BufferingSettings: define internal BufferingSettings API.

Test: compiles
Bug: 32524218
Change-Id: I9a95b2fdfa497179305e031aac69e5a987614dbb
diff --git a/media/libmedia/BufferingSettings.cpp b/media/libmedia/BufferingSettings.cpp
new file mode 100644
index 0000000..6dc4a53
--- /dev/null
+++ b/media/libmedia/BufferingSettings.cpp
@@ -0,0 +1,73 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "BufferingSettings"
+//#define LOG_NDEBUG 0
+
+#include <binder/Parcel.h>
+
+#include <media/BufferingSettings.h>
+
+namespace android {
+
+// static
+bool BufferingSettings::IsValidBufferingMode(int mode) {
+    return (mode >= BUFFERING_MODE_NONE && mode < BUFFERING_MODE_COUNT);
+}
+
+BufferingSettings::BufferingSettings()
+        : mInitialBufferingMode(BUFFERING_MODE_NONE),
+          mRebufferingMode(BUFFERING_MODE_NONE),
+          mInitialWatermarkMs(kNoWatermark),
+          mInitialWatermarkKB(kNoWatermark),
+          mRebufferingWatermarkLowMs(kNoWatermark),
+          mRebufferingWatermarkHighMs(kNoWatermark),
+          mRebufferingWatermarkLowKB(kNoWatermark),
+          mRebufferingWatermarkHighKB(kNoWatermark) { }
+
+status_t BufferingSettings::readFromParcel(const Parcel* parcel) {
+    if (parcel == nullptr) {
+        return BAD_VALUE;
+    }
+    mInitialBufferingMode = (BufferingMode)parcel->readInt32();
+    mRebufferingMode = (BufferingMode)parcel->readInt32();
+    mInitialWatermarkMs = parcel->readInt32();
+    mInitialWatermarkKB = parcel->readInt32();
+    mRebufferingWatermarkLowMs = parcel->readInt32();
+    mRebufferingWatermarkHighMs = parcel->readInt32();
+    mRebufferingWatermarkLowKB = parcel->readInt32();
+    mRebufferingWatermarkHighKB = parcel->readInt32();
+
+    return OK;
+}
+
+status_t BufferingSettings::writeToParcel(Parcel* parcel) const {
+    if (parcel == nullptr) {
+        return BAD_VALUE;
+    }
+    parcel->writeInt32(mInitialBufferingMode);
+    parcel->writeInt32(mRebufferingMode);
+    parcel->writeInt32(mInitialWatermarkMs);
+    parcel->writeInt32(mInitialWatermarkKB);
+    parcel->writeInt32(mRebufferingWatermarkLowMs);
+    parcel->writeInt32(mRebufferingWatermarkHighMs);
+    parcel->writeInt32(mRebufferingWatermarkLowKB);
+    parcel->writeInt32(mRebufferingWatermarkHighKB);
+
+    return OK;
+}
+
+} // namespace android