Merge pull request #5721 from dannysmyda/6069-gstreamer-crash-with-review-fixes

6069 gstreamer crash with review fixes

Core/nbproject/project.properties

@@ -45,7 +45,6 @@ file.reference.jericho-html-3.3.jar=release/modules/ext/jericho-html-3.3.jar
 file.reference.jgraphx-v3.8.0.jar=release/modules/ext/jgraphx-v3.8.0.jar
 file.reference.jhighlight-1.0.3.jar=release\\modules\\ext\\jhighlight-1.0.3.jar
 file.reference.jmatio-1.5.jar=release\\modules\\ext\\jmatio-1.5.jar
-file.reference.jna-5.1.0.jar=release\\modules\\ext\\jna-5.1.0.jar
 file.reference.json-simple-1.1.1.jar=release\\modules\\ext\\json-simple-1.1.1.jar
 file.reference.jsoup-1.11.3.jar=release\\modules\\ext\\jsoup-1.11.3.jar
 file.reference.jul-to-slf4j-1.7.25.jar=release\\modules\\ext\\jul-to-slf4j-1.7.25.jar
@@ -97,7 +96,6 @@ file.reference.xz-1.8.jar=release\\modules\\ext\\xz-1.8.jar
 file.reference.zookeeper-3.4.6.jar=release/modules/ext/zookeeper-3.4.6.jar
 file.reference.SparseBitSet-1.1.jar=release/modules/ext/SparseBitSet-1.1.jar
 file.reference.commons-validator-1.6.jar=release/modules/ext/commons-validator-1.6.jar
-file.reference.jna-3.4.0.jar=release/modules/ext/jna-3.4.0.jar
 file.reference.api-common-1.7.0.jar=release/modules/ext/api-common-1.7.0.jar
 file.reference.gax-1.44.0.jar=release/modules/ext/gax-1.44.0.jar
 file.reference.gax-grpc-1.44.0.jar=release/modules/ext/gax-grpc-1.44.0.jar

Core/nbproject/project.xml

@@ -615,10 +615,6 @@
                 <runtime-relative-path>ext/commons-validator-1.6.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/commons-validator-1.6.jar</binary-origin>
             </class-path-extension>
-            <class-path-extension>
-                <runtime-relative-path>ext/jna-5.1.0.jar</runtime-relative-path>
-                <binary-origin>release\modules\ext\jna-5.1.0.jar</binary-origin>
-            </class-path-extension>
             <class-path-extension>
                 <runtime-relative-path>ext/jbig2-imageio-3.0.2.jar</runtime-relative-path>
                 <binary-origin>release\modules\ext\jbig2-imageio-3.0.2.jar</binary-origin>

Core/src/org/sleuthkit/autopsy/contentviewers/Bundle.properties-MERGED

@@ -41,6 +41,7 @@ MediaFileViewer.AccessibleContext.accessibleDescription=
 MediaFileViewer.title=Media
 MediaFileViewer.toolTip=Displays supported multimedia files (images, videos, audio)
 MediaPlayerPanel.noSupport=File not supported.
+MediaPlayerPanel.playbackDisabled=A problem was encountered with the video and audio playback service. Video and audio playback will be disabled for the remainder of the session.
 MediaPlayerPanel.timeFormat=%02d:%02d:%02d
 MediaPlayerPanel.unknownTime=Unknown
 MediaViewImagePanel.createTagOption=Create
@@ -168,7 +169,7 @@ MediaPlayerPanel.playBackSpeedLabel.text=Speed:
 SQLiteViewer.readTable.errorText=Error getting rows for table: {0}
 # {0} - tableName
 SQLiteViewer.selectTable.errorText=Error getting row count for table: {0}
-TextTranslatableComponent.setPanelContent.onSetContentError=Unable to display text at this time.
-TextTranslatableComponent.setTranslated.onTranslateError=Unable to translate text at this time.
 TranslatablePanel.comboBoxOption.originalText=Original Text
 TranslatablePanel.comboBoxOption.translatedText=Translated Text
+# {0} - exception message
+TranslatablePanel.onSetContentError.text=There was an error displaying the text: {0}

Core/src/org/sleuthkit/autopsy/contentviewers/MediaFileViewer.java

@@ -194,6 +194,6 @@ class MediaFileViewer extends javax.swing.JPanel implements FileTypeViewer {
 
     @Override
     public boolean isSupported(AbstractFile file){
-        return true;
+        return mediaPlayerPanel.isSupported(file) || imagePanel.isSupported(file);
     }
 }

Core/src/org/sleuthkit/autopsy/contentviewers/MediaPlayerPanel.form

@@ -63,7 +63,7 @@
                           <EmptySpace max="-2" attributes="0"/>
                           <Group type="103" groupAlignment="0" max="-2" attributes="0">
                               <Component id="progressLabel" max="32767" attributes="0"/>
-                              <Component id="playBackPanel" pref="0" max="32767" attributes="0"/>
+                              <Component id="playBackPanel" max="32767" attributes="0"/>
                           </Group>
                           <EmptySpace min="-2" pref="10" max="-2" attributes="0"/>
                       </Group>
@@ -129,12 +129,6 @@
                 <Property name="text" type="java.lang.String" editor="org.netbeans.modules.i18n.form.FormI18nStringEditor">
                   <ResourceString bundle="org/sleuthkit/autopsy/contentviewers/Bundle.properties" key="MediaPlayerPanel.playButton.text" replaceFormat="org.openide.util.NbBundle.getMessage({sourceFileName}.class, &quot;{key}&quot;)"/>
                 </Property>
-                <Property name="maximumSize" type="java.awt.Dimension" editor="org.netbeans.beaninfo.editors.DimensionEditor">
-                  <Dimension value="[53, 29]"/>
-                </Property>
-                <Property name="minimumSize" type="java.awt.Dimension" editor="org.netbeans.beaninfo.editors.DimensionEditor">
-                  <Dimension value="[53, 29]"/>
-                </Property>
                 <Property name="preferredSize" type="java.awt.Dimension" editor="org.netbeans.beaninfo.editors.DimensionEditor">
                   <Dimension value="[49, 29]"/>
                 </Property>

Core/src/org/sleuthkit/autopsy/contentviewers/MediaPlayerPanel.java

@@ -74,7 +74,9 @@ import org.freedesktop.gstreamer.Format;
 import org.freedesktop.gstreamer.GstException;
 import org.freedesktop.gstreamer.event.SeekFlags;
 import org.freedesktop.gstreamer.event.SeekType;
-import org.sleuthkit.autopsy.coreutils.PlatformUtil;
+import org.sleuthkit.autopsy.contentviewers.utils.GstLoader;
+import org.sleuthkit.autopsy.contentviewers.utils.GstLoader.GstStatus;
+import org.sleuthkit.autopsy.coreutils.MessageNotifyUtil;
 
 /**
  * This is a video player that is part of the Media View layered pane. It uses
@@ -213,6 +215,8 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
     //and the TrackListener on the slider itself.
     private final Semaphore sliderLock;
 
+    private static volatile boolean IS_GST_ENABLED = true;
+
     /**
      * Creates a new MediaPlayerPanel
      */
@@ -222,18 +226,10 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
         //True for fairness. In other words,
         //acquire() calls are processed in order of invocation.
         sliderLock = new Semaphore(1, true);
-
-        /**
-         * See JIRA-5888 for details. Initializing gstreamer here is more stable
-         * on Windows.
-         */
-        if (PlatformUtil.isWindowsOS()) {
-            Gst.init();
-        }
     }
 
     private void customizeComponents() {
-        progressSlider.setEnabled(false); // disable slider; enable after user plays vid
+        enableComponents(false);
         progressSlider.setMinimum(0);
         progressSlider.setMaximum(PROGRESS_SLIDER_SIZE);
         progressSlider.setValue(0);
@@ -390,13 +386,16 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
         }
         timer.stop();
         if (gstPlayBin != null) {
-            gstPlayBin.stop();
-            gstPlayBin.getBus().disconnect(endOfStreamListener);
-            gstPlayBin.getBus().disconnect(stateChangeListener);
-            gstPlayBin.getBus().disconnect(errorListener);
-            gstPlayBin.dispose();
-            fxAppSink.clear();
-            gstPlayBin = null;
+            Gst.getExecutor().submit(() -> {
+                gstPlayBin.stop();
+                gstPlayBin.getBus().disconnect(endOfStreamListener);
+                gstPlayBin.getBus().disconnect(stateChangeListener);
+                gstPlayBin.getBus().disconnect(errorListener);
+                gstPlayBin.getBus().dispose();
+                gstPlayBin.dispose();
+                fxAppSink.clear();
+                gstPlayBin = null;
+            });
         }
         videoPanel.removeAll();
         resetComponents();
@@ -425,6 +424,10 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
 
     @Override
     public boolean isSupported(AbstractFile file) {
+        if (!IS_GST_ENABLED) {
+            return false;
+        }
+
         String extension = file.getNameExtension();
         /**
          * Although it seems too restrictive, requiring both a supported
@@ -542,6 +545,11 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
         /*
          * Initialize the playback components if the extraction was successful.
          */
+        @NbBundle.Messages({
+            "MediaPlayerPanel.playbackDisabled=A problem was encountered with"
+            + " the video and audio playback service. Video and audio "
+            + "playback will be disabled for the remainder of the session."
+        })
         @Override
         protected void done() {
             try {
@@ -551,44 +559,49 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
                     return;
                 }
 
-                // Initialize Gstreamer. It is safe to call this for every file.
-                // It was moved here from the constructor because having it happen
-                // earlier resulted in conflicts on Linux. See JIRA-5888.
-                if (!PlatformUtil.isWindowsOS()) {
-                    Gst.init();
+                GstStatus loadStatus = GstLoader.tryLoad();
+                if (loadStatus == GstStatus.FAILURE) {
+                    MessageNotifyUtil.Message.error(Bundle.MediaPlayerPanel_playbackDisabled());
+
+                    // This will disable the panel for future use.
+                    IS_GST_ENABLED = false;
+                    return;
                 }
 
-                //Video is ready for playback. Create new components
-                gstPlayBin = new PlayBin("VideoPlayer", tempFile.toURI());
-                //Configure event handling
-                if (gstPlayBin != null) {
+                Gst.getExecutor().submit(() -> {
+                    //Video is ready for playback. Create new components
+                    gstPlayBin = new PlayBin("VideoPlayer", tempFile.toURI());
+                    //Configure event handling
                     Bus playBinBus = gstPlayBin.getBus();
                     playBinBus.connect(endOfStreamListener);
                     playBinBus.connect(stateChangeListener);
                     playBinBus.connect(errorListener);
-                }
 
-                if (this.isCancelled()) {
-                    return;
-                }
+                    if (this.isCancelled()) {
+                        return;
+                    }
 
-                JFXPanel fxPanel = new JFXPanel();
-                videoPanel.removeAll();
-                videoPanel.setLayout(new BoxLayout(videoPanel, BoxLayout.Y_AXIS));
-                videoPanel.add(fxPanel);
-                fxAppSink = new JavaFxAppSink("JavaFxAppSink", fxPanel);
-                if (gstPlayBin != null) {
-                    gstPlayBin.setVideoSink(fxAppSink);
-                }
-                if (this.isCancelled()) {
-                    return;
-                }
-                if (gstPlayBin != null) {
-                    gstPlayBin.setVolume((audioSlider.getValue() * 2.0) / 100.0);
-                    gstPlayBin.pause();
-                }
-                timer.start();
-                enableComponents(true);
+                    JFXPanel fxPanel = new JFXPanel();
+                    videoPanel.removeAll();
+                    videoPanel.setLayout(new BoxLayout(videoPanel, BoxLayout.Y_AXIS));
+                    videoPanel.add(fxPanel);
+                    fxAppSink = new JavaFxAppSink("JavaFxAppSink", fxPanel);
+                    if (gstPlayBin != null) {
+                        gstPlayBin.setVideoSink(fxAppSink);
+                    }
+                    if (this.isCancelled()) {
+                        return;
+                    }
+                    if (gstPlayBin != null) {
+                        gstPlayBin.setVolume((audioSlider.getValue() * 2.0) / 100.0);
+                        gstPlayBin.pause();
+                    }
+
+                    timer.start();
+                    SwingUtilities.invokeLater(() -> {
+                        enableComponents(true);
+                    });
+                });
             } catch (CancellationException ex) {
                 logger.log(Level.INFO, "Media buffering was canceled."); //NON-NLS
             } catch (InterruptedException ex) {
@@ -607,23 +620,29 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
         @Override
         public void actionPerformed(ActionEvent e) {
             if (!progressSlider.getValueIsAdjusting() && gstPlayBin != null) {
-                sliderLock.acquireUninterruptibly();
-                long position = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
-                long duration = gstPlayBin.queryDuration(TimeUnit.NANOSECONDS);
-                /**
-                 * Duration may not be known until there is video data in the
-                 * pipeline. We start this updater when data-flow has just been
-                 * initiated so buffering may still be in progress.
-                 */
-                if (duration >= 0 && position >= 0) {
-                    double relativePosition = (double) position / duration;
-                    progressSlider.setValue((int) (relativePosition * PROGRESS_SLIDER_SIZE));
-                }
+                Gst.getExecutor().submit(() -> {
+                    try {
+                        sliderLock.acquireUninterruptibly();
+                        long position = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
+                        long duration = gstPlayBin.queryDuration(TimeUnit.NANOSECONDS);
+                        /**
+                         * Duration may not be known until there is video data
+                         * in the pipeline. We start this updater when data-flow
+                         * has just been initiated so buffering may still be in
+                         * progress.
+                         */
+                        if (duration >= 0 && position >= 0) {
+                            double relativePosition = (double) position / duration;
+                            progressSlider.setValue((int) (relativePosition * PROGRESS_SLIDER_SIZE));
+                        }
 
-                SwingUtilities.invokeLater(() -> {
-                    updateTimeLabel(position, duration);
+                        SwingUtilities.invokeLater(() -> {
+                            updateTimeLabel(position, duration);
+                        });
+                    } finally {
+                        sliderLock.release();
+                    }
                 });
-                sliderLock.release();
             }
         }
     }
@@ -643,7 +662,7 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
          * thumb at the given width and height. It also paints the track blue as
          * the thumb progresses.
          *
-         * @param slider         JSlider component
+         * @param slider JSlider component
          * @param thumbDimension
          */
         public CircularJSliderUI(JSlider slider, Dimension thumbDimension) {
@@ -991,96 +1010,104 @@ public class MediaPlayerPanel extends JPanel implements MediaFileViewer.MediaVie
     }// </editor-fold>//GEN-END:initComponents
 
     private void rewindButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rewindButtonActionPerformed
-        if (gstPlayBin != null) {
-            long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
-            //Skip 30 seconds.
-            long rewindDelta = TimeUnit.NANOSECONDS.convert(SKIP_IN_SECONDS, TimeUnit.SECONDS);
-            //Ensure new video position is within bounds
-            long newTime = Math.max(currentTime - rewindDelta, 0);
-            double playBackRate = getPlayBackRate();
-            gstPlayBin.seek(playBackRate,
-                    Format.TIME,
-                    //FLUSH - flushes the pipeline
-                    //ACCURATE - video will seek exactly to the position requested
-                    EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
-                    //Set the start position to newTime
-                    SeekType.SET, newTime,
-                    //Do nothing for the end position
-                    SeekType.NONE, -1);
-        }
-    }//GEN-LAST:event_rewindButtonActionPerformed
-
-    private void fastForwardButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fastForwardButtonActionPerformed
-        if (gstPlayBin != null) {
-            long duration = gstPlayBin.queryDuration(TimeUnit.NANOSECONDS);
-            long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
-            //Skip 30 seconds.
-            long fastForwardDelta = TimeUnit.NANOSECONDS.convert(SKIP_IN_SECONDS, TimeUnit.SECONDS);
-            //Don't allow skipping within 2 seconds of video ending. Skipping right to
-            //the end causes undefined behavior for some gstreamer plugins.
-            long twoSecondsInNano = TimeUnit.NANOSECONDS.convert(2, TimeUnit.SECONDS);
-            if ((duration - currentTime) <= twoSecondsInNano) {
-                return;
-            }
-
-            long newTime;
-            if (currentTime + fastForwardDelta >= duration) {
-                //If there are less than 30 seconds left, only fast forward to the midpoint.
-                newTime = currentTime + (duration - currentTime) / 2;
-            } else {
-                newTime = currentTime + fastForwardDelta;
-            }
-
-            double playBackRate = getPlayBackRate();
-            gstPlayBin.seek(playBackRate,
-                    Format.TIME,
-                    //FLUSH - flushes the pipeline
-                    //ACCURATE - video will seek exactly to the position requested
-                    EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
-                    //Set the start position to newTime
-                    SeekType.SET, newTime,
-                    //Do nothing for the end position
-                    SeekType.NONE, -1);
-        }
-    }//GEN-LAST:event_fastForwardButtonActionPerformed
-
-    private void playButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_playButtonActionPerformed
-        if (gstPlayBin != null) {
-            if (gstPlayBin.isPlaying()) {
-                gstPlayBin.pause();
-            } else {
-                double playBackRate = getPlayBackRate();
+        Gst.getExecutor().submit(() -> {
+            if (gstPlayBin != null) {
                 long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
-                //Set playback rate before play.
+                //Skip 30 seconds.
+                long rewindDelta = TimeUnit.NANOSECONDS.convert(SKIP_IN_SECONDS, TimeUnit.SECONDS);
+                //Ensure new video position is within bounds
+                long newTime = Math.max(currentTime - rewindDelta, 0);
+                double playBackRate = getPlayBackRate();
                 gstPlayBin.seek(playBackRate,
                         Format.TIME,
                         //FLUSH - flushes the pipeline
                         //ACCURATE - video will seek exactly to the position requested
                         EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
                         //Set the start position to newTime
-                        SeekType.SET, currentTime,
+                        SeekType.SET, newTime,
                         //Do nothing for the end position
                         SeekType.NONE, -1);
-                gstPlayBin.play();
             }
-        }
-    }//GEN-LAST:event_playButtonActionPerformed
+        });
+    }//GEN-LAST:event_rewindButtonActionPerformed
 
-    private void playBackSpeedComboBoxActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_playBackSpeedComboBoxActionPerformed
-        if (gstPlayBin != null) {
-            double playBackRate = getPlayBackRate();
-            long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
-            gstPlayBin.seek(playBackRate,
-                    Format.TIME,
-                    //FLUSH - flushes the pipeline
-                    //ACCURATE - video will seek exactly to the position requested
-                    EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
-                    //Set the position to the currentTime, we are only adjusting the
-                    //playback rate.
-                    SeekType.SET, currentTime,
-                    SeekType.NONE, 0);
-        }
-    }//GEN-LAST:event_playBackSpeedComboBoxActionPerformed
+    private void fastForwardButtonActionPerformed(java.awt.event.ActionEvent evt) {
+        Gst.getExecutor().submit(() -> {
+            if (gstPlayBin != null) {
+                long duration = gstPlayBin.queryDuration(TimeUnit.NANOSECONDS);
+                long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
+                //Skip 30 seconds.
+                long fastForwardDelta = TimeUnit.NANOSECONDS.convert(SKIP_IN_SECONDS, TimeUnit.SECONDS);
+                //Don't allow skipping within 2 seconds of video ending. Skipping right to
+                //the end causes undefined behavior for some gstreamer plugins.
+                long twoSecondsInNano = TimeUnit.NANOSECONDS.convert(2, TimeUnit.SECONDS);
+                if ((duration - currentTime) <= twoSecondsInNano) {
+                    return;
+                }
+
+                long newTime;
+                if (currentTime + fastForwardDelta >= duration) {
+                    //If there are less than 30 seconds left, only fast forward to the midpoint.
+                    newTime = currentTime + (duration - currentTime) / 2;
+                } else {
+                    newTime = currentTime + fastForwardDelta;
+                }
+
+                double playBackRate = getPlayBackRate();
+                gstPlayBin.seek(playBackRate,
+                        Format.TIME,
+                        //FLUSH - flushes the pipeline
+                        //ACCURATE - video will seek exactly to the position requested
+                        EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
+                        //Set the start position to newTime
+                        SeekType.SET, newTime,
+                        //Do nothing for the end position
+                        SeekType.NONE, -1);
+            }
+        });
+    }
+
+    private void playButtonActionPerformed(java.awt.event.ActionEvent evt) {
+        Gst.getExecutor().submit(() -> {
+            if (gstPlayBin != null) {
+                if (gstPlayBin.isPlaying()) {
+                    gstPlayBin.pause();
+                } else {
+                    double playBackRate = getPlayBackRate();
+                    long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
+                    //Set playback rate before play.
+                    gstPlayBin.seek(playBackRate,
+                            Format.TIME,
+                            //FLUSH - flushes the pipeline
+                            //ACCURATE - video will seek exactly to the position requested
+                            EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
+                            //Set the start position to newTime
+                            SeekType.SET, currentTime,
+                            //Do nothing for the end position
+                            SeekType.NONE, -1);
+                    gstPlayBin.play();
+                }
+            }
+        });
+    }
+
+    private void playBackSpeedComboBoxActionPerformed(java.awt.event.ActionEvent evt) {
+        Gst.getExecutor().submit(() -> {
+            if (gstPlayBin != null) {
+                double playBackRate = getPlayBackRate();
+                long currentTime = gstPlayBin.queryPosition(TimeUnit.NANOSECONDS);
+                gstPlayBin.seek(playBackRate,
+                        Format.TIME,
+                        //FLUSH - flushes the pipeline
+                        //ACCURATE - video will seek exactly to the position requested
+                        EnumSet.of(SeekFlags.FLUSH, SeekFlags.ACCURATE),
+                        //Set the position to the currentTime, we are only adjusting the
+                        //playback rate.
+                        SeekType.SET, currentTime,
+                        SeekType.NONE, 0);
+            }
+        });
+    }
 
     // Variables declaration - do not modify//GEN-BEGIN:variables
     private javax.swing.JLabel VolumeIcon;

Core/src/org/sleuthkit/autopsy/contentviewers/utils/GstLoader.java

@@ -0,0 +1,74 @@
+/*
+ * Autopsy Forensic Browser
+ *
+ * Copyright 2020 Basis Technology Corp.
+ * Contact: carrier <at> sleuthkit <dot> org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sleuthkit.autopsy.contentviewers.utils;
+
+import java.util.logging.Level;
+import org.freedesktop.gstreamer.Gst;
+import org.sleuthkit.autopsy.coreutils.Logger;
+
+/**
+ * A utility class that loads the gstreamer bindings.
+ */
+public final class GstLoader {
+
+    private static final Logger logger = Logger.getLogger(GstLoader.class.getName());
+    private static GstStatus status;
+
+    /**
+     * Attempts to load the gstreamer bindings. Only one attempt will be
+     * performed per Autopsy process. Clients should not attempt to interact
+     * with the gstreamer bindings unless the load was successful.
+     *
+     * @return Status - SUCCESS or FAILURE
+     */
+    public synchronized static GstStatus tryLoad() {
+        // Null is our 'unknown' status. Prior to the first call, the status
+        // is unknown.
+        if (status != null) {
+            return status;
+        }
+
+        try {
+            // Setting the following property causes the GST
+            // Java bindings to call dispose() on the GST 
+            // service thread instead of running it in the GST
+            // Native Object Reaper thread.
+            System.setProperty("glib.reapOnEDT", "true");
+            Gst.init();
+            status = GstStatus.SUCCESS;
+        } catch (Throwable ex) {
+            status = GstStatus.FAILURE;
+            logger.log(Level.WARNING, "Failed to load gsteamer bindings", ex);
+        }
+
+        return status;
+    }
+
+    /**
+     * The various init statuses that tryLoad can return.
+     */
+    public enum GstStatus {
+        SUCCESS, FAILURE
+    }
+    
+    private GstLoader() {
+        
+    }
+}

CoreLibs/ivy.xml

@@ -14,8 +14,7 @@
         
         <!-- for viewers -->
         <dependency conf="autopsy_core->*" org="org.freedesktop.gstreamer" name="gst1-java-core" rev="1.0.0"/>
-        <dependency conf="autopsy_core->*" org="net.java.dev.jna" name="jna" rev="3.4.0"/>
-        <dependency conf="autopsy_core->*" org="net.java.dev.jna" name="platform" rev="3.4.0"/>
+        <dependency conf="autopsy_core->*" org="net.java.dev.jna" name="jna-platform" rev="5.5.0"/>
         
         <!-- for file search -->
         <dependency conf="autopsy_core->*" org="com.github.lgooddatepicker" name="LGoodDatePicker" rev="10.3.1"/>
@@ -73,8 +72,5 @@
         <dependency conf="autopsy_core->default" org="com.googlecode.plist" name="dd-plist" rev="1.20"/>
         
         <exclude org="*" ext="*" type="javadoc"/>
-        <!-- conflict resolutions for multiple JAR versions -->
-        <conflict org="net.java.dev.jna" module="jna" rev="3.4.0"/>
-        <conflict org="net.java.dev.jna" module="platform" rev="3.4.0"/>
     </dependencies>
 </ivy-module>

CoreLibs/nbproject/project.properties

@@ -21,7 +21,6 @@ file.reference.dom4j-1.6.1.jar=release/modules/ext/dom4j-1.6.1.jar
 file.reference.geronimo-jms_1.1_spec-1.0.jar=release/modules/ext/geronimo-jms_1.1_spec-1.0.jar
 file.reference.gson-2.8.5.jar=release/modules/ext/gson-2.8.5.jar
 file.reference.gst1-java-core-1.0.0.jar=release\\modules\\ext\\gst1-java-core-1.0.0.jar
-file.reference.jna-3.4.0.jar=release/modules/ext/jna-3.4.0.jar
 file.reference.guava-19.0.jar=release/modules/ext/guava-19.0.jar
 file.reference.imageio-bmp-3.2.jar=release/modules/ext/imageio-bmp-3.2.jar
 file.reference.imageio-core-3.2.jar=release/modules/ext/imageio-core-3.2.jar
@@ -44,6 +43,8 @@ file.reference.jfxtras-common-8.0-r4.jar=release/modules/ext/jfxtras-common-8.0-
 file.reference.jfxtras-controls-8.0-r4.jar=release/modules/ext/jfxtras-controls-8.0-r4.jar
 file.reference.jfxtras-fxml-8.0-r4.jar=release/modules/ext/jfxtras-fxml-8.0-r4.jar
 file.reference.jna-3.4.0.jar=release/modules/ext/jna-3.4.0.jar
+file.reference.jna-5.5.0.jar=release\\modules\\ext\\jna-5.5.0.jar
+file.reference.jna-platform-5.5.0.jar=release\\modules\\ext\\jna-platform-5.5.0.jar
 file.reference.joda-time-2.4.jar=release/modules/ext/joda-time-2.4.jar
 file.reference.jsr305-1.3.9.jar=release/modules/ext/jsr305-1.3.9.jar
 file.reference.LGoodDatePicker-10.3.1.jar=release/modules/ext/LGoodDatePicker-10.3.1.jar
@@ -52,7 +53,6 @@ file.reference.logkit-1.0.1.jar=release/modules/ext/logkit-1.0.1.jar
 file.reference.mail-1.4.3.jar=release/modules/ext/mail-1.4.3.jar
 file.reference.opencv-248.jar=release/modules/ext/opencv-248.jar
 file.reference.openjfx-dialogs-1.0.2.jar=release/modules/ext/openjfx-dialogs-1.0.3.jar
-file.reference.platform-3.4.0.jar=release/modules/ext/platform-3.4.0.jar
 file.reference.poi-4.0.1.jar=release\\modules\\ext\\poi-4.0.1.jar
 file.reference.poi-excelant-4.0.1.jar=release\\modules\\ext\\poi-excelant-4.0.1.jar
 file.reference.poi-ooxml-4.0.1.jar=release\\modules\\ext\\poi-ooxml-4.0.1.jar

CoreLibs/nbproject/project.xml

@@ -806,10 +806,6 @@
                 <runtime-relative-path>ext/sigar-1.6.4.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/sigar-1.6.4.jar</binary-origin>
             </class-path-extension>
-            <class-path-extension>
-                <runtime-relative-path>ext/jna-3.4.0.jar</runtime-relative-path>
-                <binary-origin>release/modules/ext/jna-3.4.0.jar</binary-origin>
-            </class-path-extension>
             <class-path-extension>
                 <runtime-relative-path>ext/gson-2.8.5.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/gson-2.8.5.jar</binary-origin>
@@ -902,6 +898,10 @@
                 <runtime-relative-path>ext/commons-csv-1.4.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/commons-csv-1.4.jar</binary-origin>
             </class-path-extension>
+            <class-path-extension>
+                <runtime-relative-path>ext/jna-5.5.0.jar</runtime-relative-path>
+                <binary-origin>release/modules/ext/jna-5.5.0.jar</binary-origin>
+            </class-path-extension>
             <class-path-extension>
                 <runtime-relative-path>ext/imageio-sgi-3.2.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/imageio-sgi-3.2.jar</binary-origin>
@@ -946,10 +946,6 @@
                 <runtime-relative-path>ext/imageio-bmp-3.2.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/imageio-bmp-3.2.jar</binary-origin>
             </class-path-extension>
-            <class-path-extension>
-                <runtime-relative-path>ext/platform-3.4.0.jar</runtime-relative-path>
-                <binary-origin>release/modules/ext/platform-3.4.0.jar</binary-origin>
-            </class-path-extension>
             <class-path-extension>
                 <runtime-relative-path>ext/commons-lang-2.6.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/commons-lang-2.6.jar</binary-origin>
@@ -1018,6 +1014,10 @@
                 <runtime-relative-path>ext/dom4j-1.6.1.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/dom4j-1.6.1.jar</binary-origin>
             </class-path-extension>
+            <class-path-extension>
+                <runtime-relative-path>ext/jna-platform-5.5.0.jar</runtime-relative-path>
+                <binary-origin>release/modules/ext/jna-platform-5.5.0.jar</binary-origin>
+            </class-path-extension>
             <class-path-extension>
                 <runtime-relative-path>ext/imageio-metadata-3.2.jar</runtime-relative-path>
                 <binary-origin>release/modules/ext/imageio-metadata-3.2.jar</binary-origin>