1 files changed, 106 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java b/src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java
new file mode 100644
index 000000000..30868c22b
--- /dev/null
+++ b/src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2013 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.gallery3d.ingest.data;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.mtp.MtpDevice;
+import android.mtp.MtpObjectInfo;
+import android.util.DisplayMetrics;
+import android.view.WindowManager;
+
+import com.android.camera.Exif;
+import com.android.photos.data.GalleryBitmapPool;
+
+public class MtpBitmapFetch {
+    private static int sMaxSize = 0;
+
+    public static void recycleThumbnail(Bitmap b) {
+        if (b != null) {
+            GalleryBitmapPool.getInstance().put(b);
+        }
+    }
+
+    public static Bitmap getThumbnail(MtpDevice device, MtpObjectInfo info) {
+        byte[] imageBytes = device.getThumbnail(info.getObjectHandle());
+        if (imageBytes == null) {
+            return null;
+        }
+        BitmapFactory.Options o = new BitmapFactory.Options();
+        o.inJustDecodeBounds = true;
+        BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o);
+        if (o.outWidth == 0 || o.outHeight == 0) {
+            return null;
+        }
+        o.inBitmap = GalleryBitmapPool.getInstance().get(o.outWidth, o.outHeight);
+        o.inMutable = true;
+        o.inJustDecodeBounds = false;
+        o.inSampleSize = 1;
+        try {
+            return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o);
+        } catch (IllegalArgumentException e) {
+            // BitmapFactory throws an exception rather than returning null
+            // when image decoding fails and an existing bitmap was supplied
+            // for recycling, even if the failure was not caused by the use
+            // of that bitmap.
+            return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
+        }
+    }
+
+    public static BitmapWithMetadata getFullsize(MtpDevice device, MtpObjectInfo info) {
+        return getFullsize(device, info, sMaxSize);
+    }
+
+    public static BitmapWithMetadata getFullsize(MtpDevice device, MtpObjectInfo info, int maxSide) {
+        byte[] imageBytes = device.getObject(info.getObjectHandle(), info.getCompressedSize());
+        if (imageBytes == null) {
+            return null;
+        }
+        Bitmap created;
+        if (maxSide > 0) {
+            BitmapFactory.Options o = new BitmapFactory.Options();
+            o.inJustDecodeBounds = true;
+            BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o);
+            int w = o.outWidth;
+            int h = o.outHeight;
+            int comp = Math.max(h, w);
+            int sampleSize = 1;
+            while ((comp >> 1) >= maxSide) {
+                comp = comp >> 1;
+                sampleSize++;
+            }
+            o.inSampleSize = sampleSize;
+            o.inJustDecodeBounds = false;
+            created = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o);
+        } else {
+            created = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
+        }
+        if (created == null) {
+            return null;
+        }
+
+        return new BitmapWithMetadata(created, Exif.getOrientation(imageBytes));
+    }
+
+    public static void configureForContext(Context context) {
+        DisplayMetrics metrics = new DisplayMetrics();
+        WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
+        wm.getDefaultDisplay().getMetrics(metrics);
+        sMaxSize = Math.max(metrics.heightPixels, metrics.widthPixels);
+    }
+}