diff options
Diffstat (limited to 'libavcodec/tiff.c')
| -rw-r--r-- | libavcodec/tiff.c | 755 |
1 files changed, 587 insertions, 168 deletions
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 7fb0e7a3a6..cbc526acc5 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -1,21 +1,20 @@ /* - * TIFF image decoder * Copyright (c) 2006 Konstantin Shishkov * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -31,17 +30,22 @@ #endif #include "libavutil/attributes.h" +#include "libavutil/avstring.h" #include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" #include "avcodec.h" +#include "bytestream.h" #include "faxcompr.h" #include "internal.h" #include "lzw.h" #include "mathops.h" #include "tiff.h" +#include "tiff_data.h" +#include "thread.h" typedef struct TiffContext { AVCodecContext *avctx; + GetByteContext gb; int width, height; unsigned int bpp, bppcount; @@ -50,46 +54,231 @@ typedef struct TiffContext { int le; enum TiffCompr compr; int invert; + int planar; int fax_opts; int predictor; int fill_order; int strips, rps, sstype; int sot; - const uint8_t *stripdata; - const uint8_t *stripsizes; - int stripsize, stripoff; + int stripsizesoff, stripsize, stripoff, strippos; LZWState *lzw; + + uint8_t *deinvert_buf; + int deinvert_buf_size; + + int geotag_count; + TiffGeoTag *geotags; } TiffContext; -static unsigned tget_short(const uint8_t **p, int le) +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); + s->geotag_count = 0; +} + +#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) { - unsigned v = le ? AV_RL16(*p) : AV_RB16(*p); - *p += 2; - return v; + 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 unsigned tget_long(const uint8_t **p, int le) +static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id) { - unsigned v = le ? AV_RL32(*p) : AV_RB32(*p); - *p += 4; - return v; + TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key); + if(r) + return r->name; + + return NULL; } -static unsigned tget(const uint8_t **p, int type, int le) +static char *get_geokey_val(int key, int val) { - switch (type) { - case TIFF_BYTE: - return *(*p)++; - case TIFF_SHORT: - return tget_short(p, le); - case TIFF_LONG: - return tget_long(p, le); + 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: + 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; + break; + case TIFF_PROJECTION_GEOKEY: + ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val)); + if(ap) return ap; + 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; + uint64_t component_len; + if (!sep) sep = ", "; + component_len = 24LL + strlen(sep); + if (count >= (INT_MAX - 1)/component_len) + return NULL; + ap = av_malloc(component_len * count + 1); + if (!ap) + return NULL; + ap0 = ap; + ap[0] = '\0'; + for (i = 0; i < count; i++) { + unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep); + if(l >= component_len) { + av_free(ap0); + return NULL; + } + ap += l; + } + ap0[strlen(ap0) - strlen(sep)] = '\0'; + return ap0; +} + +static int add_metadata(int count, int type, + const char *name, const char *sep, TiffContext *s, AVFrame *frame) +{ + switch(type) { + 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)); + default : return AVERROR_INVALIDDATA; + }; +} + +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) +{ + switch (bpp) { + 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; + case 2: + 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; + } + break; + case 4: + while (--width >= 0) { + dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF; + dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4; + } + break; default: - return UINT_MAX; + if (usePtr) { + memcpy(dst + offset, src, width); + } else { + memset(dst + offset, c, width); + } } } +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; +} + #if CONFIG_ZLIB static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src, int size) @@ -97,7 +286,7 @@ static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src, z_stream zstream = { 0 }; int zret; - zstream.next_in = src; + zstream.next_in = (uint8_t *)src; zstream.avail_in = size; zstream.next_out = dst; zstream.avail_out = *len; @@ -123,6 +312,13 @@ static int tiff_unpack_zlib(TiffContext *s, uint8_t *dst, int stride, zbuf = av_malloc(outlen); if (!zbuf) return AVERROR(ENOMEM); + if (s->fill_order) { + if ((ret = deinvert_buffer(s, src, size)) < 0) { + av_free(zbuf); + return ret; + } + src = s->deinvert_buf; + } ret = tiff_uncompress(zbuf, &outlen, src, size); if (ret != Z_OK) { av_log(s->avctx, AV_LOG_ERROR, @@ -133,7 +329,11 @@ static int tiff_unpack_zlib(TiffContext *s, uint8_t *dst, int stride, } src = zbuf; for (line = 0; line < lines; line++) { - memcpy(dst, src, width); + 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); + } dst += stride; src += width; } @@ -144,9 +344,10 @@ static int tiff_unpack_zlib(TiffContext *s, uint8_t *dst, int stride, static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride, - const uint8_t *src, int size, int lines) + const uint8_t *src, int size, int width, int lines) { int i, ret = 0; + int line; uint8_t *src2 = av_malloc((unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE); @@ -169,6 +370,11 @@ static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride, 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); + 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; + } av_free(src2); return ret; } @@ -180,6 +386,9 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, const uint8_t *ssrc = src; int width = ((s->width * s->bpp) + 7) >> 3; + if (s->planar) + width /= s->bppcount; + if (size <= 0) return AVERROR_INVALIDDATA; @@ -194,6 +403,14 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, #endif } if (s->compr == TIFF_LZW) { + if (s->fill_order) { + if ((ret = deinvert_buffer(s, src, size)) < 0) + return ret; + ssrc = src = s->deinvert_buf; + } + if (size > 1 && !src[0] && (src[1]&1)) { + av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n"); + } if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) { av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n"); return ret; @@ -202,7 +419,7 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4) { - return tiff_unpack_fax(s, dst, stride, src, size, lines); + return tiff_unpack_fax(s, dst, stride, src, size, width, lines); } for (line = 0; line < lines; line++) { if (src - ssrc > size) { @@ -214,7 +431,8 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, if (ssrc + size - src < width) return AVERROR_INVALIDDATA; if (!s->fill_order) { - memcpy(dst, src, width); + horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), + dst, 1, src, 0, width, 0); } else { int i; for (i = 0; i < width; i++) @@ -224,9 +442,11 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, break; case TIFF_PACKBITS: for (pixels = 0; pixels < width;) { - if (ssrc + size - src < 2) + if (ssrc + size - src < 2) { + av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n"); return AVERROR_INVALIDDATA; - code = (int8_t) *src++; + } + code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++; if (code >= 0) { code++; if (pixels + code > width || @@ -235,7 +455,8 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, "Copy went out of bounds\n"); return AVERROR_INVALIDDATA; } - memcpy(dst + pixels, src, code); + horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), + dst, 1, src, 0, code, pixels); src += code; pixels += code; } else if (code != -128) { // -127..-1 @@ -246,10 +467,16 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, return AVERROR_INVALIDDATA; } c = *src++; - memset(dst + pixels, c, code); + horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), + dst, 0, NULL, c, code, pixels); pixels += code; } } + if (s->fill_order) { + int i; + for (i = 0; i < width; i++) + dst[i] = ff_reverse[dst[i]]; + } break; case TIFF_LZW: pixels = ff_lzw_decode(s->lzw, dst, width); @@ -258,6 +485,8 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, pixels, width); return AVERROR_INVALIDDATA; } + if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) + horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0); break; } dst += stride; @@ -265,15 +494,19 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, return 0; } -static int init_image(TiffContext *s, AVFrame *frame) +static int init_image(TiffContext *s, ThreadFrame *frame) { int i, ret; uint32_t *pal; - switch (s->bpp * 10 + s->bppcount) { + switch (s->planar * 1000 + s->bpp * 10 + s->bppcount) { case 11: - s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK; - break; + if (!s->palette_is_set) { + s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK; + break; + } + case 21: + case 41: case 81: s->avctx->pix_fmt = AV_PIX_FMT_PAL8; break; @@ -283,11 +516,29 @@ static int init_image(TiffContext *s, AVFrame *frame) case 161: s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE; break; + case 162: + s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A; + break; case 324: s->avctx->pix_fmt = AV_PIX_FMT_RGBA; break; case 483: - s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE; + s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE; + break; + case 644: + 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; break; default: av_log(s->avctx, AV_LOG_ERROR, @@ -300,76 +551,49 @@ static int init_image(TiffContext *s, AVFrame *frame) if (ret < 0) return ret; } - if ((ret = ff_get_buffer(s->avctx, frame, 0)) < 0) { - av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0) return ret; - } if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) { if (s->palette_is_set) { - memcpy(frame->data[1], s->palette, sizeof(s->palette)); + memcpy(frame->f->data[1], s->palette, sizeof(s->palette)); } else { /* make default grayscale pal */ - pal = (uint32_t *) frame->data[1]; - for (i = 0; i < 256; i++) - pal[i] = i * 0x010101; + pal = (uint32_t *) frame->f->data[1]; + for (i = 0; i < 1<<s->bpp; i++) + pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101; } } return 0; } -static int tiff_decode_tag(TiffContext *s, const uint8_t *start, - const uint8_t *buf, const uint8_t *end_buf) +static int tiff_decode_tag(TiffContext *s, AVFrame *frame) { unsigned tag, type, count, off, value = 0; - int i, j; + int i, j, k, pos, start; + int ret; uint32_t *pal; - const uint8_t *rp, *gp, *bp; - - if (end_buf - buf < 12) - return AVERROR_INVALIDDATA; - tag = tget_short(&buf, s->le); - type = tget_short(&buf, s->le); - count = tget_long(&buf, s->le); - off = tget_long(&buf, s->le); + double *dp; - if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) { - av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n", - type); - return 0; + ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start); + if (ret < 0) { + goto end; } + off = bytestream2_tell(&s->gb); if (count == 1) { switch (type) { case TIFF_BYTE: case TIFF_SHORT: - buf -= 4; - value = tget(&buf, type, s->le); - buf = NULL; - break; case TIFF_LONG: - value = off; - buf = NULL; + value = ff_tget(&s->gb, type, s->le); break; case TIFF_STRING: if (count <= 4) { - buf -= 4; break; } default: value = UINT_MAX; - buf = start + off; } - } else { - if (count <= 4 && type_sizes[type] * count <= 4) - buf -= 4; - else - buf = start + off; - } - - if (buf && (buf < start || buf > end_buf)) { - av_log(s->avctx, AV_LOG_ERROR, - "Tag referencing position outside the image\n"); - return AVERROR_INVALIDDATA; } switch (tag) { @@ -392,14 +616,13 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, else { switch (type) { case TIFF_BYTE: - s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) + - ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF); - break; case TIFF_SHORT: case TIFF_LONG: s->bpp = 0; - for (i = 0; i < count && buf < end_buf; i++) - s->bpp += tget(&buf, type, s->le); + if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count) + return AVERROR_INVALIDDATA; + for (i = 0; i < count; i++) + s->bpp += ff_tget(&s->gb, type, s->le); break; default: s->bpp = -1; @@ -412,6 +635,11 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, "Samples per pixel requires a single value, many provided\n"); return AVERROR_INVALIDDATA; } + if (value > 4U) { + av_log(s->avctx, AV_LOG_ERROR, + "Samples per pixel %d is too large\n", value); + return AVERROR_INVALIDDATA; + } if (s->bppcount == 1) s->bpp *= value; s->bppcount = value; @@ -449,7 +677,7 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, break; case TIFF_ROWSPERSTRIP: if (type == TIFF_LONG && value == UINT_MAX) - value = s->avctx->height; + value = s->height; if (value < 1) { av_log(s->avctx, AV_LOG_ERROR, "Incorrect value of rows per strip\n"); @@ -459,15 +687,15 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, break; case TIFF_STRIP_OFFS: if (count == 1) { - s->stripdata = NULL; + s->strippos = 0; s->stripoff = value; } else - s->stripdata = start + off; + s->strippos = off; s->strips = count; if (s->strips == 1) s->rps = s->height; s->sot = type; - if (s->stripdata > end_buf) { + if (s->strippos > bytestream2_size(&s->gb)) { av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n"); return AVERROR_INVALIDDATA; @@ -475,20 +703,27 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, break; case TIFF_STRIP_SIZE: if (count == 1) { - s->stripsizes = NULL; + s->stripsizesoff = 0; s->stripsize = value; s->strips = 1; } else { - s->stripsizes = start + off; + s->stripsizesoff = off; } s->strips = count; s->sstype = type; - if (s->stripsizes > end_buf) { + if (s->stripsizesoff > bytestream2_size(&s->gb)) { av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n"); return AVERROR_INVALIDDATA; } break; + 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; case TIFF_PREDICTOR: s->predictor = value; break; @@ -520,25 +755,21 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, case TIFF_PAL: pal = (uint32_t *) s->palette; off = type_sizes[type]; - if (count / 3 > 256 || end_buf - buf < count / 3 * off * 3) + if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3) return AVERROR_INVALIDDATA; - rp = buf; - gp = buf + count / 3 * off; - bp = buf + count / 3 * off * 2; off = (type_sizes[type] - 1) << 3; - for (i = 0; i < count / 3; i++) { - j = (tget(&rp, type, s->le) >> off) << 16; - j |= (tget(&gp, type, s->le) >> off) << 8; - j |= tget(&bp, type, s->le) >> off; - pal[i] = j; + for (k = 2; k >= 0; k--) { + for (i = 0; i < count / 3; i++) { + if (k == 2) + pal[i] = 0xFFU << 24; + j = (ff_tget(&s->gb, type, s->le) >> off) << (k * 8); + pal[i] |= j; + } } s->palette_is_set = 1; break; case TIFF_PLANAR: - if (value == 2) { - avpriv_report_missing_feature(s->avctx, "Planar format"); - return AVERROR_PATCHWELCOME; - } + s->planar = value == 2; break; case TIFF_T4OPTIONS: if (s->compr == TIFF_G3) @@ -548,6 +779,137 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, if (s->compr == TIFF_G4) s->fax_opts = value; break; +#define ADD_METADATA(count, name, sep)\ + if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\ + av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\ + goto end;\ + } + 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", "."); + s->geotag_count = ff_tget_short(&s->gb, s->le); + 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"); + } + if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4) { + s->geotag_count = 0; + return -1; + } + s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count); + if (!s->geotags) { + av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); + s->geotag_count = 0; + goto end; + } + for (i = 0; i < s->geotag_count; i++) { + 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); + + if (!s->geotags[i].type) + s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le)); + else + s->geotags[i].offset = ff_tget_short(&s->gb, s->le); + } + break; + case TIFF_GEO_DOUBLE_PARAMS: + if (count >= INT_MAX / sizeof(int64_t)) + return AVERROR_INVALIDDATA; + if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t)) + return AVERROR_INVALIDDATA; + dp = av_malloc(count * sizeof(double)); + if (!dp) { + av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); + goto end; + } + for (i = 0; i < count; i++) + dp[i] = ff_tget_double(&s->gb, s->le); + 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: + pos = bytestream2_tell(&s->gb); + 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 { + char *ap; + + bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET); + if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count) + return AVERROR_INVALIDDATA; + ap = av_malloc(s->geotags[i].count); + if (!ap) { + av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); + return AVERROR(ENOMEM); + } + bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count); + ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte + s->geotags[i].val = ap; + } + } + } + break; + 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; default: if (s->avctx->err_recognition & AV_EF_EXPLODE) { av_log(s->avctx, AV_LOG_ERROR, @@ -556,96 +918,121 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, return AVERROR_INVALIDDATA; } } +end: + bytestream2_seek(&s->gb, start, SEEK_SET); return 0; } static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; TiffContext *const s = avctx->priv_data; AVFrame *const p = data; - const uint8_t *orig_buf = buf, *end_buf = buf + buf_size; + ThreadFrame frame = { .f = data }; unsigned off; - int id, le, ret; + int le, ret, plane, planes; int i, j, entries, stride; unsigned soff, ssize; uint8_t *dst; + GetByteContext stripsizes; + GetByteContext stripdata; + + bytestream2_init(&s->gb, avpkt->data, avpkt->size); // parse image header - if (end_buf - buf < 8) - return AVERROR_INVALIDDATA; - id = AV_RL16(buf); - buf += 2; - if (id == 0x4949) - le = 1; - else if (id == 0x4D4D) - le = 0; - else { - av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n"); + 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"); return AVERROR_INVALIDDATA; } s->le = le; + // TIFF_BPP is not a required tag and defaults to 1 + s->bppcount = s->bpp = 1; s->invert = 0; s->compr = TIFF_RAW; s->fill_order = 0; - // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number - // that further identifies the file as a TIFF file" - if (tget_short(&buf, le) != 42) { - av_log(avctx, AV_LOG_ERROR, - "The answer to life, universe and everything is not correct!\n"); - return AVERROR_INVALIDDATA; - } - // Reset these pointers so we can tell if they were set this frame - s->stripsizes = s->stripdata = NULL; + free_geotags(s); + + // Reset these offsets so we can tell if they were set this frame + s->stripsizesoff = s->strippos = 0; /* parse image file directory */ - off = tget_long(&buf, le); - if (off >= UINT_MAX - 14 || end_buf - orig_buf < off + 14) { - av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n"); + bytestream2_seek(&s->gb, off, SEEK_SET); + entries = ff_tget_short(&s->gb, le); + if (bytestream2_get_bytes_left(&s->gb) < entries * 12) return AVERROR_INVALIDDATA; - } - buf = orig_buf + off; - entries = tget_short(&buf, le); for (i = 0; i < entries; i++) { - if ((ret = tiff_decode_tag(s, orig_buf, buf, end_buf)) < 0) + if ((ret = tiff_decode_tag(s, p)) < 0) return ret; - buf += 12; } - if (!s->stripdata && !s->stripoff) { + + 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; + } + ret = av_dict_set(avpriv_frame_get_metadatap(p), keyname, s->geotags[i].val, 0); + if (ret<0) { + av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname); + return ret; + } + } + + if (!s->strippos && !s->stripoff) { av_log(avctx, AV_LOG_ERROR, "Image data is missing\n"); return AVERROR_INVALIDDATA; } /* now we have the data and may start decoding */ - if ((ret = init_image(s, p)) < 0) + if ((ret = init_image(s, &frame)) < 0) return ret; if (s->strips == 1 && !s->stripsize) { av_log(avctx, AV_LOG_WARNING, "Image data size missing\n"); - s->stripsize = buf_size - s->stripoff; + s->stripsize = avpkt->size - s->stripoff; + } + + if (s->stripsizesoff) { + if (s->stripsizesoff >= (unsigned)avpkt->size) + return AVERROR_INVALIDDATA; + bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff); + } + if (s->strippos) { + if (s->strippos >= (unsigned)avpkt->size) + return AVERROR_INVALIDDATA; + bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos); } - stride = p->linesize[0]; - dst = p->data[0]; + + if (s->rps <= 0) { + av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps); + return AVERROR_INVALIDDATA; + } + + planes = s->planar ? s->bppcount : 1; + for (plane = 0; plane < planes; plane++) { + stride = p->linesize[plane]; + dst = p->data[plane]; for (i = 0; i < s->height; i += s->rps) { - if (s->stripsizes) { - if (s->stripsizes >= end_buf) - return AVERROR_INVALIDDATA; - ssize = tget(&s->stripsizes, s->sstype, s->le); - } else + if (s->stripsizesoff) + ssize = ff_tget(&stripsizes, s->sstype, s->le); + else ssize = s->stripsize; - if (s->stripdata) { - if (s->stripdata >= end_buf) - return AVERROR_INVALIDDATA; - soff = tget(&s->stripdata, s->sot, s->le); - } else + if (s->strippos) + soff = ff_tget(&stripdata, s->sot, s->le); + else soff = s->stripoff; - if (soff > buf_size || ssize > buf_size - soff) { + if (soff > avpkt->size || ssize > avpkt->size - soff) { av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n"); return AVERROR_INVALIDDATA; } - if ((ret = tiff_unpack_strip(s, dst, stride, orig_buf + soff, ssize, + if ((ret = tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize, FFMIN(s->rps, s->height - i))) < 0) { if (avctx->err_recognition & AV_EF_EXPLODE) return ret; @@ -654,30 +1041,58 @@ static int decode_frame(AVCodecContext *avctx, dst += s->rps * stride; } if (s->predictor == 2) { - dst = p->data[0]; + dst = p->data[plane]; soff = s->bpp >> 3; + if (s->planar) + soff = FFMAX(soff / s->bppcount, 1); ssize = s->width * soff; - for (i = 0; i < s->height; i++) { - for (j = soff; j < ssize; j++) - dst[j] += dst[j - soff]; - dst += stride; + if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE || + s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE || + s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE || + s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) { + 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; + } + } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE || + s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE || + s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE || + s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) { + 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 { + for (i = 0; i < s->height; i++) { + for (j = soff; j < ssize; j++) + dst[j] += dst[j - soff]; + dst += stride; + } } } if (s->invert) { - uint8_t *src; - int j; - - src = p->data[0]; - for (j = 0; j < s->height; j++) { - for (i = 0; i < p->linesize[0]; i++) - src[i] = 255 - src[i]; - src += p->linesize[0]; + dst = p->data[plane]; + for (i = 0; i < s->height; i++) { + for (j = 0; j < p->linesize[plane]; j++) + dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j]; + dst += p->linesize[plane]; } } + } + + if (s->planar && s->bppcount > 2) { + 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]); + } + *got_frame = 1; - return buf_size; + return avpkt->size; } static av_cold int tiff_init(AVCodecContext *avctx) @@ -697,7 +1112,10 @@ static av_cold int tiff_end(AVCodecContext *avctx) { TiffContext *const s = avctx->priv_data; + free_geotags(s); + ff_lzw_decode_close(&s->lzw); + av_freep(&s->deinvert_buf); return 0; } @@ -710,5 +1128,6 @@ AVCodec ff_tiff_decoder = { .init = tiff_init, .close = tiff_end, .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, + .init_thread_copy = ONLY_IF_THREADS_ENABLED(tiff_init), + .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, }; |