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tiffenc.c
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1 /*
2  * TIFF image encoder
3  * Copyright (c) 2007 Bartlomiej Wolowiec
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  * TIFF image encoder
25  * @author Bartlomiej Wolowiec
26  */
27 
28 #include "config.h"
29 #if CONFIG_ZLIB
30 #include <zlib.h>
31 #endif
32 
33 #include "libavutil/imgutils.h"
34 #include "libavutil/log.h"
35 #include "libavutil/opt.h"
36 #include "libavutil/pixdesc.h"
37 #include "avcodec.h"
38 #include "bytestream.h"
39 #include "internal.h"
40 #include "lzw.h"
41 #include "put_bits.h"
42 #include "rle.h"
43 #include "tiff.h"
44 
45 #define TIFF_MAX_ENTRY 32
46 
47 /** sizes of various TIFF field types (string size = 1)*/
48 static const uint8_t type_sizes2[14] = {
49  0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 4
50 };
51 
52 typedef struct TiffEncoderContext {
53  AVClass *class; ///< for private options
55 
56  int width; ///< picture width
57  int height; ///< picture height
58  unsigned int bpp; ///< bits per pixel
59  int compr; ///< compression level
60  int bpp_tab_size; ///< bpp_tab size
61  enum TiffPhotometric photometric_interpretation; ///< photometric interpretation
62  int strips; ///< number of strips
63  uint32_t *strip_sizes;
64  unsigned int strip_sizes_size;
65  uint32_t *strip_offsets;
66  unsigned int strip_offsets_size;
68  unsigned int yuv_line_size;
69  int rps; ///< row per strip
70  uint8_t entries[TIFF_MAX_ENTRY * 12]; ///< entries in header
71  int num_entries; ///< number of entries
72  uint8_t **buf; ///< actual position in buffer
73  uint8_t *buf_start; ///< pointer to first byte in buffer
74  int buf_size; ///< buffer size
75  uint16_t subsampling[2]; ///< YUV subsampling factors
76  struct LZWEncodeState *lzws; ///< LZW encode state
77  uint32_t dpi; ///< image resolution in DPI
79 
80 /**
81  * Check free space in buffer.
82  *
83  * @param s Tiff context
84  * @param need Needed bytes
85  * @return 0 - ok, 1 - no free space
86  */
87 static inline int check_size(TiffEncoderContext *s, uint64_t need)
88 {
89  if (s->buf_size < *s->buf - s->buf_start + need) {
90  *s->buf = s->buf_start + s->buf_size + 1;
91  av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
92  return 1;
93  }
94  return 0;
95 }
96 
97 /**
98  * Put n values to buffer.
99  *
100  * @param p pointer to pointer to output buffer
101  * @param n number of values
102  * @param val pointer to values
103  * @param type type of values
104  * @param flip = 0 - normal copy, >0 - flip
105  */
106 static void tnput(uint8_t **p, int n, const uint8_t *val, enum TiffTypes type,
107  int flip)
108 {
109  int i;
110 #if HAVE_BIGENDIAN
111  flip ^= ((int[]) { 0, 0, 0, 1, 3, 3 })[type];
112 #endif
113  for (i = 0; i < n * type_sizes2[type]; i++)
114  *(*p)++ = val[i ^ flip];
115 }
116 
117 /**
118  * Add entry to directory in tiff header.
119  *
120  * @param s Tiff context
121  * @param tag tag that identifies the entry
122  * @param type entry type
123  * @param count the number of values
124  * @param ptr_val pointer to values
125  */
127  enum TiffTypes type, int count, const void *ptr_val)
128 {
129  uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
130 
132 
133  bytestream_put_le16(&entries_ptr, tag);
134  bytestream_put_le16(&entries_ptr, type);
135  bytestream_put_le32(&entries_ptr, count);
136 
137  if (type_sizes[type] * (int64_t)count <= 4) {
138  tnput(&entries_ptr, count, ptr_val, type, 0);
139  } else {
140  bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
141  if (check_size(s, count * (int64_t)type_sizes2[type]))
142  return AVERROR_INVALIDDATA;
143  tnput(s->buf, count, ptr_val, type, 0);
144  }
145 
146  s->num_entries++;
147  return 0;
148 }
149 
151  enum TiffTags tag, enum TiffTypes type, int val)
152 {
153  uint16_t w = val;
154  uint32_t dw = val;
155  return add_entry(s, tag, type, 1,
156  type == TIFF_SHORT ? (void *)&w : (void *)&dw);
157 }
158 
159 /**
160  * Encode one strip in tiff file.
161  *
162  * @param s Tiff context
163  * @param src input buffer
164  * @param dst output buffer
165  * @param n size of input buffer
166  * @param compr compression method
167  * @return number of output bytes. If an output error is encountered, a negative
168  * value corresponding to an AVERROR error code is returned.
169  */
170 static int encode_strip(TiffEncoderContext *s, const int8_t *src,
171  uint8_t *dst, int n, int compr)
172 {
173  switch (compr) {
174 #if CONFIG_ZLIB
175  case TIFF_DEFLATE:
176  case TIFF_ADOBE_DEFLATE:
177  {
178  unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
179  if (compress(dst, &zlen, src, n) != Z_OK) {
180  av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
181  return AVERROR_EXTERNAL;
182  }
183  return zlen;
184  }
185 #endif
186  case TIFF_RAW:
187  if (check_size(s, n))
188  return AVERROR(EINVAL);
189  memcpy(dst, src, n);
190  return n;
191  case TIFF_PACKBITS:
192  return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start),
193  src, 1, n, 2, 0xff, -1, 0);
194  case TIFF_LZW:
195  return ff_lzw_encode(s->lzws, src, n);
196  default:
197  av_log(s->avctx, AV_LOG_ERROR, "Unsupported compression method: %d\n",
198  compr);
199  return AVERROR(EINVAL);
200  }
201 }
202 
203 static void pack_yuv(TiffEncoderContext *s, const AVFrame *p,
204  uint8_t *dst, int lnum)
205 {
206  int i, j, k;
207  int w = (s->width - 1) / s->subsampling[0] + 1;
208  uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
209  uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
210  if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
211  for (i = 0; i < w; i++) {
212  for (j = 0; j < s->subsampling[1]; j++)
213  for (k = 0; k < s->subsampling[0]; k++)
214  *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
215  FFMIN(i * s->subsampling[0] + k, s->width-1)];
216  *dst++ = *pu++;
217  *dst++ = *pv++;
218  }
219  }else{
220  for (i = 0; i < w; i++) {
221  for (j = 0; j < s->subsampling[1]; j++)
222  for (k = 0; k < s->subsampling[0]; k++)
223  *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
224  i * s->subsampling[0] + k];
225  *dst++ = *pu++;
226  *dst++ = *pv++;
227  }
228  }
229 }
230 
231 #define ADD_ENTRY(s, tag, type, count, ptr_val) \
232  do { \
233  ret = add_entry(s, tag, type, count, ptr_val); \
234  if (ret < 0) \
235  goto fail; \
236  } while (0)
237 
238 #define ADD_ENTRY1(s, tag, type, val) \
239  do { \
240  ret = add_entry1(s, tag, type, val); \
241  if (ret < 0) \
242  goto fail; \
243  } while (0)
244 
246  const AVFrame *pict, int *got_packet)
247 {
249  TiffEncoderContext *s = avctx->priv_data;
250  const AVFrame *const p = pict;
251  int i;
252  uint8_t *ptr;
253  uint8_t *offset;
254  uint32_t strips;
255  int bytes_per_row;
256  uint32_t res[2] = { s->dpi, 1 }; // image resolution (72/1)
257  uint16_t bpp_tab[4];
258  int ret = 0;
259  int is_yuv = 0, alpha = 0;
260  int shift_h, shift_v;
261  int packet_size;
262 
263  s->width = avctx->width;
264  s->height = avctx->height;
265  s->subsampling[0] = 1;
266  s->subsampling[1] = 1;
267 
268  if (!desc)
269  return AVERROR(EINVAL);
270 
271  avctx->bits_per_coded_sample =
272  s->bpp = av_get_bits_per_pixel(desc);
273  s->bpp_tab_size = desc->nb_components;
274 
275  switch (avctx->pix_fmt) {
276  case AV_PIX_FMT_RGBA64LE:
277  case AV_PIX_FMT_RGBA:
278  alpha = 1;
279  case AV_PIX_FMT_RGB48LE:
280  case AV_PIX_FMT_RGB24:
282  break;
283  case AV_PIX_FMT_GRAY8:
284  avctx->bits_per_coded_sample = 0x28;
285  case AV_PIX_FMT_GRAY8A:
286  case AV_PIX_FMT_YA16LE:
287  alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A || avctx->pix_fmt == AV_PIX_FMT_YA16LE;
288  case AV_PIX_FMT_GRAY16LE:
291  break;
292  case AV_PIX_FMT_PAL8:
294  break;
297  break;
298  case AV_PIX_FMT_YUV420P:
299  case AV_PIX_FMT_YUV422P:
300  case AV_PIX_FMT_YUV440P:
301  case AV_PIX_FMT_YUV444P:
302  case AV_PIX_FMT_YUV410P:
303  case AV_PIX_FMT_YUV411P:
304  av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v);
306  s->subsampling[0] = 1 << shift_h;
307  s->subsampling[1] = 1 << shift_v;
308  is_yuv = 1;
309  break;
310  default:
312  "This colors format is not supported\n");
313  return AVERROR(EINVAL);
314  }
315 
316  for (i = 0; i < s->bpp_tab_size; i++)
317  bpp_tab[i] = desc->comp[i].depth;
318 
319  if (s->compr == TIFF_DEFLATE ||
320  s->compr == TIFF_ADOBE_DEFLATE ||
321  s->compr == TIFF_LZW)
322  // best choice for DEFLATE
323  s->rps = s->height;
324  else
325  // suggest size of strip
326  s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1);
327  // round rps up
328  s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1];
329 
330  strips = (s->height - 1) / s->rps + 1;
331 
332  bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
333  s->subsampling[0] * s->subsampling[1] + 7) >> 3;
334  packet_size = avctx->height * bytes_per_row * 2 +
335  avctx->height * 4 + AV_INPUT_BUFFER_MIN_SIZE;
336 
337  if ((ret = ff_alloc_packet2(avctx, pkt, packet_size, 0)) < 0)
338  return ret;
339  ptr = pkt->data;
340  s->buf_start = pkt->data;
341  s->buf = &ptr;
342  s->buf_size = pkt->size;
343 
344  if (check_size(s, 8)) {
345  ret = AVERROR(EINVAL);
346  goto fail;
347  }
348 
349  // write header
350  bytestream_put_le16(&ptr, 0x4949);
351  bytestream_put_le16(&ptr, 42);
352 
353  offset = ptr;
354  bytestream_put_le32(&ptr, 0);
355 
356  if (strips > INT_MAX / FFMAX(sizeof(s->strip_sizes[0]), sizeof(s->strip_offsets[0]))) {
357  ret = AVERROR(ENOMEM);
358  goto fail;
359  }
360  av_fast_padded_mallocz(&s->strip_sizes , &s->strip_sizes_size , sizeof(s->strip_sizes [0]) * strips);
361  av_fast_padded_mallocz(&s->strip_offsets, &s->strip_offsets_size, sizeof(s->strip_offsets[0]) * strips);
362 
363  if (!s->strip_sizes || !s->strip_offsets) {
364  ret = AVERROR(ENOMEM);
365  goto fail;
366  }
367 
368  if (is_yuv) {
369  av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
370  if (s->yuv_line == NULL) {
371  av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
372  ret = AVERROR(ENOMEM);
373  goto fail;
374  }
375  }
376 
377 #if CONFIG_ZLIB
378  if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
379  uint8_t *zbuf;
380  int zlen, zn;
381  int j;
382 
383  zlen = bytes_per_row * s->rps;
384  zbuf = av_malloc(zlen);
385  if (!zbuf) {
386  ret = AVERROR(ENOMEM);
387  goto fail;
388  }
389  s->strip_offsets[0] = ptr - pkt->data;
390  zn = 0;
391  for (j = 0; j < s->rps; j++) {
392  if (is_yuv) {
393  pack_yuv(s, p, s->yuv_line, j);
394  memcpy(zbuf + zn, s->yuv_line, bytes_per_row);
395  j += s->subsampling[1] - 1;
396  } else
397  memcpy(zbuf + j * bytes_per_row,
398  p->data[0] + j * p->linesize[0], bytes_per_row);
399  zn += bytes_per_row;
400  }
401  ret = encode_strip(s, zbuf, ptr, zn, s->compr);
402  av_free(zbuf);
403  if (ret < 0) {
404  av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
405  goto fail;
406  }
407  ptr += ret;
408  s->strip_sizes[0] = ptr - pkt->data - s->strip_offsets[0];
409  } else
410 #endif
411  {
412  if (s->compr == TIFF_LZW) {
414  if (!s->lzws) {
415  ret = AVERROR(ENOMEM);
416  goto fail;
417  }
418  }
419  for (i = 0; i < s->height; i++) {
420  if (s->strip_sizes[i / s->rps] == 0) {
421  if (s->compr == TIFF_LZW) {
422  ff_lzw_encode_init(s->lzws, ptr,
423  s->buf_size - (*s->buf - s->buf_start),
424  12, FF_LZW_TIFF, put_bits);
425  }
426  s->strip_offsets[i / s->rps] = ptr - pkt->data;
427  }
428  if (is_yuv) {
429  pack_yuv(s, p, s->yuv_line, i);
430  ret = encode_strip(s, s->yuv_line, ptr, bytes_per_row, s->compr);
431  i += s->subsampling[1] - 1;
432  } else
433  ret = encode_strip(s, p->data[0] + i * p->linesize[0],
434  ptr, bytes_per_row, s->compr);
435  if (ret < 0) {
436  av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
437  goto fail;
438  }
439  s->strip_sizes[i / s->rps] += ret;
440  ptr += ret;
441  if (s->compr == TIFF_LZW &&
442  (i == s->height - 1 || i % s->rps == s->rps - 1)) {
444  s->strip_sizes[(i / s->rps)] += ret;
445  ptr += ret;
446  }
447  }
448  if (s->compr == TIFF_LZW)
449  av_freep(&s->lzws);
450  }
451 
452  s->num_entries = 0;
453 
457 
458  if (s->bpp_tab_size)
459  ADD_ENTRY(s, TIFF_BPP, TIFF_SHORT, s->bpp_tab_size, bpp_tab);
460 
464 
465  if (s->bpp_tab_size)
467 
470  ADD_ENTRY(s, TIFF_XRES, TIFF_RATIONAL, 1, res);
471  if (avctx->sample_aspect_ratio.num > 0 &&
472  avctx->sample_aspect_ratio.den > 0) {
473  AVRational y = av_mul_q(av_make_q(s->dpi, 1),
474  avctx->sample_aspect_ratio);
475  res[0] = y.num;
476  res[1] = y.den;
477  }
478  ADD_ENTRY(s, TIFF_YRES, TIFF_RATIONAL, 1, res);
480 
481  if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT))
483  strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
484 
485  if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
486  uint16_t pal[256 * 3];
487  for (i = 0; i < 256; i++) {
488  uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
489  pal[i] = ((rgb >> 16) & 0xff) * 257;
490  pal[i + 256] = ((rgb >> 8) & 0xff) * 257;
491  pal[i + 512] = (rgb & 0xff) * 257;
492  }
493  ADD_ENTRY(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal);
494  }
495  if (alpha)
497  if (is_yuv) {
498  /** according to CCIR Recommendation 601.1 */
499  uint32_t refbw[12] = { 15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1 };
504  }
505  // write offset to dir
506  bytestream_put_le32(&offset, ptr - pkt->data);
507 
508  if (check_size(s, 6 + s->num_entries * 12)) {
509  ret = AVERROR(EINVAL);
510  goto fail;
511  }
512  bytestream_put_le16(&ptr, s->num_entries); // write tag count
513  bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
514  bytestream_put_le32(&ptr, 0);
515 
516  pkt->size = ptr - pkt->data;
517  pkt->flags |= AV_PKT_FLAG_KEY;
518  *got_packet = 1;
519 
520 fail:
521  return ret < 0 ? ret : 0;
522 }
523 
525 {
526  TiffEncoderContext *s = avctx->priv_data;
527 
528 #if !CONFIG_ZLIB
529  if (s->compr == TIFF_DEFLATE) {
530  av_log(avctx, AV_LOG_ERROR,
531  "Deflate compression needs zlib compiled in\n");
532  return AVERROR(ENOSYS);
533  }
534 #endif
535 
536 #if FF_API_CODED_FRAME
539  avctx->coded_frame->key_frame = 1;
541 #endif
542  s->avctx = avctx;
543 
544  return 0;
545 }
546 
548 {
549  TiffEncoderContext *s = avctx->priv_data;
550 
551  av_freep(&s->strip_sizes);
552  av_freep(&s->strip_offsets);
553  av_freep(&s->yuv_line);
554 
555  return 0;
556 }
557 
558 #define OFFSET(x) offsetof(TiffEncoderContext, x)
559 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
560 static const AVOption options[] = {
561  {"dpi", "set the image resolution (in dpi)", OFFSET(dpi), AV_OPT_TYPE_INT, {.i64 = 72}, 1, 0x10000, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},
562  { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, { .i64 = TIFF_PACKBITS }, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" },
563  { "packbits", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_PACKBITS }, 0, 0, VE, "compression_algo" },
564  { "raw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_RAW }, 0, 0, VE, "compression_algo" },
565  { "lzw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_LZW }, 0, 0, VE, "compression_algo" },
566  { "deflate", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE }, 0, 0, VE, "compression_algo" },
567  { NULL },
568 };
569 
570 static const AVClass tiffenc_class = {
571  .class_name = "TIFF encoder",
572  .item_name = av_default_item_name,
573  .option = options,
574  .version = LIBAVUTIL_VERSION_INT,
575 };
576 
578  .name = "tiff",
579  .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
580  .type = AVMEDIA_TYPE_VIDEO,
581  .id = AV_CODEC_ID_TIFF,
582  .priv_data_size = sizeof(TiffEncoderContext),
583  .init = encode_init,
584  .close = encode_close,
586  .encode2 = encode_frame,
587  .pix_fmts = (const enum AVPixelFormat[]) {
595  },
596  .priv_class = &tiffenc_class,
597 };
Definition: tiff.h:54
static av_cold int encode_init(AVCodecContext *avctx)
Definition: tiffenc.c:524
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
Definition: tiff.h:89
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int num_entries
number of entries
Definition: tiffenc.c:71
static av_cold int encode_close(AVCodecContext *avctx)
Definition: tiffenc.c:547
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2332
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
TiffPhotometric
Definition: tiff.h:150
unsigned int bpp
bits per pixel
Definition: tiffenc.c:58
AVOption.
Definition: opt.h:246
static int check_size(TiffEncoderContext *s, uint64_t need)
Check free space in buffer.
Definition: tiffenc.c:87
Definition: tiff.h:53
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:206
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
int strips
number of strips
Definition: tiffenc.c:62
const char * desc
Definition: nvenc.c:60
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2284
unsigned int strip_offsets_size
Definition: tiffenc.c:66
AVCodec ff_tiff_encoder
Definition: tiffenc.c:577
TIFF tables.
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1602
int ff_lzw_encode(struct LZWEncodeState *s, const uint8_t *inbuf, int insize)
LZW main compress function.
Definition: lzwenc.c:227
uint8_t ** buf
actual position in buffer
Definition: tiffenc.c:72
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:2087
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1904
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
Definition: utils.c:120
int height
picture height
Definition: tiffenc.c:57
static AVPacket pkt
uint8_t * yuv_line
Definition: tiffenc.c:67
int compr
compression level
Definition: tiffenc.c:59
static int add_entry1(TiffEncoderContext *s, enum TiffTags tag, enum TiffTypes type, int val)
Definition: tiffenc.c:150
#define src
Definition: vp8dsp.c:254
AVCodec.
Definition: avcodec.h:3601
struct LZWEncodeState * lzws
LZW encode state.
Definition: tiffenc.c:76
Definition: tiff.h:93
uint8_t * buf_start
pointer to first byte in buffer
Definition: tiffenc.c:73
#define AV_CODEC_CAP_INTRA_ONLY
Codec is intra only.
Definition: avcodec.h:1052
#define OFFSET(x)
Definition: tiffenc.c:558
static const uint8_t type_sizes[14]
sizes of various TIFF field types (string size = 100)
Definition: tiff_common.h:54
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
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define ADD_ENTRY1(s, tag, type, val)
Definition: tiffenc.c:238
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:73
AVOptions.
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:111
static const uint8_t type_sizes2[14]
sizes of various TIFF field types (string size = 1)
Definition: tiffenc.c:48
uint8_t * data
Definition: avcodec.h:1601
LZW encode state.
Definition: lzwenc.c:50
uint32_t tag
Definition: movenc.c:1412
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:3071
uint32_t * strip_sizes
Definition: tiffenc.c:63
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:741
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:2420
#define av_log(a,...)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:276
Definition: tiff.h:68
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1633
#define VE
Definition: tiffenc.c:559
int ff_lzw_encode_flush(struct LZWEncodeState *s, void(*lzw_flush_put_bits)(struct PutBitContext *))
#define ADD_ENTRY(s, tag, type, count, ptr_val)
Definition: tiffenc.c:231
int buf_size
buffer size
Definition: tiffenc.c:74
unsigned int strip_sizes_size
Definition: tiffenc.c:64
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:99
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_default_item_name
static void flip(AVCodecContext *avctx, AVFrame *frame)
Definition: rawdec.c:134
#define AVERROR(e)
Definition: error.h:43
#define pv
Definition: regdef.h:60
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2360
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1771
const char * name
Name of the codec implementation.
Definition: avcodec.h:3608
uint32_t * strip_offsets
Definition: tiffenc.c:65
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:84
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1022
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1607
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
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:258
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:886
alias for AV_PIX_FMT_YA8
Definition: pixfmt.h:157
#define FFMIN(a, b)
Definition: common.h:96
int width
picture width / height.
Definition: avcodec.h:1863
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
Definition: pixfmt.h:497
TiffTypes
data type identifiers for TIFF tags
Definition: tiff_common.h:37
int n
Definition: avisynth_c.h:684
int width
picture width
Definition: tiffenc.c:56
Definition: tiff.h:41
static int add_entry(TiffEncoderContext *s, enum TiffTags tag, enum TiffTypes type, int count, const void *ptr_val)
Add entry to directory in tiff header.
Definition: tiffenc.c:126
Libavcodec external API header.
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: tiffenc.c:245
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:282
main external API structure.
Definition: avcodec.h:1676
static const AVClass tiffenc_class
Definition: tiffenc.c:570
GLint GLenum type
Definition: opengl_enc.c:105
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
Describe the class of an AVClass context structure.
Definition: log.h:67
Rational number (pair of numerator and denominator).
Definition: rational.h:58
#define TIFF_MAX_ENTRY
Definition: tiffenc.c:45
static void tnput(uint8_t **p, int n, const uint8_t *val, enum TiffTypes type, int flip)
Put n values to buffer.
Definition: tiffenc.c:106
uint16_t subsampling[2]
YUV subsampling factors.
Definition: tiffenc.c:75
uint8_t entries[TIFF_MAX_ENTRY *12]
entries in header
Definition: tiffenc.c:70
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1722
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
LZW decoding routines.
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:72
static void pack_yuv(TiffEncoderContext *s, const AVFrame *p, uint8_t *dst, int lnum)
Definition: tiffenc.c:203
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
void ff_lzw_encode_init(struct LZWEncodeState *s, uint8_t *outbuf, int outsize, int maxbits, enum FF_LZW_MODES mode, void(*lzw_put_bits)(struct PutBitContext *, int, unsigned int))
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:101
if(ret< 0)
Definition: vf_mcdeint.c:282
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:71
int bpp_tab_size
bpp_tab size
Definition: tiffenc.c:60
void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_padded_malloc except that buffer will always be 0-initialized after call...
Definition: utils.c:132
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3099
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
int den
Denominator.
Definition: rational.h:60
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:368
void * priv_data
Definition: avcodec.h:1718
#define av_free(p)
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
static const AVOption options[]
Definition: tiffenc.c:560
Y , 16bpp, little-endian.
Definition: pixfmt.h:99
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
16 bits gray, 16 bits alpha (little-endian)
Definition: pixfmt.h:227
#define LIBAVCODEC_IDENT
Definition: version.h:42
AVCodecContext * avctx
Definition: tiffenc.c:54
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
enum TiffPhotometric photometric_interpretation
photometric interpretation
Definition: tiffenc.c:61
int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *ptr, int bpp, int w, int add_rep, int xor_rep, int add_raw, int xor_raw)
RLE compress the row, with maximum size of out_size.
Definition: rle.c:52
uint32_t dpi
image resolution in DPI
Definition: tiffenc.c:77
const int ff_lzw_encode_state_size
Definition: lzwenc.c:67
int rps
row per strip
Definition: tiffenc.c:69
int depth
Number of bits in the component.
Definition: pixdesc.h:58
unsigned int yuv_line_size
Definition: tiffenc.c:68
#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:1578
TiffTags
abridged list of TIFF tags
Definition: tiff.h:37
static int encode_strip(TiffEncoderContext *s, const int8_t *src, uint8_t *dst, int n, int compr)
Encode one strip in tiff file.
Definition: tiffenc.c:170
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:218
bitstream writer API