{"id":782,"date":"2010-09-13T14:05:02","date_gmt":"2010-09-13T05:05:02","guid":{"rendered":"http:\/\/labs.gree.jp\/blog\/?p=782"},"modified":"2021-04-27T15:07:20","modified_gmt":"2021-04-27T06:07:20","slug":"post782","status":"publish","type":"post","link":"https:\/\/labs.gree.jp\/blog\/2010\/09\/782\/","title":{"rendered":"SWF\u30d0\u30a4\u30ca\u30ea\u7de8\u96c6\u306e\u30b9\u30b9\u30e1\u7b2c\u4e09\u56de (JPEG)"},"content":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\u3002\u30e1\u30c7\u30a3\u30a2\u958b\u767a\u306e\u3088\u3084\u3067\u3059\u3002<\/p>\n<p>\u524d\u56de\u3001SWF\u66f8\u304d\u63db\u3048\u306e\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3057\u307e\u3057\u305f\u3002<br \/>\n\u4eca\u56de\u306f\u3001JPEG \u753b\u50cf\u5165\u308c\u66ff\u3048\u306b\u3064\u3044\u3066\u3067\u3059\u3002<\/p>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_0\"> SWF\u306b\u304a\u3051\u308b\u753b\u50cf\u306e\u6271\u3044<\/h3>\n<p>SWF \u306f\u30d9\u30af\u30bf\u30fc\u753b\u50cf\u3068\u30d3\u30c3\u30c8\u30de\u30c3\u30d7\u753b\u50cf\u306e\u4e21\u65b9\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u753b\u50cf\u60c5\u5831\u3092\u683c\u7d0d\u3059\u308b tag \u306b\u306f\u5e7e\u3064\u304b\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002(tag \u540d\u306e\u5f8c\u308d\u306b\u3064\u304f\u6570\u5b57\u306f\u7701\u7565)<\/p>\n<ul>\n<li> DefineShape (\u30d9\u30af\u30bf\u30fc\u753b\u50cf\u3002\u3069\u306e\u30da\u30f3\u3067\u4f55\u51e6\u306b\u7dda\u3092\u5f15\u3044\u305f\u3068\u3044\u3063\u305f\u60c5\u5831)<\/li>\n<li> DefineBitsJPEG (JPEG\u753b\u50cf) (<a href=\"#hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnote_1\" id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnotelink_1\" title=\"SWF \u30d0\u30fc\u30b8\u30e7\u30f3 8 \u304b\u3089 PNG \u3084 GIF \u3092\u305d\u306e\u307e\u307e\u5165\u308c\u3089\u308c\u308b\u4e8b\u306b\u306a\u308a\u307e\u3057\u305f\u3002BitsJPEG \u3068\u3044\u3046\u30bf\u30b0\u540d\u3068\u5b9f\u60c5\u304c\u5408\u3063\u3066\u3044\u307e\u305b\u3093\u304c\u3002\">*1<\/a>)<\/li>\n<li> DefineBitsLossless (PNG\u7684\u306a\u53ef\u9006\u5727\u7e2e\u753b\u50cf, \u30b7\u30f3\u30d7\u30eb\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092Zlib\u5727\u7e2e)<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u4e2d\u3067\u6bd4\u8f03\u7684\u5dee\u3057\u66ff\u3048\u304c\u697d\u306a JPEG\u753b\u50cf\u3092\u53d6\u308a\u4e0a\u3052\u307e\u3059\u3002<\/p>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_1\"> JPEG tag \u306b\u3064\u3044\u3066<\/h3>\n<ul>\n<li>\n Flash Lite 1.1\/2.0 \u3067\u5bfe\u5fdc\u3059\u308b JPEG \u7cfb tag \u306f\u4ee5\u4e0b\u306e4\u3064\u3067\u3059\u3002<\/p>\n<ul>\n<li>  JPEGTables, DefineBits, DefineBitsJPEG2, DefineBitsJPEG3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li> JPEG \u306e\u30c7\u30fc\u30bf\u306f\u305d\u306e\u307e\u307e\u3067\u306f\u3001\u3053\u308c\u3089\u306e tag \u306b\u5165\u308a\u307e\u305b\u3093\u3002(\u305d\u306e\u307e\u307e\u5165\u308c\u3066\u3082 IE, FireFox \u3067\u306f\u8868\u793a\u3067\u304d\u307e\u3059\u304c\u3001\u643a\u5e2f\u3067\u306f\u5927\u62b5\u8868\u793a\u3067\u304d\u307e\u305b\u3093\u3057\u3001\u4ed5\u69d8\u7684\u306b\u3082\u30a4\u30ea\u30fc\u30ac\u30eb\u3067\u3059)<\/li>\n<li> JPEG \u306e chunk \u69cb\u9020\u3068 SWF \u306e\u30bf\u30b0\u306e\u5909\u9077\u304b\u3089\u3001\u305d\u306e\u6b74\u53f2\u7684\u4e8b\u60c5\u3092\u8ffd\u3063\u3066\u307f\u307e\u3059\u3002<\/li>\n<\/ul>\n<h4 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_2\"> JPEG chunk  (\u57fa\u790e\u77e5\u8b58)<\/h4>\n<ul>\n<li> JPEG \u306f\u30e1\u30bf\u30c7\u30fc\u30bf\u3001\u5727\u7e2e\u30c6\u30fc\u30d6\u30eb\u3001(\u5727\u7e2e\u3055\u308c\u305f)\u30a4\u30e1\u30fc\u30b8\u30c7\u30fc\u30bf\u7b49\u306e chunk \u3067\u5206\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/08\/jpeg_chunk.png\" alt=\"JPEG Chunk\" \/>\u3000(<a href=\"#hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnote_2\" id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnotelink_2\" title=\"JPEG chunk \u306e\u4e26\u3073\u306f\u3042\u308b\u7a0b\u5ea6\u878d\u901a\u304c\u5229\u304f\u306e\u3067\u3001\u3053\u306e\u56f3\u3068\u7570\u306a\u308b\u4e8b\u304c\u3042\u308a\u307e\u3059\u3002\">*2<\/a>)<\/p>\n<ul>\n<li> SOI(Start of Image) \u3067\u59cb\u307e\u308a\u3001EOI(End of Image) \u3067\u7d42\u308f\u308a\u307e\u3059\u3002<\/li>\n<li> \u57fa\u672c\u306f TLC (Tag, Length, Content)\u69cb\u9020\u3067\u3059\u304c\u3001Lenght \u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u6301\u305f\u306a\u3044 chunk \u3082\u3042\u308a\u307e\u3059\u3002<\/li>\n<li> Length \u30d5\u30a3\u30fc\u30eb\u30c9\u306f 2byte \u3067\u3059\u3002SWF \u3068\u7570\u306a\u308a BigEndian \u3067\u3001\u304b\u3064 Length\u30d5\u30a3\u30fc\u30eb\u30c9(2byte)\u3092\u542b\u3081\u305f\u9577\u3055\u3067\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/08\/jpeg_chunk_length.png\" alt=\"JPEG Chunk Length\" \/><\/p>\n<pre class=\"superpre \">\n% hexdump -C orz.jpg\n00000000  ff d8 ff e0 00 10 4a 46  49 46 00 01 01 01 00 60  |......JFIF.....`|\n          <---> <----|-----|------------------------------\n          SOI    APP0 len=0x10\n00000010  00 60 00 00 ff db 00 43  00 08 06 06 07 06 05 08  |.`.....C........|\n          ----------> <----|-----|-------------------------\n                       DQT len=0x43<\/pre>\n<ul>\n<li> SOS, RST \u306f Length \u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u306a\u304f\u3001\u6b21\u306e Marker \u304c\u6765\u308b\u307e\u3067\u3067\u3059\u3002(\u3053\u308c\u304c\u5c11\u3005\u3084\u3063\u304b\u3044\u306a\u4ed5\u69d8)<\/li>\n<\/ul>\n<pre class=\"superpre \">\n00000140  22 ff da 00 0c 03 01 00  02 11 03 11 00 3f 00 a0  |\"............?..|\n             <----|---------------------------------------\n              SOS  (\u2191length\u3067\u306f\u7121\u3044)\n000008d0  88 80 88 88 08 88 80 88  88 08 88 83 ff d9        |..............|\n          -----------------------------------> <--->\n                                                EOI<\/pre>\n<ul>\n<li> SOS \u3084 RST \u306e\u30c7\u30fc\u30bf\u4e2d\u306b Marker \u76f8\u5f53\u306e 2byte \u304c\u542b\u307e\u308c\u308b\u4e8b\u3082\u3042\u308a\u5f97\u308b\u306e\u3067\u3001\u305d\u306e\u5834\u5408\u306f FF ?? \u304c FF 00 ?? \u306b\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u307e\u3059\u3002\u305d\u3053\u3067\u3001SOS \u3084 RST \u306e\u7d42\u7aef\u3092\u63a2\u3059\u969b\u306f\u3001 FF 00 \u4ee5\u5916\u306e FF ?? \u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3068\u3044\u3046\u9762\u5012\u306a\u51e6\u7406\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li> \u4ee5\u4e0a\u306e\u51e6\u7406\u3092 PHP \u3067\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3057\u305f\u3002 > IO_SWF_JPEG function _splitChunk()<\/li>\n<li> <a href=\"http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/IO\/SWF\/JPEG.php\">http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/IO\/SWF\/JPEG.php<\/a><\/li>\n<\/ul>\n<ul>\n<li> \u4f7f\u3044\u65b9: <a href=\"http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/sample\/jpeg_dump.php\">http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/sample\/jpeg_dump.php<\/a><\/li>\n<\/ul>\n<pre class=\"superpre php\">\n$swf_jpeg = new IO_SWF_JPEG();\n$swf_jpeg->input($jpegdata);\n$swf_jpeg->dumpChunk();<\/pre>\n<ul>\n<li> \u5b9f\u884c\u7d50\u679c<\/li>\n<\/ul>\n<pre class=\"superpre \">\n% php jpeg_dump.php dump orz.jpg\nSOI:\nAPP0: length=14 md5=6231819e4c55dc62557f1cda73329e99\nDQT: length=65 md5=d0eaa368737f17f6037757d393a22599\nDQT: length=65 md5=0ccab5367a4a1a6b9d4f5dc5b1b6da3f\nSOF0: length=15 md5=c83e80b171b05e3d1daaecc9f7a9d4b2\nDHT: length=26 md5=c30a44c47fc7a3bf3dc08b0d0c16cb24\nDHT: length=54 md5=ad4a54e8cffc484a1d57d8b9619159e8\nDHT: length=21 md5=f5142d552f32b0fd9b6f01287d6187cd\nDHT: length=27 md5=5340e2d349d844450c870b9a37698f85\nSOS: length=1945 md5=8003cab9c3564d49fb37d5f4a30d8a1e\nEOI:<\/pre>\n<p>\u3055\u3066\u3001<strong>\u3053\u3053\u304b\u3089\u672c\u984c<\/strong>\u3067\u3059\u3002<\/p>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_3\"> JPEG tag \u306e\u69cb\u9020<\/h3>\n<h4 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_4\"> JPEGTables + DefineBits<\/h4>\n<ul>\n<li> (Flash \u306e\u524d\u8eab) Future Splash (SWF version 1 \u76f8\u5f53)\u3067\u306f\u3001JPEG \u753b\u50cf\u306f2\u3064\u306e tag \u3092\u7528\u3044\u3066\u8868\u73fe\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/li>\n<li> JPEG chunk \u306e\u3046\u3061\u3001\u5727\u7e2e\u30c6\u30fc\u30d6\u30eb(\u91cf\u5b50\u5316\u30c6\u30fc\u30d6\u30eb\u3001\u30cf\u30d5\u30de\u30f3\u7b26\u53f7\u5316\u30c6\u30fc\u30d6\u30eb)\u304cJPEGTables \u306b\u5165\u308a\u3001\u6b8b\u308a(\u30e1\u30bf\u30c7\u30fc\u30bf\u3001\u5727\u7e2e\u3055\u308c\u305f\u753b\u50cf\u30c7\u30fc\u30bf\u7b49)\u3092 DefineBits \u306b\u5165\u308c\u307e\u3059\u3002\u5404\u3005 SOI \u3068 EOI \u3067\u56f2\u307f\u307e\u3059\u3002<\/li>\n<li> JPEGTables \u306f SWF \u306e\u4e2d\u306b\u4e00\u3064\u3060\u3051\u7f6e\u3051\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/JPEGTables_v2.png\" alt=\"JPEGTables & DefineBits\" \/>(<a href=\"#hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnote_3\" id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnotelink_3\" title=\"\u7a7a\u306e JPEGTables \u3092\u7f6e\u304f\u4e8b\u3067\u3001DefineBits \u306b\u751f\u306e JPEG\u30c7\u30fc\u30bf\u3092\u5165\u308c\u308b\u65b9\u6cd5\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u672a\u691c\u8a3c\u306a\u306e\u3067\u4eca\u56de\u53d6\u308a\u4e0a\u3052\u307e\u305b\u3093\">*3<\/a>)<\/p>\n<ul>\n<li> \u5727\u7e2e\u30c6\u30fc\u30d6\u30eb\u3092 JPEGTables \u306b\u5171\u901a\u3057\u3066\u6301\u3064\u4e8b\u3067\u3001\u30b9\u30da\u30fc\u30b9(SWF\u5168\u4f53\u306e\u30b5\u30a4\u30ba)\u304c\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002<\/li>\n<li> \u3057\u304b\u3057\u306a\u304c\u3089\u5b9f\u969b\u306b\u306f\u3001\u753b\u50cf\u306b\u5408\u3063\u305f\u5727\u7e2e\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u308f\u306a\u3044\u3068\u3001\u5727\u7e2e\u7387\u3084\u753b\u8cea\u306b\u60aa\u5f71\u97ff\u304c\u51fa\u307e\u3059\u3002<\/li>\n<li> \u305d\u3053\u3067\u3001DefineBitsJPEG2 \u306e\u767b\u5834\u3067\u3059\u3002<\/li>\n<\/ul>\n<h4 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_5\"> DefineBitsJPEG2<\/h4>\n<ul>\n<li> DefineBitsJPEG2 \u306f SWF version 2 \u3067\u8ffd\u52a0\u3055\u308c\u305f tag \u3067\u3059\u3002<\/li>\n<li> \u60c5\u5831\u7684\u306b\u306f\u901a\u5e38\u306e JPEG \u30d5\u30a1\u30a4\u30eb\u3068\u540c\u7b49\u3067\u3059\u304c\u3001 JPEG chunk \u306e\u4e26\u3073\u304c\u7570\u306a\u308b\u4e0a\u306b\u3001SOI, EOI \u304c\uff12\u3064\u3065\u3064\u5b58\u5728\u3057\u307e\u3059\u3002<\/li>\n<li> chunk \u3092\u826f\u304f\u898b\u308b\u3068 JPEGTables \u3068 DefineBits \u3092\u305d\u306e\u307e\u307e\u7e4b\u3052\u305f\u5f62\u5f0f\u3067\u3059\u3002<\/li>\n<li> \u305d\u308c\u6545\u3001JPEG \u30d5\u30a1\u30a4\u30eb\u306e\u30c7\u30fc\u30bf\u3092 DefineBitsJPEG2 \u306b\u305d\u306e\u307e\u307e\u3067\u306f\u5165\u308c\u3089\u308c\u307e\u305b\u3093\u3057\u3001DefineBitsJPEG2 \u304b\u3089\u30c7\u30fc\u30bf\u3092\u629c\u304d\u51fa\u3057\u3066\u3082\u3001\u753b\u50cf\u30d3\u30e5\u30fc\u30a2\u3067\u8868\u793a\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/JPEGTables_and_DefineBitsJPEG2_v2.png\" alt=\"JPEGTables & DefineBitsJPEG2\" \/><\/p>\n<h5 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_6\">  erroneous header<\/h5>\n<ul>\n<li> \u4f46\u3057\u3001FF D9 FF D8 + \u751f\u306e JPEG \u30c7\u30fc\u30bf\u5f62\u5f0f\u3082\u53ef\u80fd\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002(SWF version 8 \u3088\u308a\u524d\u9650\u5b9a\u3067)<\/li>\n<li> \u4ed5\u69d8\u66f8\u3067\u306f FF D9 FF D8 \u3092 erroneous header \u3068\u547c\u3073\u307e\u3059\u3002JPEG chunk \u3067\u306f\u3001FF D9 = EOF (End of Image)\u3001FF D8 = SOI (Start of Image) \u306b\u76f8\u5f53\u3057\u307e\u3059\u3002<\/li>\n<li> \u3053\u306e\u4ed5\u69d8\u306b\u983c\u308c\u3070 JPEG \u5165\u308c\u66ff\u3048\u306f\u3068\u3066\u3082\u7c21\u5358\u3067\u3059\u3002(\u56fa\u5b9a\u306e4byte\u3092\u4ed8\u52a0\u3059\u308b\u306e\u307f)<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG2_erroneous-no-ethnyan_v2.png\" alt=\"\" title=\"DefineBitsJPEG2_erroneous-no-ethnyan_v2\" width=\"538\" height=\"202\" class=\"aligncenter size-full wp-image-8764\" srcset=\"https:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG2_erroneous-no-ethnyan_v2.png 538w, https:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG2_erroneous-no-ethnyan_v2-276x103.png 276w\" sizes=\"auto, (max-width: 538px) 100vw, 538px\" \/><\/p>\n<ul>\n<li> erroneous \u3068\u306f\u3088\u304f\u8a00\u3063\u305f\u3082\u306e\u3067\u3001EOI (End of Image) \u304b\u3089\u59cb\u3081\u308b\u3068\u3044\u3046 JPEG \u7684\u306b\u3042\u308a\u5f97\u306a\u3044\u51fa\u3060\u3057\u306b\u3059\u308b\u4e8b\u3067\u3001\u4eca\u307e\u3067\u306e JPEGTables + DefineBits \u306e\u5f62\u5f0f\u3068\u533a\u5225\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002(SOI \u3068 EOI \u304c \uff12\u3064\u3042\u308c\u3070\u3088\u3044\u8aac\u3082\u3042\u308a\u307e\u3059\u304c\u3001SOI EOI \u3092\u982d\u306b\u4ed8\u3051\u305f\u5834\u5408\u306b\u753b\u50cf\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u7aef\u672b\u3082\u3042\u308b\u306e\u3067\u3001EOI SOI \u3092\u3064\u3051\u308b\u306e\u304c\u7121\u96e3\u3067\u3059)<\/li>\n<\/ul>\n<h4 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_7\"> DefineBitsJPEG3<\/h4>\n<ul>\n<li> SWF version 3 \u3067 JPEG \u753b\u50cf\u306b\u900f\u660e\u5ea6\u306e\u60c5\u5831\u3092\u4ed8\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li> JPEG \u305d\u306e\u3082\u306e\u306f\u900f\u660e\u5ea6\u3092\u6271\u3046\u4e8b\u304c\u51fa\u6765\u306a\u3044\u306e\u3067\u3001JPEG \u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5f8c\u308d\u306b\u3001\u72ec\u7acb\u3057\u3066\u900f\u660e\u5ea6\u306e\u60c5\u5831(BitmapAlphaData)\u3092\u3064\u3051\u308b\u5f62\u5f0f\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\n \u975e\u77e9\u5f62\u753b\u50cf\u3092\u6271\u3046\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002\u4f8b\u3048\u3070\u30ad\u30e3\u30e9\u30af\u30bf\u30fc\u7d75\u3067\u8f2a\u90ed\u306e\u5916\u3092\u900f\u660e\u306b\u3059\u308b\u7b49\u3067\u3059\u3002<\/p>\n<ul>\n<li>  \u900f\u660e\u5ea6\u4ed8\u304dPNG \u753b\u50cf\u3092\u52a3\u5316\u3042\u308a\u3067\u53d6\u308a\u8fbc\u3080\u4e8b\u3067\u3001\u3053\u306e\u30bf\u30b0\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG3_v2.png\" alt=\"DefineBitsJPEG3\" \/><\/p>\n<ul>\n<li> Alpha Data \u306f\u3001\u753b\u50cf\u306e\u5de6\u4e0a\u304b\u3089\u6a2a\u65b9\u5411\u306b scan \u3057\u3066\u3001\u5404\u3005\u306e pixel \u306e\u900f\u660e\u5ea6\u3092 255:\u4e0d\u900f\u660e\u30010:\u900f\u660e\u3001\u305d\u306e\u4e2d\u9593\u3092\u534a\u900f\u660e\u3068\u3057\u305f alpha \u5024 8 bit \u3092\u4e26\u3079\u305f\u914d\u5217\u3067\u8868\u73fe\u3057\u307e\u3059\u3002<\/li>\n<li> \u3053\u306e pixel \u5206(\u7e26\u30b5\u30a4\u30ba\u3068\u6a2a\u30b5\u30a4\u30ba\u3092\u304b\u3051\u305f\u6570)\u306e\u9577\u3055\u306e\u914d\u5217\u3092 Zlib \u5727\u7e2e\u3057\u305f\u3082\u306e\u304c\u3001 DefineBitsJPEG3 \u306e\u30bf\u30b0\u306e\u6700\u5f8c\u306e\u90e8\u5206\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_8\"> SWF \u306e tag \u66f8\u304d\u63db\u3048<\/h3>\n<p>tag \u306e\u4e2d\u8eab\u3092\u66f8\u304d\u5909\u3048\u3066 tag \u306e\u9577\u3055\u304c\u5909\u308f\u3063\u305f\u5834\u5408\u306f\u3001tag \u306e length \u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u66f8\u304d\u63db\u3048\u308b\u3060\u3051\u3067\u306a\u304f\u3001<br \/>\nSWF Header \u306e FileLength \u30d5\u30a3\u30fc\u30eb\u30c9\u3082\u66f8\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u9006\u306b\u3044\u3046\u3068\u305d\u308c\u3060\u3051\u3067\u826f\u3044\u3067\u3059\u3002<br \/>\nFileLength \u3082 4bytes \u56fa\u5b9a\u3067\u51e6\u7406\u306f\u7c21\u5358\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/labs.gree.jp\/blog\/2010\/09\/782\/swf_lengthfield\/\" rel=\"attachment wp-att-1276\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/SWF_LengthField.png\" alt=\"\" title=\"SWF_LengthField\" width=\"592\" height=\"228\" class=\"alignnone size-full wp-image-1276\" srcset=\"https:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/SWF_LengthField.png 592w, https:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/SWF_LengthField-276x106.png 276w\" sizes=\"auto, (max-width: 592px) 100vw, 592px\" \/><\/a><\/p>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_9\"> JPEG \u3092\u5165\u308c\u66ff\u3048\u308b<\/h3>\n<ul>\n<li> \u3053\u3053\u307e\u3067\u306e\u77e5\u8b58\u3092\u5143\u306b\u3001DefineBitsJPEG2 \u306e JPEG \u30c7\u30fc\u30bf\u306e\u5165\u308c\u66ff\u3048\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n<li> \u4ee5\u4e0b\u306e\u753b\u50cf(ethnyan.jpg)\u306b\u5165\u308c\u66ff\u3048\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/08\/ethnyan.jpg\" alt=\"\u3048\u3059\u306b\u3083\u3093\" \/><\/p>\n<h4 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_10\"> \u65b9\u6cd5A) chunk \u4e26\u3073\u66ff\u3048<\/h4>\n<ul>\n<li> JPEG chunk \u3092\u5727\u7e2e\u7528\u30c6\u30fc\u30d6\u30eb\u3068\u305d\u306e\u4ed6(\u30e1\u30bf\u30c7\u30fc\u30bf&\u753b\u50cf\u30c7\u30fc\u30bf)\u306b\u5206\u3051\u3066\u3001DefineBitsJPEG2 \u306e\u30bf\u30b0\u306e\u4e2d\u8eab\u3092\u5165\u308c\u66ff\u3048\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG2-ethnyan_v2.png\" alt=\"DefineBitsJPEG2 ethnyan\" \/><\/p>\n<ul>\n<li> <a href=\"http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/sample\/swfreplacejpeg.php\">http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/sample\/swfreplacejpeg.php<\/a><\/li>\n<li> <a href=\"http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/IO\/SWF\/JPEG.php\">http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/IO\/SWF\/JPEG.php<\/a><\/li>\n<\/ul>\n<pre class=\"superpre php\">\n$swf_jpeg = new IO_SWF_JPEG();\n$swf_jpeg->input($jpegdata);\n$jpeg_table = $swf_jpeg->getEncodingTables();\n$jpeg_image =  $swf_jpeg->getImageData();\n\/\/ 21: DefineBitsJPEG2\n$swf->replaceTagContentByCharacterId(21, $image_id, $jpeg_table.$jpeg_image);<\/pre>\n<ul>\n<li> \u5727\u7e2e\u30c6\u30fc\u30d6\u30eb\u3068\u3001\u305d\u306e\u6b8b\u308a\u306e chunk \u3092\u5225\u3005\u306b\u629c\u51fa\u3057\u3001\u9023\u7d50\u3057\u305f\u30c7\u30fc\u30bf\u3092 DefineBitsJPEG2 \u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u5dee\u3057\u8fbc\u307f\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li> \u30b3\u30de\u30f3\u30c9\u5b9f\u884c<\/li>\n<\/ul>\n<pre class=\"superpre \">\n% php swfreplacejpeg.php orz.swf 1 ethnyan.jpg   > ethnyan.swf<\/pre>\n<ul>\n<li> \u5165\u308c\u66ff\u3048\u524d\u306e SWF (orz.swf)<\/li>\n<\/ul>\n<ul>\n<li> \u5165\u308c\u66ff\u3048\u5f8c\u306e SWF (ethnyan.swf)<\/li>\n<\/ul>\n<h4 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_11\"> \u65b9\u6cd5B) erroneous header \u4ed8\u52a0<\/h4>\n<ul>\n<li> JPEG \u306e\u5148\u982d\u306b\u3001EOI,SOI (FF D9 FF D8 \u306e 4 byte)\u3092\u3064\u3051\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG2_erroneous-ethnyan_v2.png\" alt=\"DefineBitsJPEG2 erroneous ethnyan\" \/><\/p>\n<pre class=\"superpre php\">\n$erroneous_header = pack('CCCC', 0xFF, 0xD9, 0xFF, 0xD8);\n\/\/ 21: DefineBitsJPEG2\n$swf->replaceTagContentByCharacterId(21, $image_id, $erroneous_header.$jpegdata);<\/pre>\n<ul>\n<li>  \u5358\u7d14\u306b erroneous header (FF D9 FF D8) \u3092 JPEG \u306e\u982d\u306b\u3064\u3051\u3066\u3001\u305d\u308c\u3092 DefineBitsJPEG2 \u306b\u5dee\u3057\u8fbc\u307f\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li> \u5165\u308c\u66ff\u3048\u5f8c\u306e SWF (ethnyan-erroneous.swf)<\/li>\n<\/ul>\n<ul>\n<li> A, B \u3069\u3061\u3089\u306e\u65b9\u6cd5\u3067\u3082\u3001\u643a\u5e2f\u7aef\u672b\u3067\u753b\u50cf\u3092\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/li>\n<li> \u5b9f\u969b\u306e SWF \u306e DefineBitsJPEG2 JPEG chunk \u69cb\u9020\u3092\u8abf\u3079\u305f\u9650\u308a\u3067\u306f\u3001\u6614\u306b\u4f5c\u6210\u3055\u308c\u305f SWF \u306f\u65b9\u6cd5A(JPEGTabes+DefineBits\u76f8\u5f53)\u3001\u6700\u8fd1\u4f5c\u6210\u3055\u308c\u305f SWF \u306f\u65b9\u6cd5B(errorneous header \u4ed8\u52a0) \u304c\u591a\u3044\u3088\u3046\u3067\u3059\u3002<\/li>\n<\/ul>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_12\"> JPEG\u753b\u50cf\u3092\u30de\u30b9\u30af\u4ed8\u304d\u3067\u5165\u308c\u66ff\u3048\u308b<\/h3>\n<p>DefineBitsJPEG2 \u306e\u5165\u308c\u66ff\u3048\u3067\u306f\u3001\u80cc\u666f\u306e\u8272\u304c\u5909\u308f\u3063\u305f\u6642\u306b\u90fd\u5408\u306e\u60aa\u3044\u4e8b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li> \u80cc\u666f\u3092\u9752\u306b\u3057\u305f\u5834\u5408 (ethnyan-blue.swf)<\/li>\n<\/ul>\n<p>DefineBitsJPEG3 \u3092\u7528\u3044\u3066\u30de\u30b9\u30af\u4ed8\u304d\u3067\u753b\u50cf\u3092\u5165\u308c\u66ff\u3048\u308b\u4e8b\u3067\u5bfe\u51e6\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30de\u30b9\u30af\u753b\u50cf(ethnyan-mask.gif)\u3092\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/08\/ethnyan-mask.gif\" alt=\"ethnyan mask\" \/><\/p>\n<p>\u3053\u308c\u3092 SWF \u306e Bitmap Alpha Data \u306e\u5f62\u5f0f\u306b\u5909\u63db\u3057\u307e\u3059\u3002<br \/>\nlibgif \u306e gif2rgb \u3092\u5229\u7528\u3059\u308b\u3068\u697d\u3067\u3059\u3002<br \/>\nRGB \u306e R \u6210\u5206\u3092 Alpha Data \u3068\u3057\u3066\u7528\u3044\u308b\u4e8b\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"superpre \">\n% gif2rgb -o ethnyan-mask ethnyan-mask.gif\n% ls -l ethnyan-mask.R\n-rw-r--r-- 1 yoya develop 14400  8\u6708 27 20:53 ethnyan-mask.R<\/pre>\n<p>\u7e26 120 x \u6a2a 120 = 14400 \u3067\u6b63\u3057\u305d\u3046\u3067\u3059\u3002<br \/>\n\u3053\u306e  ethnyan-mask.R \u3092 $alphadata \u3068\u3057\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u51e6\u7406\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li> <a href=\"http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/sample\/swfreplacejpeg.php\">http:\/\/svn.openpear.org\/IO_SWF\/branches\/1.0\/sample\/swfreplacejpeg.php<\/a><\/li>\n<\/ul>\n<pre class=\"superpre php\">\n$tag_code = array(6, 21, 35);\n$jpeg_data = $jpeg_table.$jpeg_image;\n$compressed_alphadata = gzcompress($alphadata);\n$content = pack('v', $image_id).pack('V', strlen($jpeg_data)).$jpeg_data.$compressed_alphadata;\n$tag = array('Code' => 35, 'Content' => $content);\n$ret = $swf->replaceTagByCharacterId($tag_code, $image_id, $tag);<\/pre>\n<ul>\n<li> \u30b3\u30de\u30f3\u30c9\u5b9f\u884c<\/li>\n<\/ul>\n<pre class=\"superpre \">\n% php swfreplacejpeg.php blueorz.swf 1 ethnyan.jpg ethnyan-mask.R > ethnyan.swf<\/pre>\n<ul>\n<li> \u5165\u308c\u66ff\u3048\u306e\u30a4\u30e1\u30fc\u30b8\u56f3<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2010\/09\/DefineBitsJPEG3-ethnyan_v2.png\" alt=\"DefineBitsJPEG3 ethnyan\" \/><\/p>\n<ul>\n<li> \u5165\u308c\u66ff\u3048\u5f8c<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306b\u7c21\u5358\u306b\u5165\u308c\u66ff\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_13\"> \u53c2\u8003URL<\/h3>\n<ul>\n<li> <a href=\"http:\/\/www.m2osw.com\/swf_tag_definebitsjpeg\">http:\/\/www.m2osw.com\/swf_tag_definebitsjpeg<\/a><\/li>\n<li> <a href=\"http:\/\/siisise.net\/jpeg.html#format\">http:\/\/siisise.net\/jpeg.html#format<\/a><\/li>\n<li> <a href=\"http:\/\/pwiki.awm.jp\/~yoya\/?Flash\/SWF\/format\/Jpeg\">http:\/\/pwiki.awm.jp\/~yoya\/?Flash\/SWF\/format\/Jpeg<\/a><\/li>\n<\/ul>\n<h3 id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_header_14\"> \u4e88\u544a<\/h3>\n<p>DefineLossless(\u53ef\u9006\u5727\u7e2e\u30d3\u30c3\u30c8\u30de\u30c3\u30d7\u753b\u50cf), DefineShape(\u30d9\u30af\u30bf\u30fc\u753b\u50cf)\u3001DefineSprite(\u30e0\u30fc\u30d3\u30fc\u30af\u30ea\u30c3\u30d7)\u306e\u3044\u305a\u308c\u304b\u3092\u53d6\u308a\u4e0a\u3052\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u305d\u308c\u3067\u306f\u5931\u793c\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<div class=\"footnote\">\n<p id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnote_1\"><a href=\"#hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnotelink_1\">*1<\/a>: SWF \u30d0\u30fc\u30b8\u30e7\u30f3 8 \u304b\u3089 PNG \u3084 GIF \u3092\u305d\u306e\u307e\u307e\u5165\u308c\u3089\u308c\u308b\u4e8b\u306b\u306a\u308a\u307e\u3057\u305f\u3002BitsJPEG \u3068\u3044\u3046\u30bf\u30b0\u540d\u3068\u5b9f\u60c5\u304c\u5408\u3063\u3066\u3044\u307e\u305b\u3093\u304c\u3002<\/p>\n<p id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnote_2\"><a href=\"#hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnotelink_2\">*2<\/a>: JPEG chunk \u306e\u4e26\u3073\u306f\u3042\u308b\u7a0b\u5ea6\u878d\u901a\u304c\u5229\u304f\u306e\u3067\u3001\u3053\u306e\u56f3\u3068\u7570\u306a\u308b\u4e8b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p id=\"hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnote_3\"><a href=\"#hs_60bb4d35fa8d2057d5f5fe5f2d3213fb_footnotelink_3\">*3<\/a>: \u7a7a\u306e JPEGTables \u3092\u7f6e\u304f\u4e8b\u3067\u3001DefineBits \u306b\u751f\u306e JPEG\u30c7\u30fc\u30bf\u3092\u5165\u308c\u308b\u65b9\u6cd5\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u672a\u691c\u8a3c\u306a\u306e\u3067\u4eca\u56de\u53d6\u308a\u4e0a\u3052\u307e\u305b\u3093<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\u3002\u30e1\u30c7\u30a3\u30a2\u958b\u767a\u306e\u3088\u3084\u3067\u3059\u3002 \u524d\u56de\u3001SWF\u66f8\u304d\u63db\u3048\u306e\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3057\u307e\u3057\u305f\u3002 \u4eca\u56de\u306f\u3001JPEG \u753b\u50cf\u5165\u308c\u66ff\u3048\u306b\u3064\u3044\u3066\u3067\u3059\u3002 SWF\u306b\u304a\u3051\u308b\u753b\u50cf\u306e\u6271\u3044 SWF \u306f\u30d9\u30af\u30bf\u30fc\u753b\u50cf\u3068\u30d3\u30c3\u30c8\u30de\u30c3\u30d7\u753b\u50cf\u306e\u4e21\u65b9\u306b\u5bfe\u5fdc\u3057\u3066\u3044 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[18,20,8],"class_list":["post-782","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-info","tag-flash","tag-jpeg","tag-php"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts\/782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/comments?post=782"}],"version-history":[{"count":3,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":21140,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts\/782\/revisions\/21140"}],"wp:attachment":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/media?parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/categories?post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/tags?post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}