3 * Copyright (c) 2007 Bartlomiej Wolowiec
5 * This file is part of FFmpeg.
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.
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.
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
25 * @author Bartlomiej Wolowiec
28 #include "libavutil/imgutils.h"
29 #include "libavutil/log.h"
30 #include "libavutil/opt.h"
37 #include "libavutil/opt.h"
38 #include "bytestream.h"
44 #define TIFF_MAX_ENTRY 32
46 /** sizes of various TIFF field types (string size = 1)*/
47 static const uint8_t type_sizes2[6] = {
51 typedef struct TiffEncoderContext {
52 AVClass *class; ///< for private options
53 AVCodecContext *avctx;
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 int photometric_interpretation; ///< photometric interpretation
62 int strips; ///< number of strips
63 int rps; ///< row per strip
64 uint8_t entries[TIFF_MAX_ENTRY*12]; ///< entires in header
65 int num_entries; ///< number of entires
66 uint8_t **buf; ///< actual position in buffer
67 uint8_t *buf_start; ///< pointer to first byte in buffer
68 int buf_size; ///< buffer size
69 uint16_t subsampling[2]; ///< YUV subsampling factors
70 struct LZWEncodeState *lzws; ///< LZW Encode state
71 uint32_t dpi; ///< image resolution in DPI
76 * Check free space in buffer
77 * @param s Tiff context
78 * @param need Needed bytes
79 * @return 0 - ok, 1 - no free space
81 static inline int check_size(TiffEncoderContext * s, uint64_t need)
83 if (s->buf_size < *s->buf - s->buf_start + need) {
84 *s->buf = s->buf_start + s->buf_size + 1;
85 av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
92 * Put n values to buffer
94 * @param p Pointer to pointer to output buffer
95 * @param n Number of values
96 * @param val Pointer to values
97 * @param type Type of values
98 * @param flip =0 - normal copy, >0 - flip
100 static void tnput(uint8_t ** p, int n, const uint8_t * val, enum TiffTypes type,
105 flip ^= ((int[]) {0, 0, 0, 1, 3, 3})[type];
107 for (i = 0; i < n * type_sizes2[type]; i++)
108 *(*p)++ = val[i ^ flip];
112 * Add entry to directory in tiff header.
113 * @param s Tiff context
114 * @param tag Tag that identifies the entry
115 * @param type Entry type
116 * @param count The number of values
117 * @param ptr_val Pointer to values
119 static void add_entry(TiffEncoderContext * s,
120 enum TiffTags tag, enum TiffTypes type, int count,
123 uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
125 av_assert0(s->num_entries < TIFF_MAX_ENTRY);
127 bytestream_put_le16(&entries_ptr, tag);
128 bytestream_put_le16(&entries_ptr, type);
129 bytestream_put_le32(&entries_ptr, count);
131 if (type_sizes[type] * count <= 4) {
132 tnput(&entries_ptr, count, ptr_val, type, 0);
134 bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
135 check_size(s, count * type_sizes2[type]);
136 tnput(s->buf, count, ptr_val, type, 0);
142 static void add_entry1(TiffEncoderContext * s,
143 enum TiffTags tag, enum TiffTypes type, int val){
146 add_entry(s, tag, type, 1, type == TIFF_SHORT ? (void *)&w : (void *)&dw);
150 * Encode one strip in tiff file
152 * @param s Tiff context
153 * @param src Input buffer
154 * @param dst Output buffer
155 * @param n Size of input buffer
156 * @param compr Compression method
157 * @return Number of output bytes. If an output error is encountered, -1 returned
159 static int encode_strip(TiffEncoderContext * s, const int8_t * src,
160 uint8_t * dst, int n, int compr)
166 case TIFF_ADOBE_DEFLATE:
168 unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
169 if (compress(dst, &zlen, src, n) != Z_OK) {
170 av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
177 if (check_size(s, n))
182 return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start), src, 1, n, 2, 0xff, -1, 0);
184 return ff_lzw_encode(s->lzws, src, n);
190 static void pack_yuv(TiffEncoderContext * s, uint8_t * dst, int lnum)
192 AVFrame *p = &s->picture;
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 if(s->width % s->subsampling[0] || s->height % s->subsampling[1]){
198 for (i = 0; i < w; i++){
199 for (j = 0; j < s->subsampling[1]; j++)
200 for (k = 0; k < s->subsampling[0]; k++)
201 *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
202 FFMIN(i * s->subsampling[0] + k, s->width-1)];
207 for (i = 0; i < w; i++){
208 for (j = 0; j < s->subsampling[1]; j++)
209 for (k = 0; k < s->subsampling[0]; k++)
210 *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
211 i * s->subsampling[0] + k];
218 static av_cold int encode_init(AVCodecContext *avctx)
220 TiffEncoderContext *s = avctx->priv_data;
222 avctx->coded_frame= &s->picture;
223 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
224 avctx->coded_frame->key_frame = 1;
230 static int encode_frame(AVCodecContext * avctx, AVPacket *pkt,
231 const AVFrame *pict, int *got_packet)
233 TiffEncoderContext *s = avctx->priv_data;
234 AVFrame *const p = &s->picture;
239 uint32_t *strip_sizes = NULL;
240 uint32_t *strip_offsets = NULL;
242 uint32_t res[2] = { s->dpi, 1 }; // image resolution (72/1)
246 uint8_t *yuv_line = NULL;
247 int shift_h, shift_v;
251 s->width = avctx->width;
252 s->height = avctx->height;
253 s->subsampling[0] = 1;
254 s->subsampling[1] = 1;
256 avctx->bits_per_coded_sample =
257 s->bpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]);
259 switch (avctx->pix_fmt) {
260 case PIX_FMT_RGBA64LE:
261 case PIX_FMT_RGB48LE:
264 s->photometric_interpretation = 2;
267 avctx->bits_per_coded_sample = 0x28;
269 case PIX_FMT_GRAY16LE:
270 s->photometric_interpretation = 1;
273 s->photometric_interpretation = 3;
275 case PIX_FMT_MONOBLACK:
276 case PIX_FMT_MONOWHITE:
277 s->photometric_interpretation = avctx->pix_fmt == PIX_FMT_MONOBLACK;
279 case PIX_FMT_YUV420P:
280 case PIX_FMT_YUV422P:
281 case PIX_FMT_YUV440P:
282 case PIX_FMT_YUV444P:
283 case PIX_FMT_YUV410P:
284 case PIX_FMT_YUV411P:
285 s->photometric_interpretation = 6;
286 avcodec_get_chroma_sub_sample(avctx->pix_fmt,
288 s->subsampling[0] = 1 << shift_h;
289 s->subsampling[1] = 1 << shift_v;
293 av_log(s->avctx, AV_LOG_ERROR,
294 "This colors format is not supported\n");
298 s->bpp_tab_size = av_pix_fmt_descriptors[avctx->pix_fmt].nb_components;
299 for (i = 0; i < s->bpp_tab_size; i++)
300 bpp_tab[i] = av_pix_fmt_descriptors[avctx->pix_fmt].comp[i].depth_minus1 + 1;
302 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE || s->compr == TIFF_LZW)
303 //best choose for DEFLATE
306 s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1); // suggest size of strip
307 s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1]; // round rps up
309 strips = (s->height - 1) / s->rps + 1;
311 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * s->bpp * 2 +
312 avctx->height * 4 + FF_MIN_BUFFER_SIZE)) < 0)
315 s->buf_start = pkt->data;
317 s->buf_size = pkt->size;
319 if (check_size(s, 8))
323 bytestream_put_le16(&ptr, 0x4949);
324 bytestream_put_le16(&ptr, 42);
327 bytestream_put_le32(&ptr, 0);
329 strip_sizes = av_mallocz(sizeof(*strip_sizes) * strips);
330 strip_offsets = av_mallocz(sizeof(*strip_offsets) * strips);
332 bytes_per_row = (((s->width - 1)/s->subsampling[0] + 1) * s->bpp
333 * s->subsampling[0] * s->subsampling[1] + 7) >> 3;
335 yuv_line = av_malloc(bytes_per_row);
336 if (yuv_line == NULL){
337 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
343 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
348 zlen = bytes_per_row * s->rps;
349 zbuf = av_malloc(zlen);
350 strip_offsets[0] = ptr - pkt->data;
352 for (j = 0; j < s->rps; j++) {
354 pack_yuv(s, yuv_line, j);
355 memcpy(zbuf + zn, yuv_line, bytes_per_row);
356 j += s->subsampling[1] - 1;
359 memcpy(zbuf + j * bytes_per_row,
360 p->data[0] + j * p->linesize[0], bytes_per_row);
363 ret = encode_strip(s, zbuf, ptr, zn, s->compr);
366 av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
370 strip_sizes[0] = ptr - pkt->data - strip_offsets[0];
374 if(s->compr == TIFF_LZW)
375 s->lzws = av_malloc(ff_lzw_encode_state_size);
376 for (i = 0; i < s->height; i++) {
377 if (strip_sizes[i / s->rps] == 0) {
378 if(s->compr == TIFF_LZW){
379 ff_lzw_encode_init(s->lzws, ptr, s->buf_size - (*s->buf - s->buf_start),
380 12, FF_LZW_TIFF, put_bits);
382 strip_offsets[i / s->rps] = ptr - pkt->data;
385 pack_yuv(s, yuv_line, i);
386 ret = encode_strip(s, yuv_line, ptr, bytes_per_row, s->compr);
387 i += s->subsampling[1] - 1;
390 ret = encode_strip(s, p->data[0] + i * p->linesize[0],
391 ptr, bytes_per_row, s->compr);
393 av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
396 strip_sizes[i / s->rps] += ret;
398 if(s->compr == TIFF_LZW && (i==s->height-1 || i%s->rps == s->rps-1)){
399 ret = ff_lzw_encode_flush(s->lzws, flush_put_bits);
400 strip_sizes[(i / s->rps )] += ret ;
404 if(s->compr == TIFF_LZW)
410 add_entry1(s,TIFF_SUBFILE, TIFF_LONG, 0);
411 add_entry1(s,TIFF_WIDTH, TIFF_LONG, s->width);
412 add_entry1(s,TIFF_HEIGHT, TIFF_LONG, s->height);
415 add_entry(s, TIFF_BPP, TIFF_SHORT, s->bpp_tab_size, bpp_tab);
417 add_entry1(s,TIFF_COMPR, TIFF_SHORT, s->compr);
418 add_entry1(s,TIFF_INVERT, TIFF_SHORT, s->photometric_interpretation);
419 add_entry(s, TIFF_STRIP_OFFS, TIFF_LONG, strips, strip_offsets);
422 add_entry1(s,TIFF_SAMPLES_PER_PIXEL, TIFF_SHORT, s->bpp_tab_size);
424 add_entry1(s,TIFF_ROWSPERSTRIP, TIFF_LONG, s->rps);
425 add_entry(s, TIFF_STRIP_SIZE, TIFF_LONG, strips, strip_sizes);
426 add_entry(s, TIFF_XRES, TIFF_RATIONAL, 1, res);
427 add_entry(s, TIFF_YRES, TIFF_RATIONAL, 1, res);
428 add_entry1(s,TIFF_RES_UNIT, TIFF_SHORT, 2);
430 if(!(avctx->flags & CODEC_FLAG_BITEXACT))
431 add_entry(s, TIFF_SOFTWARE_NAME, TIFF_STRING,
432 strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
434 if (avctx->pix_fmt == PIX_FMT_PAL8) {
435 uint16_t pal[256 * 3];
436 for (i = 0; i < 256; i++) {
437 uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
438 pal[i] = ((rgb >> 16) & 0xff) * 257;
439 pal[i + 256] = ((rgb >> 8 ) & 0xff) * 257;
440 pal[i + 512] = ( rgb & 0xff) * 257;
442 add_entry(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal);
445 /** according to CCIR Recommendation 601.1 */
446 uint32_t refbw[12] = {15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1};
447 add_entry(s, TIFF_YCBCR_SUBSAMPLING, TIFF_SHORT, 2, s->subsampling);
448 add_entry(s, TIFF_REFERENCE_BW, TIFF_RATIONAL, 6, refbw);
450 bytestream_put_le32(&offset, ptr - pkt->data); // write offset to dir
452 if (check_size(s, 6 + s->num_entries * 12)) {
453 ret = AVERROR(EINVAL);
456 bytestream_put_le16(&ptr, s->num_entries); // write tag count
457 bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
458 bytestream_put_le32(&ptr, 0);
460 pkt->size = ptr - pkt->data;
461 pkt->flags |= AV_PKT_FLAG_KEY;
465 av_free(strip_sizes);
466 av_free(strip_offsets);
468 return ret < 0 ? ret : 0;
471 #define OFFSET(x) offsetof(TiffEncoderContext, x)
472 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
473 static const AVOption options[] = {
474 {"dpi", "set the image resolution (in dpi)", OFFSET(dpi), AV_OPT_TYPE_INT, {.dbl = 72}, 1, 0x10000, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},
475 { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, {TIFF_PACKBITS}, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" },
476 { "packbits", NULL, 0, AV_OPT_TYPE_CONST, {TIFF_PACKBITS}, 0, 0, VE, "compression_algo" },
477 { "raw", NULL, 0, AV_OPT_TYPE_CONST, {TIFF_RAW}, 0, 0, VE, "compression_algo" },
478 { "lzw", NULL, 0, AV_OPT_TYPE_CONST, {TIFF_LZW}, 0, 0, VE, "compression_algo" },
480 { "deflate", NULL, 0, AV_OPT_TYPE_CONST, {TIFF_DEFLATE}, 0, 0, VE, "compression_algo" },
485 static const AVClass tiffenc_class = {
486 .class_name = "TIFF encoder",
487 .item_name = av_default_item_name,
489 .version = LIBAVUTIL_VERSION_INT,
492 AVCodec ff_tiff_encoder = {
494 .type = AVMEDIA_TYPE_VIDEO,
496 .priv_data_size = sizeof(TiffEncoderContext),
498 .encode2 = encode_frame,
499 .pix_fmts = (const enum PixelFormat[]) {
500 PIX_FMT_RGB24, PIX_FMT_PAL8, PIX_FMT_GRAY8, PIX_FMT_GRAY8A, PIX_FMT_GRAY16LE,
501 PIX_FMT_MONOBLACK, PIX_FMT_MONOWHITE,
502 PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV440P, PIX_FMT_YUV444P,
503 PIX_FMT_YUV410P, PIX_FMT_YUV411P, PIX_FMT_RGB48LE,
504 PIX_FMT_RGBA, PIX_FMT_RGBA64LE,
507 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
508 .priv_class = &tiffenc_class,