Camera2: Tests: Add CLI arguments for disabling forking and changing camera ID

Change-Id: I0adfda42e861d7e5a85801f7e0c3f0b3950b6e0e
diff --git a/tests/camera2/TestSettings.h b/tests/camera2/TestSettings.h
new file mode 100644
index 0000000..6164de5
--- /dev/null
+++ b/tests/camera2/TestSettings.h
@@ -0,0 +1,56 @@
+/*
+:qa
+ * 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.
+ */
+
+#ifndef __ANDROID_HAL_CAMERA2_TESTS_SETTINGS__
+#define __ANDROID_HAL_CAMERA2_TESTS_SETTINGS__
+
+namespace android {
+namespace camera2 {
+namespace tests {
+
+class TestSettings {
+
+public:
+    // --forking-disabled, false by default
+    static bool ForkingDisabled();
+
+    // reverse of --forking-disabled (not a flag), true by default
+    static bool ForkingEnabled();
+
+    // --device-id, 0 by default
+    static int DeviceId();
+
+    // returns false if usage should be printed and we should exit early
+    static bool ParseArgs(int argc, char* const argv[]);
+
+    // print usage/help list of commands (non-gtest)
+    static void PrintUsage();
+
+private:
+    TestSettings();
+    ~TestSettings();
+
+    static bool mForkingDisabled;
+    static int  mDeviceId;
+    static char* const* mArgv;
+};
+
+}
+}
+}
+
+#endif