Provisional support for secure decryption of media streams.

Change-Id: Ib3982a9c960bfdb0cb7e1b174440b141b194cfbe
diff --git a/media/libmediaplayerservice/Crypto.cpp b/media/libmediaplayerservice/Crypto.cpp
new file mode 100644
index 0000000..e02035f
--- /dev/null
+++ b/media/libmediaplayerservice/Crypto.cpp
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2012 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_NDEBUG 0
+#define LOG_TAG "Crypto"
+#include <utils/Log.h>
+
+#include "Crypto.h"
+
+#include <media/stagefright/MediaErrors.h>
+
+namespace android {
+
+Crypto::Crypto() {
+}
+
+Crypto::~Crypto() {
+}
+
+status_t Crypto::initialize() {
+    return ERROR_UNSUPPORTED;
+}
+
+status_t Crypto::terminate() {
+    return ERROR_UNSUPPORTED;
+}
+
+status_t Crypto::setEntitlementKey(
+        const void *key, size_t keyLength) {
+    return ERROR_UNSUPPORTED;
+}
+
+status_t Crypto::setEntitlementControlMessage(
+        const void *msg, size_t msgLength) {
+    return ERROR_UNSUPPORTED;
+}
+
+ssize_t Crypto::decryptVideo(
+        const void *iv, size_t ivLength,
+        const void *srcData, size_t srcDataSize,
+        void *dstData, size_t dstDataOffset) {
+    return ERROR_UNSUPPORTED;
+}
+
+ssize_t Crypto::decryptAudio(
+        const void *iv, size_t ivLength,
+        const void *srcData, size_t srcDataSize,
+        void *dstData, size_t dstDataSize) {
+    return ERROR_UNSUPPORTED;
+}
+
+}  // namespace android