Add gstreamer debug log option, and dot file output

src/QGCApplication.cc

@@ -311,8 +311,20 @@ QGCApplication::QGCApplication(int &argc, char* argv[], bool unitTesting)
     }
 #endif
 
+    // gstreamer debug settings
+    QString savePath, gstDebugLevel;
+    if (settings.contains(AppSettings::savePathName)) {
+         savePath = settings.value("SavePath").toString() + "/Logs/gst"; // hardcode log path here, appsetting is not available yet
+         if (!QDir(savePath).exists()) {
+             QDir().mkdir(savePath);
+         }
+    }
+    if (settings.contains(AppSettings::gstDebugName)) {
+        gstDebugLevel = "*:" + settings.value("GstreamerDebugLevel").toString();
+    }
+
     // Initialize Video Streaming
-    initializeVideoStreaming(argc, argv);
+    initializeVideoStreaming(argc, argv, savePath.toUtf8().data(), gstDebugLevel.toUtf8().data());
 
     _toolbox = new QGCToolbox(this);
     _toolbox->setChildToolboxes();

src/QmlControls/AppMessages.qml

@@ -15,6 +15,8 @@ import QtQuick.Dialogs          1.2
 import QGroundControl               1.0
 import QGroundControl.Palette       1.0
 import QGroundControl.Controls      1.0
+import QGroundControl.FactSystem    1.0
+import QGroundControl.FactControls  1.0
 import QGroundControl.Controllers   1.0
 import QGroundControl.ScreenTools   1.0
 
@@ -140,6 +142,24 @@ QGCView {
                 text:            qsTr("Save App Log")
             }
 
+            QGCLabel {
+                id:                  gstLabel
+                anchors.baseline:    gstCombo.baseline
+                anchors.right:       gstCombo.left
+                anchors.rightMargin: ScreenTools.defaultFontPixelWidth
+                text:                "gstreamer debug level:"
+            }
+
+            FactComboBox {
+                id:                  gstCombo
+                anchors.right:       followTail.left
+                anchors.rightMargin: ScreenTools.defaultFontPixelWidth*20
+                anchors.bottom:      parent.bottom
+                width:               ScreenTools.defaultFontPixelWidth*20
+                model:               ["disabled", "1", "2", "3", "4", "5", "6", "7", "8"]
+                fact:                QGroundControl.settingsManager.appSettings.gstDebug
+            }
+
             BusyIndicator {
                 id:              writeBusy
                 anchors.bottom:  writeButton.bottom

src/Settings/App.SettingsGroup.json

@@ -103,6 +103,13 @@
     "type":             "bool",
     "defaultValue":     false
 },
+{
+    "name":             "GstreamerDebugLevel",
+    "shortDescription": "Video streaming debug",
+    "longDescription":  "Sets the environment variable GST_DEBUG for all pipeline elements on boot.",
+    "type":             "uint8",
+    "defaultValue":     0
+},
 {
     "name":             "AutoLoadMissions",
     "shortDescription": "AutoLoad mission on vehicle connect",

src/Settings/AppSettings.cc

@@ -36,6 +36,7 @@ const char* AppSettings::autoLoadMissionsName =                         "AutoLoa
 const char* AppSettings::mapboxTokenName =                              "MapboxToken";
 const char* AppSettings::esriTokenName =                                "EsriToken";
 const char* AppSettings::defaultFirmwareTypeName =                      "DefaultFirmwareType";
+const char* AppSettings::gstDebugName =                                 "GstreamerDebugLevel";
 
 const char* AppSettings::parameterFileExtension =   "params";
 const char* AppSettings::planFileExtension =        "plan";
@@ -75,6 +76,7 @@ AppSettings::AppSettings(QObject* parent)
     , _mapboxTokenFact(NULL)
     , _esriTokenFact(NULL)
     , _defaultFirmwareTypeFact(NULL)
+    , _gstDebugFact(NULL)
 {
     QQmlEngine::setObjectOwnership(this, QQmlEngine::CppOwnership);
     qmlRegisterUncreatableType<AppSettings>("QGroundControl.SettingsManager", 1, 0, "AppSettings", "Reference only");
@@ -232,6 +234,15 @@ Fact* AppSettings::virtualJoystick(void)
     return _virtualJoystickFact;
 }
 
+Fact* AppSettings::gstDebug(void)
+{
+    if (!_gstDebugFact) {
+        _gstDebugFact = _createSettingsFact(gstDebugName);
+    }
+
+    return _gstDebugFact;
+}
+
 Fact* AppSettings::indoorPalette(void)
 {
     if (!_indoorPaletteFact) {

src/Settings/AppSettings.h

@@ -40,6 +40,7 @@ public:
     Q_PROPERTY(Fact* mapboxToken                        READ mapboxToken                        CONSTANT)
     Q_PROPERTY(Fact* esriToken                          READ esriToken                          CONSTANT)
     Q_PROPERTY(Fact* defaultFirmwareType                READ defaultFirmwareType                CONSTANT)
+    Q_PROPERTY(Fact* gstDebug                           READ gstDebug                           CONSTANT)
 
     Q_PROPERTY(QString missionSavePath      READ missionSavePath    NOTIFY savePathsChanged)
     Q_PROPERTY(QString parameterSavePath    READ parameterSavePath  NOTIFY savePathsChanged)
@@ -75,6 +76,7 @@ public:
     Fact* mapboxToken                       (void);
     Fact* esriToken                         (void);
     Fact* defaultFirmwareType               (void);
+    Fact* gstDebug                          (void);
 
     QString missionSavePath     (void);
     QString parameterSavePath   (void);
@@ -107,6 +109,7 @@ public:
     static const char* mapboxTokenName;
     static const char* esriTokenName;
     static const char* defaultFirmwareTypeName;
+    static const char* gstDebugName;
 
     // Application wide file extensions
     static const char* parameterFileExtension;
@@ -154,6 +157,7 @@ private:
     SettingsFact* _mapboxTokenFact;
     SettingsFact* _esriTokenFact;
     SettingsFact* _defaultFirmwareTypeFact;
+    SettingsFact* _gstDebugFact;
 };
 
 #endif

src/VideoStreaming/VideoReceiver.cc

@@ -366,6 +366,7 @@ VideoReceiver::start()
             bus = NULL;
         }
 
+        GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(_pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "pipeline-paused");
         running = gst_element_set_state(_pipeline, GST_STATE_PLAYING) != GST_STATE_CHANGE_FAILURE;
 
     } while(0);
@@ -419,6 +420,7 @@ VideoReceiver::start()
 
         _running = false;
     } else {
+        GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(_pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "pipeline-playing");
         _running = true;
         qCDebug(VideoReceiverLog) << "Running";
     }
@@ -676,6 +678,8 @@ VideoReceiver::startRecording(const QString &videoFile)
     gst_pad_link(_sink->teepad, sinkpad);
     gst_object_unref(sinkpad);
 
+    GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(_pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "pipeline-recording");
+
     _recording = true;
     emit recordingChanged();
     qCDebug(VideoReceiverLog) << "Recording started";

src/VideoStreaming/VideoStreaming.cc

@@ -101,7 +101,7 @@ int start_logger(const char *app_name)
 }
 #endif
 
-void initializeVideoStreaming(int &argc, char* argv[])
+void initializeVideoStreaming(int &argc, char* argv[], char* logpath, char* debuglevel)
 {
 #if defined(QGC_GST_STREAMING)
     #ifdef __macos__
@@ -119,12 +119,19 @@ void initializeVideoStreaming(int &argc, char* argv[])
         QString currentDir = QCoreApplication::applicationDirPath();
         qgcputenv("GST_PLUGIN_PATH", currentDir, "/gstreamer-plugins");
     #endif
+
+
         // Initialize GStreamer
-        #ifdef ANDDROID_GST_DEBUG
-        start_logger("gst_log");
-        qputenv("GST_DEBUG", "*:4");
-        qputenv("GST_DEBUG_NO_COLOR", "1");
-        #endif
+        if (logpath) {
+            if (debuglevel) {
+                qputenv("GST_DEBUG", debuglevel);
+            }
+            qputenv("GST_DEBUG_NO_COLOR", "1");
+            qputenv("GST_DEBUG_FILE", QString("%1/%2").arg(logpath).arg("gstreamer-log.txt").toUtf8());
+            qputenv("GST_DEBUG_DUMP_DOT_DIR", logpath);
+        }
+
+
         GError* error = NULL;
         if (!gst_init_check(&argc, &argv, &error)) {
             qCritical() << "gst_init_check() failed: " << error->message;

src/VideoStreaming/VideoStreaming.h

@@ -17,7 +17,7 @@
 #ifndef VIDEO_STREAMING_H
 #define VIDEO_STREAMING_H
 
-extern void initializeVideoStreaming    (int &argc, char *argv[]);
+extern void initializeVideoStreaming    (int &argc, char *argv[], char* filename, char* debuglevel);
 extern void shutdownVideoStreaming      ();
 
 #endif // VIDEO_STREAMING_H