cas: add CAS hal
Add CAS hal definitions and default service implementation.
bug: 22804304
Change-Id: I0a89608fe75c5f3c5e6888f9b771305742760707
diff --git a/cas/1.0/default/SharedLibrary.cpp b/cas/1.0/default/SharedLibrary.cpp
new file mode 100644
index 0000000..9c7f385
--- /dev/null
+++ b/cas/1.0/default/SharedLibrary.cpp
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "android.hardware.cas@1.0-SharedLibrary"
+
+#include <dlfcn.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include "SharedLibrary.h"
+#include <utils/Log.h>
+
+namespace android {
+namespace hardware {
+namespace cas {
+namespace V1_0 {
+namespace implementation {
+
+SharedLibrary::SharedLibrary(const String8 &path) {
+ mLibHandle = dlopen(path.string(), RTLD_NOW);
+}
+
+SharedLibrary::~SharedLibrary() {
+ if (mLibHandle != NULL) {
+ dlclose(mLibHandle);
+ mLibHandle = NULL;
+ }
+}
+
+bool SharedLibrary::operator!() const {
+ return mLibHandle == NULL;
+}
+
+void *SharedLibrary::lookup(const char *symbol) const {
+ if (!mLibHandle) {
+ return NULL;
+ }
+ // Clear last error before we load the symbol again,
+ // in case the caller didn't retrieve it.
+ (void)dlerror();
+ return dlsym(mLibHandle, symbol);
+}
+
+const char *SharedLibrary::lastError() const {
+ const char *error = dlerror();
+ return error ? error : "No errors or unknown error";
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace cas
+} // namespace hardware
+} // namespace android