{"id":19447,"date":"2025-11-18T22:55:49","date_gmt":"2025-11-18T14:55:49","guid":{"rendered":"https:\/\/www.bookcard.net\/wordpress\/?p=19447"},"modified":"2025-11-18T22:55:49","modified_gmt":"2025-11-18T14:55:49","slug":"bigtiff","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/bigtiff\/","title":{"rendered":"BIGTIFF\u5716\u6a94\u89e3\u6790"},"content":{"rendered":"
\"BIGTIFF\u5716\u6a94\u89e3\u6790\"<\/a>
BIGTIFF\u5716\u6a94\u89e3\u6790<\/figcaption><\/figure>\n

\u9ad8\u89e3\u50cf\u5ea6\u300eTIFF<\/a>\u300f\u5716\u7247, \u52a0\u5165\u300eBIGTIFF\u300f\u898f\u8303,\u4f7f\u752864bit\u652f\u7de94GB\u4ee5\u4e0a\u5716\u7247. \u652f\u7de9\u300eZIP\u300f\u58d3\u7e2e.\u64f4\u5c55\u540d\u300e.tf8\u300f\u300e.btf\u300f\u300e.tiff\u300f.<\/p>\n

\u300eBIGTIFF\u300f\u5716\u6a94\u982dImage File Header(IFH)<\/p>\n\n\n\n\n\n\n\n\n\n
typedef struct BIGTIFF_HEAD_TYP {<\/td>\nBIGTIFF\u5716\u6a94\u982d<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 WORD ByteOrder;<\/td>\n\u5b57\u7bc0\u9806\u5e8f\u00a0 ‘II’ \/ ‘MM’<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 WORD version;<\/td>\nBIGTIFF\u5716\u6a94\u7248\u672c\u00a0 0x002B<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 WORD\u00a0\u00a0\u00a0\u00a0 ReservedOffset;<\/td>\n\u4fdd\u7559<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 WORD\u00a0\u00a0\u00a0\u00a0 Reserved;<\/td>\n\u4fdd\u7559<\/td>\n<\/tr>\n
DWORD64\u00a0 offset;<\/td>\n\u9996\u500bIFD\u504f\u79fb\u91cf64BIT,\u908a\u754c\u5c0d\u9f4a4<\/td>\n<\/tr>\n
}BIGTIFF_HEAD, * BIGTIFF_HEAD_PTR;<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5340\u5206\u300eBIGTIFF\u300f\u4edd\u300eTIFF<\/a>\u300f<\/p>\n\n\n\n\n
#define TIFF_VERSION\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0x002A<\/td>\nTIFF\u5716\u6a94\u7248\u672c<\/td>\n<\/tr>\n
#define BIGTIFF_VERSION\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0x002B<\/td>\nBIGTIFF\u5716\u6a94\u7248\u672c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u300eBIGTIFF\u300f\u65b0\u589e\u4e09\u500b\u6578\u64da\u985e\u578b<\/p>\n\n\n\n\n\n
#define BIGTIFF_TYPE_LONG8\u00a0\u00a0\u00a0\u00a0 16<\/td>\n\u5187\u7b26\u865f8\u5b57\u7bc0(64\u4f4d)\u6574\u6570<\/td>\n<\/tr>\n
#define BIGTIFF_TYPE_SLONG8\u00a0\u00a0\u00a0 17<\/td>\n\u6709\u7b26\u865f8\u5b57\u7bc0(64 \u4f4d)\u6574\u6570<\/td>\n<\/tr>\n
#define BIGTIFF_TYPE_IFD8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 18<\/td>\n\u65e0\u7b26\u53f78\u5b57\u7bc0(64\u4f4d)IFD\u504f\u79fb\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u300eBIGTIFF\u300f\u65b0\u589eZIP\u58d3\u7e2e\u985e\u578b 8<\/p>\n\n\n\n
#define TIFF_Compression_ZIP\u00a0 8<\/td>\nZIP\u58d3\u7e2e, MAX_WBITS\u5e36 zlib \u982d\u548c\u5c3e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u300eBIGTIFF\u300f\u76ee\u9304\u5165\u53e3 Directory Entry(DE)<\/p>\n\n\n\n\n\n\n\n\n\n
typedef struct BIGTIFF_ENTER_TYP {<\/td>\n\u5373\u4fc2\u6578\u503c<\/td>\n<\/tr>\n
WORD\u00a0 tag;<\/td>\n\u6a19\u8b58<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 WORD\u00a0 type;<\/td>\n\u6578\u64da\u985e\u578b 1~12 16~17<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DWORD64 count;<\/td>\n\u6578\u91cf64BIT<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 union {<\/p>\n

DWORD64 data;<\/td>\n

\u6578\u503c64BIT<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DWORD64 offset;<\/p>\n

};<\/td>\n

\u504f\u79fb64BIT<\/td>\n<\/tr>\n
}BIGTIFF_ENTER, * BIGTIFF_ENTER_PTR;<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u300eBIGTIFF\u300f\u76ee\u9304 Image File Directory(IFD)<\/p>\n\n\n\n\n\n\n\n
typedef struct BIGTIFF_DIRECTORY_TYP {<\/td>\n <\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DWORD64\u00a0 count;<\/td>\n\u76ee\u9304\u6578\u91cf64BIT<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 BIGTIFF_ENTER enter_array[1];<\/td>\n\u76ee\u9304,\u5373\u4fc2\u6578\u503c<\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ DWORD64 offset;<\/td>\n64BIT\u4e0b\u58f9\u500b\u504f\u79fb-BIGIFD<\/td>\n<\/tr>\n
}BIGTIFF_DIRECTORY, * BIGTIFF_DIRECTORY_PTR;<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u300e\u9ad8\u89e3\u50cf\u5716\u7247\u300f\u7d44\u7e54\u6210\u300eTiled\u74e6\u7247\u300f\u800c\u975e\u300e\u689d\u5e36Strip\u300f, \u4f4e\u4e2d\u89e3\u50cf\u5716\u50cf\u7528\u6a19\u6e96\u300eTIFF<\/a>\u300f\u300e\u689d\u5e36Strip\u300f.\u300e\u9ad8\u89e3\u50cf\u5716\u7247\u300f\u5207\u5272\u6210\u5927\u81f4\u65b9\u6b63\u584a\u72c0,\u800c\u975e\u9577\u689d\u300e\u689d\u5e36Strip\u300f.\u58d3\u7e2e\u6548\u679c\u66f4\u4f73.<\/p>\n

\u300eTiled\u74e6\u7247\u300f\u53d6\u4ee3\u300eStripOffsets\u300f\u3001\u300eStripByteCounts\u300f\u300eRowsPerStrip\u300f. \u5207\u5ffd\u4edd\u6642\u7528\u300eTiled\u74e6\u7247\u300f\u4edd\u300e\u689d\u5e36Strip\u300f.<\/p>\n

\u300eTileWidth\u300f\u4edd\u300eTileLength\u300f\u300e\u74e6\u7247\u300f\u5b9a\u7fa9\u5bec\u9ad8. \u6240\u6709\u300e\u74e6\u7247\u300f\u300e\u5bec\u9ad8\u300f\u76f8\u540c, \u300e\u74e6\u7247\u300f\u908a\u754c\u586b\u5145.<\/p>\n

\u7576\u300eImageWidth\u300f=129, \u300eTileWidth\u300f= 64.\u5247\u5206\u52723\u500b\u300eTiled\u74e6\u7247\u300f, \u6700\u5f8c\u4e00\u500b\u586b\u514563\u500b\u50cf\u7d20.<\/p>\n

\u5e73\u92ea\u908a\u754c\u4ee3\u50f9\u9700\u8981\u6d6a\u8cbb\u4e00\u5b9a\u7a7a\u9593,\u4f46\u4fc2\u58d3\u7e2e\u53ef\u4ee5\u5c07\u586b\u5145\u5340\u58d3\u7e2e\u5230\u63a5\u8fd10.<\/p>\n

\u5373\u4f7f\u6578\u64da\u5187\u58d3\u7e2e,\u300eTiled\u74e6\u7247\u300f\u7957\u9002\u7528\u65bc\u300e\u9ad8\u89e3\u50cf\u5716\u7247\u300f. \u300e\u9ad8\u89e3\u50cf\u5716\u7247\u300f\u5206\u5272\u5927\u91cf\u300eTiled\u74e6\u7247\u300f, \u586b\u5145\u5340\u7948\u6d6a\u8cbb\u767e\u5206\u4e4b\u5e7e\u7a7a\u9593,<\/p>\n

\u300eTiled\u74e6\u7247\u300f\u88ab\u55ae\u7368\u58d3\u7e2e, \u4edd\u300e\u689d\u5e36Strip\u300f\u58d3\u7e2e\u4e00\u6a23. \u5373\u6bcf\u500b\u300eTiled\u74e6\u7247\u300f\u6578\u64da\u88ab\u8996\u70ba\u55ae\u7368\u300e\u689d\u5e36Strip\u300f.<\/p>\n

\u300eTiled\u74e6\u7247\u300f\u6b04\u4f4d\uff1a<\/p>\n\n\n\n\n\n\n\n
\u300eTiled\u74e6\u7247\u300f\u6b04\u4f4d\uff1a<\/td>\n <\/td>\n <\/td>\n<\/tr>\n
TileWidth<\/td>\nSHORT or LONG<\/td>\n\u74e6\u7247\u5bec\u5ea6, \u5fc5\u980816\u500d\u6578<\/td>\n<\/tr>\n
TileHeight<\/td>\nSHORT or LONG<\/td>\n\u74e6\u7247\u9ad8\u5ea6, \u5fc5\u980816\u500d\u6578<\/td>\n<\/tr>\n
TileOffsets<\/td>\nLONG or LONG8<\/td>\n\u74e6\u7247(\u6578\u64da)\u504f\u79fb, \u5f9e\u5de6\u5230\u53f3\u5f9e\u4e0a\u5230\u4e0b\u7684\u9806\u5e8f\u6392\u5217.<\/td>\n<\/tr>\n
TileByteCounts<\/td>\nSHORT or LONG or LONG8<\/td>\n\u74e6\u7247\u6578\u64da\u5b57\u7bc0\u91cf, \u5f9e\u5de6\u5230\u53f3\u5f9e\u4e0a\u5230\u4e0b\u7684\u9806\u5e8f\u6392\u5217.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u8f09\u5165\u74e6\u7247\u6578\u64da<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
bool Load_Tile_TIFF(TIFF_PTR tiff){<\/td>\n<\/tr>\n
PBYTE\u00a0 tile_buffer; \/\/ \u74e6\u7247\u5716\u50cf<\/p>\n

DWORD64\u00a0\u00a0\u00a0 tile_size; \/\/ \u74e6\u7247\u6578\u64da\u5b57\u7bc0\u91cf<\/p>\n

DWORD64\u00a0\u00a0\u00a0 tile_offset;\/\/ \u74e6\u7247\u6570\u636e\u504f\u79fb<\/p>\n

DWORD64 tiles_countX;\/\/ \u74e6\u7247\u6a6b\u8de8<\/p>\n

DWORD64 tiles_countY;\u00a0 \/\/ \u74e6\u7247\u7e31\u8de8<\/p>\n

DWORD64 line_size;<\/p>\n

DWORD64 index, i, j; \/\/ \u7d22\u5f15<\/p>\n

DWORD64 offset;\/\/ (\u6578\u64da)\u504f\u79fb.<\/p>\n

DWORD64 count;\/\/ \u6578\u64da\u5b57\u7bc0\u91cf<\/p>\n

DWORD64 size;\/\/ \u5beb\u5165\u91cf<\/p>\n

DWORD64 buffer_offset;\/\/ \u5716\u50cf\u6570\u636e\u504f\u79fb<\/p>\n

DWORD64 buffer_size;\/\/ \u5716\u50cf\u6570\u636e\u5b57\u7bc0<\/td>\n<\/tr>\n

tiles_countX = (tiff->ImageWidth + tiff->TileWidth – 1) \/ tiff->TileWidth;\/\/ \u74e6\u7247\u6a6b\u8de8<\/td>\n<\/tr>\n
tiles_countY = (tiff->ImageHeight + tiff->TileHeight – 1) \/ tiff->TileHeight;\/\/ \u74e6\u7247\u7e31\u8de8<\/td>\n<\/tr>\n
tile_size = tiff->TileWidth * tiff->TileHeight * tiff->SamplesPerPixel; \/\/ \u74e6\u7247\u6578\u64da\u5b57\u7bc0\u91cf<\/td>\n<\/tr>\n
tile_buffer = (PBYTE)malloc(tile_size);\/\/ \u5206\u914d\u8a18\u61b6\u9ad4<\/td>\n<\/tr>\n
size = 0;\/\/ \u5beb\u5165\u91cf<\/td>\n<\/tr>\n
\/\/ \u8a08\u7b97\u5716\u50cf\u6240\u5360\u9577\u5ea6<\/p>\n

buffer_size = (tiff->ImageWidth * tiff->ImageHeight) * tiff->SamplesPerPixel;<\/td>\n<\/tr>\n

\/\/ \u5b9a\u4f4d\u5e73\u92ea\/\u74e6\u7247\u56fe\u50cf\u6570\u636e<\/p>\n

for (j = 0; j < tiles_countY; ++j){<\/td>\n<\/tr>\n

for (i = 0; i < tiles_countX; ++i){<\/td>\n<\/tr>\n
index = j * tiles_countX + i;<\/td>\n<\/tr>\n
offset = tiff->TileOffsets[index]; \/\/ (\u6578\u64da)\u504f\u79fb.<\/p>\n

count = tiff->TileByteCounts[index]; \/\/ \u6578\u64da\u5b57\u7bc0\u91cf<\/td>\n<\/tr>\n

\/\/ \u8b80\u74e6\u7247\u6578\u64da<\/p>\n

if (tiff->Compression == TIFF_Uncompressed)<\/p>\n

{\/\/ \u672a\u58d3\u7e2e<\/p>\n

memcpy(tile_buffer, tiff->data + offset, count);\/\/ \u590d\u5236\u56fe\u50cf\u6570\u636e<\/p>\n

size = size + count;\/\/ \u7d2f\u7a4d\u5beb\u5165\u91cf<\/p>\n

}else<\/td>\n<\/tr>\n

if (tiff->Compression == TIFF_Compression_LZW)<\/p>\n

{\/\/ LZW \u89e3\u58d3\u7e2e<\/p>\n

tile_size = ((tiff->TileWidth * tiff->TileHeight) * tiff->SamplesPerPixel);<\/p>\n

UnCompress_Data_LZW(&_lzw, tile_buffer, &tile_size, tiff->data + offset, count);<\/p>\n

size = size + tile_size;\/\/ \u7d2f\u7a4d\u5beb\u5165\u91cf<\/p>\n

}<\/p>\n

else<\/td>\n<\/tr>\n

if (tiff->Compression == TIFF_Compression_ZIP)<\/p>\n

{\/\/ ZIP \u89e3\u58d3\u7e2e<\/p>\n

DWORD _tile_size = ((tiff->TileWidth * tiff->TileHeight) * tiff->SamplesPerPixel);<\/p>\n

Uncompress_Data_ZIP(tile_buffer, &_tile_size, tiff->data + offset, (DWORD)count, MAX_WBITS);<\/p>\n

size = size + _tile_size;\/\/ \u7d2f\u7a4d\u5beb\u5165\u91cf<\/p>\n

}<\/td>\n<\/tr>\n

\/\/ \u5beb\u5165\u74e6\u7247\u6578\u64da<\/p>\n

for (DWORD tindex = 0; tindex < tiff->TileHeight; ++tindex)<\/p>\n

{<\/td>\n<\/tr>\n

if ( (j * tiff->TileHeight + tindex)\u00a0 >= tiff->ImageHeight )<\/p>\n

break;\/\/ \u8d85\u51fa<\/td>\n<\/tr>\n

buffer_offset = ( ((j * tiff->TileHeight + tindex) * tiff->ImageWidth) + (i * tiff->TileWidth)) * tiff->SamplesPerPixel;\/\/ \u5716\u50cf\u6570\u636e\u504f\u79fb<\/td>\n<\/tr>\n
tile_offset = tindex * tiff->TileWidth * tiff->SamplesPerPixel;\/\/ \u74e6\u7247\u6570\u636e\u504f\u79fb<\/td>\n<\/tr>\n
if ((tiff->TileWidth * i) > tiff->ImageWidth)<\/p>\n

line_size = (tiff->ImageWidth – (tiff->TileWidth * (i – 1))) * tiff->SamplesPerPixel;<\/p>\n

else<\/p>\n

line_size = tiff->TileWidth * tiff->SamplesPerPixel;<\/td>\n<\/tr>\n

if (buffer_offset >= buffer_size)<\/p>\n

break;\/\/ \u622a\u65b7\u586b\u5145\u5340<\/td>\n<\/tr>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 memcpy(tiff->buffer + buffer_offset, tile_buffer + tile_offset, line_size);<\/p>\n

}<\/p>\n

}<\/p>\n

}<\/td>\n<\/tr>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 free(tile_buffer);\/\/ \u91ca\u653e<\/p>\n

return true;<\/p>\n

}<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

\u9ad8\u89e3\u50cf\u5ea6\u300eTIFF\u300f\u5716\u7247, \u52a0\u5165\u300eBIGTIFF\u300f\u898f\u8303,\u4f7f\u752864bit\u652f\u7de94GB\u4ee5\u4e0a\u5716\u7247. \u652f\u7de9\u300eZIP\u300f\u58d3\u7e2e … <\/p>\n

\u7e7c\u7e8c\u95b1\u8b80 BIGTIFF\u5716\u6a94\u89e3\u6790<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51,13],"tags":[3,42],"class_list":["post-19447","post","type-post","status-publish","format-standard","hentry","category-windows","category-pc","tag-windows","tag-computer","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/19447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=19447"}],"version-history":[{"count":1,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/19447\/revisions"}],"predecessor-version":[{"id":19449,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/19447\/revisions\/19449"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=19447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=19447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=19447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}