audiopolicy: engine: Add ProductStrategy common code

-Adds new Engine APIs for Product Strategy management
-Adds a common engine code to handle product strategies
-Adds a parsing configuration library to feed the strategies
-Prepare both engine for the switch

Test: make
Change-Id: I00f57ece798893bc6f9aa9ed54a3e5237e8d5cf1
diff --git a/services/audiopolicy/engineconfigurable/src/Engine.h b/services/audiopolicy/engineconfigurable/src/Engine.h
index ba4f889..aebf27d 100644
--- a/services/audiopolicy/engineconfigurable/src/Engine.h
+++ b/services/audiopolicy/engineconfigurable/src/Engine.h
@@ -16,7 +16,7 @@
 
 #pragma once
 
-
+#include "EngineBase.h"
 #include <AudioPolicyManagerInterface.h>
 #include <AudioPolicyPluginInterface.h>
 #include "Collection.h"
@@ -29,7 +29,7 @@
 class ParameterManagerWrapper;
 class VolumeProfile;
 
-class Engine
+class Engine : public EngineBase, AudioPolicyPluginInterface
 {
 public:
     Engine();
@@ -38,129 +38,93 @@
     template <class RequestedInterface>
     RequestedInterface *queryInterface();
 
-private:
-    /// Interface members
-    class ManagerInterfaceImpl : public AudioPolicyManagerInterface
+    ///
+    /// from EngineBase
+    ///
+    android::status_t initCheck() override;
+
+    audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const override
     {
-    public:
-        ManagerInterfaceImpl(Engine *policyEngine)
-            : mPolicyEngine(policyEngine) {}
+        return getPropertyForKey<audio_devices_t, audio_source_t>(inputSource);
+    }
 
-        virtual android::status_t initCheck()
-        {
-            return mPolicyEngine->initCheck();
-        }
-        virtual void setObserver(AudioPolicyManagerObserver *observer)
-        {
-            mPolicyEngine->setObserver(observer);
-        }
-        virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const
-        {
-            return mPolicyEngine->getPropertyForKey<audio_devices_t, audio_source_t>(inputSource);
-        }
-        virtual audio_devices_t getDeviceForStrategy(routing_strategy stategy) const;
-        virtual routing_strategy getStrategyForStream(audio_stream_type_t stream)
-        {
-            return mPolicyEngine->getPropertyForKey<routing_strategy, audio_stream_type_t>(stream);
-        }
-        virtual routing_strategy getStrategyForUsage(audio_usage_t usage);
-        virtual status_t setPhoneState(audio_mode_t mode)
-        {
-            return mPolicyEngine->setPhoneState(mode);
-        }
-        virtual audio_mode_t getPhoneState() const
-        {
-            return mPolicyEngine->getPhoneState();
-        }
-        virtual status_t setForceUse(audio_policy_force_use_t usage,
-                                              audio_policy_forced_cfg_t config)
-        {
-            return mPolicyEngine->setForceUse(usage, config);
-        }
-        virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const
-        {
-            return mPolicyEngine->getForceUse(usage);
-        }
-        virtual android::status_t setDeviceConnectionState(const sp<DeviceDescriptor> devDesc,
-                                                           audio_policy_dev_state_t state)
-        {
-            return mPolicyEngine->setDeviceConnectionState(devDesc, state);
-        }
+    audio_devices_t getDeviceForStrategy(routing_strategy stategy) const override;
 
-    private:
-        Engine *mPolicyEngine;
-    } mManagerInterface;
-
-    class PluginInterfaceImpl : public AudioPolicyPluginInterface
+    routing_strategy getStrategyForStream(audio_stream_type_t stream) override
     {
-    public:
-        PluginInterfaceImpl(Engine *policyEngine)
-            : mPolicyEngine(policyEngine) {}
+        return getPropertyForKey<routing_strategy, audio_stream_type_t>(stream);
+    }
 
-        virtual status_t addStrategy(const std::string &name, routing_strategy strategy)
-        {
-            return mPolicyEngine->add<routing_strategy>(name, strategy);
-        }
-        virtual status_t addStream(const std::string &name, audio_stream_type_t stream)
-        {
-            return mPolicyEngine->add<audio_stream_type_t>(name, stream);
-        }
-        virtual status_t addUsage(const std::string &name, audio_usage_t usage)
-        {
-            return mPolicyEngine->add<audio_usage_t>(name, usage);
-        }
-        virtual status_t addInputSource(const std::string &name, audio_source_t source)
-        {
-            return mPolicyEngine->add<audio_source_t>(name, source);
-        }
-        virtual bool setDeviceForStrategy(const routing_strategy &strategy, audio_devices_t devices)
-        {
-            return mPolicyEngine->setPropertyForKey<audio_devices_t, routing_strategy>(devices,
-                                                                                       strategy);
-        }
-        virtual bool setStrategyForStream(const audio_stream_type_t &stream,
-                                          routing_strategy strategy)
-        {
-            return mPolicyEngine->setPropertyForKey<routing_strategy, audio_stream_type_t>(strategy,
-                                                                                           stream);
-        }
-        virtual bool setVolumeProfileForStream(const audio_stream_type_t &stream,
-                                               const audio_stream_type_t &volumeProfile);
+    routing_strategy getStrategyForUsage(audio_usage_t usage) override;
 
-        virtual bool setStrategyForUsage(const audio_usage_t &usage, routing_strategy strategy)
-        {
-            return mPolicyEngine->setPropertyForKey<routing_strategy, audio_usage_t>(strategy,
-                                                                                     usage);
-        }
-        virtual bool setDeviceForInputSource(const audio_source_t &inputSource,
-                                             audio_devices_t device)
-        {
-            return mPolicyEngine->setPropertyForKey<audio_devices_t, audio_source_t>(device,
-                                                                                     inputSource);
-        }
+    status_t setPhoneState(audio_mode_t mode) override;
 
-    private:
-        Engine *mPolicyEngine;
-    } mPluginInterface;
+    audio_mode_t getPhoneState() const override;
+
+    status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) override;
+
+    audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const override;
+
+    android::status_t setDeviceConnectionState(const sp<DeviceDescriptor> devDesc,
+                                               audio_policy_dev_state_t state) override;
+
+    DeviceVector getOutputDevicesForAttributes(const audio_attributes_t &attr,
+                                               const sp<DeviceDescriptor> &preferedDevice = nullptr,
+                                               bool fromCache = false) const override;
+
+    DeviceVector getOutputDevicesForStream(audio_stream_type_t stream,
+                                           bool fromCache = false) const override;
+
+    sp<DeviceDescriptor> getInputDeviceForAttributes(
+            const audio_attributes_t &attr, AudioMix **mix = nullptr) const override;
+
+    void updateDeviceSelectionCache() override;
+
+    ///
+    /// from AudioPolicyPluginInterface
+    ///
+    status_t addStrategy(const std::string &name, routing_strategy strategy) override
+    {
+        return add<routing_strategy>(name, strategy);
+    }
+    status_t addStream(const std::string &name, audio_stream_type_t stream) override
+    {
+        return add<audio_stream_type_t>(name, stream);
+    }
+    status_t addUsage(const std::string &name, audio_usage_t usage) override
+    {
+        return add<audio_usage_t>(name, usage);
+    }
+    status_t addInputSource(const std::string &name, audio_source_t source) override
+    {
+        return add<audio_source_t>(name, source);
+    }
+    bool setDeviceForStrategy(const routing_strategy &strategy, audio_devices_t devices) override
+    {
+        return setPropertyForKey<audio_devices_t, routing_strategy>(devices, strategy);
+    }
+    bool setStrategyForStream(const audio_stream_type_t &stream,
+                              routing_strategy strategy) override
+    {
+        return setPropertyForKey<routing_strategy, audio_stream_type_t>(strategy, stream);
+    }
+    bool setVolumeProfileForStream(const audio_stream_type_t &stream,
+                                   const audio_stream_type_t &volumeProfile) override;
+
+    bool setStrategyForUsage(const audio_usage_t &usage, routing_strategy strategy) override
+    {
+        return setPropertyForKey<routing_strategy, audio_usage_t>(strategy, usage);
+    }
+    bool setDeviceForInputSource(const audio_source_t &inputSource, audio_devices_t device) override
+    {
+        return setPropertyForKey<audio_devices_t, audio_source_t>(device, inputSource);
+    }
 
 private:
     /* Copy facilities are put private to disable copy. */
     Engine(const Engine &object);
     Engine &operator=(const Engine &object);
 
-    void setObserver(AudioPolicyManagerObserver *observer);
-
-    bool setVolumeProfileForStream(const audio_stream_type_t &stream,
-                                   device_category deviceCategory,
-                                   const VolumeCurvePoints &points);
-
-    status_t initCheck();
-    status_t setPhoneState(audio_mode_t mode);
-    audio_mode_t getPhoneState() const;
-    status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
-    audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const;
-    status_t setDeviceConnectionState(const sp<DeviceDescriptor> devDesc,
-                                      audio_policy_dev_state_t state);
     StrategyCollection mStrategyCollection; /**< Strategies indexed by their enum id. */
     StreamCollection mStreamCollection; /**< Streams indexed by their enum id.  */
     UsageCollection mUsageCollection; /**< Usages indexed by their enum id. */
@@ -184,12 +148,16 @@
     template <typename Property, typename Key>
     bool setPropertyForKey(const Property &property, const Key &key);
 
+    status_t loadAudioPolicyEngineConfig();
+
+    DeviceVector getDevicesForProductStrategy(product_strategy_t strategy) const;
+
     /**
      * Policy Parameter Manager hidden through a wrapper.
      */
     ParameterManagerWrapper *mPolicyParameterMgr;
 
-    AudioPolicyManagerObserver *mApmObserver;
+    DeviceStrategyMap mDevicesForStrategies;
 };
 
 } // namespace audio_policy