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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 status_t createSurface(const String8& name, uint32_t w,
     55             uint32_t h, PixelFormat format, uint32_t flags,
     56             sp<IBinder>* handle,
     57             sp<IGraphicBufferProducer>* gbp) {
     58         Parcel data, reply;
     59         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     60         data.writeString8(name);
     61         data.writeInt32(w);
     62         data.writeInt32(h);
     63         data.writeInt32(format);
     64         data.writeInt32(flags);
     65         remote()->transact(CREATE_SURFACE, data, &reply);
     66         *handle = reply.readStrongBinder();
     67         *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
     68         return reply.readInt32();
     69     }
     70 
     71     virtual status_t destroySurface(const sp<IBinder>& handle) {
     72         Parcel data, reply;
     73         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     74         data.writeStrongBinder(handle);
     75         remote()->transact(DESTROY_SURFACE, data, &reply);
     76         return reply.readInt32();
     77     }
     78 
     79     virtual status_t clearLayerFrameStats(const sp<IBinder>& handle) const {
     80         Parcel data, reply;
     81         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     82         data.writeStrongBinder(handle);
     83         remote()->transact(CLEAR_LAYER_FRAME_STATS, data, &reply);
     84         return reply.readInt32();
     85     }
     86 
     87     virtual status_t getLayerFrameStats(const sp<IBinder>& handle, FrameStats* outStats) const {
     88         Parcel data, reply;
     89         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     90         data.writeStrongBinder(handle);
     91         remote()->transact(GET_LAYER_FRAME_STATS, data, &reply);
     92         reply.read(*outStats);
     93         return reply.readInt32();
     94     }
     95 };
     96 
     97 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
     98 
     99 // ----------------------------------------------------------------------
    100 
    101 status_t BnSurfaceComposerClient::onTransact(
    102     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
    103 {
    104      switch(code) {
    105         case CREATE_SURFACE: {
    106             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    107             String8 name = data.readString8();
    108             uint32_t w = data.readInt32();
    109             uint32_t h = data.readInt32();
    110             PixelFormat format = data.readInt32();
    111             uint32_t flags = data.readInt32();
    112             sp<IBinder> handle;
    113             sp<IGraphicBufferProducer> gbp;
    114             status_t result = createSurface(name, w, h, format, flags,
    115                     &handle, &gbp);
    116             reply->writeStrongBinder(handle);
    117             reply->writeStrongBinder(gbp->asBinder());
    118             reply->writeInt32(result);
    119             return NO_ERROR;
    120         } break;
    121         case DESTROY_SURFACE: {
    122             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    123             reply->writeInt32(destroySurface( data.readStrongBinder() ) );
    124             return NO_ERROR;
    125         } break;
    126        case CLEAR_LAYER_FRAME_STATS: {
    127             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    128             sp<IBinder> handle = data.readStrongBinder();
    129             status_t result = clearLayerFrameStats(handle);
    130             reply->writeInt32(result);
    131             return NO_ERROR;
    132         } break;
    133         case GET_LAYER_FRAME_STATS: {
    134             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    135             sp<IBinder> handle = data.readStrongBinder();
    136             FrameStats stats;
    137             status_t result = getLayerFrameStats(handle, &stats);
    138             reply->write(stats);
    139             reply->writeInt32(result);
    140             return NO_ERROR;
    141         } break;
    142         default:
    143             return BBinder::onTransact(code, data, reply, flags);
    144     }
    145 }
    146 
    147 }; // namespace android
    148