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/*
* Copyright (C) 2007 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.
*/
#include <stdio.h>
#include <stdint.h>
#include <sys/types.h>
#include <utils/Parcel.h>
#include <utils/IMemory.h>
#include <ui/ISurface.h>
namespace android {
enum {
REGISTER_BUFFERS = IBinder::FIRST_CALL_TRANSACTION,
UNREGISTER_BUFFERS,
POST_BUFFER, // one-way transaction
};
class BpSurface : public BpInterface<ISurface>
{
public:
BpSurface(const sp<IBinder>& impl)
: BpInterface<ISurface>(impl)
{
}
virtual status_t registerBuffers(int w, int h, int hstride, int vstride,
PixelFormat format, const sp<IMemoryHeap>& heap)
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
data.writeInt32(w);
data.writeInt32(h);
data.writeInt32(hstride);
data.writeInt32(vstride);
data.writeInt32(format);
data.writeStrongBinder(heap->asBinder());
remote()->transact(REGISTER_BUFFERS, data, &reply);
status_t result = reply.readInt32();
return result;
}
virtual void postBuffer(ssize_t offset)
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
data.writeInt32(offset);
remote()->transact(POST_BUFFER, data, &reply, IBinder::FLAG_ONEWAY);
}
virtual void unregisterBuffers()
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
remote()->transact(UNREGISTER_BUFFERS, data, &reply);
}
};
IMPLEMENT_META_INTERFACE(Surface, "android.ui.ISurface");
// ----------------------------------------------------------------------
#define CHECK_INTERFACE(interface, data, reply) \
do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
LOGW("Call incorrectly routed to " #interface); \
return PERMISSION_DENIED; \
} } while (0)
status_t BnSurface::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case REGISTER_BUFFERS: {
CHECK_INTERFACE(ISurface, data, reply);
int w = data.readInt32();
int h = data.readInt32();
int hs= data.readInt32();
int vs= data.readInt32();
PixelFormat f = data.readInt32();
sp<IMemoryHeap> heap(interface_cast<IMemoryHeap>(data.readStrongBinder()));
status_t err = registerBuffers(w,h,hs,vs,f,heap);
reply->writeInt32(err);
return NO_ERROR;
} break;
case UNREGISTER_BUFFERS: {
CHECK_INTERFACE(ISurface, data, reply);
unregisterBuffers();
return NO_ERROR;
} break;
case POST_BUFFER: {
CHECK_INTERFACE(ISurface, data, reply);
ssize_t offset = data.readInt32();
postBuffer(offset);
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
}; // namespace android
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