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Check available memory and correct scale factor on windows

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Gres 2014-04-11 22:52:03 +04:00
parent fbabb671e8
commit 87ff87d9ae
1 changed files with 24 additions and 0 deletions
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24
ImageProcessing.cpp
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@ -1,9 +1,25 @@
#include <QDebug>
#include <leptonica/allheaders.h>
#include <tesseract/host.h>
#include "ImageProcessing.h"
#ifdef WIN32
#include <windows.h>
qint64 getFreeMemory ()
{
MEMORYSTATUSEX statex;
statex.dwLength = sizeof (statex);
if (GlobalMemoryStatusEx (&statex))
{
return statex.ullAvailPhys;
}
return -1;
}
#endif
Pix *convertImage(const QImage& image)
{
PIX *pix;
@ -111,6 +127,14 @@ Pix *prepareImage(const QImage &image, int preferredScale)
float maxScaleY = MAX_INT16 / double (gray->h);
float scaleY = std::min (float (preferredScale), maxScaleY);
float scale = std::min (scaleX, scaleY);
#ifdef WIN32
qint64 availableMemory = getFreeMemory () * 0.95;
qint32 actualSize = gray->w * gray->h * gray->d / 8;
float maxScaleMemory = float (availableMemory) / actualSize;
scale = std::min (scale, maxScaleMemory);
#endif
scaled = pixScale (gray, scale, scale);
}
Q_ASSERT (scaled != NULL);