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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 #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_1_5_OPENJPEG_H
40 # include <openjpeg-1.5/openjpeg.h>
41 #else
42 # include <openjpeg.h>
43 #endif
44 
45 #define JP2_SIG_TYPE 0x6A502020
46 #define JP2_SIG_VALUE 0x0D0A870A
47 
48 // pix_fmts with lower bpp have to be listed before
49 // similar pix_fmts with higher bpp.
50 #define RGB_PIXEL_FORMATS AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, \
51  AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64
52 
53 #define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8, AV_PIX_FMT_YA8, \
54  AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16
55 
56 #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVA420P, \
57  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
58  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
59  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
60  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \
61  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
62  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \
63  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \
64  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
65  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
66  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16
67 
68 #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12
69 
70 static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = {
72 };
75 };
76 static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = {
78 };
79 static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = {
81 };
82 
83 typedef struct LibOpenJPEGContext {
84  AVClass *class;
85  opj_dparameters_t dec_params;
86  opj_event_mgr_t event_mgr;
87  int lowqual;
89 
90 static void error_callback(const char *msg, void *data)
91 {
92  av_log(data, AV_LOG_ERROR, "%s", msg);
93 }
94 
95 static void warning_callback(const char *msg, void *data)
96 {
97  av_log(data, AV_LOG_WARNING, "%s", msg);
98 }
99 
100 static void info_callback(const char *msg, void *data)
101 {
102  av_log(data, AV_LOG_DEBUG, "%s", msg);
103 }
104 
105 static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt)
106 {
107  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
108  int match = 1;
109 
110  if (desc->nb_components != image->numcomps) {
111  return 0;
112  }
113 
114  switch (desc->nb_components) {
115  case 4:
116  match = match &&
117  desc->comp[3].depth_minus1 + 1 >= image->comps[3].prec &&
118  1 == image->comps[3].dx &&
119  1 == image->comps[3].dy;
120  case 3:
121  match = match &&
122  desc->comp[2].depth_minus1 + 1 >= image->comps[2].prec &&
123  1 << desc->log2_chroma_w == image->comps[2].dx &&
124  1 << desc->log2_chroma_h == image->comps[2].dy;
125  case 2:
126  match = match &&
127  desc->comp[1].depth_minus1 + 1 >= image->comps[1].prec &&
128  1 << desc->log2_chroma_w == image->comps[1].dx &&
129  1 << desc->log2_chroma_h == image->comps[1].dy;
130  case 1:
131  match = match &&
132  desc->comp[0].depth_minus1 + 1 >= image->comps[0].prec &&
133  1 == image->comps[0].dx &&
134  1 == image->comps[0].dy;
135  default:
136  break;
137  }
138 
139  return match;
140 }
141 
142 static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) {
143  int index;
144  const enum AVPixelFormat *possible_fmts = NULL;
145  int possible_fmts_nb = 0;
146 
147  switch (image->color_space) {
148  case CLRSPC_SRGB:
149  possible_fmts = libopenjpeg_rgb_pix_fmts;
150  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts);
151  break;
152  case CLRSPC_GRAY:
153  possible_fmts = libopenjpeg_gray_pix_fmts;
154  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts);
155  break;
156  case CLRSPC_SYCC:
157  possible_fmts = libopenjpeg_yuv_pix_fmts;
158  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts);
159  break;
160  default:
161  possible_fmts = libopenjpeg_all_pix_fmts;
162  possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts);
163  break;
164  }
165 
166  for (index = 0; index < possible_fmts_nb; ++index)
167  if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) {
168  return possible_fmts[index];
169  }
170 
171  return AV_PIX_FMT_NONE;
172 }
173 
175 {
176  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
177  int i, component_plane;
178 
179  if (pix_fmt == AV_PIX_FMT_GRAY16)
180  return 0;
181 
182  component_plane = desc->comp[0].plane;
183  for (i = 1; i < desc->nb_components; i++)
184  if (component_plane != desc->comp[i].plane)
185  return 0;
186  return 1;
187 }
188 
189 static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) {
190  uint8_t *img_ptr;
191  int index, x, y, c;
192  for (y = 0; y < picture->height; y++) {
193  index = y * picture->width;
194  img_ptr = picture->data[0] + y * picture->linesize[0];
195  for (x = 0; x < picture->width; x++, index++)
196  for (c = 0; c < image->numcomps; c++)
197  *img_ptr++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index];
198  }
199 }
200 
201 static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) {
202  uint16_t *img_ptr;
203  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(picture->format);
204  int index, x, y, c;
205  int adjust[4];
206  for (x = 0; x < image->numcomps; x++)
207  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth_minus1 + 1 - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
208 
209  for (y = 0; y < picture->height; y++) {
210  index = y * picture->width;
211  img_ptr = (uint16_t *) (picture->data[0] + y * picture->linesize[0]);
212  for (x = 0; x < picture->width; x++, index++)
213  for (c = 0; c < image->numcomps; c++)
214  *img_ptr++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd +
215  (unsigned)image->comps[c].data[index] << adjust[c];
216  }
217 }
218 
219 static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) {
220  int *comp_data;
221  uint8_t *img_ptr;
222  int index, x, y;
223 
224  for (index = 0; index < image->numcomps; index++) {
225  comp_data = image->comps[index].data;
226  for (y = 0; y < image->comps[index].h; y++) {
227  img_ptr = picture->data[index] + y * picture->linesize[index];
228  for (x = 0; x < image->comps[index].w; x++) {
229  *img_ptr = 0x80 * image->comps[index].sgnd + *comp_data;
230  img_ptr++;
231  comp_data++;
232  }
233  }
234  }
235 }
236 
237 static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) {
238  int *comp_data;
239  uint16_t *img_ptr;
240  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(picture->format);
241  int index, x, y;
242  int adjust[4];
243  for (x = 0; x < image->numcomps; x++)
244  adjust[x] = FFMAX(FFMIN(desc->comp[x].depth_minus1 + 1 - image->comps[x].prec, 8), 0) + desc->comp[x].shift;
245 
246  for (index = 0; index < image->numcomps; index++) {
247  comp_data = image->comps[index].data;
248  for (y = 0; y < image->comps[index].h; y++) {
249  img_ptr = (uint16_t *)(picture->data[index] + y * picture->linesize[index]);
250  for (x = 0; x < image->comps[index].w; x++) {
251  *img_ptr = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd +
252  (unsigned)*comp_data << adjust[index];
253  img_ptr++;
254  comp_data++;
255  }
256  }
257  }
258 }
259 
261 {
262  LibOpenJPEGContext *ctx = avctx->priv_data;
263 
264  opj_set_default_decoder_parameters(&ctx->dec_params);
265  return 0;
266 }
267 
269  void *data, int *got_frame,
270  AVPacket *avpkt)
271 {
272  uint8_t *buf = avpkt->data;
273  int buf_size = avpkt->size;
274  LibOpenJPEGContext *ctx = avctx->priv_data;
275  ThreadFrame frame = { .f = data };
276  AVFrame *picture = data;
277  const AVPixFmtDescriptor *desc;
278  opj_dinfo_t *dec;
279  opj_cio_t *stream;
280  opj_image_t *image;
281  int width, height, ret;
282  int pixel_size = 0;
283  int ispacked = 0;
284  int i;
285 
286  *got_frame = 0;
287 
288  // Check if input is a raw jpeg2k codestream or in jp2 wrapping
289  if ((AV_RB32(buf) == 12) &&
290  (AV_RB32(buf + 4) == JP2_SIG_TYPE) &&
291  (AV_RB32(buf + 8) == JP2_SIG_VALUE)) {
292  dec = opj_create_decompress(CODEC_JP2);
293  } else {
294  /* If the AVPacket contains a jp2c box, then skip to
295  * the starting byte of the codestream. */
296  if (AV_RB32(buf + 4) == AV_RB32("jp2c"))
297  buf += 8;
298  dec = opj_create_decompress(CODEC_J2K);
299  }
300 
301  if (!dec) {
302  av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n");
303  return AVERROR_UNKNOWN;
304  }
305  memset(&ctx->event_mgr, 0, sizeof(ctx->event_mgr));
306  ctx->event_mgr.info_handler = info_callback;
307  ctx->event_mgr.error_handler = error_callback;
308  ctx->event_mgr.warning_handler = warning_callback;
309  opj_set_event_mgr((opj_common_ptr) dec, &ctx->event_mgr, avctx);
310  ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER;
311  ctx->dec_params.cp_layer = ctx->lowqual;
312  // Tie decoder with decoding parameters
313  opj_setup_decoder(dec, &ctx->dec_params);
314  stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size);
315 
316  if (!stream) {
317  av_log(avctx, AV_LOG_ERROR,
318  "Codestream could not be opened for reading.\n");
319  opj_destroy_decompress(dec);
320  return AVERROR_UNKNOWN;
321  }
322 
323  // Decode the header only.
324  image = opj_decode_with_info(dec, stream, NULL);
325  opj_cio_close(stream);
326 
327  if (!image) {
328  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
329  opj_destroy_decompress(dec);
330  return AVERROR_UNKNOWN;
331  }
332 
333  width = image->x1 - image->x0;
334  height = image->y1 - image->y0;
335 
336  ret = ff_set_dimensions(avctx, width, height);
337  if (ret < 0)
338  goto done;
339 
340  if (avctx->pix_fmt != AV_PIX_FMT_NONE)
341  if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt))
342  avctx->pix_fmt = AV_PIX_FMT_NONE;
343 
344  if (avctx->pix_fmt == AV_PIX_FMT_NONE)
345  avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image);
346 
347  if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
348  av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format\n");
349  goto done;
350  }
351  for (i = 0; i < image->numcomps; i++)
352  if (image->comps[i].prec > avctx->bits_per_raw_sample)
353  avctx->bits_per_raw_sample = image->comps[i].prec;
354 
355  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
356  goto done;
357 
358  ctx->dec_params.cp_limit_decoding = NO_LIMITATION;
359  ctx->dec_params.cp_reduce = avctx->lowres;
360  // Tie decoder with decoding parameters.
361  opj_setup_decoder(dec, &ctx->dec_params);
362  stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size);
363  if (!stream) {
364  av_log(avctx, AV_LOG_ERROR,
365  "Codestream could not be opened for reading.\n");
366  ret = AVERROR_UNKNOWN;
367  goto done;
368  }
369 
370  opj_image_destroy(image);
371  // Decode the codestream
372  image = opj_decode_with_info(dec, stream, NULL);
373  opj_cio_close(stream);
374 
375  if (!image) {
376  av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
377  ret = AVERROR_UNKNOWN;
378  goto done;
379  }
380 
381  for (i = 0; i < image->numcomps; i++) {
382  if (!image->comps[i].data) {
383  av_log(avctx, AV_LOG_ERROR,
384  "Image component %d contains no data.\n", i);
385  ret = AVERROR_INVALIDDATA;
386  goto done;
387  }
388  }
389 
390  desc = av_pix_fmt_desc_get(avctx->pix_fmt);
391  pixel_size = desc->comp[0].step_minus1 + 1;
392  ispacked = libopenjpeg_ispacked(avctx->pix_fmt);
393 
394  switch (pixel_size) {
395  case 1:
396  if (ispacked) {
397  libopenjpeg_copy_to_packed8(picture, image);
398  } else {
399  libopenjpeg_copyto8(picture, image);
400  }
401  break;
402  case 2:
403  if (ispacked) {
404  libopenjpeg_copy_to_packed8(picture, image);
405  } else {
406  libopenjpeg_copyto16(picture, image);
407  }
408  break;
409  case 3:
410  case 4:
411  if (ispacked) {
412  libopenjpeg_copy_to_packed8(picture, image);
413  }
414  break;
415  case 6:
416  case 8:
417  if (ispacked) {
418  libopenjpeg_copy_to_packed16(picture, image);
419  }
420  break;
421  default:
422  av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size);
423  ret = AVERROR_PATCHWELCOME;
424  goto done;
425  }
426 
427  *got_frame = 1;
428  ret = buf_size;
429 
430 done:
431  opj_image_destroy(image);
432  opj_destroy_decompress(dec);
433  return ret;
434 }
435 
437 {
438  const char *version = opj_version();
439  int major, minor;
440 
441  if (sscanf(version, "%d.%d", &major, &minor) == 2 && 1000*major + minor <= 1003)
443 }
444 
445 #define OFFSET(x) offsetof(LibOpenJPEGContext, x)
446 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
447 
448 static const AVOption options[] = {
449  { "lowqual", "Limit the number of layers used for decoding",
450  OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
451  { NULL },
452 };
453 
454 static const AVClass openjpeg_class = {
455  .class_name = "libopenjpeg",
456  .item_name = av_default_item_name,
457  .option = options,
458  .version = LIBAVUTIL_VERSION_INT,
459 };
460 
462  .name = "libopenjpeg",
463  .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
464  .type = AVMEDIA_TYPE_VIDEO,
465  .id = AV_CODEC_ID_JPEG2000,
466  .priv_data_size = sizeof(LibOpenJPEGContext),
470  .max_lowres = 31,
471  .priv_class = &openjpeg_class,
473 };
static void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image)
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:2129
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
AVOption.
Definition: opt.h:255
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:62
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:216
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1424
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1722
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:912
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:3003
static enum AVPixelFormat libopenjpeg_gray_pix_fmts[]
#define JP2_SIG_TYPE
AVCodec.
Definition: avcodec.h:3472
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
uint16_t shift
Number of least significant bits that must be shifted away to get the value.
Definition: pixdesc.h:52
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:100
uint8_t
#define av_cold
Definition: attributes.h:74
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 av_cold void init_static_data(void)
Definition: dsddec.c:82
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1423
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:3013
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
uint16_t depth_minus1
Number of bits in the component minus 1.
Definition: pixdesc.h:57
int width
width and height of the video frame
Definition: frame.h:220
#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:89
av_default_item_name
#define CODEC_J2K
Definition: j2kenc.c:42
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
int capabilities
Codec capabilities.
Definition: avcodec.h:3491
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:3479
#define FFMAX(a, b)
Definition: common.h:79
Libavcodec external API header.
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:920
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:71
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:364
#define FFMIN(a, b)
Definition: common.h:81
float y
static enum AVPixelFormat libopenjpeg_yuv_pix_fmts[]
#define CODEC_JP2
Definition: j2kenc.c:41
#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:232
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
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:553
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
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[]
uint16_t step_minus1
Number of elements between 2 horizontally consecutive pixels minus 1.
Definition: pixdesc.h:40
#define VD
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:182
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:523
uint16_t plane
Which of the 4 planes contains the component.
Definition: pixdesc.h:34
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:1544
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:220
AVCodec ff_libopenjpeg_decoder
#define OFFSET(x)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
This structure stores compressed data.
Definition: avcodec.h:1400
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:857
#define GRAY_PIXEL_FORMATS
static int width