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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 // tag as surfaceflinger
     18 #define LOG_TAG "SurfaceFlinger"
     19 
     20 #include <stdio.h>
     21 #include <stdint.h>
     22 #include <sys/types.h>
     23 
     24 #include <binder/Parcel.h>
     25 #include <binder/IMemory.h>
     26 #include <binder/IPCThreadState.h>
     27 #include <binder/IServiceManager.h>
     28 
     29 #include <ui/Point.h>
     30 #include <ui/Rect.h>
     31 
     32 #include <gui/IGraphicBufferProducer.h>
     33 #include <gui/ISurfaceComposerClient.h>
     34 #include <private/gui/LayerState.h>
     35 
     36 // ---------------------------------------------------------------------------
     37 
     38 namespace android {
     39 
     40 enum {
     41     CREATE_SURFACE = IBinder::FIRST_CALL_TRANSACTION,
     42     DESTROY_SURFACE,
     43     CLEAR_LAYER_FRAME_STATS,
     44     GET_LAYER_FRAME_STATS
     45 };
     46 
     47 class BpSurfaceComposerClient : public BpInterface<ISurfaceComposerClient>
     48 {
     49 public:
     50     BpSurfaceComposerClient(const sp<IBinder>& impl)
     51         : BpInterface<ISurfaceComposerClient>(impl) {
     52     }
     53 
     54     virtual ~BpSurfaceComposerClient();
     55 
     56     virtual status_t createSurface(const String8& name, uint32_t width,
     57             uint32_t height, PixelFormat format, uint32_t flags,
     58             sp<IBinder>* handle,
     59             sp<IGraphicBufferProducer>* gbp) {
     60         Parcel data, reply;
     61         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     62         data.writeString8(name);
     63         data.writeUint32(width);
     64         data.writeUint32(height);
     65         data.writeInt32(static_cast<int32_t>(format));
     66         data.writeUint32(flags);
     67         remote()->transact(CREATE_SURFACE, data, &reply);
     68         *handle = reply.readStrongBinder();
     69         *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
     70         return reply.readInt32();
     71     }
     72 
     73     virtual status_t destroySurface(const sp<IBinder>& handle) {
     74         Parcel data, reply;
     75         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     76         data.writeStrongBinder(handle);
     77         remote()->transact(DESTROY_SURFACE, data, &reply);
     78         return reply.readInt32();
     79     }
     80 
     81     virtual status_t clearLayerFrameStats(const sp<IBinder>& handle) const {
     82         Parcel data, reply;
     83         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     84         data.writeStrongBinder(handle);
     85         remote()->transact(CLEAR_LAYER_FRAME_STATS, data, &reply);
     86         return reply.readInt32();
     87     }
     88 
     89     virtual status_t getLayerFrameStats(const sp<IBinder>& handle, FrameStats* outStats) const {
     90         Parcel data, reply;
     91         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     92         data.writeStrongBinder(handle);
     93         remote()->transact(GET_LAYER_FRAME_STATS, data, &reply);
     94         reply.read(*outStats);
     95         return reply.readInt32();
     96     }
     97 };
     98 
     99 // Out-of-line virtual method definition to trigger vtable emission in this
    100 // translation unit (see clang warning -Wweak-vtables)
    101 BpSurfaceComposerClient::~BpSurfaceComposerClient() {}
    102 
    103 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
    104 
    105 // ----------------------------------------------------------------------
    106 
    107 status_t BnSurfaceComposerClient::onTransact(
    108     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
    109 {
    110      switch(code) {
    111         case CREATE_SURFACE: {
    112             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    113             String8 name = data.readString8();
    114             uint32_t width = data.readUint32();
    115             uint32_t height = data.readUint32();
    116             PixelFormat format = static_cast<PixelFormat>(data.readInt32());
    117             uint32_t createFlags = data.readUint32();
    118             sp<IBinder> handle;
    119             sp<IGraphicBufferProducer> gbp;
    120             status_t result = createSurface(name, width, height, format,
    121                     createFlags, &handle, &gbp);
    122             reply->writeStrongBinder(handle);
    123             reply->writeStrongBinder(IInterface::asBinder(gbp));
    124             reply->writeInt32(result);
    125             return NO_ERROR;
    126         }
    127         case DESTROY_SURFACE: {
    128             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    129             reply->writeInt32(destroySurface( data.readStrongBinder() ) );
    130             return NO_ERROR;
    131         }
    132        case CLEAR_LAYER_FRAME_STATS: {
    133             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    134             sp<IBinder> handle = data.readStrongBinder();
    135             status_t result = clearLayerFrameStats(handle);
    136             reply->writeInt32(result);
    137             return NO_ERROR;
    138         }
    139         case GET_LAYER_FRAME_STATS: {
    140             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    141             sp<IBinder> handle = data.readStrongBinder();
    142             FrameStats stats;
    143             status_t result = getLayerFrameStats(handle, &stats);
    144             reply->write(stats);
    145             reply->writeInt32(result);
    146             return NO_ERROR;
    147         }
    148         default:
    149             return BBinder::onTransact(code, data, reply, flags);
    150     }
    151 }
    152 
    153 }; // namespace android
    154