Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1

src/com/android/messaging/util/MediaMetadataRetrieverWrapper.java

@@ -0,0 +1,81 @@
+/*
+ * 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.util;
+
+import android.content.ContentResolver;
+import android.content.res.AssetFileDescriptor;
+import android.graphics.Bitmap;
+import android.media.MediaMetadataRetriever;
+import android.net.Uri;
+import android.text.TextUtils;
+
+import com.android.messaging.Factory;
+
+import java.io.IOException;
+
+/**
+ * Convenience wrapper for {@link MediaMetadataRetriever} to help with its eccentric error handling.
+ */
+public class MediaMetadataRetrieverWrapper {
+    private final MediaMetadataRetriever mRetriever = new MediaMetadataRetriever();
+
+    public MediaMetadataRetrieverWrapper() {
+    }
+
+    public void setDataSource(Uri uri) throws IOException {
+        ContentResolver resolver = Factory.get().getApplicationContext().getContentResolver();
+        AssetFileDescriptor fd = resolver.openAssetFileDescriptor(uri, "r");
+        if (fd == null) {
+            throw new IOException("openAssetFileDescriptor returned null for " + uri);
+        }
+        try {
+            mRetriever.setDataSource(fd.getFileDescriptor());
+        } catch (RuntimeException e) {
+            release();
+            throw new IOException(e);
+        } finally {
+            fd.close();
+        }
+    }
+
+    public int extractInteger(final int key, final int defaultValue) {
+        final String s = mRetriever.extractMetadata(key);
+        if (TextUtils.isEmpty(s)) {
+            return defaultValue;
+        }
+        return Integer.parseInt(s);
+    }
+
+    public String extractMetadata(final int key) {
+        return mRetriever.extractMetadata(key);
+    }
+
+    public Bitmap getFrameAtTime() {
+        return mRetriever.getFrameAtTime();
+    }
+
+    public Bitmap getFrameAtTime(final long timeUs) {
+        return mRetriever.getFrameAtTime(timeUs);
+    }
+
+    public void release() {
+        try {
+            mRetriever.release();
+        } catch (RuntimeException e) {
+            LogUtil.e(LogUtil.BUGLE_TAG, "MediaMetadataRetriever.release failed", e);
+        }
+    }
+}