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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_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, \
49  AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16
50 
51 #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVA420P, \
52  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
53  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
54  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
55  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \
56  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
57  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \
58  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \
59  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
60  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
61  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16
62 
63 #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12
64 
65 static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = {
67 };
70 };
71 static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = {
73 };
74 static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = {
76 };
77 
78 typedef struct LibOpenJPEGContext {
79  AVClass *class;
80  opj_dparameters_t dec_params;
81  int lowqual;
83 
84 static void error_callback(const char *msg, void *data)
85 {
86  av_log(data, AV_LOG_ERROR, "%s", msg);
87 }
88 
89 static void warning_callback(const char *msg, void *data)
90 {
91  av_log(data, AV_LOG_WARNING, "%s", msg);
92 }
93 
94 static void info_callback(const char *msg, void *data)
95 {
96  av_log(data, AV_LOG_DEBUG, "%s", msg);
97 }
98 
99 typedef struct BufferReader {
100  int pos;
101  int size;
102  const uint8_t *buffer;
103 } BufferReader;
104 
105 static OPJ_SIZE_T stream_read(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data)
106 {
107  BufferReader *reader = user_data;
108  int remaining;
109 
110  if (reader->pos == reader->size) {
111  return (OPJ_SIZE_T)-1;
112  }
113  remaining = reader->size - reader->pos;
114  if (nb_bytes > remaining) {
115  nb_bytes = remaining;
116  }
117  memcpy(out_buffer, reader->buffer + reader->pos, nb_bytes);
118  reader->pos += (int)nb_bytes;
119  return nb_bytes;
120 }
121 
122 static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data)
123 {
124  BufferReader *reader = user_data;
125  if (nb_bytes < 0) {
126  if (reader->pos == 0) {
127  return (OPJ_SIZE_T)-1;
128  }
129  if (nb_bytes + reader->pos < 0) {
130  nb_bytes = -reader->pos;
131  }
132  } else {
133  int remaining;
134 
135  if (reader->pos == reader->size) {
136  return (OPJ_SIZE_T)-1;
137  }
138  remaining = reader->size - reader->pos;
139  if (nb_bytes > remaining) {
140  nb_bytes = remaining;
141  }
142  }
143  reader->pos += (int)nb_bytes;
144  return nb_bytes;
145 }
146 
147 static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data)
148 {
149  BufferReader *reader = user_data;
150  if (nb_bytes < 0 || nb_bytes > reader->size) {
151  return OPJ_FALSE;
152  }
153  reader->pos = (int)nb_bytes;
154  return OPJ_TRUE;
155 }
156 
157 static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt)
158 {
159  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
160  int match = 1;
161 
162  if (desc->nb_components != image->numcomps) {
163  return 0;
164  }
165 
166  switch (desc->nb_components) {
167  case 4:
168  match = match &&
169  desc->comp[3].depth >= image->comps[3].prec &&
170  1 == image->comps[3].dx &&
171  1 == image->comps[3].dy;
172  case 3:
173  match = match &&
174  desc->comp[2].depth >= image->comps[2].prec &&
175  1 << desc->log2_chroma_w == image->comps[2].dx &&
176  1 << desc->log2_chroma_h == image->comps[2].dy;
177  case 2:
178  match = match &&
179  desc->comp[1].depth >= image->comps[1].prec &&
180  1 << desc->log2_chroma_w == image->comps[1].dx &&
181  1 << desc->log2_chroma_h == image->comps[1].dy;
182  case 1:
183  match = match &&
184  desc->comp[0].depth >= image->comps[0].prec &&
185  1 == image->comps[0].dx &&
186  1 == image->comps[0].dy;
187  default:
188  break;
189  }
190 
191  return match;
192 }
193 
194 static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) {
195  int index;
196  const enum AVPixelFormat *possible_fmts = NULL;
197  int possible_fmts_nb = 0;
198 
199  switch (image->color_space) {
200  case OPJ_CLRSPC_SRGB:
201  possible_fmts = libopenjpeg_rgb_pix_fmts;
202  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts);
203  break;
204  case OPJ_CLRSPC_GRAY:
205  possible_fmts = libopenjpeg_gray_pix_fmts;
206  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts);
207  break;
208  case OPJ_CLRSPC_SYCC:
209  possible_fmts = libopenjpeg_yuv_pix_fmts;
210  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts);
211  break;
212  default:
213  possible_fmts = libopenjpeg_all_pix_fmts;
214  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts);
215  break;
216  }
217 
218  for (index = 0; index < possible_fmts_nb; ++index)
219  if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) {
220  return possible_fmts[index];
221  }
222 
223  return AV_PIX_FMT_NONE;
224 }
225 
227 {
228  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
229  int i, component_plane;
230 
231  if (pix_fmt == AV_PIX_FMT_GRAY16)
232  return 0;
233 
234  component_plane = desc->comp[0].plane;
235  for (i = 1; i < desc->nb_components; i++)
236  if (component_plane != desc->comp[i].plane)
237  return 0;
238  return 1;
239 }
240 
241 static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) {
242  uint8_t *img_ptr;
243  int index, x, y, c;
244  for (y = 0; y < picture->height; y++) {
245  index = y * picture->width;
246  img_ptr = picture->data[0] + y * picture->linesize[0];
247  for (x = 0; x < picture->width; x++, index++)
248  for (c = 0; c < image->numcomps; c++)
249  *img_ptr++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index];
250  }
251 }
252 
253 static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) {
254  uint16_t *img_ptr;
256  int index, x, y, c;
257  int adjust[4];
258  for (x = 0; x < image->numcomps; x++)
259  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
260 
261  for (y = 0; y < picture->height; y++) {
262  index = y * picture->width;
263  img_ptr = (uint16_t *) (picture->data[0] + y * picture->linesize[0]);
264  for (x = 0; x < picture->width; x++, index++)
265  for (c = 0; c < image->numcomps; c++)
266  *img_ptr++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd +
267  (unsigned)image->comps[c].data[index] << adjust[c];
268  }
269 }
270 
271 static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) {
272  int *comp_data;
273  uint8_t *img_ptr;
274  int index, x, y;
275 
276  for (index = 0; index < image->numcomps; index++) {
277  comp_data = image->comps[index].data;
278  for (y = 0; y < image->comps[index].h; y++) {
279  img_ptr = picture->data[index] + y * picture->linesize[index];
280  for (x = 0; x < image->comps[index].w; x++) {
281  *img_ptr = 0x80 * image->comps[index].sgnd + *comp_data;
282  img_ptr++;
283  comp_data++;
284  }
285  }
286  }
287 }
288 
289 static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) {
290  int *comp_data;
291  uint16_t *img_ptr;
293  int index, x, y;
294  int adjust[4];
295  for (x = 0; x < image->numcomps; x++)
296  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
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 = (uint16_t *)(picture->data[index] + y * picture->linesize[index]);
302  for (x = 0; x < image->comps[index].w; x++) {
303  *img_ptr = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd +
304  (unsigned)*comp_data << adjust[index];
305  img_ptr++;
306  comp_data++;
307  }
308  }
309  }
310 }
311 
313 {
314  LibOpenJPEGContext *ctx = avctx->priv_data;
315 
316  opj_set_default_decoder_parameters(&ctx->dec_params);
317  return 0;
318 }
319 
321  void *data, int *got_frame,
322  AVPacket *avpkt)
323 {
324  uint8_t *buf = avpkt->data;
325  int buf_size = avpkt->size;
326  LibOpenJPEGContext *ctx = avctx->priv_data;
327  ThreadFrame frame = { .f = data };
328  AVFrame *picture = data;
329  const AVPixFmtDescriptor *desc;
330  int width, height, ret;
331  int pixel_size = 0;
332  int ispacked = 0;
333  int i;
334  opj_image_t *image = NULL;
335  BufferReader reader = {0, avpkt->size, avpkt->data};
336  opj_codec_t *dec = NULL;
337  opj_stream_t *stream = NULL;
338 
339  *got_frame = 0;
340 
341  // Check if input is a raw jpeg2k codestream or in jp2 wrapping
342  if ((AV_RB32(buf) == 12) &&
343  (AV_RB32(buf + 4) == JP2_SIG_TYPE) &&
344  (AV_RB32(buf + 8) == JP2_SIG_VALUE)) {
345  dec = opj_create_decompress(OPJ_CODEC_JP2);
346  } else {
347  /* If the AVPacket contains a jp2c box, then skip to
348  * the starting byte of the codestream. */
349  if (AV_RB32(buf + 4) == AV_RB32("jp2c"))
350  buf += 8;
351  dec = opj_create_decompress(OPJ_CODEC_J2K);
352  }
353 
354  if (!dec) {
355  av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n");
356  ret = AVERROR_EXTERNAL;
357  goto done;
358  }
359 
360  if (!opj_set_error_handler(dec, error_callback, avctx) ||
361  !opj_set_warning_handler(dec, warning_callback, avctx) ||
362  !opj_set_info_handler(dec, info_callback, avctx)) {
363  av_log(avctx, AV_LOG_ERROR, "Error setting decoder handlers.\n");
364  ret = AVERROR_EXTERNAL;
365  goto done;
366  }
367 
368  ctx->dec_params.cp_layer = ctx->lowqual;
369  ctx->dec_params.cp_reduce = avctx->lowres;
370 
371  // Tie decoder with decoding parameters
372  opj_setup_decoder(dec, &ctx->dec_params);
373 
374  stream = opj_stream_default_create(OPJ_STREAM_READ);
375 
376  if (!stream) {
377  av_log(avctx, AV_LOG_ERROR,
378  "Codestream could not be opened for reading.\n");
379  ret = AVERROR_EXTERNAL;
380  goto done;
381  }
382 
383  opj_stream_set_read_function(stream, stream_read);
384  opj_stream_set_skip_function(stream, stream_skip);
385  opj_stream_set_seek_function(stream, stream_seek);
386  opj_stream_set_user_data(stream, &reader, NULL);
387  opj_stream_set_user_data_length(stream, avpkt->size);
388  // Decode the header only.
389  ret = !opj_read_header(stream, dec, &image);
390 
391  if (ret) {
392  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream header.\n");
393  ret = AVERROR_EXTERNAL;
394  goto done;
395  }
396 
397  width = image->x1 - image->x0;
398  height = image->y1 - image->y0;
399 
400  ret = ff_set_dimensions(avctx, width, height);
401  if (ret < 0)
402  goto done;
403 
404  if (avctx->pix_fmt != AV_PIX_FMT_NONE)
405  if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt))
406  avctx->pix_fmt = AV_PIX_FMT_NONE;
407 
408  if (avctx->pix_fmt == AV_PIX_FMT_NONE)
409  avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image);
410 
411  if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
412  av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format.\n");
413  ret = AVERROR_UNKNOWN;
414  goto done;
415  }
416  for (i = 0; i < image->numcomps; i++)
417  if (image->comps[i].prec > avctx->bits_per_raw_sample)
418  avctx->bits_per_raw_sample = image->comps[i].prec;
419 
420  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
421  goto done;
422 
423  ret = !opj_decode(dec, stream, image);
424 
425  if (ret) {
426  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
427  ret = AVERROR_EXTERNAL;
428  goto done;
429  }
430 
431  for (i = 0; i < image->numcomps; i++) {
432  if (!image->comps[i].data) {
433  av_log(avctx, AV_LOG_ERROR,
434  "Image component %d contains no data.\n", i);
435  ret = AVERROR_INVALIDDATA;
436  goto done;
437  }
438  }
439 
440  desc = av_pix_fmt_desc_get(avctx->pix_fmt);
441  pixel_size = desc->comp[0].step;
442  ispacked = libopenjpeg_ispacked(avctx->pix_fmt);
443 
444  switch (pixel_size) {
445  case 1:
446  if (ispacked) {
447  libopenjpeg_copy_to_packed8(picture, image);
448  } else {
449  libopenjpeg_copyto8(picture, image);
450  }
451  break;
452  case 2:
453  if (ispacked) {
454  libopenjpeg_copy_to_packed8(picture, image);
455  } else {
456  libopenjpeg_copyto16(picture, image);
457  }
458  break;
459  case 3:
460  case 4:
461  if (ispacked) {
462  libopenjpeg_copy_to_packed8(picture, image);
463  }
464  break;
465  case 6:
466  case 8:
467  if (ispacked) {
468  libopenjpeg_copy_to_packed16(picture, image);
469  }
470  break;
471  default:
472  avpriv_report_missing_feature(avctx, "Pixel size %d", pixel_size);
473  ret = AVERROR_PATCHWELCOME;
474  goto done;
475  }
476 
477  *got_frame = 1;
478  picture->pict_type = AV_PICTURE_TYPE_I;
479  picture->key_frame = 1;
480  ret = buf_size;
481 
482 done:
483  opj_image_destroy(image);
484  opj_stream_destroy(stream);
485  opj_destroy_codec(dec);
486  return ret;
487 }
488 
489 #define OFFSET(x) offsetof(LibOpenJPEGContext, x)
490 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
491 
492 static const AVOption options[] = {
493  { "lowqual", "Limit the number of layers used for decoding",
494  OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
495  { NULL },
496 };
497 
498 static const AVClass openjpeg_class = {
499  .class_name = "libopenjpeg",
500  .item_name = av_default_item_name,
501  .option = options,
502  .version = LIBAVUTIL_VERSION_INT,
503 };
504 
506  .name = "libopenjpeg",
507  .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
508  .type = AVMEDIA_TYPE_VIDEO,
509  .id = AV_CODEC_ID_JPEG2000,
510  .priv_data_size = sizeof(LibOpenJPEGContext),
514  .max_lowres = 31,
515  .priv_class = &openjpeg_class,
516  .wrapper_name = "libopenjpeg",
517 };
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:2384
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
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:104
const char * desc
Definition: nvenc.c:65
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1433
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1729
static const AVClass openjpeg_class
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2743
static enum AVPixelFormat libopenjpeg_gray_pix_fmts[]
#define JP2_SIG_TYPE
AVCodec.
Definition: avcodec.h:3410
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:1432
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2751
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:276
#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:3417
#define FFMAX(a, b)
Definition: common.h:94
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1017
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:301
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:356
#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:291
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
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:1520
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:232
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:1547
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:296
opj_dparameters_t dec_params
int height
Definition: frame.h:276
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:1409
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:961
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
#define GRAY_PIXEL_FORMATS