FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
libopenjpegdec.c
Go to the documentation of this file.
1 /*
2  * JPEG 2000 decoding support via OpenJPEG
3  * Copyright (c) 2009 Jaikrishnan Menon <realityman@gmx.net>
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 decoder using libopenjpeg
25  */
26 
27 #define OPJ_STATIC
28 
29 #include "libavutil/common.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixfmt.h"
34 
35 #include "avcodec.h"
36 #include "internal.h"
37 #include "thread.h"
38 
39 #if HAVE_OPENJPEG_2_1_OPENJPEG_H
40 # include <openjpeg-2.1/openjpeg.h>
41 #elif HAVE_OPENJPEG_2_0_OPENJPEG_H
42 # include <openjpeg-2.0/openjpeg.h>
43 #elif HAVE_OPENJPEG_1_5_OPENJPEG_H
44 # include <openjpeg-1.5/openjpeg.h>
45 #else
46 # include <openjpeg.h>
47 #endif
48 
49 #if HAVE_OPENJPEG_2_1_OPENJPEG_H || HAVE_OPENJPEG_2_0_OPENJPEG_H
50 # define OPENJPEG_MAJOR_VERSION 2
51 # define OPJ(x) OPJ_##x
52 #else
53 # define OPENJPEG_MAJOR_VERSION 1
54 # define OPJ(x) x
55 #endif
56 
57 #define JP2_SIG_TYPE 0x6A502020
58 #define JP2_SIG_VALUE 0x0D0A870A
59 
60 // pix_fmts with lower bpp have to be listed before
61 // similar pix_fmts with higher bpp.
62 #define RGB_PIXEL_FORMATS AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, \
63  AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64
64 
65 #define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8, AV_PIX_FMT_YA8, \
66  AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16
67 
68 #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVA420P, \
69  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
70  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
71  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
72  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \
73  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
74  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \
75  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \
76  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
77  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
78  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16
79 
80 #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12
81 
82 static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = {
84 };
87 };
88 static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = {
90 };
91 static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = {
93 };
94 
95 typedef struct LibOpenJPEGContext {
96  AVClass *class;
97  opj_dparameters_t dec_params;
98 #if OPENJPEG_MAJOR_VERSION == 1
99  opj_event_mgr_t event_mgr;
100 #endif // OPENJPEG_MAJOR_VERSION == 1
101  int lowqual;
103 
104 static void error_callback(const char *msg, void *data)
105 {
106  av_log(data, AV_LOG_ERROR, "%s", msg);
107 }
108 
109 static void warning_callback(const char *msg, void *data)
110 {
111  av_log(data, AV_LOG_WARNING, "%s", msg);
112 }
113 
114 static void info_callback(const char *msg, void *data)
115 {
116  av_log(data, AV_LOG_DEBUG, "%s", msg);
117 }
118 
119 #if OPENJPEG_MAJOR_VERSION == 2
120 typedef struct BufferReader {
121  int pos;
122  int size;
123  const uint8_t *buffer;
124 } BufferReader;
125 
126 static OPJ_SIZE_T stream_read(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data)
127 {
128  BufferReader *reader = user_data;
129  int remaining;
130 
131  if (reader->pos == reader->size) {
132  return (OPJ_SIZE_T)-1;
133  }
134  remaining = reader->size - reader->pos;
135  if (nb_bytes > remaining) {
136  nb_bytes = remaining;
137  }
138  memcpy(out_buffer, reader->buffer + reader->pos, nb_bytes);
139  reader->pos += (int)nb_bytes;
140  return nb_bytes;
141 }
142 
143 static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data)
144 {
145  BufferReader *reader = user_data;
146  if (nb_bytes < 0) {
147  if (reader->pos == 0) {
148  return (OPJ_SIZE_T)-1;
149  }
150  if (nb_bytes + reader->pos < 0) {
151  nb_bytes = -reader->pos;
152  }
153  } else {
154  int remaining;
155 
156  if (reader->pos == reader->size) {
157  return (OPJ_SIZE_T)-1;
158  }
159  remaining = reader->size - reader->pos;
160  if (nb_bytes > remaining) {
161  nb_bytes = remaining;
162  }
163  }
164  reader->pos += (int)nb_bytes;
165  return nb_bytes;
166 }
167 
168 static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data)
169 {
170  BufferReader *reader = user_data;
171  if (nb_bytes < 0 || nb_bytes > reader->size) {
172  return OPJ_FALSE;
173  }
174  reader->pos = (int)nb_bytes;
175  return OPJ_TRUE;
176 }
177 #endif // OPENJPEG_MAJOR_VERSION == 2
178 
179 static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt)
180 {
181  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
182  int match = 1;
183 
184  if (desc->nb_components != image->numcomps) {
185  return 0;
186  }
187 
188  switch (desc->nb_components) {
189  case 4:
190  match = match &&
191  desc->comp[3].depth >= image->comps[3].prec &&
192  1 == image->comps[3].dx &&
193  1 == image->comps[3].dy;
194  case 3:
195  match = match &&
196  desc->comp[2].depth >= image->comps[2].prec &&
197  1 << desc->log2_chroma_w == image->comps[2].dx &&
198  1 << desc->log2_chroma_h == image->comps[2].dy;
199  case 2:
200  match = match &&
201  desc->comp[1].depth >= image->comps[1].prec &&
202  1 << desc->log2_chroma_w == image->comps[1].dx &&
203  1 << desc->log2_chroma_h == image->comps[1].dy;
204  case 1:
205  match = match &&
206  desc->comp[0].depth >= image->comps[0].prec &&
207  1 == image->comps[0].dx &&
208  1 == image->comps[0].dy;
209  default:
210  break;
211  }
212 
213  return match;
214 }
215 
216 static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) {
217  int index;
218  const enum AVPixelFormat *possible_fmts = NULL;
219  int possible_fmts_nb = 0;
220 
221  switch (image->color_space) {
222  case OPJ(CLRSPC_SRGB):
223  possible_fmts = libopenjpeg_rgb_pix_fmts;
224  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts);
225  break;
226  case OPJ(CLRSPC_GRAY):
227  possible_fmts = libopenjpeg_gray_pix_fmts;
228  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts);
229  break;
230  case OPJ(CLRSPC_SYCC):
231  possible_fmts = libopenjpeg_yuv_pix_fmts;
232  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts);
233  break;
234  default:
235  possible_fmts = libopenjpeg_all_pix_fmts;
236  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts);
237  break;
238  }
239 
240  for (index = 0; index < possible_fmts_nb; ++index)
241  if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) {
242  return possible_fmts[index];
243  }
244 
245  return AV_PIX_FMT_NONE;
246 }
247 
249 {
250  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
251  int i, component_plane;
252 
253  if (pix_fmt == AV_PIX_FMT_GRAY16)
254  return 0;
255 
256  component_plane = desc->comp[0].plane;
257  for (i = 1; i < desc->nb_components; i++)
258  if (component_plane != desc->comp[i].plane)
259  return 0;
260  return 1;
261 }
262 
263 static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) {
264  uint8_t *img_ptr;
265  int index, x, y, c;
266  for (y = 0; y < picture->height; y++) {
267  index = y * picture->width;
268  img_ptr = picture->data[0] + y * picture->linesize[0];
269  for (x = 0; x < picture->width; x++, index++)
270  for (c = 0; c < image->numcomps; c++)
271  *img_ptr++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index];
272  }
273 }
274 
275 static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) {
276  uint16_t *img_ptr;
278  int index, x, y, c;
279  int adjust[4];
280  for (x = 0; x < image->numcomps; x++)
281  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
282 
283  for (y = 0; y < picture->height; y++) {
284  index = y * picture->width;
285  img_ptr = (uint16_t *) (picture->data[0] + y * picture->linesize[0]);
286  for (x = 0; x < picture->width; x++, index++)
287  for (c = 0; c < image->numcomps; c++)
288  *img_ptr++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd +
289  (unsigned)image->comps[c].data[index] << adjust[c];
290  }
291 }
292 
293 static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) {
294  int *comp_data;
295  uint8_t *img_ptr;
296  int index, x, y;
297 
298  for (index = 0; index < image->numcomps; index++) {
299  comp_data = image->comps[index].data;
300  for (y = 0; y < image->comps[index].h; y++) {
301  img_ptr = picture->data[index] + y * picture->linesize[index];
302  for (x = 0; x < image->comps[index].w; x++) {
303  *img_ptr = 0x80 * image->comps[index].sgnd + *comp_data;
304  img_ptr++;
305  comp_data++;
306  }
307  }
308  }
309 }
310 
311 static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) {
312  int *comp_data;
313  uint16_t *img_ptr;
315  int index, x, y;
316  int adjust[4];
317  for (x = 0; x < image->numcomps; x++)
318  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
319 
320  for (index = 0; index < image->numcomps; index++) {
321  comp_data = image->comps[index].data;
322  for (y = 0; y < image->comps[index].h; y++) {
323  img_ptr = (uint16_t *)(picture->data[index] + y * picture->linesize[index]);
324  for (x = 0; x < image->comps[index].w; x++) {
325  *img_ptr = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd +
326  (unsigned)*comp_data << adjust[index];
327  img_ptr++;
328  comp_data++;
329  }
330  }
331  }
332 }
333 
335 {
336  LibOpenJPEGContext *ctx = avctx->priv_data;
337 
338  opj_set_default_decoder_parameters(&ctx->dec_params);
339  return 0;
340 }
341 
343  void *data, int *got_frame,
344  AVPacket *avpkt)
345 {
346  uint8_t *buf = avpkt->data;
347  int buf_size = avpkt->size;
348  LibOpenJPEGContext *ctx = avctx->priv_data;
349  ThreadFrame frame = { .f = data };
350  AVFrame *picture = data;
351  const AVPixFmtDescriptor *desc;
352  int width, height, ret;
353  int pixel_size = 0;
354  int ispacked = 0;
355  int i;
356  opj_image_t *image = NULL;
357 #if OPENJPEG_MAJOR_VERSION == 1
358  opj_dinfo_t *dec = NULL;
359  opj_cio_t *stream = NULL;
360 #else // OPENJPEG_MAJOR_VERSION == 2
361  BufferReader reader = {0, avpkt->size, avpkt->data};
362  opj_codec_t *dec = NULL;
363  opj_stream_t *stream = NULL;
364 #endif // OPENJPEG_MAJOR_VERSION == 1
365 
366  *got_frame = 0;
367 
368  // Check if input is a raw jpeg2k codestream or in jp2 wrapping
369  if ((AV_RB32(buf) == 12) &&
370  (AV_RB32(buf + 4) == JP2_SIG_TYPE) &&
371  (AV_RB32(buf + 8) == JP2_SIG_VALUE)) {
372  dec = opj_create_decompress(OPJ(CODEC_JP2));
373  } else {
374  /* If the AVPacket contains a jp2c box, then skip to
375  * the starting byte of the codestream. */
376  if (AV_RB32(buf + 4) == AV_RB32("jp2c"))
377  buf += 8;
378  dec = opj_create_decompress(OPJ(CODEC_J2K));
379  }
380 
381  if (!dec) {
382  av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n");
383  ret = AVERROR_EXTERNAL;
384  goto done;
385  }
386 
387 #if OPENJPEG_MAJOR_VERSION == 1
388  memset(&ctx->event_mgr, 0, sizeof(ctx->event_mgr));
389  ctx->event_mgr.info_handler = info_callback;
390  ctx->event_mgr.error_handler = error_callback;
391  ctx->event_mgr.warning_handler = warning_callback;
392  opj_set_event_mgr((opj_common_ptr) dec, &ctx->event_mgr, avctx);
393  ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER;
394  ctx->dec_params.cp_layer = ctx->lowqual;
395 #else // OPENJPEG_MAJOR_VERSION == 2
396  if (!opj_set_error_handler(dec, error_callback, avctx) ||
397  !opj_set_warning_handler(dec, warning_callback, avctx) ||
398  !opj_set_info_handler(dec, info_callback, avctx)) {
399  av_log(avctx, AV_LOG_ERROR, "Error setting decoder handlers.\n");
400  ret = AVERROR_EXTERNAL;
401  goto done;
402  }
403 
404  ctx->dec_params.cp_layer = ctx->lowqual;
405  ctx->dec_params.cp_reduce = avctx->lowres;
406 #endif // OPENJPEG_MAJOR_VERSION == 1
407 
408  // Tie decoder with decoding parameters
409  opj_setup_decoder(dec, &ctx->dec_params);
410 
411 #if OPENJPEG_MAJOR_VERSION == 1
412  stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size);
413 #else // OPENJPEG_MAJOR_VERSION == 2
414  stream = opj_stream_default_create(OPJ_STREAM_READ);
415 #endif // OPENJPEG_MAJOR_VERSION == 1
416 
417  if (!stream) {
418  av_log(avctx, AV_LOG_ERROR,
419  "Codestream could not be opened for reading.\n");
420  ret = AVERROR_EXTERNAL;
421  goto done;
422  }
423 
424 #if OPENJPEG_MAJOR_VERSION == 1
425  // Decode the header only.
426  image = opj_decode_with_info(dec, stream, NULL);
427  opj_cio_close(stream);
428  stream = NULL;
429  ret = !image;
430 #else // OPENJPEG_MAJOR_VERSION == 2
431  opj_stream_set_read_function(stream, stream_read);
432  opj_stream_set_skip_function(stream, stream_skip);
433  opj_stream_set_seek_function(stream, stream_seek);
434 #if HAVE_OPENJPEG_2_1_OPENJPEG_H
435  opj_stream_set_user_data(stream, &reader, NULL);
436 #elif HAVE_OPENJPEG_2_0_OPENJPEG_H
437  opj_stream_set_user_data(stream, &reader);
438 #else
439 #error Missing call to opj_stream_set_user_data
440 #endif
441  opj_stream_set_user_data_length(stream, avpkt->size);
442  // Decode the header only.
443  ret = !opj_read_header(stream, dec, &image);
444 #endif // OPENJPEG_MAJOR_VERSION == 1
445 
446  if (ret) {
447  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream header.\n");
448  ret = AVERROR_EXTERNAL;
449  goto done;
450  }
451 
452  width = image->x1 - image->x0;
453  height = image->y1 - image->y0;
454 
455  ret = ff_set_dimensions(avctx, width, height);
456  if (ret < 0)
457  goto done;
458 
459  if (avctx->pix_fmt != AV_PIX_FMT_NONE)
460  if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt))
461  avctx->pix_fmt = AV_PIX_FMT_NONE;
462 
463  if (avctx->pix_fmt == AV_PIX_FMT_NONE)
464  avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image);
465 
466  if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
467  av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format.\n");
468  ret = AVERROR_UNKNOWN;
469  goto done;
470  }
471  for (i = 0; i < image->numcomps; i++)
472  if (image->comps[i].prec > avctx->bits_per_raw_sample)
473  avctx->bits_per_raw_sample = image->comps[i].prec;
474 
475  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
476  goto done;
477 
478 #if OPENJPEG_MAJOR_VERSION == 1
479  ctx->dec_params.cp_limit_decoding = NO_LIMITATION;
480  ctx->dec_params.cp_reduce = avctx->lowres;
481  // Tie decoder with decoding parameters.
482  opj_setup_decoder(dec, &ctx->dec_params);
483  stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size);
484  if (!stream) {
485  av_log(avctx, AV_LOG_ERROR,
486  "Codestream could not be opened for reading.\n");
487  ret = AVERROR_EXTERNAL;
488  goto done;
489  }
490  opj_image_destroy(image);
491  // Decode the codestream
492  image = opj_decode_with_info(dec, stream, NULL);
493  ret = !image;
494 #else // OPENJPEG_MAJOR_VERSION == 2
495  ret = !opj_decode(dec, stream, image);
496 #endif // OPENJPEG_MAJOR_VERSION == 1
497 
498  if (ret) {
499  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
500  ret = AVERROR_EXTERNAL;
501  goto done;
502  }
503 
504  for (i = 0; i < image->numcomps; i++) {
505  if (!image->comps[i].data) {
506  av_log(avctx, AV_LOG_ERROR,
507  "Image component %d contains no data.\n", i);
508  ret = AVERROR_INVALIDDATA;
509  goto done;
510  }
511  }
512 
513  desc = av_pix_fmt_desc_get(avctx->pix_fmt);
514  pixel_size = desc->comp[0].step;
515  ispacked = libopenjpeg_ispacked(avctx->pix_fmt);
516 
517  switch (pixel_size) {
518  case 1:
519  if (ispacked) {
520  libopenjpeg_copy_to_packed8(picture, image);
521  } else {
522  libopenjpeg_copyto8(picture, image);
523  }
524  break;
525  case 2:
526  if (ispacked) {
527  libopenjpeg_copy_to_packed8(picture, image);
528  } else {
529  libopenjpeg_copyto16(picture, image);
530  }
531  break;
532  case 3:
533  case 4:
534  if (ispacked) {
535  libopenjpeg_copy_to_packed8(picture, image);
536  }
537  break;
538  case 6:
539  case 8:
540  if (ispacked) {
541  libopenjpeg_copy_to_packed16(picture, image);
542  }
543  break;
544  default:
545  av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size);
546  ret = AVERROR_PATCHWELCOME;
547  goto done;
548  }
549 
550  *got_frame = 1;
551  ret = buf_size;
552 
553 done:
554  opj_image_destroy(image);
555 #if OPENJPEG_MAJOR_VERSION == 2
556  opj_stream_destroy(stream);
557  opj_destroy_codec(dec);
558 #else
559  opj_cio_close(stream);
560  opj_destroy_decompress(dec);
561 #endif
562  return ret;
563 }
564 
566 {
567  const char *version = opj_version();
568  int major, minor;
569 
570  if (sscanf(version, "%d.%d", &major, &minor) == 2 && 1000*major + minor <= 1003)
572 }
573 
574 #define OFFSET(x) offsetof(LibOpenJPEGContext, x)
575 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
576 
577 static const AVOption options[] = {
578  { "lowqual", "Limit the number of layers used for decoding",
579  OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
580  { NULL },
581 };
582 
583 static const AVClass openjpeg_class = {
584  .class_name = "libopenjpeg",
585  .item_name = av_default_item_name,
586  .option = options,
587  .version = LIBAVUTIL_VERSION_INT,
588 };
589 
591  .name = "libopenjpeg",
592  .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
593  .type = AVMEDIA_TYPE_VIDEO,
594  .id = AV_CODEC_ID_JPEG2000,
595  .priv_data_size = sizeof(LibOpenJPEGContext),
599  .max_lowres = 31,
600  .priv_class = &openjpeg_class,
601  .init_static_data = libopenjpeg_static_init,
602 };
static void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image)
int plane
Which of the 4 planes contains the component.
Definition: pixdesc.h:35
static int libopenjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static enum AVPixelFormat pix_fmt
static int libopenjpeg_ispacked(enum AVPixelFormat pix_fmt)
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2193
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
AVFormatContext * ctx
Definition: movenc-test.c:48
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:210
const char * desc
Definition: nvenc.c:237
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1578
static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
Definition: ffplay.c:1410
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1870
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1008
int version
Definition: avisynth_c.h:629
static const AVClass openjpeg_class
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3042
static enum AVPixelFormat libopenjpeg_gray_pix_fmts[]
#define JP2_SIG_TYPE
AVCodec.
Definition: avcodec.h:3535
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
#define XYZ_PIXEL_FORMATS
Multithreading support functions.
static void warning_callback(const char *msg, void *data)
static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1577
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:3052
ptrdiff_t size
Definition: opengl_enc.c:101
static void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image)
#define YUV_PIXEL_FORMATS
#define av_log(a,...)
static void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image)
#define JP2_SIG_VALUE
int width
width and height of the video frame
Definition: frame.h:232
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
av_default_item_name
#define CODEC_J2K
Definition: j2kenc.c:80
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
AVS_Value void * user_data
Definition: avisynth_c.h:562
int capabilities
Codec capabilities.
Definition: avcodec.h:3554
static enum AVPixelFormat libopenjpeg_all_pix_fmts[]
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
tuple adjust
Definition: normalize.py:25
const char * name
Name of the codec implementation.
Definition: avcodec.h:3542
#define FFMAX(a, b)
Definition: common.h:94
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1016
static void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image)
#define RGB_PIXEL_FORMATS
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:322
#define FFMIN(a, b)
Definition: common.h:96
#define width
static enum AVPixelFormat libopenjpeg_yuv_pix_fmts[]
#define CODEC_JP2
Definition: j2kenc.c:79
#define FF_ARRAY_ELEMS(a)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:244
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:211
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
main external API structure.
Definition: avcodec.h:1642
void * buf
Definition: avisynth_c.h:553
Describe the class of an AVClass context structure.
Definition: log.h:67
static enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image)
opj_event_mgr_t event_mgr
int index
Definition: gxfenc.c:89
static enum AVPixelFormat libopenjpeg_rgb_pix_fmts[]
#define VD
#define OPJ(x)
int shift
Number of least significant bits that must be shifted away to get the value.
Definition: pixdesc.h:53
static av_cold void libopenjpeg_static_init(AVCodec *codec)
static void info_callback(const char *msg, void *data)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:194
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:722
common internal api header.
common internal and external API header
static int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt)
static double c[64]
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
void * priv_data
Definition: avcodec.h:1684
pixel format definitions
static const AVOption options[]
static void error_callback(const char *msg, void *data)
opj_dparameters_t dec_params
int height
Definition: frame.h:232
AVCodec ff_libopenjpeg_decoder
#define height
#define OFFSET(x)
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1554
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:953
GLuint buffer
Definition: opengl_enc.c:102
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
#define GRAY_PIXEL_FORMATS