-
Bug
-
Resolution: Unresolved
-
P2: Important
-
None
-
6.5.3
-
None
-
macos sonoma
-
macOS
Hi,
I have an application that needs to save a QImage with a size of 6000 pixels by 4000 pixels into a JPEG file.
Sometimes this image is not properly saved, when I try to read it I get the following message :
qt.gui.imageio.jpeg: Corrupt JPEG data: premature end of data segment
It does not happen all the time.
I make a simple program to show the issue. When running this example, we can see that the issue happens randomly
The main file:
#include <QApplication>
#include <QImage>
#include <QtDebug>
#include <exception>
void RunTest()
{
QString outputFileName = "./output.jpeg";
int const width = 6000;
int const height = 4000;
{
QImage image( width, height, QImage::Format_RGB32 );
image.fill( qRgb( 0, 0, 0 ) );
image.save( outputFileName );
}
qDebug() << "Reading file " << outputFileName;
QImage check( outputFileName );
if( check.isNull() )
{
throw std::exception();
}
}
void
RunTests( int inNumTests )
{
for( int i = 0; i < inNumTests; ++i )
{
RunTest();
}
}
int main( int argc, char * argv[] )
{
QApplication app( argc, argv );
RunTests( 10 );
return 0;
}
The CmakeLists.txt file
cmake_minimum_required( VERSION 3.10 )
project( BugJPEGWithQt653 )
set( CMAKE_PREFIX_PATH "/usr/local/Qt-6.5.3" )
set( CMAKE_CXX_STANDARD 17 )
set( CMAKE_CXX_STANDARD_REQUIRED ON )
find_package( Qt6 COMPONENTS Core Gui Widgets REQUIRED )
add_executable( BugJPEGWithQt653 main.cpp )
target_link_libraries( BugJPEGWithQt653 Qt6::Core Qt6::Widgets Qt6::Gui )