2 * Copyright (c) 2006 Konstantin Shishkov
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * @author Konstantin Shishkov
34 #include "libavutil/common.h"
35 #include "libavutil/intreadwrite.h"
36 #include "libavutil/imgutils.h"
38 typedef struct TiffContext {
39 AVCodecContext *avctx;
43 unsigned int bpp, bppcount;
44 uint32_t palette[256];
53 int strips, rps, sstype;
55 const uint8_t* stripdata;
56 const uint8_t* stripsizes;
57 int stripsize, stripoff;
61 static int tget_short(const uint8_t **p, int le){
62 int v = le ? AV_RL16(*p) : AV_RB16(*p);
67 static int tget_long(const uint8_t **p, int le){
68 int v = le ? AV_RL32(*p) : AV_RB32(*p);
73 static int tget(const uint8_t **p, int type, int le){
75 case TIFF_BYTE : return *(*p)++;
76 case TIFF_SHORT: return tget_short(p, le);
77 case TIFF_LONG : return tget_long (p, le);
83 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src, int size)
88 memset(&zstream, 0, sizeof(zstream));
89 zstream.next_in = src;
90 zstream.avail_in = size;
91 zstream.next_out = dst;
92 zstream.avail_out = *len;
93 zret = inflateInit(&zstream);
95 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
98 zret = inflate(&zstream, Z_SYNC_FLUSH);
100 *len = zstream.total_out;
101 return zret == Z_STREAM_END ? Z_OK : zret;
105 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
106 int usePtr, const uint8_t *src,
107 uint8_t c, int width, int offset)
112 for (i = 0; i < width; i++) {
113 dst[(i+offset)*4+0] = (usePtr ? src[i] : c) >> 6;
114 dst[(i+offset)*4+1] = (usePtr ? src[i] : c) >> 4 & 0x3;
115 dst[(i+offset)*4+2] = (usePtr ? src[i] : c) >> 2 & 0x3;
116 dst[(i+offset)*4+3] = (usePtr ? src[i] : c) & 0x3;
118 } else if (bpp == 4) {
119 for (i = 0; i < width; i++) {
120 dst[(i+offset)*2+0] = (usePtr ? src[i] : c) >> 4;
121 dst[(i+offset)*2+1] = (usePtr ? src[i] : c) & 0xF;
125 memcpy(dst + offset, src, width);
127 memset(dst + offset, c, width);
132 static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uint8_t *src, int size, int lines){
133 int c, line, pixels, code;
134 const uint8_t *ssrc = src;
135 int width = ((s->width * s->bpp) + 7) >> 3;
137 uint8_t *zbuf; unsigned long outlen;
139 if(s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE){
141 outlen = width * lines;
142 zbuf = av_malloc(outlen);
143 ret = tiff_uncompress(zbuf, &outlen, src, size);
145 av_log(s->avctx, AV_LOG_ERROR, "Uncompressing failed (%lu of %lu) with error %d\n", outlen, (unsigned long)width * lines, ret);
150 for(line = 0; line < lines; line++){
151 memcpy(dst, src, width);
159 if(s->compr == TIFF_LZW){
160 if(ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0){
161 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
165 if(s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4){
167 uint8_t *src2 = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
169 if(!src2 || (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE < (unsigned)size){
170 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
174 av_log(s->avctx, AV_LOG_ERROR, "Uncompressed fax mode is not supported (yet)\n");
179 memcpy(src2, src, size);
181 for(i = 0; i < size; i++)
182 src2[i] = av_reverse[src[i]];
184 memset(src2+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
189 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride, s->compr, s->fax_opts);
195 for(line = 0; line < lines; line++){
196 if(src - ssrc > size){
197 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
202 if (!s->fill_order) {
203 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
206 for (i = 0; i < width; i++)
207 dst[i] = av_reverse[src[i]];
212 for(pixels = 0; pixels < width;){
213 code = (int8_t)*src++;
216 if(pixels + code > width){
217 av_log(s->avctx, AV_LOG_ERROR, "Copy went out of bounds\n");
220 horizontal_fill(s->bpp, dst, 1, src, 0, code, pixels);
223 }else if(code != -128){ // -127..-1
225 if(pixels + code > width){
226 av_log(s->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
230 horizontal_fill(s->bpp, dst, 0, NULL, c, code, pixels);
236 pixels = ff_lzw_decode(s->lzw, dst, width);
238 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n", pixels, width);
248 static int init_image(TiffContext *s)
253 switch (s->bpp * 10 + s->bppcount) {
255 s->avctx->pix_fmt = PIX_FMT_MONOBLACK;
260 s->avctx->pix_fmt = PIX_FMT_PAL8;
263 s->avctx->pix_fmt = PIX_FMT_RGB24;
266 s->avctx->pix_fmt = PIX_FMT_GRAY16BE;
269 s->avctx->pix_fmt = PIX_FMT_RGBA;
272 s->avctx->pix_fmt = s->le ? PIX_FMT_RGB48LE : PIX_FMT_RGB48BE;
275 av_log(s->avctx, AV_LOG_ERROR,
276 "This format is not supported (bpp=%d, bppcount=%d)\n",
277 s->bpp, s->bppcount);
278 return AVERROR_INVALIDDATA;
280 if (s->width != s->avctx->width || s->height != s->avctx->height) {
281 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
283 avcodec_set_dimensions(s->avctx, s->width, s->height);
285 if (s->picture.data[0])
286 s->avctx->release_buffer(s->avctx, &s->picture);
287 if ((ret = s->avctx->get_buffer(s->avctx, &s->picture)) < 0) {
288 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
291 if (s->avctx->pix_fmt == PIX_FMT_PAL8) {
292 if (s->palette_is_set) {
293 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
295 /* make default grayscale pal */
296 pal = (uint32_t *) s->picture.data[1];
297 for (i = 0; i < 256; i++)
298 pal[i] = i * 0x010101;
304 static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *buf, const uint8_t *end_buf)
306 int tag, type, count, off, value = 0;
309 const uint8_t *rp, *gp, *bp;
311 tag = tget_short(&buf, s->le);
312 type = tget_short(&buf, s->le);
313 count = tget_long(&buf, s->le);
314 off = tget_long(&buf, s->le);
321 value = tget(&buf, type, s->le);
337 }else if(type_sizes[type] * count <= 4){
343 if(buf && (buf < start || buf > end_buf)){
344 av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
358 av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%d, %d components)\n", s->bpp, count);
361 if(count == 1) s->bpp = value;
365 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) + ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
370 for(i = 0; i < count; i++) s->bpp += tget(&buf, type, s->le);
377 case TIFF_SAMPLES_PER_PIXEL:
379 av_log(s->avctx, AV_LOG_ERROR,
380 "Samples per pixel requires a single value, many provided\n");
381 return AVERROR_INVALIDDATA;
383 if (s->bppcount == 1)
401 case TIFF_ADOBE_DEFLATE:
405 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
410 av_log(s->avctx, AV_LOG_ERROR, "JPEG compression is not supported\n");
413 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", s->compr);
417 case TIFF_ROWSPERSTRIP:
418 if(type == TIFF_LONG && value == -1)
419 value = s->avctx->height;
421 av_log(s->avctx, AV_LOG_ERROR, "Incorrect value of rows per strip\n");
426 case TIFF_STRIP_OFFS:
431 s->stripdata = start + off;
433 if(s->strips == 1) s->rps = s->height;
435 if(s->stripdata > end_buf){
436 av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
440 case TIFF_STRIP_SIZE:
442 s->stripsizes = NULL;
443 s->stripsize = value;
446 s->stripsizes = start + off;
450 if(s->stripsizes > end_buf){
451 av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
456 s->predictor = value;
470 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n", value);
474 case TIFF_FILL_ORDER:
475 if(value < 1 || value > 2){
476 av_log(s->avctx, AV_LOG_ERROR, "Unknown FillOrder value %d, trying default one\n", value);
479 s->fill_order = value - 1;
482 pal = (uint32_t *) s->palette;
483 off = type_sizes[type];
485 gp = buf + count / 3 * off;
486 bp = buf + count / 3 * off * 2;
487 off = (type_sizes[type] - 1) << 3;
488 for(i = 0; i < count / 3; i++){
490 j |= (tget(&rp, type, s->le) >> off) << 16;
491 j |= (tget(&gp, type, s->le) >> off) << 8;
492 j |= tget(&bp, type, s->le) >> off;
495 s->palette_is_set = 1;
499 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
504 if(s->compr == TIFF_G3)
508 if(s->compr == TIFF_G4)
512 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n", tag, tag);
517 static int decode_frame(AVCodecContext *avctx,
518 void *data, int *data_size,
521 const uint8_t *buf = avpkt->data;
522 int buf_size = avpkt->size;
523 TiffContext * const s = avctx->priv_data;
524 AVFrame *picture = data;
525 AVFrame * const p= (AVFrame*)&s->picture;
526 const uint8_t *orig_buf = buf, *end_buf = buf + buf_size;
527 int id, le, off, ret;
529 int stride, soff, ssize;
533 id = AV_RL16(buf); buf += 2;
534 if(id == 0x4949) le = 1;
535 else if(id == 0x4D4D) le = 0;
537 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
544 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
545 // that further identifies the file as a TIFF file"
546 if(tget_short(&buf, le) != 42){
547 av_log(avctx, AV_LOG_ERROR, "The answer to life, universe and everything is not correct!\n");
550 /* parse image file directory */
551 off = tget_long(&buf, le);
552 if(orig_buf + off + 14 >= end_buf){
553 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
556 buf = orig_buf + off;
557 entries = tget_short(&buf, le);
558 for(i = 0; i < entries; i++){
559 if(tiff_decode_tag(s, orig_buf, buf, end_buf) < 0)
563 if(!s->stripdata && !s->stripoff){
564 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
567 /* now we have the data and may start decoding */
568 if ((ret = init_image(s)) < 0)
571 if(s->strips == 1 && !s->stripsize){
572 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
573 s->stripsize = buf_size - s->stripoff;
575 stride = p->linesize[0];
577 for(i = 0; i < s->height; i += s->rps){
579 ssize = tget(&s->stripsizes, s->sstype, s->le);
581 ssize = s->stripsize;
583 if (ssize > buf_size) {
584 av_log(avctx, AV_LOG_ERROR, "Buffer size is smaller than strip size\n");
589 soff = tget(&s->stripdata, s->sot, s->le);
593 av_log(avctx, AV_LOG_ERROR, "Invalid stripoff: %d\n", soff);
594 return AVERROR(EINVAL);
596 if(tiff_unpack_strip(s, dst, stride, orig_buf + soff, ssize, FFMIN(s->rps, s->height - i)) < 0)
598 dst += s->rps * stride;
600 if(s->predictor == 2){
603 ssize = s->width * soff;
604 for(i = 0; i < s->height; i++) {
605 for(j = soff; j < ssize; j++)
606 dst[j] += dst[j - soff];
615 src = s->picture.data[0];
616 for(j = 0; j < s->height; j++){
617 for(i = 0; i < s->picture.linesize[0]; i++)
618 src[i] = 255 - src[i];
619 src += s->picture.linesize[0];
622 *picture= *(AVFrame*)&s->picture;
623 *data_size = sizeof(AVPicture);
628 static av_cold int tiff_init(AVCodecContext *avctx){
629 TiffContext *s = avctx->priv_data;
634 avcodec_get_frame_defaults((AVFrame*)&s->picture);
635 avctx->coded_frame= (AVFrame*)&s->picture;
636 ff_lzw_decode_open(&s->lzw);
637 ff_ccitt_unpack_init();
642 static av_cold int tiff_end(AVCodecContext *avctx)
644 TiffContext * const s = avctx->priv_data;
646 ff_lzw_decode_close(&s->lzw);
647 if(s->picture.data[0])
648 avctx->release_buffer(avctx, &s->picture);
652 AVCodec ff_tiff_decoder = {
654 .type = AVMEDIA_TYPE_VIDEO,
656 .priv_data_size = sizeof(TiffContext),
659 .decode = decode_frame,
660 .capabilities = CODEC_CAP_DR1,
661 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),