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libopenjpegdec.c
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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 #include "libavutil/common.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/pixfmt.h"
32 
33 #include "avcodec.h"
34 #include "internal.h"
35 #include "thread.h"
36 
37 #include <openjpeg.h>
38 
39 #define JP2_SIG_TYPE 0x6A502020
40 #define JP2_SIG_VALUE 0x0D0A870A
41 
42 // pix_fmts with lower bpp have to be listed before
43 // similar pix_fmts with higher bpp.
44 #define RGB_PIXEL_FORMATS AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, \
45  AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64
46 
47 #define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8, AV_PIX_FMT_YA8, \
48  AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16
49 
50 #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVA420P, \
51  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
52  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
53  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
54  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \
55  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
56  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \
57  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \
58  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
59  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
60  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16
61 
62 #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12
63 
64 static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = {
66 };
69 };
70 static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = {
72 };
73 static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = {
75 };
76 
77 typedef struct LibOpenJPEGContext {
78  AVClass *class;
79  opj_dparameters_t dec_params;
80  int lowqual;
82 
83 static void error_callback(const char *msg, void *data)
84 {
85  av_log(data, AV_LOG_ERROR, "%s", msg);
86 }
87 
88 static void warning_callback(const char *msg, void *data)
89 {
90  av_log(data, AV_LOG_WARNING, "%s", msg);
91 }
92 
93 static void info_callback(const char *msg, void *data)
94 {
95  av_log(data, AV_LOG_DEBUG, "%s", msg);
96 }
97 
98 typedef struct BufferReader {
99  int pos;
100  int size;
101  const uint8_t *buffer;
102 } BufferReader;
103 
104 static OPJ_SIZE_T stream_read(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data)
105 {
106  BufferReader *reader = user_data;
107  int remaining;
108 
109  if (reader->pos == reader->size) {
110  return (OPJ_SIZE_T)-1;
111  }
112  remaining = reader->size - reader->pos;
113  if (nb_bytes > remaining) {
114  nb_bytes = remaining;
115  }
116  memcpy(out_buffer, reader->buffer + reader->pos, nb_bytes);
117  reader->pos += (int)nb_bytes;
118  return nb_bytes;
119 }
120 
121 static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data)
122 {
123  BufferReader *reader = user_data;
124  if (nb_bytes < 0) {
125  if (reader->pos == 0) {
126  return (OPJ_SIZE_T)-1;
127  }
128  if (nb_bytes + reader->pos < 0) {
129  nb_bytes = -reader->pos;
130  }
131  } else {
132  int remaining;
133 
134  if (reader->pos == reader->size) {
135  return (OPJ_SIZE_T)-1;
136  }
137  remaining = reader->size - reader->pos;
138  if (nb_bytes > remaining) {
139  nb_bytes = remaining;
140  }
141  }
142  reader->pos += (int)nb_bytes;
143  return nb_bytes;
144 }
145 
146 static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data)
147 {
148  BufferReader *reader = user_data;
149  if (nb_bytes < 0 || nb_bytes > reader->size) {
150  return OPJ_FALSE;
151  }
152  reader->pos = (int)nb_bytes;
153  return OPJ_TRUE;
154 }
155 
156 static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt)
157 {
158  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
159  int match = 1;
160 
161  if (desc->nb_components != image->numcomps) {
162  return 0;
163  }
164 
165  switch (desc->nb_components) {
166  case 4:
167  match = match &&
168  desc->comp[3].depth >= image->comps[3].prec &&
169  1 == image->comps[3].dx &&
170  1 == image->comps[3].dy;
171  case 3:
172  match = match &&
173  desc->comp[2].depth >= image->comps[2].prec &&
174  1 << desc->log2_chroma_w == image->comps[2].dx &&
175  1 << desc->log2_chroma_h == image->comps[2].dy;
176  case 2:
177  match = match &&
178  desc->comp[1].depth >= image->comps[1].prec &&
179  1 << desc->log2_chroma_w == image->comps[1].dx &&
180  1 << desc->log2_chroma_h == image->comps[1].dy;
181  case 1:
182  match = match &&
183  desc->comp[0].depth >= image->comps[0].prec &&
184  1 == image->comps[0].dx &&
185  1 == image->comps[0].dy;
186  default:
187  break;
188  }
189 
190  return match;
191 }
192 
193 static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) {
194  int index;
195  const enum AVPixelFormat *possible_fmts = NULL;
196  int possible_fmts_nb = 0;
197 
198  switch (image->color_space) {
199  case OPJ_CLRSPC_SRGB:
200  possible_fmts = libopenjpeg_rgb_pix_fmts;
201  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts);
202  break;
203  case OPJ_CLRSPC_GRAY:
204  possible_fmts = libopenjpeg_gray_pix_fmts;
205  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts);
206  break;
207  case OPJ_CLRSPC_SYCC:
208  possible_fmts = libopenjpeg_yuv_pix_fmts;
209  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts);
210  break;
211  default:
212  possible_fmts = libopenjpeg_all_pix_fmts;
213  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts);
214  break;
215  }
216 
217  for (index = 0; index < possible_fmts_nb; ++index)
218  if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) {
219  return possible_fmts[index];
220  }
221 
222  return AV_PIX_FMT_NONE;
223 }
224 
226 {
227  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
228  int i, component_plane;
229 
230  if (pix_fmt == AV_PIX_FMT_GRAY16)
231  return 0;
232 
233  component_plane = desc->comp[0].plane;
234  for (i = 1; i < desc->nb_components; i++)
235  if (component_plane != desc->comp[i].plane)
236  return 0;
237  return 1;
238 }
239 
240 static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) {
241  uint8_t *img_ptr;
242  int index, x, y, c;
243  for (y = 0; y < picture->height; y++) {
244  index = y * picture->width;
245  img_ptr = picture->data[0] + y * picture->linesize[0];
246  for (x = 0; x < picture->width; x++, index++)
247  for (c = 0; c < image->numcomps; c++)
248  *img_ptr++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index];
249  }
250 }
251 
252 static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) {
253  uint16_t *img_ptr;
255  int index, x, y, c;
256  int adjust[4];
257  for (x = 0; x < image->numcomps; x++)
258  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
259 
260  for (y = 0; y < picture->height; y++) {
261  index = y * picture->width;
262  img_ptr = (uint16_t *) (picture->data[0] + y * picture->linesize[0]);
263  for (x = 0; x < picture->width; x++, index++)
264  for (c = 0; c < image->numcomps; c++)
265  *img_ptr++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd +
266  (unsigned)image->comps[c].data[index] << adjust[c];
267  }
268 }
269 
270 static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) {
271  int *comp_data;
272  uint8_t *img_ptr;
273  int index, x, y;
274 
275  for (index = 0; index < image->numcomps; index++) {
276  comp_data = image->comps[index].data;
277  for (y = 0; y < image->comps[index].h; y++) {
278  img_ptr = picture->data[index] + y * picture->linesize[index];
279  for (x = 0; x < image->comps[index].w; x++) {
280  *img_ptr = 0x80 * image->comps[index].sgnd + *comp_data;
281  img_ptr++;
282  comp_data++;
283  }
284  }
285  }
286 }
287 
288 static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) {
289  int *comp_data;
290  uint16_t *img_ptr;
292  int index, x, y;
293  int adjust[4];
294  for (x = 0; x < image->numcomps; x++)
295  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
296 
297  for (index = 0; index < image->numcomps; index++) {
298  comp_data = image->comps[index].data;
299  for (y = 0; y < image->comps[index].h; y++) {
300  img_ptr = (uint16_t *)(picture->data[index] + y * picture->linesize[index]);
301  for (x = 0; x < image->comps[index].w; x++) {
302  *img_ptr = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd +
303  (unsigned)*comp_data << adjust[index];
304  img_ptr++;
305  comp_data++;
306  }
307  }
308  }
309 }
310 
312 {
313  LibOpenJPEGContext *ctx = avctx->priv_data;
314 
315  opj_set_default_decoder_parameters(&ctx->dec_params);
316  return 0;
317 }
318 
320  void *data, int *got_frame,
321  AVPacket *avpkt)
322 {
323  uint8_t *buf = avpkt->data;
324  int buf_size = avpkt->size;
325  LibOpenJPEGContext *ctx = avctx->priv_data;
326  ThreadFrame frame = { .f = data };
327  AVFrame *picture = data;
328  const AVPixFmtDescriptor *desc;
329  int width, height, ret;
330  int pixel_size = 0;
331  int ispacked = 0;
332  int i;
333  opj_image_t *image = NULL;
334  BufferReader reader = {0, avpkt->size, avpkt->data};
335  opj_codec_t *dec = NULL;
336  opj_stream_t *stream = NULL;
337 
338  *got_frame = 0;
339 
340  // Check if input is a raw jpeg2k codestream or in jp2 wrapping
341  if ((AV_RB32(buf) == 12) &&
342  (AV_RB32(buf + 4) == JP2_SIG_TYPE) &&
343  (AV_RB32(buf + 8) == JP2_SIG_VALUE)) {
344  dec = opj_create_decompress(OPJ_CODEC_JP2);
345  } else {
346  /* If the AVPacket contains a jp2c box, then skip to
347  * the starting byte of the codestream. */
348  if (AV_RB32(buf + 4) == AV_RB32("jp2c"))
349  buf += 8;
350  dec = opj_create_decompress(OPJ_CODEC_J2K);
351  }
352 
353  if (!dec) {
354  av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n");
355  ret = AVERROR_EXTERNAL;
356  goto done;
357  }
358 
359  if (!opj_set_error_handler(dec, error_callback, avctx) ||
360  !opj_set_warning_handler(dec, warning_callback, avctx) ||
361  !opj_set_info_handler(dec, info_callback, avctx)) {
362  av_log(avctx, AV_LOG_ERROR, "Error setting decoder handlers.\n");
363  ret = AVERROR_EXTERNAL;
364  goto done;
365  }
366 
367  ctx->dec_params.cp_layer = ctx->lowqual;
368  ctx->dec_params.cp_reduce = avctx->lowres;
369 
370  // Tie decoder with decoding parameters
371  opj_setup_decoder(dec, &ctx->dec_params);
372 
373  stream = opj_stream_default_create(OPJ_STREAM_READ);
374 
375  if (!stream) {
376  av_log(avctx, AV_LOG_ERROR,
377  "Codestream could not be opened for reading.\n");
378  ret = AVERROR_EXTERNAL;
379  goto done;
380  }
381 
382  opj_stream_set_read_function(stream, stream_read);
383  opj_stream_set_skip_function(stream, stream_skip);
384  opj_stream_set_seek_function(stream, stream_seek);
385  opj_stream_set_user_data(stream, &reader, NULL);
386  opj_stream_set_user_data_length(stream, avpkt->size);
387  // Decode the header only.
388  ret = !opj_read_header(stream, dec, &image);
389 
390  if (ret) {
391  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream header.\n");
392  ret = AVERROR_EXTERNAL;
393  goto done;
394  }
395 
396  width = image->x1 - image->x0;
397  height = image->y1 - image->y0;
398 
399  ret = ff_set_dimensions(avctx, width, height);
400  if (ret < 0)
401  goto done;
402 
403  if (avctx->pix_fmt != AV_PIX_FMT_NONE)
404  if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt))
405  avctx->pix_fmt = AV_PIX_FMT_NONE;
406 
407  if (avctx->pix_fmt == AV_PIX_FMT_NONE)
408  avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image);
409 
410  if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
411  av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format.\n");
412  ret = AVERROR_UNKNOWN;
413  goto done;
414  }
415  for (i = 0; i < image->numcomps; i++)
416  if (image->comps[i].prec > avctx->bits_per_raw_sample)
417  avctx->bits_per_raw_sample = image->comps[i].prec;
418 
419  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
420  goto done;
421 
422  ret = !opj_decode(dec, stream, image);
423 
424  if (ret) {
425  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
426  ret = AVERROR_EXTERNAL;
427  goto done;
428  }
429 
430  for (i = 0; i < image->numcomps; i++) {
431  if (!image->comps[i].data) {
432  av_log(avctx, AV_LOG_ERROR,
433  "Image component %d contains no data.\n", i);
434  ret = AVERROR_INVALIDDATA;
435  goto done;
436  }
437  }
438 
439  desc = av_pix_fmt_desc_get(avctx->pix_fmt);
440  pixel_size = desc->comp[0].step;
441  ispacked = libopenjpeg_ispacked(avctx->pix_fmt);
442 
443  switch (pixel_size) {
444  case 1:
445  if (ispacked) {
446  libopenjpeg_copy_to_packed8(picture, image);
447  } else {
448  libopenjpeg_copyto8(picture, image);
449  }
450  break;
451  case 2:
452  if (ispacked) {
453  libopenjpeg_copy_to_packed8(picture, image);
454  } else {
455  libopenjpeg_copyto16(picture, image);
456  }
457  break;
458  case 3:
459  case 4:
460  if (ispacked) {
461  libopenjpeg_copy_to_packed8(picture, image);
462  }
463  break;
464  case 6:
465  case 8:
466  if (ispacked) {
467  libopenjpeg_copy_to_packed16(picture, image);
468  }
469  break;
470  default:
471  avpriv_report_missing_feature(avctx, "Pixel size %d", pixel_size);
472  ret = AVERROR_PATCHWELCOME;
473  goto done;
474  }
475 
476  *got_frame = 1;
477  picture->pict_type = AV_PICTURE_TYPE_I;
478  picture->key_frame = 1;
479  ret = buf_size;
480 
481 done:
482  opj_image_destroy(image);
483  opj_stream_destroy(stream);
484  opj_destroy_codec(dec);
485  return ret;
486 }
487 
488 #define OFFSET(x) offsetof(LibOpenJPEGContext, x)
489 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
490 
491 static const AVOption options[] = {
492  { "lowqual", "Limit the number of layers used for decoding",
493  OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
494  { NULL },
495 };
496 
497 static const AVClass openjpeg_class = {
498  .class_name = "libopenjpeg",
499  .item_name = av_default_item_name,
500  .option = options,
501  .version = LIBAVUTIL_VERSION_INT,
502 };
503 
505  .name = "libopenjpeg",
506  .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
507  .type = AVMEDIA_TYPE_VIDEO,
508  .id = AV_CODEC_ID_JPEG2000,
509  .priv_data_size = sizeof(LibOpenJPEGContext),
513  .max_lowres = 31,
514  .priv_class = &openjpeg_class,
515  .wrapper_name = "libopenjpeg",
516 };
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:2363
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
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:196
const char * desc
Definition: nvenc.c:63
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1415
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1711
static const AVClass openjpeg_class
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2725
static enum AVPixelFormat libopenjpeg_gray_pix_fmts[]
#define JP2_SIG_TYPE
AVCodec.
Definition: avcodec.h:3365
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
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
#define height
uint8_t * data
Definition: avcodec.h:1414
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2733
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)
static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data)
#define JP2_SIG_VALUE
int width
Definition: frame.h:259
#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
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
AVS_Value void * user_data
Definition: avisynth_c.h:699
static enum AVPixelFormat libopenjpeg_all_pix_fmts[]
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
uint16_t width
Definition: gdv.c:47
tuple adjust
Definition: normalize.py:25
const char * name
Name of the codec implementation.
Definition: avcodec.h:3372
#define FFMAX(a, b)
Definition: common.h:94
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1012
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
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:352
#define FFMIN(a, b)
Definition: common.h:96
static OPJ_SIZE_T stream_read(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data)
AVFormatContext * ctx
Definition: movenc.c:48
static enum AVPixelFormat libopenjpeg_yuv_pix_fmts[]
#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:274
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
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:1502
void * buf
Definition: avisynth_c.h:690
Describe the class of an AVClass context structure.
Definition: log.h:67
static enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image)
int index
Definition: gxfenc.c:89
static enum AVPixelFormat libopenjpeg_rgb_pix_fmts[]
#define VD
int shift
Number of least significant bits that must be shifted away to get the value.
Definition: pixdesc.h:53
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
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:215
int
const uint8_t * buffer
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:1529
pixel format definitions
static const AVOption options[]
static void error_callback(const char *msg, void *data)
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
opj_dparameters_t dec_params
int height
Definition: frame.h:259
AVCodec ff_libopenjpeg_decoder
static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data)
#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:1391
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
#define GRAY_PIXEL_FORMATS