Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I9aa980d7569247d6b2ca78f5dcb4502e1eaadb8a

src/com/android/messaging/datamodel/media/UriImageRequest.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 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.messaging.datamodel.media;
+
+import android.content.Context;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+/**
+ * Serves local content URI based image requests.
+ */
+public class UriImageRequest<D extends UriImageRequestDescriptor> extends ImageRequest<D> {
+    public UriImageRequest(final Context context, final D descriptor) {
+        super(context, descriptor);
+    }
+
+    @Override
+    protected InputStream getInputStreamForResource() throws FileNotFoundException {
+        return mContext.getContentResolver().openInputStream(mDescriptor.uri);
+    }
+
+    @Override
+    protected ImageResource loadMediaInternal(List<MediaRequest<ImageResource>> chainedTasks)
+            throws IOException {
+        final ImageResource resource = super.loadMediaInternal(chainedTasks);
+        // Check if the caller asked for compression. If so, chain an encoding task if possible.
+        if (mDescriptor.allowCompression && chainedTasks != null) {
+            @SuppressWarnings("unchecked")
+            final MediaRequest<ImageResource> chainedTask = (MediaRequest<ImageResource>)
+                    resource.getMediaEncodingRequest(this);
+            if (chainedTask != null) {
+                chainedTasks.add(chainedTask);
+                // Don't cache decoded image resource since we'll perform compression and cache
+                // the compressed resource.
+                if (resource instanceof DecodedImageResource) {
+                    ((DecodedImageResource) resource).setCacheable(false);
+                }
+            }
+        }
+        return resource;
+    }
+}