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 : TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGINTERCHANGEFORMAT, TRUE, FALSE,
185 : "JpegInterchangeFormat", NULL},
186 : {TIFFTAG_JPEGIFBYTECOUNT, 1, 1, TIFF_LONG8, 0, TIFF_SETGET_UINT64,
187 : TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH, TRUE,
188 : FALSE, "JpegInterchangeFormatLength", NULL},
189 : {TIFFTAG_JPEGQTABLES, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG8, 0,
190 : TIFF_SETGET_C32_UINT64, TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGQTABLES,
191 : FALSE, TRUE, "JpegQTables", NULL},
192 : {TIFFTAG_JPEGDCTABLES, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG8, 0,
193 : TIFF_SETGET_C32_UINT64, TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGDCTABLES,
194 : FALSE, TRUE, "JpegDcTables", NULL},
195 : {TIFFTAG_JPEGACTABLES, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG8, 0,
196 : TIFF_SETGET_C32_UINT64, TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGACTABLES,
197 : FALSE, TRUE, "JpegAcTables", NULL},
198 : {TIFFTAG_JPEGPROC, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16,
199 : TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGPROC, FALSE, FALSE, "JpegProc",
200 : NULL},
201 : {TIFFTAG_JPEGRESTARTINTERVAL, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16,
202 : TIFF_SETGET_UNDEFINED, FIELD_OJPEG_JPEGRESTARTINTERVAL, FALSE, FALSE,
203 : "JpegRestartInterval", NULL},
204 : };
205 :
206 : #ifndef LIBJPEG_ENCAP_EXTERNAL
207 : #include <setjmp.h>
208 : #endif
209 :
210 : #include "jerror.h"
211 : #include "jpeglib.h"
212 :
213 : #ifndef TIFF_jpeg_source_mgr_defined
214 : #define TIFF_jpeg_source_mgr_defined
215 : typedef struct jpeg_source_mgr jpeg_source_mgr;
216 : #endif
217 :
218 : #ifndef TIFF_jpeg_error_mgr_defined
219 : #define TIFF_jpeg_error_mgr_defined
220 : typedef struct jpeg_error_mgr jpeg_error_mgr;
221 : #endif
222 :
223 : typedef struct jpeg_common_struct jpeg_common_struct;
224 : typedef struct jpeg_decompress_struct jpeg_decompress_struct;
225 :
226 : typedef enum
227 : {
228 : osibsNotSetYet,
229 : osibsJpegInterchangeFormat,
230 : osibsStrile,
231 : osibsEof
232 : } OJPEGStateInBufferSource;
233 :
234 : typedef enum
235 : {
236 : ososSoi,
237 : ososQTable0,
238 : ososQTable1,
239 : ososQTable2,
240 : ososQTable3,
241 : ososDcTable0,
242 : ososDcTable1,
243 : ososDcTable2,
244 : ososDcTable3,
245 : ososAcTable0,
246 : ososAcTable1,
247 : ososAcTable2,
248 : ososAcTable3,
249 : ososDri,
250 : ososSof,
251 : ososSos,
252 : ososCompressed,
253 : ososRst,
254 : ososEoi
255 : } OJPEGStateOutState;
256 :
257 : typedef struct
258 : {
259 : TIFF *tif;
260 : int decoder_ok;
261 : int error_in_raw_data_decoding;
262 : #ifndef LIBJPEG_ENCAP_EXTERNAL
263 : JMP_BUF exit_jmpbuf;
264 : #endif
265 : TIFFVGetMethod vgetparent;
266 : TIFFVSetMethod vsetparent;
267 : TIFFPrintMethod printdir;
268 : uint64_t file_size;
269 : uint32_t image_width;
270 : uint32_t image_length;
271 : uint32_t strile_width;
272 : uint32_t strile_length;
273 : uint32_t strile_length_total;
274 : uint8_t samples_per_pixel;
275 : uint8_t plane_sample_offset;
276 : uint8_t samples_per_pixel_per_plane;
277 : uint64_t jpeg_interchange_format;
278 : uint64_t jpeg_interchange_format_length;
279 : uint8_t jpeg_proc;
280 : uint8_t subsamplingcorrect;
281 : uint8_t subsamplingcorrect_done;
282 : uint8_t subsampling_tag;
283 : uint8_t subsampling_hor;
284 : uint8_t subsampling_ver;
285 : uint8_t subsampling_force_desubsampling_inside_decompression;
286 : uint8_t qtable_offset_count;
287 : uint8_t dctable_offset_count;
288 : uint8_t actable_offset_count;
289 : uint64_t qtable_offset[3];
290 : uint64_t dctable_offset[3];
291 : uint64_t actable_offset[3];
292 : uint8_t *qtable[4];
293 : uint8_t *dctable[4];
294 : uint8_t *actable[4];
295 : uint16_t restart_interval;
296 : uint8_t restart_index;
297 : uint8_t sof_log;
298 : uint8_t sof_marker_id;
299 : uint32_t sof_x;
300 : uint32_t sof_y;
301 : uint8_t sof_c[3];
302 : uint8_t sof_hv[3];
303 : uint8_t sof_tq[3];
304 : uint8_t sos_cs[3];
305 : uint8_t sos_tda[3];
306 : struct
307 : {
308 : uint8_t log;
309 : OJPEGStateInBufferSource in_buffer_source;
310 : uint32_t in_buffer_next_strile;
311 : uint64_t in_buffer_file_pos;
312 : uint64_t in_buffer_file_togo;
313 : } sos_end[3];
314 : uint8_t readheader_done;
315 : uint8_t writeheader_done;
316 : uint16_t write_cursample;
317 : uint32_t write_curstrile;
318 : uint8_t libjpeg_session_active;
319 : uint8_t libjpeg_jpeg_query_style;
320 : jpeg_error_mgr libjpeg_jpeg_error_mgr;
321 : jpeg_decompress_struct libjpeg_jpeg_decompress_struct;
322 : jpeg_source_mgr libjpeg_jpeg_source_mgr;
323 : uint8_t subsampling_convert_log;
324 : uint32_t subsampling_convert_ylinelen;
325 : uint32_t subsampling_convert_ylines;
326 : uint32_t subsampling_convert_clinelen;
327 : uint32_t subsampling_convert_clines;
328 : uint32_t subsampling_convert_ybuflen;
329 : uint32_t subsampling_convert_cbuflen;
330 : uint32_t subsampling_convert_ycbcrbuflen;
331 : uint8_t *subsampling_convert_ycbcrbuf;
332 : uint8_t *subsampling_convert_ybuf;
333 : uint8_t *subsampling_convert_cbbuf;
334 : uint8_t *subsampling_convert_crbuf;
335 : uint32_t subsampling_convert_ycbcrimagelen;
336 : uint8_t **subsampling_convert_ycbcrimage;
337 : uint32_t subsampling_convert_clinelenout;
338 : uint32_t subsampling_convert_state;
339 : uint32_t bytes_per_line; /* if the codec outputs subsampled data, a 'line'
340 : in bytes_per_line */
341 : uint32_t lines_per_strile; /* and lines_per_strile means subsampling_ver
342 : desubsampled rows */
343 : OJPEGStateInBufferSource in_buffer_source;
344 : uint32_t in_buffer_next_strile;
345 : uint32_t in_buffer_strile_count;
346 : uint64_t in_buffer_file_pos;
347 : uint8_t in_buffer_file_pos_log;
348 : uint64_t in_buffer_file_togo;
349 : uint16_t in_buffer_togo;
350 : uint8_t *in_buffer_cur;
351 : uint8_t in_buffer[OJPEG_BUFFER];
352 : OJPEGStateOutState out_state;
353 : uint8_t out_buffer[OJPEG_BUFFER];
354 : uint8_t *skip_buffer;
355 : } OJPEGState;
356 :
357 : static int OJPEGVGetField(TIFF *tif, uint32_t tag, va_list ap);
358 : static int OJPEGVSetField(TIFF *tif, uint32_t tag, va_list ap);
359 : static void OJPEGPrintDir(TIFF *tif, FILE *fd, long flags);
360 :
361 : static int OJPEGFixupTags(TIFF *tif);
362 : static int OJPEGSetupDecode(TIFF *tif);
363 : static int OJPEGPreDecode(TIFF *tif, uint16_t s);
364 : static int OJPEGPreDecodeSkipRaw(TIFF *tif);
365 : static int OJPEGPreDecodeSkipScanlines(TIFF *tif);
366 : static int OJPEGDecode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s);
367 : static int OJPEGDecodeRaw(TIFF *tif, uint8_t *buf, tmsize_t cc);
368 : static int OJPEGDecodeScanlines(TIFF *tif, uint8_t *buf, tmsize_t cc);
369 : static void OJPEGPostDecode(TIFF *tif, uint8_t *buf, tmsize_t cc);
370 : static int OJPEGSetupEncode(TIFF *tif);
371 : static int OJPEGPreEncode(TIFF *tif, uint16_t s);
372 : static int OJPEGEncode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s);
373 : static int OJPEGPostEncode(TIFF *tif);
374 : static void OJPEGCleanup(TIFF *tif);
375 :
376 : static void OJPEGSubsamplingCorrect(TIFF *tif);
377 : static int OJPEGReadHeaderInfo(TIFF *tif);
378 : static int OJPEGReadSecondarySos(TIFF *tif, uint16_t s);
379 : static int OJPEGWriteHeaderInfo(TIFF *tif);
380 : static void OJPEGLibjpegSessionAbort(TIFF *tif);
381 :
382 : static int OJPEGReadHeaderInfoSec(TIFF *tif);
383 : static int OJPEGReadHeaderInfoSecStreamDri(TIFF *tif);
384 : static int OJPEGReadHeaderInfoSecStreamDqt(TIFF *tif);
385 : static int OJPEGReadHeaderInfoSecStreamDht(TIFF *tif);
386 : static int OJPEGReadHeaderInfoSecStreamSof(TIFF *tif, uint8_t marker_id);
387 : static int OJPEGReadHeaderInfoSecStreamSos(TIFF *tif);
388 : static int OJPEGReadHeaderInfoSecTablesQTable(TIFF *tif);
389 : static int OJPEGReadHeaderInfoSecTablesDcTable(TIFF *tif);
390 : static int OJPEGReadHeaderInfoSecTablesAcTable(TIFF *tif);
391 :
392 : static int OJPEGReadBufferFill(OJPEGState *sp);
393 : static int OJPEGReadByte(OJPEGState *sp, uint8_t *byte);
394 : static int OJPEGReadBytePeek(OJPEGState *sp, uint8_t *byte);
395 : static void OJPEGReadByteAdvance(OJPEGState *sp);
396 : static int OJPEGReadWord(OJPEGState *sp, uint16_t *word);
397 : static int OJPEGReadBlock(OJPEGState *sp, uint16_t len, void *mem);
398 : static void OJPEGReadSkip(OJPEGState *sp, uint16_t len);
399 :
400 : static int OJPEGWriteStream(TIFF *tif, void **mem, uint32_t *len);
401 : static void OJPEGWriteStreamSoi(TIFF *tif, void **mem, uint32_t *len);
402 : static void OJPEGWriteStreamQTable(TIFF *tif, uint8_t table_index, void **mem,
403 : uint32_t *len);
404 : static void OJPEGWriteStreamDcTable(TIFF *tif, uint8_t table_index, void **mem,
405 : uint32_t *len);
406 : static void OJPEGWriteStreamAcTable(TIFF *tif, uint8_t table_index, void **mem,
407 : uint32_t *len);
408 : static void OJPEGWriteStreamDri(TIFF *tif, void **mem, uint32_t *len);
409 : static void OJPEGWriteStreamSof(TIFF *tif, void **mem, uint32_t *len);
410 : static void OJPEGWriteStreamSos(TIFF *tif, void **mem, uint32_t *len);
411 : static int OJPEGWriteStreamCompressed(TIFF *tif, void **mem, uint32_t *len);
412 : static void OJPEGWriteStreamRst(TIFF *tif, void **mem, uint32_t *len);
413 : static void OJPEGWriteStreamEoi(TIFF *tif, void **mem, uint32_t *len);
414 :
415 : #ifdef LIBJPEG_ENCAP_EXTERNAL
416 : extern int jpeg_create_decompress_encap(OJPEGState *sp,
417 : jpeg_decompress_struct *cinfo);
418 : extern int jpeg_read_header_encap(OJPEGState *sp, jpeg_decompress_struct *cinfo,
419 : uint8_t require_image);
420 : extern int jpeg_start_decompress_encap(OJPEGState *sp,
421 : jpeg_decompress_struct *cinfo);
422 : extern int jpeg_read_scanlines_encap(OJPEGState *sp,
423 : jpeg_decompress_struct *cinfo,
424 : void *scanlines, uint32_t max_lines);
425 : extern int jpeg_read_raw_data_encap(OJPEGState *sp,
426 : jpeg_decompress_struct *cinfo, void *data,
427 : uint32_t max_lines);
428 : extern void jpeg_encap_unwind(TIFF *tif);
429 : #else
430 : static int jpeg_create_decompress_encap(OJPEGState *sp,
431 : jpeg_decompress_struct *j);
432 : static int jpeg_read_header_encap(OJPEGState *sp, jpeg_decompress_struct *cinfo,
433 : uint8_t require_image);
434 : static int jpeg_start_decompress_encap(OJPEGState *sp,
435 : jpeg_decompress_struct *cinfo);
436 : static int jpeg_read_scanlines_encap(OJPEGState *sp,
437 : jpeg_decompress_struct *cinfo,
438 : void *scanlines, uint32_t max_lines);
439 : static int jpeg_read_raw_data_encap(OJPEGState *sp,
440 : jpeg_decompress_struct *cinfo, void *data,
441 : uint32_t max_lines);
442 : static void jpeg_encap_unwind(TIFF *tif);
443 : #endif
444 :
445 : static void OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct *cinfo);
446 : static void OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct *cinfo);
447 : static void OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct *cinfo);
448 : static boolean
449 : OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct *cinfo);
450 : static void
451 : OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct *cinfo,
452 : long num_bytes);
453 : static boolean
454 : OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct *cinfo,
455 : int desired);
456 : static void OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct *cinfo);
457 :
458 2 : int TIFFInitOJPEG(TIFF *tif, int scheme)
459 : {
460 : static const char module[] = "TIFFInitOJPEG";
461 : OJPEGState *sp;
462 :
463 : (void)scheme;
464 2 : assert(scheme == COMPRESSION_OJPEG);
465 :
466 : /*
467 : * Merge codec-specific tag information.
468 : */
469 2 : if (!_TIFFMergeFields(tif, ojpegFields, TIFFArrayCount(ojpegFields)))
470 : {
471 0 : TIFFErrorExtR(tif, module,
472 : "Merging Old JPEG codec-specific tags failed");
473 0 : return 0;
474 : }
475 :
476 : /* state block */
477 2 : sp = _TIFFmallocExt(tif, sizeof(OJPEGState));
478 2 : if (sp == NULL)
479 : {
480 0 : TIFFErrorExtR(tif, module, "No space for OJPEG state block");
481 0 : return (0);
482 : }
483 2 : _TIFFmemset(sp, 0, sizeof(OJPEGState));
484 2 : sp->tif = tif;
485 2 : sp->jpeg_proc = 1;
486 2 : sp->subsampling_hor = 2;
487 2 : sp->subsampling_ver = 2;
488 2 : TIFFSetField(tif, TIFFTAG_YCBCRSUBSAMPLING, 2, 2);
489 : /* tif codec methods */
490 2 : tif->tif_fixuptags = OJPEGFixupTags;
491 2 : tif->tif_setupdecode = OJPEGSetupDecode;
492 2 : tif->tif_predecode = OJPEGPreDecode;
493 2 : tif->tif_postdecode = OJPEGPostDecode;
494 2 : tif->tif_decoderow = OJPEGDecode;
495 2 : tif->tif_decodestrip = OJPEGDecode;
496 2 : tif->tif_decodetile = OJPEGDecode;
497 2 : tif->tif_setupencode = OJPEGSetupEncode;
498 2 : tif->tif_preencode = OJPEGPreEncode;
499 2 : tif->tif_postencode = OJPEGPostEncode;
500 2 : tif->tif_encoderow = OJPEGEncode;
501 2 : tif->tif_encodestrip = OJPEGEncode;
502 2 : tif->tif_encodetile = OJPEGEncode;
503 2 : tif->tif_cleanup = OJPEGCleanup;
504 2 : tif->tif_data = (uint8_t *)sp;
505 : /* tif tag methods */
506 2 : sp->vgetparent = tif->tif_tagmethods.vgetfield;
507 2 : tif->tif_tagmethods.vgetfield = OJPEGVGetField;
508 2 : sp->vsetparent = tif->tif_tagmethods.vsetfield;
509 2 : tif->tif_tagmethods.vsetfield = OJPEGVSetField;
510 2 : sp->printdir = tif->tif_tagmethods.printdir;
511 2 : tif->tif_tagmethods.printdir = OJPEGPrintDir;
512 : /* Some OJPEG files don't have strip or tile offsets or bytecounts tags.
513 : Some others do, but have totally meaningless or corrupt values
514 : in these tags. In these cases, the JpegInterchangeFormat stream is
515 : reliable. In any case, this decoder reads the compressed data itself,
516 : from the most reliable locations, and we need to notify encapsulating
517 : LibTiff not to read raw strips or tiles for us. */
518 2 : tif->tif_flags |= TIFF_NOREADRAW;
519 2 : return (1);
520 : }
521 :
522 96 : static int OJPEGVGetField(TIFF *tif, uint32_t tag, va_list ap)
523 : {
524 96 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
525 96 : switch (tag)
526 : {
527 0 : case TIFFTAG_JPEGIFOFFSET:
528 0 : *va_arg(ap, uint64_t *) = (uint64_t)sp->jpeg_interchange_format;
529 0 : break;
530 0 : case TIFFTAG_JPEGIFBYTECOUNT:
531 0 : *va_arg(ap, uint64_t *) =
532 0 : (uint64_t)sp->jpeg_interchange_format_length;
533 0 : break;
534 8 : case TIFFTAG_YCBCRSUBSAMPLING:
535 8 : if (sp->subsamplingcorrect_done == 0)
536 2 : OJPEGSubsamplingCorrect(tif);
537 8 : *va_arg(ap, uint16_t *) = (uint16_t)sp->subsampling_hor;
538 8 : *va_arg(ap, uint16_t *) = (uint16_t)sp->subsampling_ver;
539 8 : break;
540 0 : case TIFFTAG_JPEGQTABLES:
541 0 : *va_arg(ap, uint32_t *) = (uint32_t)sp->qtable_offset_count;
542 0 : *va_arg(ap, const void **) = (const void *)sp->qtable_offset;
543 0 : break;
544 0 : case TIFFTAG_JPEGDCTABLES:
545 0 : *va_arg(ap, uint32_t *) = (uint32_t)sp->dctable_offset_count;
546 0 : *va_arg(ap, const void **) = (const void *)sp->dctable_offset;
547 0 : break;
548 0 : case TIFFTAG_JPEGACTABLES:
549 0 : *va_arg(ap, uint32_t *) = (uint32_t)sp->actable_offset_count;
550 0 : *va_arg(ap, const void **) = (const void *)sp->actable_offset;
551 0 : break;
552 0 : case TIFFTAG_JPEGPROC:
553 0 : *va_arg(ap, uint16_t *) = (uint16_t)sp->jpeg_proc;
554 0 : break;
555 0 : case TIFFTAG_JPEGRESTARTINTERVAL:
556 0 : *va_arg(ap, uint16_t *) = sp->restart_interval;
557 0 : break;
558 88 : default:
559 88 : return (*sp->vgetparent)(tif, tag, ap);
560 : }
561 8 : return (1);
562 : }
563 :
564 34 : static int OJPEGVSetField(TIFF *tif, uint32_t tag, va_list ap)
565 : {
566 : static const char module[] = "OJPEGVSetField";
567 34 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
568 : uint32_t ma;
569 : uint64_t *mb;
570 : uint32_t n;
571 : const TIFFField *fip;
572 :
573 34 : switch (tag)
574 : {
575 0 : case TIFFTAG_JPEGIFOFFSET:
576 0 : sp->jpeg_interchange_format = (uint64_t)va_arg(ap, uint64_t);
577 0 : break;
578 0 : case TIFFTAG_JPEGIFBYTECOUNT:
579 0 : sp->jpeg_interchange_format_length = (uint64_t)va_arg(ap, uint64_t);
580 0 : break;
581 2 : case TIFFTAG_YCBCRSUBSAMPLING:
582 2 : sp->subsampling_tag = 1;
583 2 : sp->subsampling_hor = (uint8_t)va_arg(ap, uint16_vap);
584 2 : sp->subsampling_ver = (uint8_t)va_arg(ap, uint16_vap);
585 2 : tif->tif_dir.td_ycbcrsubsampling[0] = sp->subsampling_hor;
586 2 : tif->tif_dir.td_ycbcrsubsampling[1] = sp->subsampling_ver;
587 2 : break;
588 2 : case TIFFTAG_JPEGQTABLES:
589 2 : ma = (uint32_t)va_arg(ap, uint32_t);
590 2 : if (ma != 0)
591 : {
592 2 : if (ma > 3)
593 : {
594 0 : TIFFErrorExtR(tif, module,
595 : "JpegQTables tag has incorrect count");
596 0 : return (0);
597 : }
598 2 : sp->qtable_offset_count = (uint8_t)ma;
599 2 : mb = (uint64_t *)va_arg(ap, uint64_t *);
600 8 : for (n = 0; n < ma; n++)
601 6 : sp->qtable_offset[n] = mb[n];
602 : }
603 2 : break;
604 2 : case TIFFTAG_JPEGDCTABLES:
605 2 : ma = (uint32_t)va_arg(ap, uint32_t);
606 2 : if (ma != 0)
607 : {
608 2 : if (ma > 3)
609 : {
610 0 : TIFFErrorExtR(tif, module,
611 : "JpegDcTables tag has incorrect count");
612 0 : return (0);
613 : }
614 2 : sp->dctable_offset_count = (uint8_t)ma;
615 2 : mb = (uint64_t *)va_arg(ap, uint64_t *);
616 8 : for (n = 0; n < ma; n++)
617 6 : sp->dctable_offset[n] = mb[n];
618 : }
619 2 : break;
620 2 : case TIFFTAG_JPEGACTABLES:
621 2 : ma = (uint32_t)va_arg(ap, uint32_t);
622 2 : if (ma != 0)
623 : {
624 2 : if (ma > 3)
625 : {
626 0 : TIFFErrorExtR(tif, module,
627 : "JpegAcTables tag has incorrect count");
628 0 : return (0);
629 : }
630 2 : sp->actable_offset_count = (uint8_t)ma;
631 2 : mb = (uint64_t *)va_arg(ap, uint64_t *);
632 8 : for (n = 0; n < ma; n++)
633 6 : sp->actable_offset[n] = mb[n];
634 : }
635 2 : break;
636 2 : case TIFFTAG_JPEGPROC:
637 2 : sp->jpeg_proc = (uint8_t)va_arg(ap, uint16_vap);
638 2 : break;
639 0 : case TIFFTAG_JPEGRESTARTINTERVAL:
640 0 : sp->restart_interval = (uint16_t)va_arg(ap, uint16_vap);
641 0 : break;
642 24 : default:
643 24 : return (*sp->vsetparent)(tif, tag, ap);
644 : }
645 10 : fip = TIFFFieldWithTag(tif, tag);
646 10 : if (fip == NULL) /* shouldn't happen */
647 0 : return (0);
648 10 : TIFFSetFieldBit(tif, fip->field_bit);
649 10 : tif->tif_flags |= TIFF_DIRTYDIRECT;
650 10 : return (1);
651 : }
652 :
653 0 : static void OJPEGPrintDir(TIFF *tif, FILE *fd, long flags)
654 : {
655 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
656 : uint8_t m;
657 : (void)flags;
658 0 : assert(sp != NULL);
659 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGINTERCHANGEFORMAT))
660 0 : fprintf(fd, " JpegInterchangeFormat: %" PRIu64 "\n",
661 0 : (uint64_t)sp->jpeg_interchange_format);
662 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH))
663 0 : fprintf(fd, " JpegInterchangeFormatLength: %" PRIu64 "\n",
664 0 : (uint64_t)sp->jpeg_interchange_format_length);
665 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGQTABLES))
666 : {
667 0 : fprintf(fd, " JpegQTables:");
668 0 : for (m = 0; m < sp->qtable_offset_count; m++)
669 0 : fprintf(fd, " %" PRIu64, (uint64_t)sp->qtable_offset[m]);
670 0 : fprintf(fd, "\n");
671 : }
672 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGDCTABLES))
673 : {
674 0 : fprintf(fd, " JpegDcTables:");
675 0 : for (m = 0; m < sp->dctable_offset_count; m++)
676 0 : fprintf(fd, " %" PRIu64, (uint64_t)sp->dctable_offset[m]);
677 0 : fprintf(fd, "\n");
678 : }
679 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGACTABLES))
680 : {
681 0 : fprintf(fd, " JpegAcTables:");
682 0 : for (m = 0; m < sp->actable_offset_count; m++)
683 0 : fprintf(fd, " %" PRIu64, (uint64_t)sp->actable_offset[m]);
684 0 : fprintf(fd, "\n");
685 : }
686 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGPROC))
687 0 : fprintf(fd, " JpegProc: %" PRIu8 "\n", sp->jpeg_proc);
688 0 : if (TIFFFieldSet(tif, FIELD_OJPEG_JPEGRESTARTINTERVAL))
689 0 : fprintf(fd, " JpegRestartInterval: %" PRIu16 "\n",
690 0 : sp->restart_interval);
691 0 : if (sp->printdir)
692 0 : (*sp->printdir)(tif, fd, flags);
693 0 : }
694 :
695 2 : static int OJPEGFixupTags(TIFF *tif)
696 : {
697 : (void)tif;
698 2 : return (1);
699 : }
700 :
701 2 : static int OJPEGSetupDecode(TIFF *tif)
702 : {
703 : static const char module[] = "OJPEGSetupDecode";
704 2 : TIFFWarningExtR(tif, module,
705 : "Deprecated and troublesome old-style JPEG compression "
706 : "mode, please convert to new-style JPEG compression and "
707 : "notify vendor of writing software");
708 2 : return (1);
709 : }
710 :
711 2 : static int OJPEGPreDecode(TIFF *tif, uint16_t s)
712 : {
713 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
714 : uint32_t m;
715 2 : if (sp->subsamplingcorrect_done == 0)
716 0 : OJPEGSubsamplingCorrect(tif);
717 2 : if (sp->readheader_done == 0)
718 : {
719 2 : if (OJPEGReadHeaderInfo(tif) == 0)
720 1 : return (0);
721 : }
722 1 : if (sp->sos_end[s].log == 0)
723 : {
724 0 : if (OJPEGReadSecondarySos(tif, s) == 0)
725 0 : return (0);
726 : }
727 1 : if (isTiled(tif))
728 1 : m = tif->tif_curtile;
729 : else
730 0 : m = tif->tif_curstrip;
731 1 : if ((sp->writeheader_done != 0) &&
732 0 : ((sp->write_cursample != s) || (sp->write_curstrile > m)))
733 : {
734 0 : if (sp->libjpeg_session_active != 0)
735 0 : OJPEGLibjpegSessionAbort(tif);
736 0 : sp->writeheader_done = 0;
737 : }
738 1 : if (sp->writeheader_done == 0)
739 : {
740 1 : sp->plane_sample_offset = (uint8_t)s;
741 1 : sp->write_cursample = s;
742 1 : sp->write_curstrile = s * tif->tif_dir.td_stripsperimage;
743 1 : if ((sp->in_buffer_file_pos_log == 0) ||
744 0 : (sp->in_buffer_file_pos - sp->in_buffer_togo !=
745 0 : sp->sos_end[s].in_buffer_file_pos))
746 : {
747 1 : sp->in_buffer_source = sp->sos_end[s].in_buffer_source;
748 1 : sp->in_buffer_next_strile = sp->sos_end[s].in_buffer_next_strile;
749 1 : sp->in_buffer_file_pos = sp->sos_end[s].in_buffer_file_pos;
750 1 : sp->in_buffer_file_pos_log = 0;
751 1 : sp->in_buffer_file_togo = sp->sos_end[s].in_buffer_file_togo;
752 1 : sp->in_buffer_togo = 0;
753 1 : sp->in_buffer_cur = 0;
754 : }
755 1 : if (OJPEGWriteHeaderInfo(tif) == 0)
756 0 : return (0);
757 : }
758 :
759 1 : sp->subsampling_convert_state = 0;
760 :
761 1 : while (sp->write_curstrile < m)
762 : {
763 0 : if (sp->libjpeg_jpeg_query_style == 0)
764 : {
765 0 : if (OJPEGPreDecodeSkipRaw(tif) == 0)
766 0 : return (0);
767 : }
768 : else
769 : {
770 0 : if (OJPEGPreDecodeSkipScanlines(tif) == 0)
771 0 : return (0);
772 : }
773 0 : sp->write_curstrile++;
774 : }
775 1 : sp->decoder_ok = 1;
776 1 : return (1);
777 : }
778 :
779 0 : static int OJPEGPreDecodeSkipRaw(TIFF *tif)
780 : {
781 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
782 : uint32_t m;
783 0 : m = sp->lines_per_strile;
784 0 : if (sp->subsampling_convert_state != 0)
785 : {
786 0 : if (sp->subsampling_convert_clines - sp->subsampling_convert_state >= m)
787 : {
788 0 : sp->subsampling_convert_state += m;
789 0 : if (sp->subsampling_convert_state == sp->subsampling_convert_clines)
790 0 : sp->subsampling_convert_state = 0;
791 0 : return (1);
792 : }
793 0 : m -= sp->subsampling_convert_clines - sp->subsampling_convert_state;
794 0 : sp->subsampling_convert_state = 0;
795 0 : sp->error_in_raw_data_decoding = 0;
796 : }
797 0 : while (m >= sp->subsampling_convert_clines)
798 : {
799 0 : if (jpeg_read_raw_data_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
800 0 : sp->subsampling_convert_ycbcrimage,
801 0 : sp->subsampling_ver * 8) == 0)
802 0 : return (0);
803 0 : m -= sp->subsampling_convert_clines;
804 : }
805 0 : if (m > 0)
806 : {
807 0 : if (jpeg_read_raw_data_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
808 0 : sp->subsampling_convert_ycbcrimage,
809 0 : sp->subsampling_ver * 8) == 0)
810 0 : return (0);
811 0 : sp->subsampling_convert_state = m;
812 : }
813 0 : return (1);
814 : }
815 :
816 0 : static int OJPEGPreDecodeSkipScanlines(TIFF *tif)
817 : {
818 : static const char module[] = "OJPEGPreDecodeSkipScanlines";
819 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
820 : uint32_t m;
821 0 : if (sp->skip_buffer == NULL)
822 : {
823 0 : sp->skip_buffer = _TIFFmallocExt(tif, sp->bytes_per_line);
824 0 : if (sp->skip_buffer == NULL)
825 : {
826 0 : TIFFErrorExtR(tif, module, "Out of memory");
827 0 : return (0);
828 : }
829 : }
830 0 : for (m = 0; m < sp->lines_per_strile; m++)
831 : {
832 0 : if (jpeg_read_scanlines_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
833 0 : &sp->skip_buffer, 1) == 0)
834 0 : return (0);
835 : }
836 0 : return (1);
837 : }
838 :
839 1 : static int OJPEGDecode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s)
840 : {
841 : static const char module[] = "OJPEGDecode";
842 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
843 : (void)s;
844 1 : if (!sp->decoder_ok)
845 : {
846 0 : memset(buf, 0, (size_t)cc);
847 0 : TIFFErrorExtR(tif, module,
848 : "Cannot decode: decoder not correctly initialized");
849 0 : return 0;
850 : }
851 1 : if (sp->libjpeg_session_active == 0)
852 : {
853 0 : memset(buf, 0, (size_t)cc);
854 : /* This should normally not happen, except that it does when */
855 : /* using TIFFReadScanline() which calls OJPEGPostDecode() for */
856 : /* each scanline, which assumes that a whole strile was read */
857 : /* and may thus incorrectly consider it has read the whole image,
858 : * causing */
859 : /* OJPEGLibjpegSessionAbort() to be called prematurely. */
860 : /* Triggered by https://gitlab.com/libtiff/libtiff/-/issues/337 */
861 0 : TIFFErrorExtR(tif, module,
862 : "Cannot decode: libjpeg_session_active == 0");
863 0 : return 0;
864 : }
865 1 : if (sp->error_in_raw_data_decoding)
866 : {
867 0 : memset(buf, 0, (size_t)cc);
868 0 : return 0;
869 : }
870 1 : if (sp->libjpeg_jpeg_query_style == 0)
871 : {
872 1 : if (OJPEGDecodeRaw(tif, buf, cc) == 0)
873 : {
874 0 : memset(buf, 0, (size_t)cc);
875 0 : return (0);
876 : }
877 : }
878 : else
879 : {
880 0 : if (OJPEGDecodeScanlines(tif, buf, cc) == 0)
881 : {
882 0 : memset(buf, 0, (size_t)cc);
883 0 : return (0);
884 : }
885 : }
886 1 : return (1);
887 : }
888 :
889 1 : static int OJPEGDecodeRaw(TIFF *tif, uint8_t *buf, tmsize_t cc)
890 : {
891 : static const char module[] = "OJPEGDecodeRaw";
892 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
893 : uint8_t *m;
894 : tmsize_t n;
895 : uint8_t *oy;
896 : uint8_t *ocb;
897 : uint8_t *ocr;
898 : uint8_t *p;
899 : uint32_t q;
900 : uint8_t *r;
901 : uint8_t sx, sy;
902 1 : if (cc % sp->bytes_per_line != 0)
903 : {
904 0 : TIFFErrorExtR(tif, module, "Fractional scanline not read");
905 0 : return (0);
906 : }
907 1 : assert(cc > 0);
908 1 : m = buf;
909 1 : n = cc;
910 : do
911 : {
912 112 : if (sp->subsampling_convert_state == 0)
913 : {
914 14 : if (jpeg_read_raw_data_encap(sp,
915 : &(sp->libjpeg_jpeg_decompress_struct),
916 14 : sp->subsampling_convert_ycbcrimage,
917 14 : sp->subsampling_ver * 8) == 0)
918 : {
919 0 : sp->error_in_raw_data_decoding = 1;
920 0 : return (0);
921 : }
922 : }
923 112 : oy = sp->subsampling_convert_ybuf +
924 112 : sp->subsampling_convert_state * sp->subsampling_ver *
925 112 : sp->subsampling_convert_ylinelen;
926 112 : ocb = sp->subsampling_convert_cbbuf +
927 112 : sp->subsampling_convert_state * sp->subsampling_convert_clinelen;
928 112 : ocr = sp->subsampling_convert_crbuf +
929 112 : sp->subsampling_convert_state * sp->subsampling_convert_clinelen;
930 112 : p = m;
931 13552 : for (q = 0; q < sp->subsampling_convert_clinelenout; q++)
932 : {
933 13440 : r = oy;
934 40320 : for (sy = 0; sy < sp->subsampling_ver; sy++)
935 : {
936 80640 : for (sx = 0; sx < sp->subsampling_hor; sx++)
937 53760 : *p++ = *r++;
938 26880 : r += sp->subsampling_convert_ylinelen - sp->subsampling_hor;
939 : }
940 13440 : oy += sp->subsampling_hor;
941 13440 : *p++ = *ocb++;
942 13440 : *p++ = *ocr++;
943 : }
944 112 : sp->subsampling_convert_state++;
945 112 : if (sp->subsampling_convert_state == sp->subsampling_convert_clines)
946 14 : sp->subsampling_convert_state = 0;
947 112 : m += sp->bytes_per_line;
948 112 : n -= sp->bytes_per_line;
949 112 : } while (n > 0);
950 1 : return (1);
951 : }
952 :
953 0 : static int OJPEGDecodeScanlines(TIFF *tif, uint8_t *buf, tmsize_t cc)
954 : {
955 : static const char module[] = "OJPEGDecodeScanlines";
956 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
957 : uint8_t *m;
958 : tmsize_t n;
959 0 : if (cc % sp->bytes_per_line != 0)
960 : {
961 0 : TIFFErrorExtR(tif, module, "Fractional scanline not read");
962 0 : return (0);
963 : }
964 0 : assert(cc > 0);
965 0 : m = buf;
966 0 : n = cc;
967 : do
968 : {
969 0 : if (jpeg_read_scanlines_encap(sp, &(sp->libjpeg_jpeg_decompress_struct),
970 : &m, 1) == 0)
971 0 : return (0);
972 0 : m += sp->bytes_per_line;
973 0 : n -= sp->bytes_per_line;
974 0 : } while (n > 0);
975 0 : return (1);
976 : }
977 :
978 0 : static void OJPEGPostDecode(TIFF *tif, uint8_t *buf, tmsize_t cc)
979 : {
980 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
981 : (void)buf;
982 : (void)cc;
983 : /* This function somehow incorrectly assumes that a whole strile was read,
984 : */
985 : /* which is not true when TIFFReadScanline() is called, */
986 : /* and may thus incorrectly consider it has read the whole image, causing */
987 : /* OJPEGLibjpegSessionAbort() to be called prematurely. */
988 : /* So this logic should be fixed to take into account cc, or disable */
989 : /* the scan line reading interface. */
990 : /* Triggered by https://gitlab.com/libtiff/libtiff/-/issues/337 */
991 0 : sp->write_curstrile++;
992 0 : if (sp->write_curstrile % tif->tif_dir.td_stripsperimage == 0)
993 : {
994 0 : assert(sp->libjpeg_session_active != 0);
995 0 : OJPEGLibjpegSessionAbort(tif);
996 0 : sp->writeheader_done = 0;
997 : }
998 0 : }
999 :
1000 0 : static int OJPEGSetupEncode(TIFF *tif)
1001 : {
1002 : static const char module[] = "OJPEGSetupEncode";
1003 0 : TIFFErrorExtR(
1004 : tif, module,
1005 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1006 0 : return (0);
1007 : }
1008 :
1009 0 : static int OJPEGPreEncode(TIFF *tif, uint16_t s)
1010 : {
1011 : static const char module[] = "OJPEGPreEncode";
1012 : (void)s;
1013 0 : TIFFErrorExtR(
1014 : tif, module,
1015 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1016 0 : return (0);
1017 : }
1018 :
1019 0 : static int OJPEGEncode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s)
1020 : {
1021 : static const char module[] = "OJPEGEncode";
1022 : (void)buf;
1023 : (void)cc;
1024 : (void)s;
1025 0 : TIFFErrorExtR(
1026 : tif, module,
1027 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1028 0 : return (0);
1029 : }
1030 :
1031 0 : static int OJPEGPostEncode(TIFF *tif)
1032 : {
1033 : static const char module[] = "OJPEGPostEncode";
1034 0 : TIFFErrorExtR(
1035 : tif, module,
1036 : "OJPEG encoding not supported; use new-style JPEG compression instead");
1037 0 : return (0);
1038 : }
1039 :
1040 2 : static void OJPEGCleanup(TIFF *tif)
1041 : {
1042 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1043 2 : if (sp != 0)
1044 : {
1045 2 : tif->tif_tagmethods.vgetfield = sp->vgetparent;
1046 2 : tif->tif_tagmethods.vsetfield = sp->vsetparent;
1047 2 : tif->tif_tagmethods.printdir = sp->printdir;
1048 2 : if (sp->qtable[0] != 0)
1049 1 : _TIFFfreeExt(tif, sp->qtable[0]);
1050 2 : if (sp->qtable[1] != 0)
1051 1 : _TIFFfreeExt(tif, sp->qtable[1]);
1052 2 : if (sp->qtable[2] != 0)
1053 1 : _TIFFfreeExt(tif, sp->qtable[2]);
1054 2 : if (sp->qtable[3] != 0)
1055 0 : _TIFFfreeExt(tif, sp->qtable[3]);
1056 2 : if (sp->dctable[0] != 0)
1057 1 : _TIFFfreeExt(tif, sp->dctable[0]);
1058 2 : if (sp->dctable[1] != 0)
1059 1 : _TIFFfreeExt(tif, sp->dctable[1]);
1060 2 : if (sp->dctable[2] != 0)
1061 1 : _TIFFfreeExt(tif, sp->dctable[2]);
1062 2 : if (sp->dctable[3] != 0)
1063 0 : _TIFFfreeExt(tif, sp->dctable[3]);
1064 2 : if (sp->actable[0] != 0)
1065 1 : _TIFFfreeExt(tif, sp->actable[0]);
1066 2 : if (sp->actable[1] != 0)
1067 1 : _TIFFfreeExt(tif, sp->actable[1]);
1068 2 : if (sp->actable[2] != 0)
1069 1 : _TIFFfreeExt(tif, sp->actable[2]);
1070 2 : if (sp->actable[3] != 0)
1071 0 : _TIFFfreeExt(tif, sp->actable[3]);
1072 2 : if (sp->libjpeg_session_active != 0)
1073 1 : OJPEGLibjpegSessionAbort(tif);
1074 2 : if (sp->subsampling_convert_ycbcrbuf != 0)
1075 1 : _TIFFfreeExt(tif, sp->subsampling_convert_ycbcrbuf);
1076 2 : if (sp->subsampling_convert_ycbcrimage != 0)
1077 1 : _TIFFfreeExt(tif, sp->subsampling_convert_ycbcrimage);
1078 2 : if (sp->skip_buffer != 0)
1079 0 : _TIFFfreeExt(tif, sp->skip_buffer);
1080 2 : _TIFFfreeExt(tif, sp);
1081 2 : tif->tif_data = NULL;
1082 2 : _TIFFSetDefaultCompressionState(tif);
1083 : }
1084 2 : }
1085 :
1086 2 : static void OJPEGSubsamplingCorrect(TIFF *tif)
1087 : {
1088 : static const char module[] = "OJPEGSubsamplingCorrect";
1089 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1090 : uint8_t mh;
1091 : uint8_t mv;
1092 :
1093 2 : assert(sp->subsamplingcorrect_done == 0);
1094 2 : if ((tif->tif_dir.td_samplesperpixel != 3) ||
1095 2 : ((tif->tif_dir.td_photometric != PHOTOMETRIC_YCBCR) &&
1096 0 : (tif->tif_dir.td_photometric != PHOTOMETRIC_ITULAB)))
1097 : {
1098 0 : if (sp->subsampling_tag != 0)
1099 0 : TIFFWarningExtR(tif, module,
1100 : "Subsampling tag not appropriate for this "
1101 : "Photometric and/or SamplesPerPixel");
1102 0 : sp->subsampling_hor = 1;
1103 0 : sp->subsampling_ver = 1;
1104 0 : sp->subsampling_force_desubsampling_inside_decompression = 0;
1105 : }
1106 : else
1107 : {
1108 2 : sp->subsamplingcorrect_done = 1;
1109 2 : mh = sp->subsampling_hor;
1110 2 : mv = sp->subsampling_ver;
1111 2 : sp->subsamplingcorrect = 1;
1112 2 : OJPEGReadHeaderInfoSec(tif);
1113 2 : if (sp->subsampling_force_desubsampling_inside_decompression != 0)
1114 : {
1115 0 : sp->subsampling_hor = 1;
1116 0 : sp->subsampling_ver = 1;
1117 : }
1118 2 : sp->subsamplingcorrect = 0;
1119 2 : if (((sp->subsampling_hor != mh) || (sp->subsampling_ver != mv)) &&
1120 0 : (sp->subsampling_force_desubsampling_inside_decompression == 0))
1121 : {
1122 0 : if (sp->subsampling_tag == 0)
1123 0 : TIFFWarningExtR(
1124 : tif, module,
1125 : "Subsampling tag is not set, yet subsampling inside JPEG "
1126 : "data [%" PRIu8 ",%" PRIu8
1127 : "] does not match default values [2,2]; assuming "
1128 : "subsampling inside JPEG data is correct",
1129 0 : sp->subsampling_hor, sp->subsampling_ver);
1130 : else
1131 0 : TIFFWarningExtR(
1132 : tif, module,
1133 : "Subsampling inside JPEG data [%" PRIu8 ",%" PRIu8
1134 : "] does not match subsampling tag values [%" PRIu8
1135 : ",%" PRIu8
1136 : "]; assuming subsampling inside JPEG data is correct",
1137 0 : sp->subsampling_hor, sp->subsampling_ver, mh, mv);
1138 : }
1139 2 : if (sp->subsampling_force_desubsampling_inside_decompression != 0)
1140 : {
1141 0 : if (sp->subsampling_tag == 0)
1142 0 : TIFFWarningExtR(
1143 : tif, module,
1144 : "Subsampling tag is not set, yet subsampling inside JPEG "
1145 : "data does not match default values [2,2] (nor any other "
1146 : "values allowed in TIFF); assuming subsampling inside JPEG "
1147 : "data is correct and desubsampling inside JPEG "
1148 : "decompression");
1149 : else
1150 0 : TIFFWarningExtR(
1151 : tif, module,
1152 : "Subsampling inside JPEG data does not match subsampling "
1153 : "tag values [%" PRIu8 ",%" PRIu8
1154 : "] (nor any other values allowed in TIFF); assuming "
1155 : "subsampling inside JPEG data is correct and desubsampling "
1156 : "inside JPEG decompression",
1157 : mh, mv);
1158 : }
1159 2 : if (sp->subsampling_force_desubsampling_inside_decompression == 0)
1160 : {
1161 2 : if (sp->subsampling_hor < sp->subsampling_ver)
1162 0 : TIFFWarningExtR(tif, module,
1163 : "Subsampling values [%" PRIu8 ",%" PRIu8
1164 : "] are not allowed in TIFF",
1165 0 : sp->subsampling_hor, sp->subsampling_ver);
1166 : }
1167 : }
1168 2 : sp->subsamplingcorrect_done = 1;
1169 2 : }
1170 :
1171 2 : static int OJPEGReadHeaderInfo(TIFF *tif)
1172 : {
1173 : static const char module[] = "OJPEGReadHeaderInfo";
1174 2 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1175 2 : assert(sp->readheader_done == 0);
1176 2 : sp->image_width = tif->tif_dir.td_imagewidth;
1177 2 : sp->image_length = tif->tif_dir.td_imagelength;
1178 2 : if (isTiled(tif))
1179 : {
1180 2 : sp->strile_width = tif->tif_dir.td_tilewidth;
1181 2 : sp->strile_length = tif->tif_dir.td_tilelength;
1182 2 : sp->strile_length_total =
1183 2 : ((sp->image_length + sp->strile_length - 1) / sp->strile_length) *
1184 2 : sp->strile_length;
1185 : }
1186 : else
1187 : {
1188 0 : sp->strile_width = sp->image_width;
1189 0 : sp->strile_length = tif->tif_dir.td_rowsperstrip;
1190 0 : if (sp->strile_length == (uint32_t)-1)
1191 0 : sp->strile_length = sp->image_length;
1192 0 : sp->strile_length_total = sp->image_length;
1193 : }
1194 2 : if (tif->tif_dir.td_samplesperpixel == 1)
1195 : {
1196 0 : sp->samples_per_pixel = 1;
1197 0 : sp->plane_sample_offset = 0;
1198 0 : sp->samples_per_pixel_per_plane = sp->samples_per_pixel;
1199 0 : sp->subsampling_hor = 1;
1200 0 : sp->subsampling_ver = 1;
1201 : }
1202 : else
1203 : {
1204 2 : if (tif->tif_dir.td_samplesperpixel != 3)
1205 : {
1206 0 : TIFFErrorExtR(tif, module,
1207 : "SamplesPerPixel %" PRIu8
1208 : " not supported for this compression scheme",
1209 0 : sp->samples_per_pixel);
1210 0 : return (0);
1211 : }
1212 2 : sp->samples_per_pixel = 3;
1213 2 : sp->plane_sample_offset = 0;
1214 2 : if (tif->tif_dir.td_planarconfig == PLANARCONFIG_CONTIG)
1215 2 : sp->samples_per_pixel_per_plane = 3;
1216 : else
1217 0 : sp->samples_per_pixel_per_plane = 1;
1218 : }
1219 2 : if (sp->strile_length < sp->image_length)
1220 : {
1221 0 : if (((sp->subsampling_hor != 1) && (sp->subsampling_hor != 2) &&
1222 0 : (sp->subsampling_hor != 4)) ||
1223 0 : ((sp->subsampling_ver != 1) && (sp->subsampling_ver != 2) &&
1224 0 : (sp->subsampling_ver != 4)))
1225 : {
1226 0 : TIFFErrorExtR(tif, module, "Invalid subsampling values");
1227 0 : return (0);
1228 : }
1229 0 : if (sp->strile_length % (sp->subsampling_ver * 8) != 0)
1230 : {
1231 0 : TIFFErrorExtR(tif, module,
1232 : "Incompatible vertical subsampling and image "
1233 : "strip/tile length");
1234 0 : return (0);
1235 : }
1236 0 : sp->restart_interval =
1237 0 : (uint16_t)(((sp->strile_width + sp->subsampling_hor * 8 - 1) /
1238 0 : (sp->subsampling_hor * 8)) *
1239 0 : (sp->strile_length / (sp->subsampling_ver * 8)));
1240 : }
1241 2 : if (OJPEGReadHeaderInfoSec(tif) == 0)
1242 1 : return (0);
1243 1 : sp->sos_end[0].log = 1;
1244 1 : sp->sos_end[0].in_buffer_source = sp->in_buffer_source;
1245 1 : sp->sos_end[0].in_buffer_next_strile = sp->in_buffer_next_strile;
1246 1 : sp->sos_end[0].in_buffer_file_pos =
1247 1 : sp->in_buffer_file_pos - sp->in_buffer_togo;
1248 1 : sp->sos_end[0].in_buffer_file_togo =
1249 1 : sp->in_buffer_file_togo + sp->in_buffer_togo;
1250 1 : sp->readheader_done = 1;
1251 1 : return (1);
1252 : }
1253 :
1254 0 : static int OJPEGReadSecondarySos(TIFF *tif, uint16_t s)
1255 : {
1256 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1257 : uint8_t m;
1258 0 : assert(s > 0);
1259 0 : assert(s < 3);
1260 0 : assert(sp->sos_end[0].log != 0);
1261 0 : assert(sp->sos_end[s].log == 0);
1262 0 : sp->plane_sample_offset = (uint8_t)(s - 1);
1263 0 : while (sp->sos_end[sp->plane_sample_offset].log == 0)
1264 0 : sp->plane_sample_offset--;
1265 0 : sp->in_buffer_source =
1266 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_source;
1267 0 : sp->in_buffer_next_strile =
1268 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile;
1269 0 : sp->in_buffer_file_pos =
1270 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos;
1271 0 : sp->in_buffer_file_pos_log = 0;
1272 0 : sp->in_buffer_file_togo =
1273 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo;
1274 0 : sp->in_buffer_togo = 0;
1275 0 : sp->in_buffer_cur = 0;
1276 0 : while (sp->plane_sample_offset < s)
1277 : {
1278 : do
1279 : {
1280 0 : if (OJPEGReadByte(sp, &m) == 0)
1281 0 : return (0);
1282 0 : if (m == 255)
1283 : {
1284 : do
1285 : {
1286 0 : if (OJPEGReadByte(sp, &m) == 0)
1287 0 : return (0);
1288 0 : if (m != 255)
1289 0 : break;
1290 : } while (1);
1291 0 : if (m == JPEG_MARKER_SOS)
1292 0 : break;
1293 : }
1294 : } while (1);
1295 0 : sp->plane_sample_offset++;
1296 0 : if (OJPEGReadHeaderInfoSecStreamSos(tif) == 0)
1297 0 : return (0);
1298 0 : sp->sos_end[sp->plane_sample_offset].log = 1;
1299 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_source =
1300 0 : sp->in_buffer_source;
1301 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile =
1302 0 : sp->in_buffer_next_strile;
1303 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos =
1304 0 : sp->in_buffer_file_pos - sp->in_buffer_togo;
1305 0 : sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo =
1306 0 : sp->in_buffer_file_togo + sp->in_buffer_togo;
1307 : }
1308 0 : return (1);
1309 : }
1310 :
1311 1 : static int OJPEGWriteHeaderInfo(TIFF *tif)
1312 : {
1313 : static const char module[] = "OJPEGWriteHeaderInfo";
1314 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1315 : uint8_t **m;
1316 : uint32_t n;
1317 : /* if a previous attempt failed, don't try again */
1318 1 : if (sp->libjpeg_session_active != 0)
1319 0 : return 0;
1320 1 : sp->out_state = ososSoi;
1321 1 : sp->restart_index = 0;
1322 1 : jpeg_std_error(&(sp->libjpeg_jpeg_error_mgr));
1323 1 : sp->libjpeg_jpeg_error_mgr.output_message =
1324 : OJPEGLibjpegJpegErrorMgrOutputMessage;
1325 1 : sp->libjpeg_jpeg_error_mgr.error_exit = OJPEGLibjpegJpegErrorMgrErrorExit;
1326 1 : sp->libjpeg_jpeg_decompress_struct.err = &(sp->libjpeg_jpeg_error_mgr);
1327 1 : sp->libjpeg_jpeg_decompress_struct.client_data = (void *)tif;
1328 1 : if (jpeg_create_decompress_encap(
1329 : sp, &(sp->libjpeg_jpeg_decompress_struct)) == 0)
1330 0 : return (0);
1331 1 : sp->libjpeg_session_active = 1;
1332 1 : sp->libjpeg_jpeg_source_mgr.bytes_in_buffer = 0;
1333 1 : sp->libjpeg_jpeg_source_mgr.init_source =
1334 : OJPEGLibjpegJpegSourceMgrInitSource;
1335 1 : sp->libjpeg_jpeg_source_mgr.fill_input_buffer =
1336 : OJPEGLibjpegJpegSourceMgrFillInputBuffer;
1337 1 : sp->libjpeg_jpeg_source_mgr.skip_input_data =
1338 : OJPEGLibjpegJpegSourceMgrSkipInputData;
1339 1 : sp->libjpeg_jpeg_source_mgr.resync_to_restart =
1340 : OJPEGLibjpegJpegSourceMgrResyncToRestart;
1341 1 : sp->libjpeg_jpeg_source_mgr.term_source =
1342 : OJPEGLibjpegJpegSourceMgrTermSource;
1343 1 : sp->libjpeg_jpeg_decompress_struct.src = &(sp->libjpeg_jpeg_source_mgr);
1344 1 : if (jpeg_read_header_encap(sp, &(sp->libjpeg_jpeg_decompress_struct), 1) ==
1345 : 0)
1346 0 : return (0);
1347 1 : if ((sp->subsampling_force_desubsampling_inside_decompression == 0) &&
1348 1 : (sp->samples_per_pixel_per_plane > 1))
1349 : {
1350 1 : sp->libjpeg_jpeg_decompress_struct.raw_data_out = 1;
1351 : #if JPEG_LIB_VERSION >= 70
1352 1 : sp->libjpeg_jpeg_decompress_struct.do_fancy_upsampling = FALSE;
1353 : #endif
1354 1 : sp->libjpeg_jpeg_query_style = 0;
1355 1 : if (sp->subsampling_convert_log == 0)
1356 : {
1357 1 : assert(sp->subsampling_convert_ycbcrbuf == 0);
1358 1 : assert(sp->subsampling_convert_ycbcrimage == 0);
1359 : /* Check for division by zero. */
1360 1 : if (sp->subsampling_hor == 0 || sp->subsampling_ver == 0)
1361 0 : return (0);
1362 1 : sp->subsampling_convert_ylinelen =
1363 1 : ((sp->strile_width + sp->subsampling_hor * 8 - 1) /
1364 1 : (sp->subsampling_hor * 8) * sp->subsampling_hor * 8);
1365 1 : sp->subsampling_convert_ylines = sp->subsampling_ver * 8;
1366 1 : sp->subsampling_convert_clinelen =
1367 1 : sp->subsampling_convert_ylinelen / sp->subsampling_hor;
1368 1 : sp->subsampling_convert_clines = 8;
1369 1 : sp->subsampling_convert_ybuflen = sp->subsampling_convert_ylinelen *
1370 1 : sp->subsampling_convert_ylines;
1371 1 : sp->subsampling_convert_cbuflen = sp->subsampling_convert_clinelen *
1372 1 : sp->subsampling_convert_clines;
1373 1 : sp->subsampling_convert_ycbcrbuflen =
1374 1 : sp->subsampling_convert_ybuflen +
1375 1 : 2 * sp->subsampling_convert_cbuflen;
1376 : /* The calloc is not normally necessary, except in some edge/broken
1377 : * cases */
1378 : /* for example for a tiled image of height 1 with a tile height of 1
1379 : * and subsampling_hor=subsampling_ver=2 */
1380 : /* In that case, libjpeg will only fill the 8 first lines of the 16
1381 : * lines */
1382 : /* See https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16844
1383 : */
1384 : /* Even if this case is allowed (?), its handling is broken because
1385 : * OJPEGPreDecode() should also likely */
1386 : /* reset subsampling_convert_state to 0 when changing tile. */
1387 1 : sp->subsampling_convert_ycbcrbuf =
1388 1 : _TIFFcallocExt(tif, 1, sp->subsampling_convert_ycbcrbuflen);
1389 1 : if (sp->subsampling_convert_ycbcrbuf == 0)
1390 : {
1391 0 : TIFFErrorExtR(tif, module, "Out of memory");
1392 0 : return (0);
1393 : }
1394 1 : sp->subsampling_convert_ybuf = sp->subsampling_convert_ycbcrbuf;
1395 1 : sp->subsampling_convert_cbbuf =
1396 1 : sp->subsampling_convert_ybuf + sp->subsampling_convert_ybuflen;
1397 1 : sp->subsampling_convert_crbuf =
1398 1 : sp->subsampling_convert_cbbuf + sp->subsampling_convert_cbuflen;
1399 1 : sp->subsampling_convert_ycbcrimagelen =
1400 1 : 3 + sp->subsampling_convert_ylines +
1401 1 : 2 * sp->subsampling_convert_clines;
1402 2 : sp->subsampling_convert_ycbcrimage = _TIFFmallocExt(
1403 1 : tif, sp->subsampling_convert_ycbcrimagelen * sizeof(uint8_t *));
1404 1 : if (sp->subsampling_convert_ycbcrimage == 0)
1405 : {
1406 0 : TIFFErrorExtR(tif, module, "Out of memory");
1407 0 : return (0);
1408 : }
1409 1 : m = sp->subsampling_convert_ycbcrimage;
1410 1 : *m++ = (uint8_t *)(sp->subsampling_convert_ycbcrimage + 3);
1411 1 : *m++ = (uint8_t *)(sp->subsampling_convert_ycbcrimage + 3 +
1412 1 : sp->subsampling_convert_ylines);
1413 1 : *m++ = (uint8_t *)(sp->subsampling_convert_ycbcrimage + 3 +
1414 1 : sp->subsampling_convert_ylines +
1415 1 : sp->subsampling_convert_clines);
1416 17 : for (n = 0; n < sp->subsampling_convert_ylines; n++)
1417 16 : *m++ = sp->subsampling_convert_ybuf +
1418 16 : n * sp->subsampling_convert_ylinelen;
1419 9 : for (n = 0; n < sp->subsampling_convert_clines; n++)
1420 8 : *m++ = sp->subsampling_convert_cbbuf +
1421 8 : n * sp->subsampling_convert_clinelen;
1422 9 : for (n = 0; n < sp->subsampling_convert_clines; n++)
1423 8 : *m++ = sp->subsampling_convert_crbuf +
1424 8 : n * sp->subsampling_convert_clinelen;
1425 1 : sp->subsampling_convert_clinelenout =
1426 2 : sp->strile_width / sp->subsampling_hor +
1427 1 : ((sp->strile_width % sp->subsampling_hor) != 0 ? 1 : 0);
1428 1 : sp->subsampling_convert_state = 0;
1429 1 : sp->error_in_raw_data_decoding = 0;
1430 1 : sp->bytes_per_line =
1431 1 : sp->subsampling_convert_clinelenout *
1432 1 : (sp->subsampling_ver * sp->subsampling_hor + 2);
1433 1 : sp->lines_per_strile =
1434 2 : sp->strile_length / sp->subsampling_ver +
1435 1 : ((sp->strile_length % sp->subsampling_ver) != 0 ? 1 : 0);
1436 1 : sp->subsampling_convert_log = 1;
1437 : }
1438 : }
1439 : else
1440 : {
1441 0 : sp->libjpeg_jpeg_decompress_struct.jpeg_color_space = JCS_UNKNOWN;
1442 0 : sp->libjpeg_jpeg_decompress_struct.out_color_space = JCS_UNKNOWN;
1443 0 : sp->libjpeg_jpeg_query_style = 1;
1444 0 : sp->bytes_per_line = sp->samples_per_pixel_per_plane * sp->strile_width;
1445 0 : sp->lines_per_strile = sp->strile_length;
1446 : }
1447 1 : if (jpeg_start_decompress_encap(sp,
1448 : &(sp->libjpeg_jpeg_decompress_struct)) == 0)
1449 0 : return (0);
1450 1 : if (sp->libjpeg_jpeg_decompress_struct.image_width != sp->strile_width)
1451 : {
1452 0 : TIFFErrorExtR(tif, module,
1453 : "jpeg_start_decompress() returned image_width = %u, "
1454 : "expected %" PRIu32,
1455 : sp->libjpeg_jpeg_decompress_struct.image_width,
1456 : sp->strile_width);
1457 0 : return 0;
1458 : }
1459 1 : if (sp->libjpeg_jpeg_decompress_struct.max_h_samp_factor !=
1460 1 : sp->subsampling_hor ||
1461 1 : sp->libjpeg_jpeg_decompress_struct.max_v_samp_factor !=
1462 1 : sp->subsampling_ver)
1463 : {
1464 0 : TIFFErrorExtR(tif, module,
1465 : "jpeg_start_decompress() returned max_h_samp_factor = %d "
1466 : "and max_v_samp_factor = %d, expected %" PRIu8
1467 : " and %" PRIu8,
1468 : sp->libjpeg_jpeg_decompress_struct.max_h_samp_factor,
1469 : sp->libjpeg_jpeg_decompress_struct.max_v_samp_factor,
1470 0 : sp->subsampling_hor, sp->subsampling_ver);
1471 0 : return 0;
1472 : }
1473 :
1474 1 : sp->writeheader_done = 1;
1475 1 : return (1);
1476 : }
1477 :
1478 1 : static void OJPEGLibjpegSessionAbort(TIFF *tif)
1479 : {
1480 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1481 1 : assert(sp->libjpeg_session_active != 0);
1482 1 : jpeg_destroy((jpeg_common_struct *)(&(sp->libjpeg_jpeg_decompress_struct)));
1483 1 : sp->libjpeg_session_active = 0;
1484 1 : }
1485 :
1486 4 : static int OJPEGReadHeaderInfoSec(TIFF *tif)
1487 : {
1488 : static const char module[] = "OJPEGReadHeaderInfoSec";
1489 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1490 : uint8_t m;
1491 : uint16_t n;
1492 : uint8_t o;
1493 4 : if (sp->file_size == 0)
1494 2 : sp->file_size = TIFFGetFileSize(tif);
1495 4 : if (sp->jpeg_interchange_format != 0)
1496 : {
1497 0 : if (sp->jpeg_interchange_format >= sp->file_size)
1498 : {
1499 0 : sp->jpeg_interchange_format = 0;
1500 0 : sp->jpeg_interchange_format_length = 0;
1501 : }
1502 : else
1503 : {
1504 0 : if ((sp->jpeg_interchange_format_length == 0) ||
1505 0 : (sp->jpeg_interchange_format >
1506 0 : UINT64_MAX - sp->jpeg_interchange_format_length) ||
1507 0 : (sp->jpeg_interchange_format +
1508 0 : sp->jpeg_interchange_format_length >
1509 0 : sp->file_size))
1510 0 : sp->jpeg_interchange_format_length =
1511 0 : sp->file_size - sp->jpeg_interchange_format;
1512 : }
1513 : }
1514 4 : sp->in_buffer_source = osibsNotSetYet;
1515 4 : sp->in_buffer_next_strile = 0;
1516 4 : sp->in_buffer_strile_count = tif->tif_dir.td_nstrips;
1517 4 : sp->in_buffer_file_togo = 0;
1518 4 : sp->in_buffer_togo = 0;
1519 : do
1520 : {
1521 4 : if (OJPEGReadBytePeek(sp, &m) == 0)
1522 2 : return (0);
1523 2 : if (m != 255)
1524 2 : break;
1525 0 : OJPEGReadByteAdvance(sp);
1526 : do
1527 : {
1528 0 : if (OJPEGReadByte(sp, &m) == 0)
1529 0 : return (0);
1530 0 : } while (m == 255);
1531 0 : switch (m)
1532 : {
1533 0 : case JPEG_MARKER_SOI:
1534 : /* this type of marker has no data, and should be skipped */
1535 0 : break;
1536 0 : case JPEG_MARKER_COM:
1537 : case JPEG_MARKER_APP0:
1538 : case JPEG_MARKER_APP0 + 1:
1539 : case JPEG_MARKER_APP0 + 2:
1540 : case JPEG_MARKER_APP0 + 3:
1541 : case JPEG_MARKER_APP0 + 4:
1542 : case JPEG_MARKER_APP0 + 5:
1543 : case JPEG_MARKER_APP0 + 6:
1544 : case JPEG_MARKER_APP0 + 7:
1545 : case JPEG_MARKER_APP0 + 8:
1546 : case JPEG_MARKER_APP0 + 9:
1547 : case JPEG_MARKER_APP0 + 10:
1548 : case JPEG_MARKER_APP0 + 11:
1549 : case JPEG_MARKER_APP0 + 12:
1550 : case JPEG_MARKER_APP0 + 13:
1551 : case JPEG_MARKER_APP0 + 14:
1552 : case JPEG_MARKER_APP0 + 15:
1553 : /* this type of marker has data, but it has no use to us (and no
1554 : * place here) and should be skipped */
1555 0 : if (OJPEGReadWord(sp, &n) == 0)
1556 0 : return (0);
1557 0 : if (n < 2)
1558 : {
1559 0 : if (sp->subsamplingcorrect == 0)
1560 0 : TIFFErrorExtR(tif, module, "Corrupt JPEG data");
1561 0 : return (0);
1562 : }
1563 0 : if (n > 2)
1564 0 : OJPEGReadSkip(sp, n - 2);
1565 0 : break;
1566 0 : case JPEG_MARKER_DRI:
1567 0 : if (OJPEGReadHeaderInfoSecStreamDri(tif) == 0)
1568 0 : return (0);
1569 0 : break;
1570 0 : case JPEG_MARKER_DQT:
1571 0 : if (OJPEGReadHeaderInfoSecStreamDqt(tif) == 0)
1572 0 : return (0);
1573 0 : break;
1574 0 : case JPEG_MARKER_DHT:
1575 0 : if (OJPEGReadHeaderInfoSecStreamDht(tif) == 0)
1576 0 : return (0);
1577 0 : break;
1578 0 : case JPEG_MARKER_SOF0:
1579 : case JPEG_MARKER_SOF1:
1580 : case JPEG_MARKER_SOF3:
1581 0 : if (OJPEGReadHeaderInfoSecStreamSof(tif, m) == 0)
1582 0 : return (0);
1583 0 : if (sp->subsamplingcorrect != 0)
1584 0 : return (1);
1585 0 : break;
1586 0 : case JPEG_MARKER_SOS:
1587 0 : if (sp->subsamplingcorrect != 0)
1588 0 : return (1);
1589 0 : assert(sp->plane_sample_offset == 0);
1590 0 : if (OJPEGReadHeaderInfoSecStreamSos(tif) == 0)
1591 0 : return (0);
1592 0 : break;
1593 0 : default:
1594 0 : TIFFErrorExtR(tif, module,
1595 : "Unknown marker type %" PRIu8 " in JPEG data", m);
1596 0 : return (0);
1597 : }
1598 0 : } while (m != JPEG_MARKER_SOS);
1599 2 : if (sp->subsamplingcorrect)
1600 1 : return (1);
1601 1 : if (sp->sof_log == 0)
1602 : {
1603 1 : if (OJPEGReadHeaderInfoSecTablesQTable(tif) == 0)
1604 0 : return (0);
1605 1 : sp->sof_marker_id = JPEG_MARKER_SOF0;
1606 4 : for (o = 0; o < sp->samples_per_pixel; o++)
1607 3 : sp->sof_c[o] = o;
1608 1 : sp->sof_hv[0] = ((sp->subsampling_hor << 4) | sp->subsampling_ver);
1609 3 : for (o = 1; o < sp->samples_per_pixel; o++)
1610 2 : sp->sof_hv[o] = 17;
1611 1 : sp->sof_x = sp->strile_width;
1612 1 : sp->sof_y = sp->strile_length_total;
1613 1 : sp->sof_log = 1;
1614 1 : if (OJPEGReadHeaderInfoSecTablesDcTable(tif) == 0)
1615 0 : return (0);
1616 1 : if (OJPEGReadHeaderInfoSecTablesAcTable(tif) == 0)
1617 0 : return (0);
1618 3 : for (o = 1; o < sp->samples_per_pixel; o++)
1619 2 : sp->sos_cs[o] = o;
1620 : }
1621 1 : return (1);
1622 : }
1623 :
1624 0 : static int OJPEGReadHeaderInfoSecStreamDri(TIFF *tif)
1625 : {
1626 : /* This could easily cause trouble in some cases... but no such cases have
1627 : occurred so far */
1628 : static const char module[] = "OJPEGReadHeaderInfoSecStreamDri";
1629 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1630 : uint16_t m;
1631 0 : if (OJPEGReadWord(sp, &m) == 0)
1632 0 : return (0);
1633 0 : if (m != 4)
1634 : {
1635 0 : TIFFErrorExtR(tif, module, "Corrupt DRI marker in JPEG data");
1636 0 : return (0);
1637 : }
1638 0 : if (OJPEGReadWord(sp, &m) == 0)
1639 0 : return (0);
1640 0 : sp->restart_interval = m;
1641 0 : return (1);
1642 : }
1643 :
1644 0 : static int OJPEGReadHeaderInfoSecStreamDqt(TIFF *tif)
1645 : {
1646 : /* this is a table marker, and it is to be saved as a whole for exact
1647 : * pushing on the jpeg stream later on */
1648 : static const char module[] = "OJPEGReadHeaderInfoSecStreamDqt";
1649 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1650 : uint16_t m;
1651 : uint32_t na;
1652 : uint8_t *nb;
1653 : uint8_t o;
1654 0 : if (OJPEGReadWord(sp, &m) == 0)
1655 0 : return (0);
1656 0 : if (m <= 2)
1657 : {
1658 0 : if (sp->subsamplingcorrect == 0)
1659 0 : TIFFErrorExtR(tif, module, "Corrupt DQT marker in JPEG data");
1660 0 : return (0);
1661 : }
1662 0 : if (sp->subsamplingcorrect != 0)
1663 0 : OJPEGReadSkip(sp, m - 2);
1664 : else
1665 : {
1666 0 : m -= 2;
1667 : do
1668 : {
1669 0 : if (m < 65)
1670 : {
1671 0 : TIFFErrorExtR(tif, module, "Corrupt DQT marker in JPEG data");
1672 0 : return (0);
1673 : }
1674 0 : na = sizeof(uint32_t) + 69;
1675 0 : nb = _TIFFmallocExt(tif, na);
1676 0 : if (nb == 0)
1677 : {
1678 0 : TIFFErrorExtR(tif, module, "Out of memory");
1679 0 : return (0);
1680 : }
1681 0 : *(uint32_t *)nb = na;
1682 0 : nb[sizeof(uint32_t)] = 255;
1683 0 : nb[sizeof(uint32_t) + 1] = JPEG_MARKER_DQT;
1684 0 : nb[sizeof(uint32_t) + 2] = 0;
1685 0 : nb[sizeof(uint32_t) + 3] = 67;
1686 0 : if (OJPEGReadBlock(sp, 65, &nb[sizeof(uint32_t) + 4]) == 0)
1687 : {
1688 0 : _TIFFfreeExt(tif, nb);
1689 0 : return (0);
1690 : }
1691 0 : o = nb[sizeof(uint32_t) + 4] & 15;
1692 0 : if (3 < o)
1693 : {
1694 0 : TIFFErrorExtR(tif, module, "Corrupt DQT marker in JPEG data");
1695 0 : _TIFFfreeExt(tif, nb);
1696 0 : return (0);
1697 : }
1698 0 : if (sp->qtable[o] != 0)
1699 0 : _TIFFfreeExt(tif, sp->qtable[o]);
1700 0 : sp->qtable[o] = nb;
1701 0 : m -= 65;
1702 0 : } while (m > 0);
1703 : }
1704 0 : return (1);
1705 : }
1706 :
1707 0 : static int OJPEGReadHeaderInfoSecStreamDht(TIFF *tif)
1708 : {
1709 : /* this is a table marker, and it is to be saved as a whole for exact
1710 : * pushing on the jpeg stream later on */
1711 : /* TODO: the following assumes there is only one table in this marker... but
1712 : * i'm not quite sure that assumption is guaranteed correct */
1713 : static const char module[] = "OJPEGReadHeaderInfoSecStreamDht";
1714 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1715 : uint16_t m;
1716 : uint32_t na;
1717 : uint8_t *nb;
1718 : uint8_t o;
1719 0 : if (OJPEGReadWord(sp, &m) == 0)
1720 0 : return (0);
1721 0 : if (m <= 2)
1722 : {
1723 0 : if (sp->subsamplingcorrect == 0)
1724 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1725 0 : return (0);
1726 : }
1727 0 : if (sp->subsamplingcorrect != 0)
1728 : {
1729 0 : OJPEGReadSkip(sp, m - 2);
1730 : }
1731 : else
1732 : {
1733 0 : na = sizeof(uint32_t) + 2 + m;
1734 0 : nb = _TIFFmallocExt(tif, na);
1735 0 : if (nb == 0)
1736 : {
1737 0 : TIFFErrorExtR(tif, module, "Out of memory");
1738 0 : return (0);
1739 : }
1740 0 : *(uint32_t *)nb = na;
1741 0 : nb[sizeof(uint32_t)] = 255;
1742 0 : nb[sizeof(uint32_t) + 1] = JPEG_MARKER_DHT;
1743 0 : nb[sizeof(uint32_t) + 2] = (m >> 8);
1744 0 : nb[sizeof(uint32_t) + 3] = (m & 255);
1745 0 : if (OJPEGReadBlock(sp, m - 2, &nb[sizeof(uint32_t) + 4]) == 0)
1746 : {
1747 0 : _TIFFfreeExt(tif, nb);
1748 0 : return (0);
1749 : }
1750 0 : o = nb[sizeof(uint32_t) + 4];
1751 0 : if ((o & 240) == 0)
1752 : {
1753 0 : if (3 < o)
1754 : {
1755 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1756 0 : _TIFFfreeExt(tif, nb);
1757 0 : return (0);
1758 : }
1759 0 : if (sp->dctable[o] != 0)
1760 0 : _TIFFfreeExt(tif, sp->dctable[o]);
1761 0 : sp->dctable[o] = nb;
1762 : }
1763 : else
1764 : {
1765 0 : if ((o & 240) != 16)
1766 : {
1767 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1768 0 : _TIFFfreeExt(tif, nb);
1769 0 : return (0);
1770 : }
1771 0 : o &= 15;
1772 0 : if (3 < o)
1773 : {
1774 0 : TIFFErrorExtR(tif, module, "Corrupt DHT marker in JPEG data");
1775 0 : _TIFFfreeExt(tif, nb);
1776 0 : return (0);
1777 : }
1778 0 : if (sp->actable[o] != 0)
1779 0 : _TIFFfreeExt(tif, sp->actable[o]);
1780 0 : sp->actable[o] = nb;
1781 : }
1782 : }
1783 0 : return (1);
1784 : }
1785 :
1786 0 : static int OJPEGReadHeaderInfoSecStreamSof(TIFF *tif, uint8_t marker_id)
1787 : {
1788 : /* this marker needs to be checked, and part of its data needs to be saved
1789 : * for regeneration later on */
1790 : static const char module[] = "OJPEGReadHeaderInfoSecStreamSof";
1791 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1792 : uint16_t m;
1793 : uint16_t n;
1794 : uint8_t o;
1795 : uint16_t p;
1796 : uint16_t q;
1797 0 : if (sp->sof_log != 0)
1798 : {
1799 0 : TIFFErrorExtR(tif, module, "Corrupt JPEG data");
1800 0 : return (0);
1801 : }
1802 0 : if (sp->subsamplingcorrect == 0)
1803 0 : sp->sof_marker_id = marker_id;
1804 : /* Lf: data length */
1805 0 : if (OJPEGReadWord(sp, &m) == 0)
1806 0 : return (0);
1807 0 : if (m < 11)
1808 : {
1809 0 : if (sp->subsamplingcorrect == 0)
1810 0 : TIFFErrorExtR(tif, module, "Corrupt SOF marker in JPEG data");
1811 0 : return (0);
1812 : }
1813 0 : m -= 8;
1814 0 : if (m % 3 != 0)
1815 : {
1816 0 : if (sp->subsamplingcorrect == 0)
1817 0 : TIFFErrorExtR(tif, module, "Corrupt SOF marker in JPEG data");
1818 0 : return (0);
1819 : }
1820 0 : n = m / 3;
1821 0 : if (sp->subsamplingcorrect == 0)
1822 : {
1823 0 : if (n != sp->samples_per_pixel)
1824 : {
1825 0 : TIFFErrorExtR(
1826 : tif, module,
1827 : "JPEG compressed data indicates unexpected number of samples");
1828 0 : return (0);
1829 : }
1830 : }
1831 : /* P: Sample precision */
1832 0 : if (OJPEGReadByte(sp, &o) == 0)
1833 0 : return (0);
1834 0 : if (o != 8)
1835 : {
1836 0 : if (sp->subsamplingcorrect == 0)
1837 0 : TIFFErrorExtR(tif, module,
1838 : "JPEG compressed data indicates unexpected number of "
1839 : "bits per sample");
1840 0 : return (0);
1841 : }
1842 : /* Y: Number of lines, X: Number of samples per line */
1843 0 : if (sp->subsamplingcorrect)
1844 0 : OJPEGReadSkip(sp, 4);
1845 : else
1846 : {
1847 : /* Y: Number of lines */
1848 0 : if (OJPEGReadWord(sp, &p) == 0)
1849 0 : return (0);
1850 0 : if (((uint32_t)p < sp->image_length) &&
1851 0 : ((uint32_t)p < sp->strile_length_total))
1852 : {
1853 0 : TIFFErrorExtR(tif, module,
1854 : "JPEG compressed data indicates unexpected height");
1855 0 : return (0);
1856 : }
1857 0 : sp->sof_y = p;
1858 : /* X: Number of samples per line */
1859 0 : if (OJPEGReadWord(sp, &p) == 0)
1860 0 : return (0);
1861 0 : if (((uint32_t)p < sp->image_width) && ((uint32_t)p < sp->strile_width))
1862 : {
1863 0 : TIFFErrorExtR(tif, module,
1864 : "JPEG compressed data indicates unexpected width");
1865 0 : return (0);
1866 : }
1867 0 : if ((uint32_t)p > sp->strile_width)
1868 : {
1869 0 : TIFFErrorExtR(tif, module,
1870 : "JPEG compressed data image width exceeds expected "
1871 : "image width");
1872 0 : return (0);
1873 : }
1874 0 : sp->sof_x = p;
1875 : }
1876 : /* Nf: Number of image components in frame */
1877 0 : if (OJPEGReadByte(sp, &o) == 0)
1878 0 : return (0);
1879 0 : if (o != n)
1880 : {
1881 0 : if (sp->subsamplingcorrect == 0)
1882 0 : TIFFErrorExtR(tif, module, "Corrupt SOF marker in JPEG data");
1883 0 : return (0);
1884 : }
1885 : /* per component stuff */
1886 : /* TODO: double-check that flow implies that n cannot be as big as to make
1887 : * us overflow sof_c, sof_hv and sof_tq arrays */
1888 0 : for (q = 0; q < n; q++)
1889 : {
1890 : /* C: Component identifier */
1891 0 : if (OJPEGReadByte(sp, &o) == 0)
1892 0 : return (0);
1893 0 : if (sp->subsamplingcorrect == 0)
1894 0 : sp->sof_c[q] = o;
1895 : /* H: Horizontal sampling factor, and V: Vertical sampling factor */
1896 0 : if (OJPEGReadByte(sp, &o) == 0)
1897 0 : return (0);
1898 0 : if (sp->subsamplingcorrect != 0)
1899 : {
1900 0 : if (q == 0)
1901 : {
1902 0 : sp->subsampling_hor = (o >> 4);
1903 0 : sp->subsampling_ver = (o & 15);
1904 0 : if (((sp->subsampling_hor != 1) && (sp->subsampling_hor != 2) &&
1905 0 : (sp->subsampling_hor != 4)) ||
1906 0 : ((sp->subsampling_ver != 1) && (sp->subsampling_ver != 2) &&
1907 0 : (sp->subsampling_ver != 4)))
1908 0 : sp->subsampling_force_desubsampling_inside_decompression =
1909 : 1;
1910 : }
1911 : else
1912 : {
1913 0 : if (o != 17)
1914 0 : sp->subsampling_force_desubsampling_inside_decompression =
1915 : 1;
1916 : }
1917 : }
1918 : else
1919 : {
1920 0 : sp->sof_hv[q] = o;
1921 0 : if (sp->subsampling_force_desubsampling_inside_decompression == 0)
1922 : {
1923 0 : if (q == 0)
1924 : {
1925 0 : if (o != ((sp->subsampling_hor << 4) | sp->subsampling_ver))
1926 : {
1927 0 : TIFFErrorExtR(tif, module,
1928 : "JPEG compressed data indicates "
1929 : "unexpected subsampling values");
1930 0 : return (0);
1931 : }
1932 : }
1933 : else
1934 : {
1935 0 : if (o != 17)
1936 : {
1937 0 : TIFFErrorExtR(tif, module,
1938 : "JPEG compressed data indicates "
1939 : "unexpected subsampling values");
1940 0 : return (0);
1941 : }
1942 : }
1943 : }
1944 : }
1945 : /* Tq: Quantization table destination selector */
1946 0 : if (OJPEGReadByte(sp, &o) == 0)
1947 0 : return (0);
1948 0 : if (sp->subsamplingcorrect == 0)
1949 0 : sp->sof_tq[q] = o;
1950 : }
1951 0 : if (sp->subsamplingcorrect == 0)
1952 0 : sp->sof_log = 1;
1953 0 : return (1);
1954 : }
1955 :
1956 0 : static int OJPEGReadHeaderInfoSecStreamSos(TIFF *tif)
1957 : {
1958 : /* this marker needs to be checked, and part of its data needs to be saved
1959 : * for regeneration later on */
1960 : static const char module[] = "OJPEGReadHeaderInfoSecStreamSos";
1961 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
1962 : uint16_t m;
1963 : uint8_t n;
1964 : uint8_t o;
1965 0 : assert(sp->subsamplingcorrect == 0);
1966 0 : if (sp->sof_log == 0)
1967 : {
1968 0 : TIFFErrorExtR(tif, module, "Corrupt SOS marker in JPEG data");
1969 0 : return (0);
1970 : }
1971 : /* Ls */
1972 0 : if (OJPEGReadWord(sp, &m) == 0)
1973 0 : return (0);
1974 0 : if (m != 6 + sp->samples_per_pixel_per_plane * 2)
1975 : {
1976 0 : TIFFErrorExtR(tif, module, "Corrupt SOS marker in JPEG data");
1977 0 : return (0);
1978 : }
1979 : /* Ns */
1980 0 : if (OJPEGReadByte(sp, &n) == 0)
1981 0 : return (0);
1982 0 : if (n != sp->samples_per_pixel_per_plane)
1983 : {
1984 0 : TIFFErrorExtR(tif, module, "Corrupt SOS marker in JPEG data");
1985 0 : return (0);
1986 : }
1987 : /* Cs, Td, and Ta */
1988 0 : for (o = 0; o < sp->samples_per_pixel_per_plane; o++)
1989 : {
1990 : /* Cs */
1991 0 : if (OJPEGReadByte(sp, &n) == 0)
1992 0 : return (0);
1993 0 : sp->sos_cs[sp->plane_sample_offset + o] = n;
1994 : /* Td and Ta */
1995 0 : if (OJPEGReadByte(sp, &n) == 0)
1996 0 : return (0);
1997 0 : sp->sos_tda[sp->plane_sample_offset + o] = n;
1998 : }
1999 : /* skip Ss, Se, Ah, en Al -> no check, as per Tom Lane recommendation, as
2000 : * per LibJpeg source */
2001 0 : OJPEGReadSkip(sp, 3);
2002 0 : return (1);
2003 : }
2004 :
2005 1 : static int OJPEGReadHeaderInfoSecTablesQTable(TIFF *tif)
2006 : {
2007 : static const char module[] = "OJPEGReadHeaderInfoSecTablesQTable";
2008 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2009 : uint8_t m;
2010 : uint8_t n;
2011 : uint32_t oa;
2012 : uint8_t *ob;
2013 : uint32_t p;
2014 1 : if (sp->qtable_offset[0] == 0)
2015 : {
2016 0 : TIFFErrorExtR(tif, module, "Missing JPEG tables");
2017 0 : return (0);
2018 : }
2019 1 : sp->in_buffer_file_pos_log = 0;
2020 4 : for (m = 0; m < sp->samples_per_pixel; m++)
2021 : {
2022 3 : if ((sp->qtable_offset[m] != 0) &&
2023 2 : ((m == 0) || (sp->qtable_offset[m] != sp->qtable_offset[m - 1])))
2024 : {
2025 4 : for (n = 0; n < m - 1; n++)
2026 : {
2027 1 : if (sp->qtable_offset[m] == sp->qtable_offset[n])
2028 : {
2029 0 : TIFFErrorExtR(tif, module, "Corrupt JpegQTables tag value");
2030 0 : return (0);
2031 : }
2032 : }
2033 3 : oa = sizeof(uint32_t) + 69;
2034 3 : ob = _TIFFmallocExt(tif, oa);
2035 3 : if (ob == 0)
2036 : {
2037 0 : TIFFErrorExtR(tif, module, "Out of memory");
2038 0 : return (0);
2039 : }
2040 3 : *(uint32_t *)ob = oa;
2041 3 : ob[sizeof(uint32_t)] = 255;
2042 3 : ob[sizeof(uint32_t) + 1] = JPEG_MARKER_DQT;
2043 3 : ob[sizeof(uint32_t) + 2] = 0;
2044 3 : ob[sizeof(uint32_t) + 3] = 67;
2045 3 : ob[sizeof(uint32_t) + 4] = m;
2046 3 : TIFFSeekFile(tif, sp->qtable_offset[m], SEEK_SET);
2047 3 : p = (uint32_t)TIFFReadFile(tif, &ob[sizeof(uint32_t) + 5], 64);
2048 3 : if (p != 64)
2049 : {
2050 0 : _TIFFfreeExt(tif, ob);
2051 0 : return (0);
2052 : }
2053 3 : if (sp->qtable[m] != 0)
2054 0 : _TIFFfreeExt(tif, sp->qtable[m]);
2055 3 : sp->qtable[m] = ob;
2056 3 : sp->sof_tq[m] = m;
2057 : }
2058 : else
2059 0 : sp->sof_tq[m] = sp->sof_tq[m - 1];
2060 : }
2061 1 : return (1);
2062 : }
2063 :
2064 1 : static int OJPEGReadHeaderInfoSecTablesDcTable(TIFF *tif)
2065 : {
2066 : static const char module[] = "OJPEGReadHeaderInfoSecTablesDcTable";
2067 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2068 : uint8_t m;
2069 : uint8_t n;
2070 : uint8_t o[16];
2071 : uint32_t p;
2072 : uint32_t q;
2073 : uint32_t ra;
2074 : uint8_t *rb;
2075 1 : if (sp->dctable_offset[0] == 0)
2076 : {
2077 0 : TIFFErrorExtR(tif, module, "Missing JPEG tables");
2078 0 : return (0);
2079 : }
2080 1 : sp->in_buffer_file_pos_log = 0;
2081 4 : for (m = 0; m < sp->samples_per_pixel; m++)
2082 : {
2083 3 : if ((sp->dctable_offset[m] != 0) &&
2084 2 : ((m == 0) || (sp->dctable_offset[m] != sp->dctable_offset[m - 1])))
2085 : {
2086 4 : for (n = 0; n < m - 1; n++)
2087 : {
2088 1 : if (sp->dctable_offset[m] == sp->dctable_offset[n])
2089 : {
2090 0 : TIFFErrorExtR(tif, module,
2091 : "Corrupt JpegDcTables tag value");
2092 0 : return (0);
2093 : }
2094 : }
2095 3 : TIFFSeekFile(tif, sp->dctable_offset[m], SEEK_SET);
2096 3 : p = (uint32_t)TIFFReadFile(tif, o, 16);
2097 3 : if (p != 16)
2098 0 : return (0);
2099 3 : q = 0;
2100 51 : for (n = 0; n < 16; n++)
2101 48 : q += o[n];
2102 3 : ra = sizeof(uint32_t) + 21 + q;
2103 3 : rb = _TIFFmallocExt(tif, ra);
2104 3 : if (rb == 0)
2105 : {
2106 0 : TIFFErrorExtR(tif, module, "Out of memory");
2107 0 : return (0);
2108 : }
2109 3 : *(uint32_t *)rb = ra;
2110 3 : rb[sizeof(uint32_t)] = 255;
2111 3 : rb[sizeof(uint32_t) + 1] = JPEG_MARKER_DHT;
2112 3 : rb[sizeof(uint32_t) + 2] = (uint8_t)((19 + q) >> 8);
2113 3 : rb[sizeof(uint32_t) + 3] = ((19 + q) & 255);
2114 3 : rb[sizeof(uint32_t) + 4] = m;
2115 51 : for (n = 0; n < 16; n++)
2116 48 : rb[sizeof(uint32_t) + 5 + n] = o[n];
2117 3 : p = (uint32_t)TIFFReadFile(tif, &(rb[sizeof(uint32_t) + 21]), q);
2118 3 : if (p != q)
2119 : {
2120 0 : _TIFFfreeExt(tif, rb);
2121 0 : return (0);
2122 : }
2123 3 : if (sp->dctable[m] != 0)
2124 0 : _TIFFfreeExt(tif, sp->dctable[m]);
2125 3 : sp->dctable[m] = rb;
2126 3 : sp->sos_tda[m] = (m << 4);
2127 : }
2128 : else
2129 0 : sp->sos_tda[m] = sp->sos_tda[m - 1];
2130 : }
2131 1 : return (1);
2132 : }
2133 :
2134 1 : static int OJPEGReadHeaderInfoSecTablesAcTable(TIFF *tif)
2135 : {
2136 : static const char module[] = "OJPEGReadHeaderInfoSecTablesAcTable";
2137 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2138 : uint8_t m;
2139 : uint8_t n;
2140 : uint8_t o[16];
2141 : uint32_t p;
2142 : uint32_t q;
2143 : uint32_t ra;
2144 : uint8_t *rb;
2145 1 : if (sp->actable_offset[0] == 0)
2146 : {
2147 0 : TIFFErrorExtR(tif, module, "Missing JPEG tables");
2148 0 : return (0);
2149 : }
2150 1 : sp->in_buffer_file_pos_log = 0;
2151 4 : for (m = 0; m < sp->samples_per_pixel; m++)
2152 : {
2153 3 : if ((sp->actable_offset[m] != 0) &&
2154 2 : ((m == 0) || (sp->actable_offset[m] != sp->actable_offset[m - 1])))
2155 : {
2156 4 : for (n = 0; n < m - 1; n++)
2157 : {
2158 1 : if (sp->actable_offset[m] == sp->actable_offset[n])
2159 : {
2160 0 : TIFFErrorExtR(tif, module,
2161 : "Corrupt JpegAcTables tag value");
2162 0 : return (0);
2163 : }
2164 : }
2165 3 : TIFFSeekFile(tif, sp->actable_offset[m], SEEK_SET);
2166 3 : p = (uint32_t)TIFFReadFile(tif, o, 16);
2167 3 : if (p != 16)
2168 0 : return (0);
2169 3 : q = 0;
2170 51 : for (n = 0; n < 16; n++)
2171 48 : q += o[n];
2172 3 : ra = sizeof(uint32_t) + 21 + q;
2173 3 : rb = _TIFFmallocExt(tif, ra);
2174 3 : if (rb == 0)
2175 : {
2176 0 : TIFFErrorExtR(tif, module, "Out of memory");
2177 0 : return (0);
2178 : }
2179 3 : *(uint32_t *)rb = ra;
2180 3 : rb[sizeof(uint32_t)] = 255;
2181 3 : rb[sizeof(uint32_t) + 1] = JPEG_MARKER_DHT;
2182 3 : rb[sizeof(uint32_t) + 2] = (uint8_t)((19 + q) >> 8);
2183 3 : rb[sizeof(uint32_t) + 3] = ((19 + q) & 255);
2184 3 : rb[sizeof(uint32_t) + 4] = (16 | m);
2185 51 : for (n = 0; n < 16; n++)
2186 48 : rb[sizeof(uint32_t) + 5 + n] = o[n];
2187 3 : p = (uint32_t)TIFFReadFile(tif, &(rb[sizeof(uint32_t) + 21]), q);
2188 3 : if (p != q)
2189 : {
2190 0 : _TIFFfreeExt(tif, rb);
2191 0 : return (0);
2192 : }
2193 3 : if (sp->actable[m] != 0)
2194 0 : _TIFFfreeExt(tif, sp->actable[m]);
2195 3 : sp->actable[m] = rb;
2196 3 : sp->sos_tda[m] = (sp->sos_tda[m] | m);
2197 : }
2198 : else
2199 0 : sp->sos_tda[m] = (sp->sos_tda[m] | (sp->sos_tda[m - 1] & 15));
2200 : }
2201 1 : return (1);
2202 : }
2203 :
2204 22 : static int OJPEGReadBufferFill(OJPEGState *sp)
2205 : {
2206 : uint16_t m;
2207 : tmsize_t n;
2208 : /* TODO: double-check: when subsamplingcorrect is set, no call to
2209 : * TIFFErrorExt or TIFFWarningExt should be made in any other case, seek or
2210 : * read errors should be passed through */
2211 : do
2212 : {
2213 22 : if (sp->in_buffer_file_togo != 0)
2214 : {
2215 6 : if (sp->in_buffer_file_pos_log == 0)
2216 : {
2217 3 : TIFFSeekFile(sp->tif, sp->in_buffer_file_pos, SEEK_SET);
2218 3 : sp->in_buffer_file_pos_log = 1;
2219 : }
2220 6 : m = OJPEG_BUFFER;
2221 6 : if ((uint64_t)m > sp->in_buffer_file_togo)
2222 1 : m = (uint16_t)sp->in_buffer_file_togo;
2223 6 : n = TIFFReadFile(sp->tif, sp->in_buffer, (tmsize_t)m);
2224 6 : if (n == 0)
2225 0 : return (0);
2226 6 : assert(n > 0);
2227 6 : assert(n <= OJPEG_BUFFER);
2228 6 : assert(n < 65536);
2229 6 : assert((uint64_t)n <= sp->in_buffer_file_togo);
2230 6 : m = (uint16_t)n;
2231 6 : sp->in_buffer_togo = m;
2232 6 : sp->in_buffer_cur = sp->in_buffer;
2233 6 : sp->in_buffer_file_togo -= m;
2234 6 : sp->in_buffer_file_pos += m;
2235 6 : break;
2236 : }
2237 16 : sp->in_buffer_file_pos_log = 0;
2238 16 : switch (sp->in_buffer_source)
2239 : {
2240 4 : case osibsNotSetYet:
2241 4 : if (sp->jpeg_interchange_format != 0)
2242 : {
2243 0 : sp->in_buffer_file_pos = sp->jpeg_interchange_format;
2244 0 : sp->in_buffer_file_togo =
2245 0 : sp->jpeg_interchange_format_length;
2246 : }
2247 4 : sp->in_buffer_source = osibsJpegInterchangeFormat;
2248 4 : break;
2249 4 : case osibsJpegInterchangeFormat:
2250 4 : sp->in_buffer_source = osibsStrile;
2251 4 : break;
2252 6 : case osibsStrile:
2253 6 : if (sp->in_buffer_next_strile == sp->in_buffer_strile_count)
2254 2 : sp->in_buffer_source = osibsEof;
2255 : else
2256 : {
2257 4 : int err = 0;
2258 4 : sp->in_buffer_file_pos = TIFFGetStrileOffsetWithErr(
2259 : sp->tif, sp->in_buffer_next_strile, &err);
2260 4 : if (err)
2261 0 : return 0;
2262 4 : if (sp->in_buffer_file_pos != 0)
2263 : {
2264 4 : uint64_t bytecount = TIFFGetStrileByteCountWithErr(
2265 : sp->tif, sp->in_buffer_next_strile, &err);
2266 4 : if (err)
2267 0 : return 0;
2268 4 : if (sp->in_buffer_file_pos >= sp->file_size)
2269 2 : sp->in_buffer_file_pos = 0;
2270 2 : else if (bytecount == 0)
2271 0 : sp->in_buffer_file_togo =
2272 0 : sp->file_size - sp->in_buffer_file_pos;
2273 : else
2274 : {
2275 2 : sp->in_buffer_file_togo = bytecount;
2276 2 : if (sp->in_buffer_file_togo == 0)
2277 0 : sp->in_buffer_file_pos = 0;
2278 2 : else if (sp->in_buffer_file_pos >
2279 2 : UINT64_MAX - sp->in_buffer_file_togo ||
2280 2 : sp->in_buffer_file_pos +
2281 2 : sp->in_buffer_file_togo >
2282 2 : sp->file_size)
2283 0 : sp->in_buffer_file_togo =
2284 0 : sp->file_size - sp->in_buffer_file_pos;
2285 : }
2286 : }
2287 4 : sp->in_buffer_next_strile++;
2288 : }
2289 6 : break;
2290 2 : default:
2291 2 : return (0);
2292 : }
2293 : } while (1);
2294 6 : return (1);
2295 : }
2296 :
2297 0 : static int OJPEGReadByte(OJPEGState *sp, uint8_t *byte)
2298 : {
2299 0 : if (sp->in_buffer_togo == 0)
2300 : {
2301 0 : if (OJPEGReadBufferFill(sp) == 0)
2302 0 : return (0);
2303 0 : assert(sp->in_buffer_togo > 0);
2304 : }
2305 0 : *byte = *(sp->in_buffer_cur);
2306 0 : sp->in_buffer_cur++;
2307 0 : sp->in_buffer_togo--;
2308 0 : return (1);
2309 : }
2310 :
2311 4 : static int OJPEGReadBytePeek(OJPEGState *sp, uint8_t *byte)
2312 : {
2313 4 : if (sp->in_buffer_togo == 0)
2314 : {
2315 4 : if (OJPEGReadBufferFill(sp) == 0)
2316 2 : return (0);
2317 2 : assert(sp->in_buffer_togo > 0);
2318 : }
2319 2 : *byte = *(sp->in_buffer_cur);
2320 2 : return (1);
2321 : }
2322 :
2323 0 : static void OJPEGReadByteAdvance(OJPEGState *sp)
2324 : {
2325 0 : assert(sp->in_buffer_togo > 0);
2326 0 : sp->in_buffer_cur++;
2327 0 : sp->in_buffer_togo--;
2328 0 : }
2329 :
2330 0 : static int OJPEGReadWord(OJPEGState *sp, uint16_t *word)
2331 : {
2332 : uint8_t m;
2333 0 : if (OJPEGReadByte(sp, &m) == 0)
2334 0 : return (0);
2335 0 : *word = (m << 8);
2336 0 : if (OJPEGReadByte(sp, &m) == 0)
2337 0 : return (0);
2338 0 : *word |= m;
2339 0 : return (1);
2340 : }
2341 :
2342 0 : static int OJPEGReadBlock(OJPEGState *sp, uint16_t len, void *mem)
2343 : {
2344 : uint16_t mlen;
2345 : uint8_t *mmem;
2346 : uint16_t n;
2347 0 : assert(len > 0);
2348 0 : mlen = len;
2349 0 : mmem = mem;
2350 : do
2351 : {
2352 0 : if (sp->in_buffer_togo == 0)
2353 : {
2354 0 : if (OJPEGReadBufferFill(sp) == 0)
2355 0 : return (0);
2356 0 : assert(sp->in_buffer_togo > 0);
2357 : }
2358 0 : n = mlen;
2359 0 : if (n > sp->in_buffer_togo)
2360 0 : n = sp->in_buffer_togo;
2361 0 : _TIFFmemcpy(mmem, sp->in_buffer_cur, n);
2362 0 : sp->in_buffer_cur += n;
2363 0 : sp->in_buffer_togo -= n;
2364 0 : mlen -= n;
2365 0 : mmem += n;
2366 0 : } while (mlen > 0);
2367 0 : return (1);
2368 : }
2369 :
2370 0 : static void OJPEGReadSkip(OJPEGState *sp, uint16_t len)
2371 : {
2372 : uint16_t m;
2373 : uint16_t n;
2374 0 : m = len;
2375 0 : n = m;
2376 0 : if (n > sp->in_buffer_togo)
2377 0 : n = sp->in_buffer_togo;
2378 0 : sp->in_buffer_cur += n;
2379 0 : sp->in_buffer_togo -= n;
2380 0 : m -= n;
2381 0 : if (m > 0)
2382 : {
2383 0 : assert(sp->in_buffer_togo == 0);
2384 0 : n = m;
2385 0 : if ((uint64_t)n > sp->in_buffer_file_togo)
2386 0 : n = (uint16_t)sp->in_buffer_file_togo;
2387 0 : sp->in_buffer_file_pos += n;
2388 0 : sp->in_buffer_file_togo -= n;
2389 0 : sp->in_buffer_file_pos_log = 0;
2390 : /* we don't skip past jpeginterchangeformat/strile block...
2391 : * if that is asked from us, we're dealing with totally bazurk
2392 : * data anyway, and we've not seen this happening on any
2393 : * testfile, so we might as well likely cause some other
2394 : * meaningless error to be passed at some later time
2395 : */
2396 : }
2397 0 : }
2398 :
2399 17 : static int OJPEGWriteStream(TIFF *tif, void **mem, uint32_t *len)
2400 : {
2401 17 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2402 17 : *len = 0;
2403 : do
2404 : {
2405 21 : assert(sp->out_state <= ososEoi);
2406 21 : switch (sp->out_state)
2407 : {
2408 1 : case ososSoi:
2409 1 : OJPEGWriteStreamSoi(tif, mem, len);
2410 1 : break;
2411 1 : case ososQTable0:
2412 1 : OJPEGWriteStreamQTable(tif, 0, mem, len);
2413 1 : break;
2414 1 : case ososQTable1:
2415 1 : OJPEGWriteStreamQTable(tif, 1, mem, len);
2416 1 : break;
2417 1 : case ososQTable2:
2418 1 : OJPEGWriteStreamQTable(tif, 2, mem, len);
2419 1 : break;
2420 1 : case ososQTable3:
2421 1 : OJPEGWriteStreamQTable(tif, 3, mem, len);
2422 1 : break;
2423 1 : case ososDcTable0:
2424 1 : OJPEGWriteStreamDcTable(tif, 0, mem, len);
2425 1 : break;
2426 1 : case ososDcTable1:
2427 1 : OJPEGWriteStreamDcTable(tif, 1, mem, len);
2428 1 : break;
2429 1 : case ososDcTable2:
2430 1 : OJPEGWriteStreamDcTable(tif, 2, mem, len);
2431 1 : break;
2432 1 : case ososDcTable3:
2433 1 : OJPEGWriteStreamDcTable(tif, 3, mem, len);
2434 1 : break;
2435 1 : case ososAcTable0:
2436 1 : OJPEGWriteStreamAcTable(tif, 0, mem, len);
2437 1 : break;
2438 1 : case ososAcTable1:
2439 1 : OJPEGWriteStreamAcTable(tif, 1, mem, len);
2440 1 : break;
2441 1 : case ososAcTable2:
2442 1 : OJPEGWriteStreamAcTable(tif, 2, mem, len);
2443 1 : break;
2444 1 : case ososAcTable3:
2445 1 : OJPEGWriteStreamAcTable(tif, 3, mem, len);
2446 1 : break;
2447 1 : case ososDri:
2448 1 : OJPEGWriteStreamDri(tif, mem, len);
2449 1 : break;
2450 1 : case ososSof:
2451 1 : OJPEGWriteStreamSof(tif, mem, len);
2452 1 : break;
2453 1 : case ososSos:
2454 1 : OJPEGWriteStreamSos(tif, mem, len);
2455 1 : break;
2456 4 : case ososCompressed:
2457 4 : if (OJPEGWriteStreamCompressed(tif, mem, len) == 0)
2458 0 : return (0);
2459 4 : break;
2460 0 : case ososRst:
2461 0 : OJPEGWriteStreamRst(tif, mem, len);
2462 0 : break;
2463 1 : case ososEoi:
2464 1 : OJPEGWriteStreamEoi(tif, mem, len);
2465 1 : break;
2466 : }
2467 21 : } while (*len == 0);
2468 17 : return (1);
2469 : }
2470 :
2471 1 : static void OJPEGWriteStreamSoi(TIFF *tif, void **mem, uint32_t *len)
2472 : {
2473 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2474 : assert(OJPEG_BUFFER >= 2);
2475 1 : sp->out_buffer[0] = 255;
2476 1 : sp->out_buffer[1] = JPEG_MARKER_SOI;
2477 1 : *len = 2;
2478 1 : *mem = (void *)sp->out_buffer;
2479 1 : sp->out_state++;
2480 1 : }
2481 :
2482 4 : static void OJPEGWriteStreamQTable(TIFF *tif, uint8_t table_index, void **mem,
2483 : uint32_t *len)
2484 : {
2485 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2486 4 : if (sp->qtable[table_index] != 0)
2487 : {
2488 3 : *mem = (void *)(sp->qtable[table_index] + sizeof(uint32_t));
2489 3 : *len = *((uint32_t *)sp->qtable[table_index]) - sizeof(uint32_t);
2490 : }
2491 4 : sp->out_state++;
2492 4 : }
2493 :
2494 4 : static void OJPEGWriteStreamDcTable(TIFF *tif, uint8_t table_index, void **mem,
2495 : uint32_t *len)
2496 : {
2497 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2498 4 : if (sp->dctable[table_index] != 0)
2499 : {
2500 3 : *mem = (void *)(sp->dctable[table_index] + sizeof(uint32_t));
2501 3 : *len = *((uint32_t *)sp->dctable[table_index]) - sizeof(uint32_t);
2502 : }
2503 4 : sp->out_state++;
2504 4 : }
2505 :
2506 4 : static void OJPEGWriteStreamAcTable(TIFF *tif, uint8_t table_index, void **mem,
2507 : uint32_t *len)
2508 : {
2509 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2510 4 : if (sp->actable[table_index] != 0)
2511 : {
2512 3 : *mem = (void *)(sp->actable[table_index] + sizeof(uint32_t));
2513 3 : *len = *((uint32_t *)sp->actable[table_index]) - sizeof(uint32_t);
2514 : }
2515 4 : sp->out_state++;
2516 4 : }
2517 :
2518 1 : static void OJPEGWriteStreamDri(TIFF *tif, void **mem, uint32_t *len)
2519 : {
2520 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2521 : assert(OJPEG_BUFFER >= 6);
2522 1 : if (sp->restart_interval != 0)
2523 : {
2524 0 : sp->out_buffer[0] = 255;
2525 0 : sp->out_buffer[1] = JPEG_MARKER_DRI;
2526 0 : sp->out_buffer[2] = 0;
2527 0 : sp->out_buffer[3] = 4;
2528 0 : sp->out_buffer[4] = (sp->restart_interval >> 8);
2529 0 : sp->out_buffer[5] = (sp->restart_interval & 255);
2530 0 : *len = 6;
2531 0 : *mem = (void *)sp->out_buffer;
2532 : }
2533 1 : sp->out_state++;
2534 1 : }
2535 :
2536 1 : static void OJPEGWriteStreamSof(TIFF *tif, void **mem, uint32_t *len)
2537 : {
2538 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2539 : uint8_t m;
2540 1 : assert(OJPEG_BUFFER >= 2 + 8 + sp->samples_per_pixel_per_plane * 3);
2541 1 : assert(255 >= 8 + sp->samples_per_pixel_per_plane * 3);
2542 1 : sp->out_buffer[0] = 255;
2543 1 : sp->out_buffer[1] = sp->sof_marker_id;
2544 : /* Lf */
2545 1 : sp->out_buffer[2] = 0;
2546 1 : sp->out_buffer[3] = 8 + sp->samples_per_pixel_per_plane * 3;
2547 : /* P */
2548 1 : sp->out_buffer[4] = 8;
2549 : /* Y */
2550 1 : sp->out_buffer[5] = (uint8_t)(sp->sof_y >> 8);
2551 1 : sp->out_buffer[6] = (sp->sof_y & 255);
2552 : /* X */
2553 1 : sp->out_buffer[7] = (uint8_t)(sp->sof_x >> 8);
2554 1 : sp->out_buffer[8] = (sp->sof_x & 255);
2555 : /* Nf */
2556 1 : sp->out_buffer[9] = sp->samples_per_pixel_per_plane;
2557 4 : for (m = 0; m < sp->samples_per_pixel_per_plane; m++)
2558 : {
2559 : /* C */
2560 3 : sp->out_buffer[10 + m * 3] = sp->sof_c[sp->plane_sample_offset + m];
2561 : /* H and V */
2562 3 : sp->out_buffer[10 + m * 3 + 1] =
2563 3 : sp->sof_hv[sp->plane_sample_offset + m];
2564 : /* Tq */
2565 3 : sp->out_buffer[10 + m * 3 + 2] =
2566 3 : sp->sof_tq[sp->plane_sample_offset + m];
2567 : }
2568 1 : *len = 10 + sp->samples_per_pixel_per_plane * 3;
2569 1 : *mem = (void *)sp->out_buffer;
2570 1 : sp->out_state++;
2571 1 : }
2572 :
2573 1 : static void OJPEGWriteStreamSos(TIFF *tif, void **mem, uint32_t *len)
2574 : {
2575 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2576 : uint8_t m;
2577 1 : assert(OJPEG_BUFFER >= 2 + 6 + sp->samples_per_pixel_per_plane * 2);
2578 1 : assert(255 >= 6 + sp->samples_per_pixel_per_plane * 2);
2579 1 : sp->out_buffer[0] = 255;
2580 1 : sp->out_buffer[1] = JPEG_MARKER_SOS;
2581 : /* Ls */
2582 1 : sp->out_buffer[2] = 0;
2583 1 : sp->out_buffer[3] = 6 + sp->samples_per_pixel_per_plane * 2;
2584 : /* Ns */
2585 1 : sp->out_buffer[4] = sp->samples_per_pixel_per_plane;
2586 4 : for (m = 0; m < sp->samples_per_pixel_per_plane; m++)
2587 : {
2588 : /* Cs */
2589 3 : sp->out_buffer[5 + m * 2] = sp->sos_cs[sp->plane_sample_offset + m];
2590 : /* Td and Ta */
2591 3 : sp->out_buffer[5 + m * 2 + 1] =
2592 3 : sp->sos_tda[sp->plane_sample_offset + m];
2593 : }
2594 : /* Ss */
2595 1 : sp->out_buffer[5 + sp->samples_per_pixel_per_plane * 2] = 0;
2596 : /* Se */
2597 1 : sp->out_buffer[5 + sp->samples_per_pixel_per_plane * 2 + 1] = 63;
2598 : /* Ah and Al */
2599 1 : sp->out_buffer[5 + sp->samples_per_pixel_per_plane * 2 + 2] = 0;
2600 1 : *len = 8 + sp->samples_per_pixel_per_plane * 2;
2601 1 : *mem = (void *)sp->out_buffer;
2602 1 : sp->out_state++;
2603 1 : }
2604 :
2605 4 : static int OJPEGWriteStreamCompressed(TIFF *tif, void **mem, uint32_t *len)
2606 : {
2607 4 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2608 4 : if (sp->in_buffer_togo == 0)
2609 : {
2610 4 : if (OJPEGReadBufferFill(sp) == 0)
2611 0 : return (0);
2612 4 : assert(sp->in_buffer_togo > 0);
2613 : }
2614 4 : *len = sp->in_buffer_togo;
2615 4 : *mem = (void *)sp->in_buffer_cur;
2616 4 : sp->in_buffer_togo = 0;
2617 4 : if (sp->in_buffer_file_togo == 0)
2618 : {
2619 1 : switch (sp->in_buffer_source)
2620 : {
2621 1 : case osibsStrile:
2622 1 : if (sp->in_buffer_next_strile < sp->in_buffer_strile_count)
2623 0 : sp->out_state = ososRst;
2624 : else
2625 1 : sp->out_state = ososEoi;
2626 1 : break;
2627 0 : case osibsEof:
2628 0 : sp->out_state = ososEoi;
2629 0 : break;
2630 0 : default:
2631 0 : break;
2632 : }
2633 3 : }
2634 4 : return (1);
2635 : }
2636 :
2637 0 : static void OJPEGWriteStreamRst(TIFF *tif, void **mem, uint32_t *len)
2638 : {
2639 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2640 : assert(OJPEG_BUFFER >= 2);
2641 0 : sp->out_buffer[0] = 255;
2642 0 : sp->out_buffer[1] = JPEG_MARKER_RST0 + sp->restart_index;
2643 0 : sp->restart_index++;
2644 0 : if (sp->restart_index == 8)
2645 0 : sp->restart_index = 0;
2646 0 : *len = 2;
2647 0 : *mem = (void *)sp->out_buffer;
2648 0 : sp->out_state = ososCompressed;
2649 0 : }
2650 :
2651 1 : static void OJPEGWriteStreamEoi(TIFF *tif, void **mem, uint32_t *len)
2652 : {
2653 1 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2654 : assert(OJPEG_BUFFER >= 2);
2655 1 : sp->out_buffer[0] = 255;
2656 1 : sp->out_buffer[1] = JPEG_MARKER_EOI;
2657 1 : *len = 2;
2658 1 : *mem = (void *)sp->out_buffer;
2659 1 : }
2660 :
2661 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2662 1 : static int jpeg_create_decompress_encap(OJPEGState *sp,
2663 : jpeg_decompress_struct *cinfo)
2664 : {
2665 1 : if (SETJMP(sp->exit_jmpbuf))
2666 0 : return 0;
2667 : else
2668 : {
2669 1 : jpeg_create_decompress(cinfo);
2670 1 : return 1;
2671 : }
2672 : }
2673 : #endif
2674 :
2675 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2676 1 : static int jpeg_read_header_encap(OJPEGState *sp, jpeg_decompress_struct *cinfo,
2677 : uint8_t require_image)
2678 : {
2679 1 : if (SETJMP(sp->exit_jmpbuf))
2680 0 : return 0;
2681 : else
2682 : {
2683 1 : jpeg_read_header(cinfo, require_image);
2684 1 : return 1;
2685 : }
2686 : }
2687 : #endif
2688 :
2689 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2690 1 : static int jpeg_start_decompress_encap(OJPEGState *sp,
2691 : jpeg_decompress_struct *cinfo)
2692 : {
2693 1 : if (SETJMP(sp->exit_jmpbuf))
2694 0 : return 0;
2695 : else
2696 : {
2697 1 : jpeg_start_decompress(cinfo);
2698 1 : return 1;
2699 : }
2700 : }
2701 : #endif
2702 :
2703 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2704 0 : static int jpeg_read_scanlines_encap(OJPEGState *sp,
2705 : jpeg_decompress_struct *cinfo,
2706 : void *scanlines, uint32_t max_lines)
2707 : {
2708 0 : if (SETJMP(sp->exit_jmpbuf))
2709 0 : return 0;
2710 : else
2711 : {
2712 0 : jpeg_read_scanlines(cinfo, scanlines, max_lines);
2713 0 : return 1;
2714 : }
2715 : }
2716 : #endif
2717 :
2718 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2719 14 : static int jpeg_read_raw_data_encap(OJPEGState *sp,
2720 : jpeg_decompress_struct *cinfo, void *data,
2721 : uint32_t max_lines)
2722 : {
2723 14 : if (SETJMP(sp->exit_jmpbuf))
2724 0 : return 0;
2725 : else
2726 : {
2727 14 : jpeg_read_raw_data(cinfo, data, max_lines);
2728 14 : return 1;
2729 : }
2730 : }
2731 : #endif
2732 :
2733 : #ifndef LIBJPEG_ENCAP_EXTERNAL
2734 0 : static void jpeg_encap_unwind(TIFF *tif)
2735 : {
2736 0 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2737 0 : LONGJMP(sp->exit_jmpbuf, 1);
2738 : }
2739 : #endif
2740 :
2741 0 : static void OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct *cinfo)
2742 : {
2743 : char buffer[JMSG_LENGTH_MAX];
2744 0 : (*cinfo->err->format_message)(cinfo, buffer);
2745 0 : TIFFWarningExtR(((TIFF *)(cinfo->client_data)), "LibJpeg", "%s", buffer);
2746 0 : }
2747 :
2748 0 : static void OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct *cinfo)
2749 : {
2750 : char buffer[JMSG_LENGTH_MAX];
2751 0 : (*cinfo->err->format_message)(cinfo, buffer);
2752 0 : TIFFErrorExtR(((TIFF *)(cinfo->client_data)), "LibJpeg", "%s", buffer);
2753 0 : jpeg_encap_unwind((TIFF *)(cinfo->client_data));
2754 0 : }
2755 :
2756 1 : static void OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct *cinfo)
2757 : {
2758 : (void)cinfo;
2759 1 : }
2760 :
2761 : static boolean
2762 17 : OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct *cinfo)
2763 : {
2764 17 : TIFF *tif = (TIFF *)cinfo->client_data;
2765 17 : OJPEGState *sp = (OJPEGState *)tif->tif_data;
2766 17 : void *mem = 0;
2767 17 : uint32_t len = 0U;
2768 17 : if (OJPEGWriteStream(tif, &mem, &len) == 0)
2769 : {
2770 0 : TIFFErrorExtR(tif, "LibJpeg", "Premature end of JPEG data");
2771 0 : jpeg_encap_unwind(tif);
2772 : }
2773 17 : sp->libjpeg_jpeg_source_mgr.bytes_in_buffer = len;
2774 17 : sp->libjpeg_jpeg_source_mgr.next_input_byte = mem;
2775 17 : return (1);
2776 : }
2777 :
2778 : static void
2779 0 : OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct *cinfo,
2780 : long num_bytes)
2781 : {
2782 0 : TIFF *tif = (TIFF *)cinfo->client_data;
2783 : (void)num_bytes;
2784 0 : TIFFErrorExtR(tif, "LibJpeg", "Unexpected error");
2785 0 : jpeg_encap_unwind(tif);
2786 0 : }
2787 :
2788 : #ifdef _MSC_VER
2789 : #pragma warning(push)
2790 : #pragma warning(disable : 4702) /* unreachable code */
2791 : #endif
2792 : static boolean
2793 0 : OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct *cinfo,
2794 : int desired)
2795 : {
2796 0 : TIFF *tif = (TIFF *)cinfo->client_data;
2797 : (void)desired;
2798 0 : TIFFErrorExtR(tif, "LibJpeg", "Unexpected error");
2799 0 : jpeg_encap_unwind(tif);
2800 0 : return (0);
2801 : }
2802 : #ifdef _MSC_VER
2803 : #pragma warning(pop)
2804 : #endif
2805 :
2806 0 : static void OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct *cinfo)
2807 : {
2808 : (void)cinfo;
2809 0 : }
2810 :
2811 : #endif
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