FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/tiffenc.c
Date: 2026-01-16 07:34:38
Exec Total Coverage
Lines: 165 268 61.6%
Functions: 9 9 100.0%
Branches: 79 180 43.9%
Line Branch Exec Source
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/log.h"
34 #include "libavutil/mem.h"
35 #include "libavutil/opt.h"
36 #include "libavutil/pixdesc.h"
37 #include "avcodec.h"
38 #include "bytestream.h"
39 #include "codec_internal.h"
40 #include "encode.h"
41 #include "lzw.h"
42 #include "rle.h"
43 #include "tiff.h"
44 #include "tiff_common.h"
45 #include "version.h"
46
47 #define TIFF_MAX_ENTRY 32
48
49 /** sizes of various TIFF field types (string size = 1)*/
50 static const uint8_t type_sizes2[14] = {
51 0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 4
52 };
53
54 typedef struct TiffEncoderContext {
55 AVClass *class; ///< for private options
56 AVCodecContext *avctx;
57
58 int width; ///< picture width
59 int height; ///< picture height
60 unsigned int bpp; ///< bits per pixel
61 int compr; ///< compression level
62 int bpp_tab_size; ///< bpp_tab size
63 enum TiffPhotometric photometric_interpretation; ///< photometric interpretation
64 int strips; ///< number of strips
65 uint32_t *strip_sizes;
66 unsigned int strip_sizes_size;
67 uint32_t *strip_offsets;
68 unsigned int strip_offsets_size;
69 uint8_t *yuv_line;
70 unsigned int yuv_line_size;
71 int rps; ///< row per strip
72 uint8_t entries[TIFF_MAX_ENTRY * 12]; ///< entries in header
73 int num_entries; ///< number of entries
74 uint8_t **buf; ///< actual position in buffer
75 uint8_t *buf_start; ///< pointer to first byte in buffer
76 int buf_size; ///< buffer size
77 uint16_t subsampling[2]; ///< YUV subsampling factors
78 struct LZWEncodeState *lzws; ///< LZW encode state
79 uint32_t dpi; ///< image resolution in DPI
80 } TiffEncoderContext;
81
82 /**
83 * Check free space in buffer.
84 *
85 * @param s Tiff context
86 * @param need Needed bytes
87 * @return 0 - ok, 1 - no free space
88 */
89 107 static inline int check_size(TiffEncoderContext *s, uint64_t need)
90 {
91
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 107 if (s->buf_size < *s->buf - s->buf_start + need) {
92 ✗ *s->buf = s->buf_start + s->buf_size + 1;
93 ✗ av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
94 ✗ return 1;
95 }
96 107 return 0;
97 }
98
99 /**
100 * Put n values to buffer.
101 *
102 * @param p pointer to pointer to output buffer
103 * @param n number of values
104 * @param val pointer to values
105 * @param type type of values
106 * @param flip = 0 - normal copy, >0 - flip
107 */
108 200 static void tnput(uint8_t **p, int n, const uint8_t *val, enum AVTiffDataType type,
109 int flip)
110 {
111 int i;
112 #if HAVE_BIGENDIAN
113 flip ^= ((int[]) { 0, 0, 0, 1, 3, 3 })[type];
114 #endif
115
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 5548 for (i = 0; i < n * type_sizes2[type]; i++)
116 5348 *(*p)++ = val[i ^ flip];
117 200 }
118
119 /**
120 * Add entry to directory in tiff header.
121 *
122 * @param s Tiff context
123 * @param tag tag that identifies the entry
124 * @param type entry type
125 * @param count the number of values
126 * @param ptr_val pointer to values
127 */
128 200 static int add_entry(TiffEncoderContext *s, enum TiffTags tag,
129 enum AVTiffDataType type, int count, const void *ptr_val)
130 {
131 200 uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
132
133
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 200 av_assert0(s->num_entries < TIFF_MAX_ENTRY);
134
135 200 bytestream_put_le16(&entries_ptr, tag);
136 200 bytestream_put_le16(&entries_ptr, type);
137 200 bytestream_put_le32(&entries_ptr, count);
138
139
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 200 if (type_sizes[type] * (int64_t)count <= 4) {
140 123 tnput(&entries_ptr, count, ptr_val, type, 0);
141 } else {
142 77 bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
143
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 77 if (check_size(s, count * (int64_t)type_sizes2[type]))
144 ✗ return AVERROR_INVALIDDATA;
145 77 tnput(s->buf, count, ptr_val, type, 0);
146 }
147
148 200 s->num_entries++;
149 200 return 0;
150 }
151
152 121 static int add_entry1(TiffEncoderContext *s,
153 enum TiffTags tag, enum AVTiffDataType type, int val)
154 {
155 121 uint16_t w = val;
156 121 uint32_t dw = val;
157
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 121 return add_entry(s, tag, type, 1,
158 type == AV_TIFF_SHORT ? (void *)&w : (void *)&dw);
159 }
160
161 /**
162 * Encode one strip in tiff file.
163 *
164 * @param s Tiff context
165 * @param src input buffer
166 * @param dst output buffer
167 * @param n size of input buffer
168 * @param compr compression method
169 * @return number of output bytes. If an output error is encountered, a negative
170 * value corresponding to an AVERROR error code is returned.
171 */
172 3994 static int encode_strip(TiffEncoderContext *s, const int8_t *src,
173 uint8_t *dst, int n, int compr)
174 {
175
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 3994 switch (compr) {
176 #if CONFIG_ZLIB
177 ✗ case TIFF_DEFLATE:
178 case TIFF_ADOBE_DEFLATE:
179 {
180 ✗ unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
181 ✗ if (compress(dst, &zlen, src, n) != Z_OK) {
182 ✗ av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
183 ✗ return AVERROR_EXTERNAL;
184 }
185 ✗ return zlen;
186 }
187 #endif
188 ✗ case TIFF_RAW:
189 ✗ if (check_size(s, n))
190 ✗ return AVERROR(EINVAL);
191 ✗ memcpy(dst, src, n);
192 ✗ return n;
193 3994 case TIFF_PACKBITS:
194 3994 return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start),
195 src, 1, n, 2, 0xff, -1, 0);
196 ✗ case TIFF_LZW:
197 ✗ return ff_lzw_encode(s->lzws, src, n);
198 ✗ default:
199 ✗ av_log(s->avctx, AV_LOG_ERROR, "Unsupported compression method: %d\n",
200 compr);
201 ✗ return AVERROR(EINVAL);
202 }
203 }
204
205 250 static void pack_yuv(TiffEncoderContext *s, const AVFrame *p,
206 uint8_t *dst, int lnum)
207 {
208 int i, j, k;
209 250 int w = (s->width - 1) / s->subsampling[0] + 1;
210 250 const uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
211 250 const uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
212
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 250 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
213 ✗ for (i = 0; i < w; i++) {
214 ✗ for (j = 0; j < s->subsampling[1]; j++)
215 ✗ for (k = 0; k < s->subsampling[0]; k++)
216 ✗ *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
217 ✗ FFMIN(i * s->subsampling[0] + k, s->width-1)];
218 ✗ *dst++ = *pu++;
219 ✗ *dst++ = *pv++;
220 }
221 }else{
222
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 30250 for (i = 0; i < w; i++) {
223
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224
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 180000 for (k = 0; k < s->subsampling[0]; k++)
225 120000 *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
226 120000 i * s->subsampling[0] + k];
227 30000 *dst++ = *pu++;
228 30000 *dst++ = *pv++;
229 }
230 }
231 250 }
232
233 #define ADD_ENTRY(s, tag, type, count, ptr_val) \
234 do { \
235 ret = add_entry(s, tag, type, count, ptr_val); \
236 if (ret < 0) \
237 goto fail; \
238 } while (0)
239
240 #define ADD_ENTRY1(s, tag, type, val) \
241 do { \
242 ret = add_entry1(s, tag, type, val); \
243 if (ret < 0) \
244 goto fail; \
245 } while (0)
246
247 15 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
248 const AVFrame *pict, int *got_packet)
249 {
250 15 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
251 15 TiffEncoderContext *s = avctx->priv_data;
252 15 const AVFrame *const p = pict;
253 int i;
254 uint8_t *ptr;
255 uint8_t *offset;
256 uint32_t strips;
257 int bytes_per_row;
258 15 uint32_t res[2] = { s->dpi, 1 }; // image resolution (72/1)
259 uint16_t bpp_tab[4];
260 15 int ret = 0;
261 15 int is_yuv = 0, alpha = 0;
262 int shift_h, shift_v;
263 int packet_size;
264
265 15 s->width = avctx->width;
266 15 s->height = avctx->height;
267 15 s->subsampling[0] = 1;
268 15 s->subsampling[1] = 1;
269
270
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 15 if (!desc)
271 ✗ return AVERROR(EINVAL);
272
273 15 avctx->bits_per_coded_sample =
274 15 s->bpp = av_get_bits_per_pixel(desc);
275 15 s->bpp_tab_size = desc->nb_components;
276
277
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 15 switch (avctx->pix_fmt) {
278 ✗ case AV_PIX_FMT_RGBA64LE:
279 case AV_PIX_FMT_RGBA:
280 ✗ alpha = 1;
281 13 case AV_PIX_FMT_RGB48LE:
282 case AV_PIX_FMT_RGB24:
283 13 s->photometric_interpretation = TIFF_PHOTOMETRIC_RGB;
284 13 break;
285 ✗ case AV_PIX_FMT_GRAY8:
286 ✗ avctx->bits_per_coded_sample = 0x28;
287 ✗ case AV_PIX_FMT_GRAY8A:
288 case AV_PIX_FMT_YA16LE:
289 ✗ alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A || avctx->pix_fmt == AV_PIX_FMT_YA16LE;
290 ✗ case AV_PIX_FMT_GRAY16LE:
291 case AV_PIX_FMT_MONOBLACK:
292 ✗ s->photometric_interpretation = TIFF_PHOTOMETRIC_BLACK_IS_ZERO;
293 ✗ break;
294 ✗ case AV_PIX_FMT_PAL8:
295 ✗ s->photometric_interpretation = TIFF_PHOTOMETRIC_PALETTE;
296 ✗ break;
297 ✗ case AV_PIX_FMT_MONOWHITE:
298 ✗ s->photometric_interpretation = TIFF_PHOTOMETRIC_WHITE_IS_ZERO;
299 ✗ break;
300 2 case AV_PIX_FMT_YUV420P:
301 case AV_PIX_FMT_YUV422P:
302 case AV_PIX_FMT_YUV440P:
303 case AV_PIX_FMT_YUV444P:
304 case AV_PIX_FMT_YUV410P:
305 case AV_PIX_FMT_YUV411P:
306 2 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v);
307 2 s->photometric_interpretation = TIFF_PHOTOMETRIC_YCBCR;
308 2 s->subsampling[0] = 1 << shift_h;
309 2 s->subsampling[1] = 1 << shift_v;
310 2 is_yuv = 1;
311 2 break;
312 ✗ default:
313 ✗ av_log(s->avctx, AV_LOG_ERROR,
314 "This colors format is not supported\n");
315 ✗ return AVERROR(EINVAL);
316 }
317
318
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 60 for (i = 0; i < s->bpp_tab_size; i++)
319 45 bpp_tab[i] = desc->comp[i].depth;
320
321
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 15 if (s->compr == TIFF_DEFLATE ||
322
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 15 s->compr == TIFF_ADOBE_DEFLATE ||
323
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 15 s->compr == TIFF_LZW)
324 // best choice for DEFLATE
325 ✗ s->rps = s->height;
326 else
327 // suggest size of strip
328 15 s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1);
329 // round rps up
330 15 s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1];
331
332 15 strips = (s->height - 1) / s->rps + 1;
333
334 15 bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
335 15 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
336 15 packet_size = avctx->height * bytes_per_row * 2 +
337 15 avctx->height * 4 + FF_INPUT_BUFFER_MIN_SIZE;
338
339
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 15 if ((ret = ff_alloc_packet(avctx, pkt, packet_size)) < 0)
340 ✗ return ret;
341 15 ptr = pkt->data;
342 15 s->buf_start = pkt->data;
343 15 s->buf = &ptr;
344 15 s->buf_size = pkt->size;
345
346
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 15 if (check_size(s, 8)) {
347 ✗ ret = AVERROR(EINVAL);
348 ✗ goto fail;
349 }
350
351 // write header
352 15 bytestream_put_le16(&ptr, 0x4949);
353 15 bytestream_put_le16(&ptr, 42);
354
355 15 offset = ptr;
356 15 bytestream_put_le32(&ptr, 0);
357
358
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 15 if (strips > INT_MAX / FFMAX(sizeof(s->strip_sizes[0]), sizeof(s->strip_offsets[0]))) {
359 ✗ ret = AVERROR(ENOMEM);
360 ✗ goto fail;
361 }
362 15 av_fast_padded_mallocz(&s->strip_sizes , &s->strip_sizes_size , sizeof(s->strip_sizes [0]) * strips);
363 15 av_fast_padded_mallocz(&s->strip_offsets, &s->strip_offsets_size, sizeof(s->strip_offsets[0]) * strips);
364
365
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 15 if (!s->strip_sizes || !s->strip_offsets) {
366 ✗ ret = AVERROR(ENOMEM);
367 ✗ goto fail;
368 }
369
370
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 15 if (is_yuv) {
371 2 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
372
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 2 if (s->yuv_line == NULL) {
373 ✗ av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
374 ✗ ret = AVERROR(ENOMEM);
375 ✗ goto fail;
376 }
377 }
378
379 #if CONFIG_ZLIB
380
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 15 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
381 uint8_t *zbuf;
382 int zlen, zn;
383 int j;
384
385 ✗ zlen = bytes_per_row * s->rps;
386 ✗ zbuf = av_malloc(zlen);
387 ✗ if (!zbuf) {
388 ✗ ret = AVERROR(ENOMEM);
389 ✗ goto fail;
390 }
391 ✗ s->strip_offsets[0] = ptr - pkt->data;
392 ✗ zn = 0;
393 ✗ for (j = 0; j < s->rps; j++) {
394 ✗ if (is_yuv) {
395 ✗ pack_yuv(s, p, s->yuv_line, j);
396 ✗ memcpy(zbuf + zn, s->yuv_line, bytes_per_row);
397 ✗ j += s->subsampling[1] - 1;
398 } else
399 ✗ memcpy(zbuf + j * bytes_per_row,
400 ✗ p->data[0] + j * p->linesize[0], bytes_per_row);
401 ✗ zn += bytes_per_row;
402 }
403 ✗ ret = encode_strip(s, zbuf, ptr, zn, s->compr);
404 ✗ av_free(zbuf);
405 ✗ if (ret < 0) {
406 ✗ av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
407 ✗ goto fail;
408 }
409 ✗ ptr += ret;
410 ✗ s->strip_sizes[0] = ptr - pkt->data - s->strip_offsets[0];
411 } else
412 #endif
413 {
414
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 15 if (s->compr == TIFF_LZW) {
415 ✗ s->lzws = av_malloc(ff_lzw_encode_state_size);
416 ✗ if (!s->lzws) {
417 ✗ ret = AVERROR(ENOMEM);
418 ✗ goto fail;
419 }
420 }
421
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 4009 for (i = 0; i < s->height; i++) {
422
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 3994 if (s->strip_sizes[i / s->rps] == 0) {
423
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 569 if (s->compr == TIFF_LZW) {
424 ✗ ff_lzw_encode_init(s->lzws, ptr,
425 ✗ s->buf_size - (*s->buf - s->buf_start),
426 12, FF_LZW_TIFF, 0);
427 }
428 569 s->strip_offsets[i / s->rps] = ptr - pkt->data;
429 }
430
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 3994 if (is_yuv) {
431 250 pack_yuv(s, p, s->yuv_line, i);
432 250 ret = encode_strip(s, s->yuv_line, ptr, bytes_per_row, s->compr);
433 250 i += s->subsampling[1] - 1;
434 } else
435 3744 ret = encode_strip(s, p->data[0] + i * p->linesize[0],
436 ptr, bytes_per_row, s->compr);
437
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 3994 if (ret < 0) {
438 ✗ av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
439 ✗ goto fail;
440 }
441 3994 s->strip_sizes[i / s->rps] += ret;
442 3994 ptr += ret;
443
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 3994 if (s->compr == TIFF_LZW &&
444 ✗ (i == s->height - 1 || i % s->rps == s->rps - 1)) {
445 ✗ ret = ff_lzw_encode_flush(s->lzws);
446 ✗ s->strip_sizes[(i / s->rps)] += ret;
447 ✗ ptr += ret;
448 }
449 }
450
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 15 if (s->compr == TIFF_LZW)
451 ✗ av_freep(&s->lzws);
452 }
453
454 15 s->num_entries = 0;
455
456
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 15 ADD_ENTRY1(s, TIFF_SUBFILE, AV_TIFF_LONG, 0);
457
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 15 ADD_ENTRY1(s, TIFF_WIDTH, AV_TIFF_LONG, s->width);
458
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 15 ADD_ENTRY1(s, TIFF_HEIGHT, AV_TIFF_LONG, s->height);
459
460
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 15 if (s->bpp_tab_size)
461
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 15 ADD_ENTRY(s, TIFF_BPP, AV_TIFF_SHORT, s->bpp_tab_size, bpp_tab);
462
463
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 15 ADD_ENTRY1(s, TIFF_COMPR, AV_TIFF_SHORT, s->compr);
464
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 15 ADD_ENTRY1(s, TIFF_PHOTOMETRIC, AV_TIFF_SHORT, s->photometric_interpretation);
465
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 15 ADD_ENTRY(s, TIFF_STRIP_OFFS, AV_TIFF_LONG, strips, s->strip_offsets);
466
467 15 AVFrameSideData *sd = av_frame_get_side_data(pict, AV_FRAME_DATA_DISPLAYMATRIX);
468
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 15 if (sd) {
469 1 int orientation = av_exif_matrix_to_orientation((int32_t *) sd->data);
470
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 1 if (orientation >= 1 && orientation <= 8)
471
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 1 ADD_ENTRY1(s, TIFF_ORIENTATION, AV_TIFF_SHORT, orientation);
472 }
473
474
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 15 if (s->bpp_tab_size)
475
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 15 ADD_ENTRY1(s, TIFF_SAMPLES_PER_PIXEL, AV_TIFF_SHORT, s->bpp_tab_size);
476
477
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 15 ADD_ENTRY1(s, TIFF_ROWSPERSTRIP, AV_TIFF_LONG, s->rps);
478
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 15 ADD_ENTRY(s, TIFF_STRIP_SIZE, AV_TIFF_LONG, strips, s->strip_sizes);
479
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 15 ADD_ENTRY(s, TIFF_XRES, AV_TIFF_RATIONAL, 1, res);
480
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 15 if (avctx->sample_aspect_ratio.num > 0 &&
481
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 2 avctx->sample_aspect_ratio.den > 0) {
482 2 AVRational y = av_mul_q(av_make_q(s->dpi, 1),
483 avctx->sample_aspect_ratio);
484 2 res[0] = y.num;
485 2 res[1] = y.den;
486 }
487
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 15 ADD_ENTRY(s, TIFF_YRES, AV_TIFF_RATIONAL, 1, res);
488
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 15 ADD_ENTRY1(s, TIFF_RES_UNIT, AV_TIFF_SHORT, 2);
489
490
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 15 if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT))
491 ✗ ADD_ENTRY(s, TIFF_SOFTWARE_NAME, AV_TIFF_STRING,
492 strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
493
494
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 15 if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
495 uint16_t pal[256 * 3];
496 ✗ for (i = 0; i < 256; i++) {
497 ✗ uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
498 ✗ pal[i] = ((rgb >> 16) & 0xff) * 257;
499 ✗ pal[i + 256] = ((rgb >> 8) & 0xff) * 257;
500 ✗ pal[i + 512] = (rgb & 0xff) * 257;
501 }
502 ✗ ADD_ENTRY(s, TIFF_PAL, AV_TIFF_SHORT, 256 * 3, pal);
503 }
504
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 15 if (alpha)
505 ✗ ADD_ENTRY1(s,TIFF_EXTRASAMPLES, AV_TIFF_SHORT, 2);
506
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 15 if (is_yuv) {
507 /** according to CCIR Recommendation 601.1 */
508 2 uint32_t refbw[12] = { 15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1 };
509
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 2 ADD_ENTRY(s, TIFF_YCBCR_SUBSAMPLING, AV_TIFF_SHORT, 2, s->subsampling);
510
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 2 if (avctx->chroma_sample_location == AVCHROMA_LOC_TOPLEFT)
511 ✗ ADD_ENTRY1(s, TIFF_YCBCR_POSITIONING, AV_TIFF_SHORT, 2);
512
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 2 ADD_ENTRY(s, TIFF_REFERENCE_BW, AV_TIFF_RATIONAL, 6, refbw);
513 }
514 // write offset to dir
515 15 bytestream_put_le32(&offset, ptr - pkt->data);
516
517
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 15 if (check_size(s, 6 + s->num_entries * 12)) {
518 ✗ ret = AVERROR(EINVAL);
519 ✗ goto fail;
520 }
521 15 bytestream_put_le16(&ptr, s->num_entries); // write tag count
522 15 bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
523 15 bytestream_put_le32(&ptr, 0);
524
525 15 pkt->size = ptr - pkt->data;
526 15 *got_packet = 1;
527
528 15 fail:
529 15 return ret < 0 ? ret : 0;
530 }
531
532 3 static av_cold int encode_init(AVCodecContext *avctx)
533 {
534 3 TiffEncoderContext *s = avctx->priv_data;
535
536 #if !CONFIG_ZLIB
537 if (s->compr == TIFF_DEFLATE) {
538 av_log(avctx, AV_LOG_ERROR,
539 "Deflate compression needs zlib compiled in\n");
540 return AVERROR(ENOSYS);
541 }
542 #endif
543
544 3 s->avctx = avctx;
545
546 3 return 0;
547 }
548
549 3 static av_cold int encode_close(AVCodecContext *avctx)
550 {
551 3 TiffEncoderContext *s = avctx->priv_data;
552
553 3 av_freep(&s->strip_sizes);
554 3 av_freep(&s->strip_offsets);
555 3 av_freep(&s->yuv_line);
556
557 3 return 0;
558 }
559
560 #define OFFSET(x) offsetof(TiffEncoderContext, x)
561 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
562 static const AVOption options[] = {
563 {"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},
564 { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, { .i64 = TIFF_PACKBITS }, TIFF_RAW, TIFF_DEFLATE, VE, .unit = "compression_algo" },
565 { "packbits", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_PACKBITS }, 0, 0, VE, .unit = "compression_algo" },
566 { "raw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_RAW }, 0, 0, VE, .unit = "compression_algo" },
567 { "lzw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_LZW }, 0, 0, VE, .unit = "compression_algo" },
568 { "deflate", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE }, 0, 0, VE, .unit = "compression_algo" },
569 { NULL },
570 };
571
572 static const AVClass tiffenc_class = {
573 .class_name = "TIFF encoder",
574 .item_name = av_default_item_name,
575 .option = options,
576 .version = LIBAVUTIL_VERSION_INT,
577 };
578
579 const FFCodec ff_tiff_encoder = {
580 .p.name = "tiff",
581 CODEC_LONG_NAME("TIFF image"),
582 .p.type = AVMEDIA_TYPE_VIDEO,
583 .p.id = AV_CODEC_ID_TIFF,
584 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
585 AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
586 .priv_data_size = sizeof(TiffEncoderContext),
587 .init = encode_init,
588 .close = encode_close,
589 FF_CODEC_ENCODE_CB(encode_frame),
590 CODEC_PIXFMTS(
591 AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48LE, AV_PIX_FMT_PAL8,
592 AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64LE,
593 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_YA16LE,
594 AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_MONOWHITE,
595 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
596 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P),
597 .color_ranges = AVCOL_RANGE_MPEG,
598 .p.priv_class = &tiffenc_class,
599 };
600