init libxcam source code
diff --git a/xcore/x3a_analyzer_simple.h b/xcore/x3a_analyzer_simple.h
new file mode 100644
index 0000000..91fd7bb
--- /dev/null
+++ b/xcore/x3a_analyzer_simple.h
@@ -0,0 +1,75 @@
+/*
+ * x3a_analyzer_simple.h - a simple 3a analyzer
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * 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.
+ *
+ * Author: Wind Yuan <feng.yuan@intel.com>
+ */
+
+#ifndef XCAM_3A_ANALYZER_SIMPLE_H
+#define XCAM_3A_ANALYZER_SIMPLE_H
+
+#include "xcam_common.h"
+#include "xcam_defs.h"
+#include "xcam_utils.h"
+#include "x3a_analyzer.h"
+#include <linux/atomisp.h>
+
+namespace XCam {
+
+class X3aAnalyzerSimple
+ : public X3aAnalyzer
+{
+public:
+ explicit X3aAnalyzerSimple ();
+ ~X3aAnalyzerSimple ();
+
+private:
+
+ XCAM_DEAD_COPY (X3aAnalyzerSimple);
+
+protected:
+ virtual SmartPtr<AeHandler> create_ae_handler ();
+ virtual SmartPtr<AwbHandler> create_awb_handler ();
+ virtual SmartPtr<AfHandler> create_af_handler ();
+ virtual SmartPtr<CommonHandler> create_common_handler ();
+
+ virtual XCamReturn internal_init (uint32_t width, uint32_t height) {
+ XCAM_UNUSED (width);
+ XCAM_UNUSED (height);
+ return XCAM_RETURN_NO_ERROR;
+ }
+ virtual XCamReturn internal_deinit () {
+ _is_ae_started = false;
+ return XCAM_RETURN_NO_ERROR;
+ }
+ virtual XCamReturn configure_3a ();
+ virtual XCamReturn pre_3a_analyze (SmartPtr<X3aIspStatistics> &stats);
+ virtual XCamReturn post_3a_analyze (X3aResultList &results);
+
+public:
+ XCamReturn analyze_ae (X3aResultList &output);
+ XCamReturn analyze_awb (X3aResultList &output);
+ XCamReturn analyze_af (X3aResultList &output);
+
+private:
+ SmartPtr<X3aIspStatistics> _current_stats;
+ double _last_target_exposure;
+ bool _is_ae_started;
+};
+
+};
+#endif //XCAM_3A_ANALYZER_SIMPLE_H
+