1 files changed, 49 insertions, 0 deletions
diff --git a/src/com/android/messaging/datamodel/AudioBoundCursorLoader.java b/src/com/android/messaging/datamodel/AudioBoundCursorLoader.java
new file mode 100644
index 0000000..406432b
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+++ b/src/com/android/messaging/datamodel/AudioBoundCursorLoader.java
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+/*
+ * Copyright (C) 2016 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;
+
+import android.content.Context;
+import android.net.Uri;
+import android.provider.MediaStore.Files;
+import android.provider.MediaStore.Files.FileColumns;
+import android.provider.MediaStore.Images.Media;
+import com.android.messaging.datamodel.data.AudioListItemData;
+import com.android.messaging.datamodel.data.MessagePartData;
+import com.google.common.base.Joiner;
+
+/**
+ * A BoundCursorLoader that reads local media on the device.
+ */
+public class AudioBoundCursorLoader extends BoundCursorLoader {
+    public static final String MEDIA_SCANNER_VOLUME_EXTERNAL = "external";
+    private static final Uri STORAGE_URI = Files.getContentUri(MEDIA_SCANNER_VOLUME_EXTERNAL);
+    private static final String SORT_ORDER = Media.DATE_MODIFIED + " DESC";
+    private static final String TAG = AudioBoundCursorLoader.class.getSimpleName();
+    private static final String AUDIO_SELECTION = createSelection(
+            MessagePartData.ACCEPTABLE_AUDIO_TYPES,
+            new Integer[] {FileColumns.MEDIA_TYPE_AUDIO});
+
+    public AudioBoundCursorLoader(final String bindingId, final Context context) {
+        super(bindingId, context, STORAGE_URI, AudioListItemData.AUDIO_PROJECTION,
+                AUDIO_SELECTION, null, SORT_ORDER);
+    }
+
+    private static String createSelection(final String[] mimeTypes, Integer[] mediaTypes) {
+        return Media.MIME_TYPE + " IN ('" + Joiner.on("','").join(mimeTypes) + "') AND "
+                + FileColumns.MEDIA_TYPE + " IN (" + Joiner.on(',').join(mediaTypes) + ")";
+    }
+}