修改mp3的id3 tag内容，mp3id3tag内容,#! /usr/bin/

修改mp3的id3 tag内容，mp3id3tag内容,#! /usr/bin/

#! /usr/bin/env python# encoding: utf8import sysimport osimport binasciiimport jsondef getId3Info(fp):    id3Tags = []    frameIds = ['AENC', 'APIC', 'COMM', 'COMR', 'ENCR', 'ETC0', 'GEOB', 'GRID', 'IPLS',                'MCDI', 'MLLT', 'OWNE', 'PRIV', 'PCNT', 'POPM', 'POSS', 'RBUF', 'RVAD',                'RVRB', 'SYLT', 'SYTC', 'TALB', 'TBPM', 'TCOM', 'TCON', 'TCOP', 'TDAT',                'TDLY', 'TENC', 'TEXT', 'TFLT', 'TIME', 'TIT1', 'TIT2', 'TIT3', 'TKEY',                'TLAN', 'TLEN', 'TMED', 'TOAL', 'TOFN', 'TOLY', 'TOPE', 'TORY', 'TOWM',                'TPE1', 'TPE2', 'TPE3', 'TPE4', 'TPOS', 'TPUB', 'TRCK', 'TRDA', 'TRSN',                'TRSO', 'TSIZ', 'TSRC', 'TSSE', 'TYER', 'TXXX', 'UFID', 'USER', 'USLT',                'WCOM', 'WCOP', 'WOAF', 'WOAR', 'WOAS', 'WORS', 'WPAY', 'WPUB', 'WXXX']    fp.read(10)    while True:        id3Info = {}        tag = fp.read(4)        if tag not in frameIds:            break        sizePos = fp.tell()        binSize = fp.read(4)        size = int(binascii.b2a_hex(binSize), 16)        fp.read(2)        conPos = fp.tell()        cont = fp.read(size)        id3Info['sizePos'] = sizePos        id3Info['size'] = size        id3Info['tag'] = tag        id3Info['conPos'] = conPos        id3Info['con'] = cont        id3Tags.append(id3Info)    return id3Tagsdef getCon(id3Info, tag):    for info in id3Info:        if tag == info['tag']:            return info['con']def getConPos(id3Info, tag):    for info in id3Info:        if tag == info['tag']:            return info['conPos']def getConSize(id3Info, tag):    for info in id3Info:        if tag == info['tag']:            return info['size']def getConSizePos(id3Info, tag):    for info in id3Info:        if tag == info['tag']:            return info['sizePos']def writeInfo(path, tag, newCon):    fp = open(path, 'rb')    id3Info = getId3Info(fp)    fp.seek(0)    oldCon = getCon(id3Info, tag)    size = getConSize(id3Info, tag)    sizePos = getConSizePos(id3Info, tag)    tmpSize = str(len(newCon) + 1)    while(len(tmpSize) < 8):        tmpSize = '0' + tmpSize    newSize = binascii.a2b_hex(tmpSize)    split = binascii.a2b_hex('0000')    newCon = binascii.a2b_hex('00') + newCon    pre = fp.read(sizePos)    fp.seek(getConPos(id3Info, tag) + size)    last = fp.read()    newFile = pre + newSize + split + newCon + last    p,n = os.path.split(path)    b,l = os.path.splitext(n)    newPath = os.path.join(p, b + "_" + newCon.strip('\x00') + l)    newFp = open(newPath, 'wb')    newFp.write(newFile)    newFp.close()    fp.close()    return newPathif __name__ == '__main__':    if len(sys.argv) < 3:        print "用法: getGenre.py 新的genre mp3文件"        exit()    newCon = sys.argv[1]    abspath = os.path.abspath(sys.argv[2])    ret = writeInfo(abspath, "TCON", newCon)    print ret + " OK"