1 /*
2 * JPEG2000 image encoder
3 * Copyright (c) 2007 Kamil Nowosad
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 * **********************************************************************************************************************
22 *
23 *
24 *
25 * This source code incorporates work covered by the following copyright and
26 * permission notice:
27 *
28 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
29 * Copyright (c) 2002-2007, Professor Benoit Macq
30 * Copyright (c) 2001-2003, David Janssens
31 * Copyright (c) 2002-2003, Yannick Verschueren
32 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
33 * Copyright (c) 2005, Herve Drolon, FreeImage Team
34 * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
35 * Copyright (c) 2020, Gautam Ramakrishnan <gautamramk@gmail.com>
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
48 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
51 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
57 * POSSIBILITY OF SUCH DAMAGE.
58 */
59
60
61 /**
62 * JPEG2000 image encoder
63 * @file
64 * @author Kamil Nowosad
65 */
66
67 #include <float.h>
68 #include "avcodec.h"
69 #include "codec_internal.h"
70 #include "encode.h"
71 #include "bytestream.h"
72 #include "jpeg2000.h"
73 #include "version.h"
74 #include "libavutil/common.h"
75 #include "libavutil/pixdesc.h"
76 #include "libavutil/opt.h"
77 #include "libavutil/intreadwrite.h"
78 #include "libavutil/avstring.h"
79 #include "libavutil/thread.h"
80
81 #define NMSEDEC_BITS 7
82 #define NMSEDEC_FRACBITS (NMSEDEC_BITS-1)
83 #define WMSEDEC_SHIFT 13 ///< must be >= 13
84 #define LAMBDA_SCALE (100000000LL << (WMSEDEC_SHIFT - 13))
85
86 #define CODEC_JP2 1
87 #define CODEC_J2K 0
88
89 static int lut_nmsedec_ref [1<<NMSEDEC_BITS],
90 lut_nmsedec_ref0[1<<NMSEDEC_BITS],
91 lut_nmsedec_sig [1<<NMSEDEC_BITS],
92 lut_nmsedec_sig0[1<<NMSEDEC_BITS];
93
94 static const int dwt_norms[2][4][10] = { // [dwt_type][band][rlevel] (multiplied by 10000)
95 {{10000, 19650, 41770, 84030, 169000, 338400, 676900, 1353000, 2706000, 5409000},
96 {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
97 {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
98 {20800, 38650, 83070, 171800, 347100, 695900, 1393000, 2786000, 5572000}},
99
100 {{10000, 15000, 27500, 53750, 106800, 213400, 426700, 853300, 1707000, 3413000},
101 {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
102 {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
103 { 7186, 9218, 15860, 30430, 60190, 120100, 240000, 479700, 959300}}
104 };
105
106 typedef struct {
107 Jpeg2000Component *comp;
108 double *layer_rates;
109 } Jpeg2000Tile;
110
111 typedef struct {
112 AVClass *class;
113 AVCodecContext *avctx;
114 const AVFrame *picture;
115
116 int width, height; ///< image width and height
117 uint8_t cbps[4]; ///< bits per sample in particular components
118 int chroma_shift[2];
119 uint8_t planar;
120 int ncomponents;
121 int tile_width, tile_height; ///< tile size
122 int numXtiles, numYtiles;
123
124 uint8_t *buf_start;
125 uint8_t *buf;
126 uint8_t *buf_end;
127 int bit_index;
128
129 int64_t lambda;
130
131 Jpeg2000CodingStyle codsty;
132 Jpeg2000QuantStyle qntsty;
133
134 Jpeg2000Tile *tile;
135 int layer_rates[100];
136 uint8_t compression_rate_enc; ///< Is compression done using compression ratio?
137
138 int format;
139 int pred;
140 int sop;
141 int eph;
142 int prog;
143 int nlayers;
144 char *lr_str;
145 } Jpeg2000EncoderContext;
146
147
148 /* debug */
149 #if 0
150 #undef ifprintf
151 #undef printf
152
153 static void nspaces(FILE *fd, int n)
154 {
155 while(n--) putc(' ', fd);
156 }
157
158 static void printcomp(Jpeg2000Component *comp)
159 {
160 int i;
161 for (i = 0; i < comp->y1 - comp->y0; i++)
162 ff_jpeg2000_printv(comp->i_data + i * (comp->x1 - comp->x0), comp->x1 - comp->x0);
163 }
164
165 static void dump(Jpeg2000EncoderContext *s, FILE *fd)
166 {
167 int tileno, compno, reslevelno, bandno, precno;
168 fprintf(fd, "XSiz = %d, YSiz = %d, tile_width = %d, tile_height = %d\n"
169 "numXtiles = %d, numYtiles = %d, ncomponents = %d\n"
170 "tiles:\n",
171 s->width, s->height, s->tile_width, s->tile_height,
172 s->numXtiles, s->numYtiles, s->ncomponents);
173 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
174 Jpeg2000Tile *tile = s->tile + tileno;
175 nspaces(fd, 2);
176 fprintf(fd, "tile %d:\n", tileno);
177 for(compno = 0; compno < s->ncomponents; compno++){
178 Jpeg2000Component *comp = tile->comp + compno;
179 nspaces(fd, 4);
180 fprintf(fd, "component %d:\n", compno);
181 nspaces(fd, 4);
182 fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d\n",
183 comp->x0, comp->x1, comp->y0, comp->y1);
184 for(reslevelno = 0; reslevelno < s->nreslevels; reslevelno++){
185 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
186 nspaces(fd, 6);
187 fprintf(fd, "reslevel %d:\n", reslevelno);
188 nspaces(fd, 6);
189 fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d, nbands = %d\n",
190 reslevel->x0, reslevel->x1, reslevel->y0,
191 reslevel->y1, reslevel->nbands);
192 for(bandno = 0; bandno < reslevel->nbands; bandno++){
193 Jpeg2000Band *band = reslevel->band + bandno;
194 nspaces(fd, 8);
195 fprintf(fd, "band %d:\n", bandno);
196 nspaces(fd, 8);
197 fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d,"
198 "codeblock_width = %d, codeblock_height = %d cblknx = %d cblkny = %d\n",
199 band->x0, band->x1,
200 band->y0, band->y1,
201 band->codeblock_width, band->codeblock_height,
202 band->cblknx, band->cblkny);
203 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
204 Jpeg2000Prec *prec = band->prec + precno;
205 nspaces(fd, 10);
206 fprintf(fd, "prec %d:\n", precno);
207 nspaces(fd, 10);
208 fprintf(fd, "xi0 = %d, xi1 = %d, yi0 = %d, yi1 = %d\n",
209 prec->xi0, prec->xi1, prec->yi0, prec->yi1);
210 }
211 }
212 }
213 }
214 }
215 }
216 #endif
217
218 /* bitstream routines */
219
220 /** put n times val bit */
put_bits(Jpeg2000EncoderContext *s, int val, int n)221 static void put_bits(Jpeg2000EncoderContext *s, int val, int n) // TODO: optimize
222 {
223 while (n-- > 0){
224 if (s->bit_index == 8)
225 {
226 s->bit_index = *s->buf == 0xff;
227 *(++s->buf) = 0;
228 }
229 *s->buf |= val << (7 - s->bit_index++);
230 }
231 }
232
233 /** put n least significant bits of a number num */
put_num(Jpeg2000EncoderContext *s, int num, int n)234 static void put_num(Jpeg2000EncoderContext *s, int num, int n)
235 {
236 while(--n >= 0)
237 put_bits(s, (num >> n) & 1, 1);
238 }
239
240 /** flush the bitstream */
j2k_flush(Jpeg2000EncoderContext *s)241 static void j2k_flush(Jpeg2000EncoderContext *s)
242 {
243 if (s->bit_index){
244 s->bit_index = 0;
245 s->buf++;
246 }
247 }
248
249 /* tag tree routines */
250
251 /** code the value stored in node */
tag_tree_code(Jpeg2000EncoderContext *s, Jpeg2000TgtNode *node, int threshold)252 static void tag_tree_code(Jpeg2000EncoderContext *s, Jpeg2000TgtNode *node, int threshold)
253 {
254 Jpeg2000TgtNode *stack[30];
255 int sp = -1, curval = 0;
256
257 while(node->parent){
258 stack[++sp] = node;
259 node = node->parent;
260 }
261
262 while (1) {
263 if (curval > node->temp_val)
264 node->temp_val = curval;
265 else {
266 curval = node->temp_val;
267 }
268
269 if (node->val >= threshold) {
270 put_bits(s, 0, threshold - curval);
271 curval = threshold;
272 } else {
273 put_bits(s, 0, node->val - curval);
274 curval = node->val;
275 if (!node->vis) {
276 put_bits(s, 1, 1);
277 node->vis = 1;
278 }
279 }
280
281 node->temp_val = curval;
282 if (sp < 0)
283 break;
284 node = stack[sp--];
285 }
286 }
287
288 /** update the value in node */
tag_tree_update(Jpeg2000TgtNode *node)289 static void tag_tree_update(Jpeg2000TgtNode *node)
290 {
291 while (node->parent){
292 if (node->parent->val <= node->val)
293 break;
294 node->parent->val = node->val;
295 node = node->parent;
296 }
297 }
298
put_siz(Jpeg2000EncoderContext *s)299 static int put_siz(Jpeg2000EncoderContext *s)
300 {
301 int i;
302
303 if (s->buf_end - s->buf < 40 + 3 * s->ncomponents)
304 return -1;
305
306 bytestream_put_be16(&s->buf, JPEG2000_SIZ);
307 bytestream_put_be16(&s->buf, 38 + 3 * s->ncomponents); // Lsiz
308 bytestream_put_be16(&s->buf, 0); // Rsiz
309 bytestream_put_be32(&s->buf, s->width); // width
310 bytestream_put_be32(&s->buf, s->height); // height
311 bytestream_put_be32(&s->buf, 0); // X0Siz
312 bytestream_put_be32(&s->buf, 0); // Y0Siz
313
314 bytestream_put_be32(&s->buf, s->tile_width); // XTSiz
315 bytestream_put_be32(&s->buf, s->tile_height); // YTSiz
316 bytestream_put_be32(&s->buf, 0); // XT0Siz
317 bytestream_put_be32(&s->buf, 0); // YT0Siz
318 bytestream_put_be16(&s->buf, s->ncomponents); // CSiz
319
320 for (i = 0; i < s->ncomponents; i++){ // Ssiz_i XRsiz_i, YRsiz_i
321 bytestream_put_byte(&s->buf, s->cbps[i] - 1);
322 bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[0]:1);
323 bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[1]:1);
324 }
325 return 0;
326 }
327
put_cod(Jpeg2000EncoderContext *s)328 static int put_cod(Jpeg2000EncoderContext *s)
329 {
330 Jpeg2000CodingStyle *codsty = &s->codsty;
331 uint8_t scod = 0;
332
333 if (s->buf_end - s->buf < 14)
334 return -1;
335
336 bytestream_put_be16(&s->buf, JPEG2000_COD);
337 bytestream_put_be16(&s->buf, 12); // Lcod
338 if (s->sop)
339 scod |= JPEG2000_CSTY_SOP;
340 if (s->eph)
341 scod |= JPEG2000_CSTY_EPH;
342 bytestream_put_byte(&s->buf, scod); // Scod
343 // SGcod
344 bytestream_put_byte(&s->buf, s->prog); // progression level
345 bytestream_put_be16(&s->buf, s->nlayers); // num of layers
346 if(s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){
347 bytestream_put_byte(&s->buf, 0); // unspecified
348 }else{
349 bytestream_put_byte(&s->buf, 0); // unspecified
350 }
351 // SPcod
352 bytestream_put_byte(&s->buf, codsty->nreslevels - 1); // num of decomp. levels
353 bytestream_put_byte(&s->buf, codsty->log2_cblk_width-2); // cblk width
354 bytestream_put_byte(&s->buf, codsty->log2_cblk_height-2); // cblk height
355 bytestream_put_byte(&s->buf, 0); // cblk style
356 bytestream_put_byte(&s->buf, codsty->transform == FF_DWT53); // transformation
357 return 0;
358 }
359
put_qcd(Jpeg2000EncoderContext *s, int compno)360 static int put_qcd(Jpeg2000EncoderContext *s, int compno)
361 {
362 int i, size;
363 Jpeg2000CodingStyle *codsty = &s->codsty;
364 Jpeg2000QuantStyle *qntsty = &s->qntsty;
365
366 if (qntsty->quantsty == JPEG2000_QSTY_NONE)
367 size = 4 + 3 * (codsty->nreslevels-1);
368 else // QSTY_SE
369 size = 5 + 6 * (codsty->nreslevels-1);
370
371 if (s->buf_end - s->buf < size + 2)
372 return -1;
373
374 bytestream_put_be16(&s->buf, JPEG2000_QCD);
375 bytestream_put_be16(&s->buf, size); // LQcd
376 bytestream_put_byte(&s->buf, (qntsty->nguardbits << 5) | qntsty->quantsty); // Sqcd
377 if (qntsty->quantsty == JPEG2000_QSTY_NONE)
378 for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
379 bytestream_put_byte(&s->buf, qntsty->expn[i] << 3);
380 else // QSTY_SE
381 for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
382 bytestream_put_be16(&s->buf, (qntsty->expn[i] << 11) | qntsty->mant[i]);
383 return 0;
384 }
385
put_com(Jpeg2000EncoderContext *s, int compno)386 static int put_com(Jpeg2000EncoderContext *s, int compno)
387 {
388 int size = 4 + strlen(LIBAVCODEC_IDENT);
389
390 if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
391 return 0;
392
393 if (s->buf_end - s->buf < size + 2)
394 return -1;
395
396 bytestream_put_be16(&s->buf, JPEG2000_COM);
397 bytestream_put_be16(&s->buf, size);
398 bytestream_put_be16(&s->buf, 1); // General use (ISO/IEC 8859-15 (Latin) values)
399
400 bytestream_put_buffer(&s->buf, LIBAVCODEC_IDENT, strlen(LIBAVCODEC_IDENT));
401
402 return 0;
403 }
404
put_sot(Jpeg2000EncoderContext *s, int tileno)405 static uint8_t *put_sot(Jpeg2000EncoderContext *s, int tileno)
406 {
407 uint8_t *psotptr;
408
409 if (s->buf_end - s->buf < 12)
410 return NULL;
411
412 bytestream_put_be16(&s->buf, JPEG2000_SOT);
413 bytestream_put_be16(&s->buf, 10); // Lsot
414 bytestream_put_be16(&s->buf, tileno); // Isot
415
416 psotptr = s->buf;
417 bytestream_put_be32(&s->buf, 0); // Psot (filled in later)
418
419 bytestream_put_byte(&s->buf, 0); // TPsot
420 bytestream_put_byte(&s->buf, 1); // TNsot
421 return psotptr;
422 }
423
compute_rates(Jpeg2000EncoderContext* s)424 static void compute_rates(Jpeg2000EncoderContext* s)
425 {
426 int i, j;
427 int layno, compno;
428 for (i = 0; i < s->numYtiles; i++) {
429 for (j = 0; j < s->numXtiles; j++) {
430 Jpeg2000Tile *tile = &s->tile[s->numXtiles * i + j];
431 for (compno = 0; compno < s->ncomponents; compno++) {
432 int tilew = tile->comp[compno].coord[0][1] - tile->comp[compno].coord[0][0];
433 int tileh = tile->comp[compno].coord[1][1] - tile->comp[compno].coord[1][0];
434 int scale = (compno?1 << s->chroma_shift[0]:1) * (compno?1 << s->chroma_shift[1]:1);
435 for (layno = 0; layno < s->nlayers; layno++) {
436 if (s->layer_rates[layno] > 0) {
437 tile->layer_rates[layno] += (double)(tilew * tileh) * s->ncomponents * s->cbps[compno] /
438 (double)(s->layer_rates[layno] * 8 * scale);
439 } else {
440 tile->layer_rates[layno] = 0.0;
441 }
442 }
443 }
444 }
445 }
446
447 }
448
449 /**
450 * compute the sizes of tiles, resolution levels, bands, etc.
451 * allocate memory for them
452 * divide the input image into tile-components
453 */
init_tiles(Jpeg2000EncoderContext *s)454 static int init_tiles(Jpeg2000EncoderContext *s)
455 {
456 int tileno, tilex, tiley, compno;
457 Jpeg2000CodingStyle *codsty = &s->codsty;
458 Jpeg2000QuantStyle *qntsty = &s->qntsty;
459
460 s->numXtiles = ff_jpeg2000_ceildiv(s->width, s->tile_width);
461 s->numYtiles = ff_jpeg2000_ceildiv(s->height, s->tile_height);
462
463 s->tile = av_calloc(s->numXtiles, s->numYtiles * sizeof(Jpeg2000Tile));
464 if (!s->tile)
465 return AVERROR(ENOMEM);
466 for (tileno = 0, tiley = 0; tiley < s->numYtiles; tiley++)
467 for (tilex = 0; tilex < s->numXtiles; tilex++, tileno++){
468 Jpeg2000Tile *tile = s->tile + tileno;
469
470 tile->comp = av_calloc(s->ncomponents, sizeof(*tile->comp));
471 if (!tile->comp)
472 return AVERROR(ENOMEM);
473
474 tile->layer_rates = av_calloc(s->nlayers, sizeof(*tile->layer_rates));
475 if (!tile->layer_rates)
476 return AVERROR(ENOMEM);
477
478 for (compno = 0; compno < s->ncomponents; compno++){
479 Jpeg2000Component *comp = tile->comp + compno;
480 int ret, i, j;
481
482 comp->coord[0][0] = comp->coord_o[0][0] = tilex * s->tile_width;
483 comp->coord[0][1] = comp->coord_o[0][1] = FFMIN((tilex+1)*s->tile_width, s->width);
484 comp->coord[1][0] = comp->coord_o[1][0] = tiley * s->tile_height;
485 comp->coord[1][1] = comp->coord_o[1][1] = FFMIN((tiley+1)*s->tile_height, s->height);
486 if (compno > 0)
487 for (i = 0; i < 2; i++)
488 for (j = 0; j < 2; j++)
489 comp->coord[i][j] = comp->coord_o[i][j] = ff_jpeg2000_ceildivpow2(comp->coord[i][j], s->chroma_shift[i]);
490
491 if ((ret = ff_jpeg2000_init_component(comp,
492 codsty,
493 qntsty,
494 s->cbps[compno],
495 compno?1<<s->chroma_shift[0]:1,
496 compno?1<<s->chroma_shift[1]:1,
497 s->avctx
498 )) < 0)
499 return ret;
500 }
501 }
502 compute_rates(s);
503 return 0;
504 }
505
506 #define COPY_FRAME(D, PIXEL) \
507 static void copy_frame_ ##D(Jpeg2000EncoderContext *s) \
508 { \
509 int tileno, compno, i, y, x; \
510 PIXEL *line; \
511 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ \
512 Jpeg2000Tile *tile = s->tile + tileno; \
513 if (s->planar){ \
514 for (compno = 0; compno < s->ncomponents; compno++){ \
515 Jpeg2000Component *comp = tile->comp + compno; \
516 int *dst = comp->i_data; \
517 int cbps = s->cbps[compno]; \
518 line = (PIXEL*)s->picture->data[compno] \
519 + comp->coord[1][0] * (s->picture->linesize[compno] / sizeof(PIXEL)) \
520 + comp->coord[0][0]; \
521 for (y = comp->coord[1][0]; y < comp->coord[1][1]; y++){ \
522 PIXEL *ptr = line; \
523 for (x = comp->coord[0][0]; x < comp->coord[0][1]; x++) \
524 *dst++ = *ptr++ - (1 << (cbps - 1)); \
525 line += s->picture->linesize[compno] / sizeof(PIXEL); \
526 } \
527 } \
528 } else{ \
529 line = (PIXEL*)s->picture->data[0] + tile->comp[0].coord[1][0] * (s->picture->linesize[0] / sizeof(PIXEL)) \
530 + tile->comp[0].coord[0][0] * s->ncomponents; \
531 \
532 i = 0; \
533 for (y = tile->comp[0].coord[1][0]; y < tile->comp[0].coord[1][1]; y++){ \
534 PIXEL *ptr = line; \
535 for (x = tile->comp[0].coord[0][0]; x < tile->comp[0].coord[0][1]; x++, i++){ \
536 for (compno = 0; compno < s->ncomponents; compno++){ \
537 int cbps = s->cbps[compno]; \
538 tile->comp[compno].i_data[i] = *ptr++ - (1 << (cbps - 1)); \
539 } \
540 } \
541 line += s->picture->linesize[0] / sizeof(PIXEL); \
542 } \
543 } \
544 } \
545 }
546
547 COPY_FRAME(8, uint8_t)
548 COPY_FRAME(16, uint16_t)
549
init_quantization(Jpeg2000EncoderContext *s)550 static void init_quantization(Jpeg2000EncoderContext *s)
551 {
552 int compno, reslevelno, bandno;
553 Jpeg2000QuantStyle *qntsty = &s->qntsty;
554 Jpeg2000CodingStyle *codsty = &s->codsty;
555
556 for (compno = 0; compno < s->ncomponents; compno++){
557 int gbandno = 0;
558 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
559 int nbands, lev = codsty->nreslevels - reslevelno - 1;
560 nbands = reslevelno ? 3 : 1;
561 for (bandno = 0; bandno < nbands; bandno++, gbandno++){
562 int expn, mant = 0;
563
564 if (codsty->transform == FF_DWT97_INT){
565 int bandpos = bandno + (reslevelno>0),
566 ss = 81920000 / dwt_norms[0][bandpos][lev],
567 log = av_log2(ss);
568 mant = (11 - log < 0 ? ss >> log - 11 : ss << 11 - log) & 0x7ff;
569 expn = s->cbps[compno] - log + 13;
570 } else
571 expn = ((bandno&2)>>1) + (reslevelno>0) + s->cbps[compno];
572
573 qntsty->expn[gbandno] = expn;
574 qntsty->mant[gbandno] = mant;
575 }
576 }
577 }
578 }
579
init_luts(void)580 static void init_luts(void)
581 {
582 int i, a,
583 mask = ~((1<<NMSEDEC_FRACBITS)-1);
584
585 for (i = 0; i < (1 << NMSEDEC_BITS); i++){
586 lut_nmsedec_sig[i] = FFMAX((3 * i << (13 - NMSEDEC_FRACBITS)) - (9 << 11), 0);
587 lut_nmsedec_sig0[i] = FFMAX((i*i + (1<<NMSEDEC_FRACBITS-1) & mask) << 1, 0);
588
589 a = (i >> (NMSEDEC_BITS-2)&2) + 1;
590 lut_nmsedec_ref[i] = FFMAX((a - 2) * (i << (13 - NMSEDEC_FRACBITS)) +
591 (1 << 13) - (a * a << 11), 0);
592 lut_nmsedec_ref0[i] = FFMAX(((i * i - (i << NMSEDEC_BITS) + (1 << 2 * NMSEDEC_FRACBITS) + (1 << (NMSEDEC_FRACBITS - 1))) & mask)
593 << 1, 0);
594 }
595 ff_jpeg2000_init_tier1_luts();
596 }
597
598 /* tier-1 routines */
getnmsedec_sig(int x, int bpno)599 static int getnmsedec_sig(int x, int bpno)
600 {
601 if (bpno > NMSEDEC_FRACBITS)
602 return lut_nmsedec_sig[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
603 return lut_nmsedec_sig0[x & ((1 << NMSEDEC_BITS) - 1)];
604 }
605
getnmsedec_ref(int x, int bpno)606 static int getnmsedec_ref(int x, int bpno)
607 {
608 if (bpno > NMSEDEC_FRACBITS)
609 return lut_nmsedec_ref[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
610 return lut_nmsedec_ref0[x & ((1 << NMSEDEC_BITS) - 1)];
611 }
612
encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)613 static void encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
614 {
615 int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
616 for (y0 = 0; y0 < height; y0 += 4)
617 for (x = 0; x < width; x++)
618 for (y = y0; y < height && y < y0+4; y++){
619 if (!(t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG) && (t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG_NB)){
620 int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno),
621 bit = t1->data[(y) * t1->stride + x] & mask ? 1 : 0;
622 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
623 if (bit){
624 int xorbit;
625 int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit);
626 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit);
627 *nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
628 ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15);
629 }
630 t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_VIS;
631 }
632 }
633 }
634
encode_refpass(Jpeg2000T1Context *t1, int width, int height, int *nmsedec, int bpno)635 static void encode_refpass(Jpeg2000T1Context *t1, int width, int height, int *nmsedec, int bpno)
636 {
637 int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
638 for (y0 = 0; y0 < height; y0 += 4)
639 for (x = 0; x < width; x++)
640 for (y = y0; y < height && y < y0+4; y++)
641 if ((t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG){
642 int ctxno = ff_jpeg2000_getrefctxno(t1->flags[(y+1) * t1->stride + x+1]);
643 *nmsedec += getnmsedec_ref(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
644 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0);
645 t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_REF;
646 }
647 }
648
encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)649 static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
650 {
651 int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
652 for (y0 = 0; y0 < height; y0 += 4)
653 for (x = 0; x < width; x++){
654 if (y0 + 3 < height && !(
655 (t1->flags[(y0+1) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
656 (t1->flags[(y0+2) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
657 (t1->flags[(y0+3) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
658 (t1->flags[(y0+4) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG))))
659 {
660 // aggregation mode
661 int rlen;
662 for (rlen = 0; rlen < 4; rlen++)
663 if (t1->data[(y0+rlen) * t1->stride + x] & mask)
664 break;
665 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL, rlen != 4);
666 if (rlen == 4)
667 continue;
668 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen >> 1);
669 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1);
670 for (y = y0 + rlen; y < y0 + 4; y++){
671 if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
672 int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno);
673 if (y > y0 + rlen)
674 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0);
675 if (t1->data[(y) * t1->stride + x] & mask){ // newly significant
676 int xorbit;
677 int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit);
678 *nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
679 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit);
680 ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15);
681 }
682 }
683 t1->flags[(y+1) * t1->stride + x+1] &= ~JPEG2000_T1_VIS;
684 }
685 } else{
686 for (y = y0; y < y0 + 4 && y < height; y++){
687 if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
688 int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno);
689 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0);
690 if (t1->data[(y) * t1->stride + x] & mask){ // newly significant
691 int xorbit;
692 int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit);
693 *nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
694 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit);
695 ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15);
696 }
697 }
698 t1->flags[(y+1) * t1->stride + x+1] &= ~JPEG2000_T1_VIS;
699 }
700 }
701 }
702 }
703
encode_cblk(Jpeg2000EncoderContext *s, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, Jpeg2000Tile *tile, int width, int height, int bandpos, int lev)704 static void encode_cblk(Jpeg2000EncoderContext *s, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, Jpeg2000Tile *tile,
705 int width, int height, int bandpos, int lev)
706 {
707 int pass_t = 2, passno, x, y, max=0, nmsedec, bpno;
708 int64_t wmsedec = 0;
709
710 memset(t1->flags, 0, t1->stride * (height + 2) * sizeof(*t1->flags));
711
712 for (y = 0; y < height; y++){
713 for (x = 0; x < width; x++){
714 if (t1->data[(y) * t1->stride + x] < 0){
715 t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_SGN;
716 t1->data[(y) * t1->stride + x] = -t1->data[(y) * t1->stride + x];
717 }
718 max = FFMAX(max, t1->data[(y) * t1->stride + x]);
719 }
720 }
721
722 if (max == 0){
723 cblk->nonzerobits = 0;
724 } else{
725 cblk->nonzerobits = av_log2(max) + 1 - NMSEDEC_FRACBITS;
726 }
727 bpno = cblk->nonzerobits - 1;
728
729 cblk->data[0] = 0;
730 ff_mqc_initenc(&t1->mqc, cblk->data + 1);
731
732 for (passno = 0; bpno >= 0; passno++){
733 nmsedec=0;
734
735 switch(pass_t){
736 case 0: encode_sigpass(t1, width, height, bandpos, &nmsedec, bpno);
737 break;
738 case 1: encode_refpass(t1, width, height, &nmsedec, bpno);
739 break;
740 case 2: encode_clnpass(t1, width, height, bandpos, &nmsedec, bpno);
741 break;
742 }
743
744 cblk->passes[passno].rate = ff_mqc_flush_to(&t1->mqc, cblk->passes[passno].flushed, &cblk->passes[passno].flushed_len);
745 cblk->passes[passno].rate -= cblk->passes[passno].flushed_len;
746
747 wmsedec += (int64_t)nmsedec << (2*bpno);
748 cblk->passes[passno].disto = wmsedec;
749
750 if (++pass_t == 3){
751 pass_t = 0;
752 bpno--;
753 }
754 }
755 cblk->npasses = passno;
756 cblk->ninclpasses = passno;
757
758 if (passno) {
759 cblk->passes[passno-1].rate = ff_mqc_flush_to(&t1->mqc, cblk->passes[passno-1].flushed, &cblk->passes[passno-1].flushed_len);
760 cblk->passes[passno-1].rate -= cblk->passes[passno-1].flushed_len;
761 }
762 }
763
764 /* tier-2 routines: */
765
putnumpasses(Jpeg2000EncoderContext *s, int n)766 static void putnumpasses(Jpeg2000EncoderContext *s, int n)
767 {
768 if (n == 1)
769 put_num(s, 0, 1);
770 else if (n == 2)
771 put_num(s, 2, 2);
772 else if (n <= 5)
773 put_num(s, 0xc | (n-3), 4);
774 else if (n <= 36)
775 put_num(s, 0x1e0 | (n-6), 9);
776 else
777 put_num(s, 0xff80 | (n-37), 16);
778 }
779
780
encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, int layno, int precno, uint8_t *expn, int numgbits, int packetno, int nlayers)781 static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, int layno,
782 int precno, uint8_t *expn, int numgbits, int packetno,
783 int nlayers)
784 {
785 int bandno, empty = 1;
786 int i;
787 // init bitstream
788 *s->buf = 0;
789 s->bit_index = 0;
790
791 if (s->sop) {
792 bytestream_put_be16(&s->buf, JPEG2000_SOP);
793 bytestream_put_be16(&s->buf, 4);
794 bytestream_put_be16(&s->buf, packetno);
795 }
796 // header
797
798 if (!layno) {
799 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
800 Jpeg2000Band *band = rlevel->band + bandno;
801 if (band->coord[0][0] < band->coord[0][1]
802 && band->coord[1][0] < band->coord[1][1]) {
803 Jpeg2000Prec *prec = band->prec + precno;
804 int nb_cblks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
805 int pos;
806 ff_tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 99);
807 ff_tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 99);
808 for (pos = 0; pos < nb_cblks; pos++) {
809 Jpeg2000Cblk *cblk = &prec->cblk[pos];
810 prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - cblk->nonzerobits;
811 cblk->incl = 0;
812 cblk->lblock = 3;
813 tag_tree_update(prec->zerobits + pos);
814 for (i = 0; i < nlayers; i++) {
815 if (cblk->layers[i].npasses > 0) {
816 prec->cblkincl[pos].val = i;
817 break;
818 }
819 }
820 if (i == nlayers)
821 prec->cblkincl[pos].val = i;
822 tag_tree_update(prec->cblkincl + pos);
823 }
824 }
825 }
826 }
827
828 // is the packet empty?
829 for (bandno = 0; bandno < rlevel->nbands; bandno++){
830 Jpeg2000Band *band = rlevel->band + bandno;
831 if (band->coord[0][0] < band->coord[0][1]
832 && band->coord[1][0] < band->coord[1][1]) {
833 Jpeg2000Prec *prec = band->prec + precno;
834 int nb_cblks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
835 int pos;
836 for (pos = 0; pos < nb_cblks; pos++) {
837 Jpeg2000Cblk *cblk = &prec->cblk[pos];
838 if (cblk->layers[layno].npasses) {
839 empty = 0;
840 break;
841 }
842 }
843 if (!empty)
844 break;
845 }
846 }
847
848 put_bits(s, !empty, 1);
849 if (empty){
850 j2k_flush(s);
851 if (s->eph)
852 bytestream_put_be16(&s->buf, JPEG2000_EPH);
853 return 0;
854 }
855
856 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
857 Jpeg2000Band *band = rlevel->band + bandno;
858 Jpeg2000Prec *prec = band->prec + precno;
859 int yi, xi, pos;
860 int cblknw = prec->nb_codeblocks_width;
861
862 if (band->coord[0][0] == band->coord[0][1]
863 || band->coord[1][0] == band->coord[1][1])
864 continue;
865
866 for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++) {
867 for (xi = 0; xi < cblknw; xi++, pos++){
868 int llen = 0, length;
869 Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
870
871 if (s->buf_end - s->buf < 20) // approximately
872 return -1;
873
874 // inclusion information
875 if (!cblk->incl)
876 tag_tree_code(s, prec->cblkincl + pos, layno + 1);
877 else {
878 put_bits(s, cblk->layers[layno].npasses > 0, 1);
879 }
880
881 if (!cblk->layers[layno].npasses)
882 continue;
883
884 // zerobits information
885 if (!cblk->incl) {
886 tag_tree_code(s, prec->zerobits + pos, 100);
887 cblk->incl = 1;
888 }
889
890 // number of passes
891 putnumpasses(s, cblk->layers[layno].npasses);
892
893 length = cblk->layers[layno].data_len;
894 if (layno == nlayers - 1 && cblk->layers[layno].cum_passes){
895 length += cblk->passes[cblk->layers[layno].cum_passes-1].flushed_len;
896 }
897 if (cblk->lblock + av_log2(cblk->layers[layno].npasses) < av_log2(length) + 1) {
898 llen = av_log2(length) + 1 - cblk->lblock - av_log2(cblk->layers[layno].npasses);
899 }
900
901 // length of code block
902 cblk->lblock += llen;
903 put_bits(s, 1, llen);
904 put_bits(s, 0, 1);
905 put_num(s, length, cblk->lblock + av_log2(cblk->layers[layno].npasses));
906 }
907 }
908 }
909 j2k_flush(s);
910 if (s->eph) {
911 bytestream_put_be16(&s->buf, JPEG2000_EPH);
912 }
913
914 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
915 Jpeg2000Band *band = rlevel->band + bandno;
916 Jpeg2000Prec *prec = band->prec + precno;
917 int yi, cblknw = prec->nb_codeblocks_width;
918 for (yi =0; yi < prec->nb_codeblocks_height; yi++) {
919 int xi;
920 for (xi = 0; xi < cblknw; xi++){
921 Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
922 if (cblk->layers[layno].npasses) {
923 if (s->buf_end - s->buf < cblk->layers[layno].data_len + 2)
924 return -1;
925 bytestream_put_buffer(&s->buf, cblk->layers[layno].data_start + 1, cblk->layers[layno].data_len);
926 if (layno == nlayers - 1 && cblk->layers[layno].cum_passes) {
927 bytestream_put_buffer(&s->buf, cblk->passes[cblk->layers[layno].cum_passes-1].flushed,
928 cblk->passes[cblk->layers[layno].cum_passes-1].flushed_len);
929 }
930 }
931 }
932 }
933 }
934 return 0;
935 }
936
encode_packets(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno, int nlayers)937 static int encode_packets(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno, int nlayers)
938 {
939 int compno, reslevelno, layno, ret;
940 Jpeg2000CodingStyle *codsty = &s->codsty;
941 Jpeg2000QuantStyle *qntsty = &s->qntsty;
942 int packetno = 0;
943 int step_x, step_y;
944 int x, y;
945 int tile_coord[2][2];
946 int col = tileno % s->numXtiles;
947 int row = tileno / s->numXtiles;
948
949 tile_coord[0][0] = col * s->tile_width;
950 tile_coord[0][1] = FFMIN(tile_coord[0][0] + s->tile_width, s->width);
951 tile_coord[1][0] = row * s->tile_height;
952 tile_coord[1][1] = FFMIN(tile_coord[1][0] + s->tile_height, s->height);
953
954 av_log(s->avctx, AV_LOG_DEBUG, "tier2\n");
955 // lay-rlevel-comp-pos progression
956 switch (s->prog) {
957 case JPEG2000_PGOD_LRCP:
958 for (layno = 0; layno < nlayers; layno++) {
959 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
960 for (compno = 0; compno < s->ncomponents; compno++){
961 int precno;
962 Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno;
963 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
964 if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
965 qntsty->nguardbits, packetno++, nlayers)) < 0)
966 return ret;
967 }
968 }
969 }
970 }
971 break;
972 case JPEG2000_PGOD_RLCP:
973 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
974 for (layno = 0; layno < nlayers; layno++) {
975 for (compno = 0; compno < s->ncomponents; compno++){
976 int precno;
977 Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno;
978 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
979 if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
980 qntsty->nguardbits, packetno++, nlayers)) < 0)
981 return ret;
982 }
983 }
984 }
985 }
986 break;
987 case JPEG2000_PGOD_RPCL:
988 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
989 int precno;
990 step_x = 30;
991 step_y = 30;
992 for (compno = 0; compno < s->ncomponents; compno++) {
993 Jpeg2000Component *comp = tile->comp + compno;
994 if (reslevelno < codsty->nreslevels) {
995 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
996 Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
997 step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
998 step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
999 }
1000 }
1001
1002 step_x = 1<<step_x;
1003 step_y = 1<<step_y;
1004 for (y = tile_coord[1][0]; y < tile_coord[1][1]; y = (y/step_y + 1)*step_y) {
1005 for (x = tile_coord[0][0]; x < tile_coord[0][1]; x = (x/step_x + 1)*step_x) {
1006 for (compno = 0; compno < s->ncomponents; compno++) {
1007 Jpeg2000Component *comp = tile->comp + compno;
1008 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1009 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
1010 int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0};
1011 unsigned prcx, prcy;
1012 int trx0, try0;
1013
1014 trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno);
1015 try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno);
1016
1017 if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 ||
1018 (y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height)))))
1019 continue;
1020
1021 if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 ||
1022 (x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width)))))
1023 continue;
1024
1025 // check if a precinct exists
1026 prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width;
1027 prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height;
1028 prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width;
1029 prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height;
1030 precno = prcx + reslevel->num_precincts_x * prcy;
1031
1032 if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) {
1033 av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
1034 prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y);
1035 continue;
1036 }
1037 for (layno = 0; layno < nlayers; layno++) {
1038 if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
1039 qntsty->nguardbits, packetno++, nlayers)) < 0)
1040 return ret;
1041 }
1042 }
1043 }
1044 }
1045 }
1046 break;
1047 case JPEG2000_PGOD_PCRL:
1048 step_x = 32;
1049 step_y = 32;
1050 for (compno = 0; compno < s->ncomponents; compno++) {
1051 Jpeg2000Component *comp = tile->comp + compno;
1052
1053 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
1054 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1055 Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1056 step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
1057 step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
1058 }
1059 }
1060 if (step_x >= 31 || step_y >= 31){
1061 avpriv_request_sample(s->avctx, "PCRL with large step");
1062 return AVERROR_PATCHWELCOME;
1063 }
1064 step_x = 1<<step_x;
1065 step_y = 1<<step_y;
1066
1067 for (y = tile_coord[1][0]; y < tile_coord[1][1]; y = (y/step_y + 1)*step_y) {
1068 for (x = tile_coord[0][0]; x < tile_coord[0][1]; x = (x/step_x + 1)*step_x) {
1069 for (compno = 0; compno < s->ncomponents; compno++) {
1070 Jpeg2000Component *comp = tile->comp + compno;
1071 int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0};
1072
1073 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
1074 unsigned prcx, prcy;
1075 int precno;
1076 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1077 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
1078 int trx0, try0;
1079
1080 trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno);
1081 try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno);
1082
1083 if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 ||
1084 (y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height)))))
1085 continue;
1086
1087 if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 ||
1088 (x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width)))))
1089 continue;
1090
1091 // check if a precinct exists
1092 prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width;
1093 prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height;
1094 prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width;
1095 prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height;
1096
1097 precno = prcx + reslevel->num_precincts_x * prcy;
1098
1099 if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) {
1100 av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
1101 prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y);
1102 continue;
1103 }
1104 for (layno = 0; layno < nlayers; layno++) {
1105 if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
1106 qntsty->nguardbits, packetno++, nlayers)) < 0)
1107 return ret;
1108 }
1109 }
1110 }
1111 }
1112 }
1113 break;
1114 case JPEG2000_PGOD_CPRL:
1115 for (compno = 0; compno < s->ncomponents; compno++) {
1116 Jpeg2000Component *comp = tile->comp + compno;
1117 int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0};
1118 step_x = 32;
1119 step_y = 32;
1120
1121 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
1122 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1123 Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1124 step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
1125 step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
1126 }
1127 if (step_x >= 31 || step_y >= 31){
1128 avpriv_request_sample(s->avctx, "CPRL with large step");
1129 return AVERROR_PATCHWELCOME;
1130 }
1131 step_x = 1<<step_x;
1132 step_y = 1<<step_y;
1133
1134 for (y = tile_coord[1][0]; y < tile_coord[1][1]; y = (y/step_y + 1)*step_y) {
1135 for (x = tile_coord[0][0]; x < tile_coord[0][1]; x = (x/step_x + 1)*step_x) {
1136 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
1137 unsigned prcx, prcy;
1138 int precno;
1139 int trx0, try0;
1140 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1141 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
1142
1143 trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno);
1144 try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno);
1145
1146 if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 ||
1147 (y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height)))))
1148 continue;
1149
1150 if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 ||
1151 (x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width)))))
1152 continue;
1153
1154 // check if a precinct exists
1155 prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width;
1156 prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height;
1157 prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width;
1158 prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height;
1159
1160 precno = prcx + reslevel->num_precincts_x * prcy;
1161
1162 if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) {
1163 av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
1164 prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y);
1165 continue;
1166 }
1167 for (layno = 0; layno < nlayers; layno++) {
1168 if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
1169 qntsty->nguardbits, packetno++, nlayers)) < 0)
1170 return ret;
1171 }
1172 }
1173 }
1174 }
1175 }
1176
1177 }
1178
1179 av_log(s->avctx, AV_LOG_DEBUG, "after tier2\n");
1180 return 0;
1181 }
1182
makelayer(Jpeg2000EncoderContext *s, int layno, double thresh, Jpeg2000Tile* tile, int final)1183 static void makelayer(Jpeg2000EncoderContext *s, int layno, double thresh, Jpeg2000Tile* tile, int final)
1184 {
1185 int compno, resno, bandno, precno, cblkno;
1186 int passno;
1187
1188 for (compno = 0; compno < s->ncomponents; compno++) {
1189 Jpeg2000Component *comp = &tile->comp[compno];
1190
1191 for (resno = 0; resno < s->codsty.nreslevels; resno++) {
1192 Jpeg2000ResLevel *reslevel = comp->reslevel + resno;
1193
1194 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
1195 for (bandno = 0; bandno < reslevel->nbands ; bandno++){
1196 Jpeg2000Band *band = reslevel->band + bandno;
1197 Jpeg2000Prec *prec = band->prec + precno;
1198
1199 for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
1200 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1201 Jpeg2000Layer *layer = &cblk->layers[layno];
1202 int n;
1203
1204 if (layno == 0) {
1205 cblk->ninclpasses = 0;
1206 }
1207
1208 n = cblk->ninclpasses;
1209
1210 if (thresh < 0) {
1211 n = cblk->npasses;
1212 } else {
1213 for (passno = cblk->ninclpasses; passno < cblk->npasses; passno++) {
1214 int32_t dr;
1215 double dd;
1216 Jpeg2000Pass *pass = &cblk->passes[passno];
1217
1218 if (n == 0) {
1219 dr = pass->rate;
1220 dd = pass->disto;
1221 } else {
1222 dr = pass->rate - cblk->passes[n - 1].rate;
1223 dd = pass->disto - cblk->passes[n-1].disto;
1224 }
1225
1226 if (!dr) {
1227 if (dd != 0.0) {
1228 n = passno + 1;
1229 }
1230 continue;
1231 }
1232
1233 if (thresh - (dd / dr) < DBL_EPSILON)
1234 n = passno + 1;
1235 }
1236 }
1237 layer->npasses = n - cblk->ninclpasses;
1238 layer->cum_passes = n;
1239
1240 if (layer->npasses == 0) {
1241 layer->disto = 0;
1242 layer->data_len = 0;
1243 continue;
1244 }
1245
1246 if (cblk->ninclpasses == 0) {
1247 layer->data_len = cblk->passes[n - 1].rate;
1248 layer->data_start = cblk->data;
1249 layer->disto = cblk->passes[n - 1].disto;
1250 } else {
1251 layer->data_len = cblk->passes[n - 1].rate - cblk->passes[cblk->ninclpasses - 1].rate;
1252 layer->data_start = cblk->data + cblk->passes[cblk->ninclpasses - 1].rate;
1253 layer->disto = cblk->passes[n - 1].disto -
1254 cblk->passes[cblk->ninclpasses - 1].disto;
1255 }
1256 if (final) {
1257 cblk->ninclpasses = n;
1258 }
1259 }
1260 }
1261 }
1262 }
1263 }
1264 }
1265
makelayers(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)1266 static void makelayers(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)
1267 {
1268 int precno, compno, reslevelno, bandno, cblkno, lev, passno, layno;
1269 int i;
1270 double min = DBL_MAX;
1271 double max = 0;
1272 double thresh;
1273
1274 Jpeg2000CodingStyle *codsty = &s->codsty;
1275
1276 for (compno = 0; compno < s->ncomponents; compno++){
1277 Jpeg2000Component *comp = tile->comp + compno;
1278
1279 for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
1280 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
1281
1282 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
1283 for (bandno = 0; bandno < reslevel->nbands ; bandno++){
1284 Jpeg2000Band *band = reslevel->band + bandno;
1285 Jpeg2000Prec *prec = band->prec + precno;
1286
1287 for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
1288 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1289 for (passno = 0; passno < cblk->npasses; passno++) {
1290 Jpeg2000Pass *pass = &cblk->passes[passno];
1291 int dr;
1292 double dd, drslope;
1293
1294 if (passno == 0) {
1295 dr = (int32_t)pass->rate;
1296 dd = pass->disto;
1297 } else {
1298 dr = (int32_t)(pass->rate - cblk->passes[passno - 1].rate);
1299 dd = pass->disto - cblk->passes[passno - 1].disto;
1300 }
1301
1302 if (dr <= 0)
1303 continue;
1304
1305 drslope = dd / dr;
1306 if (drslope < min)
1307 min = drslope;
1308
1309 if (drslope > max)
1310 max = drslope;
1311 }
1312 }
1313 }
1314 }
1315 }
1316 }
1317
1318 for (layno = 0; layno < s->nlayers; layno++) {
1319 double lo = min;
1320 double hi = max;
1321 double stable_thresh = 0.0;
1322 double good_thresh = 0.0;
1323 if (!s->layer_rates[layno]) {
1324 good_thresh = -1.0;
1325 } else {
1326 for (i = 0; i < 128; i++) {
1327 uint8_t *stream_pos = s->buf;
1328 int ret;
1329 thresh = (lo + hi) / 2;
1330 makelayer(s, layno, thresh, tile, 0);
1331 ret = encode_packets(s, tile, (int)(tile - s->tile), layno + 1);
1332 memset(stream_pos, 0, s->buf - stream_pos);
1333 if ((s->buf - stream_pos > ceil(tile->layer_rates[layno])) || ret < 0) {
1334 lo = thresh;
1335 s->buf = stream_pos;
1336 continue;
1337 }
1338 hi = thresh;
1339 stable_thresh = thresh;
1340 s->buf = stream_pos;
1341 }
1342 }
1343 if (good_thresh >= 0.0)
1344 good_thresh = stable_thresh == 0.0 ? thresh : stable_thresh;
1345 makelayer(s, layno, good_thresh, tile, 1);
1346 }
1347 }
1348
getcut(Jpeg2000Cblk *cblk, int64_t lambda, int dwt_norm)1349 static int getcut(Jpeg2000Cblk *cblk, int64_t lambda, int dwt_norm)
1350 {
1351 int passno, res = 0;
1352 for (passno = 0; passno < cblk->npasses; passno++){
1353 int dr;
1354 int64_t dd;
1355
1356 dr = cblk->passes[passno].rate
1357 - (res ? cblk->passes[res-1].rate : 0);
1358 dd = cblk->passes[passno].disto
1359 - (res ? cblk->passes[res-1].disto : 0);
1360
1361 if (((dd * dwt_norm) >> WMSEDEC_SHIFT) * dwt_norm >= dr * lambda)
1362 res = passno+1;
1363 }
1364 return res;
1365 }
1366
truncpasses(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)1367 static void truncpasses(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)
1368 {
1369 int precno, compno, reslevelno, bandno, cblkno, lev;
1370 Jpeg2000CodingStyle *codsty = &s->codsty;
1371
1372 for (compno = 0; compno < s->ncomponents; compno++){
1373 Jpeg2000Component *comp = tile->comp + compno;
1374
1375 for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
1376 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
1377
1378 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
1379 for (bandno = 0; bandno < reslevel->nbands ; bandno++){
1380 int bandpos = bandno + (reslevelno > 0);
1381 Jpeg2000Band *band = reslevel->band + bandno;
1382 Jpeg2000Prec *prec = band->prec + precno;
1383
1384 for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
1385 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1386
1387 cblk->ninclpasses = getcut(cblk, s->lambda,
1388 (int64_t)dwt_norms[codsty->transform == FF_DWT53][bandpos][lev] * (int64_t)band->i_stepsize >> 15);
1389 cblk->layers[0].data_start = cblk->data;
1390 cblk->layers[0].cum_passes = cblk->ninclpasses;
1391 cblk->layers[0].npasses = cblk->ninclpasses;
1392 if (cblk->ninclpasses)
1393 cblk->layers[0].data_len = cblk->passes[cblk->ninclpasses - 1].rate;
1394 }
1395 }
1396 }
1397 }
1398 }
1399 }
1400
encode_tile(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno)1401 static int encode_tile(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno)
1402 {
1403 int compno, reslevelno, bandno, ret;
1404 Jpeg2000T1Context t1;
1405 Jpeg2000CodingStyle *codsty = &s->codsty;
1406 for (compno = 0; compno < s->ncomponents; compno++){
1407 Jpeg2000Component *comp = s->tile[tileno].comp + compno;
1408
1409 t1.stride = (1<<codsty->log2_cblk_width) + 2;
1410
1411 av_log(s->avctx, AV_LOG_DEBUG,"dwt\n");
1412 if ((ret = ff_dwt_encode(&comp->dwt, comp->i_data)) < 0)
1413 return ret;
1414 av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n");
1415
1416 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
1417 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
1418
1419 for (bandno = 0; bandno < reslevel->nbands ; bandno++){
1420 Jpeg2000Band *band = reslevel->band + bandno;
1421 Jpeg2000Prec *prec = band->prec; // we support only 1 precinct per band ATM in the encoder
1422 int cblkx, cblky, cblkno=0, xx0, x0, xx1, y0, yy0, yy1, bandpos;
1423 yy0 = bandno == 0 ? 0 : comp->reslevel[reslevelno-1].coord[1][1] - comp->reslevel[reslevelno-1].coord[1][0];
1424 y0 = yy0;
1425 yy1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[1][0] + 1, band->log2_cblk_height) << band->log2_cblk_height,
1426 band->coord[1][1]) - band->coord[1][0] + yy0;
1427
1428 if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1])
1429 continue;
1430
1431 bandpos = bandno + (reslevelno > 0);
1432
1433 for (cblky = 0; cblky < prec->nb_codeblocks_height; cblky++){
1434 if (reslevelno == 0 || bandno == 1)
1435 xx0 = 0;
1436 else
1437 xx0 = comp->reslevel[reslevelno-1].coord[0][1] - comp->reslevel[reslevelno-1].coord[0][0];
1438 x0 = xx0;
1439 xx1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[0][0] + 1, band->log2_cblk_width) << band->log2_cblk_width,
1440 band->coord[0][1]) - band->coord[0][0] + xx0;
1441
1442 for (cblkx = 0; cblkx < prec->nb_codeblocks_width; cblkx++, cblkno++){
1443 int y, x;
1444 if (codsty->transform == FF_DWT53){
1445 for (y = yy0; y < yy1; y++){
1446 int *ptr = t1.data + (y-yy0)*t1.stride;
1447 for (x = xx0; x < xx1; x++){
1448 *ptr++ = comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] * (1 << NMSEDEC_FRACBITS);
1449 }
1450 }
1451 } else{
1452 for (y = yy0; y < yy1; y++){
1453 int *ptr = t1.data + (y-yy0)*t1.stride;
1454 for (x = xx0; x < xx1; x++){
1455 *ptr = (comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]);
1456 *ptr = (int64_t)*ptr * (int64_t)(16384 * 65536 / band->i_stepsize) >> 15 - NMSEDEC_FRACBITS;
1457 ptr++;
1458 }
1459 }
1460 }
1461 if (!prec->cblk[cblkno].data)
1462 prec->cblk[cblkno].data = av_malloc(1 + 8192);
1463 if (!prec->cblk[cblkno].passes)
1464 prec->cblk[cblkno].passes = av_malloc_array(JPEG2000_MAX_PASSES, sizeof (*prec->cblk[cblkno].passes));
1465 if (!prec->cblk[cblkno].data || !prec->cblk[cblkno].passes)
1466 return AVERROR(ENOMEM);
1467 encode_cblk(s, &t1, prec->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0,
1468 bandpos, codsty->nreslevels - reslevelno - 1);
1469 xx0 = xx1;
1470 xx1 = FFMIN(xx1 + (1 << band->log2_cblk_width), band->coord[0][1] - band->coord[0][0] + x0);
1471 }
1472 yy0 = yy1;
1473 yy1 = FFMIN(yy1 + (1 << band->log2_cblk_height), band->coord[1][1] - band->coord[1][0] + y0);
1474 }
1475 }
1476 }
1477 av_log(s->avctx, AV_LOG_DEBUG, "after tier1\n");
1478 }
1479
1480 av_log(s->avctx, AV_LOG_DEBUG, "rate control\n");
1481 if (s->compression_rate_enc)
1482 makelayers(s, tile);
1483 else
1484 truncpasses(s, tile);
1485
1486 if ((ret = encode_packets(s, tile, tileno, s->nlayers)) < 0)
1487 return ret;
1488 av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n");
1489 return 0;
1490 }
1491
cleanup(Jpeg2000EncoderContext *s)1492 static void cleanup(Jpeg2000EncoderContext *s)
1493 {
1494 int tileno, compno;
1495 Jpeg2000CodingStyle *codsty = &s->codsty;
1496
1497 if (!s->tile)
1498 return;
1499 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
1500 if (s->tile[tileno].comp) {
1501 for (compno = 0; compno < s->ncomponents; compno++){
1502 Jpeg2000Component *comp = s->tile[tileno].comp + compno;
1503 ff_jpeg2000_cleanup(comp, codsty);
1504 }
1505 av_freep(&s->tile[tileno].comp);
1506 }
1507 av_freep(&s->tile[tileno].layer_rates);
1508 }
1509 av_freep(&s->tile);
1510 }
1511
reinit(Jpeg2000EncoderContext *s)1512 static void reinit(Jpeg2000EncoderContext *s)
1513 {
1514 int tileno, compno;
1515 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
1516 Jpeg2000Tile *tile = s->tile + tileno;
1517 for (compno = 0; compno < s->ncomponents; compno++)
1518 ff_jpeg2000_reinit(tile->comp + compno, &s->codsty);
1519 }
1520 }
1521
update_size(uint8_t *size, const uint8_t *end)1522 static void update_size(uint8_t *size, const uint8_t *end)
1523 {
1524 AV_WB32(size, end-size);
1525 }
1526
encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)1527 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1528 const AVFrame *pict, int *got_packet)
1529 {
1530 int tileno, ret;
1531 Jpeg2000EncoderContext *s = avctx->priv_data;
1532 uint8_t *chunkstart, *jp2cstart, *jp2hstart;
1533 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1534
1535 if ((ret = ff_alloc_packet(avctx, pkt, avctx->width*avctx->height*9 + AV_INPUT_BUFFER_MIN_SIZE)) < 0)
1536 return ret;
1537
1538 // init:
1539 s->buf = s->buf_start = pkt->data;
1540 s->buf_end = pkt->data + pkt->size;
1541
1542 s->picture = pict;
1543
1544 s->lambda = s->picture->quality * LAMBDA_SCALE;
1545
1546 if (s->cbps[0] > 8)
1547 copy_frame_16(s);
1548 else
1549 copy_frame_8(s);
1550
1551 reinit(s);
1552
1553 if (s->format == CODEC_JP2) {
1554 av_assert0(s->buf == pkt->data);
1555
1556 bytestream_put_be32(&s->buf, 0x0000000C);
1557 bytestream_put_be32(&s->buf, 0x6A502020);
1558 bytestream_put_be32(&s->buf, 0x0D0A870A);
1559
1560 chunkstart = s->buf;
1561 bytestream_put_be32(&s->buf, 0);
1562 bytestream_put_buffer(&s->buf, "ftyp", 4);
1563 bytestream_put_buffer(&s->buf, "jp2\040\040", 4);
1564 bytestream_put_be32(&s->buf, 0);
1565 bytestream_put_buffer(&s->buf, "jp2\040", 4);
1566 update_size(chunkstart, s->buf);
1567
1568 jp2hstart = s->buf;
1569 bytestream_put_be32(&s->buf, 0);
1570 bytestream_put_buffer(&s->buf, "jp2h", 4);
1571
1572 chunkstart = s->buf;
1573 bytestream_put_be32(&s->buf, 0);
1574 bytestream_put_buffer(&s->buf, "ihdr", 4);
1575 bytestream_put_be32(&s->buf, avctx->height);
1576 bytestream_put_be32(&s->buf, avctx->width);
1577 bytestream_put_be16(&s->buf, s->ncomponents);
1578 bytestream_put_byte(&s->buf, s->cbps[0]);
1579 bytestream_put_byte(&s->buf, 7);
1580 bytestream_put_byte(&s->buf, 0);
1581 bytestream_put_byte(&s->buf, 0);
1582 update_size(chunkstart, s->buf);
1583
1584 chunkstart = s->buf;
1585 bytestream_put_be32(&s->buf, 0);
1586 bytestream_put_buffer(&s->buf, "colr", 4);
1587 bytestream_put_byte(&s->buf, 1);
1588 bytestream_put_byte(&s->buf, 0);
1589 bytestream_put_byte(&s->buf, 0);
1590 if ((desc->flags & AV_PIX_FMT_FLAG_RGB) || avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1591 bytestream_put_be32(&s->buf, 16);
1592 } else if (s->ncomponents == 1) {
1593 bytestream_put_be32(&s->buf, 17);
1594 } else {
1595 bytestream_put_be32(&s->buf, 18);
1596 }
1597 update_size(chunkstart, s->buf);
1598 if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1599 int i;
1600 uint8_t *palette = pict->data[1];
1601 chunkstart = s->buf;
1602 bytestream_put_be32(&s->buf, 0);
1603 bytestream_put_buffer(&s->buf, "pclr", 4);
1604 bytestream_put_be16(&s->buf, AVPALETTE_COUNT);
1605 bytestream_put_byte(&s->buf, 3); // colour channels
1606 bytestream_put_be24(&s->buf, 0x070707); //colour depths
1607 for (i = 0; i < AVPALETTE_COUNT; i++) {
1608 bytestream_put_be24(&s->buf, HAVE_BIGENDIAN ? AV_RB24(palette + 1) : AV_RL24(palette));
1609 palette += 4;
1610 }
1611 update_size(chunkstart, s->buf);
1612 chunkstart = s->buf;
1613 bytestream_put_be32(&s->buf, 0);
1614 bytestream_put_buffer(&s->buf, "cmap", 4);
1615 for (i = 0; i < 3; i++) {
1616 bytestream_put_be16(&s->buf, 0); // component
1617 bytestream_put_byte(&s->buf, 1); // palette mapping
1618 bytestream_put_byte(&s->buf, i); // index
1619 }
1620 update_size(chunkstart, s->buf);
1621 }
1622 update_size(jp2hstart, s->buf);
1623
1624 jp2cstart = s->buf;
1625 bytestream_put_be32(&s->buf, 0);
1626 bytestream_put_buffer(&s->buf, "jp2c", 4);
1627 }
1628
1629 if (s->buf_end - s->buf < 2)
1630 return -1;
1631 bytestream_put_be16(&s->buf, JPEG2000_SOC);
1632 if ((ret = put_siz(s)) < 0)
1633 return ret;
1634 if ((ret = put_cod(s)) < 0)
1635 return ret;
1636 if ((ret = put_qcd(s, 0)) < 0)
1637 return ret;
1638 if ((ret = put_com(s, 0)) < 0)
1639 return ret;
1640
1641 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
1642 uint8_t *psotptr;
1643 if (!(psotptr = put_sot(s, tileno)))
1644 return -1;
1645 if (s->buf_end - s->buf < 2)
1646 return -1;
1647 bytestream_put_be16(&s->buf, JPEG2000_SOD);
1648 if ((ret = encode_tile(s, s->tile + tileno, tileno)) < 0)
1649 return ret;
1650 bytestream_put_be32(&psotptr, s->buf - psotptr + 6);
1651 }
1652 if (s->buf_end - s->buf < 2)
1653 return -1;
1654 bytestream_put_be16(&s->buf, JPEG2000_EOC);
1655
1656 if (s->format == CODEC_JP2)
1657 update_size(jp2cstart, s->buf);
1658
1659 av_log(s->avctx, AV_LOG_DEBUG, "end\n");
1660 pkt->size = s->buf - s->buf_start;
1661 *got_packet = 1;
1662
1663 return 0;
1664 }
1665
parse_layer_rates(Jpeg2000EncoderContext *s)1666 static int parse_layer_rates(Jpeg2000EncoderContext *s)
1667 {
1668 int i;
1669 char *token;
1670 char *saveptr = NULL;
1671 int rate;
1672 int nlayers = 0;
1673 if (!s->lr_str) {
1674 s->nlayers = 1;
1675 s->layer_rates[0] = 0;
1676 s->compression_rate_enc = 0;
1677 return 0;
1678 }
1679
1680 token = av_strtok(s->lr_str, ",", &saveptr);
1681 if (token && (rate = strtol(token, NULL, 10))) {
1682 s->layer_rates[0] = rate <= 1 ? 0:rate;
1683 nlayers++;
1684 } else {
1685 return AVERROR_INVALIDDATA;
1686 }
1687
1688 while (1) {
1689 token = av_strtok(NULL, ",", &saveptr);
1690 if (!token)
1691 break;
1692 if (rate = strtol(token, NULL, 10)) {
1693 if (nlayers >= 100) {
1694 return AVERROR_INVALIDDATA;
1695 }
1696 s->layer_rates[nlayers] = rate <= 1 ? 0:rate;
1697 nlayers++;
1698 } else {
1699 return AVERROR_INVALIDDATA;
1700 }
1701 }
1702
1703 for (i = 1; i < nlayers; i++) {
1704 if (s->layer_rates[i] >= s->layer_rates[i-1]) {
1705 return AVERROR_INVALIDDATA;
1706 }
1707 }
1708 s->nlayers = nlayers;
1709 s->compression_rate_enc = 1;
1710 return 0;
1711 }
1712
j2kenc_init(AVCodecContext *avctx)1713 static av_cold int j2kenc_init(AVCodecContext *avctx)
1714 {
1715 static AVOnce init_static_once = AV_ONCE_INIT;
1716 int i, ret;
1717 Jpeg2000EncoderContext *s = avctx->priv_data;
1718 Jpeg2000CodingStyle *codsty = &s->codsty;
1719 Jpeg2000QuantStyle *qntsty = &s->qntsty;
1720 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1721
1722 s->avctx = avctx;
1723 av_log(s->avctx, AV_LOG_DEBUG, "init\n");
1724 if (parse_layer_rates(s)) {
1725 av_log(s, AV_LOG_WARNING, "Layer rates invalid. Encoding with 1 layer based on quality metric.\n");
1726 s->nlayers = 1;
1727 s->layer_rates[0] = 0;
1728 s->compression_rate_enc = 0;
1729 }
1730
1731 if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && (s->pred != FF_DWT97_INT || s->format != CODEC_JP2)) {
1732 av_log(s->avctx, AV_LOG_WARNING, "Forcing lossless jp2 for pal8\n");
1733 s->pred = 1;
1734 s->format = CODEC_JP2;
1735 }
1736
1737 // defaults:
1738 // TODO: implement setting non-standard precinct size
1739 memset(codsty->log2_prec_widths , 15, sizeof(codsty->log2_prec_widths ));
1740 memset(codsty->log2_prec_heights, 15, sizeof(codsty->log2_prec_heights));
1741 codsty->nreslevels2decode=
1742 codsty->nreslevels = 7;
1743 codsty->nlayers = s->nlayers;
1744 codsty->log2_cblk_width = 4;
1745 codsty->log2_cblk_height = 4;
1746 codsty->transform = s->pred ? FF_DWT53 : FF_DWT97_INT;
1747
1748 qntsty->nguardbits = 1;
1749
1750 if ((s->tile_width & (s->tile_width -1)) ||
1751 (s->tile_height & (s->tile_height-1))) {
1752 av_log(avctx, AV_LOG_WARNING, "Tile dimension not a power of 2\n");
1753 }
1754
1755 if (codsty->transform == FF_DWT53)
1756 qntsty->quantsty = JPEG2000_QSTY_NONE;
1757 else
1758 qntsty->quantsty = JPEG2000_QSTY_SE;
1759
1760 s->width = avctx->width;
1761 s->height = avctx->height;
1762
1763 s->ncomponents = desc->nb_components;
1764 for (i = 0; i < 3; i++) {
1765 s->cbps[i] = desc->comp[i].depth;
1766 }
1767
1768 if ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && s->ncomponents > 1) {
1769 s->planar = 1;
1770 ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
1771 s->chroma_shift, s->chroma_shift + 1);
1772 if (ret)
1773 return ret;
1774 }
1775
1776 ff_thread_once(&init_static_once, init_luts);
1777
1778 init_quantization(s);
1779 if ((ret=init_tiles(s)) < 0)
1780 return ret;
1781
1782 av_log(s->avctx, AV_LOG_DEBUG, "after init\n");
1783
1784 return 0;
1785 }
1786
j2kenc_destroy(AVCodecContext *avctx)1787 static int j2kenc_destroy(AVCodecContext *avctx)
1788 {
1789 Jpeg2000EncoderContext *s = avctx->priv_data;
1790
1791 cleanup(s);
1792 return 0;
1793 }
1794
1795 // taken from the libopenjpeg wraper so it matches
1796
1797 #define OFFSET(x) offsetof(Jpeg2000EncoderContext, x)
1798 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1799 static const AVOption options[] = {
1800 { "format", "Codec Format", OFFSET(format), AV_OPT_TYPE_INT, { .i64 = CODEC_JP2 }, CODEC_J2K, CODEC_JP2, VE, "format" },
1801 { "j2k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_J2K }, 0, 0, VE, "format" },
1802 { "jp2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_JP2 }, 0, 0, VE, "format" },
1803 { "tile_width", "Tile Width", OFFSET(tile_width), AV_OPT_TYPE_INT, { .i64 = 256 }, 1, 1<<30, VE, },
1804 { "tile_height", "Tile Height", OFFSET(tile_height), AV_OPT_TYPE_INT, { .i64 = 256 }, 1, 1<<30, VE, },
1805 { "pred", "DWT Type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, "pred" },
1806 { "dwt97int", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1807 { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1808 { "sop", "SOP marker", OFFSET(sop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, },
1809 { "eph", "EPH marker", OFFSET(eph), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, },
1810 { "prog", "Progression Order", OFFSET(prog), AV_OPT_TYPE_INT, { .i64 = 0 }, JPEG2000_PGOD_LRCP, JPEG2000_PGOD_CPRL, VE, "prog" },
1811 { "lrcp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_LRCP }, 0, 0, VE, "prog" },
1812 { "rlcp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_RLCP }, 0, 0, VE, "prog" },
1813 { "rpcl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_RPCL }, 0, 0, VE, "prog" },
1814 { "pcrl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_PCRL }, 0, 0, VE, "prog" },
1815 { "cprl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_CPRL }, 0, 0, VE, "prog" },
1816 { "layer_rates", "Layer Rates", OFFSET(lr_str), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
1817 { NULL }
1818 };
1819
1820 static const AVClass j2k_class = {
1821 .class_name = "jpeg 2000 encoder",
1822 .item_name = av_default_item_name,
1823 .option = options,
1824 .version = LIBAVUTIL_VERSION_INT,
1825 };
1826
1827 const FFCodec ff_jpeg2000_encoder = {
1828 .p.name = "jpeg2000",
1829 .p.long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
1830 .p.type = AVMEDIA_TYPE_VIDEO,
1831 .p.id = AV_CODEC_ID_JPEG2000,
1832 .priv_data_size = sizeof(Jpeg2000EncoderContext),
1833 .init = j2kenc_init,
1834 FF_CODEC_ENCODE_CB(encode_frame),
1835 .close = j2kenc_destroy,
1836 .p.pix_fmts = (const enum AVPixelFormat[]) {
1837 AV_PIX_FMT_RGB24, AV_PIX_FMT_YUV444P, AV_PIX_FMT_GRAY8,
1838 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
1839 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
1840 AV_PIX_FMT_PAL8,
1841 AV_PIX_FMT_RGB48, AV_PIX_FMT_GRAY16,
1842 AV_PIX_FMT_NONE
1843 },
1844 .p.priv_class = &j2k_class,
1845 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1846 };
1847