/* * 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 #if CONFIG_LZMA #define LZMA_API_STATIC #include <lzma.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; enum TiffPhotometric photometric; int planar; int subsampling[2]; int fax_opts; int predictor; int fill_order; uint32_t res[4]; int strips, rps, sstype; int sot; int stripsizesoff, stripsize, stripoff, strippos; LZWState *lzw; uint8_t *deinvert_buf; int deinvert_buf_size; uint8_t *yuv_line; unsigned int yuv_line_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); 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) { 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 = 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, 0, 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; } static void unpack_yuv(TiffContext *s, AVFrame *p, const uint8_t *src, int lnum) { int i, j, k; int w = (s->width - 1) / s->subsampling[0] + 1; uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]]; uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]]; if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) { for (i = 0; i < w; i++) { for (j = 0; j < s->subsampling[1]; j++) for (k = 0; k < s->subsampling[0]; k++) p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] + FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++; *pu++ = *src++; *pv++ = *src++; } }else{ for (i = 0; i < w; i++) { for (j = 0; j < s->subsampling[1]; j++) for (k = 0; k < s->subsampling[0]; k++) p->data[0][(lnum + j) * p->linesize[0] + i * s->subsampling[0] + k] = *src++; *pu++ = *src++; *pv++ = *src++; } } } #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, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int width, int lines, int strip_start, int is_yuv) { 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); } if (is_yuv) { unpack_yuv(s, p, dst, strip_start + line); line += s->subsampling[1] - 1; } dst += stride; src += width; } av_free(zbuf); return 0; } #endif #if CONFIG_LZMA static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src, int size) { lzma_stream stream = LZMA_STREAM_INIT; lzma_ret ret; stream.next_in = (uint8_t *)src; stream.avail_in = size; stream.next_out = dst; stream.avail_out = *len; ret = lzma_stream_decoder(&stream, UINT64_MAX, 0); if (ret != LZMA_OK) { av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret); return ret; } ret = lzma_code(&stream, LZMA_RUN); lzma_end(&stream); *len = stream.total_out; return ret == LZMA_STREAM_END ? LZMA_OK : ret; } static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int width, int lines, int strip_start, int is_yuv) { uint64_t outlen = width * lines; int ret, line; uint8_t *buf = av_malloc(outlen); if (!buf) return AVERROR(ENOMEM); if (s->fill_order) { if ((ret = deinvert_buffer(s, src, size)) < 0) { av_free(buf); return ret; } src = s->deinvert_buf; } ret = tiff_uncompress_lzma(buf, &outlen, src, size); if (ret != LZMA_OK) { av_log(s->avctx, AV_LOG_ERROR, "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen, (uint64_t)width * lines, ret); av_free(buf); return AVERROR_UNKNOWN; } src = buf; 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); } if (is_yuv) { unpack_yuv(s, p, dst, strip_start + line); line += s->subsampling[1] - 1; } dst += stride; src += width; } av_free(buf); 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 + AV_INPUT_BUFFER_PADDING_SIZE); if (!src2) { av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); return AVERROR(ENOMEM); } 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, AV_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, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int strip_start, int lines) { PutByteContext pb; int c, line, pixels, code, ret; const uint8_t *ssrc = src; int width = ((s->width * s->bpp) + 7) >> 3; const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format); int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) && (desc->flags & AV_PIX_FMT_FLAG_PLANAR) && desc->nb_components >= 3; if (s->planar) width /= s->bppcount; if (size <= 0) return AVERROR_INVALIDDATA; if (is_yuv) { int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp * s->subsampling[0] * s->subsampling[1] + 7) >> 3; av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row); if (s->yuv_line == NULL) { av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n"); return AVERROR(ENOMEM); } dst = s->yuv_line; stride = 0; width = (s->width - 1) / s->subsampling[0] + 1; width = width * s->subsampling[0] * s->subsampling[1] + 2*width; av_assert0(width <= bytes_per_row); av_assert0(s->bpp == 24); } if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) { #if CONFIG_ZLIB return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines, strip_start, is_yuv); #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_LZMA) { #if CONFIG_LZMA return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines, strip_start, is_yuv); #else av_log(s->avctx, AV_LOG_ERROR, "LZMA support not enabled\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; } for (line = 0; line < lines; line++) { 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); if (is_yuv) { unpack_yuv(s, p, dst, strip_start + line); line += s->subsampling[1] - 1; } dst += stride; } return 0; } if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4) { if (is_yuv) return AVERROR_INVALIDDATA; return tiff_unpack_fax(s, dst, stride, src, size, width, lines); } bytestream2_init(&s->gb, src, size); bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * 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; } if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb)) break; bytestream2_seek_p(&pb, stride * line, SEEK_SET); 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; } if (is_yuv) { unpack_yuv(s, p, dst, strip_start + line); line += s->subsampling[1] - 1; } dst += stride; } return 0; } static int init_image(TiffContext *s, ThreadFrame *frame) { int ret; int create_gray_palette = 0; // make sure there is no aliasing in the following switch if (s->bpp >= 100 || s->bppcount >= 10) { av_log(s->avctx, AV_LOG_ERROR, "Unsupported image parameters: bpp=%d, bppcount=%d\n", s->bpp, s->bppcount); return AVERROR_INVALIDDATA; } 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: s->avctx->pix_fmt = AV_PIX_FMT_PAL8; if (!s->palette_is_set) { create_gray_palette = 1; } break; case 81: s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8; break; case 243: if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) { if (s->subsampling[0] == 1 && s->subsampling[1] == 1) { s->avctx->pix_fmt = AV_PIX_FMT_YUV444P; } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) { s->avctx->pix_fmt = AV_PIX_FMT_YUV422P; } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) { s->avctx->pix_fmt = AV_PIX_FMT_YUV411P; } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) { s->avctx->pix_fmt = AV_PIX_FMT_YUV440P; } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) { s->avctx->pix_fmt = AV_PIX_FMT_YUV420P; } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) { s->avctx->pix_fmt = AV_PIX_FMT_YUV410P; } else { av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n"); return AVERROR_PATCHWELCOME; } } else 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_YA8; break; case 322: s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE; 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->photometric == TIFF_PHOTOMETRIC_YCBCR) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt); if((desc->flags & AV_PIX_FMT_FLAG_RGB) || !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) || desc->nb_components < 3) { av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n"); 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 (!create_gray_palette) memcpy(frame->f->data[1], s->palette, sizeof(s->palette)); else { /* make default grayscale pal */ int i; uint32_t *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 void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den) { int offset = tag == TIFF_YRES ? 2 : 0; s->res[offset++] = num; s->res[offset] = den; if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den, s->res[2] * (uint64_t)s->res[1], s->res[0] * (uint64_t)s->res[3], INT32_MAX); } static int tiff_decode_tag(TiffContext *s, AVFrame *frame) { unsigned tag, type, count, off, value = 0, value2 = 0; int i, start; int pos; int ret; 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_RATIONAL: value = ff_tget(&s->gb, TIFF_LONG, s->le); value2 = ff_tget(&s->gb, TIFF_LONG, 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: if (count > 4U) { av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%d, %d components)\n", value, count); return AVERROR_INVALIDDATA; } s->bppcount = count; 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; case TIFF_LZMA: #if CONFIG_LZMA break; #else av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n"); return AVERROR(ENOSYS); #endif default: av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", s->compr); return AVERROR_INVALIDDATA; } break; case TIFF_ROWSPERSTRIP: if (!value || (type == TIFF_LONG && value == UINT_MAX)) value = s->height; s->rps = FFMIN(value, s->height); 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; 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; break; case TIFF_XRES: case TIFF_YRES: set_sar(s, tag, value, value2); 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_PHOTOMETRIC: switch (value) { case TIFF_PHOTOMETRIC_WHITE_IS_ZERO: case TIFF_PHOTOMETRIC_BLACK_IS_ZERO: case TIFF_PHOTOMETRIC_RGB: case TIFF_PHOTOMETRIC_PALETTE: case TIFF_PHOTOMETRIC_YCBCR: s->photometric = value; break; case TIFF_PHOTOMETRIC_ALPHA_MASK: case TIFF_PHOTOMETRIC_SEPARATED: case TIFF_PHOTOMETRIC_CIE_LAB: case TIFF_PHOTOMETRIC_ICC_LAB: case TIFF_PHOTOMETRIC_ITU_LAB: case TIFF_PHOTOMETRIC_CFA: case TIFF_PHOTOMETRIC_LOG_L: case TIFF_PHOTOMETRIC_LOG_LUV: case TIFF_PHOTOMETRIC_LINEAR_RAW: avpriv_report_missing_feature(s->avctx, "PhotometricInterpretation 0x%04X", value); return AVERROR_PATCHWELCOME; default: av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is " "unknown\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: { GetByteContext pal_gb[3]; off = type_sizes[type]; if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3) return AVERROR_INVALIDDATA; pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb; bytestream2_skip(&pal_gb[1], count / 3 * off); bytestream2_skip(&pal_gb[2], count / 3 * off * 2); off = (type_sizes[type] - 1) << 3; for (i = 0; i < count / 3; i++) { uint32_t p = 0xFF000000; p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16; p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8; p |= ff_tget(&pal_gb[2], type, s->le) >> off; s->palette[i] = p; } s->palette_is_set = 1; break; } case TIFF_PLANAR: s->planar = value == 2; break; case TIFF_YCBCR_SUBSAMPLING: if (count != 2) { av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n"); return AVERROR_INVALIDDATA; } for (i = 0; i < count; i++) { s->subsampling[i] = ff_tget(&s->gb, type, s->le); if (s->subsampling[i] <= 0) { av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]); return AVERROR_INVALIDDATA; } } 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_array(s->geotag_count, sizeof(TiffGeoTag)); 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_array(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: if (s->bpp > 64U) { av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%d, %d components)\n", s->bpp, count); s->bpp = 0; return AVERROR_INVALIDDATA; } 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->photometric = TIFF_PHOTOMETRIC_NONE; 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 || s->rps % s->subsampling[1]) { 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, le); else ssize = s->stripsize; if (s->strippos) soff = ff_tget(&stripdata, s->sot, 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, p, dst, stride, avpkt->data + soff, ssize, i, 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) { if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) { av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported"); return AVERROR_PATCHWELCOME; } 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_GRAY16LE || s->avctx->pix_fmt == AV_PIX_FMT_YA16LE || 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_GRAY16BE || s->avctx->pix_fmt == AV_PIX_FMT_YA16BE || 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->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) { dst = p->data[plane]; for (i = 0; i < s->height; i++) { for (j = 0; j < stride; j++) dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j]; dst += stride; } } } 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->subsampling[0] = s->subsampling[1] = 1; 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 = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS, };