[問題] mp3tag

看板C_and_CPP (C/C++)作者wowrz (ㄚB哥)時間16年前 (2009/05/08 18:26)推噓0(0推 0噓 2→)

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#include <stdio.h> #include <string.h> #include "id3tag.h" ID3TAGDATA id3tag; static void id3_pad(char *string, int length) { int l; l=strlen(string); while(l<length) { string[l] = ' '; l++; } string[l]='\0'; } void id3_inittag(ID3TAGDATA *tag) { strcpy( tag->title, ""); /* 複製字串*/ strcpy( tag->artist, "");/* 複製字串*/ strcpy( tag->album, "");/* 複製字串*/ strcpy( tag->year, ""); /* 複製字串*/ strcpy( tag->comment, "");/* 複製字串*/ strcpy( tag->genre, "); /* unset genre */ tag->track = 0; tag->valid = 0; /* not ready for writing*/ } /* * build an ID3 tag from temporary fields */ void id3_buildtag(ID3TAGDATA *tag) { strcpy(tag->tagtext,"TAG"); id3_pad( tag->title, 30); strncat( tag->tagtext, tag->title,30); id3_pad( tag->artist, 30); strncat( tag->tagtext, tag->artist,30); id3_pad( tag->album, 30); strncat( tag->tagtext, tag->album,30); id3_pad( tag->year, 4); strncat( tag->tagtext, tag->year,4); id3_pad( tag->comment, 30); strncat( tag->tagtext, tag->comment,30); id3_pad( tag->genre, 1); strncat( tag->tagtext, tag->genre,1); if( tag->track != 0 ) { tag->tagtext[125] = '\0'; tag->tagtext[126] = tag->track; } tag->valid = 1; /* ready for writing*/ } int id3_writetag(char* filename, ID3TAGDATA *tag) { FILE* f; if( ! tag->valid ) return -1; f=fopen(filename,"rb+"); if(!f) return -1; fseek(f,0,SEEK_END); fwrite(tag->tagtext,1,128,f); fclose(f); return 0; } int genre_last=147; char *genre_list[]={ "Blues", "Classic Rock", "Country", "Dance", "Disco", "Funk", "Grunge", "Hip-Hop", "Jazz", "Metal", "New Age", "Oldies", "Other", "Pop", "R&B", "Rap", "Reggae", "Rock", "Techno", "Industrial", "Alternative", "Ska", "Death Metal", "Pranks", "Soundtrack", "Euro-Techno", "Ambient", "Trip-Hop", "Vocal", "Jazz+Funk", "Fusion", "Trance", "Classical", "Instrumental", "Acid", "House", "Game", "Sound Clip", "Gospel", "Noise", "AlternRock", "Bass", "Soul", "Punk", "Space", "Meditative", "Instrumental Pop", "Instrumental Rock", "Ethnic", "Gothic", "Darkwave", "Techno-Industrial", "Electronic", "Pop-Folk", "Eurodance", "Dream", "Southern Rock", "Comedy", "Cult", "Gangsta", "Top 40", "Christian Rap", "Pop/Funk", "Jungle", "Native American", "Cabaret", "New Wave", "Psychadelic", "Rave", "Showtunes", "Trailer", "Lo-Fi", "Tribal", "Acid Punk", "Acid Jazz", "Polka", "Retro", "Musical", "Rock & Roll", "Hard Rock", "Folk", "Folk/Rock", "National Folk", "Swing", "Fast-Fusion", "Bebob", "Latin", "Revival", "Celtic", "Bluegrass", "Avantgarde", "Gothic Rock", "Progressive Rock", "Psychedelic Rock", "Symphonic Rock", "Slow Rock", "Big Band", "Chorus", "Easy Listening", "Acoustic", "Humour", "Speech", "Chanson", "Opera", "Chamber Music", "Sonata", "Symphony", "Booty Bass", "Primus", "Porn Groove", "Satire", "Slow Jam", "Club", "Tango", "Samba", "Folklore", "Ballad", "Power Ballad", "Rhythmic Soul", "Freestyle", "Duet", "Punk Rock", "Drum Solo", "A capella", "Euro-House", "Dance Hall", "Goa", "Drum & Bass", "Club House", "Hardcore", "Terror", "Indie", "BritPop", "NegerPunk", "Polsk Punk", "Beat", "Christian Gangsta", "Heavy Metal", "Black Metal", "Crossover", "Contemporary C", "Christian Rock", "Merengue", "Salsa", "Thrash Metal", "Anime", "JPop", "SynthPop", }; 這是id3tag v1的初步的語法,我想請教的 1.↑的code中是如何把mp3的tag取出?(看到fopen開啟filename,但filename是指到哪?) 2.rb是0 1訊號那rb+是? (若是wma,資料夾要放到哪副檔名要改?) 2.id3 v2版有同步歌詞的功能&&可以存入專輯圖片,想知道各位會怎麼處理? -- (/ .\)=y-~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.135.43.118