, 1, mem, len);
2427 1 : break;
2428 1 : case ososDcTable2:
2429 1 : OJPEGWriteStreamDcTable(tif, 2, mem, len);
2430 1 : break;
2431 1 : case ososDcTable3:
2432 1 : OJPEGWriteStreamDcTable(tif, 3, mem, len);
2433 1 : break;
2434 1 : case ososAcTable0:
2435 1 : OJPEGWriteStreamAcTable(tif, 0, mem, len);
2436 1 : break;
2437 1 : case ososAcTable1:
2438 1 : OJPEGWriteStreamAcTable(tif, 1, mem, len);
2439 1 : break;
2440 1 : case ososAcTable2:
2441 1 : OJPEGWriteStreamAcTable(tif, 2, mem, len);
2442 1 : break;
2443 1 : case ososAcTable3:
2444 1 : OJPEGWriteStreamAcTable(tif, 3, mem, len);
2445 1 : break;
2446 1 : case ososDri:
2447 1 : OJPEGWriteStreamDri(tif, mem, len);
2448 1 : break;
2449 1 : case ososSof:
2450 1 : OJPEGWriteStreamSof(tif, mem, len);
2451 1 : break;
2452 1 : case ososSos:
2453 1 : OJPEGWriteStreamSos(tif, mem, len);
2454 1 : break;
2455 4 : case ososCompressed:
2456 4 : if (OJPEGWriteStreamCompressed(tif, mem, len) == 0)
2457 0 : return (0);
2458 4 : break;
2459 0 : case ososRst:
2460 0 : OJPEGWriteStreamRst(tif, mem, len);
2461 0 : break;
2462 1 : case ososEoi:
2463 1 : OJPEGWriteStreamEoi(tif, mem, len);
2464 1 : break;
2465 : }
2466 21 : } while (*len == 0);
2467 17 : return (1);
2468 : }
2469 :
2470 1 : static void OJPEGWriteStreamSoi(TIFF *tif, void **mem, uint32_t *len)
2471 : {
2472 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2473 : assert(OJPEG_BUFFER >= 2);
2474 1 : sp->out_buffer[0] = 255;
2475 1 : sp->out_buffer[1] = JPEG_MARKER_SOI;
2476 1 : *len = 2;
2477 1 : *mem = (void *)sp->out_buffer;
2478 1 : sp->out_state++;
2479 1 : }
2480 :
2481 4 : static void OJPEGWriteStreamQTable(TIFF *tif, uint8_t table_index, void **mem,
2482 : uint32_t *len)
2483 : {
2484 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2485 4 : if (sp->qtable[table_index] != 0)
2486 : {
2487 3 : *mem = (void *)(sp->qtable[table_index] + sizeof(uint32_t));
2488 3 : *len = *((uint32_t *)sp->qtable[table_index]) - sizeof(uint32_t);
2489 : }
2490 4 : sp->out_state++;
2491 4 : }
2492 :
2493 4 : static void OJPEGWriteStreamDcTable(TIFF *tif, uint8_t table_index, void **mem,
2494 : uint32_t *len)
2495 : {
2496 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2497 4 : if (sp->dctable[table_index] != 0)
2498 : {
2499 3 : *mem = (void *)(sp->dctable[table_index] + sizeof(uint32_t));
2500 3 : *len = *((uint32_t *)sp->dctable[table_index]) - sizeof(uint32_t);
2501 : }
2502 4 : sp->out_state++;
2503 4 : }
2504 :
2505 4 : static void OJPEGWriteStreamAcTable(TIFF *tif, uint8_t table_index, void **mem,
2506 : uint32_t *len)
2507 : {
2508 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2509 4 : if (sp->actable[table_index] != 0)
2510 : {
2511 3 : *mem = (void *)(sp->actable[table_index] + sizeof(uint32_t));
2512 3 : *len = *((uint32_t *)sp->actable[table_index]) - sizeof(uint32_t);
2513 : }
2514 4 : sp->out_state++;
2515 4 : }
2516 :
2517 1 : static void OJPEGWriteStreamDri(TIFF *tif, void **mem, uint32_t *len)
2518 : {
2519 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2520 : assert(OJPEG_BUFFER >= 6);
2521 1 : if (sp->restart_interval != 0)
2522 : {
2523 0 : sp->out_buffer[0] = 255;
2524 0 : sp->out_buffer[1] = JPEG_MARKER_DRI;
2525 0 : sp->out_buffer[2] = 0;
2526 0 : sp->out_buffer[3] = 4;
2527 0 : sp->out_buffer[4] = (sp->restart_interval >> 8);
2528 0 : sp->out_buffer[5] = (sp->restart_interval & 255);
2529 0 : *len = 6;
2530 0 : *mem = (void *)sp->out_buffer;
2531 : }
2532 1 : sp->out_state++;
2533 1 : }
2534 :
2535 1 : static void OJPEGWriteStreamSof(TIFF *tif, void **mem, uint32_t *len)
2536 : {
2537 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2538 : uint8_t m;
2539 1 : assert(OJPEG_BUFFER >= 2 + 8 + sp->samples_per_pixel_per_plane * 3);
2540 1 : assert(255 >= 8 + sp->samples_per_pixel_per_plane * 3);
2541 1 : sp->out_buffer[0] = 255;
2542 1 : sp->out_buffer[1] = sp->sof_marker_id;
2543 : /* Lf */
2544 1 : sp->out_buffer[2] = 0;
2545 1 : sp->out_buffer[3] = 8 + sp->samples_per_pixel_per_plane * 3;
2546 : /* P */
2547 1 : sp->out_buffer[4] = 8;
2548 : /* Y */
2549 1 : sp->out_buffer[5] = (uint8_t)(sp->sof_y >> 8);
2550 1 : sp->out_buffer[6] = (sp->sof_y & 255);
2551 : /* X */
2552 1 : sp->out_buffer[7] = (uint8_t)(sp->sof_x >> 8);
2553 1 : sp->out_buffer[8] = (sp->sof_x & 255);
2554 : /* Nf */
2555 1 : sp->out_buffer[9] = sp->samples_per_pixel_per_plane;
2556 4 : for (m = 0; m < sp->samples_per_pixel_per_plane; m++)
2557 : {
2558 : /* C */
2559 3 : sp->out_buffer[10 + m * 3] = sp->sof_c[sp->plane_sample_offset + m];
2560 : /* H and V */
2561 3 : sp->out_buffer[10 + m * 3 + 1] =
2562 3 : sp->sof_hv[sp->plane_sample_offset + m];
2563 : /* Tq */
2564 3 : sp->out_buffer[10 + m * 3 + 2] =
2565 3 : sp->sof_tq[sp->plane_sample_offset + m];
2566 : }
2567 1 : *len = 10 + sp->samples_per_pixel_per_plane * 3;
2568 1 : *mem = (void *)sp->out_buffer;
2569 1 : sp->out_state++;
2570 1 : }
2571 :
2572 1 : static void OJPEGWriteStreamSos(TIFF *tif, void **mem, uint32_t *len)
2573 : {
2574 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2575 : uint8_t m;
2576 1 : assert(OJPEG_BUFFER >= 2 + 6 + sp->samples_per_pixel_per_plane * 2);
2577 1 : assert(255 >= 6 + sp->samples_per_pixel_per_plane * 2);
2578 1 : sp->out_buffer[0] = 255;
2579 1 : sp->out_buffer[1] = JPEG_MARKER_SOS;
2580 : /* Ls */
2581 1 : sp->out_buffer[2] = 0;
2582 1 : sp->out_buffer[3] = 6 + sp->samples_per_pixel_per_plane * 2;
2583 : /* Ns */
2584 1 : sp->out_buffer[4] = sp->samples_per_pixel_per_plane;
2585 4 : for (m = 0; m < sp->samples_per_pixel_per_plane; m++)
2586 : {
2587 : /* Cs */
2588 3 : sp->out_buffer[5 + m * 2] = sp->sos_cs[sp->plane_sample_offset + m];
2589 : /* Td and Ta */
2590 3 : sp->out_buffer[5 + m * 2 + 1] =
2591 3 : sp->sos_tda[sp->plane_sample_offset + m];
2592 : }
2593 : /* Ss */
2594 1 : sp->out_buffer[5 + sp->samples_per_pixel_per_plane * 2] = 0;
2595 : /* Se */
2596 1 : sp->out_buffer[5 + sp->samples_per_pixel_per_plane * 2 + 1] = 63;
2597 : /* Ah and Al */
2598 1 : sp->out_buffer[5 + sp->samples_per_pixel_per_plane * 2 + 2] = 0;
2599 1 : *len = 8 + sp->samples_per_pixel_per_plane * 2;
2600 1 : *mem = (void *)sp->out_buffer;
2601 1 : sp->out_state++;
2602 1 : }
2603 :
2604 4 : static int OJPEGWriteStreamCompressed(TIFF *tif, void **mem, uint32_t *len)
2605 : {
2606 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2607 4 : if (sp->in_buffer_togo == 0)
2608 : {
2609 4 : if (OJPEGReadBufferFill(sp) == 0)
2610 0 : return (0);
2611 4 : assert(sp->in_buffer_togo > 0);
2612 : }
2613 4 : *len = sp->in_buffer_togo;
2614 4 : *mem = (void *)sp->in_buffer_cur;
2615 4 : sp->in_buffer_togo = 0;
2616 4 : if (sp->in_buffer_file_togo == 0)
2617 : {
2618 1 : switch (sp->in_buffer_source)
2619 : {
2620 1 : case osibsStrile:
2621 1 : if (sp->in_buffer_next_strile < sp->in_buffer_strile_count)
2622 0 : sp->out_state = ososRst;
2623 : else
2624 1 : sp->out_state = ososEoi;
2625 1 : break;
2626 0 : case osibsEof:
2627 0 : sp->out_state = ososEoi;
2628 0 : break;
2629 0 : default:
2630 0 : break;
2631 : }
2632 3 : }
2633 4 : return (1);
2634 : }
2635 :
2636 0 : static void OJPEGWriteStreamRst(TIFF *tif, void **mem, uint32_t *len)
2637 : {
2638 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2639 : assert(OJPEG_BUFFER >= 2);
2640 0 : sp->out_buffer[0] = 255;
2641 0 : sp->out_buffer[1] = JPEG_MARKER_RST0 + sp->restart_index;
2642 0 : sp->restart_index++;
2643 0 : if (sp->restart_index == 8)
2644 0 : sp->restart_index = 0;
2645 0 : *len = 2;
2646 0 : *mem = (void *)sp->out_buffer;
2647 0 : sp->out_state = ososCompressed;
2648 0 : }
2649 :
2650 1 : static void OJPEGWriteStreamEoi(TIFF *tif, void **mem, uint32_t *len)
2651 : {
2652 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2653 : assert(OJPEG_BUFFER >= 2);
2654 1 : sp->out_buffer[0] = 255;
2655 1 : sp->out_buffer[1] = JPEG_MARKER_EOI;
2656 1 : *len = 2;
2657 1 : *mem = (void *)sp->out_buffer;
2658 1 : }
2659 :
2660 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2661 1 : static int jpeg_create_decompress_encap(OJPEGState *sp,
2662 : jpeg_decompress_struct *cinfo)
2663 : {
2664 1 : if (SETJMP(sp->exit_jmpbuf))
2665 0 : return 0;
2666 : else
2667 : {
2668 1 : jpeg_create_decompress(cinfo);
2669 1 : return 1;
2670 : }
2671 : }
2672 : #endif
2673 :
2674 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2675 1 : static int jpeg_read_header_encap(OJPEGState *sp, jpeg_decompress_struct *cinfo,
2676 : uint8_t require_image)
2677 : {
2678 1 : if (SETJMP(sp->exit_jmpbuf))
2679 0 : return 0;
2680 : else
2681 : {
2682 1 : jpeg_read_header(cinfo, require_image);
2683 1 : return 1;
2684 : }
2685 : }
2686 : #endif
2687 :
2688 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2689 1 : static int jpeg_start_decompress_encap(OJPEGState *sp,
2690 : jpeg_decompress_struct *cinfo)
2691 : {
2692 1 : if (SETJMP(sp->exit_jmpbuf))
2693 0 : return 0;
2694 : else
2695 : {
2696 1 : jpeg_start_decompress(cinfo);
2697 1 : return 1;
2698 : }
2699 : }
2700 : #endif
2701 :
2702 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2703 0 : static int jpeg_read_scanlines_encap(OJPEGState *sp,
2704 : jpeg_decompress_struct *cinfo,
2705 : void *scanlines, uint32_t max_lines)
2706 : {
2707 0 : if (SETJMP(sp->exit_jmpbuf))
2708 0 : return 0;
2709 : else
2710 : {
2711 0 : jpeg_read_scanlines(cinfo, scanlines, max_lines);
2712 0 : return 1;
2713 : }
2714 : }
2715 : #endif
2716 :
2717 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2718 14 : static int jpeg_read_raw_data_encap(OJPEGState *sp,
2719 : jpeg_decompress_struct *cinfo, void *data,
2720 : uint32_t max_lines)
2721 : {
2722 14 : if (SETJMP(sp->exit_jmpbuf))
2723 0 : return 0;
2724 : else
2725 : {
2726 14 : jpeg_read_raw_data(cinfo, data, max_lines);
2727 14 : return 1;
2728 : }
2729 : }
2730 : #endif
2731 :
2732 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2733 0 : static void jpeg_encap_unwind(TIFF *tif)
2734 : {
2735 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2736 0 : LONGJMP(sp->exit_jmpbuf, 1);
2737 : }
2738 : #endif
2739 :
2740 0 : static void OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct *cinfo)
2741 : {
2742 : char buffer[JMSG_LENGTH_MAX];
2743 0 : (*cinfo->err->format_message)(cinfo, buffer);
2744 0 : TIFFWarningExtR(((TIFF *)(cinfo->client_data)), "LibJpeg", "%s", buffer);
2745 0 : }
2746 :
2747 0 : static void OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct *cinfo)
2748 : {
2749 : char buffer[JMSG_LENGTH_MAX];
2750 0 : (*cinfo->err->format_message)(cinfo, buffer);
2751 0 : TIFFErrorExtR(((TIFF *)(cinfo->client_data)), "LibJpeg", "%s", buffer);
2752 0 : jpeg_encap_unwind((TIFF *)(cinfo->client_data));
2753 0 : }
2754 :
2755 1 : static void OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct *cinfo)
2756 : {
2757 : (void)cinfo;
2758 1 : }
2759 :
2760 : static boolean
2761 17 : OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct *cinfo)
2762 : {
2763 17 : TIFF *tif = (TIFF *)cinfo->client_data;
2764 17 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2765 17 : void *mem = 0;
2766 17 : uint32_t len = 0U;
2767 17 : if (OJPEGWriteStream(tif, &mem, &len) == 0)
2768 : {
2769 0 : TIFFErrorExtR(tif, "LibJpeg", "Premature end of JPEG data");
2770 0 : jpeg_encap_unwind(tif);
2771 : }
2772 17 : sp->libjpeg_jpeg_source_mgr.bytes_in_buffer = len;
2773 17 : sp->libjpeg_jpeg_source_mgr.next_input_byte = mem;
2774 17 : return (1);
2775 : }
2776 :
2777 : static void
2778 0 : OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct *cinfo,
2779 : long num_bytes)
2780 : {
2781 0 : TIFF *tif = (TIFF *)cinfo->client_data;
2782 : (void)num_bytes;
2783 0 : TIFFErrorExtR(tif, "LibJpeg", "Unexpected error");
2784 0 : jpeg_encap_unwind(tif);
2785 0 : }
2786 :
2787 : #ifdef _MSC_VER
2788 : #pragma warning(push)
2789 : #pragma warning(disable : 4702) /* unreachable code */
2790 : #endif
2791 : static boolean
2792 0 : OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct *cinfo,
2793 : int desired)
2794 : {
2795 0 : TIFF *tif = (TIFF *)cinfo->client_data;
2796 : (void)desired;
2797 0 : TIFFErrorExtR(tif, "LibJpeg", "Unexpected error");
2798 0 : jpeg_encap_unwind(tif);
2799 0 : return (0);
2800 : }
2801 : #ifdef _MSC_VER
2802 : #pragma warning(pop)
2803 : #endif
2804 :
2805 0 : static void OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct *cinfo)
2806 : {
2807 : (void)cinfo;
2808 0 : }
2809 :
2810 : #endif
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