Libav
tiffenc.c
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1 /*
2  * TIFF image encoder
3  * Copyright (c) 2007 Bartlomiej Wolowiec
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
28 #include "config.h"
29 #if CONFIG_ZLIB
30 #include <zlib.h>
31 #endif
32 
33 #include "libavutil/log.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36 #include "avcodec.h"
37 #include "bytestream.h"
38 #include "lzw.h"
39 #include "put_bits.h"
40 #include "rle.h"
41 #include "tiff.h"
42 
43 #define TIFF_MAX_ENTRY 32
44 
46 static const uint8_t type_sizes2[6] = {
47  0, 1, 1, 2, 4, 8
48 };
49 
50 typedef struct TiffEncoderContext {
51  AVClass *class;
53 
54  int width;
55  int height;
56  unsigned int bpp;
57  int compr;
60  int strips;
61  int rps;
66  int buf_size;
67  uint16_t subsampling[2];
68  struct LZWEncodeState *lzws;
70 
77 static inline int check_size(TiffEncoderContext *s, uint64_t need)
78 {
79  if (s->buf_size < *s->buf - s->buf_start + need) {
80  *s->buf = s->buf_start + s->buf_size + 1;
81  av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
82  return 1;
83  }
84  return 0;
85 }
86 
96 static void tnput(uint8_t **p, int n, const uint8_t *val, enum TiffTypes type,
97  int flip)
98 {
99  int i;
100 #if HAVE_BIGENDIAN
101  flip ^= ((int[]) { 0, 0, 0, 1, 3, 3 })[type];
102 #endif
103  for (i = 0; i < n * type_sizes2[type]; i++)
104  *(*p)++ = val[i ^ flip];
105 }
106 
116  enum TiffTypes type, int count, const void *ptr_val)
117 {
118  uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
119 
120  assert(s->num_entries < TIFF_MAX_ENTRY);
121 
122  bytestream_put_le16(&entries_ptr, tag);
123  bytestream_put_le16(&entries_ptr, type);
124  bytestream_put_le32(&entries_ptr, count);
125 
126  if (type_sizes[type] * count <= 4) {
127  tnput(&entries_ptr, count, ptr_val, type, 0);
128  } else {
129  bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
130  if (check_size(s, count * type_sizes2[type]))
131  return AVERROR_INVALIDDATA;
132  tnput(s->buf, count, ptr_val, type, 0);
133  }
134 
135  s->num_entries++;
136  return 0;
137 }
138 
140  enum TiffTags tag, enum TiffTypes type, int val)
141 {
142  uint16_t w = val;
143  uint32_t dw = val;
144  return add_entry(s, tag, type, 1,
145  type == TIFF_SHORT ? (void *)&w : (void *)&dw);
146 }
147 
159 static int encode_strip(TiffEncoderContext *s, const int8_t *src,
160  uint8_t *dst, int n, int compr)
161 {
162  switch (compr) {
163 #if CONFIG_ZLIB
164  case TIFF_DEFLATE:
165  case TIFF_ADOBE_DEFLATE:
166  {
167  unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
168  if (compress(dst, &zlen, src, n) != Z_OK) {
169  av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
170  return AVERROR_UNKNOWN;
171  }
172  return zlen;
173  }
174 #endif
175  case TIFF_RAW:
176  if (check_size(s, n))
177  return AVERROR(EINVAL);
178  memcpy(dst, src, n);
179  return n;
180  case TIFF_PACKBITS:
181  return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start),
182  src, 1, n, 2, 0xff, -1, 0);
183  case TIFF_LZW:
184  return ff_lzw_encode(s->lzws, src, n);
185  default:
186  return AVERROR(EINVAL);
187  }
188 }
189 
190 static void pack_yuv(TiffEncoderContext *s, const AVFrame *p,
191  uint8_t *dst, int lnum)
192 {
193  int i, j, k;
194  int w = (s->width - 1) / s->subsampling[0] + 1;
195  uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
196  uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
197  for (i = 0; i < w; i++) {
198  for (j = 0; j < s->subsampling[1]; j++)
199  for (k = 0; k < s->subsampling[0]; k++)
200  *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
201  i * s->subsampling[0] + k];
202  *dst++ = *pu++;
203  *dst++ = *pv++;
204  }
205 }
206 
207 #define ADD_ENTRY(s, tag, type, count, ptr_val) \
208  do { \
209  ret = add_entry(s, tag, type, count, ptr_val); \
210  if (ret < 0) \
211  goto fail; \
212  } while(0);
213 
214 #define ADD_ENTRY1(s, tag, type, val) \
215  do { \
216  ret = add_entry1(s, tag, type, val); \
217  if (ret < 0) \
218  goto fail; \
219  } while(0);
220 
222  const AVFrame *pict, int *got_packet)
223 {
224  TiffEncoderContext *s = avctx->priv_data;
225  const AVFrame *const p = pict;
226  int i;
227  uint8_t *ptr;
228  uint8_t *offset;
229  uint32_t strips;
230  uint32_t *strip_sizes = NULL;
231  uint32_t *strip_offsets = NULL;
232  int bytes_per_row;
233  uint32_t res[2] = { 72, 1 }; // image resolution (72/1)
234  uint16_t bpp_tab[] = { 8, 8, 8, 8 };
235  int ret = 0;
236  int is_yuv = 0;
237  uint8_t *yuv_line = NULL;
238  int shift_h, shift_v;
239  int packet_size;
240  const AVPixFmtDescriptor *pfd;
241 
242  s->avctx = avctx;
243 
244  s->width = avctx->width;
245  s->height = avctx->height;
246  s->subsampling[0] = 1;
247  s->subsampling[1] = 1;
248 
249  switch (avctx->pix_fmt) {
250  case AV_PIX_FMT_RGBA64LE:
251  case AV_PIX_FMT_RGB48LE:
252  case AV_PIX_FMT_GRAY16LE:
253  case AV_PIX_FMT_RGBA:
254  case AV_PIX_FMT_RGB24:
255  case AV_PIX_FMT_GRAY8:
256  case AV_PIX_FMT_PAL8:
257  pfd = av_pix_fmt_desc_get(avctx->pix_fmt);
258  if (!pfd)
259  return AVERROR_BUG;
260  s->bpp = av_get_bits_per_pixel(pfd);
261  if (pfd->flags & AV_PIX_FMT_FLAG_PAL)
263  else if (pfd->flags & AV_PIX_FMT_FLAG_RGB)
265  else
267  s->bpp_tab_size = pfd->nb_components;
268  for (i = 0; i < s->bpp_tab_size; i++)
269  bpp_tab[i] = s->bpp / s->bpp_tab_size;
270  break;
272  s->bpp = 1;
274  s->bpp_tab_size = 0;
275  break;
277  s->bpp = 1;
279  s->bpp_tab_size = 0;
280  break;
281  case AV_PIX_FMT_YUV420P:
282  case AV_PIX_FMT_YUV422P:
283  case AV_PIX_FMT_YUV444P:
284  case AV_PIX_FMT_YUV410P:
285  case AV_PIX_FMT_YUV411P:
286  av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v);
288  s->bpp = 8 + (16 >> (shift_h + shift_v));
289  s->subsampling[0] = 1 << shift_h;
290  s->subsampling[1] = 1 << shift_v;
291  s->bpp_tab_size = 3;
292  is_yuv = 1;
293  break;
294  default:
296  "This colors format is not supported\n");
297  return AVERROR(EINVAL);
298  }
299 
300  if (s->compr == TIFF_DEFLATE ||
301  s->compr == TIFF_ADOBE_DEFLATE ||
302  s->compr == TIFF_LZW)
303  // best choice for DEFLATE
304  s->rps = s->height;
305  else
306  // suggest size of strip
307  s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1);
308  // round rps up
309  s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1];
310 
311  strips = (s->height - 1) / s->rps + 1;
312 
313  packet_size = avctx->height * ((avctx->width * s->bpp + 7) >> 3) * 2 +
314  avctx->height * 4 + AV_INPUT_BUFFER_MIN_SIZE;
315 
316  if (!pkt->data &&
317  (ret = av_new_packet(pkt, packet_size)) < 0) {
318  av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
319  return ret;
320  }
321  ptr = pkt->data;
322  s->buf_start = pkt->data;
323  s->buf = &ptr;
324  s->buf_size = pkt->size;
325 
326  if (check_size(s, 8)) {
327  ret = AVERROR(EINVAL);
328  goto fail;
329  }
330 
331  // write header
332  bytestream_put_le16(&ptr, 0x4949);
333  bytestream_put_le16(&ptr, 42);
334 
335  offset = ptr;
336  bytestream_put_le32(&ptr, 0);
337 
338  strip_sizes = av_mallocz_array(strips, sizeof(*strip_sizes));
339  strip_offsets = av_mallocz_array(strips, sizeof(*strip_offsets));
340  if (!strip_sizes || !strip_offsets) {
341  ret = AVERROR(ENOMEM);
342  goto fail;
343  }
344 
345  bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
346  s->subsampling[0] * s->subsampling[1] + 7) >> 3;
347  if (is_yuv) {
348  yuv_line = av_malloc(bytes_per_row);
349  if (!yuv_line) {
350  av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
351  ret = AVERROR(ENOMEM);
352  goto fail;
353  }
354  }
355 
356 #if CONFIG_ZLIB
357  if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
358  uint8_t *zbuf;
359  int zlen, zn;
360  int j;
361 
362  zlen = bytes_per_row * s->rps;
363  zbuf = av_malloc(zlen);
364  if (!zbuf) {
365  ret = AVERROR(ENOMEM);
366  goto fail;
367  }
368  strip_offsets[0] = ptr - pkt->data;
369  zn = 0;
370  for (j = 0; j < s->rps; j++) {
371  if (is_yuv) {
372  pack_yuv(s, p, yuv_line, j);
373  memcpy(zbuf + zn, yuv_line, bytes_per_row);
374  j += s->subsampling[1] - 1;
375  } else
376  memcpy(zbuf + j * bytes_per_row,
377  p->data[0] + j * p->linesize[0], bytes_per_row);
378  zn += bytes_per_row;
379  }
380  ret = encode_strip(s, zbuf, ptr, zn, s->compr);
381  av_free(zbuf);
382  if (ret < 0) {
383  av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
384  goto fail;
385  }
386  ptr += ret;
387  strip_sizes[0] = ptr - pkt->data - strip_offsets[0];
388  } else
389 #endif
390  if (s->compr == TIFF_LZW) {
392  if (!s->lzws) {
393  ret = AVERROR(ENOMEM);
394  goto fail;
395  }
396  }
397  for (i = 0; i < s->height; i++) {
398  if (strip_sizes[i / s->rps] == 0) {
399  if (s->compr == TIFF_LZW) {
400  ff_lzw_encode_init(s->lzws, ptr,
401  s->buf_size - (*s->buf - s->buf_start),
402  12, FF_LZW_TIFF, put_bits);
403  }
404  strip_offsets[i / s->rps] = ptr - pkt->data;
405  }
406  if (is_yuv) {
407  pack_yuv(s, p, yuv_line, i);
408  ret = encode_strip(s, yuv_line, ptr, bytes_per_row, s->compr);
409  i += s->subsampling[1] - 1;
410  } else
411  ret = encode_strip(s, p->data[0] + i * p->linesize[0],
412  ptr, bytes_per_row, s->compr);
413  if (ret < 0) {
414  av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
415  goto fail;
416  }
417  strip_sizes[i / s->rps] += ret;
418  ptr += ret;
419  if (s->compr == TIFF_LZW &&
420  (i == s->height - 1 || i % s->rps == s->rps - 1)) {
422  strip_sizes[(i / s->rps)] += ret;
423  ptr += ret;
424  }
425  }
426  if (s->compr == TIFF_LZW)
427  av_free(s->lzws);
428 
429  s->num_entries = 0;
430 
434 
435  if (s->bpp_tab_size)
436  ADD_ENTRY(s, TIFF_BPP, TIFF_SHORT, s->bpp_tab_size, bpp_tab);
437 
440  ADD_ENTRY(s, TIFF_STRIP_OFFS, TIFF_LONG, strips, strip_offsets);
441 
442  if (s->bpp_tab_size)
444 
446  ADD_ENTRY(s, TIFF_STRIP_SIZE, TIFF_LONG, strips, strip_sizes);
447  ADD_ENTRY(s, TIFF_XRES, TIFF_RATIONAL, 1, res);
448  ADD_ENTRY(s, TIFF_YRES, TIFF_RATIONAL, 1, res);
450 
451  if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT))
453  strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
454 
455  if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
456  uint16_t pal[256 * 3];
457  for (i = 0; i < 256; i++) {
458  uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
459  pal[i] = ((rgb >> 16) & 0xff) * 257;
460  pal[i + 256] = ((rgb >> 8) & 0xff) * 257;
461  pal[i + 512] = (rgb & 0xff) * 257;
462  }
463  ADD_ENTRY(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal);
464  }
465  if (is_yuv) {
467  uint32_t refbw[12] = { 15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1 };
470  }
471  // write offset to dir
472  bytestream_put_le32(&offset, ptr - pkt->data);
473 
474  if (check_size(s, 6 + s->num_entries * 12)) {
475  ret = AVERROR(EINVAL);
476  goto fail;
477  }
478  bytestream_put_le16(&ptr, s->num_entries); // write tag count
479  bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
480  bytestream_put_le32(&ptr, 0);
481 
482  pkt->size = ptr - pkt->data;
483  pkt->flags |= AV_PKT_FLAG_KEY;
484  *got_packet = 1;
485 
486 fail:
487  av_free(strip_sizes);
488  av_free(strip_offsets);
489  av_free(yuv_line);
490  return ret;
491 }
492 
494 {
495 #if !CONFIG_ZLIB
496  TiffEncoderContext *s = avctx->priv_data;
497 
498  if (s->compr == TIFF_DEFLATE) {
499  av_log(avctx, AV_LOG_ERROR,
500  "Deflate compression needs zlib compiled in\n");
501  return AVERROR(ENOSYS);
502  }
503 #endif
504 
505 #if FF_API_CODED_FRAME
508  avctx->coded_frame->key_frame = 1;
510 #endif
511 
512  return 0;
513 }
514 
515 #define OFFSET(x) offsetof(TiffEncoderContext, x)
516 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
517 static const AVOption options[] = {
518  { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, { .i64 = TIFF_PACKBITS }, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" },
519  { "packbits", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_PACKBITS }, 0, 0, VE, "compression_algo" },
520  { "raw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_RAW }, 0, 0, VE, "compression_algo" },
521  { "lzw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_LZW }, 0, 0, VE, "compression_algo" },
522  { "deflate", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE }, 0, 0, VE, "compression_algo" },
523  { NULL },
524 };
525 
526 static const AVClass tiffenc_class = {
527  .class_name = "TIFF encoder",
528  .item_name = av_default_item_name,
529  .option = options,
530  .version = LIBAVUTIL_VERSION_INT,
531 };
532 
534  .name = "tiff",
535  .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
536  .type = AVMEDIA_TYPE_VIDEO,
537  .id = AV_CODEC_ID_TIFF,
538  .priv_data_size = sizeof(TiffEncoderContext),
539  .init = encode_init,
540  .encode2 = encode_frame,
541  .pix_fmts = (const enum AVPixelFormat[]) {
549  },
550  .priv_class = &tiffenc_class,
551 };
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:134
Definition: tiff.h:47
static av_cold int encode_init(AVCodecContext *avctx)
Definition: tiffenc.c:493
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:62
Definition: tiff.h:65
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
int num_entries
number of entries
Definition: tiffenc.c:63
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1768
This structure describes decoded (raw) audio or video data.
Definition: frame.h:140
TiffPhotometric
Definition: tiff.h:86
unsigned int bpp
bits per pixel
Definition: tiffenc.c:56
AVOption.
Definition: opt.h:234
static int check_size(TiffEncoderContext *s, uint64_t need)
Check free space in buffer.
Definition: tiffenc.c:77
Definition: tiff.h:46
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:64
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:61
int strips
number of strips
Definition: tiffenc.c:60
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:1740
AVCodec ff_tiff_encoder
Definition: tiffenc.c:533
TIFF tables.
int size
Definition: avcodec.h:1347
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
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:64
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1621
int height
picture height
Definition: tiffenc.c:55
int compr
compression level
Definition: tiffenc.c:57
static int add_entry1(TiffEncoderContext *s, enum TiffTags tag, enum TiffTypes type, int val)
Definition: tiffenc.c:139
AVCodec.
Definition: avcodec.h:3120
struct LZWEncodeState * lzws
LZW encode state.
Definition: tiffenc.c:68
Definition: tiff.h:69
uint8_t * buf_start
pointer to first byte in buffer
Definition: tiffenc.c:65
#define OFFSET(x)
Definition: tiffenc.c:515
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:39
#define ADD_ENTRY1(s, tag, type, val)
Definition: tiffenc.c:214
uint8_t
#define av_cold
Definition: attributes.h:66
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:70
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:107
uint8_t * data
Definition: avcodec.h:1346
LZW encode state.
Definition: lzwenc.c:50
uint32_t tag
Definition: movenc.c:854
static const uint8_t type_sizes[6]
sizes of various TIFF field types (string size = 100)
Definition: tiff.h:105
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:645
Definition: tiff.h:56
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1378
#define VE
Definition: tiffenc.c:516
int ff_lzw_encode_flush(struct LZWEncodeState *s, void(*lzw_flush_put_bits)(struct PutBitContext *))
#define src
Definition: vp8dsp.c:254
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:84
#define ADD_ENTRY(s, tag, type, count, ptr_val)
Definition: tiffenc.c:207
int buf_size
buffer size
Definition: tiffenc.c:66
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:124
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:190
static void flip(AVCodecContext *avctx, AVFrame *frame)
Definition: rawdec.c:134
#define AVERROR(e)
Definition: error.h:43
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:150
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:1793
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:148
static const uint8_t type_sizes2[6]
sizes of various TIFF field types (string size = 1)
Definition: tiffenc.c:46
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1503
const char * name
Name of the codec implementation.
Definition: avcodec.h:3127
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
Definition: put_bits.h:134
#define FFMAX(a, b)
Definition: common.h:64
#define fail()
Definition: checkasm.h:80
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:90
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1352
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:63
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:105
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:82
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:201
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:788
int width
picture width / height.
Definition: avcodec.h:1580
int width
picture width
Definition: tiffenc.c:54
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
if(ac->has_optimized_func)
NULL
Definition: eval.c:55
Definition: tiff.h:38
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:115
Libavcodec external API header.
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: tiffenc.c:221
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:158
av_default_item_name
Definition: dnxhdenc.c:55
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:80
main external API structure.
Definition: avcodec.h:1409
static const AVClass tiffenc_class
Definition: tiffenc.c:526
#define AVERROR_BUG
Bug detected, please report the issue.
Definition: error.h:60
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:65
Describe the class of an AVClass context structure.
Definition: log.h:34
#define TIFF_MAX_ENTRY
Definition: tiffenc.c:43
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:96
uint16_t subsampling[2]
YUV subsampling factors.
Definition: tiffenc.c:67
uint8_t entries[TIFF_MAX_ENTRY *12]
entries in header
Definition: tiffenc.c:62
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:257
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:146
LZW decoding routines.
TiffTypes
Definition: tiff.h:78
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:69
static void pack_yuv(TiffEncoderContext *s, const AVFrame *p, uint8_t *dst, int lnum)
Definition: tiffenc.c:190
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:59
Y , 8bpp.
Definition: pixfmt.h:67
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:77
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:83
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:68
int bpp_tab_size
bpp_tab size
Definition: tiffenc.c:58
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2797
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:66
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:61
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:582
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:365
void * priv_data
Definition: avcodec.h:1451
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:78
static const AVOption options[]
Definition: tiffenc.c:517
Y , 16bpp, little-endian.
Definition: pixfmt.h:95
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:196
#define LIBAVCODEC_IDENT
Definition: version.h:42
AVCodecContext * avctx
Definition: tiffenc.c:52
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:205
enum TiffPhotometric photometric_interpretation
photometric interpretation
Definition: tiffenc.c:59
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
Definition: tiff.h:82
const int ff_lzw_encode_state_size
Definition: lzwenc.c:67
int rps
row per strip
Definition: tiffenc.c:61
AVPixelFormat
Pixel format.
Definition: pixfmt.h:57
This structure stores compressed data.
Definition: avcodec.h:1323
for(j=16;j >0;--j)
TiffTags
abridged list of TIFF tags
Definition: tiff.h:34
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:159
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:197
bitstream writer API