a991b1fe |
/*
* Copyright (c) 2006 Konstantin Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ |
ee5c8a9b |
/** |
ba87f080 |
* @file |
1e97700f |
* TIFF image decoder |
ee5c8a9b |
* @author Konstantin Shishkov
*/ |
f6f95d4e |
|
1d9c2dc8 |
#include "config.h" |
b250f9c6 |
#if CONFIG_ZLIB |
a991b1fe |
#include <zlib.h>
#endif |
46ce9ded |
|
d5c62122 |
#include "libavutil/attributes.h" |
7cb5467a |
#include "libavutil/avstring.h" |
bdcc13f2 |
#include "libavutil/intreadwrite.h" |
7ffe76e5 |
#include "libavutil/imgutils.h" |
46ce9ded |
#include "avcodec.h" |
7cb5467a |
#include "bytestream.h" |
46ce9ded |
#include "faxcompr.h"
#include "internal.h"
#include "lzw.h"
#include "mathops.h"
#include "tiff.h" |
7cb5467a |
#include "tiff_data.h" |
8a7295be |
#include "thread.h" |
339aabd5 |
|
a991b1fe |
typedef struct TiffContext {
AVCodecContext *avctx; |
1ec83d9a |
GetByteContext gb; |
a991b1fe |
int width, height; |
bbc572a2 |
unsigned int bpp, bppcount; |
7ca5338b |
uint32_t palette[256];
int palette_is_set; |
a991b1fe |
int le; |
aa909d30 |
enum TiffCompr compr; |
e2570297 |
int invert; |
379ad978 |
int planar; |
92799d32 |
int fax_opts; |
108c96d5 |
int predictor; |
a58e96be |
int fill_order; |
a991b1fe |
|
108c96d5 |
int strips, rps, sstype; |
a991b1fe |
int sot; |
1ec83d9a |
int stripsizesoff, stripsize, stripoff, strippos; |
ffc5430b |
LZWState *lzw; |
75abfab6 |
|
17714adb |
uint8_t *deinvert_buf;
int deinvert_buf_size;
|
75abfab6 |
int geotag_count;
TiffGeoTag *geotags; |
a991b1fe |
} TiffContext;
|
75abfab6 |
static void free_geotags(TiffContext *const s)
{
int i;
for (i = 0; i < s->geotag_count; i++) {
if (s->geotags[i].val)
av_freep(&s->geotags[i].val);
}
av_freep(&s->geotags); |
a744064c |
s->geotag_count = 0; |
75abfab6 |
}
#define RET_GEOKEY(TYPE, array, element)\
if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
static const char *get_geokey_name(int key)
{
RET_GEOKEY(VERT, vert, name);
RET_GEOKEY(PROJ, proj, name);
RET_GEOKEY(GEOG, geog, name);
RET_GEOKEY(CONF, conf, name);
return NULL;
}
static int get_geokey_type(int key)
{
RET_GEOKEY(VERT, vert, type);
RET_GEOKEY(PROJ, proj, type);
RET_GEOKEY(GEOG, geog, type);
RET_GEOKEY(CONF, conf, type);
return AVERROR_INVALIDDATA;
}
static int cmp_id_key(const void *id, const void *k)
{
return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
}
static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
{ |
f28043d0 |
TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
if(r)
return r->name;
return NULL; |
75abfab6 |
}
static char *get_geokey_val(int key, int val)
{
char *ap;
if (val == TIFF_GEO_KEY_UNDEFINED)
return av_strdup("undefined");
if (val == TIFF_GEO_KEY_USER_DEFINED)
return av_strdup("User-Defined");
#define RET_GEOKEY_VAL(TYPE, array)\
if (val >= TIFF_##TYPE##_OFFSET &&\
val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
switch (key) {
case TIFF_GT_MODEL_TYPE_GEOKEY:
RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
break;
case TIFF_GT_RASTER_TYPE_GEOKEY:
RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
break;
case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
case TIFF_VERTICAL_UNITS_GEOKEY:
RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
break;
case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
break;
case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
break;
case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
break;
case TIFF_GEOG_ELLIPSOID_GEOKEY:
RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
break;
case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
break;
case TIFF_PROJECTED_CS_TYPE_GEOKEY: |
f28043d0 |
ap = av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
if(ap) return ap; |
75abfab6 |
break;
case TIFF_PROJECTION_GEOKEY: |
f28043d0 |
ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
if(ap) return ap; |
75abfab6 |
break;
case TIFF_PROJ_COORD_TRANS_GEOKEY:
RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
break;
case TIFF_VERTICAL_CS_TYPE_GEOKEY:
RET_GEOKEY_VAL(VERT_CS, vert_cs);
RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
break;
}
ap = av_malloc(14);
if (ap)
snprintf(ap, 14, "Unknown-%d", val);
return ap;
}
static char *doubles2str(double *dp, int count, const char *sep)
{
int i;
char *ap, *ap0; |
e1219cda |
uint64_t component_len; |
75abfab6 |
if (!sep) sep = ", "; |
526049ce |
component_len = 24LL + strlen(sep); |
e1219cda |
if (count >= (INT_MAX - 1)/component_len)
return NULL;
ap = av_malloc(component_len * count + 1); |
75abfab6 |
if (!ap)
return NULL;
ap0 = ap;
ap[0] = '\0';
for (i = 0; i < count; i++) { |
526049ce |
unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep); |
4b20b21b |
if(l >= component_len) {
av_free(ap0); |
17f9626b |
return NULL; |
4b20b21b |
} |
75abfab6 |
ap += l;
}
ap0[strlen(ap0) - strlen(sep)] = '\0';
return ap0;
}
|
1ec83d9a |
static int add_metadata(int count, int type, |
edcc51fb |
const char *name, const char *sep, TiffContext *s, AVFrame *frame) |
75abfab6 |
{
switch(type) { |
b7ba7cbd |
case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, avpriv_frame_get_metadatap(frame));
case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, avpriv_frame_get_metadatap(frame));
case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, avpriv_frame_get_metadatap(frame)); |
75abfab6 |
default : return AVERROR_INVALIDDATA;
};
}
|
5f5e37e0 |
static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
int usePtr, const uint8_t *src,
uint8_t c, int width, int offset)
{ |
b46fb615 |
switch (bpp) { |
7ee0649f |
case 1:
while (--width >= 0) {
dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
}
break; |
b46fb615 |
case 2: |
e767968c |
while (--width >= 0) {
dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6; |
5f5e37e0 |
} |
b46fb615 |
break;
case 4: |
e767968c |
while (--width >= 0) {
dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4; |
5f5e37e0 |
} |
b46fb615 |
break;
default: |
5f5e37e0 |
if (usePtr) {
memcpy(dst + offset, src, width);
} else {
memset(dst + offset, c, width);
}
}
}
|
30d7dcce |
static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
{
int i;
av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
if (!s->deinvert_buf)
return AVERROR(ENOMEM);
for (i = 0; i < size; i++)
s->deinvert_buf[i] = ff_reverse[src[i]];
return 0;
}
|
eec69b39 |
#if CONFIG_ZLIB |
f346b6bb |
static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
int size) |
e96f885a |
{ |
a92be9b8 |
z_stream zstream = { 0 }; |
e96f885a |
int zret;
|
a804632b |
zstream.next_in = (uint8_t *)src; |
46ce9ded |
zstream.avail_in = size;
zstream.next_out = dst; |
e96f885a |
zstream.avail_out = *len; |
46ce9ded |
zret = inflateInit(&zstream); |
e96f885a |
if (zret != Z_OK) {
av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
return zret;
}
zret = inflate(&zstream, Z_SYNC_FLUSH);
inflateEnd(&zstream);
*len = zstream.total_out;
return zret == Z_STREAM_END ? Z_OK : zret;
} |
10393768 |
static int tiff_unpack_zlib(TiffContext *s, uint8_t *dst, int stride,
const uint8_t *src, int size,
int width, int lines)
{
uint8_t *zbuf;
unsigned long outlen;
int ret, line;
outlen = width * lines;
zbuf = av_malloc(outlen);
if (!zbuf)
return AVERROR(ENOMEM); |
a804632b |
if (s->fill_order) {
if ((ret = deinvert_buffer(s, src, size)) < 0) {
av_free(zbuf);
return ret;
}
src = s->deinvert_buf;
} |
10393768 |
ret = tiff_uncompress(zbuf, &outlen, src, size);
if (ret != Z_OK) {
av_log(s->avctx, AV_LOG_ERROR,
"Uncompressing failed (%lu of %lu) with error %d\n", outlen,
(unsigned long)width * lines, ret);
av_free(zbuf);
return AVERROR_UNKNOWN;
}
src = zbuf;
for (line = 0; line < lines; line++) { |
a804632b |
if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
} else {
memcpy(dst, src, width);
} |
10393768 |
dst += stride;
src += width;
}
av_free(zbuf);
return 0;
} |
eec69b39 |
#endif |
e96f885a |
|
016c5b06 |
static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride, |
1fec361f |
const uint8_t *src, int size, int width, int lines) |
016c5b06 |
{
int i, ret = 0; |
1fec361f |
int line; |
016c5b06 |
uint8_t *src2 = av_malloc((unsigned)size +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!src2) {
av_log(s->avctx, AV_LOG_ERROR,
"Error allocating temporary buffer\n");
return AVERROR(ENOMEM);
}
if (s->fax_opts & 2) { |
999ccd2d |
avpriv_request_sample(s->avctx, "Uncompressed fax mode"); |
016c5b06 |
av_free(src2); |
999ccd2d |
return AVERROR_PATCHWELCOME; |
016c5b06 |
}
if (!s->fill_order) {
memcpy(src2, src, size);
} else {
for (i = 0; i < size; i++)
src2[i] = ff_reverse[src[i]];
}
memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
s->compr, s->fax_opts); |
1fec361f |
if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
for (line = 0; line < lines; line++) {
horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
dst += stride;
} |
016c5b06 |
av_free(src2);
return ret;
}
|
f346b6bb |
static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
const uint8_t *src, int size, int lines)
{ |
b2a7b81b |
int c, line, pixels, code, ret; |
08e50529 |
const uint8_t *ssrc = src; |
46ce9ded |
int width = ((s->width * s->bpp) + 7) >> 3; |
a991b1fe |
|
379ad978 |
if (s->planar)
width /= s->bppcount;
|
90a43060 |
if (size <= 0)
return AVERROR_INVALIDDATA;
|
f346b6bb |
if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) { |
10393768 |
#if CONFIG_ZLIB
return tiff_unpack_zlib(s, dst, stride, src, size, width, lines);
#else
av_log(s->avctx, AV_LOG_ERROR,
"zlib support not enabled, "
"deflate compression not supported\n");
return AVERROR(ENOSYS); |
a991b1fe |
#endif |
10393768 |
} |
f346b6bb |
if (s->compr == TIFF_LZW) { |
17714adb |
if (s->fill_order) { |
30d7dcce |
if ((ret = deinvert_buffer(s, src, size)) < 0)
return ret;
ssrc = src = s->deinvert_buf; |
17714adb |
} |
52334f5b |
if (size > 1 && !src[0] && (src[1]&1)) {
av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
} |
b2a7b81b |
if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) { |
ffc5430b |
av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n"); |
b2a7b81b |
return ret; |
ffc5430b |
}
} |
46ce9ded |
if (s->compr == TIFF_CCITT_RLE ||
s->compr == TIFF_G3 ||
s->compr == TIFF_G4) { |
1fec361f |
return tiff_unpack_fax(s, dst, stride, src, size, width, lines); |
92799d32 |
} |
f346b6bb |
for (line = 0; line < lines; line++) {
if (src - ssrc > size) { |
a991b1fe |
av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
} |
f346b6bb |
switch (s->compr) { |
a991b1fe |
case TIFF_RAW: |
5ca5d432 |
if (ssrc + size - src < width)
return AVERROR_INVALIDDATA; |
b437f5b0 |
if (!s->fill_order) { |
ac627b3d |
horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), |
714d2f97 |
dst, 1, src, 0, width, 0); |
b437f5b0 |
} else {
int i;
for (i = 0; i < width; i++) |
d5c62122 |
dst[i] = ff_reverse[src[i]]; |
b437f5b0 |
} |
4386ed69 |
src += width; |
a991b1fe |
break;
case TIFF_PACKBITS: |
f346b6bb |
for (pixels = 0; pixels < width;) { |
fefc6567 |
if (ssrc + size - src < 2) {
av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
return AVERROR_INVALIDDATA;
} |
7984ed87 |
code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++; |
f346b6bb |
if (code >= 0) { |
a991b1fe |
code++; |
9c221697 |
if (pixels + code > width ||
ssrc + size - src < code) { |
f346b6bb |
av_log(s->avctx, AV_LOG_ERROR,
"Copy went out of bounds\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
} |
ac627b3d |
horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), |
714d2f97 |
dst, 1, src, 0, code, pixels); |
46ce9ded |
src += code; |
a991b1fe |
pixels += code; |
f346b6bb |
} else if (code != -128) { // -127..-1 |
a991b1fe |
code = (-code) + 1; |
f346b6bb |
if (pixels + code > width) {
av_log(s->avctx, AV_LOG_ERROR,
"Run went out of bounds\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
}
c = *src++; |
ac627b3d |
horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), |
714d2f97 |
dst, 0, NULL, c, code, pixels); |
a991b1fe |
pixels += code;
}
} |
7984ed87 |
if (s->fill_order) {
int i;
for (i = 0; i < width; i++)
dst[i] = ff_reverse[dst[i]];
} |
a991b1fe |
break; |
ffc5430b |
case TIFF_LZW:
pixels = ff_lzw_decode(s->lzw, dst, width); |
f346b6bb |
if (pixels < width) {
av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
pixels, width); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
ffc5430b |
} |
ac627b3d |
if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) |
e767968c |
horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0); |
ffc5430b |
break; |
a991b1fe |
}
dst += stride;
}
return 0;
}
|
8a7295be |
static int init_image(TiffContext *s, ThreadFrame *frame) |
bbc572a2 |
{
int i, ret;
uint32_t *pal;
|
86005184 |
switch (s->planar * 1000 + s->bpp * 10 + s->bppcount) { |
bbc572a2 |
case 11: |
4392b3d1 |
if (!s->palette_is_set) { |
ac627b3d |
s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK; |
4392b3d1 |
break;
} |
5f5e37e0 |
case 21:
case 41: |
bbc572a2 |
case 81: |
716d413c |
s->avctx->pix_fmt = AV_PIX_FMT_PAL8; |
bbc572a2 |
break;
case 243: |
86005184 |
s->avctx->pix_fmt = AV_PIX_FMT_RGB24; |
bbc572a2 |
break;
case 161: |
716d413c |
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE; |
bbc572a2 |
break; |
f746f379 |
case 162: |
86005184 |
s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A; |
f746f379 |
break; |
bbc572a2 |
case 324: |
86005184 |
s->avctx->pix_fmt = AV_PIX_FMT_RGBA; |
bbc572a2 |
break;
case 483: |
86005184 |
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE; |
bbc572a2 |
break; |
c714cd3b |
case 644: |
86005184 |
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
break;
case 1243:
s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
break;
case 1324:
s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
break;
case 1483:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
break;
case 1644:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE; |
c714cd3b |
break; |
bbc572a2 |
default:
av_log(s->avctx, AV_LOG_ERROR,
"This format is not supported (bpp=%d, bppcount=%d)\n",
s->bpp, s->bppcount);
return AVERROR_INVALIDDATA;
}
if (s->width != s->avctx->width || s->height != s->avctx->height) { |
c265b8bb |
ret = ff_set_dimensions(s->avctx, s->width, s->height);
if (ret < 0) |
bbc572a2 |
return ret;
} |
8a7295be |
if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0) |
bbc572a2 |
return ret; |
716d413c |
if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
7ca5338b |
if (s->palette_is_set) { |
8a7295be |
memcpy(frame->f->data[1], s->palette, sizeof(s->palette)); |
7ca5338b |
} else {
/* make default grayscale pal */ |
8a7295be |
pal = (uint32_t *) frame->f->data[1]; |
d898ab90 |
for (i = 0; i < 1<<s->bpp; i++) |
b12d92ef |
pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101; |
7ca5338b |
} |
bbc572a2 |
}
return 0;
} |
a991b1fe |
|
edcc51fb |
static int tiff_decode_tag(TiffContext *s, AVFrame *frame) |
a991b1fe |
{ |
e32548d1 |
unsigned tag, type, count, off, value = 0; |
1ec83d9a |
int i, j, k, pos, start; |
75abfab6 |
int ret; |
640b73e1 |
uint32_t *pal; |
75abfab6 |
double *dp; |
a991b1fe |
|
b7ba7cbd |
ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
if (ret < 0) { |
61e0e809 |
goto end; |
44736387 |
}
|
46143d25 |
off = bytestream2_tell(&s->gb); |
f346b6bb |
if (count == 1) {
switch (type) { |
a991b1fe |
case TIFF_BYTE:
case TIFF_SHORT:
case TIFF_LONG: |
d5ad4e4a |
value = ff_tget(&s->gb, type, s->le); |
a991b1fe |
break; |
6a4583e9 |
case TIFF_STRING: |
f346b6bb |
if (count <= 4) { |
6a4583e9 |
break;
} |
a991b1fe |
default: |
e32548d1 |
value = UINT_MAX; |
a991b1fe |
}
}
|
f346b6bb |
switch (tag) { |
a991b1fe |
case TIFF_WIDTH:
s->width = value;
break;
case TIFF_HEIGHT:
s->height = value;
break;
case TIFF_BPP: |
bbc572a2 |
s->bppcount = count; |
f346b6bb |
if (count > 4) {
av_log(s->avctx, AV_LOG_ERROR,
"This format is not supported (bpp=%d, %d components)\n",
s->bpp, count); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
d381249b |
} |
f346b6bb |
if (count == 1)
s->bpp = value;
else {
switch (type) { |
a991b1fe |
case TIFF_BYTE:
case TIFF_SHORT:
case TIFF_LONG: |
ec8a152b |
s->bpp = 0; |
292850b6 |
if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count) |
501db2f3 |
return AVERROR_INVALIDDATA; |
292850b6 |
for (i = 0; i < count; i++) |
b7ba7cbd |
s->bpp += ff_tget(&s->gb, type, s->le); |
a991b1fe |
break;
default:
s->bpp = -1;
}
} |
bbc572a2 |
break;
case TIFF_SAMPLES_PER_PIXEL:
if (count != 1) {
av_log(s->avctx, AV_LOG_ERROR,
"Samples per pixel requires a single value, many provided\n");
return AVERROR_INVALIDDATA; |
e2570297 |
} |
a34418c2 |
if (value > 4U) {
av_log(s->avctx, AV_LOG_ERROR,
"Samples per pixel %d is too large\n", value);
return AVERROR_INVALIDDATA;
} |
bbc572a2 |
if (s->bppcount == 1)
s->bpp *= value;
s->bppcount = value; |
a991b1fe |
break;
case TIFF_COMPR: |
46ce9ded |
s->compr = value; |
108c96d5 |
s->predictor = 0; |
f346b6bb |
switch (s->compr) { |
a991b1fe |
case TIFF_RAW:
case TIFF_PACKBITS: |
ffc5430b |
case TIFF_LZW: |
92799d32 |
case TIFF_CCITT_RLE:
break;
case TIFF_G3:
case TIFF_G4:
s->fax_opts = 0; |
a991b1fe |
break;
case TIFF_DEFLATE:
case TIFF_ADOBE_DEFLATE: |
b250f9c6 |
#if CONFIG_ZLIB |
a991b1fe |
break;
#else
av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n"); |
b2a7b81b |
return AVERROR(ENOSYS); |
a991b1fe |
#endif |
27c18939 |
case TIFF_JPEG:
case TIFF_NEWJPEG: |
999ccd2d |
avpriv_report_missing_feature(s->avctx, "JPEG compression"); |
b2a7b81b |
return AVERROR_PATCHWELCOME; |
a991b1fe |
default: |
f346b6bb |
av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
s->compr); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
}
break;
case TIFF_ROWSPERSTRIP: |
e32548d1 |
if (type == TIFF_LONG && value == UINT_MAX) |
4784a135 |
value = s->height; |
f346b6bb |
if (value < 1) {
av_log(s->avctx, AV_LOG_ERROR,
"Incorrect value of rows per strip\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
}
s->rps = value;
break;
case TIFF_STRIP_OFFS: |
f346b6bb |
if (count == 1) { |
7cb5467a |
s->strippos = 0; |
46ce9ded |
s->stripoff = value; |
f346b6bb |
} else |
1ec83d9a |
s->strippos = off; |
a991b1fe |
s->strips = count; |
f346b6bb |
if (s->strips == 1)
s->rps = s->height; |
a991b1fe |
s->sot = type; |
1ec83d9a |
if (s->strippos > bytestream2_size(&s->gb)) { |
f346b6bb |
av_log(s->avctx, AV_LOG_ERROR,
"Tag referencing position outside the image\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
}
break;
case TIFF_STRIP_SIZE: |
f346b6bb |
if (count == 1) { |
1ec83d9a |
s->stripsizesoff = 0; |
46ce9ded |
s->stripsize = value;
s->strips = 1; |
f346b6bb |
} else { |
1ec83d9a |
s->stripsizesoff = off; |
a991b1fe |
}
s->strips = count; |
108c96d5 |
s->sstype = type; |
1ec83d9a |
if (s->stripsizesoff > bytestream2_size(&s->gb)) { |
f346b6bb |
av_log(s->avctx, AV_LOG_ERROR,
"Tag referencing position outside the image\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
}
break; |
98dfdfdd |
case TIFF_TILE_BYTE_COUNTS:
case TIFF_TILE_LENGTH:
case TIFF_TILE_OFFSETS:
case TIFF_TILE_WIDTH:
av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
return AVERROR_PATCHWELCOME;
break; |
a991b1fe |
case TIFF_PREDICTOR: |
108c96d5 |
s->predictor = value; |
a991b1fe |
break; |
e2570297 |
case TIFF_INVERT: |
f346b6bb |
switch (value) { |
e2570297 |
case 0:
s->invert = 1;
break;
case 1:
s->invert = 0;
break; |
d00026d0 |
case 2:
case 3:
break;
default: |
f346b6bb |
av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
value); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
e2570297 |
}
break; |
a58e96be |
case TIFF_FILL_ORDER: |
f346b6bb |
if (value < 1 || value > 2) {
av_log(s->avctx, AV_LOG_ERROR,
"Unknown FillOrder value %d, trying default one\n", value); |
a58e96be |
value = 1;
}
s->fill_order = value - 1;
break; |
e2570297 |
case TIFF_PAL: |
7ca5338b |
pal = (uint32_t *) s->palette; |
339aabd5 |
off = type_sizes[type]; |
1ec83d9a |
if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3) |
b2a7b81b |
return AVERROR_INVALIDDATA; |
339aabd5 |
off = (type_sizes[type] - 1) << 3; |
1ec83d9a |
for (k = 2; k >= 0; k--) {
for (i = 0; i < count / 3; i++) {
if (k == 2) |
b12d92ef |
pal[i] = 0xFFU << 24; |
b7ba7cbd |
j = (ff_tget(&s->gb, type, s->le) >> off) << (k * 8); |
1ec83d9a |
pal[i] |= j;
} |
e2570297 |
} |
7ca5338b |
s->palette_is_set = 1; |
2878cecd |
break;
case TIFF_PLANAR: |
379ad978 |
s->planar = value == 2; |
2878cecd |
break; |
92799d32 |
case TIFF_T4OPTIONS: |
f346b6bb |
if (s->compr == TIFF_G3) |
7c6f5238 |
s->fax_opts = value;
break; |
92799d32 |
case TIFF_T6OPTIONS: |
f346b6bb |
if (s->compr == TIFF_G4) |
7c6f5238 |
s->fax_opts = value; |
92799d32 |
break; |
75abfab6 |
#define ADD_METADATA(count, name, sep)\ |
edcc51fb |
if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\ |
75abfab6 |
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\ |
61e0e809 |
goto end;\ |
75abfab6 |
}
case TIFF_MODEL_PIXEL_SCALE:
ADD_METADATA(count, "ModelPixelScaleTag", NULL);
break;
case TIFF_MODEL_TRANSFORMATION:
ADD_METADATA(count, "ModelTransformationTag", NULL);
break;
case TIFF_MODEL_TIEPOINT:
ADD_METADATA(count, "ModelTiepointTag", NULL);
break;
case TIFF_GEO_KEY_DIRECTORY:
ADD_METADATA(1, "GeoTIFF_Version", NULL);
ADD_METADATA(2, "GeoTIFF_Key_Revision", "."); |
b7ba7cbd |
s->geotag_count = ff_tget_short(&s->gb, s->le); |
75abfab6 |
if (s->geotag_count > count / 4 - 1) {
s->geotag_count = count / 4 - 1;
av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
} |
0e3dacb1 |
if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4) {
s->geotag_count = 0; |
292850b6 |
return -1; |
0e3dacb1 |
} |
75abfab6 |
s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
if (!s->geotags) {
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); |
0e3dacb1 |
s->geotag_count = 0; |
61e0e809 |
goto end; |
75abfab6 |
}
for (i = 0; i < s->geotag_count; i++) { |
b7ba7cbd |
s->geotags[i].key = ff_tget_short(&s->gb, s->le);
s->geotags[i].type = ff_tget_short(&s->gb, s->le);
s->geotags[i].count = ff_tget_short(&s->gb, s->le); |
75abfab6 |
if (!s->geotags[i].type) |
b7ba7cbd |
s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le)); |
75abfab6 |
else |
b7ba7cbd |
s->geotags[i].offset = ff_tget_short(&s->gb, s->le); |
75abfab6 |
}
break;
case TIFF_GEO_DOUBLE_PARAMS: |
292850b6 |
if (count >= INT_MAX / sizeof(int64_t))
return AVERROR_INVALIDDATA;
if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
return AVERROR_INVALIDDATA; |
75abfab6 |
dp = av_malloc(count * sizeof(double));
if (!dp) {
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); |
61e0e809 |
goto end; |
75abfab6 |
}
for (i = 0; i < count; i++) |
b7ba7cbd |
dp[i] = ff_tget_double(&s->gb, s->le); |
75abfab6 |
for (i = 0; i < s->geotag_count; i++) {
if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
if (s->geotags[i].count == 0
|| s->geotags[i].offset + s->geotags[i].count > count) {
av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
} else {
char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
if (!ap) {
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
av_freep(&dp);
return AVERROR(ENOMEM);
}
s->geotags[i].val = ap;
}
}
}
av_freep(&dp);
break;
case TIFF_GEO_ASCII_PARAMS: |
1ec83d9a |
pos = bytestream2_tell(&s->gb); |
75abfab6 |
for (i = 0; i < s->geotag_count; i++) {
if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
if (s->geotags[i].count == 0
|| s->geotags[i].offset + s->geotags[i].count > count) {
av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
} else { |
292850b6 |
char *ap;
bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count) |
501db2f3 |
return AVERROR_INVALIDDATA; |
292850b6 |
ap = av_malloc(s->geotags[i].count); |
75abfab6 |
if (!ap) {
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
return AVERROR(ENOMEM);
} |
292850b6 |
bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count); |
75abfab6 |
ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
s->geotags[i].val = ap;
}
}
}
break; |
3071af6c |
case TIFF_ARTIST:
ADD_METADATA(count, "artist", NULL);
break;
case TIFF_COPYRIGHT:
ADD_METADATA(count, "copyright", NULL);
break;
case TIFF_DATE:
ADD_METADATA(count, "date", NULL);
break;
case TIFF_DOCUMENT_NAME:
ADD_METADATA(count, "document_name", NULL);
break;
case TIFF_HOST_COMPUTER:
ADD_METADATA(count, "computer", NULL);
break;
case TIFF_IMAGE_DESCRIPTION:
ADD_METADATA(count, "description", NULL);
break;
case TIFF_MAKE:
ADD_METADATA(count, "make", NULL);
break;
case TIFF_MODEL:
ADD_METADATA(count, "model", NULL);
break;
case TIFF_PAGE_NAME:
ADD_METADATA(count, "page_name", NULL);
break;
case TIFF_PAGE_NUMBER:
ADD_METADATA(count, "page_number", " / ");
break;
case TIFF_SOFTWARE_NAME:
ADD_METADATA(count, "software", NULL);
break; |
762b4662 |
default: |
999ccd2d |
if (s->avctx->err_recognition & AV_EF_EXPLODE) {
av_log(s->avctx, AV_LOG_ERROR,
"Unknown or unsupported tag %d/0X%0X\n",
tag, tag);
return AVERROR_INVALIDDATA;
} |
a991b1fe |
} |
61e0e809 |
end: |
1ec83d9a |
bytestream2_seek(&s->gb, start, SEEK_SET); |
a991b1fe |
return 0;
}
static int decode_frame(AVCodecContext *avctx, |
df9b9567 |
void *data, int *got_frame, AVPacket *avpkt) |
a991b1fe |
{ |
f346b6bb |
TiffContext *const s = avctx->priv_data; |
759001c5 |
AVFrame *const p = data; |
8a7295be |
ThreadFrame frame = { .f = data }; |
5ca5d432 |
unsigned off; |
b7ba7cbd |
int le, ret, plane, planes; |
46ce9ded |
int i, j, entries, stride; |
5ca5d432 |
unsigned soff, ssize; |
108c96d5 |
uint8_t *dst; |
1ec83d9a |
GetByteContext stripsizes;
GetByteContext stripdata;
bytestream2_init(&s->gb, avpkt->data, avpkt->size); |
a991b1fe |
|
46ce9ded |
// parse image header |
b7ba7cbd |
if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
return ret;
} else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a991b1fe |
} |
46ce9ded |
s->le = le; |
8e082df0 |
// TIFF_BPP is not a required tag and defaults to 1 |
7cb5467a |
s->bppcount = s->bpp = 1; |
46ce9ded |
s->invert = 0;
s->compr = TIFF_RAW; |
a58e96be |
s->fill_order = 0; |
75abfab6 |
free_geotags(s);
|
1ec83d9a |
// Reset these offsets so we can tell if they were set this frame
s->stripsizesoff = s->strippos = 0; |
a991b1fe |
/* parse image file directory */ |
1ec83d9a |
bytestream2_seek(&s->gb, off, SEEK_SET); |
b7ba7cbd |
entries = ff_tget_short(&s->gb, le); |
292850b6 |
if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
return AVERROR_INVALIDDATA; |
f346b6bb |
for (i = 0; i < entries; i++) { |
edcc51fb |
if ((ret = tiff_decode_tag(s, p)) < 0) |
501db2f3 |
return ret; |
a991b1fe |
} |
75abfab6 |
for (i = 0; i<s->geotag_count; i++) {
const char *keyname = get_geokey_name(s->geotags[i].key);
if (!keyname) {
av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
continue;
}
if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
continue;
} |
edcc51fb |
ret = av_dict_set(avpriv_frame_get_metadatap(p), keyname, s->geotags[i].val, 0); |
75abfab6 |
if (ret<0) {
av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
return ret;
}
}
|
1ec83d9a |
if (!s->strippos && !s->stripoff) { |
108c96d5 |
av_log(avctx, AV_LOG_ERROR, "Image data is missing\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
108c96d5 |
}
/* now we have the data and may start decoding */ |
8a7295be |
if ((ret = init_image(s, &frame)) < 0) |
bbc572a2 |
return ret;
|
f346b6bb |
if (s->strips == 1 && !s->stripsize) { |
108c96d5 |
av_log(avctx, AV_LOG_WARNING, "Image data size missing\n"); |
1ec83d9a |
s->stripsize = avpkt->size - s->stripoff; |
108c96d5 |
} |
1ec83d9a |
if (s->stripsizesoff) { |
27eada28 |
if (s->stripsizesoff >= (unsigned)avpkt->size) |
1ec83d9a |
return AVERROR_INVALIDDATA;
bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
}
if (s->strippos) { |
27eada28 |
if (s->strippos >= (unsigned)avpkt->size) |
1ec83d9a |
return AVERROR_INVALIDDATA;
bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
}
|
02a325cb |
if (s->rps <= 0) {
av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
return AVERROR_INVALIDDATA;
}
|
379ad978 |
planes = s->planar ? s->bppcount : 1;
for (plane = 0; plane < planes; plane++) {
stride = p->linesize[plane]; |
7cb5467a |
dst = p->data[plane]; |
f346b6bb |
for (i = 0; i < s->height; i += s->rps) { |
1ec83d9a |
if (s->stripsizesoff) |
b7ba7cbd |
ssize = ff_tget(&stripsizes, s->sstype, s->le); |
1ec83d9a |
else |
108c96d5 |
ssize = s->stripsize;
|
1ec83d9a |
if (s->strippos) |
b7ba7cbd |
soff = ff_tget(&stripdata, s->sot, s->le); |
1ec83d9a |
else |
108c96d5 |
soff = s->stripoff; |
5ca5d432 |
|
1ec83d9a |
if (soff > avpkt->size || ssize > avpkt->size - soff) { |
5ca5d432 |
av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n"); |
b2a7b81b |
return AVERROR_INVALIDDATA; |
a4db272a |
} |
dc318505 |
if ((ret = tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize, |
999ccd2d |
FFMIN(s->rps, s->height - i))) < 0) {
if (avctx->err_recognition & AV_EF_EXPLODE)
return ret; |
108c96d5 |
break; |
999ccd2d |
} |
108c96d5 |
dst += s->rps * stride;
} |
f346b6bb |
if (s->predictor == 2) { |
7cb5467a |
dst = p->data[plane]; |
46ce9ded |
soff = s->bpp >> 3; |
8cc8adaa |
if (s->planar)
soff = FFMAX(soff / s->bppcount, 1); |
108c96d5 |
ssize = s->width * soff; |
ac627b3d |
if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE || |
8cc8adaa |
s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) { |
72381b2b |
for (i = 0; i < s->height; i++) {
for (j = soff; j < ssize; j += 2)
AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
dst += stride;
} |
ac627b3d |
} else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE || |
8cc8adaa |
s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) { |
72381b2b |
for (i = 0; i < s->height; i++) {
for (j = soff; j < ssize; j += 2)
AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
dst += stride;
}
} else { |
7432bcfe |
for (i = 0; i < s->height; i++) {
for (j = soff; j < ssize; j++) |
251345a3 |
dst[j] += dst[j - soff];
dst += stride;
} |
72381b2b |
} |
108c96d5 |
} |
a991b1fe |
|
f346b6bb |
if (s->invert) { |
379ad978 |
dst = p->data[plane]; |
7432bcfe |
for (i = 0; i < s->height; i++) { |
379ad978 |
for (j = 0; j < p->linesize[plane]; j++) |
ac627b3d |
dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j]; |
379ad978 |
dst += p->linesize[plane]; |
e2570297 |
}
} |
379ad978 |
}
|
a4b5863e |
if (s->planar && s->bppcount > 2) { |
379ad978 |
FFSWAP(uint8_t*, p->data[0], p->data[2]);
FFSWAP(int, p->linesize[0], p->linesize[2]);
FFSWAP(uint8_t*, p->data[0], p->data[1]);
FFSWAP(int, p->linesize[0], p->linesize[1]);
}
|
df9b9567 |
*got_frame = 1; |
a991b1fe |
|
1ec83d9a |
return avpkt->size; |
a991b1fe |
}
|
f346b6bb |
static av_cold int tiff_init(AVCodecContext *avctx)
{ |
a991b1fe |
TiffContext *s = avctx->priv_data;
|
46ce9ded |
s->width = 0; |
a991b1fe |
s->height = 0; |
46ce9ded |
s->avctx = avctx; |
ffc5430b |
ff_lzw_decode_open(&s->lzw); |
92799d32 |
ff_ccitt_unpack_init(); |
a991b1fe |
return 0;
}
|
98a6fff9 |
static av_cold int tiff_end(AVCodecContext *avctx) |
a991b1fe |
{ |
f346b6bb |
TiffContext *const s = avctx->priv_data; |
a991b1fe |
|
75abfab6 |
free_geotags(s);
|
ffc5430b |
ff_lzw_decode_close(&s->lzw); |
17714adb |
av_freep(&s->deinvert_buf); |
a991b1fe |
return 0;
}
|
e7e2df27 |
AVCodec ff_tiff_decoder = { |
ec6402b7 |
.name = "tiff", |
46ce9ded |
.long_name = NULL_IF_CONFIG_SMALL("TIFF image"), |
ec6402b7 |
.type = AVMEDIA_TYPE_VIDEO, |
36ef5369 |
.id = AV_CODEC_ID_TIFF, |
ec6402b7 |
.priv_data_size = sizeof(TiffContext),
.init = tiff_init,
.close = tiff_end,
.decode = decode_frame, |
8a7295be |
.init_thread_copy = ONLY_IF_THREADS_ENABLED(tiff_init),
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, |
a991b1fe |
}; |