cas: add CAS hal

Add CAS hal definitions and default service implementation.

bug: 22804304

Change-Id: I0a89608fe75c5f3c5e6888f9b771305742760707
diff --git a/cas/1.0/default/MediaCasService.h b/cas/1.0/default/MediaCasService.h
new file mode 100644
index 0000000..77ddac6
--- /dev/null
+++ b/cas/1.0/default/MediaCasService.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_CAS_V1_0_MEDIA_CAS_SERVICE_H_
+#define ANDROID_HARDWARE_CAS_V1_0_MEDIA_CAS_SERVICE_H_
+
+#include <android/hardware/cas/1.0/IMediaCasService.h>
+
+#include "FactoryLoader.h"
+
+namespace android {
+struct CasFactory;
+struct DescramblerFactory;
+namespace hardware {
+namespace cas {
+namespace V1_0 {
+namespace implementation {
+
+class MediaCasService : public IMediaCasService {
+public:
+    MediaCasService();
+
+    virtual Return<void> enumeratePlugins(
+            enumeratePlugins_cb _hidl_cb) override;
+
+    virtual Return<bool> isSystemIdSupported(
+            int32_t CA_system_id) override;
+
+    virtual Return<sp<ICas>> createPlugin(
+            int32_t CA_system_id, const sp<ICasListener>& listener) override;
+
+    virtual Return<bool> isDescramblerSupported(
+            int32_t CA_system_id) override;
+
+    virtual Return<sp<IDescramblerBase>> createDescrambler(
+            int32_t CA_system_id) override;
+
+private:
+    FactoryLoader<CasFactory> mCasLoader;
+    FactoryLoader<DescramblerFactory> mDescramblerLoader;
+
+    virtual ~MediaCasService();
+};
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace cas
+} // namespace hardware
+} // namespace android
+
+#endif // ANDROID_HARDWARE_CAS_V1_0_MEDIA_CAS_SERVICE_H_