libs/gui/ISurfaceComposerClient.cpp

   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( const String8& name,
  54                                         uint32_t w,
  55                                         uint32_t h,
  56                                         PixelFormat format,
  57                                         uint32_t flags)
  58     {
  59         Parcel data, reply;
  60         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
  61         data.writeString8(name);
  62         data.writeInt32(w);
  63         data.writeInt32(h);
  64         data.writeInt32(format);
  65         data.writeInt32(flags);
  66         remote()->transact(CREATE_SURFACE, data, &reply);
  67         return interface_cast<ISurface>(reply.readStrongBinder());
  68     }
  69
  70     virtual status_t destroySurface(const sp<IBinder>& handle)
  71     {
  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
  80 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
  81
  82 // ----------------------------------------------------------------------
  83
  84 status_t BnSurfaceComposerClient::onTransact(
  85     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
  86 {
  87      switch(code) {
  88         case CREATE_SURFACE: {
  89             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
  90             String8 name = data.readString8();
  91             uint32_t w = data.readInt32();
  92             uint32_t h = data.readInt32();
  93             PixelFormat format = data.readInt32();
  94             uint32_t flags = data.readInt32();
  95             sp<ISurface> s = createSurface(name, w, h, format, flags);
  96             reply->writeStrongBinder(s->asBinder());
  97             return NO_ERROR;
  98         } break;
  99         case DESTROY_SURFACE: {
 100             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
 101             reply->writeInt32( destroySurface( data.readStrongBinder() ) );
 102             return NO_ERROR;
 103         } break;
 104         default:
 105             return BBinder::onTransact(code, data, reply, flags);
 106     }
 107 }
 108
 109 }; // namespace android