inline bool KNMusicTagM4a::getBox(QDataStream &musicDataStream,
KNMusicTagM4a::M4ABox &box,
bool ignoreContent)
{
//Clear the box data.
clearBox(box);
//Set the box properties to independet box.
box.independence=true;
//Get the size of the box, reduce the 8 bytes size of itself and the name.
musicDataStream>>box.size;
box.size-=8;
//Generate the name field.
char nameField[5]={0};
//Get the name of the box.
if(musicDataStream.readRawData(nameField, 4)==-1)
{
//If you cannot read the data, then it's failed to read the box.
return false;
}
//Save the box name.
box.name=nameField;
//Get the content, or else we will simply get back.
if(ignoreContent)
{
box.independence=false;
//Skip the box size data.
return musicDataStream.skipRawData(box.size);
}
//Allocate memory to store the box data.
box.data=new char[box.size];
//Read the new data.
return musicDataStream.readRawData(box.data, box.size);
}
QWidget *MosaicAreaTool::getToolBarWidget() {
m_latLineEdit = new QLineEdit();
m_latLineEdit->setValidator(new QDoubleValidator(-90.0, 90.0, 99, this));
m_lonLineEdit = new QLineEdit();
m_lonLineEdit->setValidator(new QDoubleValidator(this));
m_areaLineEdit = new QLineEdit();
m_areaLineEdit->setValidator(new QDoubleValidator(this));
m_areaLineEdit->setText("10000");
QLabel *latLabel = new QLabel("Latitude");
QLabel *lonLabel = new QLabel("Longitude");
QLabel *areaLabel = new QLabel("Size (meters)");
areaLabel->setToolTip("This is the width and the height of the box");
// Create the action buttons
QPushButton *okButton = new QPushButton("Update Box");
connect(okButton, SIGNAL(clicked()), this, SLOT(userChangedBox()));
QPushButton *clearButton = new QPushButton("Clear Box");
connect(clearButton, SIGNAL(clicked()), this, SLOT(clearBox()));
// Put the buttons in a horizontal orientation
QHBoxLayout *actionLayout = new QHBoxLayout();
actionLayout->addWidget(latLabel);
actionLayout->addWidget(m_latLineEdit);
actionLayout->addWidget(lonLabel);
actionLayout->addWidget(m_lonLineEdit);
actionLayout->addWidget(areaLabel);
actionLayout->addWidget(m_areaLineEdit);
actionLayout->addWidget(okButton);
actionLayout->addWidget(clearButton);
actionLayout->addStretch(1);
actionLayout->setMargin(0);
QWidget *toolBarWidget = new QWidget;
toolBarWidget->setLayout(actionLayout);
return toolBarWidget;
}
void MosaicAreaTool::mouseButtonRelease(QPointF mouseLoc, Qt::MouseButton s) {
if(!isActive())
return;
if(s == Qt::LeftButton) {
TProjection *tproj = (TProjection *) getWidget()->getProjection();
if(tproj && getWidget()->getView()->sceneRect().contains(mouseLoc)) {
if(tproj->SetCoordinate(mouseLoc.x(), -1 * mouseLoc.y())) {
if(m_drawBox != NULL) {
clearBox();
}
m_latLineEdit->setText(QString::number(tproj->Latitude(), 'g', 10));
m_lonLineEdit->setText(QString::number(tproj->Longitude(), 'g', 10));
userChangedBox();
}
}
}
}
void MainWindow::on_dropSpreadAbilites_pressed()
{
clearBox(ui->comboBoxStrength);
clearBox(ui->comboBoxDexterity);
clearBox(ui->comboBoxConstitution);
clearBox(ui->comboBoxIntelligence);
clearBox(ui->comboBoxWisdom);
clearBox(ui->comboBoxCharisma);
listOfCandidatsToBecomeAbility = trueListOfCandidatsToBecomeAbility;
setupComboBoxes(ui->comboBoxStrength, &listOfCandidatsToBecomeAbility);
setupComboBoxes(ui->comboBoxDexterity, &listOfCandidatsToBecomeAbility);
setupComboBoxes(ui->comboBoxConstitution, &listOfCandidatsToBecomeAbility);
setupComboBoxes(ui->comboBoxIntelligence, &listOfCandidatsToBecomeAbility);
setupComboBoxes(ui->comboBoxWisdom, &listOfCandidatsToBecomeAbility);
setupComboBoxes(ui->comboBoxCharisma, &listOfCandidatsToBecomeAbility);
}
void MosaicAreaTool::userChangedBox() {
bool latValid = false;
bool lonValid = false;
bool areaValid = false;
if(!m_latLineEdit || !m_lonLineEdit || !m_areaLineEdit) {
clearBox();
return;
}
QString latitude = m_latLineEdit->text();
if(latitude != "Null" && latitude != "") {
int cursorPos = 0;
QValidator::State validLat =
m_latLineEdit->validator()->validate(latitude, cursorPos);
if(validLat != QValidator::Acceptable) {
QMessageBox::warning(getWidget(), "Error",
"Latitude value must be in the range -90 to 90",
QMessageBox::Ok, QMessageBox::NoButton,
QMessageBox::NoButton);
}
else {
latValid = true;
}
}
//Validate longitude value
QString longitude = m_lonLineEdit->text();
if(longitude != "Null" && longitude != "" && latValid) {
int cursorPos = 0;
QValidator::State validLon =
m_lonLineEdit->validator()->validate(longitude, cursorPos);
if(validLon != QValidator::Acceptable) {
QMessageBox::warning(getWidget(), "Error",
"Longitude value invalid",
QMessageBox::Ok, QMessageBox::NoButton,
QMessageBox::NoButton);
}
else {
lonValid = true;
}
}
QString areaString = m_areaLineEdit->text();
if(areaString != "Null" && areaString != "" && latValid && lonValid) {
int cursorPos = 0;
QValidator::State validArea =
m_areaLineEdit->validator()->validate(areaString, cursorPos);
if(validArea != QValidator::Acceptable) {
QMessageBox::warning(getWidget(), "Error",
"Area value invalid",
QMessageBox::Ok, QMessageBox::NoButton,
QMessageBox::NoButton);
}
else {
areaValid = true;
}
}
if(latValid && lonValid && areaValid) {
double lat = IString(latitude.toStdString()).ToDouble();
double lon = IString(longitude.toStdString()).ToDouble();
double area = IString(areaString.toStdString()).ToDouble();
Projection *projection = getWidget()->getProjection();
Projection::ProjectionType ptype = projection->projectionType();
if (projection && ptype == Projection::Triaxial) {
TProjection * tproj = (TProjection *) projection;
if (tproj->SetGround(lat, lon)) {
QPointF scenePos(projection->XCoord(), -1 * projection->YCoord());
QRectF sceneRect(getWidget()->getView()->sceneRect());
if(sceneRect.contains(scenePos)) {
if(m_box != NULL) {
clearBox();
}
Distance distance(area, Distance::Meters);
QPolygonF boxPoly;
QRectF latLonRange = calcLatLonRange(QPointF(lon, lat), distance);
double xStep = latLonRange.width() / 100.0;
double yStep = latLonRange.height() / 100.0;
bool hasPole = (latLonRange.top() == -90 ||
latLonRange.bottom() == 90);
double yPos = latLonRange.top();
if (yPos != -90) {
for(double xPos = latLonRange.left();
xPos <= latLonRange.right();
xPos += xStep) {
if (tproj->SetGround(yPos, xPos)) {
QPointF pos(tproj->XCoord(), -1 * tproj->YCoord());
boxPoly << pos;
}
}
}
double xPos = latLonRange.right();
for (double yPos = latLonRange.top();
!hasPole && yPos <= latLonRange.bottom();
yPos += yStep) {
if (tproj->SetGround(yPos, xPos)) {
QPointF pos(tproj->XCoord(), -1 * tproj->YCoord());
boxPoly << pos;
}
}
yPos = latLonRange.bottom();
if (yPos != 90) {
for (double xPos = latLonRange.right();
xPos >= latLonRange.left();
xPos -= xStep) {
if (tproj->SetGround(yPos, xPos)) {
QPointF pos(tproj->XCoord(), -1 * tproj->YCoord());
boxPoly << pos;
}
}
}
xPos = latLonRange.left();
for (double yPos = latLonRange.bottom();
!hasPole && yPos >= latLonRange.top();
yPos -= yStep) {
if (tproj->SetGround(yPos, xPos)) {
QPointF pos(tproj->XCoord(), -1 * tproj->YCoord());
boxPoly << pos;
}
}
if (boxPoly.size() > 0) {
boxPoly << boxPoly[0];
m_box = new QGraphicsPolygonItem(boxPoly);
m_box->setZValue(DBL_MAX);
getWidget()->getScene()->addItem(m_box);
getWidget()->getView()->centerOn(scenePos);
}
}
else {
QString message = "Lat/Lon not within this view.";
QMessageBox::information(getWidget(), "Cannot Calculate Box",
message, QMessageBox::Ok);
}
}
}
}
}
bool KNMusicTagM4a::parseTag(QFile &musicFile,
QDataStream &musicDataStream,
KNMusicAnalysisItem &analysisItem)
{
Q_UNUSED(musicFile)
//Some comments is from:
// http://atomicparsley.sourceforge.net/mpeg-4files.html
//The m4a file is made of a number of atoms, now they are called 'boxes'.
// A box always begins with 4 bytes length and follows 4 bytes name.
//And first we need to check the header box of the file. Its name is 'ftyp'
//Check out the data.
M4ABox ftypBox;
if(!getBox(musicDataStream, ftypBox, true) ||
ftypBox.name!="ftyp")
{
//This cannot be a m4a file.
return false;
}
//Metadata to be used with iTunes comes in the ilst box inside the moov box.
//The structure of the ilst is:
/* moov <-
* |-udta
* | |-meta
* | | |-ilst
*/
//We have to keep reading until we find out the moov box.
M4ABox moovBox;
while(moovBox.name!="moov")
{
//If we cannot find a box, means there's no "moov" box, return false.
if(!getBox(musicDataStream, moovBox))
{
return true;
}
}
//When we comes to here, we should find the "moov" box, expand the box to
//find out the "udta" box.
/* moov
* |-udta <-
* | |-meta
* | | |-ilst
*/
QList<M4ABox> expandList;
extractBox(moovBox, expandList);
//Check the expand list.
if(expandList.isEmpty())
{
return true;
}
//Generate a empty box for "udta" box.
M4ABox udtaBox;
//Find all the box of the expand list of the "moov" box.
for(auto i : expandList)
{
//Check the name of each box.
if(i.name=="udta")
{
//Save the udta box.
udtaBox=i;
//Make the udta box to independent box.
independent(udtaBox);
//Clear the moov box.
clearBox(moovBox);
break;
}
}
//Check out the data.
if(udtaBox.name.isEmpty())
{
//If the name of the udta box is still empty, means there's no udta box
//in the moov box, then we are faild to parse.
return true;
}
//Expand the "udta" box, and find "meta" box.
/* moov
* |-udta
* | |-meta <-
* | | |-ilst
*/
expandList.clear();
extractBox(udtaBox, expandList);
//Check the expand list.
if(expandList.isEmpty())
{
return true;
}
//Generate a empty box for "meta" box.
M4ABox metaBox;
//Find all the box of the expand list of the "meta" box.
for(auto i : expandList)
{
//Check the name of each box.
if(i.name=="meta")
{
//Save the udta box.
metaBox=i;
//Make the meta box to independent box.
independent(metaBox);
//Clear the udta box.
clearBox(udtaBox);
break;
}
}
//Check out the box.
if(metaBox.name.isEmpty())
{
//If the name of the meta box is still empty, means we cannot find meta
//box in the meta box, then we are finished to parse.
return true;
}
//Okay, now we can parse the meta box.
/* moov
* |-udta
* | |-meta
* | | |-ilst <-
*/
//Generate a box for ilst.
M4ABox ilstBox;
//Extract the meta box.
if(!findIlstBox(metaBox, ilstBox))
{
//Finished to parse the tag if we cannot file the ilst box.
return true;
}
//Clear the meta box to recover the memory.
clearBox(metaBox);
//Okay we are now find out the ilst box. Extract the ilst box and we can now
//fill our data to the detail info.
expandList.clear();
extractBox(ilstBox, expandList);
//Check out the expand list.
if(expandList.isEmpty())
{
//If there's no data inside the expand list, then our mission is
//finished.
return true;
}
//Write the expand list to the detail info.
//Get the detail info.
KNMusicDetailInfo &detailInfo=analysisItem.detailInfo;
//Check all box inside the list.
for(auto i : expandList)
{
//Check the name of the box.
//If it's "covr", means we find out the album art box.
if(i.name=="covr")
{
analysisItem.imageData["M4A"].append(QByteArray(i.data, i.size));
//Continue to next box.
continue;
}
//Check the index of the box inside the map.
int atomIndex=m_atomIndexMap.value(i.name, -1);
//If the atom index is -1, then we have to continue to the next box.
if(atomIndex==-1)
{
continue;
}
//Check the data size.
if(i.size<16)
{
continue;
}
//Get the data position.
//Actually there's another box inside the box of the i.
//We can just skip it to read the data.
char *dataPosition=i.data+16;
int dataSize=i.size-16;
//Output box data to detail info.
switch(atomIndex)
{
case TrackNumber:
//Ensure the data is enough to set the track number and track count.
if(dataSize>6)
{
//Pick up the third byte data of the position as the track
//number.
detailInfo.textLists[TrackNumber]=
QString::number(dataPosition[3]);
//Pick up the fifth byte data of the position as the track
//count.
detailInfo.textLists[TrackCount]=
QString::number(dataPosition[5]);
}
break;
case DiscNumber:
//Ensure the data is enough to set the disc number and disc count.
if(dataSize>6)
{
//Pick up the third byte data of the position as the disc
//number.
detailInfo.textLists[DiscNumber]=
QString::number(dataPosition[3]);
//Pick up the fifth byte data of the position as the disc
//count.
detailInfo.textLists[DiscCount]=
QString::number(dataPosition[5]);
}
break;
case Rating:
if(dataSize>0)
{
//Turn the first byte into the rating data.
detailInfo.textLists[Rating]=
QString::number((quint8)dataPosition[0]);
}
break;
default:
//Check out the data size first.
if(dataSize>0)
{
//Set the whole data as the text data.
setTextData(detailInfo.textLists[atomIndex],
QByteArray(dataPosition, dataSize));
}
break;
}
}
return true;
}
bool KNMusicTagM4a::writeTag(const KNMusicAnalysisItem &analysisItem)
{
//Get the detail info.
const KNMusicDetailInfo &detailInfo=analysisItem.detailInfo;
//Prepare and get the music file.
QFile musicFile(detailInfo.filePath);
//Open the file as read only mode.
if(!musicFile.open(QIODevice::ReadOnly))
{
//Failed to open the source.
return false;
}
//Generate a temporary file, write the new data to the temporary file.
QTemporaryFile updatedTagFile;
//Open the temporary file, if we cannot open the temporary file it will be
//failed to write the tag.
if(!updatedTagFile.open())
{
//Close the opened music file.
musicFile.close();
return false;
}
//Generate a data stream for music file.
QDataStream musicDataStream(&musicFile);
//Read and copy the fytp box. If the first box isn't fytp box, then ignore
//the file.
M4ABox ftypBox;
if(!getBox(musicDataStream, ftypBox) || ftypBox.name!="ftyp")
{
//Close both file.
musicFile.close();
updatedTagFile.close();
//Failed to find a m4a file, return false.
return false;
}
//Write ftyp data to the temporary file.
writeBox(ftypBox, updatedTagFile);
//We have to keep reading until we find out the moov box.
//Output all the other data to updated tag file.
M4ABox moovBox;
for(;;)
{
//If we can get a new box.
if(getBox(musicDataStream, moovBox))
{
//Check out the name.
if(moovBox.name=="moov")
{
break;
}
else
{
//Copy the data.
writeBox(moovBox, updatedTagFile);
}
}
else
{
//If we cannot find a box, means there's no "moov" box, failed to
//write data.
//Close both file.
musicFile.close();
updatedTagFile.close();
//Failed to find a m4a file, return false.
return false;
}
}
//When we comes to here, we should find the "moov" box, expand the box to
//find out the "udta" box.
QList<M4ABox> moovExpandList;
extractBox(moovBox, moovExpandList);
//Generate a empty box for "udta" box.
M4ABox udtaBox;
//Check the expand list.
if(moovExpandList.isEmpty() ||
!findBox("udta", udtaBox, moovExpandList))
{
//If the name of the udta box is still empty, means there's no udta box
//in the moov box, then we are faild to parse.
//Close both file.
musicFile.close();
updatedTagFile.close();
//Failed to find a m4a file, return false.
return false;
}
//Expand the "udta" box, and find "meta" box.
QList<M4ABox> udtaExpandList;
extractBox(udtaBox, udtaExpandList);
//Generate a empty box for "meta" box.
M4ABox metaBox;
//Check the expand list and find box.
if(udtaExpandList.isEmpty() ||
!findBox("meta", metaBox, udtaExpandList))
{
//If the name of the meta box is still empty, means we cannot find meta
//box in the meta box, then we are finished to parse.
//Close both file.
musicFile.close();
updatedTagFile.close();
//Failed to find a m4a file, return false.
return false;
}
//Okay, now we can parse the meta box.
//Generate a box for ilst.
M4ABox ilstBox;
QList<M4ABox> metaExpandList;
//Extract the meta box.
extractMetaBox(metaBox, metaExpandList);
//Find all box of the expand list.
if(metaExpandList.isEmpty() ||
!findBox("ilst", ilstBox, metaExpandList))
{
//We cannot find ilst box in the meta box.
//Close both file.
musicFile.close();
updatedTagFile.close();
//Failed to find a m4a file, return false.
return false;
}
//Prepare the ilst expand list.
QList<M4ABox> ilstExpandList;
//Expand the ilst box.
extractBox(ilstBox, ilstExpandList);
//Now we have to write data to ilst expand list.
for(int i=0; i<MusicDataCount; ++i)
{
//Get the atom name of current data.
QString atomName=m_indexAtomMap.value(i, QString());
//Check if the atom name is empty, then go to the next.
if(atomName.isEmpty())
{
continue;
}
//Remove the exist data inside the ilst expand list.
for(int j=ilstExpandList.size()-1; j>-1; --j)
{
//Check the name of the item.
if(ilstExpandList.at(j).name==atomName)
{
//Remove it.
ilstExpandList.removeAt(j);
}
}
//Generate the raw data.
QByteArray rawData;
//Write the data to raw data.
switch(i)
{
case TrackNumber:
//Append three 0x00 first.
rawData.append((char)0x00);
rawData.append((char)0x00);
rawData.append((char)0x00);
//Append the track index.
rawData.append((char)detailInfo.textLists[TrackNumber].toString()
.toInt());
//Append splitter 0x00.
rawData.append((char)0x00);
//Append the track count.
rawData.append((char)detailInfo.textLists[TrackCount].toString()
.toInt());
//Append two 0x00 after.
rawData.append((char)0x00);
rawData.append((char)0x00);
break;
case DiscNumber:
//Append three 0x00 first.
rawData.append((char)0x00);
rawData.append((char)0x00);
rawData.append((char)0x00);
//Append the disc index.
rawData.append((char)detailInfo.textLists[DiscNumber].toString()
.toInt());
//Append splitter 0x00.
rawData.append((char)0x00);
//Append the disc count.
rawData.append((char)detailInfo.textLists[DiscCount].toString()
.toInt());
//Append two 0x00 after.
rawData.append((char)0x00);
rawData.append((char)0x00);
break;
case Rating:
//Append the rating to bytes.
rawData.append((char)detailInfo.textLists[Rating].toString()
.toInt());
break;
default:
//Translate the text data to UTF-8, without BOM.
rawData=detailInfo.textLists[i].toString().toUtf8();
}
//Generate the box.
ilstExpandList.append(generateItemBox(i, atomName, rawData));
}
//Remove all the album art atom.
for(int j=ilstExpandList.size()-1; j>-1; --j)
{
//Check the name of the item.
if(ilstExpandList.at(j).name=="covr")
{
//Remove it.
ilstExpandList.removeAt(j);
}
}
//Check album art.
if(!analysisItem.coverImage.isNull())
{
//Generate the raw data for the image.
//Add the png raw data to image data.
QByteArray imageData;
QBuffer imageBuffer(&imageData);
//Open the image buffer.
imageBuffer.open(QIODevice::WriteOnly);
//Save the data to image data.
analysisItem.coverImage.save(&imageBuffer, "PNG");
//Close the image buffer.
imageBuffer.close();
//Check the image data, if the data is not empty, then insert data.
if(imageData.isEmpty())
{
//Generate the flag data.
char covrFlag[5];
covrFlag[0]=0x00;
covrFlag[1]=0x00;
covrFlag[2]=0x00;
covrFlag[3]=14;
//Generate item box, insert to list.
ilstExpandList.append(generateItemBox(covrFlag, "covr", imageData));
}
}
//Combine the ilst data together.
M4ABox updatedIlstBox=zipBox("ilst", ilstExpandList);
//Clear the list and original ilst box.
ilstExpandList.clear();
clearBox(ilstBox);
//Replace the original ilst box.
for(int i=metaExpandList.size()-1; i>-1; --i)
{
//Check the name.
if(metaExpandList.at(i).name=="ilst")
{
//Replace the item.
metaExpandList.replace(i, updatedIlstBox);
//Stop searching.
break;
}
}
//Combine the meta expand list data.
QByteArray metaRawData=combineBoxList(metaExpandList);
//Clear up the meta expand list.
metaExpandList.clear();
//Append the first four bytes raw data to the meta box raw data.
metaRawData.prepend(metaBox.data, 4);
//Clear up the no use meta box.
clearBox(metaBox);
clearBox(updatedIlstBox);
//Set the data to new meta box.
metaBox.name="meta";
metaBox.independence=true;
metaBox.size=metaRawData.size();
metaBox.data=new char[metaBox.size];
memcpy(metaBox.data, metaRawData.data(), metaBox.size);
//Replace the original meta box.
for(int i=udtaExpandList.size()-1; i>-1; --i)
{
//Check the name.
if(udtaExpandList.at(i).name=="meta")
{
//Replace the item.
udtaExpandList.replace(i, metaBox);
//Stop Searching.
break;
}
}
//Combine the udta data together.
M4ABox updatedUdtaBox=zipBox("udta", udtaExpandList);
//Clear the list and original udta box.
udtaExpandList.clear();
clearBox(udtaBox);
//Replace the original udta box.
for(int i=moovExpandList.size()-1; i>-1; --i)
{
//Check the name.
if(moovExpandList.at(i).name=="udta")
{
//Replace the item
moovExpandList.replace(i, updatedUdtaBox);
//Stop searching.
break;
}
}
//Combine the moov data together.
M4ABox updatedMoovBox=zipBox("moov", moovExpandList);
//Clear the list and original moov box.
moovExpandList.clear();
clearBox(moovBox);
//Write the new moov box to the updated tag file.
writeBox(updatedMoovBox, updatedTagFile);
//Clear up the updated moov box.
clearBox(updatedMoovBox);
//Copy the left data to the updated tag file.
//Generate the music data cache.
char *turboCache=new char[DataCacheSize];
//Copy the music data from the original music file, copy the
//MusicDataCacheSize bytes once, until there's no bytes to copy.
int bytesRead=musicFile.read(turboCache, DataCacheSize);
while(bytesRead>0)
{
//Write the cache to temporary file.
updatedTagFile.write(turboCache, bytesRead);
//Read new data from the original file to cache.
bytesRead=musicFile.read(turboCache, DataCacheSize);
}
//Close the music file.
musicFile.close();
//Reset the temporary file.
updatedTagFile.reset();
//Reopen the music file as write only mode, write all the udpated tag file
//data to the music file.
if(!musicFile.open(QIODevice::WriteOnly))
{
//Close the updated tag file.
updatedTagFile.close();
//Failed to write data.
return false;
}
//Copy data from temporary file to music file.
bytesRead=updatedTagFile.read(turboCache, DataCacheSize);
while(bytesRead>0)
{
//Write the cache to music file.
musicFile.write(turboCache, bytesRead);
//Read new data from cache to the original file.
bytesRead=updatedTagFile.read(turboCache, DataCacheSize);
}
//Close the music file and temporary file.
musicFile.close();
updatedTagFile.close();
//Clear up the turbo memory.
delete[] turboCache;
//The tag rewrite is finished.
return true;
}
