/* * 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/error.h" #include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" #include "libavutil/opt.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 "mjpegdec.h" #include "thread.h" #include "get_bits.h" typedef struct TiffContext { AVClass *class; AVCodecContext *avctx; GetByteContext gb; /* JPEG decoding for DNG */ AVCodecContext *avctx_mjpeg; // wrapper context for MJPEG AVFrame *jpgframe; // decoded JPEG tile int get_subimage; uint16_t get_page; int get_thumbnail; enum TiffType tiff_type; 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 is_thumbnail; unsigned last_tag; int is_bayer; uint8_t pattern[4]; unsigned black_level; unsigned white_level; uint16_t dng_lut[65536]; uint32_t sub_ifd; uint16_t cur_page; int strips, rps, sstype; int sot; int stripsizesoff, stripsize, stripoff, strippos; LZWState *lzw; /* Tile support */ int is_tiled; int tile_byte_counts_offset, tile_offsets_offset; int tile_width, tile_length; int tile_count; int is_jpeg; uint8_t *deinvert_buf; int deinvert_buf_size; uint8_t *yuv_line; unsigned int yuv_line_size; uint8_t *fax_buffer; unsigned int fax_buffer_size; int geotag_count; TiffGeoTag *geotags; } TiffContext; static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) { if (s->tiff_type < tiff_type) // Prioritize higher-valued entries s->tiff_type = tiff_type; } 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, &frame->metadata); case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata); case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata); default : return AVERROR_INVALIDDATA; }; } static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int width, int height, int is_single_comp, int is_u16); static void av_always_inline horizontal_fill(TiffContext *s, 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; case 10: case 12: case 14: { uint16_t *dst16 = (uint16_t *)dst; int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG); uint8_t shift = is_dng ? 0 : 16 - bpp; GetBitContext gb; init_get_bits8(&gb, src, width); for (int i = 0; i < s->width; i++) { dst16[i] = get_bits(&gb, bpp) << shift; } } 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_gray(TiffContext *s, AVFrame *p, const uint8_t *src, int lnum, int width, int bpp) { GetBitContext gb; uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]); init_get_bits8(&gb, src, width); for (int i = 0; i < s->width; i++) { dst[i] = get_bits(&gb, bpp); } } 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 = 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, 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 * (uint64_t)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, 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_fast_padded_malloc(&s->fax_buffer, &s->fax_buffer_size, size); src2 = s->fax_buffer; 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, s->bpp, dst, 1, dst, 0, width, 0); dst += stride; } return ret; } static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame); 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; int is_dng; 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->is_bayer) { av_assert0(width == (s->bpp * s->width + 7) >> 3); } if (p->format == AV_PIX_FMT_GRAY12) { av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width); 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; } 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, s->bpp, dst, 1, dst, 0, width, 0); if (is_yuv) { unpack_yuv(s, p, dst, strip_start + line); line += s->subsampling[1] - 1; } else if (p->format == AV_PIX_FMT_GRAY12) { unpack_gray(s, p, dst, strip_start + line, width, s->bpp); } dst += stride; } return 0; } if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4) { if (is_yuv || p->format == AV_PIX_FMT_GRAY12) 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)); is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG); /* Decode JPEG-encoded DNGs with strips */ if (s->compr == TIFF_NEWJPEG && is_dng) { if (s->strips > 1) { av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n"); return AVERROR_PATCHWELCOME; } if ((ret = dng_decode_strip(s->avctx, p)) < 0) return ret; return 0; } if (is_dng && stride == 0) return AVERROR_INVALIDDATA; 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, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer), dst, 1, src, 0, width, 0); } else { int i; for (i = 0; i < width; i++) dst[i] = ff_reverse[src[i]]; } /* Color processing for DNG images with uncompressed strips (non-tiled) */ if (is_dng) { int is_u16, pixel_size_bytes, pixel_size_bits, elements; is_u16 = (s->bpp / s->bppcount > 8); pixel_size_bits = (is_u16 ? 16 : 8); pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t)); elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp av_assert0 (elements * pixel_size_bytes <= FFABS(stride)); dng_blit(s, dst, 0, // no stride, only 1 line dst, 0, // no stride, only 1 line elements, 1, 0, // single-component variation is only preset in JPEG-encoded DNGs is_u16); } 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, 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, 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; } else if (p->format == AV_PIX_FMT_GRAY12) { unpack_gray(s, p, dst, strip_start + line, width, s->bpp); } dst += stride; } return 0; } /** * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5) */ static uint16_t av_always_inline dng_process_color16(uint16_t value, const uint16_t *lut, uint16_t black_level, float scale_factor) { float value_norm; // Lookup table lookup if (lut) value = lut[value]; // Black level subtraction value = av_clip_uint16_c((unsigned)value - black_level); // Color scaling value_norm = (float)value * scale_factor; value = av_clip_uint16_c(value_norm * 65535); return value; } static uint16_t av_always_inline dng_process_color8(uint16_t value, const uint16_t *lut, uint16_t black_level, float scale_factor) { return dng_process_color16(value, lut, black_level, scale_factor) >> 8; } static void dng_blit(TiffContext *s, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int width, int height, int is_single_comp, int is_u16) { int line, col; float scale_factor; scale_factor = 1.0f / (s->white_level - s->black_level); if (is_single_comp) { if (!is_u16) return; /* <= 8bpp unsupported */ /* Image is double the width and half the height we need, each row comprises 2 rows of the output (split vertically in the middle). */ for (line = 0; line < height / 2; line++) { uint16_t *dst_u16 = (uint16_t *)dst; uint16_t *src_u16 = (uint16_t *)src; /* Blit first half of input row row to initial row of output */ for (col = 0; col < width; col++) *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor); /* Advance the destination pointer by a row (source pointer remains in the same place) */ dst += dst_stride * sizeof(uint16_t); dst_u16 = (uint16_t *)dst; /* Blit second half of input row row to next row of output */ for (col = 0; col < width; col++) *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor); dst += dst_stride * sizeof(uint16_t); src += src_stride * sizeof(uint16_t); } } else { /* Input and output image are the same size and the MJpeg decoder has done per-component deinterleaving, so blitting here is straightforward. */ if (is_u16) { for (line = 0; line < height; line++) { uint16_t *dst_u16 = (uint16_t *)dst; uint16_t *src_u16 = (uint16_t *)src; for (col = 0; col < width; col++) *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor); dst += dst_stride * sizeof(uint16_t); src += src_stride * sizeof(uint16_t); } } else { for (line = 0; line < height; line++) { uint8_t *dst_u8 = dst; const uint8_t *src_u8 = src; for (col = 0; col < width; col++) *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut, s->black_level, scale_factor); dst += dst_stride; src += src_stride; } } } } static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame, int tile_byte_count, int dst_x, int dst_y, int w, int h) { TiffContext *s = avctx->priv_data; AVPacket jpkt; uint8_t *dst_data, *src_data; uint32_t dst_offset; /* offset from dst buffer in pixels */ int is_single_comp, is_u16, pixel_size; int ret; if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb)) return AVERROR_INVALIDDATA; /* Prepare a packet and send to the MJPEG decoder */ av_init_packet(&jpkt); jpkt.data = (uint8_t*)s->gb.buffer; jpkt.size = tile_byte_count; if (s->is_bayer) { MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data; /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded image or not from its own data (and we need that information when decoding it). */ mjpegdecctx->bayer = 1; } ret = avcodec_send_packet(s->avctx_mjpeg, &jpkt); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n"); return ret; } ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret)); /* Normally skip, error if explode */ if (avctx->err_recognition & AV_EF_EXPLODE) return AVERROR_INVALIDDATA; else return 0; } is_u16 = (s->bpp > 8); /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */ if (s->jpgframe->width != s->avctx_mjpeg->width || s->jpgframe->height != s->avctx_mjpeg->height || s->jpgframe->format != s->avctx_mjpeg->pix_fmt) return AVERROR_INVALIDDATA; /* See dng_blit for explanation */ if (s->avctx_mjpeg->width == w * 2 && s->avctx_mjpeg->height == h / 2 && s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) { is_single_comp = 1; } else if (s->avctx_mjpeg->width == w && s->avctx_mjpeg->height == h && s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8) ) { is_single_comp = 0; } else return AVERROR_INVALIDDATA; pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t)); if (is_single_comp && !is_u16) { av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n"); av_frame_unref(s->jpgframe); return AVERROR_PATCHWELCOME; } dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size; dst_data = frame->data[0] + dst_offset * pixel_size; src_data = s->jpgframe->data[0]; dng_blit(s, dst_data, frame->linesize[0] / pixel_size, src_data, s->jpgframe->linesize[0] / pixel_size, w, h, is_single_comp, is_u16); av_frame_unref(s->jpgframe); return 0; } static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, AVPacket *avpkt) { TiffContext *s = avctx->priv_data; int tile_idx; int tile_offset_offset, tile_offset; int tile_byte_count_offset, tile_byte_count; int tile_count_x, tile_count_y; int tile_width, tile_length; int has_width_leftover, has_height_leftover; int tile_x = 0, tile_y = 0; int pos_x = 0, pos_y = 0; int ret; s->jpgframe->width = s->tile_width; s->jpgframe->height = s->tile_length; s->avctx_mjpeg->width = s->tile_width; s->avctx_mjpeg->height = s->tile_length; has_width_leftover = (s->width % s->tile_width != 0); has_height_leftover = (s->height % s->tile_length != 0); /* Calculate tile counts (round up) */ tile_count_x = (s->width + s->tile_width - 1) / s->tile_width; tile_count_y = (s->height + s->tile_length - 1) / s->tile_length; /* Iterate over the number of tiles */ for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) { tile_x = tile_idx % tile_count_x; tile_y = tile_idx / tile_count_x; if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile tile_width = s->width % s->tile_width; else tile_width = s->tile_width; if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile tile_length = s->height % s->tile_length; else tile_length = s->tile_length; /* Read tile offset */ tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int); bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET); tile_offset = ff_tget_long(&s->gb, s->le); /* Read tile byte size */ tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int); bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET); tile_byte_count = ff_tget_long(&s->gb, s->le); /* Seek to tile data */ bytestream2_seek(&s->gb, tile_offset, SEEK_SET); /* Decode JPEG tile and copy it in the reference frame */ ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length); if (ret < 0) return ret; /* Advance current positions */ pos_x += tile_width; if (tile_x == tile_count_x - 1) { // If on the right edge pos_x = 0; pos_y += tile_length; } } /* Frame is ready to be output */ frame->pict_type = AV_PICTURE_TYPE_I; frame->key_frame = 1; return avpkt->size; } static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame) { TiffContext *s = avctx->priv_data; s->jpgframe->width = s->width; s->jpgframe->height = s->height; s->avctx_mjpeg->width = s->width; s->avctx_mjpeg->height = s->height; return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height); } 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 + s->is_bayer * 10000) { 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 121: s->avctx->pix_fmt = AV_PIX_FMT_GRAY12; break; case 10081: switch (AV_RL32(s->pattern)) { case 0x02010100: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8; break; case 0x00010102: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8; break; case 0x01000201: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8; break; case 0x01020001: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8; break; default: av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n", AV_RL32(s->pattern)); return AVERROR_PATCHWELCOME; } break; case 10101: case 10121: case 10141: case 10161: switch (AV_RL32(s->pattern)) { case 0x02010100: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16; break; case 0x00010102: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16; break; case 0x01000201: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16; break; case 0x01020001: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16; break; default: av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n", AV_RL32(s->pattern)); return AVERROR_PATCHWELCOME; } 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 = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA; break; case 405: if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED) s->avctx->pix_fmt = AV_PIX_FMT_RGBA; else { av_log(s->avctx, AV_LOG_ERROR, "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n"); return AVERROR_PATCHWELCOME; } 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]) { uint64_t num = s->res[2] * (uint64_t)s->res[1]; uint64_t den = s->res[0] * (uint64_t)s->res[3]; if (num > INT64_MAX || den > INT64_MAX) { num = num >> 1; den = den >> 1; } av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den, num, den, INT32_MAX); if (!s->avctx->sample_aspect_ratio.den) s->avctx->sample_aspect_ratio = (AVRational) {0, 1}; } } static int tiff_decode_tag(TiffContext *s, AVFrame *frame) { AVFrameSideData *sd; GetByteContext gb_temp; unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1 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; } if (tag <= s->last_tag) return AVERROR_INVALIDDATA; // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS if (tag != TIFF_STRIP_SIZE) s->last_tag = tag; 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); if (!value2) { av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n"); return AVERROR_INVALIDDATA; } break; case TIFF_STRING: if (count <= 4) { break; } default: value = UINT_MAX; } } switch (tag) { case TIFF_SUBFILE: s->is_thumbnail = (value != 0); break; case TIFF_WIDTH: s->width = value; break; case TIFF_HEIGHT: s->height = value; break; case TIFF_BPP: if (count > 5 || count <= 0) { 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 > 5 || value <= 0) { av_log(s->avctx, AV_LOG_ERROR, "Invalid samples per pixel %d\n", value); return AVERROR_INVALIDDATA; } if (s->bppcount == 1) s->bpp *= value; s->bppcount = value; break; case TIFF_COMPR: s->compr = value; av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr); 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: s->is_jpeg = 1; break; 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) { if (value > INT_MAX) { av_log(s->avctx, AV_LOG_ERROR, "strippos %u too large\n", value); return AVERROR_INVALIDDATA; } 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) { if (value > INT_MAX) { av_log(s->avctx, AV_LOG_ERROR, "stripsize %u too large\n", value); return AVERROR_INVALIDDATA; } 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_OFFSETS: s->tile_offsets_offset = off; s->tile_count = count; s->is_tiled = 1; break; case TIFF_TILE_BYTE_COUNTS: s->tile_byte_counts_offset = off; break; case TIFF_TILE_LENGTH: s->tile_length = value; break; case TIFF_TILE_WIDTH: s->tile_width = value; break; case TIFF_PREDICTOR: s->predictor = value; break; case TIFF_SUB_IFDS: if (count == 1) s->sub_ifd = value; else if (count > 1) s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */ break; case DNG_LINEARIZATION_TABLE: if (count > FF_ARRAY_ELEMS(s->dng_lut)) return AVERROR_INVALIDDATA; for (int i = 0; i < count; i++) s->dng_lut[i] = ff_tget(&s->gb, type, s->le); break; case DNG_BLACK_LEVEL: if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */ if (type == TIFF_RATIONAL) { value = ff_tget(&s->gb, TIFF_LONG, s->le); value2 = ff_tget(&s->gb, TIFF_LONG, s->le); if (!value2) { av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n"); return AVERROR_INVALIDDATA; } s->black_level = value / value2; } else s->black_level = ff_tget(&s->gb, type, s->le); av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n"); } else { s->black_level = value / value2; } break; case DNG_WHITE_LEVEL: s->white_level = value; break; case TIFF_CFA_PATTERN_DIM: if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 && ff_tget(&s->gb, type, s->le) != 2)) { av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n"); return AVERROR_INVALIDDATA; } break; case TIFF_CFA_PATTERN: s->is_bayer = 1; s->pattern[0] = ff_tget(&s->gb, type, s->le); s->pattern[1] = ff_tget(&s->gb, type, s->le); s->pattern[2] = ff_tget(&s->gb, type, s->le); s->pattern[3] = ff_tget(&s->gb, type, s->le); 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_SEPARATED: case TIFF_PHOTOMETRIC_YCBCR: case TIFF_PHOTOMETRIC_CFA: case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images s->photometric = value; break; case TIFF_PHOTOMETRIC_ALPHA_MASK: case TIFF_PHOTOMETRIC_CIE_LAB: case TIFF_PHOTOMETRIC_ICC_LAB: case TIFF_PHOTOMETRIC_ITU_LAB: case TIFF_PHOTOMETRIC_LOG_L: case TIFF_PHOTOMETRIC_LOG_LUV: 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; if (off > 31U) { av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off); return AVERROR_INVALIDDATA; } 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]); s->subsampling[i] = 1; 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: if (s->geotag_count) { avpriv_request_sample(s->avctx, "Multiple geo key directories\n"); return AVERROR_INVALIDDATA; } 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) { 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 if (s->geotags[i].val) { av_log(s->avctx, AV_LOG_WARNING, "Duplicate 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; if (s->geotags[i].val) 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_ICC_PROFILE: gb_temp = s->gb; bytestream2_seek(&gb_temp, SEEK_SET, off); if (bytestream2_get_bytes_left(&gb_temp) < count) return AVERROR_INVALIDDATA; sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count); if (!sd) return AVERROR(ENOMEM); bytestream2_get_bufferu(&gb_temp, sd->data, count); 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", " / "); // need to seek back to re-read the page number bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR); // read the page number s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le); // get back to where we were before the previous seek bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR); break; case TIFF_SOFTWARE_NAME: ADD_METADATA(count, "software", NULL); break; case DNG_VERSION: if (count == 4) { unsigned int ver[4]; ver[0] = ff_tget(&s->gb, type, s->le); ver[1] = ff_tget(&s->gb, type, s->le); ver[2] = ff_tget(&s->gb, type, s->le); ver[3] = ff_tget(&s->gb, type, s->le); av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n", ver[0], ver[1], ver[2], ver[3]); tiff_set_type(s, TIFF_TYPE_DNG); } break; case CINEMADNG_TIME_CODES: case CINEMADNG_FRAME_RATE: case CINEMADNG_T_STOP: case CINEMADNG_REEL_NAME: case CINEMADNG_CAMERA_LABEL: tiff_set_type(s, TIFF_TYPE_CINEMADNG); 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, last_off; int le, ret, plane, planes; int i, j, entries, stride; unsigned soff, ssize; uint8_t *dst; GetByteContext stripsizes; GetByteContext stripdata; int retry_for_subifd, retry_for_page; int is_dng; int has_tile_bits, has_strip_bits; 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->tiff_type = TIFF_TYPE_TIFF; again: s->is_thumbnail = 0; s->bppcount = s->bpp = 1; s->photometric = TIFF_PHOTOMETRIC_NONE; s->compr = TIFF_RAW; s->fill_order = 0; s->white_level = 0; s->is_bayer = 0; s->is_tiled = 0; s->is_jpeg = 0; s->cur_page = 0; s->last_tag = 0; for (i = 0; i < 65536; i++) s->dng_lut[i] = i; 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; } if (s->get_thumbnail && !s->is_thumbnail) { av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n"); return AVERROR_EOF; } /** whether we should process this IFD's SubIFD */ retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail)); /** whether we should process this multi-page IFD's next page */ retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed last_off = off; if (retry_for_page) { // set offset to the next IFD off = ff_tget_long(&s->gb, le); } else if (retry_for_subifd) { // set offset to the SubIFD off = s->sub_ifd; } if (retry_for_subifd || retry_for_page) { if (!off) { av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n"); return AVERROR_INVALIDDATA; } if (off <= last_off) { avpriv_request_sample(s->avctx, "non increasing IFD offset\n"); return AVERROR_INVALIDDATA; } 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->sub_ifd = 0; goto again; } /* At this point we've decided on which (Sub)IFD to process */ is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG); 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(&p->metadata, 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 (is_dng) { int bps; if (s->bpp % s->bppcount) return AVERROR_INVALIDDATA; bps = s->bpp / s->bppcount; if (bps < 8 || bps > 32) return AVERROR_INVALIDDATA; if (s->white_level == 0) s->white_level = (1LL << bps) - 1; /* Default value as per the spec */ if (s->white_level <= s->black_level) { av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n", s->black_level, s->white_level); return AVERROR_INVALIDDATA; } if (s->planar) return AVERROR_PATCHWELCOME; } if (!s->is_tiled && !s->strippos && !s->stripoff) { av_log(avctx, AV_LOG_ERROR, "Image data is missing\n"); return AVERROR_INVALIDDATA; } has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length || s->tile_count; has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff; if (has_tile_bits && has_strip_bits) { av_log(avctx, AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n"); return AVERROR_INVALIDDATA; } /* now we have the data and may start decoding */ if ((ret = init_image(s, &frame)) < 0) return ret; if (!s->is_tiled) { 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; } } if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW || s->photometric == TIFF_PHOTOMETRIC_CFA) { p->color_trc = AVCOL_TRC_LINEAR; } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) { p->color_trc = AVCOL_TRC_GAMMA22; } /* Handle DNG images with JPEG-compressed tiles */ if (is_dng && s->is_tiled) { if (!s->is_jpeg) { avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images"); return AVERROR_PATCHWELCOME; } else if (!s->is_bayer) { avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images"); return AVERROR_PATCHWELCOME; } else { if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0) *got_frame = 1; return ret; } } /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */ planes = s->planar ? s->bppcount : 1; for (plane = 0; plane < planes; plane++) { uint8_t *five_planes = NULL; int remaining = avpkt->size; int decoded_height; stride = p->linesize[plane]; dst = p->data[plane]; if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED && s->avctx->pix_fmt == AV_PIX_FMT_RGBA) { stride = stride * 5 / 4; five_planes = dst = av_malloc(stride * s->height); if (!dst) return AVERROR(ENOMEM); } for (i = 0; i < s->height; i += s->rps) { if (i) dst += s->rps * stride; 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 || ssize > remaining) { av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n"); av_freep(&five_planes); return AVERROR_INVALIDDATA; } remaining -= ssize; 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) { av_freep(&five_planes); return ret; } break; } } decoded_height = FFMIN(i, s->height); 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 = five_planes ? five_planes : 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 < decoded_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 < decoded_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 < decoded_height; i++) { for (j = soff; j < ssize; j++) dst[j] += dst[j - soff]; dst += stride; } } } if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) { int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255); dst = p->data[plane]; for (i = 0; i < s->height; i++) { for (j = 0; j < stride; j++) dst[j] = c - dst[j]; dst += stride; } } if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED && (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) { int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5; uint8_t *src = five_planes ? five_planes : p->data[plane]; dst = p->data[plane]; for (i = 0; i < s->height; i++) { for (j = 0; j < s->width; j++) { int k = 255 - src[x * j + 3]; int r = (255 - src[x * j ]) * k; int g = (255 - src[x * j + 1]) * k; int b = (255 - src[x * j + 2]) * k; dst[4 * j ] = r * 257 >> 16; dst[4 * j + 1] = g * 257 >> 16; dst[4 * j + 2] = b * 257 >> 16; dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255; } src += stride; dst += p->linesize[plane]; } av_freep(&five_planes); } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED && s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) { dst = p->data[plane]; for (i = 0; i < s->height; i++) { for (j = 0; j < s->width; j++) { uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6); uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k; uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k; uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k; AV_WB16(dst + 8 * j , r * 65537 >> 32); AV_WB16(dst + 8 * j + 2, g * 65537 >> 32); AV_WB16(dst + 8 * j + 4, b * 65537 >> 32); AV_WB16(dst + 8 * j + 6, 65535); } 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]); } if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) { uint16_t *dst = (uint16_t *)p->data[0]; for (i = 0; i < s->height; i++) { for (j = 0; j < s->width; j++) dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535); dst += stride / 2; } } *got_frame = 1; return avpkt->size; } static av_cold int tiff_init(AVCodecContext *avctx) { TiffContext *s = avctx->priv_data; const AVCodec *codec; int ret; s->width = 0; s->height = 0; s->subsampling[0] = s->subsampling[1] = 1; s->avctx = avctx; ff_lzw_decode_open(&s->lzw); if (!s->lzw) return AVERROR(ENOMEM); ff_ccitt_unpack_init(); /* Allocate JPEG frame */ s->jpgframe = av_frame_alloc(); if (!s->jpgframe) return AVERROR(ENOMEM); /* Prepare everything needed for JPEG decoding */ codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG); if (!codec) return AVERROR_BUG; s->avctx_mjpeg = avcodec_alloc_context3(codec); if (!s->avctx_mjpeg) return AVERROR(ENOMEM); s->avctx_mjpeg->flags = avctx->flags; s->avctx_mjpeg->flags2 = avctx->flags2; s->avctx_mjpeg->dct_algo = avctx->dct_algo; s->avctx_mjpeg->idct_algo = avctx->idct_algo; ret = ff_codec_open2_recursive(s->avctx_mjpeg, codec, NULL); if (ret < 0) { return ret; } 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); s->deinvert_buf_size = 0; av_freep(&s->yuv_line); s->yuv_line_size = 0; av_freep(&s->fax_buffer); s->fax_buffer_size = 0; av_frame_free(&s->jpgframe); avcodec_free_context(&s->avctx_mjpeg); return 0; } #define OFFSET(x) offsetof(TiffContext, x) static const AVOption tiff_options[] = { { "subimage", "decode subimage instead if available", OFFSET(get_subimage), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM }, { "thumbnail", "decode embedded thumbnail subimage instead if available", OFFSET(get_thumbnail), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM }, { "page", "page number of multi-page image to decode (starting from 1)", OFFSET(get_page), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM }, { NULL }, }; static const AVClass tiff_decoder_class = { .class_name = "TIFF decoder", .item_name = av_default_item_name, .option = tiff_options, .version = LIBAVUTIL_VERSION_INT, }; 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, .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS, .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, .priv_class = &tiff_decoder_class, };