diff options
Diffstat (limited to 'ffmpeg/libavcodec/tiff.c')
| -rw-r--r-- | ffmpeg/libavcodec/tiff.c | 1132 |
1 files changed, 0 insertions, 1132 deletions
diff --git a/ffmpeg/libavcodec/tiff.c b/ffmpeg/libavcodec/tiff.c deleted file mode 100644 index cd20967..0000000 --- a/ffmpeg/libavcodec/tiff.c +++ /dev/null @@ -1,1132 +0,0 @@ -/* - * 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 - */ - -/** - * @file - * TIFF image decoder - * @author Konstantin Shishkov - */ - -#include "config.h" -#if CONFIG_ZLIB -#include <zlib.h> -#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; - uint32_t palette[256]; - int palette_is_set; - int le; - enum TiffCompr compr; - int invert; - int planar; - int fax_opts; - int predictor; - int fill_order; - - int strips, rps, sstype; - int sot; - int stripsizesoff, stripsize, stripoff, strippos; - LZWState *lzw; - - uint8_t *deinvert_buf; - int deinvert_buf_size; - - int geotag_count; - TiffGeoTag *geotags; -} TiffContext; - -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); -} - -#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) -{ - TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key); - if(r) - return r->name; - - return NULL; -} - -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: - 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 = 15LL + 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, "%f%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: - 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) -{ - z_stream zstream = { 0 }; - int zret; - - zstream.next_in = (uint8_t *)src; - zstream.avail_in = size; - zstream.next_out = dst; - zstream.avail_out = *len; - zret = inflateInit(&zstream); - 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; -} - -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); - 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, - "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++) { - 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; - } - av_free(zbuf); - return 0; -} -#endif - - -static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride, - 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); - - if (!src2) { - av_log(s->avctx, AV_LOG_ERROR, - "Error allocating temporary buffer\n"); - return AVERROR(ENOMEM); - } - if (s->fax_opts & 2) { - avpriv_request_sample(s->avctx, "Uncompressed fax mode"); - av_free(src2); - return AVERROR_PATCHWELCOME; - } - 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); - 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; -} - -static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride, - const uint8_t *src, int size, int lines) -{ - int c, line, pixels, code, ret; - 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; - - if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) { -#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); -#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; - } - } - if (s->compr == TIFF_CCITT_RLE || - s->compr == TIFF_G3 || - s->compr == TIFF_G4) { - return tiff_unpack_fax(s, dst, stride, src, size, width, lines); - } - for (line = 0; line < lines; line++) { - if (src - ssrc > size) { - av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n"); - return AVERROR_INVALIDDATA; - } - switch (s->compr) { - case TIFF_RAW: - if (ssrc + size - src < width) - return AVERROR_INVALIDDATA; - if (!s->fill_order) { - 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++) - dst[i] = ff_reverse[src[i]]; - } - src += width; - break; - case TIFF_PACKBITS: - for (pixels = 0; pixels < width;) { - if (ssrc + size - src < 2) { - av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n"); - return AVERROR_INVALIDDATA; - } - code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++; - if (code >= 0) { - code++; - if (pixels + code > width || - ssrc + size - src < code) { - av_log(s->avctx, AV_LOG_ERROR, - "Copy went out of bounds\n"); - return AVERROR_INVALIDDATA; - } - 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 - code = (-code) + 1; - if (pixels + code > width) { - av_log(s->avctx, AV_LOG_ERROR, - "Run went out of bounds\n"); - return AVERROR_INVALIDDATA; - } - c = *src++; - 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); - if (pixels < width) { - av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n", - 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; - } - return 0; -} - -static int init_image(TiffContext *s, ThreadFrame *frame) -{ - int i, ret; - uint32_t *pal; - - switch (s->planar * 1000 + s->bpp * 10 + s->bppcount) { - case 11: - 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; - case 243: - s->avctx->pix_fmt = AV_PIX_FMT_RGB24; - break; - 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; - 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, - "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) { - ret = ff_set_dimensions(s->avctx, s->width, s->height); - if (ret < 0) - return ret; - } - 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->f->data[1], s->palette, sizeof(s->palette)); - } else { - /* make default grayscale pal */ - 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, AVFrame *frame) -{ - unsigned tag, type, count, off, value = 0; - int i, j, k, pos, start; - int ret; - uint32_t *pal; - double *dp; - - 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: - case TIFF_LONG: - value = ff_tget(&s->gb, type, s->le); - break; - case TIFF_STRING: - if (count <= 4) { - break; - } - default: - value = UINT_MAX; - } - } - - switch (tag) { - case TIFF_WIDTH: - s->width = value; - break; - case TIFF_HEIGHT: - s->height = value; - break; - case TIFF_BPP: - s->bppcount = count; - if (count > 4) { - av_log(s->avctx, AV_LOG_ERROR, - "This format is not supported (bpp=%d, %d components)\n", - s->bpp, count); - return AVERROR_INVALIDDATA; - } - if (count == 1) - s->bpp = value; - else { - switch (type) { - case TIFF_BYTE: - case TIFF_SHORT: - case TIFF_LONG: - s->bpp = 0; - 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; - } - } - 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; - } - 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; - break; - case TIFF_COMPR: - s->compr = value; - s->predictor = 0; - switch (s->compr) { - case TIFF_RAW: - case TIFF_PACKBITS: - case TIFF_LZW: - case TIFF_CCITT_RLE: - break; - case TIFF_G3: - case TIFF_G4: - s->fax_opts = 0; - break; - case TIFF_DEFLATE: - case TIFF_ADOBE_DEFLATE: -#if CONFIG_ZLIB - break; -#else - av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n"); - return AVERROR(ENOSYS); -#endif - case TIFF_JPEG: - case TIFF_NEWJPEG: - avpriv_report_missing_feature(s->avctx, "JPEG compression"); - return AVERROR_PATCHWELCOME; - default: - av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", - s->compr); - return AVERROR_INVALIDDATA; - } - break; - case TIFF_ROWSPERSTRIP: - if (type == TIFF_LONG && value == UINT_MAX) - value = s->height; - if (value < 1) { - av_log(s->avctx, AV_LOG_ERROR, - "Incorrect value of rows per strip\n"); - return AVERROR_INVALIDDATA; - } - s->rps = value; - break; - case TIFF_STRIP_OFFS: - if (count == 1) { - s->strippos = 0; - s->stripoff = value; - } else - s->strippos = off; - s->strips = count; - if (s->strips == 1) - s->rps = s->height; - s->sot = type; - if (s->strippos > bytestream2_size(&s->gb)) { - av_log(s->avctx, AV_LOG_ERROR, - "Tag referencing position outside the image\n"); - return AVERROR_INVALIDDATA; - } - break; - case TIFF_STRIP_SIZE: - if (count == 1) { - s->stripsizesoff = 0; - s->stripsize = value; - s->strips = 1; - } else { - s->stripsizesoff = off; - } - s->strips = count; - s->sstype = type; - 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; - case TIFF_INVERT: - switch (value) { - case 0: - s->invert = 1; - break; - case 1: - s->invert = 0; - break; - case 2: - case 3: - break; - default: - av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n", - value); - return AVERROR_INVALIDDATA; - } - break; - case TIFF_FILL_ORDER: - if (value < 1 || value > 2) { - av_log(s->avctx, AV_LOG_ERROR, - "Unknown FillOrder value %d, trying default one\n", value); - value = 1; - } - s->fill_order = value - 1; - break; - case TIFF_PAL: - pal = (uint32_t *) s->palette; - off = type_sizes[type]; - if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3) - return AVERROR_INVALIDDATA; - off = (type_sizes[type] - 1) << 3; - 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: - s->planar = value == 2; - break; - case TIFF_T4OPTIONS: - if (s->compr == TIFF_G3) - s->fax_opts = value; - break; - case TIFF_T6OPTIONS: - 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, - "Unknown or unsupported tag %d/0X%0X\n", - tag, tag); - 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) -{ - TiffContext *const s = avctx->priv_data; - AVFrame *const p = data; - ThreadFrame frame = { .f = data }; - unsigned off; - 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 ((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; - 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 */ - 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; - for (i = 0; i < entries; i++) { - if ((ret = tiff_decode_tag(s, p)) < 0) - return ret; - } - - 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, &frame)) < 0) - return ret; - - if (s->strips == 1 && !s->stripsize) { - av_log(avctx, AV_LOG_WARNING, "Image data size missing\n"); - 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); - } - - 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->stripsizesoff) - ssize = ff_tget(&stripsizes, s->sstype, s->le); - else - ssize = s->stripsize; - - if (s->strippos) - soff = ff_tget(&stripdata, s->sot, s->le); - else - soff = s->stripoff; - - 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, avpkt->data + soff, ssize, - FFMIN(s->rps, s->height - i))) < 0) { - if (avctx->err_recognition & AV_EF_EXPLODE) - return ret; - break; - } - dst += s->rps * stride; - } - if (s->predictor == 2) { - dst = p->data[plane]; - soff = s->bpp >> 3; - if (s->planar) - soff = FFMAX(soff / s->bppcount, 1); - ssize = s->width * soff; - 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) { - 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 avpkt->size; -} - -static av_cold int tiff_init(AVCodecContext *avctx) -{ - TiffContext *s = avctx->priv_data; - - s->width = 0; - s->height = 0; - s->avctx = avctx; - ff_lzw_decode_open(&s->lzw); - ff_ccitt_unpack_init(); - - return 0; -} - -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; -} - -AVCodec ff_tiff_decoder = { - .name = "tiff", - .long_name = NULL_IF_CONFIG_SMALL("TIFF image"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_TIFF, - .priv_data_size = sizeof(TiffContext), - .init = tiff_init, - .close = tiff_end, - .decode = decode_frame, - .init_thread_copy = ONLY_IF_THREADS_ENABLED(tiff_init), - .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, -}; |