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2ba45a60 DM |
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 | |
54 | AVCodecContext *avctx; | |
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; | |
67 | uint8_t *yuv_line; | |
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 | |
78 | } TiffEncoderContext; | |
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 | */ | |
126 | static void add_entry(TiffEncoderContext *s, enum TiffTags tag, | |
127 | enum TiffTypes type, int count, const void *ptr_val) | |
128 | { | |
129 | uint8_t *entries_ptr = s->entries + 12 * s->num_entries; | |
130 | ||
131 | av_assert0(s->num_entries < TIFF_MAX_ENTRY); | |
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 | check_size(s, count * (int64_t)type_sizes2[type]); | |
142 | tnput(s->buf, count, ptr_val, type, 0); | |
143 | } | |
144 | ||
145 | s->num_entries++; | |
146 | } | |
147 | ||
148 | static void add_entry1(TiffEncoderContext *s, | |
149 | enum TiffTags tag, enum TiffTypes type, int val) | |
150 | { | |
151 | uint16_t w = val; | |
152 | uint32_t dw = val; | |
153 | add_entry(s, tag, type, 1, type == TIFF_SHORT ? (void *)&w : (void *)&dw); | |
154 | } | |
155 | ||
156 | /** | |
157 | * Encode one strip in tiff file. | |
158 | * | |
159 | * @param s Tiff context | |
160 | * @param src input buffer | |
161 | * @param dst output buffer | |
162 | * @param n size of input buffer | |
163 | * @param compr compression method | |
164 | * @return number of output bytes. If an output error is encountered, -1 is returned | |
165 | */ | |
166 | static int encode_strip(TiffEncoderContext *s, const int8_t *src, | |
167 | uint8_t *dst, int n, int compr) | |
168 | { | |
169 | switch (compr) { | |
170 | #if CONFIG_ZLIB | |
171 | case TIFF_DEFLATE: | |
172 | case TIFF_ADOBE_DEFLATE: | |
173 | { | |
174 | unsigned long zlen = s->buf_size - (*s->buf - s->buf_start); | |
175 | if (compress(dst, &zlen, src, n) != Z_OK) { | |
176 | av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n"); | |
177 | return -1; | |
178 | } | |
179 | return zlen; | |
180 | } | |
181 | #endif | |
182 | case TIFF_RAW: | |
183 | if (check_size(s, n)) | |
184 | return -1; | |
185 | memcpy(dst, src, n); | |
186 | return n; | |
187 | case TIFF_PACKBITS: | |
188 | return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start), | |
189 | src, 1, n, 2, 0xff, -1, 0); | |
190 | case TIFF_LZW: | |
191 | return ff_lzw_encode(s->lzws, src, n); | |
192 | default: | |
193 | return -1; | |
194 | } | |
195 | } | |
196 | ||
197 | static void pack_yuv(TiffEncoderContext *s, const AVFrame *p, | |
198 | uint8_t *dst, int lnum) | |
199 | { | |
200 | int i, j, k; | |
201 | int w = (s->width - 1) / s->subsampling[0] + 1; | |
202 | uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]]; | |
203 | uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]]; | |
204 | if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) { | |
205 | for (i = 0; i < w; i++) { | |
206 | for (j = 0; j < s->subsampling[1]; j++) | |
207 | for (k = 0; k < s->subsampling[0]; k++) | |
208 | *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] + | |
209 | FFMIN(i * s->subsampling[0] + k, s->width-1)]; | |
210 | *dst++ = *pu++; | |
211 | *dst++ = *pv++; | |
212 | } | |
213 | }else{ | |
214 | for (i = 0; i < w; i++) { | |
215 | for (j = 0; j < s->subsampling[1]; j++) | |
216 | for (k = 0; k < s->subsampling[0]; k++) | |
217 | *dst++ = p->data[0][(lnum + j) * p->linesize[0] + | |
218 | i * s->subsampling[0] + k]; | |
219 | *dst++ = *pu++; | |
220 | *dst++ = *pv++; | |
221 | } | |
222 | } | |
223 | } | |
224 | ||
225 | static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
226 | const AVFrame *pict, int *got_packet) | |
227 | { | |
228 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); | |
229 | TiffEncoderContext *s = avctx->priv_data; | |
230 | const AVFrame *const p = pict; | |
231 | int i; | |
232 | uint8_t *ptr; | |
233 | uint8_t *offset; | |
234 | uint32_t strips; | |
235 | int bytes_per_row; | |
236 | uint32_t res[2] = { s->dpi, 1 }; // image resolution (72/1) | |
237 | uint16_t bpp_tab[4]; | |
f6fa7814 | 238 | int ret = 0; |
2ba45a60 DM |
239 | int is_yuv = 0, alpha = 0; |
240 | int shift_h, shift_v; | |
241 | int packet_size; | |
242 | ||
243 | s->width = avctx->width; | |
244 | s->height = avctx->height; | |
245 | s->subsampling[0] = 1; | |
246 | s->subsampling[1] = 1; | |
247 | ||
248 | avctx->bits_per_coded_sample = | |
249 | s->bpp = av_get_bits_per_pixel(desc); | |
250 | s->bpp_tab_size = desc->nb_components; | |
251 | ||
252 | switch (avctx->pix_fmt) { | |
253 | case AV_PIX_FMT_RGBA64LE: | |
254 | case AV_PIX_FMT_RGBA: | |
255 | alpha = 1; | |
256 | case AV_PIX_FMT_RGB48LE: | |
257 | case AV_PIX_FMT_RGB24: | |
258 | s->photometric_interpretation = TIFF_PHOTOMETRIC_RGB; | |
259 | break; | |
260 | case AV_PIX_FMT_GRAY8: | |
261 | avctx->bits_per_coded_sample = 0x28; | |
262 | case AV_PIX_FMT_GRAY8A: | |
263 | alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A; | |
264 | case AV_PIX_FMT_GRAY16LE: | |
265 | case AV_PIX_FMT_MONOBLACK: | |
266 | s->photometric_interpretation = TIFF_PHOTOMETRIC_BLACK_IS_ZERO; | |
267 | break; | |
268 | case AV_PIX_FMT_PAL8: | |
269 | s->photometric_interpretation = TIFF_PHOTOMETRIC_PALETTE; | |
270 | break; | |
271 | case AV_PIX_FMT_MONOWHITE: | |
272 | s->photometric_interpretation = TIFF_PHOTOMETRIC_WHITE_IS_ZERO; | |
273 | break; | |
274 | case AV_PIX_FMT_YUV420P: | |
275 | case AV_PIX_FMT_YUV422P: | |
276 | case AV_PIX_FMT_YUV440P: | |
277 | case AV_PIX_FMT_YUV444P: | |
278 | case AV_PIX_FMT_YUV410P: | |
279 | case AV_PIX_FMT_YUV411P: | |
280 | av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v); | |
281 | s->photometric_interpretation = TIFF_PHOTOMETRIC_YCBCR; | |
282 | s->subsampling[0] = 1 << shift_h; | |
283 | s->subsampling[1] = 1 << shift_v; | |
284 | is_yuv = 1; | |
285 | break; | |
286 | default: | |
287 | av_log(s->avctx, AV_LOG_ERROR, | |
288 | "This colors format is not supported\n"); | |
289 | return -1; | |
290 | } | |
291 | ||
292 | for (i = 0; i < s->bpp_tab_size; i++) | |
293 | bpp_tab[i] = desc->comp[i].depth_minus1 + 1; | |
294 | ||
295 | if (s->compr == TIFF_DEFLATE || | |
296 | s->compr == TIFF_ADOBE_DEFLATE || | |
297 | s->compr == TIFF_LZW) | |
298 | // best choice for DEFLATE | |
299 | s->rps = s->height; | |
300 | else | |
301 | // suggest size of strip | |
302 | s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1); | |
303 | // round rps up | |
304 | s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1]; | |
305 | ||
306 | strips = (s->height - 1) / s->rps + 1; | |
307 | ||
308 | bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp * | |
309 | s->subsampling[0] * s->subsampling[1] + 7) >> 3; | |
310 | packet_size = avctx->height * bytes_per_row * 2 + | |
311 | avctx->height * 4 + FF_MIN_BUFFER_SIZE; | |
312 | ||
313 | if ((ret = ff_alloc_packet2(avctx, pkt, packet_size)) < 0) | |
314 | return ret; | |
315 | ptr = pkt->data; | |
316 | s->buf_start = pkt->data; | |
317 | s->buf = &ptr; | |
318 | s->buf_size = pkt->size; | |
319 | ||
320 | if (check_size(s, 8)) | |
321 | goto fail; | |
322 | ||
323 | // write header | |
324 | bytestream_put_le16(&ptr, 0x4949); | |
325 | bytestream_put_le16(&ptr, 42); | |
326 | ||
327 | offset = ptr; | |
328 | bytestream_put_le32(&ptr, 0); | |
329 | ||
f6fa7814 DM |
330 | if (strips > INT_MAX / FFMAX(sizeof(s->strip_sizes[0]), sizeof(s->strip_offsets[0]))) { |
331 | ret = AVERROR(ENOMEM); | |
332 | goto fail; | |
333 | } | |
2ba45a60 DM |
334 | av_fast_padded_mallocz(&s->strip_sizes , &s->strip_sizes_size , sizeof(s->strip_sizes [0]) * strips); |
335 | av_fast_padded_mallocz(&s->strip_offsets, &s->strip_offsets_size, sizeof(s->strip_offsets[0]) * strips); | |
336 | ||
337 | if (!s->strip_sizes || !s->strip_offsets) { | |
338 | ret = AVERROR(ENOMEM); | |
339 | goto fail; | |
340 | } | |
341 | ||
342 | if (is_yuv) { | |
343 | av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row); | |
344 | if (s->yuv_line == NULL) { | |
345 | av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n"); | |
346 | ret = AVERROR(ENOMEM); | |
347 | goto fail; | |
348 | } | |
349 | } | |
350 | ||
351 | #if CONFIG_ZLIB | |
352 | if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) { | |
353 | uint8_t *zbuf; | |
354 | int zlen, zn; | |
355 | int j; | |
356 | ||
357 | zlen = bytes_per_row * s->rps; | |
358 | zbuf = av_malloc(zlen); | |
359 | if (!zbuf) { | |
360 | ret = AVERROR(ENOMEM); | |
361 | goto fail; | |
362 | } | |
363 | s->strip_offsets[0] = ptr - pkt->data; | |
364 | zn = 0; | |
365 | for (j = 0; j < s->rps; j++) { | |
366 | if (is_yuv) { | |
367 | pack_yuv(s, p, s->yuv_line, j); | |
368 | memcpy(zbuf + zn, s->yuv_line, bytes_per_row); | |
369 | j += s->subsampling[1] - 1; | |
370 | } else | |
371 | memcpy(zbuf + j * bytes_per_row, | |
372 | p->data[0] + j * p->linesize[0], bytes_per_row); | |
373 | zn += bytes_per_row; | |
374 | } | |
375 | ret = encode_strip(s, zbuf, ptr, zn, s->compr); | |
376 | av_free(zbuf); | |
377 | if (ret < 0) { | |
378 | av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n"); | |
379 | goto fail; | |
380 | } | |
381 | ptr += ret; | |
382 | s->strip_sizes[0] = ptr - pkt->data - s->strip_offsets[0]; | |
383 | } else | |
384 | #endif | |
385 | { | |
386 | if (s->compr == TIFF_LZW) { | |
387 | s->lzws = av_malloc(ff_lzw_encode_state_size); | |
388 | if (!s->lzws) { | |
389 | ret = AVERROR(ENOMEM); | |
390 | goto fail; | |
391 | } | |
392 | } | |
393 | for (i = 0; i < s->height; i++) { | |
394 | if (s->strip_sizes[i / s->rps] == 0) { | |
395 | if (s->compr == TIFF_LZW) { | |
396 | ff_lzw_encode_init(s->lzws, ptr, | |
397 | s->buf_size - (*s->buf - s->buf_start), | |
398 | 12, FF_LZW_TIFF, put_bits); | |
399 | } | |
400 | s->strip_offsets[i / s->rps] = ptr - pkt->data; | |
401 | } | |
402 | if (is_yuv) { | |
403 | pack_yuv(s, p, s->yuv_line, i); | |
404 | ret = encode_strip(s, s->yuv_line, ptr, bytes_per_row, s->compr); | |
405 | i += s->subsampling[1] - 1; | |
406 | } else | |
407 | ret = encode_strip(s, p->data[0] + i * p->linesize[0], | |
408 | ptr, bytes_per_row, s->compr); | |
409 | if (ret < 0) { | |
410 | av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n"); | |
411 | goto fail; | |
412 | } | |
413 | s->strip_sizes[i / s->rps] += ret; | |
414 | ptr += ret; | |
415 | if (s->compr == TIFF_LZW && | |
416 | (i == s->height - 1 || i % s->rps == s->rps - 1)) { | |
417 | ret = ff_lzw_encode_flush(s->lzws, flush_put_bits); | |
418 | s->strip_sizes[(i / s->rps)] += ret; | |
419 | ptr += ret; | |
420 | } | |
421 | } | |
422 | if (s->compr == TIFF_LZW) | |
f6fa7814 | 423 | av_freep(&s->lzws); |
2ba45a60 DM |
424 | } |
425 | ||
426 | s->num_entries = 0; | |
427 | ||
428 | add_entry1(s, TIFF_SUBFILE, TIFF_LONG, 0); | |
429 | add_entry1(s, TIFF_WIDTH, TIFF_LONG, s->width); | |
430 | add_entry1(s, TIFF_HEIGHT, TIFF_LONG, s->height); | |
431 | ||
432 | if (s->bpp_tab_size) | |
433 | add_entry(s, TIFF_BPP, TIFF_SHORT, s->bpp_tab_size, bpp_tab); | |
434 | ||
435 | add_entry1(s, TIFF_COMPR, TIFF_SHORT, s->compr); | |
436 | add_entry1(s, TIFF_PHOTOMETRIC, TIFF_SHORT, s->photometric_interpretation); | |
437 | add_entry(s, TIFF_STRIP_OFFS, TIFF_LONG, strips, s->strip_offsets); | |
438 | ||
439 | if (s->bpp_tab_size) | |
440 | add_entry1(s, TIFF_SAMPLES_PER_PIXEL, TIFF_SHORT, s->bpp_tab_size); | |
441 | ||
442 | add_entry1(s, TIFF_ROWSPERSTRIP, TIFF_LONG, s->rps); | |
443 | add_entry(s, TIFF_STRIP_SIZE, TIFF_LONG, strips, s->strip_sizes); | |
444 | add_entry(s, TIFF_XRES, TIFF_RATIONAL, 1, res); | |
445 | if (avctx->sample_aspect_ratio.num > 0 && | |
446 | avctx->sample_aspect_ratio.den > 0) { | |
447 | AVRational y = av_mul_q(av_make_q(s->dpi, 1), | |
448 | avctx->sample_aspect_ratio); | |
449 | res[0] = y.num; | |
450 | res[1] = y.den; | |
451 | } | |
452 | add_entry(s, TIFF_YRES, TIFF_RATIONAL, 1, res); | |
453 | add_entry1(s, TIFF_RES_UNIT, TIFF_SHORT, 2); | |
454 | ||
455 | if (!(avctx->flags & CODEC_FLAG_BITEXACT)) | |
456 | add_entry(s, TIFF_SOFTWARE_NAME, TIFF_STRING, | |
457 | strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT); | |
458 | ||
459 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { | |
460 | uint16_t pal[256 * 3]; | |
461 | for (i = 0; i < 256; i++) { | |
462 | uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4); | |
463 | pal[i] = ((rgb >> 16) & 0xff) * 257; | |
464 | pal[i + 256] = ((rgb >> 8) & 0xff) * 257; | |
465 | pal[i + 512] = (rgb & 0xff) * 257; | |
466 | } | |
467 | add_entry(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal); | |
468 | } | |
469 | if (alpha) | |
470 | add_entry1(s,TIFF_EXTRASAMPLES, TIFF_SHORT, 2); | |
471 | if (is_yuv) { | |
472 | /** according to CCIR Recommendation 601.1 */ | |
473 | uint32_t refbw[12] = { 15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1 }; | |
474 | add_entry(s, TIFF_YCBCR_SUBSAMPLING, TIFF_SHORT, 2, s->subsampling); | |
475 | if (avctx->chroma_sample_location == AVCHROMA_LOC_TOPLEFT) | |
476 | add_entry1(s, TIFF_YCBCR_POSITIONING, TIFF_SHORT, 2); | |
477 | add_entry(s, TIFF_REFERENCE_BW, TIFF_RATIONAL, 6, refbw); | |
478 | } | |
479 | // write offset to dir | |
480 | bytestream_put_le32(&offset, ptr - pkt->data); | |
481 | ||
482 | if (check_size(s, 6 + s->num_entries * 12)) { | |
483 | ret = AVERROR(EINVAL); | |
484 | goto fail; | |
485 | } | |
486 | bytestream_put_le16(&ptr, s->num_entries); // write tag count | |
487 | bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12); | |
488 | bytestream_put_le32(&ptr, 0); | |
489 | ||
490 | pkt->size = ptr - pkt->data; | |
491 | pkt->flags |= AV_PKT_FLAG_KEY; | |
492 | *got_packet = 1; | |
493 | ||
494 | fail: | |
495 | return ret < 0 ? ret : 0; | |
496 | } | |
497 | ||
498 | static av_cold int encode_init(AVCodecContext *avctx) | |
499 | { | |
500 | TiffEncoderContext *s = avctx->priv_data; | |
501 | ||
502 | avctx->coded_frame = av_frame_alloc(); | |
503 | if (!avctx->coded_frame) | |
504 | return AVERROR(ENOMEM); | |
505 | ||
506 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; | |
507 | avctx->coded_frame->key_frame = 1; | |
508 | s->avctx = avctx; | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | static av_cold int encode_close(AVCodecContext *avctx) | |
514 | { | |
515 | TiffEncoderContext *s = avctx->priv_data; | |
516 | ||
517 | av_frame_free(&avctx->coded_frame); | |
518 | av_freep(&s->strip_sizes); | |
519 | av_freep(&s->strip_offsets); | |
520 | av_freep(&s->yuv_line); | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | #define OFFSET(x) offsetof(TiffEncoderContext, x) | |
526 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM | |
527 | static const AVOption options[] = { | |
528 | {"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}, | |
529 | { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, { .i64 = TIFF_PACKBITS }, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" }, | |
530 | { "packbits", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_PACKBITS }, 0, 0, VE, "compression_algo" }, | |
531 | { "raw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_RAW }, 0, 0, VE, "compression_algo" }, | |
532 | { "lzw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_LZW }, 0, 0, VE, "compression_algo" }, | |
533 | #if CONFIG_ZLIB | |
534 | { "deflate", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE }, 0, 0, VE, "compression_algo" }, | |
535 | #endif | |
536 | { NULL }, | |
537 | }; | |
538 | ||
539 | static const AVClass tiffenc_class = { | |
540 | .class_name = "TIFF encoder", | |
541 | .item_name = av_default_item_name, | |
542 | .option = options, | |
543 | .version = LIBAVUTIL_VERSION_INT, | |
544 | }; | |
545 | ||
546 | AVCodec ff_tiff_encoder = { | |
547 | .name = "tiff", | |
548 | .long_name = NULL_IF_CONFIG_SMALL("TIFF image"), | |
549 | .type = AVMEDIA_TYPE_VIDEO, | |
550 | .id = AV_CODEC_ID_TIFF, | |
551 | .priv_data_size = sizeof(TiffEncoderContext), | |
552 | .init = encode_init, | |
553 | .close = encode_close, | |
554 | .capabilities = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY, | |
555 | .encode2 = encode_frame, | |
556 | .pix_fmts = (const enum AVPixelFormat[]) { | |
557 | AV_PIX_FMT_RGB24, AV_PIX_FMT_PAL8, AV_PIX_FMT_GRAY8, | |
558 | AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16LE, | |
559 | AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_MONOWHITE, | |
560 | AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, | |
561 | AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_RGB48LE, | |
562 | AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64LE, | |
563 | AV_PIX_FMT_NONE | |
564 | }, | |
565 | .priv_class = &tiffenc_class, | |
566 | }; |