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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 };
     44 
     45 class BpSurfaceComposerClient : public BpInterface<ISurfaceComposerClient>
     46 {
     47 public:
     48     BpSurfaceComposerClient(const sp<IBinder>& impl)
     49         : BpInterface<ISurfaceComposerClient>(impl) {
     50     }
     51 
     52     virtual status_t createSurface(const String8& name, uint32_t w,
     53             uint32_t h, PixelFormat format, uint32_t flags,
     54             sp<IBinder>* handle,
     55             sp<IGraphicBufferProducer>* gbp) {
     56         Parcel data, reply;
     57         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     58         data.writeString8(name);
     59         data.writeInt32(w);
     60         data.writeInt32(h);
     61         data.writeInt32(format);
     62         data.writeInt32(flags);
     63         remote()->transact(CREATE_SURFACE, data, &reply);
     64         *handle = reply.readStrongBinder();
     65         *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
     66         return reply.readInt32();
     67     }
     68 
     69     virtual status_t destroySurface(const sp<IBinder>& handle) {
     70         Parcel data, reply;
     71         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
     72         data.writeStrongBinder(handle);
     73         remote()->transact(DESTROY_SURFACE, data, &reply);
     74         return reply.readInt32();
     75     }
     76 };
     77 
     78 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
     79 
     80 // ----------------------------------------------------------------------
     81 
     82 status_t BnSurfaceComposerClient::onTransact(
     83     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     84 {
     85      switch(code) {
     86         case CREATE_SURFACE: {
     87             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
     88             String8 name = data.readString8();
     89             uint32_t w = data.readInt32();
     90             uint32_t h = data.readInt32();
     91             PixelFormat format = data.readInt32();
     92             uint32_t flags = data.readInt32();
     93             sp<IBinder> handle;
     94             sp<IGraphicBufferProducer> gbp;
     95             status_t result = createSurface(name, w, h, format, flags,
     96                     &handle, &gbp);
     97             reply->writeStrongBinder(handle);
     98             reply->writeStrongBinder(gbp->asBinder());
     99             reply->writeInt32(result);
    100             return NO_ERROR;
    101         } break;
    102         case DESTROY_SURFACE: {
    103             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
    104             reply->writeInt32( destroySurface( data.readStrongBinder() ) );
    105             return NO_ERROR;
    106         } break;
    107         default:
    108             return BBinder::onTransact(code, data, reply, flags);
    109     }
    110 }
    111 
    112 }; // namespace android
    113