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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/ISurface.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 };
     44 
     45 class BpSurfaceComposerClient : public BpInterface<ISurfaceComposerClient>
     46 {
     47 public:
     48     BpSurfaceComposerClient(const sp<IBinder>& impl)
     49         : BpInterface<ISurfaceComposerClient>(impl)
     50     {
     51     }
     52 
     53     virtual sp<ISurface> createSurface( surface_data_t* params,
     54                                         const String8& name,
     55                                         DisplayID display,
     56                                         uint32_t w,
     57                                         uint32_t h,
     58                                         PixelFormat format,
     59                                         uint32_t flags)
     60     {
     61         Parcel data, reply;
     62         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     63         data.writeString8(name);
     64         data.writeInt32(display);
     65         data.writeInt32(w);
     66         data.writeInt32(h);
     67         data.writeInt32(format);
     68         data.writeInt32(flags);
     69         remote()->transact(CREATE_SURFACE, data, &reply);
     70         params->readFromParcel(reply);
     71         return interface_cast<ISurface>(reply.readStrongBinder());
     72     }
     73 
     74     virtual status_t destroySurface(SurfaceID sid)
     75     {
     76         Parcel data, reply;
     77         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     78         data.writeInt32(sid);
     79         remote()->transact(DESTROY_SURFACE, data, &reply);
     80         return reply.readInt32();
     81     }
     82 };
     83 
     84 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
     85 
     86 // ----------------------------------------------------------------------
     87 
     88 status_t BnSurfaceComposerClient::onTransact(
     89     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     90 {
     91      switch(code) {
     92         case CREATE_SURFACE: {
     93             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
     94             surface_data_t params;
     95             String8 name = data.readString8();
     96             DisplayID display = data.readInt32();
     97             uint32_t w = data.readInt32();
     98             uint32_t h = data.readInt32();
     99             PixelFormat format = data.readInt32();
    100             uint32_t flags = data.readInt32();
    101             sp<ISurface> s = createSurface(&params, name, display, w, h,
    102                     format, flags);
    103             params.writeToParcel(reply);
    104             reply->writeStrongBinder(s->asBinder());
    105             return NO_ERROR;
    106         } break;
    107         case DESTROY_SURFACE: {
    108             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    109             reply->writeInt32( destroySurface( data.readInt32() ) );
    110             return NO_ERROR;
    111         } break;
    112         default:
    113             return BBinder::onTransact(code, data, reply, flags);
    114     }
    115 }
    116 
    117 // ----------------------------------------------------------------------
    118 
    119 status_t ISurfaceComposerClient::surface_data_t::readFromParcel(const Parcel& parcel)
    120 {
    121     token    = parcel.readInt32();
    122     identity = parcel.readInt32();
    123     return NO_ERROR;
    124 }
    125 
    126 status_t ISurfaceComposerClient::surface_data_t::writeToParcel(Parcel* parcel) const
    127 {
    128     parcel->writeInt32(token);
    129     parcel->writeInt32(identity);
    130     return NO_ERROR;
    131 }
    132 
    133 }; // namespace android
    134