I have two mac apps that communicate with each other using QLocalSocket. Able to send the received QString but not able to send the received QImage Below is my code.
SERVER SIDE CODE
QImage image(":/asset/logo_active.png");
QByteArray ba;
qDebug() << image.sizeInBytes() <<image.size();
ba.append((char *)image.bits(),image.sizeInBytes());
qDebug() <<ba.size(); //262144
this->mSocket->write(ba);
if(!this->mSocket->waitForBytesWritten(-1))
{
qDebug() << "writen Bytes error " << this->mSocket->errorString();
}
this->mSocket->flush();
CLIENT SIDE CODE
connect(mLocalSocket,&QLocalSocket::readyRead, [&]() {
QByteArray ba;
ba = mLocalSocket->readAll();
qDebug() << "size is" << ba.size(); // size is 0
QImage image((uchar *)ba.data(),1024,768,QImage::Format_RGB32);
ui->labelStream->setPixmap(QPixmap::fromImage(img));
});
at sender 262144 is the byte-array size but at the receiver, byte-array size is 0
Do let me know if I am missing anything.
Thanks In Advance
CodePudding user response:
Finally I got the solutions I used QDataStream below is the code example.
SERVER SIDE CODE:
QDataStream T(mSocket);
T.setVersion(QDataStream::Qt_5_7);
QByteArray ba;
ba.append((char *)img.bits(),img.sizeInBytes());
T << ba;
mSocket->flush();
CLIENT SIDE CODE
QByteArray jsonData;
QDataStream socketStream(mLocalSocket);
socketStream.setVersion(QDataStream::Qt_5_7);
for (;;) {
socketStream.startTransaction();
socketStream >> jsonData;
if (socketStream.commitTransaction()) {
QImage image((uchar *)jsonData.data(),640,480,QImage::Format_RGB888);
ui->labelStream->setPixmap(QPixmap::fromImage(image));
}else {
// the read failed, the socket goes automatically back to the state it was in before the transaction started
// we just exit the loop and wait for more data to become available
break;
}
}
Thanks, Everyone for your support also Stackoverflow.