Added a callback interface to the generatePreview method.

Change-Id: I7ba678aba47f232e1c320bb36decf59f80f3755d

3 files changed, 31 insertions, 3 deletions

diff --git a/media/java/android/media/videoeditor/VideoEditor.java b/media/java/android/media/videoeditor/VideoEditor.java
index 64d3229..37bb661 100755
--- a/media/java/android/media/videoeditor/VideoEditor.java
+++ b/media/java/android/media/videoeditor/VideoEditor.java
@@ -98,6 +98,31 @@ public interface VideoEditor {
     }

 

     /**

+     * This listener interface is used by the VideoEditor to emit export status

+     * notifications.

+     * {@link #generatePreview(MediaProcessingProgressListener listener)}

+     */

+    public interface MediaProcessingProgressListener {

+        // Values used for the action parameter

+        public static final int ACTION_ENCODE = 1;

+        public static final int ACTION_DECODE = 2;

+

+        /**

+         * This method notifies the listener of the progress status of

+         * processing a media object such as a Transition, AudioTrack or a

+         * media image item (when Ken Burns effect is applied).

+         * This method may be called maximum 100 times for one operation.

+         *

+         * @param object The object that is being processed such as a

+         *          Transition or AudioTrack

+         * @param action The type of processing being performed

+         * @param progress The progress in %. At the beginning of the operation,

+         *          this value is set to 0; at the end, the value is set to 100.

+         */

+        public void onProgress(Object item, int action, int progress);

+    }

+

+    /**

      * @return The path where the VideoEditor stores all files related to the

      * project

      */

@@ -496,8 +521,11 @@ public interface VideoEditor {
      * This method must be called after the aspect ratio of the project changes

      * and before startPreview is called. Note that this method may block for

      * an extensive period of time.

+     *

+     * @param listener The listener interface which will be used to notify

+     *  the caller of the progress of each storyboard item being processed.

      */

-    public void generatePreview();

+    public void generatePreview(MediaProcessingProgressListener listener);

 

     /**

      * Start the preview of all the storyboard items applied on all MediaItems

diff --git a/media/java/android/media/videoeditor/VideoEditorFactory.java b/media/java/android/media/videoeditor/VideoEditorFactory.java
index 41eed16..5c243ed 100755
--- a/media/java/android/media/videoeditor/VideoEditorFactory.java
+++ b/media/java/android/media/videoeditor/VideoEditorFactory.java
@@ -115,7 +115,7 @@ public class VideoEditorFactory {
 
         final VideoEditor videoEditor = (VideoEditor)ct.newInstance(arglist);
         if (generatePreview) {
-            videoEditor.generatePreview();
+            videoEditor.generatePreview(null);
         }
         return videoEditor;
     }
diff --git a/media/java/android/media/videoeditor/VideoEditorTestImpl.java b/media/java/android/media/videoeditor/VideoEditorTestImpl.java
index ca896c3..50e4aaf 100644
--- a/media/java/android/media/videoeditor/VideoEditorTestImpl.java
+++ b/media/java/android/media/videoeditor/VideoEditorTestImpl.java
@@ -1055,7 +1055,7 @@ public class VideoEditorTestImpl implements VideoEditor {
     /*
      * {@inheritDoc}
      */
-    public void generatePreview() {
+    public void generatePreview(MediaProcessingProgressListener listener) {
         // Generate all the needed transitions
         for (Transition transition : mTransitions) {
             if (!transition.isGenerated()) {