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id3tag.cpp
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id3tag.cpp
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#include "id3tag.h"
#include <QDebug>
ID3tag::ID3tag(QObject *parent) : QObject(parent)
{
}
ID3tag::~ID3tag()
{
delete fileN;
delete fileS;
delete fileImage;
delete dStreamS;
delete dStream;
// delete tStream;
}
ID3tag::ID3tag(QString fileName)
{
mp3FileName=fileName;
mp3FileNameTmp=fileName+QString(".tmp");
fileS=new QFile(mp3FileName);
fileS->open(QIODevice::ReadOnly);
fileN=new QFile(mp3FileNameTmp);
fileN->open(QIODevice::WriteOnly);
dStream=new QDataStream(fileN);
memset(&tagHeader,0,sizeof(tagHeader));
memset(&titleHeader,0,sizeof(titleHeader));
memset(&artistHeader,0,sizeof(artistHeader));
memset(&albumHeader,0,sizeof(albumHeader));
memset(&picHeader,0,sizeof(picHeader));
tagHeader.identifier[0]='I';
tagHeader.identifier[1]='D';
tagHeader.identifier[2]='3';
tagHeader.version[0]=0x03;
titleHeader.frameID[0]='T';titleHeader.frameID[1]='I';titleHeader.frameID[2]='T';titleHeader.frameID[3]='2';
artistHeader.frameID[0]='T';artistHeader.frameID[1]='P';artistHeader.frameID[2]='E';artistHeader.frameID[3]='1';
albumHeader.frameID[0]='T';albumHeader.frameID[1]='A';albumHeader.frameID[2]='L';albumHeader.frameID[3]='B';
picHeader.frameID[0]='A';picHeader.frameID[1]='P';picHeader.frameID[2]='I';picHeader.frameID[3]='C';
//获取mp3音频内容
dStreamS =new QDataStream(fileS);
dStreamS->readRawData((char*)&tagHeaderOld,10);
int oldHeaderSize=128*128*128*tagHeaderOld.size[0]+128*128*tagHeaderOld.size[1]+128*tagHeaderOld.size[2]+tagHeaderOld.size[3];
fileS->seek(10+oldHeaderSize);
mp3File=fileS->readAll();
}
void ID3tag::setTitle(QString t)
{
title=t;
titleSize=2*title.size()+3;
titleHeader.size[3]=titleSize;
}
void ID3tag::setArtist(QString a)
{
artist=a;
artistSize=2*a.size()+3;
artistHeader.size[3]=artistSize;
}
void ID3tag::setAlbum(QString a)
{
album=a;
albumSize=2*album.size()+3;
albumHeader.size[3]=albumSize;
}
void ID3tag::setPic(QString imageFileName)
{
fileImage=new QFile(imageFileName);
fileImage->open(QIODevice::ReadOnly);
image=fileImage->readAll();
memset(mimeInfo,0,14);
char tmp[14]={0x00,0x69,0x6D,0x61,0x67,0x65,0x2F,0x6A,0x70,0x65,0x67,0x00,0x03,0x00};
memcpy(mimeInfo,tmp,14);
picSize=image.size()+14;
picHeader.size[0]=picSize/(256*256*256);
picHeader.size[1]=picSize%(256*256*256)/(256*256);
picHeader.size[2]=picSize%(256*256*256)%(256*256)/256;
picHeader.size[3]=picSize%(256*256*256)%(256*256)%256;
}
void ID3tag::doJob()
{
qDebug()<<"title QString:"<<title;
qDebug()<<title.size();
qDebug()<<sizeof(title);
for(int i=0;i<2*title.size();i++)
{
qDebug()<<title.data()[i];
}
qDebug()<<"artist QString:"<<artist;
qDebug()<<artist.size();
qDebug()<<sizeof(artist);
for(int i=0;i<2*artist.size();i++)
{
qDebug()<<artist.data()[i];
}
uchar unicodeBom[3]={0x01,0xFF,0xFE};
int size=40+titleSize+artistSize+albumSize+picSize;
tagHeader.size[0]=size/(128*128*128);
tagHeader.size[1]=size%(128*128*128)/(128*128);
tagHeader.size[2]=size%(128*128*128)%(128*128)/128;
tagHeader.size[3]=size%(128*128*128)%(128*128)%128;
dStream->writeRawData((char*)&tagHeader,10);
dStream->writeRawData((char*)&titleHeader,10);
dStream->writeRawData((char*)unicodeBom,3);
dStream->writeRawData((char*)title.data(),title.size()*2);
dStream->writeRawData((char*)&artistHeader,10);
dStream->writeRawData((char*)unicodeBom,3);
dStream->writeRawData((char*)artist.data(),artist.size()*2);
dStream->writeRawData((char*)&albumHeader,10);
dStream->writeRawData((char*)unicodeBom,3);
dStream->writeRawData((char*)album.data(),album.size()*2);
dStream->writeRawData((char*)&picHeader,10);
dStream->writeRawData(mimeInfo,14);
dStream->writeRawData((char*)image.data(),image.size());
dStream->writeRawData((char*)mp3File.data(),mp3File.size());
fileImage->close();
fileN->close();
fileS->close();
fileS->remove();
fileN->rename(mp3FileName);
emit finished();
}