First version OpenGL drawing

image.frag

@@ -0,0 +1,13 @@
+#version 130
+
+uniform sampler2D qt_Texture0;
+varying vec2 qt_TexCoord0;
+uniform vec2 scale;
+
+void main(void)
+{
+    float c = texture2D(qt_Texture0, qt_TexCoord0).r;
+    c = c*scale.x + scale.y;
+    float color = pow(c, 0.4545);
+    gl_FragColor = vec4(color, color, color, 1.0);
+}

image.vert

@@ -0,0 +1,11 @@
+#version 130
+
+attribute vec2 qt_Vertex;
+attribute vec2 qt_MultiTexCoord0;
+varying vec2 qt_TexCoord0;
+
+void main(void)
+{
+    gl_Position = vec4(qt_Vertex, 0.0, 1.0);
+    qt_TexCoord0 = qt_MultiTexCoord0;
+}

imageringlist.cpp

@@ -2,6 +2,7 @@
 #include <QThreadPool>
 #include <QDir>
 #include "loadrunable.h"
+#include "rawimage.h"
 
 using namespace std;
 
@@ -31,6 +32,7 @@ void Image::load()
 void Image::release()
 {
     m_pixmap = QPixmap();
+    m_rawImage.reset();
     m_released = true;
     m_loading = false;
 }
@@ -45,6 +47,11 @@ QPixmap Image::pixmap() const
     return m_pixmap;
 }
 
+RawImageAbs *Image::rawImage()
+{
+    return m_rawImage.get();
+}
+
 ImageInfoData Image::info() const
 {
     return m_info;
@@ -55,15 +62,20 @@ bool Image::isCurrent() const
     return !m_released;
 }
 
-void Image::imageLoaded(QImage img, ImageInfoData info)
+void Image::imageLoaded(QImage img, void *rawImage, ImageInfoData info)
 {
     m_loading = false;
     if(!m_released)
     {
         m_pixmap = QPixmap::fromImage(img);
+        m_rawImage.reset(static_cast<RawImageAbs*>(rawImage));
         m_info = info;
         emit pixmapLoaded(this);
     }
+    else
+    {
+        delete rawImage;
+    }
 }
 
 ImageRingList::ImageRingList(QObject *parent) : QObject(parent)
@@ -223,7 +235,7 @@ void ImageRingList::imageLoaded(Image *image)
 {
     if(image->name() == (*m_currImage)->name())
     {
-        emit pixmapLoaded(image->pixmap());
+        emit pixmapLoaded(image);
         emit infoLoaded(image->info());
     }
 }

imageringlist.h

@@ -7,6 +7,7 @@
 #include <QPixmap>
 #include <memory>
 #include "imageinfo.h"
+#include "rawimage.h"
 
 class ImageRingList;
 
@@ -17,6 +18,7 @@ class Image : public QObject
     bool m_released;
     bool m_current;
     QPixmap m_pixmap;
+    std::unique_ptr<RawImageAbs> m_rawImage;
     QString m_name;
     ImageInfoData m_info;
     ImageRingList *m_ringList;
@@ -26,12 +28,13 @@ public:
     void release();
     QString name() const;
     QPixmap pixmap() const;
+    RawImageAbs* rawImage();
     ImageInfoData info() const;
     bool isCurrent() const;
 signals:
     void pixmapLoaded(Image *ptr);
 protected slots:
-    void imageLoaded(QImage img, ImageInfoData info);
+    void imageLoaded(QImage img, void *rawImage, ImageInfoData info);
 };
 
 typedef std::shared_ptr<Image> ImagePtr;
@@ -65,7 +68,7 @@ protected:
     QList<ImagePtr>::iterator increment(QList<ImagePtr>::iterator iter);
     QList<ImagePtr>::iterator decrement(QList<ImagePtr>::iterator iter);
 signals:
-    void pixmapLoaded(QPixmap pix);
+    void pixmapLoaded(Image *image);
     void infoLoaded(ImageInfoData info);
     void currentImageChanged();
 protected slots:

imagescrollareagl.cpp

@@ -0,0 +1,130 @@
+#include "imagescrollareagl.h"
+#include <QOpenGLFunctions>
+#include <QDebug>
+#include <QKeyEvent>
+#include <QOpenGLDebugLogger>
+
+ImageScrollAreaGL::ImageScrollAreaGL(QWidget *parent) : QOpenGLWidget(parent)
+{
+    setFocusPolicy(Qt::ClickFocus);
+    m_range = UINT16_MAX;
+    m_low = 0;
+    m_high = 1;
+}
+
+ImageScrollAreaGL::~ImageScrollAreaGL()
+{
+    makeCurrent();
+}
+
+void ImageScrollAreaGL::setImage(RawImageAbs *image)
+{
+    m_image->destroy();
+    m_image->setFormat(QOpenGLTexture::R16_UNorm);
+    m_image->setSize(image->width(), image->height());
+    m_image->setMinMagFilters(QOpenGLTexture::LinearMipMapLinear, QOpenGLTexture::Linear);
+    m_image->allocateStorage();
+    if(RawImage<uint8_t> *i8 = dynamic_cast<RawImage<uint8_t>*>(image))
+    {
+        m_image->setData(QOpenGLTexture::Red, QOpenGLTexture::UInt8, i8->data());
+        m_range = UINT8_MAX;
+    }
+    else if(RawImage<uint16_t> *i16 = dynamic_cast<RawImage<uint16_t>*>(image))
+    {
+        m_image->setData(QOpenGLTexture::Red, QOpenGLTexture::UInt16, i16->data());
+        m_range = UINT16_MAX;
+    }
+    else if(RawImage<uint32_t> *i32 = dynamic_cast<RawImage<uint32_t>*>(image))
+    {
+        m_image->setData(QOpenGLTexture::Red, QOpenGLTexture::UInt32, i32->data());
+        m_range = UINT32_MAX;
+    }
+    m_image->generateMipMaps();
+    repaint();
+}
+
+void ImageScrollAreaGL::setLow(int low)
+{
+    m_low = low/m_range;
+    repaint();
+}
+
+void ImageScrollAreaGL::setHigh(int high)
+{
+    m_high = high/m_range;
+    repaint();
+}
+
+void ImageScrollAreaGL::paintGL()
+{
+    float s = 1.0f/(m_high-m_low);
+    m_program->bind();
+    m_program->setUniformValue("scale", s, -m_low*s);
+
+    m_image->bind(0);
+    f->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+}
+
+void ImageScrollAreaGL::resizeGL(int w, int h)
+{
+    m_width = w;
+    m_height = h;
+    f->glViewport(0, 0, w, h);
+}
+
+void ImageScrollAreaGL::initializeGL()
+{
+    f = context()->functions();
+    f->glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
+
+    m_vao = std::unique_ptr<QOpenGLVertexArrayObject>(new QOpenGLVertexArrayObject);
+    m_vao->create();
+    m_vao->bind();
+
+    QOpenGLDebugLogger *logger = new QOpenGLDebugLogger(this);
+    logger->initialize();
+    logger->startLogging();
+    connect(logger, &QOpenGLDebugLogger::messageLogged, [](const QOpenGLDebugMessage &message)
+        {
+            qDebug() << message;
+        });
+
+    qDebug() << (char*)f->glGetString(GL_VENDOR);
+    qDebug() << (char*)f->glGetString(GL_RENDERER);
+    qDebug() << (char*)f->glGetString(GL_VERSION);
+
+    qDebug() << context()->format();
+
+    // each vertex is  x,y 2D position and s,t texture coordinates
+    float vertexs[] = {-1.0f, -1.0f, 0.0f, 1.0f,
+                        1.0f, -1.0f, 1.0f, 1.0f,
+                       -1.0f,  1.0f, 0.0f, 0.0f,
+                        1.0f,  1.0f, 1.0f, 0.0f,};
+    m_buffer = std::unique_ptr<QOpenGLBuffer>(new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer));
+    m_buffer->setUsagePattern(QOpenGLBuffer::StaticDraw);
+    m_buffer->create();
+    m_buffer->bind();
+    m_buffer->allocate(vertexs, sizeof(vertexs));
+    f->glVertexAttribPointer(0, 2, GL_FLOAT, false, sizeof(float)*4, 0);
+
+    m_program = std::unique_ptr<QOpenGLShaderProgram>(new QOpenGLShaderProgram);
+    m_program->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/shaders/image.vert");
+    m_program->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/shaders/image.frag");
+    if(!m_program->link())
+    {
+        qDebug() << "Link failed" << m_program->log();
+    }
+
+    m_program->bind();
+    m_program->enableAttributeArray("qt_Vertex");
+    m_program->setAttributeBuffer("qt_Vertex", GL_FLOAT, 0, 2, sizeof(float)*4);
+    m_program->enableAttributeArray("qt_MultiTexCoord0");
+    m_program->setAttributeBuffer("qt_MultiTexCoord0", GL_FLOAT, sizeof(float)*2, 2, sizeof(float)*4);
+    m_program->setUniformValue("qt_Texture0", (GLuint)0);
+    m_program->setUniformValue("scale", 1.0f, 0.0f);
+
+    m_image = std::unique_ptr<QOpenGLTexture>(new QOpenGLTexture(QImage("/home/nou/Obrázky/1p6yap.jpg")));
+    m_image->bind(0);
+    m_image->setMinificationFilter(QOpenGLTexture::LinearMipMapLinear);
+    m_image->setMagnificationFilter(QOpenGLTexture::Linear);
+}

imagescrollareagl.h

@@ -0,0 +1,48 @@
+#ifndef IMAGESCROLLAREAGL_H
+#define IMAGESCROLLAREAGL_H
+
+#include <memory>
+#include <QObject>
+#include <QOpenGLWidget>
+#include <QOpenGLFunctions>
+#include <QOpenGLShaderProgram>
+#include <QOpenGLBuffer>
+#include <QOpenGLTexture>
+#include <QOpenGLVertexArrayObject>
+#include "rawimage.h"
+
+typedef enum
+{
+    Linear,
+    Log,
+    Sqrt,
+    Power,
+    Asinh,
+}StretchFunc;
+
+class ImageScrollAreaGL : public QOpenGLWidget
+{
+    Q_OBJECT
+    QOpenGLFunctions *f;
+    std::unique_ptr<QOpenGLShaderProgram> m_program;
+    std::unique_ptr<QOpenGLBuffer> m_buffer;
+    std::unique_ptr<QOpenGLTexture> m_image;
+    std::unique_ptr<QOpenGLVertexArrayObject> m_vao;
+    int m_width, m_height;
+    float m_low;
+    float m_high;
+    float m_range;
+public:
+    explicit ImageScrollAreaGL(QWidget *parent = nullptr);
+    ~ImageScrollAreaGL();
+    void setImage(RawImageAbs *image);
+public slots:
+    void setLow(int low);
+    void setHigh(int high);
+protected:
+    void paintGL();
+    void resizeGL(int w, int h);
+    void initializeGL();
+};
+
+#endif // IMAGESCROLLAREAGL_H

loadrunable.cpp

@@ -264,13 +264,13 @@ void LoadRunable::run()
     if(m_file.endsWith(".CR2", Qt::CaseInsensitive))
     {
         timer.start();
-        loadRAW(m_file, info, m_analyzeLevel != None ? &rawImage : nullptr, &img);
+        loadRAW(m_file, info, &rawImage, &img);
         raw = true;
         qDebug() << "LoadRaw" << timer.elapsed();
     }
     else if(m_file.endsWith(".FIT", Qt::CaseInsensitive) || m_file.endsWith(".FITS", Qt::CaseInsensitive))
     {
-        loadFITS(m_file, info, m_analyzeLevel != None ? &rawImage : nullptr, &img);
+        loadFITS(m_file, info, &rawImage, &img);
     }
     else
     {
@@ -350,7 +350,5 @@ void LoadRunable::run()
         }
     }
 
-    if(rawImage)delete rawImage;
-
-    QMetaObject::invokeMethod(m_receiver, "imageLoaded", Qt::QueuedConnection, Q_ARG(QImage, img), Q_ARG(ImageInfoData, info));
+    QMetaObject::invokeMethod(m_receiver, "imageLoaded", Qt::QueuedConnection, Q_ARG(QImage, img), Q_ARG(void*, rawImage), Q_ARG(ImageInfoData, info));
 }

main.cpp

@@ -1,8 +1,15 @@
 #include "mainwindow.h"
 #include <QApplication>
+#include <QSurfaceFormat>
 
 int main(int argc, char *argv[])
 {
+    QSurfaceFormat format;
+    format.setMajorVersion(3);
+    format.setMinorVersion(0);
+    format.setOption(QSurfaceFormat::DebugContext);
+    QSurfaceFormat::setDefaultFormat(format);
+
     QApplication a(argc, argv);
     a.setOrganizationName("nou");
     a.setApplicationName("Tenmon");

mainwindow.cpp

@@ -1,4 +1,5 @@
 #include "mainwindow.h"
+#include "stretchpanel.h"
 #include <QScrollArea>
 #include <QDir>
 #include <QKeyEvent>
@@ -26,6 +27,7 @@ int MainWindow::socketPair[2] = {0, 0};
 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
 {
     qRegisterMetaType<ImageInfoData>("ImageInfoData");
+    qRegisterMetaType<RawImageAbs*>("RawImageAbs");
 
     m_info = new ImageInfo(this);
     QDockWidget *infoDock = new QDockWidget(tr("Image info"), this);
@@ -33,7 +35,8 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     infoDock->setObjectName("infoDock");
     addDockWidget(Qt::LeftDockWidgetArea, infoDock);
     m_image = new ImageScrollArea(this);
-    setCentralWidget(m_image);
+    m_image->resize(0,0);
+    //setCentralWidget(m_image);
     resize(800, 600);
 
     PhotoCapture *photoCapture = new PhotoCapture(this);
@@ -42,10 +45,13 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     captureDock->setObjectName("captureDock");
     addDockWidget(Qt::BottomDockWidgetArea, captureDock);
 
+    m_imageGL = new ImageScrollAreaGL(this);
+    setCentralWidget(m_imageGL);
+
     setWindowTitle(tr("Tenmon"));
 
     m_ringList = new ImageRingList(this);
-    connect(m_ringList, SIGNAL(pixmapLoaded(QPixmap)), this, SLOT(pixmapLoaded(QPixmap)));
+    connect(m_ringList, SIGNAL(pixmapLoaded(Image*)), this, SLOT(pixmapLoaded(Image*)));
     connect(m_ringList, SIGNAL(currentImageChanged()), this, SLOT(updateWindowTitle()));
     connect(m_ringList, SIGNAL(infoLoaded(ImageInfoData)), m_info, SLOT(setInfo(ImageInfoData)));
 
@@ -106,6 +112,14 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     dockMenu->addAction(captureDock->toggleViewAction());
     menuBar()->addMenu(dockMenu);
 
+    StretchPanel *stretchPanel = new  StretchPanel(this);
+    connect(stretchPanel, SIGNAL(lowChanged(int)), m_imageGL, SLOT(setLow(int)));
+    connect(stretchPanel, SIGNAL(highChanged(int)), m_imageGL, SLOT(setHigh(int)));
+
+    QDockWidget *stretchDock = new QDockWidget(tr("Stretch"), this);
+    stretchDock->setWidget(stretchPanel);
+    addDockWidget(Qt::LeftDockWidgetArea, stretchDock);
+
     setupSigterm();
     QSettings settings;
     restoreGeometry(settings.value("mainwindow/geometry").toByteArray());
@@ -187,9 +201,10 @@ void MainWindow::socketNotify()
     socketNotifier->setEnabled(true);
 }
 
-void MainWindow::pixmapLoaded(QPixmap pix)
+void MainWindow::pixmapLoaded(Image *image)
 {
-    m_image->setImage(pix);
+    m_image->setImage(image->pixmap());
+    m_imageGL->setImage(image->rawImage());
 }
 
 void MainWindow::openFile()

mainwindow.h

@@ -7,11 +7,13 @@
 #include "imagescrollarea.h"
 #include "database.h"
 #include "imageinfo.h"
+#include "imagescrollareagl.h"
 
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
     ImageScrollArea *m_image;
+    ImageScrollAreaGL *m_imageGL;
     ImageRingList *m_ringList;
     Database *m_database;
     ImageInfo *m_info;
@@ -30,7 +32,7 @@ protected:
 protected slots:
     void socketNotify();
     void updateWindowTitle();
-    void pixmapLoaded(QPixmap pix);
+    void pixmapLoaded(Image *image);
     void openFile();
     void markImage();
     void unmarkImage();

rawimage.h

@@ -31,6 +31,8 @@ public:
 
 class RawImageAbs
 {
+protected:
+    uint32_t m_width,m_height;
 public:
     virtual ~RawImageAbs(){}
     virtual bool imageStats(uint64_t *mean, double *stdDev, uint64_t *median, uint64_t *min, uint64_t *max) const = 0;
@@ -38,12 +40,19 @@ public:
     virtual int findPeaks(uint64_t background, double distance, std::vector<Peak> &peaks) const = 0;
     virtual RawImageAbs* medianFilter() const = 0;
     virtual void quarter() = 0;
+    uint32_t width() const
+    {
+        return m_width;
+    }
+    uint32_t height() const
+    {
+        return m_height;
+    }
 };
 
 template<typename T>
 class RawImage : public RawImageAbs
 {
-    uint32_t m_width,m_height;
     std::vector<T> m_img;
     bool checkPixel(T c, uint32_t x, uint32_t y) const
     {

resources.qrc

@@ -0,0 +1,6 @@
+<RCC>
+    <qresource prefix="/shaders">
+        <file>image.frag</file>
+        <file>image.vert</file>
+    </qresource>
+</RCC>

stretchpanel.cpp

@@ -0,0 +1,21 @@
+#include "stretchpanel.h"
+#include <QVBoxLayout>
+
+StretchPanel::StretchPanel(QWidget *parent) : QWidget(parent)
+{
+    QVBoxLayout *layout = new QVBoxLayout(this);
+    setLayout(layout);
+
+    m_lowSlider = new QSlider(Qt::Horizontal, this);
+    m_highSlider = new QSlider(Qt::Horizontal, this);
+
+    m_lowSlider->setRange(0, UINT16_MAX);
+    m_highSlider->setRange(0, UINT16_MAX);
+    m_highSlider->setValue(UINT16_MAX);
+
+    layout->addWidget(m_lowSlider);
+    layout->addWidget(m_highSlider);
+
+    connect(m_lowSlider, SIGNAL(valueChanged(int)), this, SIGNAL(lowChanged(int)));
+    connect(m_highSlider, SIGNAL(valueChanged(int)), this, SIGNAL(highChanged(int)));
+}

stretchpanel.h

@@ -0,0 +1,19 @@
+#ifndef STRETCHPANEL_H
+#define STRETCHPANEL_H
+
+#include <QWidget>
+#include <QSlider>
+
+class StretchPanel : public QWidget
+{
+    Q_OBJECT
+    QSlider *m_lowSlider;
+    QSlider *m_highSlider;
+public:
+    explicit StretchPanel(QWidget *parent = nullptr);
+signals:
+    void lowChanged(int low);
+    void highChanged(int high);
+};
+
+#endif // STRETCHPANEL_H

tenmon.pro

@@ -29,7 +29,9 @@ SOURCES += main.cpp\
     imageinfo.cpp \
     starfit.cpp \
     phd.cpp \
-    photocapture.cpp
+    photocapture.cpp \
+    imagescrollareagl.cpp \
+    stretchpanel.cpp
 
 HEADERS  += mainwindow.h \
     imagescrollarea.h \
@@ -40,4 +42,9 @@ HEADERS  += mainwindow.h \
     rawimage.h \
     starfit.h \
     phd.h \
-    photocapture.h
+    photocapture.h \
+    imagescrollareagl.h \
+    stretchpanel.h
+
+RESOURCES += \
+    resources.qrc