| 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]; |
| 238 | int ret = 0; |
| 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 | |
| 330 | if (strips > INT_MAX / FFMAX(sizeof(s->strip_sizes[0]), sizeof(s->strip_offsets[0]))) { |
| 331 | ret = AVERROR(ENOMEM); |
| 332 | goto fail; |
| 333 | } |
| 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) |
| 423 | av_freep(&s->lzws); |
| 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 | }; |