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2ba45a60 DM |
1 | /* |
2 | * JPEG 2000 image decoder | |
3 | * Copyright (c) 2007 Kamil Nowosad | |
4 | * Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com> | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | /** | |
24 | * @file | |
25 | * JPEG 2000 image decoder | |
26 | */ | |
27 | ||
28 | #include <inttypes.h> | |
29 | ||
30 | #include "libavutil/attributes.h" | |
31 | #include "libavutil/avassert.h" | |
32 | #include "libavutil/common.h" | |
33 | #include "libavutil/opt.h" | |
34 | #include "libavutil/pixdesc.h" | |
35 | #include "avcodec.h" | |
36 | #include "bytestream.h" | |
37 | #include "internal.h" | |
38 | #include "thread.h" | |
39 | #include "jpeg2000.h" | |
f6fa7814 | 40 | #include "jpeg2000dsp.h" |
2ba45a60 DM |
41 | |
42 | #define JP2_SIG_TYPE 0x6A502020 | |
43 | #define JP2_SIG_VALUE 0x0D0A870A | |
44 | #define JP2_CODESTREAM 0x6A703263 | |
45 | #define JP2_HEADER 0x6A703268 | |
46 | ||
47 | #define HAD_COC 0x01 | |
48 | #define HAD_QCC 0x02 | |
49 | ||
50 | typedef struct Jpeg2000TilePart { | |
51 | uint8_t tile_index; // Tile index who refers the tile-part | |
52 | const uint8_t *tp_end; | |
53 | GetByteContext tpg; // bit stream in tile-part | |
54 | } Jpeg2000TilePart; | |
55 | ||
56 | /* RMK: For JPEG2000 DCINEMA 3 tile-parts in a tile | |
57 | * one per component, so tile_part elements have a size of 3 */ | |
58 | typedef struct Jpeg2000Tile { | |
59 | Jpeg2000Component *comp; | |
60 | uint8_t properties[4]; | |
61 | Jpeg2000CodingStyle codsty[4]; | |
62 | Jpeg2000QuantStyle qntsty[4]; | |
63 | Jpeg2000TilePart tile_part[4]; | |
64 | uint16_t tp_idx; // Tile-part index | |
65 | } Jpeg2000Tile; | |
66 | ||
67 | typedef struct Jpeg2000DecoderContext { | |
68 | AVClass *class; | |
69 | AVCodecContext *avctx; | |
70 | GetByteContext g; | |
71 | ||
72 | int width, height; | |
73 | int image_offset_x, image_offset_y; | |
74 | int tile_offset_x, tile_offset_y; | |
75 | uint8_t cbps[4]; // bits per sample in particular components | |
76 | uint8_t sgnd[4]; // if a component is signed | |
77 | uint8_t properties[4]; | |
78 | int cdx[4], cdy[4]; | |
79 | int precision; | |
80 | int ncomponents; | |
81 | int colour_space; | |
82 | uint32_t palette[256]; | |
83 | int8_t pal8; | |
84 | int cdef[4]; | |
85 | int tile_width, tile_height; | |
86 | unsigned numXtiles, numYtiles; | |
87 | int maxtilelen; | |
88 | ||
89 | Jpeg2000CodingStyle codsty[4]; | |
90 | Jpeg2000QuantStyle qntsty[4]; | |
91 | ||
92 | int bit_index; | |
93 | ||
94 | int curtileno; | |
95 | ||
96 | Jpeg2000Tile *tile; | |
f6fa7814 | 97 | Jpeg2000DSPContext dsp; |
2ba45a60 DM |
98 | |
99 | /*options parameters*/ | |
100 | int reduction_factor; | |
101 | } Jpeg2000DecoderContext; | |
102 | ||
103 | /* get_bits functions for JPEG2000 packet bitstream | |
104 | * It is a get_bit function with a bit-stuffing routine. If the value of the | |
105 | * byte is 0xFF, the next byte includes an extra zero bit stuffed into the MSB. | |
106 | * cf. ISO-15444-1:2002 / B.10.1 Bit-stuffing routine */ | |
107 | static int get_bits(Jpeg2000DecoderContext *s, int n) | |
108 | { | |
109 | int res = 0; | |
110 | ||
111 | while (--n >= 0) { | |
112 | res <<= 1; | |
113 | if (s->bit_index == 0) { | |
114 | s->bit_index = 7 + (bytestream2_get_byte(&s->g) != 0xFFu); | |
115 | } | |
116 | s->bit_index--; | |
117 | res |= (bytestream2_peek_byte(&s->g) >> s->bit_index) & 1; | |
118 | } | |
119 | return res; | |
120 | } | |
121 | ||
122 | static void jpeg2000_flush(Jpeg2000DecoderContext *s) | |
123 | { | |
124 | if (bytestream2_get_byte(&s->g) == 0xff) | |
125 | bytestream2_skip(&s->g, 1); | |
126 | s->bit_index = 8; | |
127 | } | |
128 | ||
129 | /* decode the value stored in node */ | |
130 | static int tag_tree_decode(Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node, | |
131 | int threshold) | |
132 | { | |
133 | Jpeg2000TgtNode *stack[30]; | |
134 | int sp = -1, curval = 0; | |
135 | ||
136 | if (!node) | |
137 | return AVERROR_INVALIDDATA; | |
138 | ||
139 | while (node && !node->vis) { | |
140 | stack[++sp] = node; | |
141 | node = node->parent; | |
142 | } | |
143 | ||
144 | if (node) | |
145 | curval = node->val; | |
146 | else | |
147 | curval = stack[sp]->val; | |
148 | ||
149 | while (curval < threshold && sp >= 0) { | |
150 | if (curval < stack[sp]->val) | |
151 | curval = stack[sp]->val; | |
152 | while (curval < threshold) { | |
153 | int ret; | |
154 | if ((ret = get_bits(s, 1)) > 0) { | |
155 | stack[sp]->vis++; | |
156 | break; | |
157 | } else if (!ret) | |
158 | curval++; | |
159 | else | |
160 | return ret; | |
161 | } | |
162 | stack[sp]->val = curval; | |
163 | sp--; | |
164 | } | |
165 | return curval; | |
166 | } | |
167 | ||
168 | static int pix_fmt_match(enum AVPixelFormat pix_fmt, int components, | |
169 | int bpc, uint32_t log2_chroma_wh, int pal8) | |
170 | { | |
171 | int match = 1; | |
172 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); | |
173 | ||
174 | if (desc->nb_components != components) { | |
175 | return 0; | |
176 | } | |
177 | ||
178 | switch (components) { | |
179 | case 4: | |
180 | match = match && desc->comp[3].depth_minus1 + 1 >= bpc && | |
181 | (log2_chroma_wh >> 14 & 3) == 0 && | |
182 | (log2_chroma_wh >> 12 & 3) == 0; | |
183 | case 3: | |
184 | match = match && desc->comp[2].depth_minus1 + 1 >= bpc && | |
185 | (log2_chroma_wh >> 10 & 3) == desc->log2_chroma_w && | |
186 | (log2_chroma_wh >> 8 & 3) == desc->log2_chroma_h; | |
187 | case 2: | |
188 | match = match && desc->comp[1].depth_minus1 + 1 >= bpc && | |
189 | (log2_chroma_wh >> 6 & 3) == desc->log2_chroma_w && | |
190 | (log2_chroma_wh >> 4 & 3) == desc->log2_chroma_h; | |
191 | ||
192 | case 1: | |
193 | match = match && desc->comp[0].depth_minus1 + 1 >= bpc && | |
194 | (log2_chroma_wh >> 2 & 3) == 0 && | |
195 | (log2_chroma_wh & 3) == 0 && | |
196 | (desc->flags & AV_PIX_FMT_FLAG_PAL) == pal8 * AV_PIX_FMT_FLAG_PAL; | |
197 | } | |
198 | return match; | |
199 | } | |
200 | ||
201 | // pix_fmts with lower bpp have to be listed before | |
202 | // similar pix_fmts with higher bpp. | |
203 | #define RGB_PIXEL_FORMATS AV_PIX_FMT_PAL8,AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64 | |
204 | #define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16 | |
205 | #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P,AV_PIX_FMT_YUV411P,AV_PIX_FMT_YUVA420P, \ | |
206 | AV_PIX_FMT_YUV420P,AV_PIX_FMT_YUV422P,AV_PIX_FMT_YUVA422P, \ | |
207 | AV_PIX_FMT_YUV440P,AV_PIX_FMT_YUV444P,AV_PIX_FMT_YUVA444P, \ | |
208 | AV_PIX_FMT_YUV420P9,AV_PIX_FMT_YUV422P9,AV_PIX_FMT_YUV444P9, \ | |
209 | AV_PIX_FMT_YUVA420P9,AV_PIX_FMT_YUVA422P9,AV_PIX_FMT_YUVA444P9, \ | |
210 | AV_PIX_FMT_YUV420P10,AV_PIX_FMT_YUV422P10,AV_PIX_FMT_YUV444P10, \ | |
211 | AV_PIX_FMT_YUVA420P10,AV_PIX_FMT_YUVA422P10,AV_PIX_FMT_YUVA444P10, \ | |
212 | AV_PIX_FMT_YUV420P12,AV_PIX_FMT_YUV422P12,AV_PIX_FMT_YUV444P12, \ | |
213 | AV_PIX_FMT_YUV420P14,AV_PIX_FMT_YUV422P14,AV_PIX_FMT_YUV444P14, \ | |
214 | AV_PIX_FMT_YUV420P16,AV_PIX_FMT_YUV422P16,AV_PIX_FMT_YUV444P16, \ | |
215 | AV_PIX_FMT_YUVA420P16,AV_PIX_FMT_YUVA422P16,AV_PIX_FMT_YUVA444P16 | |
216 | #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12 | |
217 | ||
218 | static const enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}; | |
219 | static const enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}; | |
220 | static const enum AVPixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}; | |
221 | static const enum AVPixelFormat xyz_pix_fmts[] = {XYZ_PIXEL_FORMATS}; | |
222 | static const enum AVPixelFormat all_pix_fmts[] = {RGB_PIXEL_FORMATS, | |
223 | GRAY_PIXEL_FORMATS, | |
224 | YUV_PIXEL_FORMATS, | |
225 | XYZ_PIXEL_FORMATS}; | |
226 | ||
227 | /* marker segments */ | |
228 | /* get sizes and offsets of image, tiles; number of components */ | |
229 | static int get_siz(Jpeg2000DecoderContext *s) | |
230 | { | |
231 | int i; | |
232 | int ncomponents; | |
233 | uint32_t log2_chroma_wh = 0; | |
234 | const enum AVPixelFormat *possible_fmts = NULL; | |
235 | int possible_fmts_nb = 0; | |
236 | ||
237 | if (bytestream2_get_bytes_left(&s->g) < 36) | |
238 | return AVERROR_INVALIDDATA; | |
239 | ||
240 | s->avctx->profile = bytestream2_get_be16u(&s->g); // Rsiz | |
241 | s->width = bytestream2_get_be32u(&s->g); // Width | |
242 | s->height = bytestream2_get_be32u(&s->g); // Height | |
243 | s->image_offset_x = bytestream2_get_be32u(&s->g); // X0Siz | |
244 | s->image_offset_y = bytestream2_get_be32u(&s->g); // Y0Siz | |
245 | s->tile_width = bytestream2_get_be32u(&s->g); // XTSiz | |
246 | s->tile_height = bytestream2_get_be32u(&s->g); // YTSiz | |
247 | s->tile_offset_x = bytestream2_get_be32u(&s->g); // XT0Siz | |
248 | s->tile_offset_y = bytestream2_get_be32u(&s->g); // YT0Siz | |
249 | ncomponents = bytestream2_get_be16u(&s->g); // CSiz | |
250 | ||
251 | if (s->image_offset_x || s->image_offset_y) { | |
252 | avpriv_request_sample(s->avctx, "Support for image offsets"); | |
253 | return AVERROR_PATCHWELCOME; | |
254 | } | |
255 | ||
256 | if (ncomponents <= 0) { | |
257 | av_log(s->avctx, AV_LOG_ERROR, "Invalid number of components: %d\n", | |
258 | s->ncomponents); | |
259 | return AVERROR_INVALIDDATA; | |
260 | } | |
261 | ||
262 | if (ncomponents > 4) { | |
263 | avpriv_request_sample(s->avctx, "Support for %d components", | |
264 | s->ncomponents); | |
265 | return AVERROR_PATCHWELCOME; | |
266 | } | |
267 | ||
268 | s->ncomponents = ncomponents; | |
269 | ||
270 | if (s->tile_width <= 0 || s->tile_height <= 0) { | |
271 | av_log(s->avctx, AV_LOG_ERROR, "Invalid tile dimension %dx%d.\n", | |
272 | s->tile_width, s->tile_height); | |
273 | return AVERROR_INVALIDDATA; | |
274 | } | |
275 | ||
276 | if (bytestream2_get_bytes_left(&s->g) < 3 * s->ncomponents) | |
277 | return AVERROR_INVALIDDATA; | |
278 | ||
279 | for (i = 0; i < s->ncomponents; i++) { // Ssiz_i XRsiz_i, YRsiz_i | |
280 | uint8_t x = bytestream2_get_byteu(&s->g); | |
281 | s->cbps[i] = (x & 0x7f) + 1; | |
282 | s->precision = FFMAX(s->cbps[i], s->precision); | |
283 | s->sgnd[i] = !!(x & 0x80); | |
284 | s->cdx[i] = bytestream2_get_byteu(&s->g); | |
285 | s->cdy[i] = bytestream2_get_byteu(&s->g); | |
286 | if ( !s->cdx[i] || s->cdx[i] == 3 || s->cdx[i] > 4 | |
287 | || !s->cdy[i] || s->cdy[i] == 3 || s->cdy[i] > 4) { | |
288 | av_log(s->avctx, AV_LOG_ERROR, "Invalid sample separation %d/%d\n", s->cdx[i], s->cdy[i]); | |
289 | return AVERROR_INVALIDDATA; | |
290 | } | |
291 | log2_chroma_wh |= s->cdy[i] >> 1 << i * 4 | s->cdx[i] >> 1 << i * 4 + 2; | |
292 | } | |
293 | ||
294 | s->numXtiles = ff_jpeg2000_ceildiv(s->width - s->tile_offset_x, s->tile_width); | |
295 | s->numYtiles = ff_jpeg2000_ceildiv(s->height - s->tile_offset_y, s->tile_height); | |
296 | ||
297 | if (s->numXtiles * (uint64_t)s->numYtiles > INT_MAX/sizeof(*s->tile)) { | |
298 | s->numXtiles = s->numYtiles = 0; | |
299 | return AVERROR(EINVAL); | |
300 | } | |
301 | ||
302 | s->tile = av_mallocz_array(s->numXtiles * s->numYtiles, sizeof(*s->tile)); | |
303 | if (!s->tile) { | |
304 | s->numXtiles = s->numYtiles = 0; | |
305 | return AVERROR(ENOMEM); | |
306 | } | |
307 | ||
308 | for (i = 0; i < s->numXtiles * s->numYtiles; i++) { | |
309 | Jpeg2000Tile *tile = s->tile + i; | |
310 | ||
311 | tile->comp = av_mallocz(s->ncomponents * sizeof(*tile->comp)); | |
312 | if (!tile->comp) | |
313 | return AVERROR(ENOMEM); | |
314 | } | |
315 | ||
316 | /* compute image size with reduction factor */ | |
317 | s->avctx->width = ff_jpeg2000_ceildivpow2(s->width - s->image_offset_x, | |
318 | s->reduction_factor); | |
319 | s->avctx->height = ff_jpeg2000_ceildivpow2(s->height - s->image_offset_y, | |
320 | s->reduction_factor); | |
321 | ||
322 | if (s->avctx->profile == FF_PROFILE_JPEG2000_DCINEMA_2K || | |
323 | s->avctx->profile == FF_PROFILE_JPEG2000_DCINEMA_4K) { | |
324 | possible_fmts = xyz_pix_fmts; | |
325 | possible_fmts_nb = FF_ARRAY_ELEMS(xyz_pix_fmts); | |
326 | } else { | |
327 | switch (s->colour_space) { | |
328 | case 16: | |
329 | possible_fmts = rgb_pix_fmts; | |
330 | possible_fmts_nb = FF_ARRAY_ELEMS(rgb_pix_fmts); | |
331 | break; | |
332 | case 17: | |
333 | possible_fmts = gray_pix_fmts; | |
334 | possible_fmts_nb = FF_ARRAY_ELEMS(gray_pix_fmts); | |
335 | break; | |
336 | case 18: | |
337 | possible_fmts = yuv_pix_fmts; | |
338 | possible_fmts_nb = FF_ARRAY_ELEMS(yuv_pix_fmts); | |
339 | break; | |
340 | default: | |
341 | possible_fmts = all_pix_fmts; | |
342 | possible_fmts_nb = FF_ARRAY_ELEMS(all_pix_fmts); | |
343 | break; | |
344 | } | |
345 | } | |
346 | for (i = 0; i < possible_fmts_nb; ++i) { | |
347 | if (pix_fmt_match(possible_fmts[i], ncomponents, s->precision, log2_chroma_wh, s->pal8)) { | |
348 | s->avctx->pix_fmt = possible_fmts[i]; | |
349 | break; | |
350 | } | |
351 | } | |
352 | if (i == possible_fmts_nb) { | |
353 | av_log(s->avctx, AV_LOG_ERROR, | |
354 | "Unknown pix_fmt, profile: %d, colour_space: %d, " | |
355 | "components: %d, precision: %d, " | |
356 | "cdx[1]: %d, cdy[1]: %d, cdx[2]: %d, cdy[2]: %d\n", | |
357 | s->avctx->profile, s->colour_space, ncomponents, s->precision, | |
358 | ncomponents > 2 ? s->cdx[1] : 0, | |
359 | ncomponents > 2 ? s->cdy[1] : 0, | |
360 | ncomponents > 2 ? s->cdx[2] : 0, | |
361 | ncomponents > 2 ? s->cdy[2] : 0); | |
362 | return AVERROR_PATCHWELCOME; | |
363 | } | |
364 | s->avctx->bits_per_raw_sample = s->precision; | |
365 | return 0; | |
366 | } | |
367 | ||
368 | /* get common part for COD and COC segments */ | |
369 | static int get_cox(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c) | |
370 | { | |
371 | uint8_t byte; | |
372 | ||
373 | if (bytestream2_get_bytes_left(&s->g) < 5) | |
374 | return AVERROR_INVALIDDATA; | |
375 | ||
376 | /* nreslevels = number of resolution levels | |
377 | = number of decomposition level +1 */ | |
378 | c->nreslevels = bytestream2_get_byteu(&s->g) + 1; | |
379 | if (c->nreslevels >= JPEG2000_MAX_RESLEVELS) { | |
380 | av_log(s->avctx, AV_LOG_ERROR, "nreslevels %d is invalid\n", c->nreslevels); | |
381 | return AVERROR_INVALIDDATA; | |
382 | } | |
383 | ||
384 | if (c->nreslevels <= s->reduction_factor) { | |
385 | /* we are forced to update reduction_factor as its requested value is | |
386 | not compatible with this bitstream, and as we might have used it | |
387 | already in setup earlier we have to fail this frame until | |
388 | reinitialization is implemented */ | |
389 | av_log(s->avctx, AV_LOG_ERROR, "reduction_factor too large for this bitstream, max is %d\n", c->nreslevels - 1); | |
390 | s->reduction_factor = c->nreslevels - 1; | |
391 | return AVERROR(EINVAL); | |
392 | } | |
393 | ||
394 | /* compute number of resolution levels to decode */ | |
395 | c->nreslevels2decode = c->nreslevels - s->reduction_factor; | |
396 | ||
397 | c->log2_cblk_width = (bytestream2_get_byteu(&s->g) & 15) + 2; // cblk width | |
398 | c->log2_cblk_height = (bytestream2_get_byteu(&s->g) & 15) + 2; // cblk height | |
399 | ||
400 | if (c->log2_cblk_width > 10 || c->log2_cblk_height > 10 || | |
401 | c->log2_cblk_width + c->log2_cblk_height > 12) { | |
402 | av_log(s->avctx, AV_LOG_ERROR, "cblk size invalid\n"); | |
403 | return AVERROR_INVALIDDATA; | |
404 | } | |
405 | ||
406 | if (c->log2_cblk_width > 6 || c->log2_cblk_height > 6) { | |
407 | avpriv_request_sample(s->avctx, "cblk size > 64"); | |
408 | return AVERROR_PATCHWELCOME; | |
409 | } | |
410 | ||
411 | c->cblk_style = bytestream2_get_byteu(&s->g); | |
412 | if (c->cblk_style != 0) { // cblk style | |
413 | av_log(s->avctx, AV_LOG_WARNING, "extra cblk styles %X\n", c->cblk_style); | |
414 | } | |
415 | c->transform = bytestream2_get_byteu(&s->g); // DWT transformation type | |
416 | /* set integer 9/7 DWT in case of BITEXACT flag */ | |
417 | if ((s->avctx->flags & CODEC_FLAG_BITEXACT) && (c->transform == FF_DWT97)) | |
418 | c->transform = FF_DWT97_INT; | |
419 | ||
420 | if (c->csty & JPEG2000_CSTY_PREC) { | |
421 | int i; | |
422 | for (i = 0; i < c->nreslevels; i++) { | |
423 | byte = bytestream2_get_byte(&s->g); | |
424 | c->log2_prec_widths[i] = byte & 0x0F; // precinct PPx | |
425 | c->log2_prec_heights[i] = (byte >> 4) & 0x0F; // precinct PPy | |
426 | } | |
427 | } else { | |
428 | memset(c->log2_prec_widths , 15, sizeof(c->log2_prec_widths )); | |
429 | memset(c->log2_prec_heights, 15, sizeof(c->log2_prec_heights)); | |
430 | } | |
431 | return 0; | |
432 | } | |
433 | ||
434 | /* get coding parameters for a particular tile or whole image*/ | |
435 | static int get_cod(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, | |
436 | uint8_t *properties) | |
437 | { | |
438 | Jpeg2000CodingStyle tmp; | |
439 | int compno, ret; | |
440 | ||
441 | if (bytestream2_get_bytes_left(&s->g) < 5) | |
442 | return AVERROR_INVALIDDATA; | |
443 | ||
444 | tmp.csty = bytestream2_get_byteu(&s->g); | |
445 | ||
446 | // get progression order | |
447 | tmp.prog_order = bytestream2_get_byteu(&s->g); | |
448 | ||
449 | tmp.nlayers = bytestream2_get_be16u(&s->g); | |
450 | tmp.mct = bytestream2_get_byteu(&s->g); // multiple component transformation | |
451 | ||
452 | if (tmp.mct && s->ncomponents < 3) { | |
453 | av_log(s->avctx, AV_LOG_ERROR, | |
454 | "MCT %"PRIu8" with too few components (%d)\n", | |
455 | tmp.mct, s->ncomponents); | |
456 | return AVERROR_INVALIDDATA; | |
457 | } | |
458 | ||
459 | if ((ret = get_cox(s, &tmp)) < 0) | |
460 | return ret; | |
461 | ||
462 | for (compno = 0; compno < s->ncomponents; compno++) | |
463 | if (!(properties[compno] & HAD_COC)) | |
464 | memcpy(c + compno, &tmp, sizeof(tmp)); | |
465 | return 0; | |
466 | } | |
467 | ||
468 | /* Get coding parameters for a component in the whole image or a | |
469 | * particular tile. */ | |
470 | static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, | |
471 | uint8_t *properties) | |
472 | { | |
473 | int compno, ret; | |
474 | ||
475 | if (bytestream2_get_bytes_left(&s->g) < 2) | |
476 | return AVERROR_INVALIDDATA; | |
477 | ||
478 | compno = bytestream2_get_byteu(&s->g); | |
479 | ||
480 | if (compno >= s->ncomponents) { | |
481 | av_log(s->avctx, AV_LOG_ERROR, | |
482 | "Invalid compno %d. There are %d components in the image.\n", | |
483 | compno, s->ncomponents); | |
484 | return AVERROR_INVALIDDATA; | |
485 | } | |
486 | ||
487 | c += compno; | |
488 | c->csty = bytestream2_get_byteu(&s->g); | |
489 | ||
490 | if ((ret = get_cox(s, c)) < 0) | |
491 | return ret; | |
492 | ||
493 | properties[compno] |= HAD_COC; | |
494 | return 0; | |
495 | } | |
496 | ||
497 | /* Get common part for QCD and QCC segments. */ | |
498 | static int get_qcx(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q) | |
499 | { | |
500 | int i, x; | |
501 | ||
502 | if (bytestream2_get_bytes_left(&s->g) < 1) | |
503 | return AVERROR_INVALIDDATA; | |
504 | ||
505 | x = bytestream2_get_byteu(&s->g); // Sqcd | |
506 | ||
507 | q->nguardbits = x >> 5; | |
508 | q->quantsty = x & 0x1f; | |
509 | ||
510 | if (q->quantsty == JPEG2000_QSTY_NONE) { | |
511 | n -= 3; | |
512 | if (bytestream2_get_bytes_left(&s->g) < n || | |
513 | n > JPEG2000_MAX_DECLEVELS*3) | |
514 | return AVERROR_INVALIDDATA; | |
515 | for (i = 0; i < n; i++) | |
516 | q->expn[i] = bytestream2_get_byteu(&s->g) >> 3; | |
517 | } else if (q->quantsty == JPEG2000_QSTY_SI) { | |
518 | if (bytestream2_get_bytes_left(&s->g) < 2) | |
519 | return AVERROR_INVALIDDATA; | |
520 | x = bytestream2_get_be16u(&s->g); | |
521 | q->expn[0] = x >> 11; | |
522 | q->mant[0] = x & 0x7ff; | |
523 | for (i = 1; i < JPEG2000_MAX_DECLEVELS * 3; i++) { | |
524 | int curexpn = FFMAX(0, q->expn[0] - (i - 1) / 3); | |
525 | q->expn[i] = curexpn; | |
526 | q->mant[i] = q->mant[0]; | |
527 | } | |
528 | } else { | |
529 | n = (n - 3) >> 1; | |
530 | if (bytestream2_get_bytes_left(&s->g) < 2 * n || | |
531 | n > JPEG2000_MAX_DECLEVELS*3) | |
532 | return AVERROR_INVALIDDATA; | |
533 | for (i = 0; i < n; i++) { | |
534 | x = bytestream2_get_be16u(&s->g); | |
535 | q->expn[i] = x >> 11; | |
536 | q->mant[i] = x & 0x7ff; | |
537 | } | |
538 | } | |
539 | return 0; | |
540 | } | |
541 | ||
542 | /* Get quantization parameters for a particular tile or a whole image. */ | |
543 | static int get_qcd(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, | |
544 | uint8_t *properties) | |
545 | { | |
546 | Jpeg2000QuantStyle tmp; | |
547 | int compno, ret; | |
548 | ||
549 | memset(&tmp, 0, sizeof(tmp)); | |
550 | ||
551 | if ((ret = get_qcx(s, n, &tmp)) < 0) | |
552 | return ret; | |
553 | for (compno = 0; compno < s->ncomponents; compno++) | |
554 | if (!(properties[compno] & HAD_QCC)) | |
555 | memcpy(q + compno, &tmp, sizeof(tmp)); | |
556 | return 0; | |
557 | } | |
558 | ||
559 | /* Get quantization parameters for a component in the whole image | |
560 | * on in a particular tile. */ | |
561 | static int get_qcc(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, | |
562 | uint8_t *properties) | |
563 | { | |
564 | int compno; | |
565 | ||
566 | if (bytestream2_get_bytes_left(&s->g) < 1) | |
567 | return AVERROR_INVALIDDATA; | |
568 | ||
569 | compno = bytestream2_get_byteu(&s->g); | |
570 | ||
571 | if (compno >= s->ncomponents) { | |
572 | av_log(s->avctx, AV_LOG_ERROR, | |
573 | "Invalid compno %d. There are %d components in the image.\n", | |
574 | compno, s->ncomponents); | |
575 | return AVERROR_INVALIDDATA; | |
576 | } | |
577 | ||
578 | properties[compno] |= HAD_QCC; | |
579 | return get_qcx(s, n - 1, q + compno); | |
580 | } | |
581 | ||
582 | /* Get start of tile segment. */ | |
583 | static int get_sot(Jpeg2000DecoderContext *s, int n) | |
584 | { | |
585 | Jpeg2000TilePart *tp; | |
586 | uint16_t Isot; | |
587 | uint32_t Psot; | |
588 | uint8_t TPsot; | |
589 | ||
590 | if (bytestream2_get_bytes_left(&s->g) < 8) | |
591 | return AVERROR_INVALIDDATA; | |
592 | ||
593 | s->curtileno = 0; | |
594 | Isot = bytestream2_get_be16u(&s->g); // Isot | |
595 | if (Isot >= s->numXtiles * s->numYtiles) | |
596 | return AVERROR_INVALIDDATA; | |
597 | ||
598 | s->curtileno = Isot; | |
599 | Psot = bytestream2_get_be32u(&s->g); // Psot | |
600 | TPsot = bytestream2_get_byteu(&s->g); // TPsot | |
601 | ||
602 | /* Read TNSot but not used */ | |
603 | bytestream2_get_byteu(&s->g); // TNsot | |
604 | ||
605 | if (Psot > bytestream2_get_bytes_left(&s->g) + n + 2) { | |
606 | av_log(s->avctx, AV_LOG_ERROR, "Psot %"PRIu32" too big\n", Psot); | |
607 | return AVERROR_INVALIDDATA; | |
608 | } | |
609 | ||
610 | if (TPsot >= FF_ARRAY_ELEMS(s->tile[Isot].tile_part)) { | |
611 | avpriv_request_sample(s->avctx, "Support for %"PRIu8" components", TPsot); | |
612 | return AVERROR_PATCHWELCOME; | |
613 | } | |
614 | ||
615 | s->tile[Isot].tp_idx = TPsot; | |
616 | tp = s->tile[Isot].tile_part + TPsot; | |
617 | tp->tile_index = Isot; | |
618 | tp->tp_end = s->g.buffer + Psot - n - 2; | |
619 | ||
620 | if (!TPsot) { | |
621 | Jpeg2000Tile *tile = s->tile + s->curtileno; | |
622 | ||
623 | /* copy defaults */ | |
624 | memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(Jpeg2000CodingStyle)); | |
625 | memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(Jpeg2000QuantStyle)); | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | /* Tile-part lengths: see ISO 15444-1:2002, section A.7.1 | |
632 | * Used to know the number of tile parts and lengths. | |
633 | * There may be multiple TLMs in the header. | |
634 | * TODO: The function is not used for tile-parts management, nor anywhere else. | |
635 | * It can be useful to allocate memory for tile parts, before managing the SOT | |
636 | * markers. Parsing the TLM header is needed to increment the input header | |
637 | * buffer. | |
638 | * This marker is mandatory for DCI. */ | |
639 | static uint8_t get_tlm(Jpeg2000DecoderContext *s, int n) | |
640 | { | |
641 | uint8_t Stlm, ST, SP, tile_tlm, i; | |
642 | bytestream2_get_byte(&s->g); /* Ztlm: skipped */ | |
643 | Stlm = bytestream2_get_byte(&s->g); | |
644 | ||
645 | // too complex ? ST = ((Stlm >> 4) & 0x01) + ((Stlm >> 4) & 0x02); | |
646 | ST = (Stlm >> 4) & 0x03; | |
647 | // TODO: Manage case of ST = 0b11 --> raise error | |
648 | SP = (Stlm >> 6) & 0x01; | |
649 | tile_tlm = (n - 4) / ((SP + 1) * 2 + ST); | |
650 | for (i = 0; i < tile_tlm; i++) { | |
651 | switch (ST) { | |
652 | case 0: | |
653 | break; | |
654 | case 1: | |
655 | bytestream2_get_byte(&s->g); | |
656 | break; | |
657 | case 2: | |
658 | bytestream2_get_be16(&s->g); | |
659 | break; | |
660 | case 3: | |
661 | bytestream2_get_be32(&s->g); | |
662 | break; | |
663 | } | |
664 | if (SP == 0) { | |
665 | bytestream2_get_be16(&s->g); | |
666 | } else { | |
667 | bytestream2_get_be32(&s->g); | |
668 | } | |
669 | } | |
670 | return 0; | |
671 | } | |
672 | ||
673 | static int init_tile(Jpeg2000DecoderContext *s, int tileno) | |
674 | { | |
675 | int compno; | |
676 | int tilex = tileno % s->numXtiles; | |
677 | int tiley = tileno / s->numXtiles; | |
678 | Jpeg2000Tile *tile = s->tile + tileno; | |
679 | ||
680 | if (!tile->comp) | |
681 | return AVERROR(ENOMEM); | |
682 | ||
683 | for (compno = 0; compno < s->ncomponents; compno++) { | |
684 | Jpeg2000Component *comp = tile->comp + compno; | |
685 | Jpeg2000CodingStyle *codsty = tile->codsty + compno; | |
686 | Jpeg2000QuantStyle *qntsty = tile->qntsty + compno; | |
687 | int ret; // global bandno | |
688 | ||
689 | comp->coord_o[0][0] = FFMAX(tilex * s->tile_width + s->tile_offset_x, s->image_offset_x); | |
690 | comp->coord_o[0][1] = FFMIN((tilex + 1) * s->tile_width + s->tile_offset_x, s->width); | |
691 | comp->coord_o[1][0] = FFMAX(tiley * s->tile_height + s->tile_offset_y, s->image_offset_y); | |
692 | comp->coord_o[1][1] = FFMIN((tiley + 1) * s->tile_height + s->tile_offset_y, s->height); | |
693 | ||
694 | comp->coord[0][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], s->reduction_factor); | |
695 | comp->coord[0][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][1], s->reduction_factor); | |
696 | comp->coord[1][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], s->reduction_factor); | |
697 | comp->coord[1][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][1], s->reduction_factor); | |
698 | ||
699 | if (ret = ff_jpeg2000_init_component(comp, codsty, qntsty, | |
700 | s->cbps[compno], s->cdx[compno], | |
701 | s->cdy[compno], s->avctx)) | |
702 | return ret; | |
703 | } | |
704 | return 0; | |
705 | } | |
706 | ||
707 | /* Read the number of coding passes. */ | |
708 | static int getnpasses(Jpeg2000DecoderContext *s) | |
709 | { | |
710 | int num; | |
711 | if (!get_bits(s, 1)) | |
712 | return 1; | |
713 | if (!get_bits(s, 1)) | |
714 | return 2; | |
715 | if ((num = get_bits(s, 2)) != 3) | |
716 | return num < 0 ? num : 3 + num; | |
717 | if ((num = get_bits(s, 5)) != 31) | |
718 | return num < 0 ? num : 6 + num; | |
719 | num = get_bits(s, 7); | |
720 | return num < 0 ? num : 37 + num; | |
721 | } | |
722 | ||
723 | static int getlblockinc(Jpeg2000DecoderContext *s) | |
724 | { | |
725 | int res = 0, ret; | |
726 | while (ret = get_bits(s, 1)) { | |
727 | if (ret < 0) | |
728 | return ret; | |
729 | res++; | |
730 | } | |
731 | return res; | |
732 | } | |
733 | ||
734 | static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s, | |
735 | Jpeg2000CodingStyle *codsty, | |
736 | Jpeg2000ResLevel *rlevel, int precno, | |
737 | int layno, uint8_t *expn, int numgbits) | |
738 | { | |
739 | int bandno, cblkno, ret, nb_code_blocks; | |
740 | ||
741 | if (!(ret = get_bits(s, 1))) { | |
742 | jpeg2000_flush(s); | |
743 | return 0; | |
744 | } else if (ret < 0) | |
745 | return ret; | |
746 | ||
747 | for (bandno = 0; bandno < rlevel->nbands; bandno++) { | |
748 | Jpeg2000Band *band = rlevel->band + bandno; | |
749 | Jpeg2000Prec *prec = band->prec + precno; | |
750 | ||
751 | if (band->coord[0][0] == band->coord[0][1] || | |
752 | band->coord[1][0] == band->coord[1][1]) | |
753 | continue; | |
754 | nb_code_blocks = prec->nb_codeblocks_height * | |
755 | prec->nb_codeblocks_width; | |
756 | for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) { | |
757 | Jpeg2000Cblk *cblk = prec->cblk + cblkno; | |
758 | int incl, newpasses, llen; | |
759 | ||
760 | if (cblk->npasses) | |
761 | incl = get_bits(s, 1); | |
762 | else | |
763 | incl = tag_tree_decode(s, prec->cblkincl + cblkno, layno + 1) == layno; | |
764 | if (!incl) | |
765 | continue; | |
766 | else if (incl < 0) | |
767 | return incl; | |
768 | ||
769 | if (!cblk->npasses) { | |
770 | int v = expn[bandno] + numgbits - 1 - | |
771 | tag_tree_decode(s, prec->zerobits + cblkno, 100); | |
772 | if (v < 0) { | |
773 | av_log(s->avctx, AV_LOG_ERROR, | |
774 | "nonzerobits %d invalid\n", v); | |
775 | return AVERROR_INVALIDDATA; | |
776 | } | |
777 | cblk->nonzerobits = v; | |
778 | } | |
779 | if ((newpasses = getnpasses(s)) < 0) | |
780 | return newpasses; | |
781 | if ((llen = getlblockinc(s)) < 0) | |
782 | return llen; | |
783 | cblk->lblock += llen; | |
784 | if ((ret = get_bits(s, av_log2(newpasses) + cblk->lblock)) < 0) | |
785 | return ret; | |
786 | if (ret > sizeof(cblk->data)) { | |
787 | avpriv_request_sample(s->avctx, | |
788 | "Block with lengthinc greater than %"SIZE_SPECIFIER"", | |
789 | sizeof(cblk->data)); | |
790 | return AVERROR_PATCHWELCOME; | |
791 | } | |
792 | cblk->lengthinc = ret; | |
793 | cblk->npasses += newpasses; | |
794 | } | |
795 | } | |
796 | jpeg2000_flush(s); | |
797 | ||
798 | if (codsty->csty & JPEG2000_CSTY_EPH) { | |
799 | if (bytestream2_peek_be16(&s->g) == JPEG2000_EPH) | |
800 | bytestream2_skip(&s->g, 2); | |
801 | else | |
802 | av_log(s->avctx, AV_LOG_ERROR, "EPH marker not found.\n"); | |
803 | } | |
804 | ||
805 | for (bandno = 0; bandno < rlevel->nbands; bandno++) { | |
806 | Jpeg2000Band *band = rlevel->band + bandno; | |
807 | Jpeg2000Prec *prec = band->prec + precno; | |
808 | ||
809 | nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width; | |
810 | for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) { | |
811 | Jpeg2000Cblk *cblk = prec->cblk + cblkno; | |
812 | if ( bytestream2_get_bytes_left(&s->g) < cblk->lengthinc | |
813 | || sizeof(cblk->data) < cblk->length + cblk->lengthinc + 2 | |
814 | ) { | |
815 | av_log(s->avctx, AV_LOG_ERROR, | |
816 | "Block length %"PRIu16" or lengthinc %d is too large\n", | |
817 | cblk->length, cblk->lengthinc); | |
818 | return AVERROR_INVALIDDATA; | |
819 | } | |
820 | ||
821 | bytestream2_get_bufferu(&s->g, cblk->data + cblk->length, cblk->lengthinc); | |
822 | cblk->length += cblk->lengthinc; | |
823 | cblk->lengthinc = 0; | |
824 | } | |
825 | } | |
826 | return 0; | |
827 | } | |
828 | ||
829 | static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile) | |
830 | { | |
831 | int ret = 0; | |
832 | int layno, reslevelno, compno, precno, ok_reslevel; | |
833 | int x, y; | |
834 | ||
835 | s->bit_index = 8; | |
836 | switch (tile->codsty[0].prog_order) { | |
837 | case JPEG2000_PGOD_RLCP: | |
838 | avpriv_request_sample(s->avctx, "Progression order RLCP"); | |
839 | ||
840 | case JPEG2000_PGOD_LRCP: | |
841 | for (layno = 0; layno < tile->codsty[0].nlayers; layno++) { | |
842 | ok_reslevel = 1; | |
843 | for (reslevelno = 0; ok_reslevel; reslevelno++) { | |
844 | ok_reslevel = 0; | |
845 | for (compno = 0; compno < s->ncomponents; compno++) { | |
846 | Jpeg2000CodingStyle *codsty = tile->codsty + compno; | |
847 | Jpeg2000QuantStyle *qntsty = tile->qntsty + compno; | |
848 | if (reslevelno < codsty->nreslevels) { | |
849 | Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel + | |
850 | reslevelno; | |
851 | ok_reslevel = 1; | |
852 | for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) | |
853 | if ((ret = jpeg2000_decode_packet(s, | |
854 | codsty, rlevel, | |
855 | precno, layno, | |
856 | qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0), | |
857 | qntsty->nguardbits)) < 0) | |
858 | return ret; | |
859 | } | |
860 | } | |
861 | } | |
862 | } | |
863 | break; | |
864 | ||
865 | case JPEG2000_PGOD_CPRL: | |
866 | for (compno = 0; compno < s->ncomponents; compno++) { | |
867 | Jpeg2000CodingStyle *codsty = tile->codsty + compno; | |
868 | Jpeg2000QuantStyle *qntsty = tile->qntsty + compno; | |
869 | ||
870 | /* Set bit stream buffer address according to tile-part. | |
871 | * For DCinema one tile-part per component, so can be | |
872 | * indexed by component. */ | |
873 | s->g = tile->tile_part[compno].tpg; | |
874 | ||
875 | /* Position loop (y axis) | |
876 | * TODO: Automate computing of step 256. | |
877 | * Fixed here, but to be computed before entering here. */ | |
878 | for (y = 0; y < s->height; y += 256) { | |
879 | /* Position loop (y axis) | |
880 | * TODO: automate computing of step 256. | |
881 | * Fixed here, but to be computed before entering here. */ | |
882 | for (x = 0; x < s->width; x += 256) { | |
883 | for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { | |
884 | uint16_t prcx, prcy; | |
885 | uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r | |
886 | Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel + reslevelno; | |
887 | ||
888 | if (!((y % (1 << (rlevel->log2_prec_height + reducedresno)) == 0) || | |
889 | (y == 0))) // TODO: 2nd condition simplified as try0 always =0 for dcinema | |
890 | continue; | |
891 | ||
892 | if (!((x % (1 << (rlevel->log2_prec_width + reducedresno)) == 0) || | |
893 | (x == 0))) // TODO: 2nd condition simplified as try0 always =0 for dcinema | |
894 | continue; | |
895 | ||
896 | // check if a precinct exists | |
897 | prcx = ff_jpeg2000_ceildivpow2(x, reducedresno) >> rlevel->log2_prec_width; | |
898 | prcy = ff_jpeg2000_ceildivpow2(y, reducedresno) >> rlevel->log2_prec_height; | |
899 | precno = prcx + rlevel->num_precincts_x * prcy; | |
900 | ||
901 | if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) | |
902 | return AVERROR_PATCHWELCOME; | |
903 | ||
904 | for (layno = 0; layno < tile->codsty[0].nlayers; layno++) { | |
905 | if ((ret = jpeg2000_decode_packet(s, codsty, rlevel, | |
906 | precno, layno, | |
907 | qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0), | |
908 | qntsty->nguardbits)) < 0) | |
909 | return ret; | |
910 | } | |
911 | } | |
912 | } | |
913 | } | |
914 | } | |
915 | break; | |
916 | ||
917 | case JPEG2000_PGOD_RPCL: | |
918 | avpriv_request_sample(s->avctx, "Progression order RPCL"); | |
919 | ret = AVERROR_PATCHWELCOME; | |
920 | break; | |
921 | ||
922 | case JPEG2000_PGOD_PCRL: | |
923 | avpriv_request_sample(s->avctx, "Progression order PCRL"); | |
924 | ret = AVERROR_PATCHWELCOME; | |
925 | break; | |
926 | ||
927 | default: | |
928 | break; | |
929 | } | |
930 | ||
931 | /* EOC marker reached */ | |
932 | bytestream2_skip(&s->g, 2); | |
933 | ||
934 | return ret; | |
935 | } | |
936 | ||
937 | /* TIER-1 routines */ | |
938 | static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, | |
939 | int bpno, int bandno, int bpass_csty_symbol, | |
940 | int vert_causal_ctx_csty_symbol) | |
941 | { | |
942 | int mask = 3 << (bpno - 1), y0, x, y; | |
943 | ||
944 | for (y0 = 0; y0 < height; y0 += 4) | |
945 | for (x = 0; x < width; x++) | |
946 | for (y = y0; y < height && y < y0 + 4; y++) { | |
947 | if ((t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB) | |
948 | && !(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { | |
949 | int flags_mask = -1; | |
950 | if (vert_causal_ctx_csty_symbol && y == y0 + 3) | |
951 | flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE); | |
952 | if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))) { | |
953 | int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit); | |
954 | if (bpass_csty_symbol) | |
955 | t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask; | |
956 | else | |
957 | t1->data[y][x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ? | |
958 | -mask : mask; | |
959 | ||
960 | ff_jpeg2000_set_significance(t1, x, y, | |
961 | t1->data[y][x] < 0); | |
962 | } | |
963 | t1->flags[y + 1][x + 1] |= JPEG2000_T1_VIS; | |
964 | } | |
965 | } | |
966 | } | |
967 | ||
968 | static void decode_refpass(Jpeg2000T1Context *t1, int width, int height, | |
969 | int bpno) | |
970 | { | |
971 | int phalf, nhalf; | |
972 | int y0, x, y; | |
973 | ||
974 | phalf = 1 << (bpno - 1); | |
975 | nhalf = -phalf; | |
976 | ||
977 | for (y0 = 0; y0 < height; y0 += 4) | |
978 | for (x = 0; x < width; x++) | |
979 | for (y = y0; y < height && y < y0 + 4; y++) | |
980 | if ((t1->flags[y + 1][x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG) { | |
981 | int ctxno = ff_jpeg2000_getrefctxno(t1->flags[y + 1][x + 1]); | |
982 | int r = ff_mqc_decode(&t1->mqc, | |
983 | t1->mqc.cx_states + ctxno) | |
984 | ? phalf : nhalf; | |
985 | t1->data[y][x] += t1->data[y][x] < 0 ? -r : r; | |
986 | t1->flags[y + 1][x + 1] |= JPEG2000_T1_REF; | |
987 | } | |
988 | } | |
989 | ||
990 | static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, | |
991 | int width, int height, int bpno, int bandno, | |
992 | int seg_symbols, int vert_causal_ctx_csty_symbol) | |
993 | { | |
994 | int mask = 3 << (bpno - 1), y0, x, y, runlen, dec; | |
995 | ||
996 | for (y0 = 0; y0 < height; y0 += 4) { | |
997 | for (x = 0; x < width; x++) { | |
998 | if (y0 + 3 < height && | |
999 | !((t1->flags[y0 + 1][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || | |
1000 | (t1->flags[y0 + 2][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || | |
1001 | (t1->flags[y0 + 3][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || | |
1002 | (t1->flags[y0 + 4][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)))) { | |
1003 | if (!ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL)) | |
1004 | continue; | |
1005 | runlen = ff_mqc_decode(&t1->mqc, | |
1006 | t1->mqc.cx_states + MQC_CX_UNI); | |
1007 | runlen = (runlen << 1) | ff_mqc_decode(&t1->mqc, | |
1008 | t1->mqc.cx_states + | |
1009 | MQC_CX_UNI); | |
1010 | dec = 1; | |
1011 | } else { | |
1012 | runlen = 0; | |
1013 | dec = 0; | |
1014 | } | |
1015 | ||
1016 | for (y = y0 + runlen; y < y0 + 4 && y < height; y++) { | |
1017 | if (!dec) { | |
1018 | if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { | |
1019 | int flags_mask = -1; | |
1020 | if (vert_causal_ctx_csty_symbol && y == y0 + 3) | |
1021 | flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE); | |
1022 | dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, | |
1023 | bandno)); | |
1024 | } | |
1025 | } | |
1026 | if (dec) { | |
1027 | int xorbit; | |
1028 | int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y + 1][x + 1], | |
1029 | &xorbit); | |
1030 | t1->data[y][x] = (ff_mqc_decode(&t1->mqc, | |
1031 | t1->mqc.cx_states + ctxno) ^ | |
1032 | xorbit) | |
1033 | ? -mask : mask; | |
1034 | ff_jpeg2000_set_significance(t1, x, y, t1->data[y][x] < 0); | |
1035 | } | |
1036 | dec = 0; | |
1037 | t1->flags[y + 1][x + 1] &= ~JPEG2000_T1_VIS; | |
1038 | } | |
1039 | } | |
1040 | } | |
1041 | if (seg_symbols) { | |
1042 | int val; | |
1043 | val = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI); | |
1044 | val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI); | |
1045 | val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI); | |
1046 | val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI); | |
1047 | if (val != 0xa) | |
1048 | av_log(s->avctx, AV_LOG_ERROR, | |
1049 | "Segmentation symbol value incorrect\n"); | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, | |
1054 | Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, | |
1055 | int width, int height, int bandpos) | |
1056 | { | |
1057 | int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y; | |
1058 | int clnpass_cnt = 0; | |
1059 | int bpass_csty_symbol = codsty->cblk_style & JPEG2000_CBLK_BYPASS; | |
1060 | int vert_causal_ctx_csty_symbol = codsty->cblk_style & JPEG2000_CBLK_VSC; | |
1061 | ||
1062 | av_assert0(width <= JPEG2000_MAX_CBLKW); | |
1063 | av_assert0(height <= JPEG2000_MAX_CBLKH); | |
1064 | ||
1065 | for (y = 0; y < height; y++) | |
1066 | memset(t1->data[y], 0, width * sizeof(**t1->data)); | |
1067 | ||
1068 | /* If code-block contains no compressed data: nothing to do. */ | |
1069 | if (!cblk->length) | |
1070 | return 0; | |
1071 | ||
1072 | for (y = 0; y < height + 2; y++) | |
1073 | memset(t1->flags[y], 0, (width + 2) * sizeof(**t1->flags)); | |
1074 | ||
1075 | cblk->data[cblk->length] = 0xff; | |
1076 | cblk->data[cblk->length+1] = 0xff; | |
1077 | ff_mqc_initdec(&t1->mqc, cblk->data); | |
1078 | ||
1079 | while (passno--) { | |
1080 | switch(pass_t) { | |
1081 | case 0: | |
1082 | decode_sigpass(t1, width, height, bpno + 1, bandpos, | |
1083 | bpass_csty_symbol && (clnpass_cnt >= 4), | |
1084 | vert_causal_ctx_csty_symbol); | |
1085 | break; | |
1086 | case 1: | |
1087 | decode_refpass(t1, width, height, bpno + 1); | |
1088 | if (bpass_csty_symbol && clnpass_cnt >= 4) | |
1089 | ff_mqc_initdec(&t1->mqc, cblk->data); | |
1090 | break; | |
1091 | case 2: | |
1092 | decode_clnpass(s, t1, width, height, bpno + 1, bandpos, | |
1093 | codsty->cblk_style & JPEG2000_CBLK_SEGSYM, | |
1094 | vert_causal_ctx_csty_symbol); | |
1095 | clnpass_cnt = clnpass_cnt + 1; | |
1096 | if (bpass_csty_symbol && clnpass_cnt >= 4) | |
1097 | ff_mqc_initdec(&t1->mqc, cblk->data); | |
1098 | break; | |
1099 | } | |
1100 | ||
1101 | pass_t++; | |
1102 | if (pass_t == 3) { | |
1103 | bpno--; | |
1104 | pass_t = 0; | |
1105 | } | |
1106 | } | |
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | /* TODO: Verify dequantization for lossless case | |
1111 | * comp->data can be float or int | |
1112 | * band->stepsize can be float or int | |
1113 | * depending on the type of DWT transformation. | |
1114 | * see ISO/IEC 15444-1:2002 A.6.1 */ | |
1115 | ||
1116 | /* Float dequantization of a codeblock.*/ | |
1117 | static void dequantization_float(int x, int y, Jpeg2000Cblk *cblk, | |
1118 | Jpeg2000Component *comp, | |
1119 | Jpeg2000T1Context *t1, Jpeg2000Band *band) | |
1120 | { | |
1121 | int i, j; | |
1122 | int w = cblk->coord[0][1] - cblk->coord[0][0]; | |
1123 | for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) { | |
1124 | float *datap = &comp->f_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x]; | |
1125 | int *src = t1->data[j]; | |
1126 | for (i = 0; i < w; ++i) | |
1127 | datap[i] = src[i] * band->f_stepsize; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | /* Integer dequantization of a codeblock.*/ | |
1132 | static void dequantization_int(int x, int y, Jpeg2000Cblk *cblk, | |
1133 | Jpeg2000Component *comp, | |
1134 | Jpeg2000T1Context *t1, Jpeg2000Band *band) | |
1135 | { | |
1136 | int i, j; | |
1137 | int w = cblk->coord[0][1] - cblk->coord[0][0]; | |
1138 | for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) { | |
1139 | int32_t *datap = &comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x]; | |
1140 | int *src = t1->data[j]; | |
1141 | for (i = 0; i < w; ++i) | |
1142 | datap[i] = (src[i] * band->i_stepsize + (1 << 14)) >> 15; | |
1143 | } | |
1144 | } | |
1145 | ||
f6fa7814 | 1146 | static inline void mct_decode(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile) |
2ba45a60 DM |
1147 | { |
1148 | int i, csize = 1; | |
f6fa7814 | 1149 | void *src[3]; |
2ba45a60 DM |
1150 | |
1151 | for (i = 1; i < 3; i++) | |
1152 | if (tile->codsty[0].transform != tile->codsty[i].transform) { | |
1153 | av_log(s->avctx, AV_LOG_ERROR, "Transforms mismatch, MCT not supported\n"); | |
1154 | return; | |
1155 | } | |
1156 | ||
1157 | for (i = 0; i < 3; i++) | |
1158 | if (tile->codsty[0].transform == FF_DWT97) | |
f6fa7814 | 1159 | src[i] = tile->comp[i].f_data; |
2ba45a60 | 1160 | else |
f6fa7814 | 1161 | src[i] = tile->comp[i].i_data; |
2ba45a60 DM |
1162 | |
1163 | for (i = 0; i < 2; i++) | |
1164 | csize *= tile->comp[0].coord[i][1] - tile->comp[0].coord[i][0]; | |
1165 | ||
f6fa7814 | 1166 | s->dsp.mct_decode[tile->codsty[0].transform](src[0], src[1], src[2], csize); |
2ba45a60 DM |
1167 | } |
1168 | ||
1169 | static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, | |
1170 | AVFrame *picture) | |
1171 | { | |
1172 | const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(s->avctx->pix_fmt); | |
1173 | int compno, reslevelno, bandno; | |
1174 | int x, y; | |
1175 | int planar = !!(pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR); | |
1176 | int pixelsize = planar ? 1 : pixdesc->nb_components; | |
1177 | ||
1178 | uint8_t *line; | |
1179 | Jpeg2000T1Context t1; | |
1180 | ||
1181 | /* Loop on tile components */ | |
1182 | for (compno = 0; compno < s->ncomponents; compno++) { | |
1183 | Jpeg2000Component *comp = tile->comp + compno; | |
1184 | Jpeg2000CodingStyle *codsty = tile->codsty + compno; | |
1185 | ||
1186 | /* Loop on resolution levels */ | |
1187 | for (reslevelno = 0; reslevelno < codsty->nreslevels2decode; reslevelno++) { | |
1188 | Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; | |
1189 | /* Loop on bands */ | |
1190 | for (bandno = 0; bandno < rlevel->nbands; bandno++) { | |
1191 | int nb_precincts, precno; | |
1192 | Jpeg2000Band *band = rlevel->band + bandno; | |
1193 | int cblkno = 0, bandpos; | |
1194 | ||
1195 | bandpos = bandno + (reslevelno > 0); | |
1196 | ||
1197 | if (band->coord[0][0] == band->coord[0][1] || | |
1198 | band->coord[1][0] == band->coord[1][1]) | |
1199 | continue; | |
1200 | ||
1201 | nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y; | |
1202 | /* Loop on precincts */ | |
1203 | for (precno = 0; precno < nb_precincts; precno++) { | |
1204 | Jpeg2000Prec *prec = band->prec + precno; | |
1205 | ||
1206 | /* Loop on codeblocks */ | |
1207 | for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { | |
1208 | int x, y; | |
1209 | Jpeg2000Cblk *cblk = prec->cblk + cblkno; | |
1210 | decode_cblk(s, codsty, &t1, cblk, | |
1211 | cblk->coord[0][1] - cblk->coord[0][0], | |
1212 | cblk->coord[1][1] - cblk->coord[1][0], | |
1213 | bandpos); | |
1214 | ||
1215 | x = cblk->coord[0][0]; | |
1216 | y = cblk->coord[1][0]; | |
1217 | ||
1218 | if (codsty->transform == FF_DWT97) | |
1219 | dequantization_float(x, y, cblk, comp, &t1, band); | |
1220 | else | |
1221 | dequantization_int(x, y, cblk, comp, &t1, band); | |
1222 | } /* end cblk */ | |
1223 | } /*end prec */ | |
1224 | } /* end band */ | |
1225 | } /* end reslevel */ | |
1226 | ||
1227 | /* inverse DWT */ | |
1228 | ff_dwt_decode(&comp->dwt, codsty->transform == FF_DWT97 ? (void*)comp->f_data : (void*)comp->i_data); | |
1229 | } /*end comp */ | |
1230 | ||
1231 | /* inverse MCT transformation */ | |
1232 | if (tile->codsty[0].mct) | |
1233 | mct_decode(s, tile); | |
1234 | ||
1235 | if (s->cdef[0] < 0) { | |
1236 | for (x = 0; x < s->ncomponents; x++) | |
1237 | s->cdef[x] = x + 1; | |
1238 | if ((s->ncomponents & 1) == 0) | |
1239 | s->cdef[s->ncomponents-1] = 0; | |
1240 | } | |
1241 | ||
1242 | if (s->precision <= 8) { | |
1243 | for (compno = 0; compno < s->ncomponents; compno++) { | |
1244 | Jpeg2000Component *comp = tile->comp + compno; | |
1245 | Jpeg2000CodingStyle *codsty = tile->codsty + compno; | |
1246 | float *datap = comp->f_data; | |
1247 | int32_t *i_datap = comp->i_data; | |
1248 | int cbps = s->cbps[compno]; | |
1249 | int w = tile->comp[compno].coord[0][1] - s->image_offset_x; | |
1250 | int plane = 0; | |
1251 | ||
1252 | if (planar) | |
1253 | plane = s->cdef[compno] ? s->cdef[compno]-1 : (s->ncomponents-1); | |
1254 | ||
1255 | ||
1256 | y = tile->comp[compno].coord[1][0] - s->image_offset_y; | |
1257 | line = picture->data[plane] + y / s->cdy[compno] * picture->linesize[plane]; | |
1258 | for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y += s->cdy[compno]) { | |
1259 | uint8_t *dst; | |
1260 | ||
1261 | x = tile->comp[compno].coord[0][0] - s->image_offset_x; | |
1262 | dst = line + x / s->cdx[compno] * pixelsize + compno*!planar; | |
1263 | ||
1264 | if (codsty->transform == FF_DWT97) { | |
1265 | for (; x < w; x += s->cdx[compno]) { | |
1266 | int val = lrintf(*datap) + (1 << (cbps - 1)); | |
1267 | /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ | |
1268 | val = av_clip(val, 0, (1 << cbps) - 1); | |
1269 | *dst = val << (8 - cbps); | |
1270 | datap++; | |
1271 | dst += pixelsize; | |
1272 | } | |
1273 | } else { | |
1274 | for (; x < w; x += s->cdx[compno]) { | |
1275 | int val = *i_datap + (1 << (cbps - 1)); | |
1276 | /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ | |
1277 | val = av_clip(val, 0, (1 << cbps) - 1); | |
1278 | *dst = val << (8 - cbps); | |
1279 | i_datap++; | |
1280 | dst += pixelsize; | |
1281 | } | |
1282 | } | |
1283 | line += picture->linesize[plane]; | |
1284 | } | |
1285 | } | |
1286 | } else { | |
1287 | for (compno = 0; compno < s->ncomponents; compno++) { | |
1288 | Jpeg2000Component *comp = tile->comp + compno; | |
1289 | Jpeg2000CodingStyle *codsty = tile->codsty + compno; | |
1290 | float *datap = comp->f_data; | |
1291 | int32_t *i_datap = comp->i_data; | |
1292 | uint16_t *linel; | |
1293 | int cbps = s->cbps[compno]; | |
1294 | int w = tile->comp[compno].coord[0][1] - s->image_offset_x; | |
1295 | int plane = 0; | |
1296 | ||
1297 | if (planar) | |
1298 | plane = s->cdef[compno] ? s->cdef[compno]-1 : (s->ncomponents-1); | |
1299 | ||
1300 | y = tile->comp[compno].coord[1][0] - s->image_offset_y; | |
1301 | linel = (uint16_t *)picture->data[plane] + y / s->cdy[compno] * (picture->linesize[plane] >> 1); | |
1302 | for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y += s->cdy[compno]) { | |
1303 | uint16_t *dst; | |
1304 | ||
1305 | x = tile->comp[compno].coord[0][0] - s->image_offset_x; | |
1306 | dst = linel + (x / s->cdx[compno] * pixelsize + compno*!planar); | |
1307 | if (codsty->transform == FF_DWT97) { | |
1308 | for (; x < w; x += s-> cdx[compno]) { | |
1309 | int val = lrintf(*datap) + (1 << (cbps - 1)); | |
1310 | /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ | |
1311 | val = av_clip(val, 0, (1 << cbps) - 1); | |
1312 | /* align 12 bit values in little-endian mode */ | |
1313 | *dst = val << (16 - cbps); | |
1314 | datap++; | |
1315 | dst += pixelsize; | |
1316 | } | |
1317 | } else { | |
1318 | for (; x < w; x += s-> cdx[compno]) { | |
1319 | int val = *i_datap + (1 << (cbps - 1)); | |
1320 | /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ | |
1321 | val = av_clip(val, 0, (1 << cbps) - 1); | |
1322 | /* align 12 bit values in little-endian mode */ | |
1323 | *dst = val << (16 - cbps); | |
1324 | i_datap++; | |
1325 | dst += pixelsize; | |
1326 | } | |
1327 | } | |
1328 | linel += picture->linesize[plane] >> 1; | |
1329 | } | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s) | |
1337 | { | |
1338 | int tileno, compno; | |
1339 | for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) { | |
1340 | if (s->tile[tileno].comp) { | |
1341 | for (compno = 0; compno < s->ncomponents; compno++) { | |
1342 | Jpeg2000Component *comp = s->tile[tileno].comp + compno; | |
1343 | Jpeg2000CodingStyle *codsty = s->tile[tileno].codsty + compno; | |
1344 | ||
1345 | ff_jpeg2000_cleanup(comp, codsty); | |
1346 | } | |
1347 | av_freep(&s->tile[tileno].comp); | |
1348 | } | |
1349 | } | |
1350 | av_freep(&s->tile); | |
1351 | memset(s->codsty, 0, sizeof(s->codsty)); | |
1352 | memset(s->qntsty, 0, sizeof(s->qntsty)); | |
1353 | s->numXtiles = s->numYtiles = 0; | |
1354 | } | |
1355 | ||
1356 | static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) | |
1357 | { | |
1358 | Jpeg2000CodingStyle *codsty = s->codsty; | |
1359 | Jpeg2000QuantStyle *qntsty = s->qntsty; | |
1360 | uint8_t *properties = s->properties; | |
1361 | ||
1362 | for (;;) { | |
1363 | int len, ret = 0; | |
1364 | uint16_t marker; | |
1365 | int oldpos; | |
1366 | ||
1367 | if (bytestream2_get_bytes_left(&s->g) < 2) { | |
1368 | av_log(s->avctx, AV_LOG_ERROR, "Missing EOC\n"); | |
1369 | break; | |
1370 | } | |
1371 | ||
1372 | marker = bytestream2_get_be16u(&s->g); | |
1373 | oldpos = bytestream2_tell(&s->g); | |
1374 | ||
1375 | if (marker == JPEG2000_SOD) { | |
1376 | Jpeg2000Tile *tile; | |
1377 | Jpeg2000TilePart *tp; | |
1378 | ||
1379 | if (!s->tile) { | |
1380 | av_log(s->avctx, AV_LOG_ERROR, "Missing SIZ\n"); | |
1381 | return AVERROR_INVALIDDATA; | |
1382 | } | |
1383 | if (s->curtileno < 0) { | |
1384 | av_log(s->avctx, AV_LOG_ERROR, "Missing SOT\n"); | |
1385 | return AVERROR_INVALIDDATA; | |
1386 | } | |
1387 | ||
1388 | tile = s->tile + s->curtileno; | |
1389 | tp = tile->tile_part + tile->tp_idx; | |
1390 | if (tp->tp_end < s->g.buffer) { | |
1391 | av_log(s->avctx, AV_LOG_ERROR, "Invalid tpend\n"); | |
1392 | return AVERROR_INVALIDDATA; | |
1393 | } | |
1394 | bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_end - s->g.buffer); | |
1395 | bytestream2_skip(&s->g, tp->tp_end - s->g.buffer); | |
1396 | ||
1397 | continue; | |
1398 | } | |
1399 | if (marker == JPEG2000_EOC) | |
1400 | break; | |
1401 | ||
1402 | len = bytestream2_get_be16(&s->g); | |
1403 | if (len < 2 || bytestream2_get_bytes_left(&s->g) < len - 2) | |
1404 | return AVERROR_INVALIDDATA; | |
1405 | ||
1406 | switch (marker) { | |
1407 | case JPEG2000_SIZ: | |
1408 | ret = get_siz(s); | |
1409 | if (!s->tile) | |
1410 | s->numXtiles = s->numYtiles = 0; | |
1411 | break; | |
1412 | case JPEG2000_COC: | |
1413 | ret = get_coc(s, codsty, properties); | |
1414 | break; | |
1415 | case JPEG2000_COD: | |
1416 | ret = get_cod(s, codsty, properties); | |
1417 | break; | |
1418 | case JPEG2000_QCC: | |
1419 | ret = get_qcc(s, len, qntsty, properties); | |
1420 | break; | |
1421 | case JPEG2000_QCD: | |
1422 | ret = get_qcd(s, len, qntsty, properties); | |
1423 | break; | |
1424 | case JPEG2000_SOT: | |
1425 | if (!(ret = get_sot(s, len))) { | |
1426 | av_assert1(s->curtileno >= 0); | |
1427 | codsty = s->tile[s->curtileno].codsty; | |
1428 | qntsty = s->tile[s->curtileno].qntsty; | |
1429 | properties = s->tile[s->curtileno].properties; | |
1430 | } | |
1431 | break; | |
1432 | case JPEG2000_COM: | |
1433 | // the comment is ignored | |
1434 | bytestream2_skip(&s->g, len - 2); | |
1435 | break; | |
1436 | case JPEG2000_TLM: | |
1437 | // Tile-part lengths | |
1438 | ret = get_tlm(s, len); | |
1439 | break; | |
1440 | default: | |
1441 | av_log(s->avctx, AV_LOG_ERROR, | |
1442 | "unsupported marker 0x%.4"PRIX16" at pos 0x%X\n", | |
1443 | marker, bytestream2_tell(&s->g) - 4); | |
1444 | bytestream2_skip(&s->g, len - 2); | |
1445 | break; | |
1446 | } | |
1447 | if (bytestream2_tell(&s->g) - oldpos != len || ret) { | |
1448 | av_log(s->avctx, AV_LOG_ERROR, | |
1449 | "error during processing marker segment %.4"PRIx16"\n", | |
1450 | marker); | |
1451 | return ret ? ret : -1; | |
1452 | } | |
1453 | } | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | /* Read bit stream packets --> T2 operation. */ | |
1458 | static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s) | |
1459 | { | |
1460 | int ret = 0; | |
1461 | int tileno; | |
1462 | ||
1463 | for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) { | |
1464 | Jpeg2000Tile *tile = s->tile + tileno; | |
1465 | ||
1466 | if (ret = init_tile(s, tileno)) | |
1467 | return ret; | |
1468 | ||
1469 | s->g = tile->tile_part[0].tpg; | |
1470 | if (ret = jpeg2000_decode_packets(s, tile)) | |
1471 | return ret; | |
1472 | } | |
1473 | ||
1474 | return 0; | |
1475 | } | |
1476 | ||
1477 | static int jp2_find_codestream(Jpeg2000DecoderContext *s) | |
1478 | { | |
1479 | uint32_t atom_size, atom, atom_end; | |
1480 | int search_range = 10; | |
1481 | ||
1482 | while (search_range | |
1483 | && | |
1484 | bytestream2_get_bytes_left(&s->g) >= 8) { | |
1485 | atom_size = bytestream2_get_be32u(&s->g); | |
1486 | atom = bytestream2_get_be32u(&s->g); | |
1487 | atom_end = bytestream2_tell(&s->g) + atom_size - 8; | |
1488 | ||
1489 | if (atom == JP2_CODESTREAM) | |
1490 | return 1; | |
1491 | ||
1492 | if (bytestream2_get_bytes_left(&s->g) < atom_size || atom_end < atom_size) | |
1493 | return 0; | |
1494 | ||
1495 | if (atom == JP2_HEADER && | |
1496 | atom_size >= 16) { | |
1497 | uint32_t atom2_size, atom2, atom2_end; | |
1498 | do { | |
1499 | atom2_size = bytestream2_get_be32u(&s->g); | |
1500 | atom2 = bytestream2_get_be32u(&s->g); | |
1501 | atom2_end = bytestream2_tell(&s->g) + atom2_size - 8; | |
1502 | if (atom2_size < 8 || atom2_end > atom_end || atom2_end < atom2_size) | |
1503 | break; | |
1504 | if (atom2 == JP2_CODESTREAM) { | |
1505 | return 1; | |
1506 | } else if (atom2 == MKBETAG('c','o','l','r') && atom2_size >= 7) { | |
1507 | int method = bytestream2_get_byteu(&s->g); | |
1508 | bytestream2_skipu(&s->g, 2); | |
1509 | if (method == 1) { | |
1510 | s->colour_space = bytestream2_get_be32u(&s->g); | |
1511 | } | |
1512 | } else if (atom2 == MKBETAG('p','c','l','r') && atom2_size >= 6) { | |
1513 | int i, size, colour_count, colour_channels, colour_depth[3]; | |
1514 | uint32_t r, g, b; | |
1515 | colour_count = bytestream2_get_be16u(&s->g); | |
1516 | colour_channels = bytestream2_get_byteu(&s->g); | |
1517 | // FIXME: Do not ignore channel_sign | |
1518 | colour_depth[0] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1; | |
1519 | colour_depth[1] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1; | |
1520 | colour_depth[2] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1; | |
1521 | size = (colour_depth[0] + 7 >> 3) * colour_count + | |
1522 | (colour_depth[1] + 7 >> 3) * colour_count + | |
1523 | (colour_depth[2] + 7 >> 3) * colour_count; | |
1524 | if (colour_count > 256 || | |
1525 | colour_channels != 3 || | |
1526 | colour_depth[0] > 16 || | |
1527 | colour_depth[1] > 16 || | |
1528 | colour_depth[2] > 16 || | |
1529 | atom2_size < size) { | |
1530 | avpriv_request_sample(s->avctx, "Unknown palette"); | |
1531 | bytestream2_seek(&s->g, atom2_end, SEEK_SET); | |
1532 | continue; | |
1533 | } | |
1534 | s->pal8 = 1; | |
1535 | for (i = 0; i < colour_count; i++) { | |
1536 | if (colour_depth[0] <= 8) { | |
1537 | r = bytestream2_get_byteu(&s->g) << 8 - colour_depth[0]; | |
1538 | r |= r >> colour_depth[0]; | |
1539 | } else { | |
1540 | r = bytestream2_get_be16u(&s->g) >> colour_depth[0] - 8; | |
1541 | } | |
1542 | if (colour_depth[1] <= 8) { | |
1543 | g = bytestream2_get_byteu(&s->g) << 8 - colour_depth[1]; | |
1544 | r |= r >> colour_depth[1]; | |
1545 | } else { | |
1546 | g = bytestream2_get_be16u(&s->g) >> colour_depth[1] - 8; | |
1547 | } | |
1548 | if (colour_depth[2] <= 8) { | |
1549 | b = bytestream2_get_byteu(&s->g) << 8 - colour_depth[2]; | |
1550 | r |= r >> colour_depth[2]; | |
1551 | } else { | |
1552 | b = bytestream2_get_be16u(&s->g) >> colour_depth[2] - 8; | |
1553 | } | |
1554 | s->palette[i] = 0xffu << 24 | r << 16 | g << 8 | b; | |
1555 | } | |
1556 | } else if (atom2 == MKBETAG('c','d','e','f') && atom2_size >= 2) { | |
1557 | int n = bytestream2_get_be16u(&s->g); | |
1558 | for (; n>0; n--) { | |
1559 | int cn = bytestream2_get_be16(&s->g); | |
1560 | int av_unused typ = bytestream2_get_be16(&s->g); | |
1561 | int asoc = bytestream2_get_be16(&s->g); | |
1562 | if (cn < 4 || asoc < 4) | |
1563 | s->cdef[cn] = asoc; | |
1564 | } | |
1565 | } | |
1566 | bytestream2_seek(&s->g, atom2_end, SEEK_SET); | |
1567 | } while (atom_end - atom2_end >= 8); | |
1568 | } else { | |
1569 | search_range--; | |
1570 | } | |
1571 | bytestream2_seek(&s->g, atom_end, SEEK_SET); | |
1572 | } | |
1573 | ||
1574 | return 0; | |
1575 | } | |
1576 | ||
f6fa7814 DM |
1577 | static av_cold int jpeg2000_decode_init(AVCodecContext *avctx) |
1578 | { | |
1579 | Jpeg2000DecoderContext *s = avctx->priv_data; | |
1580 | ||
1581 | ff_jpeg2000dsp_init(&s->dsp); | |
1582 | ||
1583 | return 0; | |
1584 | } | |
1585 | ||
2ba45a60 DM |
1586 | static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data, |
1587 | int *got_frame, AVPacket *avpkt) | |
1588 | { | |
1589 | Jpeg2000DecoderContext *s = avctx->priv_data; | |
1590 | ThreadFrame frame = { .f = data }; | |
1591 | AVFrame *picture = data; | |
1592 | int tileno, ret; | |
1593 | ||
1594 | s->avctx = avctx; | |
1595 | bytestream2_init(&s->g, avpkt->data, avpkt->size); | |
1596 | s->curtileno = -1; | |
1597 | memset(s->cdef, -1, sizeof(s->cdef)); | |
1598 | ||
1599 | if (bytestream2_get_bytes_left(&s->g) < 2) { | |
1600 | ret = AVERROR_INVALIDDATA; | |
1601 | goto end; | |
1602 | } | |
1603 | ||
1604 | // check if the image is in jp2 format | |
1605 | if (bytestream2_get_bytes_left(&s->g) >= 12 && | |
1606 | (bytestream2_get_be32u(&s->g) == 12) && | |
1607 | (bytestream2_get_be32u(&s->g) == JP2_SIG_TYPE) && | |
1608 | (bytestream2_get_be32u(&s->g) == JP2_SIG_VALUE)) { | |
1609 | if (!jp2_find_codestream(s)) { | |
1610 | av_log(avctx, AV_LOG_ERROR, | |
1611 | "Could not find Jpeg2000 codestream atom.\n"); | |
1612 | ret = AVERROR_INVALIDDATA; | |
1613 | goto end; | |
1614 | } | |
1615 | } else { | |
1616 | bytestream2_seek(&s->g, 0, SEEK_SET); | |
1617 | } | |
1618 | ||
1619 | while (bytestream2_get_bytes_left(&s->g) >= 3 && bytestream2_peek_be16(&s->g) != JPEG2000_SOC) | |
1620 | bytestream2_skip(&s->g, 1); | |
1621 | ||
1622 | if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) { | |
1623 | av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n"); | |
1624 | ret = AVERROR_INVALIDDATA; | |
1625 | goto end; | |
1626 | } | |
1627 | if (ret = jpeg2000_read_main_headers(s)) | |
1628 | goto end; | |
1629 | ||
1630 | /* get picture buffer */ | |
1631 | if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) | |
1632 | goto end; | |
1633 | picture->pict_type = AV_PICTURE_TYPE_I; | |
1634 | picture->key_frame = 1; | |
1635 | ||
1636 | if (ret = jpeg2000_read_bitstream_packets(s)) | |
1637 | goto end; | |
1638 | ||
1639 | for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) | |
1640 | if (ret = jpeg2000_decode_tile(s, s->tile + tileno, picture)) | |
1641 | goto end; | |
1642 | ||
1643 | jpeg2000_dec_cleanup(s); | |
1644 | ||
1645 | *got_frame = 1; | |
1646 | ||
1647 | if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) | |
1648 | memcpy(picture->data[1], s->palette, 256 * sizeof(uint32_t)); | |
1649 | ||
1650 | return bytestream2_tell(&s->g); | |
1651 | ||
1652 | end: | |
1653 | jpeg2000_dec_cleanup(s); | |
1654 | return ret; | |
1655 | } | |
1656 | ||
1657 | static av_cold void jpeg2000_init_static_data(AVCodec *codec) | |
1658 | { | |
1659 | ff_jpeg2000_init_tier1_luts(); | |
1660 | ff_mqc_init_context_tables(); | |
1661 | } | |
1662 | ||
1663 | #define OFFSET(x) offsetof(Jpeg2000DecoderContext, x) | |
1664 | #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM | |
1665 | ||
1666 | static const AVOption options[] = { | |
1667 | { "lowres", "Lower the decoding resolution by a power of two", | |
1668 | OFFSET(reduction_factor), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, JPEG2000_MAX_RESLEVELS - 1, VD }, | |
1669 | { NULL }, | |
1670 | }; | |
1671 | ||
1672 | static const AVProfile profiles[] = { | |
1673 | { FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_0, "JPEG 2000 codestream restriction 0" }, | |
1674 | { FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_1, "JPEG 2000 codestream restriction 1" }, | |
1675 | { FF_PROFILE_JPEG2000_CSTREAM_NO_RESTRICTION, "JPEG 2000 no codestream restrictions" }, | |
1676 | { FF_PROFILE_JPEG2000_DCINEMA_2K, "JPEG 2000 digital cinema 2K" }, | |
1677 | { FF_PROFILE_JPEG2000_DCINEMA_4K, "JPEG 2000 digital cinema 4K" }, | |
1678 | { FF_PROFILE_UNKNOWN }, | |
1679 | }; | |
1680 | ||
1681 | static const AVClass jpeg2000_class = { | |
1682 | .class_name = "jpeg2000", | |
1683 | .item_name = av_default_item_name, | |
1684 | .option = options, | |
1685 | .version = LIBAVUTIL_VERSION_INT, | |
1686 | }; | |
1687 | ||
1688 | AVCodec ff_jpeg2000_decoder = { | |
1689 | .name = "jpeg2000", | |
1690 | .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"), | |
1691 | .type = AVMEDIA_TYPE_VIDEO, | |
1692 | .id = AV_CODEC_ID_JPEG2000, | |
1693 | .capabilities = CODEC_CAP_FRAME_THREADS, | |
1694 | .priv_data_size = sizeof(Jpeg2000DecoderContext), | |
1695 | .init_static_data = jpeg2000_init_static_data, | |
f6fa7814 | 1696 | .init = jpeg2000_decode_init, |
2ba45a60 DM |
1697 | .decode = jpeg2000_decode_frame, |
1698 | .priv_class = &jpeg2000_class, | |
1699 | .max_lowres = 5, | |
1700 | .profiles = NULL_IF_CONFIG_SMALL(profiles) | |
1701 | }; |