FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
libopenjpegenc.c
Go to the documentation of this file.
1 /*
2  * JPEG 2000 encoding support via OpenJPEG
3  * Copyright (c) 2011 Michael Bradshaw <mjbshaw gmail com>
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  * @file
24  * JPEG 2000 encoder using libopenjpeg
25  */
26 
27 #define OPJ_STATIC
28 
29 #include "libavutil/avassert.h"
30 #include "libavutil/common.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/opt.h"
34 #include "avcodec.h"
35 #include "internal.h"
36 
37 #if HAVE_OPENJPEG_1_5_OPENJPEG_H
38 # include <openjpeg-1.5/openjpeg.h>
39 #else
40 # include <openjpeg.h>
41 #endif
42 
43 typedef struct LibOpenJPEGContext {
45  opj_image_t *image;
46  opj_cparameters_t enc_params;
47  opj_event_mgr_t event_mgr;
48  int format;
49  int profile;
53  int numlayers;
58 
59 static void error_callback(const char *msg, void *data)
60 {
61  av_log(data, AV_LOG_ERROR, "%s\n", msg);
62 }
63 
64 static void warning_callback(const char *msg, void *data)
65 {
66  av_log(data, AV_LOG_WARNING, "%s\n", msg);
67 }
68 
69 static void info_callback(const char *msg, void *data)
70 {
71  av_log(data, AV_LOG_DEBUG, "%s\n", msg);
72 }
73 
74 static void cinema_parameters(opj_cparameters_t *p)
75 {
76  p->tile_size_on = 0;
77  p->cp_tdx = 1;
78  p->cp_tdy = 1;
79 
80  /* Tile part */
81  p->tp_flag = 'C';
82  p->tp_on = 1;
83 
84  /* Tile and Image shall be at (0, 0) */
85  p->cp_tx0 = 0;
86  p->cp_ty0 = 0;
87  p->image_offset_x0 = 0;
88  p->image_offset_y0 = 0;
89 
90  /* Codeblock size= 32 * 32 */
91  p->cblockw_init = 32;
92  p->cblockh_init = 32;
93  p->csty |= 0x01;
94 
95  /* The progression order shall be CPRL */
96  p->prog_order = CPRL;
97 
98  /* No ROI */
99  p->roi_compno = -1;
100 
101  /* No subsampling */
102  p->subsampling_dx = 1;
103  p->subsampling_dy = 1;
104 
105  /* 9-7 transform */
106  p->irreversible = 1;
107 
108  p->tcp_mct = 1;
109 }
110 
111 static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *parameters)
112 {
113  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
114  opj_image_cmptparm_t cmptparm[4] = {{0}};
115  opj_image_t *img;
116  int i;
117  int sub_dx[4];
118  int sub_dy[4];
119  int numcomps;
120  OPJ_COLOR_SPACE color_space = CLRSPC_UNKNOWN;
121 
122  sub_dx[0] = sub_dx[3] = 1;
123  sub_dy[0] = sub_dy[3] = 1;
124  sub_dx[1] = sub_dx[2] = 1 << desc->log2_chroma_w;
125  sub_dy[1] = sub_dy[2] = 1 << desc->log2_chroma_h;
126 
127  numcomps = desc->nb_components;
128 
129  switch (avctx->pix_fmt) {
130  case AV_PIX_FMT_GRAY8:
131  case AV_PIX_FMT_YA8:
132  case AV_PIX_FMT_GRAY16:
133  case AV_PIX_FMT_YA16:
134  color_space = CLRSPC_GRAY;
135  break;
136  case AV_PIX_FMT_RGB24:
137  case AV_PIX_FMT_RGBA:
138  case AV_PIX_FMT_RGB48:
139  case AV_PIX_FMT_RGBA64:
140  case AV_PIX_FMT_GBR24P:
141  case AV_PIX_FMT_GBRP9:
142  case AV_PIX_FMT_GBRP10:
143  case AV_PIX_FMT_GBRP12:
144  case AV_PIX_FMT_GBRP14:
145  case AV_PIX_FMT_GBRP16:
146  case AV_PIX_FMT_XYZ12:
147  color_space = CLRSPC_SRGB;
148  break;
149  case AV_PIX_FMT_YUV410P:
150  case AV_PIX_FMT_YUV411P:
151  case AV_PIX_FMT_YUV420P:
152  case AV_PIX_FMT_YUV422P:
153  case AV_PIX_FMT_YUV440P:
154  case AV_PIX_FMT_YUV444P:
155  case AV_PIX_FMT_YUVA420P:
156  case AV_PIX_FMT_YUVA422P:
157  case AV_PIX_FMT_YUVA444P:
158  case AV_PIX_FMT_YUV420P9:
159  case AV_PIX_FMT_YUV422P9:
160  case AV_PIX_FMT_YUV444P9:
182  color_space = CLRSPC_SYCC;
183  break;
184  default:
185  av_log(avctx, AV_LOG_ERROR,
186  "The requested pixel format '%s' is not supported\n",
187  av_get_pix_fmt_name(avctx->pix_fmt));
188  return NULL;
189  }
190 
191  for (i = 0; i < numcomps; i++) {
192  cmptparm[i].prec = desc->comp[i].depth_minus1 + 1;
193  cmptparm[i].bpp = desc->comp[i].depth_minus1 + 1;
194  cmptparm[i].sgnd = 0;
195  cmptparm[i].dx = sub_dx[i];
196  cmptparm[i].dy = sub_dy[i];
197  cmptparm[i].w = (avctx->width + sub_dx[i] - 1) / sub_dx[i];
198  cmptparm[i].h = (avctx->height + sub_dy[i] - 1) / sub_dy[i];
199  }
200 
201  img = opj_image_create(numcomps, cmptparm, color_space);
202 
203  // x0, y0 is the top left corner of the image
204  // x1, y1 is the width, height of the reference grid
205  img->x0 = 0;
206  img->y0 = 0;
207  img->x1 = (avctx->width - 1) * parameters->subsampling_dx + 1;
208  img->y1 = (avctx->height - 1) * parameters->subsampling_dy + 1;
209 
210  return img;
211 }
212 
214 {
215  LibOpenJPEGContext *ctx = avctx->priv_data;
216  int err = AVERROR(ENOMEM);
217 
218  opj_set_default_encoder_parameters(&ctx->enc_params);
219 
220  ctx->enc_params.cp_rsiz = ctx->profile;
221  ctx->enc_params.mode = !!avctx->global_quality;
222  ctx->enc_params.cp_cinema = ctx->cinema_mode;
223  ctx->enc_params.prog_order = ctx->prog_order;
224  ctx->enc_params.numresolution = ctx->numresolution;
225  ctx->enc_params.cp_disto_alloc = ctx->disto_alloc;
226  ctx->enc_params.cp_fixed_alloc = ctx->fixed_alloc;
227  ctx->enc_params.cp_fixed_quality = ctx->fixed_quality;
228  ctx->enc_params.tcp_numlayers = ctx->numlayers;
229  ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;
230 
231  if (ctx->cinema_mode > 0) {
233  }
234 
235  ctx->image = mj2_create_image(avctx, &ctx->enc_params);
236  if (!ctx->image) {
237  av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
238  err = AVERROR(EINVAL);
239  goto fail;
240  }
241 
242  avctx->coded_frame = av_frame_alloc();
243  if (!avctx->coded_frame) {
244  av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
245  goto fail;
246  }
247 
248  return 0;
249 
250 fail:
251  opj_image_destroy(ctx->image);
252  ctx->image = NULL;
253  av_frame_free(&avctx->coded_frame);
254  return err;
255 }
256 
257 static int libopenjpeg_copy_packed8(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
258 {
259  int compno;
260  int x;
261  int y;
262  int *image_line;
263  int frame_index;
264  const int numcomps = image->numcomps;
265 
266  for (compno = 0; compno < numcomps; ++compno) {
267  if (image->comps[compno].w > frame->linesize[0] / numcomps) {
268  av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
269  return 0;
270  }
271  }
272 
273  for (compno = 0; compno < numcomps; ++compno) {
274  for (y = 0; y < avctx->height; ++y) {
275  image_line = image->comps[compno].data + y * image->comps[compno].w;
276  frame_index = y * frame->linesize[0] + compno;
277  for (x = 0; x < avctx->width; ++x) {
278  image_line[x] = frame->data[0][frame_index];
279  frame_index += numcomps;
280  }
281  for (; x < image->comps[compno].w; ++x) {
282  image_line[x] = image_line[x - 1];
283  }
284  }
285  for (; y < image->comps[compno].h; ++y) {
286  image_line = image->comps[compno].data + y * image->comps[compno].w;
287  for (x = 0; x < image->comps[compno].w; ++x) {
288  image_line[x] = image_line[x - image->comps[compno].w];
289  }
290  }
291  }
292 
293  return 1;
294 }
295 
296 // for XYZ 12 bit
297 static int libopenjpeg_copy_packed12(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
298 {
299  int compno;
300  int x, y;
301  int *image_line;
302  int frame_index;
303  const int numcomps = image->numcomps;
304  uint16_t *frame_ptr = (uint16_t *)frame->data[0];
305 
306  for (compno = 0; compno < numcomps; ++compno) {
307  if (image->comps[compno].w > frame->linesize[0] / numcomps) {
308  av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
309  return 0;
310  }
311  }
312 
313  for (compno = 0; compno < numcomps; ++compno) {
314  for (y = 0; y < avctx->height; ++y) {
315  image_line = image->comps[compno].data + y * image->comps[compno].w;
316  frame_index = y * (frame->linesize[0] / 2) + compno;
317  for (x = 0; x < avctx->width; ++x) {
318  image_line[x] = frame_ptr[frame_index] >> 4;
319  frame_index += numcomps;
320  }
321  for (; x < image->comps[compno].w; ++x) {
322  image_line[x] = image_line[x - 1];
323  }
324  }
325  for (; y < image->comps[compno].h; ++y) {
326  image_line = image->comps[compno].data + y * image->comps[compno].w;
327  for (x = 0; x < image->comps[compno].w; ++x) {
328  image_line[x] = image_line[x - image->comps[compno].w];
329  }
330  }
331  }
332 
333  return 1;
334 }
335 
336 static int libopenjpeg_copy_packed16(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
337 {
338  int compno;
339  int x;
340  int y;
341  int *image_line;
342  int frame_index;
343  const int numcomps = image->numcomps;
344  uint16_t *frame_ptr = (uint16_t*)frame->data[0];
345 
346  for (compno = 0; compno < numcomps; ++compno) {
347  if (image->comps[compno].w > frame->linesize[0] / numcomps) {
348  av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
349  return 0;
350  }
351  }
352 
353  for (compno = 0; compno < numcomps; ++compno) {
354  for (y = 0; y < avctx->height; ++y) {
355  image_line = image->comps[compno].data + y * image->comps[compno].w;
356  frame_index = y * (frame->linesize[0] / 2) + compno;
357  for (x = 0; x < avctx->width; ++x) {
358  image_line[x] = frame_ptr[frame_index];
359  frame_index += numcomps;
360  }
361  for (; x < image->comps[compno].w; ++x) {
362  image_line[x] = image_line[x - 1];
363  }
364  }
365  for (; y < image->comps[compno].h; ++y) {
366  image_line = image->comps[compno].data + y * image->comps[compno].w;
367  for (x = 0; x < image->comps[compno].w; ++x) {
368  image_line[x] = image_line[x - image->comps[compno].w];
369  }
370  }
371  }
372 
373  return 1;
374 }
375 
376 static int libopenjpeg_copy_unpacked8(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
377 {
378  int compno;
379  int x;
380  int y;
381  int width;
382  int height;
383  int *image_line;
384  int frame_index;
385  const int numcomps = image->numcomps;
386 
387  for (compno = 0; compno < numcomps; ++compno) {
388  if (image->comps[compno].w > frame->linesize[compno]) {
389  av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
390  return 0;
391  }
392  }
393 
394  for (compno = 0; compno < numcomps; ++compno) {
395  width = avctx->width / image->comps[compno].dx;
396  height = avctx->height / image->comps[compno].dy;
397  for (y = 0; y < height; ++y) {
398  image_line = image->comps[compno].data + y * image->comps[compno].w;
399  frame_index = y * frame->linesize[compno];
400  for (x = 0; x < width; ++x)
401  image_line[x] = frame->data[compno][frame_index++];
402  for (; x < image->comps[compno].w; ++x) {
403  image_line[x] = image_line[x - 1];
404  }
405  }
406  for (; y < image->comps[compno].h; ++y) {
407  image_line = image->comps[compno].data + y * image->comps[compno].w;
408  for (x = 0; x < image->comps[compno].w; ++x) {
409  image_line[x] = image_line[x - image->comps[compno].w];
410  }
411  }
412  }
413 
414  return 1;
415 }
416 
417 static int libopenjpeg_copy_unpacked16(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
418 {
419  int compno;
420  int x;
421  int y;
422  int width;
423  int height;
424  int *image_line;
425  int frame_index;
426  const int numcomps = image->numcomps;
427  uint16_t *frame_ptr;
428 
429  for (compno = 0; compno < numcomps; ++compno) {
430  if (image->comps[compno].w > frame->linesize[compno]) {
431  av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
432  return 0;
433  }
434  }
435 
436  for (compno = 0; compno < numcomps; ++compno) {
437  width = avctx->width / image->comps[compno].dx;
438  height = avctx->height / image->comps[compno].dy;
439  frame_ptr = (uint16_t *)frame->data[compno];
440  for (y = 0; y < height; ++y) {
441  image_line = image->comps[compno].data + y * image->comps[compno].w;
442  frame_index = y * (frame->linesize[compno] / 2);
443  for (x = 0; x < width; ++x)
444  image_line[x] = frame_ptr[frame_index++];
445  for (; x < image->comps[compno].w; ++x) {
446  image_line[x] = image_line[x - 1];
447  }
448  }
449  for (; y < image->comps[compno].h; ++y) {
450  image_line = image->comps[compno].data + y * image->comps[compno].w;
451  for (x = 0; x < image->comps[compno].w; ++x) {
452  image_line[x] = image_line[x - image->comps[compno].w];
453  }
454  }
455  }
456 
457  return 1;
458 }
459 
461  const AVFrame *frame, int *got_packet)
462 {
463  LibOpenJPEGContext *ctx = avctx->priv_data;
464  opj_image_t *image = ctx->image;
465  opj_cinfo_t *compress = NULL;
466  opj_cio_t *stream = NULL;
467  int cpyresult = 0;
468  int ret, len;
469  AVFrame *gbrframe;
470 
471  switch (avctx->pix_fmt) {
472  case AV_PIX_FMT_RGB24:
473  case AV_PIX_FMT_RGBA:
474  case AV_PIX_FMT_YA8:
475  cpyresult = libopenjpeg_copy_packed8(avctx, frame, image);
476  break;
477  case AV_PIX_FMT_XYZ12:
478  cpyresult = libopenjpeg_copy_packed12(avctx, frame, image);
479  break;
480  case AV_PIX_FMT_RGB48:
481  case AV_PIX_FMT_RGBA64:
482  case AV_PIX_FMT_YA16:
483  cpyresult = libopenjpeg_copy_packed16(avctx, frame, image);
484  break;
485  case AV_PIX_FMT_GBR24P:
486  case AV_PIX_FMT_GBRP9:
487  case AV_PIX_FMT_GBRP10:
488  case AV_PIX_FMT_GBRP12:
489  case AV_PIX_FMT_GBRP14:
490  case AV_PIX_FMT_GBRP16:
491  gbrframe = av_frame_clone(frame);
492  if (!gbrframe)
493  return AVERROR(ENOMEM);
494  gbrframe->data[0] = frame->data[2]; // swap to be rgb
495  gbrframe->data[1] = frame->data[0];
496  gbrframe->data[2] = frame->data[1];
497  gbrframe->linesize[0] = frame->linesize[2];
498  gbrframe->linesize[1] = frame->linesize[0];
499  gbrframe->linesize[2] = frame->linesize[1];
500  if (avctx->pix_fmt == AV_PIX_FMT_GBR24P) {
501  cpyresult = libopenjpeg_copy_unpacked8(avctx, gbrframe, image);
502  } else {
503  cpyresult = libopenjpeg_copy_unpacked16(avctx, gbrframe, image);
504  }
505  av_frame_free(&gbrframe);
506  break;
507  case AV_PIX_FMT_GRAY8:
508  case AV_PIX_FMT_YUV410P:
509  case AV_PIX_FMT_YUV411P:
510  case AV_PIX_FMT_YUV420P:
511  case AV_PIX_FMT_YUV422P:
512  case AV_PIX_FMT_YUV440P:
513  case AV_PIX_FMT_YUV444P:
514  case AV_PIX_FMT_YUVA420P:
515  case AV_PIX_FMT_YUVA422P:
516  case AV_PIX_FMT_YUVA444P:
517  cpyresult = libopenjpeg_copy_unpacked8(avctx, frame, image);
518  break;
519  case AV_PIX_FMT_GRAY16:
520  case AV_PIX_FMT_YUV420P9:
521  case AV_PIX_FMT_YUV422P9:
522  case AV_PIX_FMT_YUV444P9:
544  cpyresult = libopenjpeg_copy_unpacked16(avctx, frame, image);
545  break;
546  default:
547  av_log(avctx, AV_LOG_ERROR,
548  "The frame's pixel format '%s' is not supported\n",
549  av_get_pix_fmt_name(avctx->pix_fmt));
550  return AVERROR(EINVAL);
551  break;
552  }
553 
554  if (!cpyresult) {
555  av_log(avctx, AV_LOG_ERROR,
556  "Could not copy the frame data to the internal image buffer\n");
557  return -1;
558  }
559 
560  compress = opj_create_compress(ctx->format);
561  if (!compress) {
562  av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
563  return AVERROR(ENOMEM);
564  }
565 
566  opj_setup_encoder(compress, &ctx->enc_params, image);
567 
568  stream = opj_cio_open((opj_common_ptr) compress, NULL, 0);
569  if (!stream) {
570  av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
571  return AVERROR(ENOMEM);
572  }
573 
574  memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));
575  ctx->event_mgr.info_handler = info_callback;
576  ctx->event_mgr.error_handler = error_callback;
577  ctx->event_mgr.warning_handler = warning_callback;
578  opj_set_event_mgr((opj_common_ptr) compress, &ctx->event_mgr, avctx);
579 
580  if (!opj_encode(compress, stream, image, NULL)) {
581  av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
582  return -1;
583  }
584 
585  len = cio_tell(stream);
586  if ((ret = ff_alloc_packet2(avctx, pkt, len)) < 0) {
587  return ret;
588  }
589 
590  memcpy(pkt->data, stream->buffer, len);
591  pkt->flags |= AV_PKT_FLAG_KEY;
592  *got_packet = 1;
593 
594  opj_cio_close(stream);
595  stream = NULL;
596  opj_destroy_compress(compress);
597  compress = NULL;
598 
599  return 0;
600 }
601 
603 {
604  LibOpenJPEGContext *ctx = avctx->priv_data;
605 
606  opj_image_destroy(ctx->image);
607  ctx->image = NULL;
608  av_frame_free(&avctx->coded_frame);
609  return 0;
610 }
611 
612 #define OFFSET(x) offsetof(LibOpenJPEGContext, x)
613 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
614 static const AVOption options[] = {
615  { "format", "Codec Format", OFFSET(format), AV_OPT_TYPE_INT, { .i64 = CODEC_JP2 }, CODEC_J2K, CODEC_JP2, VE, "format" },
616  { "j2k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_J2K }, 0, 0, VE, "format" },
617  { "jp2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_JP2 }, 0, 0, VE, "format" },
618  { "profile", NULL, OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = STD_RSIZ }, STD_RSIZ, CINEMA4K, VE, "profile" },
619  { "jpeg2000", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = STD_RSIZ }, 0, 0, VE, "profile" },
620  { "cinema2k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CINEMA2K }, 0, 0, VE, "profile" },
621  { "cinema4k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CINEMA4K }, 0, 0, VE, "profile" },
622  { "cinema_mode", "Digital Cinema", OFFSET(cinema_mode), AV_OPT_TYPE_INT, { .i64 = OFF }, OFF, CINEMA4K_24, VE, "cinema_mode" },
623  { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = OFF }, 0, 0, VE, "cinema_mode" },
624  { "2k_24", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CINEMA2K_24 }, 0, 0, VE, "cinema_mode" },
625  { "2k_48", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CINEMA2K_48 }, 0, 0, VE, "cinema_mode" },
626  { "4k_24", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CINEMA4K_24 }, 0, 0, VE, "cinema_mode" },
627  { "prog_order", "Progression Order", OFFSET(prog_order), AV_OPT_TYPE_INT, { .i64 = LRCP }, LRCP, CPRL, VE, "prog_order" },
628  { "lrcp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LRCP }, 0, 0, VE, "prog_order" },
629  { "rlcp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = RLCP }, 0, 0, VE, "prog_order" },
630  { "rpcl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = RPCL }, 0, 0, VE, "prog_order" },
631  { "pcrl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PCRL }, 0, 0, VE, "prog_order" },
632  { "cprl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPRL }, 0, 0, VE, "prog_order" },
633  { "numresolution", NULL, OFFSET(numresolution), AV_OPT_TYPE_INT, { .i64 = 6 }, 1, INT_MAX, VE },
634  { "numlayers", NULL, OFFSET(numlayers), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 10, VE },
635  { "disto_alloc", NULL, OFFSET(disto_alloc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
636  { "fixed_alloc", NULL, OFFSET(fixed_alloc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
637  { "fixed_quality", NULL, OFFSET(fixed_quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
638  { NULL },
639 };
640 
641 static const AVClass openjpeg_class = {
642  .class_name = "libopenjpeg",
643  .item_name = av_default_item_name,
644  .option = options,
645  .version = LIBAVUTIL_VERSION_INT,
646 };
647 
649  .name = "libopenjpeg",
650  .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
651  .type = AVMEDIA_TYPE_VIDEO,
652  .id = AV_CODEC_ID_JPEG2000,
653  .priv_data_size = sizeof(LibOpenJPEGContext),
655  .encode2 = libopenjpeg_encode_frame,
656  .close = libopenjpeg_encode_close,
658  .pix_fmts = (const enum AVPixelFormat[]) {
676  },
677  .priv_class = &openjpeg_class,
678 };