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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H
     18 #define ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H
     19 
     20 #include <media/audiohal/DeviceHalInterface.h>
     21 #include <utils/Errors.h>
     22 #include <utils/RefBase.h>
     23 
     24 namespace android {
     25 
     26 class DevicesFactoryHalInterface : public RefBase
     27 {
     28   public:
     29     // Opens a device with the specified name. To close the device, it is
     30     // necessary to release references to the returned object.
     31     virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device) = 0;
     32 
     33     static sp<DevicesFactoryHalInterface> create();
     34 
     35   protected:
     36     // Subclasses can not be constructed directly by clients.
     37     DevicesFactoryHalInterface() {}
     38 
     39     virtual ~DevicesFactoryHalInterface() {}
     40 };
     41 
     42 } // namespace android
     43 
     44 #endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H
     45