{"id":188,"date":"2012-11-06T16:23:14","date_gmt":"2012-11-06T08:23:14","guid":{"rendered":"http:\/\/blog.sorayuki.net\/?p=188"},"modified":"2013-09-26T15:12:27","modified_gmt":"2013-09-26T07:12:27","slug":"jubeat-analyzer%e5%af%b9%e5%be%85mp3%e5%a5%87%e6%80%aa%e7%9a%84%e8%a1%8c%e4%b8%ba","status":"publish","type":"post","link":"https:\/\/blog.sorayuki.net\/?p=188","title":{"rendered":"Jubeat Analyzer\uff08mciSendString\uff09\u5bf9\u5f85MP3\u5947\u602a\u7684\u884c\u4e3a"},"content":{"rendered":"

\u4f5c\u4e3a\u4e00\u4e2aJubeat\u73a9\u5bb6\uff0c\u5e76\u4e14\u8fd8\u60f3\u8fc7\u90a3\u4e9b\u6bd4\u8f83\u96be\u7684\u66f2\u5b50\uff0c\u600e\u4e48\u6837\u4e5f\u4f1a\u542c\u8bf4\u8fc7Jubeat Analyzer\u5427\u3002\u8fd9\u4e2a\u5de5\u5177\u53ef\u4ee5\u628a\u8857\u673a\u4e0a\u90a3\u4e9b\u8c31\u9762\u5728\u7535\u8111\u4e0a\u91cd\u73b0\u51fa\u6765\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5148\u770b\u6e05\u695a\u5b83\u662f\u600e\u4e48\u56de\u4e8b\uff0c\u7136\u540e\u518d\u53bb\u73a9\uff0c\u589e\u52a0\u8fc7\u5173\u7684\u6982\u7387\u3002<\/p>\n

\u8fd9\u8f6f\u4ef6\u8bfb\u53d6\u7684\u8c31\u9762\u683c\u5f0f\u662fTXT\uff0c\u97f3\u4e50\u662fMP3\u3002\u770b\u5b83\u7684readme\uff0c\u91cc\u9762\u6709\u63d0\u5230\u8c31\u9762\u7684TXT\u7684\u683c\u5f0f\u3002\u91cc\u9762\u6709\u5199\u66f2\u5b50\u7684\u901f\u5ea6\uff08\u6bcf\u5206\u949f\u591a\u5c11\u62cd\uff09\uff0c\u4ece\u4ec0\u4e48\u5730\u65b9\u5f00\u59cb\u662f\u7b2c\u4e00\u62cd\uff0c\u4e4b\u7c7b\u7684\u3002<\/p>\n

\u5b83\u81ea\u5e26\u4e24\u4e2a\u66f2\u5b50\uff0c\u6211\u5f53\u65f6\u7814\u7a76\u4e86\u4e00\u4e0b\u90a3\u4e2atwilight goose\uff0c\u53d1\u73b0\u91cc\u9762\u5199\u7684\u66f2\u5b50\u7b2c\u4e00\u62cd\u5f00\u59cb\u7684\u65f6\u95f4\u662f1747\u6beb\u79d2\u3002\u4f46\u662f\u5b9e\u9645\u4e0a\u6211\u628aMP3\u4e22\u5230Audacity\u91cc\u9762\u6253\u5f00\uff0c\u4ed4\u7ec6\u89c2\u5bdf\uff0c\u7b2c\u4e00\u62cd\u57281.5\u79d2\u5de6\u53f3\u5c31\u5f00\u59cb\u4e86\u3002\"\"<\/a><\/p>\n

\u795e\u5947\u7684\u662f\uff0c\u5728Jubeat Analyzer\u91cc\u9762\u64ad\u653e\u7684\u65f6\u5019\uff0c\u5b83\u7b2c\u4e00\u62cd\u8fd8\u771f\u7684\u662f1.747\u5f00\u59cb\u2026\u2026<\/p>\n

\u56e0\u4e3aJubeat Analyzer\u7684\u8c31\u9762\u91cc\uff0c\u5199\u5173\u4e8e\u8fd9\u4e2a\u201c\u504f\u79fb\u201d \u7684\u65b9\u5f0f\u6709\u4e24\u79cd\uff0c\u624b\u5934\u4e0a\u5176\u4ed6\u8c31\u9762\u57fa\u672c\u90fd\u662f\u201cr=xxx\u201d\u8fd9\u79cd\uff0c\u800c\u5b83\u662f\u201co=xxx\u201d\u8fd9\u79cd\u3002\u4f5c\u8005\u7684readme\u91cc\u8bf4\u5230\uff0c\u5176\u5b9e\u533a\u522b\u53ea\u662f\u540e\u8005\u7684\u6570\u5b57\u6bd4\u524d\u8005\u591a100\u3002<\/p>\n

\u203b\u6ce8\u610f\u70b9 2\uff1a\u300c\u305d\u308c\u3067\u306f\u8b5c\u9762\u306e\u5192\u982d\u306b \"r=840\" \u3068\u66f8\u304f\u306e\u3068 \"o=840\" \u3068\u66f8\u304f\u306e\u3067\u306f\u52b9\u679c\u304c\u5168\u304f\u540c\u3058\u306a\u306e\u3067\u306f\u306a\u3044\u304b\uff1f\uff1f\u300d<\/p>\n

\u3068\u601d\u308f\u308c\u308b\u65b9\u304c\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u3046\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n

\u305d\u306e\u901a\u308a\u306a\u3089\u3088\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u2026\u2026\u2026\u5b9f\u306f\u3001\u524d\u8005\u306f\u5f8c\u8005\u3088\u308a100\u30df\u30ea\u79d2\u8b5c\u9762\u304c\u9045\u308c\u3066\u518d\u751f\u3055\u308c\u307e\u3059\u3002(\u3053\u308c\u4ee5\u4e0a\u306e\u8a73\u7d30\u306f\u3001\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u3092\u3054\u89a7\u304f\u3060\u3055\u3044)<\/p><\/blockquote>\n

 <\/p>\n

\u4f46\u662f\u6211\u603b\u89c9\u5f97\u548c\u8fd9\u4e2a\u6709\u70b9\u76f8\u5173\uff0c\u7814\u7a76\u4e86\u534a\u5929\u65e0\u679c\uff0c\u6700\u540e\u53ea\u662f\u5f88\u6b66\u65ad\u5730\u628a\u6240\u6709\u201co=xxx\u201d\u7684\u66f2\u5b50\u90fd\u5f80\u540e\u63a8200\u6beb\u79d2\uff0c\u8fd9\u6837\u624d\u5dee\u4e0d\u591a\u6709\u70b9\u5bf9\u5934\u3002<\/p>\n

\u4f46\u662f\u8fd9\u4e2a200\u8fd8\u662f\u8ba9\u4eba\u4e0d\u5b89\u5fc3\uff0c\u6bd5\u7adf\u662f\u8bd5\u9a8c\u51fa\u6765\u7684\u4e1c\u897f\uff0c\u800c\u4e14\u6ca1\u6709\u4ec0\u4e48\u4f9d\u636e\uff0c\u6362\u4e86\u5176\u4ed6\u6587\u4ef6\u4f1a\u4e0d\u4f1a\u5c31\u4e0d\u884c\u4e86\u5462\uff0c\u4e4b\u7c7b\u7684\u3002\u4e3a\u4e86\u77e5\u9053\u91cc\u9762\u66f4\u8be6\u7ec6\u7684\u4e1c\u897f\uff0c\u6211\u7ed9\u4f5c\u8005\u5199\u4e86\u7535\u5b50\u90ae\u4ef6\uff0c\u95ee\u4ed6\u5173\u4e8eo=\u7684\u4ed5\u6837\uff0c\u662f\u4e0d\u662f\u6709\u4ec0\u4e48\u72ec\u7279\u7684\u5730\u65b9\u3002\u4f5c\u8005\u56de\u4fe1\u91cc\u770b\u6765\uff0c\u786e\u5b9e\u5c31\u662f100\u6beb\u79d2\u7684\u5dee\u522b\uff0c\u8fd8\u8ba9\u6211\u81ea\u5df1\u4e24\u4e2a\u4e92\u6362\u7740\u8bd5\u8bd5\u770b\u3002\u6211\u628atwilight goose\u91cc\u9762\u7684o=1747\u6539\u6210r=1647\uff0c\u8fd8\u771f\u7684\u64ad\u653e\u8d77\u6765\u548c\u539f\u6765\u65e0\u5f02\u6837\u3002<\/p>\n

\u8fd9\u4e48\u8bf4\uff0c\u95ee\u9898\u51fa\u5728MP3\u4e0a\u9762\u4e86\u3002\u8fd9\u4e24\u4e2aMP3\uff0c\u7528MediaInfo\u53bb\u6253\u5f00\uff0c\u5bf9\u7167\u91cc\u9762\u7684\u4fe1\u606f\uff0c\u4e5f\u6ca1\u53d1\u73b0\u6709\u4ec0\u4e48\u7c7b\u4f3cDelay\u7684\u4e1c\u897f\u3002\u770b\u6765MediaInfo\u4e5f\u4e0d\u591f\u53ef\u9760\u4e86\uff0c\u90a3\u6211\u7528\u5341\u516d\u8fdb\u5236\u7f16\u8f91\u5668\u53bb\u5f00\u8d77\u6765\u770b\u770b\u597d\u4e86<\/p>\n

\"\"<\/a><\/p>\n

\u8fd9\u4e2aID3\u8d6b\u7136\u5199\u5728\u4e0a\u9762\uff0c\u603b\u89c9\u5f97\u5c31\u662f\u5b83\u7684\u95ee\u9898\u4e86\u3002\u56e0\u4e3aJubeat Analyzer\u64ad\u653eMP3\u7528\u7684\u662fmciSendString\u8fd9\u79cd\u63a5\u53e3\uff0c\u5982\u679cMCI\u64ad\u653eMP3\u7684\u65f6\u5019\u628aID3v2\u5f53\u6210\u662f\u6570\u636e\u6d41\u6765\u89e3\u7801\uff0c\u90a3\u4e48\u5c31\u4f1a\u4ea7\u751f\u5947\u602a\u7684\u5ef6\u8fdf\u4e86\u5427\u3002<\/p>\n

\u5728\u8fd9\u4e2a\u7f51\u7ad9<\/a>\u627e\u4e86\u5173\u4e8eID3v2\u7684\u76f8\u5173\u5185\u5bb9\uff0c\u5f97\u77e5ID3v2\u7684\u957f\u5ea6\u662f\u53ef\u53d8\u7684\uff0c\u53ef\u4ee5\u6839\u636e\u7b2c7~10\u5b57\u8282\u53bb\u6389\u6700\u9ad8\u4f4d\uff08\u90a3\u5c31\u662f28\u4f4d\uff09\u4ee5\u540e\u7684\u4e8c\u8fdb\u5236\u6570\u6765\u786e\u5b9a\u957f\u5ea6\u3002\u770btwilight goose\u76847~10\u5b57\u8282\uff0c\u662f00 00 20 25\uff0c\u90a3\u5c31\u662f00\u00d780\u00b3+0x00\u00d780\u00b2+20\u00d780\u00b9+25 = 1025\uff08\u5168\u90e8\u662f16\u8fdb\u5236\uff09\u3002\u8fd9\u6837\u5c31\u662f4133\u5b57\u8282\u3002\u4f46\u662f\u8fd9\u4e9b\u5230\u5e95\u4f1a\u88ab\u5f53\u4f5c\u4ec0\u4e48\u6837\u7684\u6570\u636e\u6d41\u6765\u89e3\u7801\u5462\u3002\u9274\u4e8e\u4ee5\u524d\u5f88\u5e38\u89c1\u7684\u90fd\u662f128kbps\u7684mp3\uff0c\u90a3\u6211\u5c31\u6839\u636e128kbps\u6765\u8ba1\u7b97\uff0c\u4e8e\u662f4133\uff08\u5b57\u8282\uff09\u00d78\uff08\u6bd4\u7279\u6bcf\u5b57\u8282\uff09\u00f7128000\uff08\u6bd4\u7279\u6bcf\u79d2\uff09=0.258\uff08\u79d2\uff09\u3002\u8fd9\u6837\u628a\u6e90\u6587\u4ef6\u5ef6\u8fdf0.258\u79d2\uff0c\u5c31\u662fmciSendString\u64ad\u653e\u51fa\u6765\u7684\u6548\u679c\u4e86\u3002<\/p>\n

\u4f46\u662f\u540e\u6765\u53c8\u9047\u5230\u4e86\u70b9\u95ee\u9898\uff0c\u53c8\u4e0d\u662f\u6240\u6709\u6709ID3v2\u7684\u6587\u4ef6\u90fd\u4f1a\u51fa\u8fd9\u95ee\u9898\u3002\u8003\u8651\u5230\u6ca1\u5ef6\u8fdf\u7684MP3\u662fJubeat OST\u91cc\u9762\u7684MP3\uff0c\u5236\u4f5c\u7684\u4eba\u8fd8\u5d4c\u5165\u4e86\u6807\u9898\u56fe\u7247\u4e4b\u7c7b\uff0c \u4f3c\u4e4eID3v2\u90fd\u633a\u5927\u7684\uff0c\u2026\u2026\u4e8e\u662f\u731c\u60f3\u53ef\u80fd\u662f\u89e3\u7801\u7684\u65f6\u5019\u9047\u5230\u4e86\u4ec0\u4e48\u95ee\u9898\u800c\u8df3\u8fc7\u4e86\u3002\u4e8e\u662f\u53bb\u53c2\u8003\u4e86\u4e00\u4e0b\u8fd9\u4e2a\u7f51\u7ad9<\/a>\u4e0a\u7684MP3\u6bcf\u4e2a\u5e27\u7684\u7ec4\u6210\uff0c\u5f97\u77e5\u5934\u90e8\u4fe1\u606f\u662f4\u4e2a\u5b57\u8282\uff0c\u4e4b\u540e\u53ef\u80fd\u6709\u53ef\u80fd\u6ca1\u67094\u4e2a\u5b57\u8282\u7684CRC\uff0c\u6709\u6ca1\u6709CRC\u662f\u6839\u636e\u5934\u90e8\u4fe1\u606f\u51b3\u5b9a\uff0c\u7136\u540e\u662f\u6570\u636e\u3002\u5982\u679cID3v2\u88ab\u5f53\u4f5c\u6570\u636e\u6765\u89e3\u7801\u7684\u8bdd\uff0c\"ID3\"\u548c\u540e\u9762\u4e00\u4e2a\u5b57\u8282\u88ab\u5f53\u4f5c\u5934\u90e8\u4fe1\u606f\u3002\u8fd9\u6837\u5c31\u53d8\u6210\u53ef\u4ee5\u89e3\u91ca\u4e3a\u201c\u6709CRC\u4fdd\u62a4\u201d\u3002\u7136\u540e\u63a5\u4e0b\u6765\u56db\u4e2a\u5b57\u8282\u53d8\u6210CRC\uff0c\u5176\u4e2d\u8fd9\u56db\u4e2a\u5b57\u8282\u91cc\u540e\u4e24\u4e2a\u5b57\u8282\u5c31\u662fID3v2\u5927\u5c0f\u7684\u524d\u4e24\u4e2a\u5b57\u8282\u2026\u2026\u597d\u5427\u5927\u6982\u77e5\u9053\u4e86\uff0c\u5982\u679cID3v2\u6bd4\u8f83\u5c0f\uff0c\u53ea\u5360\u7528\u4e86\u4e24\u4e2a\u5b57\u8282\uff0c\u90a3\u4e48\u524d\u4e24\u4e2a\u5b57\u8282\u5c31\u662f0\uff0c\u8fd9\u6837\u7684\u8bdd\u5b83\u5c31\u8ba4\u4e3a\u6ca1\u6709CRC\u4fe1\u606f\uff0c\u4e8e\u662f\u6570\u636e\u5305\u662f\u597d\u662f\u574f\u4e0d\u77e5\u9053\uff0c\u89e3\u7801\u4e4b\u3002\u5982\u679cID3v2\u6bd4\u8f83\u5927\uff0c\u5360\u7528\u4e863\u4e2a\u62164\u4e2a\u5b57\u8282\uff0c\u8fd9\u6837\u5f53\u4f5c\u5e27\u6570\u636e\u6765\u89e3\u91ca\u7684\u8bddCRC\u5c31\u4e0d\u662f\u51680\u4e86\u3002\u56e0\u4e3a\u5b83\u672c\u6765\u5c31\u4e0d\u662f\u5e27\u6570\u636e\uff0cCRC\u600e\u4e48\u53ef\u80fd\u4f1a\u80fd\u901a\u8fc7\uff08\u4e0d\u4f1a\u90a3\u4e48\u72d7\u5c4e\u8fd0\u5427-_,-\uff09\uff0c\u4e8e\u662f\u6b64\u65f6\u8fd9\u4e2a\u5e27\u5c31\u88ab\u8ba4\u4e3a\u662f\u574f\u7684\uff0c\u8df3\u8fc7\uff0c\u4e8e\u662f\u5ef6\u8fdf\u5c31\u6ca1\u4e86\u3002<\/p>\n

\u7136\u540e\u6211\u5199\u4e86\u8fd9\u4e48\u4e00\u6bb5\u4ee3\u7801\u6765\u8ba1\u7b97\u5b83\u4ea7\u751f\u7684\u5ef6\u8fdf\u7684\u5927\u5c0f\u3002\u5f53\u4f5c128kbps\u6765\u8ba1\u7b97\u7684\u3002\u56e0\u4e3a\u5b9e\u5728\u4e0d\u77e5\u9053\u5b83\u5230\u5e95\u662f\u600e\u4e48\u8bc6\u522b\u7801\u7387\u7684\uff0c\u6bd5\u7adf\u5982\u679c\u4ece\u5e27\u5934\u91cc\u9762\u62bd\u53d6\u7801\u7387\u4fe1\u606f\u7684\u8bdd\uff0c\u7b97\u51fa\u6765\u7684\u5ef6\u8fdf\u8d85\u5927\uff0c\u611f\u89c9\u4e0d\u5bf9\u5934\u3002\u800c\u4e14\u5e27\u5934\u53c8\u6ca1\u6709\u8fde\u7eed11\u4e2a\u4e8c\u8fdb\u52361\u6765\u5f53\u4f5c\u540c\u6b65\u6807\u8bb0\u3002<\/p>\n

\u4e8e\u662f\u8fd9\u6bb5\u4e0d\u77e5\u9053\u7b97\u51fa\u6765\u5ef6\u8fdf\u662f\u5bf9\u662f\u9519\u7684\u4ee3\u7801\u957f\u5f97\u8fd9\u6837\uff1a<\/p>\n

double CheckMp3_mciSendStringWorkAround(std::istream& mp3file)\r\n{\r\n    char id3[3];\r\n\r\n    mp3file.read(id3, 3);\r\n    if(mp3file.gcount() != 3) throw MyException(\"Fail to read id3v2 tag\");\r\n\r\n    if(std::equal(id3, id3 + 3, \"ID3\")) {\r\n        \/\/start workaround\r\n        \/\/skip 3 byte, advanced to id3v2 frame size\r\n        mp3file.ignore(3);\r\n        unsigned char id3v2size[4];\r\n\r\n        mp3file.read(reinterpret_cast<char*>(id3v2size), 4);\r\n        if (mp3file.gcount() != 4) throw MyException(\"Fail to read id3v2 size\");\r\n\r\n        int nId3v2size = id3v2size[0] * 0x80 * 0x80 * 0x80\r\n                       + id3v2size[1] * 0x80 * 0x80\r\n                       + id3v2size[2] * 0x80\r\n                       + id3v2size[3];\r\n\r\n        int id3end = nId3v2size + 10;\r\n        mp3file.seekg(0, std::ios::beg);\r\n        char buf[8]; \/\/frame header + crc\r\n        mp3file.read(buf, 8);\r\n        if (mp3file.gcount() != 8) throw MyException(\"Fail to read mp3 frames\");\r\n        if (buf[1] & 1) {\/\/check if there are crc\r\n            nId3v2size -= 4;\r\n        } else {\r\n            if ( (buf[4] | buf[5] | buf[6] | buf[7]) == 0 )\r\n                nId3v2size -= 8;\r\n            else\r\n                return 0;\r\n        }\r\n\r\n        \/\/get duration\r\n        return double(nId3v2size) * 8 \/ 128000;\r\n    } else\r\n        \/\/no need to work around\r\n        return 0;\r\n}<\/pre>\n
\u4e8e\u662fmciSendString\u64ad\u653eMP3\u7684\u65f6\u5019\u7531\u4e8eID3v2\u800c\u4ea7\u751f\u7684\u5ef6\u8fdf\uff0c\u53ef\u4ee5\u8ba1\u7b97\u4e86\u3002<\/p>\n
\u90a3\u4e2a128000\u2026\u2026\u5514\uff0c\u60f3\u4e0d\u5230\u66f4\u597d\u7684\u529e\u6cd5\u731c\u6d4b\u5b83\u5185\u90e8\u5230\u5e95\u6de6\u4e86\u4ec0\u4e48\u3002\u53ea\u80fd\u8fd9\u4e48\u52c9\u5f3a\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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