bool ImageSegmenter::_generateJpeg( const ImageWrapper& image,
const Handler& handler ) const
{
#ifdef DEFLECT_USE_LIBJPEGTURBO
const SegmentParametersList& params = _generateSegmentParameters( image );
// The resulting Jpeg segments
bool result = true;
std::vector<SegmentCompressionWrapper> tasks;
for( SegmentParametersList::const_iterator it = params.begin();
it != params.end(); ++it )
{
SegmentCompressionWrapper task( image, handler, result );
task.segment.parameters = *it;
tasks.push_back( task );
}
// create JPEGs for each segment, in parallel
QtConcurrent::blockingMap( tasks, &computeJpeg );
return result;
#else
static bool first = true;
if( first )
{
first = false;
std::cout << "LibJpegTurbo not available, not using compression"
<< std::endl;
}
return generateRaw( image, handler );
#endif
}
bool ImageSegmenter::generate( const ImageWrapper& image,
const Handler& handler ) const
{
if (image.compressionPolicy == COMPRESSION_ON)
return generateJpeg( image, handler );
return generateRaw( image, handler );
}
