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)
111 while (--width >= 0) {
112 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
113 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
114 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
115 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
119 while (--width >= 0) {
120 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
121 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
126 memcpy(dst + offset, src, width);
128 memset(dst + offset, c, width);
133 static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uint8_t *src, int size, int lines){
134 int c, line, pixels, code;
135 const uint8_t *ssrc = src;
136 int width = ((s->width * s->bpp) + 7) >> 3;
138 uint8_t *zbuf; unsigned long outlen;
140 if(s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE){
142 outlen = width * lines;
143 zbuf = av_malloc(outlen);
144 ret = tiff_uncompress(zbuf, &outlen, src, size);
146 av_log(s->avctx, AV_LOG_ERROR, "Uncompressing failed (%lu of %lu) with error %d\n", outlen, (unsigned long)width * lines, ret);
151 for(line = 0; line < lines; line++){
153 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
155 memcpy(dst, src, width);
164 if(s->compr == TIFF_LZW){
165 if(ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0){
166 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
170 if(s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4){
172 uint8_t *src2 = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
174 if(!src2 || (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE < (unsigned)size){
175 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
179 av_log(s->avctx, AV_LOG_ERROR, "Uncompressed fax mode is not supported (yet)\n");
184 memcpy(src2, src, size);
186 for(i = 0; i < size; i++)
187 src2[i] = av_reverse[src[i]];
189 memset(src2+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
194 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride, s->compr, s->fax_opts);
200 for(line = 0; line < lines; line++){
201 if(src - ssrc > size){
202 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
207 if (ssrc + size - src < width)
208 return AVERROR_INVALIDDATA;
209 if (!s->fill_order) {
210 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
213 for (i = 0; i < width; i++)
214 dst[i] = av_reverse[src[i]];
219 for(pixels = 0; pixels < width;){
220 code = (int8_t)*src++;
223 if(pixels + code > width){
224 av_log(s->avctx, AV_LOG_ERROR, "Copy went out of bounds\n");
227 horizontal_fill(s->bpp, dst, 1, src, 0, code, pixels);
230 }else if(code != -128){ // -127..-1
232 if(pixels + code > width){
233 av_log(s->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
237 horizontal_fill(s->bpp, dst, 0, NULL, c, code, pixels);
243 pixels = ff_lzw_decode(s->lzw, dst, width);
245 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n", pixels, width);
249 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
257 static int init_image(TiffContext *s)
262 switch (s->bpp * 10 + s->bppcount) {
264 s->avctx->pix_fmt = PIX_FMT_MONOBLACK;
269 s->avctx->pix_fmt = PIX_FMT_PAL8;
272 s->avctx->pix_fmt = PIX_FMT_RGB24;
275 s->avctx->pix_fmt = PIX_FMT_GRAY16BE;
278 s->avctx->pix_fmt = PIX_FMT_RGBA;
281 s->avctx->pix_fmt = s->le ? PIX_FMT_RGB48LE : PIX_FMT_RGB48BE;
284 av_log(s->avctx, AV_LOG_ERROR,
285 "This format is not supported (bpp=%d, bppcount=%d)\n",
286 s->bpp, s->bppcount);
287 return AVERROR_INVALIDDATA;
289 if (s->width != s->avctx->width || s->height != s->avctx->height) {
290 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
292 avcodec_set_dimensions(s->avctx, s->width, s->height);
294 if (s->picture.data[0])
295 s->avctx->release_buffer(s->avctx, &s->picture);
296 if ((ret = s->avctx->get_buffer(s->avctx, &s->picture)) < 0) {
297 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
300 if (s->avctx->pix_fmt == PIX_FMT_PAL8) {
301 if (s->palette_is_set) {
302 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
304 /* make default grayscale pal */
305 pal = (uint32_t *) s->picture.data[1];
306 for (i = 0; i < 1<<s->bpp; i++)
307 pal[i] = 0xFF << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
313 static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *buf, const uint8_t *end_buf)
315 int tag, type, count, off, value = 0;
318 const uint8_t *rp, *gp, *bp;
320 if (end_buf - buf < 12)
322 tag = tget_short(&buf, s->le);
323 type = tget_short(&buf, s->le);
324 count = tget_long(&buf, s->le);
325 off = tget_long(&buf, s->le);
332 value = tget(&buf, type, s->le);
348 }else if(type_sizes[type] * count <= 4){
354 if(buf && (buf < start || buf > end_buf)){
355 av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
369 av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%d, %d components)\n", s->bpp, count);
372 if(count == 1) s->bpp = value;
376 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) + ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
381 for(i = 0; i < count && buf < end_buf; i++) s->bpp += tget(&buf, type, s->le);
388 case TIFF_SAMPLES_PER_PIXEL:
390 av_log(s->avctx, AV_LOG_ERROR,
391 "Samples per pixel requires a single value, many provided\n");
392 return AVERROR_INVALIDDATA;
394 if (s->bppcount == 1)
412 case TIFF_ADOBE_DEFLATE:
416 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
421 av_log(s->avctx, AV_LOG_ERROR, "JPEG compression is not supported\n");
424 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", s->compr);
428 case TIFF_ROWSPERSTRIP:
429 if(type == TIFF_LONG && value == -1)
430 value = s->avctx->height;
432 av_log(s->avctx, AV_LOG_ERROR, "Incorrect value of rows per strip\n");
437 case TIFF_STRIP_OFFS:
442 s->stripdata = start + off;
444 if(s->strips == 1) s->rps = s->height;
446 if(s->stripdata > end_buf){
447 av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
451 case TIFF_STRIP_SIZE:
453 s->stripsizes = NULL;
454 s->stripsize = value;
457 s->stripsizes = start + off;
461 if(s->stripsizes > end_buf){
462 av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
467 s->predictor = value;
481 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n", value);
485 case TIFF_FILL_ORDER:
486 if(value < 1 || value > 2){
487 av_log(s->avctx, AV_LOG_ERROR, "Unknown FillOrder value %d, trying default one\n", value);
490 s->fill_order = value - 1;
493 pal = (uint32_t *) s->palette;
494 off = type_sizes[type];
495 if (count / 3 > 256 || end_buf - buf < count / 3 * off * 3)
498 gp = buf + count / 3 * off;
499 bp = buf + count / 3 * off * 2;
500 off = (type_sizes[type] - 1) << 3;
501 for(i = 0; i < count / 3; i++){
503 j |= (tget(&rp, type, s->le) >> off) << 16;
504 j |= (tget(&gp, type, s->le) >> off) << 8;
505 j |= tget(&bp, type, s->le) >> off;
508 s->palette_is_set = 1;
512 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
517 if(s->compr == TIFF_G3)
521 if(s->compr == TIFF_G4)
525 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n", tag, tag);
530 static int decode_frame(AVCodecContext *avctx,
531 void *data, int *data_size,
534 const uint8_t *buf = avpkt->data;
535 int buf_size = avpkt->size;
536 TiffContext * const s = avctx->priv_data;
537 AVFrame *picture = data;
538 AVFrame * const p= (AVFrame*)&s->picture;
539 const uint8_t *orig_buf = buf, *end_buf = buf + buf_size;
544 unsigned soff, ssize;
548 if (end_buf - buf < 8)
549 return AVERROR_INVALIDDATA;
550 id = AV_RL16(buf); buf += 2;
551 if(id == 0x4949) le = 1;
552 else if(id == 0x4D4D) le = 0;
554 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
561 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
562 // that further identifies the file as a TIFF file"
563 if(tget_short(&buf, le) != 42){
564 av_log(avctx, AV_LOG_ERROR, "The answer to life, universe and everything is not correct!\n");
567 /* parse image file directory */
568 off = tget_long(&buf, le);
569 if (off >= UINT_MAX - 14 || end_buf - orig_buf < off + 14) {
570 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
571 return AVERROR_INVALIDDATA;
573 buf = orig_buf + off;
574 entries = tget_short(&buf, le);
575 for(i = 0; i < entries; i++){
576 if(tiff_decode_tag(s, orig_buf, buf, end_buf) < 0)
580 if(!s->stripdata && !s->stripoff){
581 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
584 /* now we have the data and may start decoding */
585 if ((ret = init_image(s)) < 0)
588 if(s->strips == 1 && !s->stripsize){
589 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
590 s->stripsize = buf_size - s->stripoff;
592 stride = p->linesize[0];
594 for(i = 0; i < s->height; i += s->rps){
596 if (s->stripsizes >= end_buf)
597 return AVERROR_INVALIDDATA;
598 ssize = tget(&s->stripsizes, s->sstype, s->le);
600 ssize = s->stripsize;
603 if (s->stripdata >= end_buf)
604 return AVERROR_INVALIDDATA;
605 soff = tget(&s->stripdata, s->sot, s->le);
609 if (soff > buf_size || ssize > buf_size - soff) {
610 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
613 if(tiff_unpack_strip(s, dst, stride, orig_buf + soff, ssize, FFMIN(s->rps, s->height - i)) < 0)
615 dst += s->rps * stride;
617 if(s->predictor == 2){
620 ssize = s->width * soff;
621 if (s->avctx->pix_fmt == PIX_FMT_RGB48LE) {
622 for (i = 0; i < s->height; i++) {
623 for (j = soff; j < ssize; j += 2)
624 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
627 } else if (s->avctx->pix_fmt == PIX_FMT_RGB48BE) {
628 for (i = 0; i < s->height; i++) {
629 for (j = soff; j < ssize; j += 2)
630 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
634 for(i = 0; i < s->height; i++) {
635 for(j = soff; j < ssize; j++)
636 dst[j] += dst[j - soff];
643 dst = s->picture.data[0];
644 for(i = 0; i < s->height; i++){
645 for(j = 0; j < s->picture.linesize[0]; j++)
646 dst[j] = (s->avctx->pix_fmt == PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
647 dst += s->picture.linesize[0];
650 *picture= *(AVFrame*)&s->picture;
651 *data_size = sizeof(AVPicture);
656 static av_cold int tiff_init(AVCodecContext *avctx){
657 TiffContext *s = avctx->priv_data;
662 avcodec_get_frame_defaults((AVFrame*)&s->picture);
663 avctx->coded_frame= (AVFrame*)&s->picture;
664 ff_lzw_decode_open(&s->lzw);
665 ff_ccitt_unpack_init();
670 static av_cold int tiff_end(AVCodecContext *avctx)
672 TiffContext * const s = avctx->priv_data;
674 ff_lzw_decode_close(&s->lzw);
675 if(s->picture.data[0])
676 avctx->release_buffer(avctx, &s->picture);
680 AVCodec ff_tiff_decoder = {
682 .type = AVMEDIA_TYPE_VIDEO,
684 .priv_data_size = sizeof(TiffContext),
687 .decode = decode_frame,
688 .capabilities = CODEC_CAP_DR1,
689 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),