/*
* 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.
*/
// tag as surfaceflinger
#define LOG_TAG "SurfaceFlinger"
#include <stdint.h>
#include <sys/types.h>
#include <utils/Parcel.h>
#include <utils/IMemory.h>
#include <utils/IPCThreadState.h>
#include <utils/IServiceManager.h>
#include <ui/ISurfaceComposer.h>
#include <ui/DisplayInfo.h>
// ---------------------------------------------------------------------------
#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
// ---------------------------------------------------------------------------
namespace android {
class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
{
public:
BpSurfaceComposer(const sp<IBinder>& impl)
: BpInterface<ISurfaceComposer>(impl)
{
}
virtual sp<ISurfaceFlingerClient> createConnection()
{
uint32_t n;
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply);
return interface_cast<ISurfaceFlingerClient>(reply.readStrongBinder());
}
virtual sp<IMemory> getCblk() const
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::GET_CBLK, data, &reply);
return interface_cast<IMemory>(reply.readStrongBinder());
}
virtual void openGlobalTransaction()
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::OPEN_GLOBAL_TRANSACTION, data, &reply);
}
virtual void closeGlobalTransaction()
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::CLOSE_GLOBAL_TRANSACTION, data, &reply);
}
virtual status_t freezeDisplay(DisplayID dpy, uint32_t flags)
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeInt32(dpy);
data.writeInt32(flags);
remote()->transact(BnSurfaceComposer::FREEZE_DISPLAY, data, &reply);
return reply.readInt32();
}
virtual status_t unfreezeDisplay(DisplayID dpy, uint32_t flags)
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeInt32(dpy);
data.writeInt32(flags);
remote()->transact(BnSurfaceComposer::UNFREEZE_DISPLAY, data, &reply);
return reply.readInt32();
}
virtual int setOrientation(DisplayID dpy, int orientation, uint32_t flags)
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeInt32(dpy);
data.writeInt32(orientation);
data.writeInt32(flags);
remote()->transact(BnSurfaceComposer::SET_ORIENTATION, data, &reply);
return reply.readInt32();
}
virtual void bootFinished()
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
}
virtual status_t requestGPU(
const sp<IGPUCallback>& callback, gpu_info_t* gpu)
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(callback->asBinder());
remote()->transact(BnSurfaceComposer::REQUEST_GPU, data, &reply);
gpu->regs = interface_cast<IMemory>(reply.readStrongBinder());
gpu->count = reply.readInt32();
// FIXME: for now, we don't dynamically allocate the regions array
size_t maxCount = sizeof(gpu->regions)/sizeof(*gpu->regions);
if (gpu->count > maxCount)
return BAD_VALUE;
for (size_t i=0 ; i<gpu->count ; i++) {
gpu->regions[i].region = interface_cast<IMemory>(reply.readStrongBinder());
gpu->regions[i].reserved = reply.readInt32();
}
return reply.readInt32();
}
virtual status_t revokeGPU()
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::REVOKE_GPU, data, &reply);
return reply.readInt32();
}
virtual void signal() const
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::SIGNAL, data, &reply, IBinder::FLAG_ONEWAY);
}
};
IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
// ----------------------------------------------------------------------
#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 BnSurfaceComposer::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
status_t err = BnInterface<ISurfaceComposer>::onTransact(code, data, reply, flags);
if (err == NO_ERROR)
return err;
CHECK_INTERFACE(ISurfaceComposer, data, reply);
switch(code) {
case CREATE_CONNECTION: {
sp<IBinder> b = createConnection()->asBinder();
reply->writeStrongBinder(b);
} break;
case OPEN_GLOBAL_TRANSACTION: {
openGlobalTransaction();
} break;
case CLOSE_GLOBAL_TRANSACTION: {
closeGlobalTransaction();
} break;
case SET_ORIENTATION: {
DisplayID dpy = data.readInt32();
int orientation = data.readInt32();
uint32_t flags = data.readInt32();
reply->writeInt32( setOrientation(dpy, orientation, flags) );
} break;
case FREEZE_DISPLAY: {
DisplayID dpy = data.readInt32();
uint32_t flags = data.readInt32();
reply->writeInt32( freezeDisplay(dpy, flags) );
} break;
case UNFREEZE_DISPLAY: {
DisplayID dpy = data.readInt32();
uint32_t flags = data.readInt32();
reply->writeInt32( unfreezeDisplay(dpy, flags) );
} break;
case BOOT_FINISHED: {
bootFinished();
} break;
case REVOKE_GPU: {
reply->writeInt32( revokeGPU() );
} break;
case SIGNAL: {
signal();
} break;
case GET_CBLK: {
sp<IBinder> b = getCblk()->asBinder();
reply->writeStrongBinder(b);
} break;
case REQUEST_GPU: {
// TODO: this should be protected by a permission
gpu_info_t info;
sp<IGPUCallback> callback
= interface_cast<IGPUCallback>(data.readStrongBinder());
status_t res = requestGPU(callback, &info);
// FIXME: for now, we don't dynamically allocate the regions array
size_t maxCount = sizeof(info.regions)/sizeof(*info.regions);
if (info.count > maxCount)
return BAD_VALUE;
reply->writeStrongBinder(info.regs->asBinder());
reply->writeInt32(info.count);
for (size_t i=0 ; i<info.count ; i++) {
reply->writeStrongBinder(info.regions[i].region->asBinder());
reply->writeInt32(info.regions[i].reserved);
}
reply->writeInt32(res);
} break;
default:
return UNKNOWN_TRANSACTION;
}
return NO_ERROR;
}
// ----------------------------------------------------------------------------
enum {
// Note: BOOT_FINISHED must remain this value, it is called by ActivityManagerService.
GPU_LOST = IBinder::FIRST_CALL_TRANSACTION
};
class BpGPUCallback : public BpInterface<IGPUCallback>
{
public:
BpGPUCallback(const sp<IBinder>& impl)
: BpInterface<IGPUCallback>(impl)
{
}
virtual void gpuLost()
{
Parcel data, reply;
data.writeInterfaceToken(IGPUCallback::getInterfaceDescriptor());
remote()->transact(GPU_LOST, data, &reply, IBinder::FLAG_ONEWAY);
}
};
IMPLEMENT_META_INTERFACE(GPUCallback, "android.ui.IGPUCallback");
status_t BnGPUCallback::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case GPU_LOST: {
CHECK_INTERFACE(IGPUCallback, data, reply);
gpuLost();
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
};