Add a configurable version of the policy engine based on PFW

This patch adds a configurable version of the policy engine
based on the parameter framework.
This configurable engine shall be activated with a flag
USE_CONFIGURABLE_AUDIO_POLICY within BoardConfig.mk

This patch provides the generic configuration as an example.
This configuration provides the same user experience as the default
policy engine.

Change-Id: Ic8217333ae370b89bfdd2ad11320c5f14ea4da34
Signed-off-by: François Gaffie <francois.gaffie@intel.com>

2 files changed, 103 insertions, 0 deletions

diff --git a/services/audiopolicy/engineconfigurable/include/AudioPolicyEngineInstance.h b/services/audiopolicy/engineconfigurable/include/AudioPolicyEngineInstance.h
new file mode 100755
index 0000000..6c4be2c
--- /dev/null
+++ b/services/audiopolicy/engineconfigurable/include/AudioPolicyEngineInstance.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#pragma once
+
+class AudioPolicyManagerInterface;
+class AudioPolicyPluginInterface;
+
+namespace android
+{
+namespace audio_policy
+{
+
+class Engine;
+
+class EngineInstance
+{
+protected:
+    EngineInstance();
+
+public:
+    virtual ~EngineInstance();
+
+    /**
+     * Get Audio Policy Engine instance.
+     *
+     * @return pointer to Route Manager Instance object.
+     */
+    static EngineInstance *getInstance();
+
+    /**
+     * Interface query.
+     * The first client of an interface of the policy engine will start the singleton.
+     *
+     * @tparam RequestedInterface: interface that the client is wishing to retrieve.
+     *
+     * @return interface handle.
+     */
+    template <class RequestedInterface>
+    RequestedInterface *queryInterface() const;
+
+protected:
+    /**
+     * Get Audio Policy Engine instance.
+     *
+     * @return Audio Policy Engine singleton.
+     */
+    Engine *getEngine() const;
+
+private:
+    /* Copy facilities are put private to disable copy. */
+    EngineInstance(const EngineInstance &object);
+    EngineInstance &operator=(const EngineInstance &object);
+};
+
+/**
+ * Limit template instantation to supported type interfaces.
+ * Compile time error will claim if invalid interface is requested.
+ */
+template <>
+AudioPolicyManagerInterface *EngineInstance::queryInterface() const;
+
+template <>
+AudioPolicyPluginInterface *EngineInstance::queryInterface() const;
+
+}; // namespace audio_policy
+
+}; // namespace android
diff --git a/services/audiopolicy/engineconfigurable/include/EngineDefinition.h b/services/audiopolicy/engineconfigurable/include/EngineDefinition.h
new file mode 100755
index 0000000..54d8db5
--- /dev/null
+++ b/services/audiopolicy/engineconfigurable/include/EngineDefinition.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#pragma once
+
+#include <Volume.h>
+#include <vector>
+
+typedef std::vector<VolumeCurvePoint> VolumeCurvePoints;