Basic support for cr2 raw files

imageringlist.cpp

@@ -1,6 +1,8 @@
 #include "imageringlist.h"
 #include <QThreadPool>
 #include <QDir>
+#include <libraw/libraw.h>
+#include <QDebug>
 
 using namespace std;
 
@@ -18,8 +20,31 @@ public:
     }
     void run()
     {
-        QImage img(m_file);
-        QMetaObject::invokeMethod(m_receiver, "imageLoaded", Qt::QueuedConnection, Q_ARG(QImage, img));
+        if(m_file.endsWith(".CR2", Qt::CaseInsensitive))
+        {
+            LibRaw raw;
+            raw.open_file(m_file.toLocal8Bit().data());
+            raw.imgdata.params.half_size = true;
+            raw.imgdata.params.use_camera_wb = true;
+            raw.imgdata.params.user_flip = 0;
+            raw.unpack();
+            raw.dcraw_process();
+            libraw_processed_image_t *rawImg = raw.dcraw_make_mem_image();
+            QImage img(rawImg->width, rawImg->height, QImage::Format_RGB888);
+            qDebug() << rawImg->width << img.width()*3 << img.scanLine(1)-img.scanLine(0);
+            uint scanLine = rawImg->width*rawImg->colors;
+            for(uint i=0; i<rawImg->height; i++)
+            {
+                memcpy(img.scanLine(i), rawImg->data+(i*scanLine), scanLine);
+            }
+            raw.dcraw_clear_mem(rawImg);
+            QMetaObject::invokeMethod(m_receiver, "imageLoaded", Qt::QueuedConnection, Q_ARG(QImage, img));
+        }
+        else
+        {
+            QImage img(m_file);
+            QMetaObject::invokeMethod(m_receiver, "imageLoaded", Qt::QueuedConnection, Q_ARG(QImage, img));
+        }
     }
 };
 
@@ -80,7 +105,7 @@ bool ImageRingList::setDir(const QString path, const QString &currentFile)
     if(dir.exists())
     {
         QStringList nameFilter;
-        nameFilter << "*.jpg" << "*.png";
+        nameFilter << "*.jpg" << "*.png" << "*.cr2";
 
         QStringList list = dir.entryList(nameFilter, QDir::Files | QDir::Readable, QDir::Name);
         QStringList absolutePaths;