136 lines
4.5 KiB
C
136 lines
4.5 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2005 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_IINTERFACE_H
|
||
|
|
#define ANDROID_IINTERFACE_H
|
||
|
|
|
||
|
|
#include <utils/Binder.h>
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
|
||
|
|
class IInterface : public virtual RefBase
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
sp<IBinder> asBinder();
|
||
|
|
sp<const IBinder> asBinder() const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual IBinder* onAsBinder() = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
inline sp<INTERFACE> interface_cast(const sp<IBinder>& obj)
|
||
|
|
{
|
||
|
|
return INTERFACE::asInterface(obj);
|
||
|
|
}
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
class BnInterface : public INTERFACE, public BBinder
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
virtual sp<IInterface> queryLocalInterface(const String16& _descriptor);
|
||
|
|
virtual String16 getInterfaceDescriptor() const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual IBinder* onAsBinder();
|
||
|
|
};
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
class BpInterface : public INTERFACE, public BpRefBase
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
BpInterface(const sp<IBinder>& remote);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual IBinder* onAsBinder();
|
||
|
|
};
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
|
||
|
|
#define DECLARE_META_INTERFACE(INTERFACE) \
|
||
|
|
static const String16 descriptor; \
|
||
|
|
static sp<I##INTERFACE> asInterface(const sp<IBinder>& obj); \
|
||
|
|
virtual String16 getInterfaceDescriptor() const; \
|
||
|
|
|
||
|
|
#define IMPLEMENT_META_INTERFACE(INTERFACE, NAME) \
|
||
|
|
const String16 I##INTERFACE::descriptor(NAME); \
|
||
|
|
String16 I##INTERFACE::getInterfaceDescriptor() const { \
|
||
|
|
return I##INTERFACE::descriptor; \
|
||
|
|
} \
|
||
|
|
sp<I##INTERFACE> I##INTERFACE::asInterface(const sp<IBinder>& obj) \
|
||
|
|
{ \
|
||
|
|
sp<I##INTERFACE> intr; \
|
||
|
|
if (obj != NULL) { \
|
||
|
|
intr = static_cast<I##INTERFACE*>( \
|
||
|
|
obj->queryLocalInterface( \
|
||
|
|
I##INTERFACE::descriptor).get()); \
|
||
|
|
if (intr == NULL) { \
|
||
|
|
intr = new Bp##INTERFACE(obj); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
return intr; \
|
||
|
|
} \
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
// No user-servicable parts after this...
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
inline sp<IInterface> BnInterface<INTERFACE>::queryLocalInterface(
|
||
|
|
const String16& _descriptor)
|
||
|
|
{
|
||
|
|
if (_descriptor == INTERFACE::descriptor) return this;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
inline String16 BnInterface<INTERFACE>::getInterfaceDescriptor() const
|
||
|
|
{
|
||
|
|
return INTERFACE::getInterfaceDescriptor();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
IBinder* BnInterface<INTERFACE>::onAsBinder()
|
||
|
|
{
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
inline BpInterface<INTERFACE>::BpInterface(const sp<IBinder>& remote)
|
||
|
|
: BpRefBase(remote)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename INTERFACE>
|
||
|
|
inline IBinder* BpInterface<INTERFACE>::onAsBinder()
|
||
|
|
{
|
||
|
|
return remote();
|
||
|
|
}
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------
|
||
|
|
|
||
|
|
}; // namespace android
|
||
|
|
|
||
|
|
#endif // ANDROID_IINTERFACE_H
|