int Tune::getID3v1(unsigned char offset, char* infobuffer)
{
// pause track if already playing
if (isPlaying())
{
pauseMusic();
playState = pause;
}
// save current position for later
unsigned long currentPosition = track.curPosition();
// save the value corresponding to the needed frame for later
tagFrame = offset;
unsigned char ID3v1[3]; // array to store the 'TAG' identifier of ID3v1 tags
unsigned long tagPosition = track.fileSize(); // skip to end of file
// skip to tag start
tagPosition -= 128;
track.seekSet(tagPosition);
track.read(ID3v1, 3); // read the first 3 characters available
// if they're 'TAG'
if (ID3v1[0] == 'T' && ID3v1[1] == 'A' && ID3v1[2] == 'G')
{
// we found an ID3v1 tag !
// let's go find the frame we're looking for
tagPosition = (track.curPosition() + offset);
track.seekSet(tagPosition);
track.read(infobuffer, 30); // read the tag and store it
// go back to where we stopped and enable playback again
track.seekSet(currentPosition);
if (isPlaying())
{
resumeMusic();
playState = playback;
}
return 1;
}
// if they're not
else
{
// go back to where we stopped and enable playback again
track.seekSet(currentPosition);
if (isPlaying())
{
resumeMusic();
playState = playback;
}
return 0;
}
}
///事件音乐设置
void AudioManager::onEventOptionMusic(EventCustom* event)
{
bool isOpen = event->getUserData();
setbIsOpenMusic(isOpen);
UserDefault::getInstance()->setBoolForKey("s_music_open", isOpen);
DLog::d("music isOpen", isOpen);
//设置背景音乐
if(isOpen)
{
resumeMusic();
}
else
{
pauseMusic();
}
setbIsOpenMusic(isOpen);
}
int Tune::getID3v2(char* infobuffer)
{
// pause track if already playing
if (isPlaying())
{
pauseMusic();
playState = pause;
}
// save current position for later
unsigned long currentPosition = track.curPosition();
unsigned char ID3v2[3]; // pointer to the first 3 characters we read in
track.seekSet(0);
track.read(ID3v2, 3);
// if the first 3 characters are ID3 then we have an ID3v2 tag
// we now need to find the length of the whole tag
if (ID3v2[0] == 'I' && ID3v2[1] == 'D' && ID3v2[2] == '3')
{
// Read the version of the tag
track.read(pb, 1);
int tagVersion = pb[0];
// skip 2 bytes we don't need and read the last 4 bytes of the header
// that contain the tag's length
track.read(pb, 2);
track.read(pb, 4);
// to combine these 4 bytes together into a single value, we have to
// shift one other to get it into its correct position
// a quirk of the spec is that the MSb of each byte is set to 0
length = (((unsigned long) pb[0] << (7*3)) + ((unsigned long) pb[1] << (7*2)) + ((unsigned long) pb[2] << (7)) + pb[3]);
if (tagVersion == 2)
{
findv22(infobuffer);
// go back to where we stopped and enable playback again
track.seekSet(currentPosition);
if (isPlaying())
{
resumeMusic();
playState = playback;
}
return 2;
}
else if (tagVersion == 3)
{
findv23(infobuffer);
// go back to where we stopped and enable playback again
track.seekSet(currentPosition);
if (isPlaying())
{
resumeMusic();
playState = playback;
}
return 3;
}
else
{
// go back to where we stopped and enable playback again
track.seekSet(currentPosition);
if (isPlaying())
{
resumeMusic();
playState = playback;
}
return 9;
}
}
else
{
// go back to where we stopped and enable playback again
track.seekSet(currentPosition);
if (isPlaying())
{
resumeMusic();
playState = playback;
}
return 0;
}
}
void GameApp::Resume()
{
resumeMusic();
}
