1 files changed, 68 insertions, 0 deletions
diff --git a/src/com/android/camera/Thumbnail.java b/src/com/android/camera/Thumbnail.java
new file mode 100644
index 000000000..5f8483d6c
--- /dev/null
+++ b/src/com/android/camera/Thumbnail.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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 com.android.camera;
+
+import android.graphics.Bitmap;
+import android.media.MediaMetadataRetriever;
+
+import java.io.FileDescriptor;
+
+public class Thumbnail {
+    public static Bitmap createVideoThumbnailBitmap(FileDescriptor fd, int targetWidth) {
+        return createVideoThumbnailBitmap(null, fd, targetWidth);
+    }
+
+    public static Bitmap createVideoThumbnailBitmap(String filePath, int targetWidth) {
+        return createVideoThumbnailBitmap(filePath, null, targetWidth);
+    }
+
+    private static Bitmap createVideoThumbnailBitmap(String filePath, FileDescriptor fd,
+            int targetWidth) {
+        Bitmap bitmap = null;
+        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
+        try {
+            if (filePath != null) {
+                retriever.setDataSource(filePath);
+            } else {
+                retriever.setDataSource(fd);
+            }
+            bitmap = retriever.getFrameAtTime(-1);
+        } catch (IllegalArgumentException ex) {
+            // Assume this is a corrupt video file
+        } catch (RuntimeException ex) {
+            // Assume this is a corrupt video file.
+        } finally {
+            try {
+                retriever.release();
+            } catch (RuntimeException ex) {
+                // Ignore failures while cleaning up.
+            }
+        }
+        if (bitmap == null) return null;
+
+        // Scale down the bitmap if it is bigger than we need.
+        int width = bitmap.getWidth();
+        int height = bitmap.getHeight();
+        if (width > targetWidth) {
+            float scale = (float) targetWidth / width;
+            int w = Math.round(scale * width);
+            int h = Math.round(scale * height);
+            bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
+        }
+        return bitmap;
+    }
+}