Fix visualization issue on ASI183MM/MC (and possibly other high resolution ASI cameras) where image is always black in preview window by disabling opengl rendering (which didn't seem to improve performances as much as expected, AND to cause rendering issues). (#92)

Author: GuLinux

src/commons/configuration.cpp

@@ -97,7 +97,6 @@ define_setting(max_display_fps, int, 30)
 define_setting(max_display_fps_recording, int, 15)
 define_setting(limit_fps, bool, true)
 define_setting(debayer, bool, true)
-define_setting(opengl, bool, true)
 define_setting(limit_fps_recording, bool, true)
 
 define_setting_enum(recording_limit_type, Configuration::RecordingLimit, Configuration::FramesNumber)

src/commons/configuration.h

@@ -41,7 +41,6 @@ class Configuration : public QObject
     declare_setting(limit_fps_recording, bool)
     declare_setting(debayer, bool)
     declare_setting(limit_fps, bool)
-    declare_setting(opengl, bool)
 
     declare_setting(buffered_output, bool )
     declare_setting(max_memory_usage, long long )

src/drivers/zwo_asi/asiimagingworker.cpp

@@ -20,7 +20,9 @@
 #include "zwoexception.h"
 #include <atomic>
 #include "commons/frame.h"
+#include <array>
 
+#define FRAMES_BUFFER 5
 using namespace std;
 
 DPTR_IMPL(ASIImagingWorker) {
@@ -35,6 +37,12 @@ DPTR_IMPL(ASIImagingWorker) {
   int getCVImageType();
   Frame::ColorFormat color_format;
   Frame::ColorFormat colorFormat() const;
+#ifdef FRAMES_BUFFER
+  array<FramePtr, FRAMES_BUFFER> frames;
+#endif
+  uint8_t current_frame = 0;
+  FramePtr new_frame() const;
+  uint8_t next_index();
 };
 
 ASIImagingWorker::ASIImagingWorker(const QRect& roi, int bin, const ASI_CAMERA_INFO& info, ASI_IMG_TYPE format)
@@ -59,6 +67,22 @@ ASIImagingWorker::ASIImagingWorker(const QRect& roi, int bin, const ASI_CAMERA_I
     d->color_format = Frame::Mono;
   }
   calc_exposure_timeout();
+#ifdef FRAMES_BUFFER
+  generate(begin(d->frames), end(d->frames), bind(&Private::new_frame, d.get()));
+#endif
+}
+
+FramePtr ASIImagingWorker::Private::new_frame() const {
+  // ASI CAMs are little endian
+  return make_shared<Frame>( format == ASI_IMG_RAW16 ? 16 : 8,  colorFormat(), QSize{roi.width(), roi.height()}, Frame::LittleEndian);
+}
+
+uint8_t ASIImagingWorker::Private::next_index() {
+#ifdef FRAMES_BUFFER
+    return (current_frame++) % frames.size();
+#else
+    return 0;
+#endif
 }
 
 ASIImagingWorker::~ASIImagingWorker()
@@ -83,8 +107,11 @@ void ASIImagingWorker::calc_exposure_timeout()
 
 FramePtr ASIImagingWorker::shoot()
 {
-  // ASI CAMs are little endian
-  auto frame = make_shared<Frame>( d->format == ASI_IMG_RAW16 ? 16 : 8,  d->colorFormat(), QSize{d->roi.width(), d->roi.height()}, Frame::LittleEndian);
+#ifdef FRAMES_BUFFER
+  FramePtr frame = d->frames[d->next_index()];
+#else
+  FramePtr frame = d->new_frame();
+#endif
   ASI_CHECK << ASIGetVideoData(d->info.CameraID, frame->data(), frame->size(), d->exposure_timeout) << "Capture frame";
   return frame;
 }

src/planetaryimager_mainwindow.cpp

@@ -163,15 +163,6 @@ PlanetaryImagerMainWindow::PlanetaryImagerMainWindow(
     d->ui->image->layout()->setMargin(0);
     d->ui->image->layout()->setSpacing(0);
     d->ui->image->layout()->addWidget(d->image_widget = new ZoomableImage(false));
-#ifdef HAVE_QT5_OPENGL // TODO: make configuration item
-    if(d->planetaryImager->configuration().opengl())
-    {
-      if (!QGLFormat::hasOpenGL())
-          qWarning() << "Window system does not support OpenGL.";
-      else
-          d->image_widget->setOpenGL();
-    }
-#endif
     d->image_widget->scene()->setBackgroundBrush(QBrush{Qt::black, Qt::Dense4Pattern});
     connect(d->image_widget, &ZoomableImage::zoomLevelChanged, d->statusbar_info_widget, &StatusBarInfoWidget::zoom);
     d->statusbar_info_widget->zoom(d->image_widget->zoomLevel());

src/widgets/configurationdialog.cpp

@@ -43,16 +43,10 @@ ConfigurationDialog::~ConfigurationDialog()
 
 ConfigurationDialog::ConfigurationDialog(Configuration &configuration, QWidget* parent) : QDialog(parent), dptr(configuration, this)
 {
-    static bool original_opengl_setting = d->configuration.opengl();
     d->ui.reset(new Ui::ConfigurationDialog);
     d->ui->setupUi(this);
-#ifndef HAVE_QT5_OPENGL
-    d->ui->opengl->hide();
-#endif
     connect(d->ui->debayer, &QCheckBox::toggled, bind(&Configuration::set_debayer, &d->configuration, _1));
-    connect(d->ui->opengl, &QCheckBox::toggled, bind(&Configuration::set_opengl, &d->configuration, _1));
     d->ui->debayer->setChecked(d->configuration.debayer());
-    d->ui->opengl->setChecked(d->configuration.opengl());
     d->ui->pauseShouldStopRecordingTimeout->setChecked(d->configuration.recording_pause_stops_timer());
     connect(d->ui->pauseShouldStopRecordingTimeout, &QCheckBox::toggled, bind(&Configuration::set_recording_pause_stops_timer, &d->configuration, _1));
 
@@ -174,11 +168,6 @@ ConfigurationDialog::ConfigurationDialog(Configuration &configuration, QWidget*
     }
     d->ui->video_codec->setCurrentIndex(d->ui->video_codec->findData(d->configuration.video_codec()));
     connect(d->ui->video_codec, F_PTR(QComboBox, activated, int), [=](int index){ d->configuration.set_video_codec(d->ui->video_codec->itemData(index).toString()); });
-    connect(this, &QDialog::accepted, [this] {
-      if(original_opengl_setting != d->configuration.opengl()) {
-        QMessageBox::information(this, tr("Restart required"), tr("You changed the OpenGL setting. Please restart PlanetaryImage for this change to take effect"));
-      }
-    });
 
     d->ui->pixelDataEndianess->addItem("camera default", static_cast<int>(Configuration::CaptureEndianess::CameraDefault));
     d->ui->pixelDataEndianess->addItem("little-endian",  static_cast<int>(Configuration::CaptureEndianess::Little));

src/widgets/configurationdialog.ui

@@ -27,7 +27,7 @@
    <item row="1" column="0">
     <widget class="QTabWidget" name="configurationTab">
      <property name="currentIndex">
-      <number>2</number>
+      <number>0</number>
      </property>
      <widget class="QWidget" name="tab">
       <attribute name="title">
@@ -40,16 +40,17 @@
           <string>Image Display</string>
          </property>
          <layout class="QGridLayout" name="gridLayout">
-          <item row="2" column="0">
-           <widget class="QCheckBox" name="enable_fps_limit_recording">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
-              <horstretch>1</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
+          <item row="2" column="2">
+           <widget class="QLabel" name="label_16">
+            <property name="text">
+             <string>FPS</string>
             </property>
+           </widget>
+          </item>
+          <item row="0" column="0" colspan="3">
+           <widget class="QCheckBox" name="debayer">
             <property name="text">
-             <string>Set FPS limit while recording</string>
+             <string>Debayer images (colour camera only in raw mode)</string>
             </property>
            </widget>
           </item>
@@ -60,16 +61,16 @@
             </property>
            </widget>
           </item>
-          <item row="1" column="0">
-           <widget class="QCheckBox" name="enable_fps_limit">
+          <item row="2" column="1">
+           <widget class="QSpinBox" name="fps_limit_recording">
             <property name="sizePolicy">
              <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
               <horstretch>1</horstretch>
               <verstretch>0</verstretch>
              </sizepolicy>
             </property>
-            <property name="text">
-             <string>Set FPS limit while not recording</string>
+            <property name="minimum">
+             <number>1</number>
             </property>
            </widget>
           </item>
@@ -86,27 +87,33 @@
             </property>
            </widget>
           </item>
-          <item row="2" column="1">
-           <widget class="QSpinBox" name="fps_limit_recording">
+          <item row="1" column="0">
+           <widget class="QCheckBox" name="enable_fps_limit">
             <property name="sizePolicy">
              <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
               <horstretch>1</horstretch>
               <verstretch>0</verstretch>
              </sizepolicy>
             </property>
-            <property name="minimum">
-             <number>1</number>
+            <property name="text">
+             <string>Set FPS limit while not recording</string>
             </property>
            </widget>
           </item>
-          <item row="2" column="2">
-           <widget class="QLabel" name="label_16">
+          <item row="2" column="0">
+           <widget class="QCheckBox" name="enable_fps_limit_recording">
+            <property name="sizePolicy">
+             <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+              <horstretch>1</horstretch>
+              <verstretch>0</verstretch>
+             </sizepolicy>
+            </property>
             <property name="text">
-             <string>FPS</string>
+             <string>Set FPS limit while recording</string>
             </property>
            </widget>
           </item>
-          <item row="4" column="1">
+          <item row="3" column="1">
            <spacer name="verticalSpacer_3">
             <property name="orientation">
              <enum>Qt::Vertical</enum>
@@ -119,20 +126,6 @@
             </property>
            </spacer>
           </item>
-          <item row="0" column="0" colspan="3">
-           <widget class="QCheckBox" name="debayer">
-            <property name="text">
-             <string>Debayer images (colour camera only in raw mode)</string>
-            </property>
-           </widget>
-          </item>
-          <item row="3" column="0" colspan="3">
-           <widget class="QCheckBox" name="opengl">
-            <property name="text">
-             <string>Use OpenGL rendering (requires restart)</string>
-            </property>
-           </widget>
-          </item>
          </layout>
         </widget>
        </item>