libs/ui/ISurfaceComposer.cpp - platform/frameworks/base - Git at Google

 /*
  * 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);
     }
 }

 };
	/*
	* 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);
	}
	}

	};