| /* |
| * 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 <binder/Parcel.h> |
| #include <binder/IMemory.h> |
| #include <binder/IPCThreadState.h> |
| #include <binder/IServiceManager.h> |
| |
| #include <gui/BitTube.h> |
| #include <gui/IDisplayEventConnection.h> |
| #include <gui/ISurfaceComposer.h> |
| #include <gui/IGraphicBufferProducer.h> |
| |
| #include <private/gui/LayerState.h> |
| |
| #include <ui/DisplayInfo.h> |
| |
| #include <utils/Log.h> |
| |
| // --------------------------------------------------------------------------- |
| |
| namespace android { |
| |
| class IDisplayEventConnection; |
| |
| class BpSurfaceComposer : public BpInterface<ISurfaceComposer> |
| { |
| public: |
| BpSurfaceComposer(const sp<IBinder>& impl) |
| : BpInterface<ISurfaceComposer>(impl) |
| { |
| } |
| |
| virtual sp<ISurfaceComposerClient> createConnection() |
| { |
| uint32_t n; |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply); |
| return interface_cast<ISurfaceComposerClient>(reply.readStrongBinder()); |
| } |
| |
| virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc() |
| { |
| uint32_t n; |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| remote()->transact(BnSurfaceComposer::CREATE_GRAPHIC_BUFFER_ALLOC, data, &reply); |
| return interface_cast<IGraphicBufferAlloc>(reply.readStrongBinder()); |
| } |
| |
| virtual void setTransactionState( |
| const Vector<ComposerState>& state, |
| const Vector<DisplayState>& displays, |
| uint32_t flags) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| { |
| Vector<ComposerState>::const_iterator b(state.begin()); |
| Vector<ComposerState>::const_iterator e(state.end()); |
| data.writeInt32(state.size()); |
| for ( ; b != e ; ++b ) { |
| b->write(data); |
| } |
| } |
| { |
| Vector<DisplayState>::const_iterator b(displays.begin()); |
| Vector<DisplayState>::const_iterator e(displays.end()); |
| data.writeInt32(displays.size()); |
| for ( ; b != e ; ++b ) { |
| b->write(data); |
| } |
| } |
| data.writeInt32(flags); |
| remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply); |
| } |
| |
| virtual void bootFinished() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply); |
| } |
| |
| virtual status_t captureScreen(const sp<IBinder>& display, |
| const sp<IGraphicBufferProducer>& producer, |
| uint32_t reqWidth, uint32_t reqHeight, |
| uint32_t minLayerZ, uint32_t maxLayerZ) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeStrongBinder(display); |
| data.writeStrongBinder(producer->asBinder()); |
| data.writeInt32(reqWidth); |
| data.writeInt32(reqHeight); |
| data.writeInt32(minLayerZ); |
| data.writeInt32(maxLayerZ); |
| remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| virtual bool authenticateSurfaceTexture( |
| const sp<IGraphicBufferProducer>& bufferProducer) const |
| { |
| Parcel data, reply; |
| int err = NO_ERROR; |
| err = data.writeInterfaceToken( |
| ISurfaceComposer::getInterfaceDescriptor()); |
| if (err != NO_ERROR) { |
| ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing " |
| "interface descriptor: %s (%d)", strerror(-err), -err); |
| return false; |
| } |
| err = data.writeStrongBinder(bufferProducer->asBinder()); |
| if (err != NO_ERROR) { |
| ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing " |
| "strong binder to parcel: %s (%d)", strerror(-err), -err); |
| return false; |
| } |
| err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data, |
| &reply); |
| if (err != NO_ERROR) { |
| ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error " |
| "performing transaction: %s (%d)", strerror(-err), -err); |
| return false; |
| } |
| int32_t result = 0; |
| err = reply.readInt32(&result); |
| if (err != NO_ERROR) { |
| ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error " |
| "retrieving result: %s (%d)", strerror(-err), -err); |
| return false; |
| } |
| return result != 0; |
| } |
| |
| virtual sp<IDisplayEventConnection> createDisplayEventConnection() |
| { |
| Parcel data, reply; |
| sp<IDisplayEventConnection> result; |
| int err = data.writeInterfaceToken( |
| ISurfaceComposer::getInterfaceDescriptor()); |
| if (err != NO_ERROR) { |
| return result; |
| } |
| err = remote()->transact( |
| BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION, |
| data, &reply); |
| if (err != NO_ERROR) { |
| ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing " |
| "transaction: %s (%d)", strerror(-err), -err); |
| return result; |
| } |
| result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder()); |
| return result; |
| } |
| |
| virtual sp<IBinder> createDisplay(const String8& displayName, bool secure) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeString8(displayName); |
| data.writeInt32(secure ? 1 : 0); |
| remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply); |
| return reply.readStrongBinder(); |
| } |
| |
| virtual void destroyDisplay(const sp<IBinder>& display) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeStrongBinder(display); |
| remote()->transact(BnSurfaceComposer::DESTROY_DISPLAY, data, &reply); |
| } |
| |
| virtual sp<IBinder> getBuiltInDisplay(int32_t id) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeInt32(id); |
| remote()->transact(BnSurfaceComposer::GET_BUILT_IN_DISPLAY, data, &reply); |
| return reply.readStrongBinder(); |
| } |
| |
| virtual void blank(const sp<IBinder>& display) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeStrongBinder(display); |
| remote()->transact(BnSurfaceComposer::BLANK, data, &reply); |
| } |
| |
| virtual void unblank(const sp<IBinder>& display) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeStrongBinder(display); |
| remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply); |
| } |
| |
| virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); |
| data.writeStrongBinder(display); |
| remote()->transact(BnSurfaceComposer::GET_DISPLAY_INFO, data, &reply); |
| memcpy(info, reply.readInplace(sizeof(DisplayInfo)), sizeof(DisplayInfo)); |
| return reply.readInt32(); |
| } |
| }; |
| |
| IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer"); |
| |
| // ---------------------------------------------------------------------- |
| |
| status_t BnSurfaceComposer::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| { |
| switch(code) { |
| case CREATE_CONNECTION: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IBinder> b = createConnection()->asBinder(); |
| reply->writeStrongBinder(b); |
| return NO_ERROR; |
| } |
| case CREATE_GRAPHIC_BUFFER_ALLOC: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IBinder> b = createGraphicBufferAlloc()->asBinder(); |
| reply->writeStrongBinder(b); |
| return NO_ERROR; |
| } |
| case SET_TRANSACTION_STATE: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| size_t count = data.readInt32(); |
| ComposerState s; |
| Vector<ComposerState> state; |
| state.setCapacity(count); |
| for (size_t i=0 ; i<count ; i++) { |
| s.read(data); |
| state.add(s); |
| } |
| count = data.readInt32(); |
| DisplayState d; |
| Vector<DisplayState> displays; |
| displays.setCapacity(count); |
| for (size_t i=0 ; i<count ; i++) { |
| d.read(data); |
| displays.add(d); |
| } |
| uint32_t flags = data.readInt32(); |
| setTransactionState(state, displays, flags); |
| return NO_ERROR; |
| } |
| case BOOT_FINISHED: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| bootFinished(); |
| return NO_ERROR; |
| } |
| case CAPTURE_SCREEN: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IBinder> display = data.readStrongBinder(); |
| sp<IGraphicBufferProducer> producer = |
| interface_cast<IGraphicBufferProducer>(data.readStrongBinder()); |
| uint32_t reqWidth = data.readInt32(); |
| uint32_t reqHeight = data.readInt32(); |
| uint32_t minLayerZ = data.readInt32(); |
| uint32_t maxLayerZ = data.readInt32(); |
| status_t res = captureScreen(display, producer, |
| reqWidth, reqHeight, minLayerZ, maxLayerZ); |
| reply->writeInt32(res); |
| return NO_ERROR; |
| } |
| case AUTHENTICATE_SURFACE: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IGraphicBufferProducer> bufferProducer = |
| interface_cast<IGraphicBufferProducer>(data.readStrongBinder()); |
| int32_t result = authenticateSurfaceTexture(bufferProducer) ? 1 : 0; |
| reply->writeInt32(result); |
| return NO_ERROR; |
| } |
| case CREATE_DISPLAY_EVENT_CONNECTION: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IDisplayEventConnection> connection(createDisplayEventConnection()); |
| reply->writeStrongBinder(connection->asBinder()); |
| return NO_ERROR; |
| } |
| case CREATE_DISPLAY: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| String8 displayName = data.readString8(); |
| bool secure = bool(data.readInt32()); |
| sp<IBinder> display(createDisplay(displayName, secure)); |
| reply->writeStrongBinder(display); |
| return NO_ERROR; |
| } |
| case DESTROY_DISPLAY: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IBinder> display = data.readStrongBinder(); |
| destroyDisplay(display); |
| return NO_ERROR; |
| } |
| case GET_BUILT_IN_DISPLAY: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| int32_t id = data.readInt32(); |
| sp<IBinder> display(getBuiltInDisplay(id)); |
| reply->writeStrongBinder(display); |
| return NO_ERROR; |
| } |
| case BLANK: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IBinder> display = data.readStrongBinder(); |
| blank(display); |
| return NO_ERROR; |
| } |
| case UNBLANK: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| sp<IBinder> display = data.readStrongBinder(); |
| unblank(display); |
| return NO_ERROR; |
| } |
| case GET_DISPLAY_INFO: { |
| CHECK_INTERFACE(ISurfaceComposer, data, reply); |
| DisplayInfo info; |
| sp<IBinder> display = data.readStrongBinder(); |
| status_t result = getDisplayInfo(display, &info); |
| memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo)); |
| reply->writeInt32(result); |
| return NO_ERROR; |
| } |
| default: { |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| // should be unreachable |
| return NO_ERROR; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| }; |